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) | |
69 | #define PL_pending_ident (PL_parser->pending_ident) | |
70 | #define PL_preambled (PL_parser->preambled) | |
71 | #define PL_sublex_info (PL_parser->sublex_info) | |
bdc0bf6f | 72 | #define PL_linestr (PL_parser->linestr) |
c2598295 DM |
73 | #define PL_expect (PL_parser->expect) |
74 | #define PL_copline (PL_parser->copline) | |
f06b5848 DM |
75 | #define PL_bufptr (PL_parser->bufptr) |
76 | #define PL_oldbufptr (PL_parser->oldbufptr) | |
77 | #define PL_oldoldbufptr (PL_parser->oldoldbufptr) | |
78 | #define PL_linestart (PL_parser->linestart) | |
79 | #define PL_bufend (PL_parser->bufend) | |
80 | #define PL_last_uni (PL_parser->last_uni) | |
81 | #define PL_last_lop (PL_parser->last_lop) | |
82 | #define PL_last_lop_op (PL_parser->last_lop_op) | |
bc177e6b | 83 | #define PL_lex_state (PL_parser->lex_state) |
2f9285f8 | 84 | #define PL_rsfp (PL_parser->rsfp) |
5486870f | 85 | #define PL_rsfp_filters (PL_parser->rsfp_filters) |
12bd6ede DM |
86 | #define PL_in_my (PL_parser->in_my) |
87 | #define PL_in_my_stash (PL_parser->in_my_stash) | |
14047fc9 | 88 | #define PL_tokenbuf (PL_parser->tokenbuf) |
670a9cb2 | 89 | #define PL_multi_end (PL_parser->multi_end) |
13765c85 | 90 | #define PL_error_count (PL_parser->error_count) |
199e78b7 DM |
91 | |
92 | #ifdef PERL_MAD | |
93 | # define PL_endwhite (PL_parser->endwhite) | |
94 | # define PL_faketokens (PL_parser->faketokens) | |
95 | # define PL_lasttoke (PL_parser->lasttoke) | |
96 | # define PL_nextwhite (PL_parser->nextwhite) | |
97 | # define PL_realtokenstart (PL_parser->realtokenstart) | |
98 | # define PL_skipwhite (PL_parser->skipwhite) | |
99 | # define PL_thisclose (PL_parser->thisclose) | |
100 | # define PL_thismad (PL_parser->thismad) | |
101 | # define PL_thisopen (PL_parser->thisopen) | |
102 | # define PL_thisstuff (PL_parser->thisstuff) | |
103 | # define PL_thistoken (PL_parser->thistoken) | |
104 | # define PL_thiswhite (PL_parser->thiswhite) | |
fb205e7a DM |
105 | # define PL_thiswhite (PL_parser->thiswhite) |
106 | # define PL_nexttoke (PL_parser->nexttoke) | |
107 | # define PL_curforce (PL_parser->curforce) | |
108 | #else | |
109 | # define PL_nexttoke (PL_parser->nexttoke) | |
110 | # define PL_nexttype (PL_parser->nexttype) | |
111 | # define PL_nextval (PL_parser->nextval) | |
199e78b7 DM |
112 | #endif |
113 | ||
16173588 NC |
114 | /* This can't be done with embed.fnc, because struct yy_parser contains a |
115 | member named pending_ident, which clashes with the generated #define */ | |
3cbf51f5 DM |
116 | static int |
117 | S_pending_ident(pTHX); | |
199e78b7 | 118 | |
0bd48802 | 119 | static const char ident_too_long[] = "Identifier too long"; |
8903cb82 | 120 | |
29595ff2 | 121 | #ifdef PERL_MAD |
29595ff2 | 122 | # define CURMAD(slot,sv) if (PL_madskills) { curmad(slot,sv); sv = 0; } |
cd81e915 | 123 | # define NEXTVAL_NEXTTOKE PL_nexttoke[PL_curforce].next_val |
9ded7720 | 124 | #else |
5db06880 | 125 | # define CURMAD(slot,sv) |
9ded7720 | 126 | # define NEXTVAL_NEXTTOKE PL_nextval[PL_nexttoke] |
29595ff2 NC |
127 | #endif |
128 | ||
a7aaec61 Z |
129 | #define XENUMMASK 0x3f |
130 | #define XFAKEEOF 0x40 | |
131 | #define XFAKEBRACK 0x80 | |
9059aa12 | 132 | |
39e02b42 JH |
133 | #ifdef USE_UTF8_SCRIPTS |
134 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 135 | #else |
746b446a | 136 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8)) |
2b9d42f0 | 137 | #endif |
a0ed51b3 | 138 | |
b1fc3636 CJ |
139 | /* The maximum number of characters preceding the unrecognized one to display */ |
140 | #define UNRECOGNIZED_PRECEDE_COUNT 10 | |
141 | ||
61f0cdd9 | 142 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
143 | * 1999-02-27 mjd-perl-patch@plover.com */ |
144 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
145 | ||
bf4acbe4 | 146 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') |
bf4acbe4 | 147 | |
ffb4593c NT |
148 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
149 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
150 | * can get by with a single comparison (if the compiler is smart enough). |
151 | */ | |
152 | ||
fb73857a | 153 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
154 | ||
b6007c36 DM |
155 | #define LEX_NORMAL 10 /* normal code (ie not within "...") */ |
156 | #define LEX_INTERPNORMAL 9 /* code within a string, eg "$foo[$x+1]" */ | |
157 | #define LEX_INTERPCASEMOD 8 /* expecting a \U, \Q or \E etc */ | |
158 | #define LEX_INTERPPUSH 7 /* starting a new sublex parse level */ | |
159 | #define LEX_INTERPSTART 6 /* expecting the start of a $var */ | |
160 | ||
161 | /* at end of code, eg "$x" followed by: */ | |
162 | #define LEX_INTERPEND 5 /* ... eg not one of [, { or -> */ | |
163 | #define LEX_INTERPENDMAYBE 4 /* ... eg one of [, { or -> */ | |
164 | ||
165 | #define LEX_INTERPCONCAT 3 /* expecting anything, eg at start of | |
166 | string or after \E, $foo, etc */ | |
167 | #define LEX_INTERPCONST 2 /* NOT USED */ | |
168 | #define LEX_FORMLINE 1 /* expecting a format line */ | |
169 | #define LEX_KNOWNEXT 0 /* next token known; just return it */ | |
170 | ||
79072805 | 171 | |
bbf60fe6 | 172 | #ifdef DEBUGGING |
27da23d5 | 173 | static const char* const lex_state_names[] = { |
bbf60fe6 DM |
174 | "KNOWNEXT", |
175 | "FORMLINE", | |
176 | "INTERPCONST", | |
177 | "INTERPCONCAT", | |
178 | "INTERPENDMAYBE", | |
179 | "INTERPEND", | |
180 | "INTERPSTART", | |
181 | "INTERPPUSH", | |
182 | "INTERPCASEMOD", | |
183 | "INTERPNORMAL", | |
184 | "NORMAL" | |
185 | }; | |
186 | #endif | |
187 | ||
79072805 LW |
188 | #ifdef ff_next |
189 | #undef ff_next | |
d48672a2 LW |
190 | #endif |
191 | ||
79072805 | 192 | #include "keywords.h" |
fe14fcc3 | 193 | |
ffb4593c NT |
194 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
195 | ||
ae986130 LW |
196 | #ifdef CLINE |
197 | #undef CLINE | |
198 | #endif | |
57843af0 | 199 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 200 | |
5db06880 | 201 | #ifdef PERL_MAD |
29595ff2 NC |
202 | # define SKIPSPACE0(s) skipspace0(s) |
203 | # define SKIPSPACE1(s) skipspace1(s) | |
204 | # define SKIPSPACE2(s,tsv) skipspace2(s,&tsv) | |
205 | # define PEEKSPACE(s) skipspace2(s,0) | |
206 | #else | |
207 | # define SKIPSPACE0(s) skipspace(s) | |
208 | # define SKIPSPACE1(s) skipspace(s) | |
209 | # define SKIPSPACE2(s,tsv) skipspace(s) | |
210 | # define PEEKSPACE(s) skipspace(s) | |
211 | #endif | |
212 | ||
ffb4593c NT |
213 | /* |
214 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 215 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
216 | * |
217 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
218 | * OPERATOR : generic operator | |
219 | * AOPERATOR : assignment operator | |
220 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
221 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
222 | * PREREF : *EXPR where EXPR is not a simple identifier | |
223 | * TERM : expression term | |
224 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
225 | * FTST : file test operator | |
226 | * FUN0 : zero-argument function | |
7eb971ee | 227 | * FUN0OP : zero-argument function, with its op created in this file |
2d2e263d | 228 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
229 | * BOop : bitwise or or xor |
230 | * BAop : bitwise and | |
231 | * SHop : shift operator | |
232 | * PWop : power operator | |
9cbb5ea2 | 233 | * PMop : pattern-matching operator |
ffb4593c NT |
234 | * Aop : addition-level operator |
235 | * Mop : multiplication-level operator | |
236 | * Eop : equality-testing operator | |
e5edeb50 | 237 | * Rop : relational operator <= != gt |
ffb4593c NT |
238 | * |
239 | * Also see LOP and lop() below. | |
240 | */ | |
241 | ||
998054bd | 242 | #ifdef DEBUGGING /* Serve -DT. */ |
704d4215 | 243 | # define REPORT(retval) tokereport((I32)retval, &pl_yylval) |
998054bd | 244 | #else |
bbf60fe6 | 245 | # define REPORT(retval) (retval) |
998054bd SC |
246 | #endif |
247 | ||
bbf60fe6 DM |
248 | #define TOKEN(retval) return ( PL_bufptr = s, REPORT(retval)) |
249 | #define OPERATOR(retval) return (PL_expect = XTERM, PL_bufptr = s, REPORT(retval)) | |
250 | #define AOPERATOR(retval) return ao((PL_expect = XTERM, PL_bufptr = s, REPORT(retval))) | |
251 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s, REPORT(retval)) | |
252 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s, REPORT(retval)) | |
253 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s, REPORT(retval)) | |
254 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR, PL_bufptr = s, REPORT(retval)) | |
6154021b RGS |
255 | #define LOOPX(f) return (pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)LOOPEX)) |
256 | #define FTST(f) return (pl_yylval.ival=f, PL_expect=XTERMORDORDOR, PL_bufptr=s, REPORT((int)UNIOP)) | |
257 | #define FUN0(f) return (pl_yylval.ival=f, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC0)) | |
7eb971ee | 258 | #define FUN0OP(f) return (pl_yylval.opval=f, CLINE, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC0OP)) |
6154021b RGS |
259 | #define FUN1(f) return (pl_yylval.ival=f, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC1)) |
260 | #define BOop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)BITOROP))) | |
261 | #define BAop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)BITANDOP))) | |
262 | #define SHop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)SHIFTOP))) | |
263 | #define PWop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)POWOP))) | |
264 | #define PMop(f) return(pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)MATCHOP)) | |
265 | #define Aop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)ADDOP))) | |
266 | #define Mop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)MULOP))) | |
267 | #define Eop(f) return (pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)EQOP)) | |
268 | #define Rop(f) return (pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)RELOP)) | |
2f3197b3 | 269 | |
a687059c LW |
270 | /* This bit of chicanery makes a unary function followed by |
271 | * a parenthesis into a function with one argument, highest precedence. | |
6f33ba73 RGS |
272 | * The UNIDOR macro is for unary functions that can be followed by the // |
273 | * operator (such as C<shift // 0>). | |
a687059c | 274 | */ |
376fcdbf | 275 | #define UNI2(f,x) { \ |
6154021b | 276 | pl_yylval.ival = f; \ |
376fcdbf AL |
277 | PL_expect = x; \ |
278 | PL_bufptr = s; \ | |
279 | PL_last_uni = PL_oldbufptr; \ | |
280 | PL_last_lop_op = f; \ | |
281 | if (*s == '(') \ | |
282 | return REPORT( (int)FUNC1 ); \ | |
29595ff2 | 283 | s = PEEKSPACE(s); \ |
376fcdbf AL |
284 | return REPORT( *s=='(' ? (int)FUNC1 : (int)UNIOP ); \ |
285 | } | |
6f33ba73 RGS |
286 | #define UNI(f) UNI2(f,XTERM) |
287 | #define UNIDOR(f) UNI2(f,XTERMORDORDOR) | |
a687059c | 288 | |
376fcdbf | 289 | #define UNIBRACK(f) { \ |
6154021b | 290 | pl_yylval.ival = f; \ |
376fcdbf AL |
291 | PL_bufptr = s; \ |
292 | PL_last_uni = PL_oldbufptr; \ | |
293 | if (*s == '(') \ | |
294 | return REPORT( (int)FUNC1 ); \ | |
29595ff2 | 295 | s = PEEKSPACE(s); \ |
376fcdbf AL |
296 | return REPORT( (*s == '(') ? (int)FUNC1 : (int)UNIOP ); \ |
297 | } | |
79072805 | 298 | |
9f68db38 | 299 | /* grandfather return to old style */ |
78cdf107 Z |
300 | #define OLDLOP(f) \ |
301 | do { \ | |
302 | if (!PL_lex_allbrackets && PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) \ | |
303 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; \ | |
304 | pl_yylval.ival = (f); \ | |
305 | PL_expect = XTERM; \ | |
306 | PL_bufptr = s; \ | |
307 | return (int)LSTOP; \ | |
308 | } while(0) | |
79072805 | 309 | |
8fa7f367 JH |
310 | #ifdef DEBUGGING |
311 | ||
6154021b | 312 | /* how to interpret the pl_yylval associated with the token */ |
bbf60fe6 DM |
313 | enum token_type { |
314 | TOKENTYPE_NONE, | |
315 | TOKENTYPE_IVAL, | |
6154021b | 316 | TOKENTYPE_OPNUM, /* pl_yylval.ival contains an opcode number */ |
bbf60fe6 DM |
317 | TOKENTYPE_PVAL, |
318 | TOKENTYPE_OPVAL, | |
319 | TOKENTYPE_GVVAL | |
320 | }; | |
321 | ||
6d4a66ac NC |
322 | static struct debug_tokens { |
323 | const int token; | |
324 | enum token_type type; | |
325 | const char *name; | |
326 | } const debug_tokens[] = | |
9041c2e3 | 327 | { |
bbf60fe6 DM |
328 | { ADDOP, TOKENTYPE_OPNUM, "ADDOP" }, |
329 | { ANDAND, TOKENTYPE_NONE, "ANDAND" }, | |
330 | { ANDOP, TOKENTYPE_NONE, "ANDOP" }, | |
331 | { ANONSUB, TOKENTYPE_IVAL, "ANONSUB" }, | |
332 | { ARROW, TOKENTYPE_NONE, "ARROW" }, | |
333 | { ASSIGNOP, TOKENTYPE_OPNUM, "ASSIGNOP" }, | |
334 | { BITANDOP, TOKENTYPE_OPNUM, "BITANDOP" }, | |
335 | { BITOROP, TOKENTYPE_OPNUM, "BITOROP" }, | |
336 | { COLONATTR, TOKENTYPE_NONE, "COLONATTR" }, | |
337 | { CONTINUE, TOKENTYPE_NONE, "CONTINUE" }, | |
0d863452 | 338 | { DEFAULT, TOKENTYPE_NONE, "DEFAULT" }, |
bbf60fe6 DM |
339 | { DO, TOKENTYPE_NONE, "DO" }, |
340 | { DOLSHARP, TOKENTYPE_NONE, "DOLSHARP" }, | |
341 | { DORDOR, TOKENTYPE_NONE, "DORDOR" }, | |
342 | { DOROP, TOKENTYPE_OPNUM, "DOROP" }, | |
343 | { DOTDOT, TOKENTYPE_IVAL, "DOTDOT" }, | |
344 | { ELSE, TOKENTYPE_NONE, "ELSE" }, | |
345 | { ELSIF, TOKENTYPE_IVAL, "ELSIF" }, | |
346 | { EQOP, TOKENTYPE_OPNUM, "EQOP" }, | |
347 | { FOR, TOKENTYPE_IVAL, "FOR" }, | |
348 | { FORMAT, TOKENTYPE_NONE, "FORMAT" }, | |
349 | { FUNC, TOKENTYPE_OPNUM, "FUNC" }, | |
350 | { FUNC0, TOKENTYPE_OPNUM, "FUNC0" }, | |
7eb971ee | 351 | { FUNC0OP, TOKENTYPE_OPVAL, "FUNC0OP" }, |
bbf60fe6 DM |
352 | { FUNC0SUB, TOKENTYPE_OPVAL, "FUNC0SUB" }, |
353 | { FUNC1, TOKENTYPE_OPNUM, "FUNC1" }, | |
354 | { FUNCMETH, TOKENTYPE_OPVAL, "FUNCMETH" }, | |
0d863452 | 355 | { GIVEN, TOKENTYPE_IVAL, "GIVEN" }, |
bbf60fe6 DM |
356 | { HASHBRACK, TOKENTYPE_NONE, "HASHBRACK" }, |
357 | { IF, TOKENTYPE_IVAL, "IF" }, | |
358 | { LABEL, TOKENTYPE_PVAL, "LABEL" }, | |
359 | { LOCAL, TOKENTYPE_IVAL, "LOCAL" }, | |
360 | { LOOPEX, TOKENTYPE_OPNUM, "LOOPEX" }, | |
361 | { LSTOP, TOKENTYPE_OPNUM, "LSTOP" }, | |
362 | { LSTOPSUB, TOKENTYPE_OPVAL, "LSTOPSUB" }, | |
363 | { MATCHOP, TOKENTYPE_OPNUM, "MATCHOP" }, | |
364 | { METHOD, TOKENTYPE_OPVAL, "METHOD" }, | |
365 | { MULOP, TOKENTYPE_OPNUM, "MULOP" }, | |
366 | { MY, TOKENTYPE_IVAL, "MY" }, | |
367 | { MYSUB, TOKENTYPE_NONE, "MYSUB" }, | |
368 | { NOAMP, TOKENTYPE_NONE, "NOAMP" }, | |
369 | { NOTOP, TOKENTYPE_NONE, "NOTOP" }, | |
370 | { OROP, TOKENTYPE_IVAL, "OROP" }, | |
371 | { OROR, TOKENTYPE_NONE, "OROR" }, | |
372 | { PACKAGE, TOKENTYPE_NONE, "PACKAGE" }, | |
88e1f1a2 JV |
373 | { PLUGEXPR, TOKENTYPE_OPVAL, "PLUGEXPR" }, |
374 | { PLUGSTMT, TOKENTYPE_OPVAL, "PLUGSTMT" }, | |
bbf60fe6 DM |
375 | { PMFUNC, TOKENTYPE_OPVAL, "PMFUNC" }, |
376 | { POSTDEC, TOKENTYPE_NONE, "POSTDEC" }, | |
377 | { POSTINC, TOKENTYPE_NONE, "POSTINC" }, | |
378 | { POWOP, TOKENTYPE_OPNUM, "POWOP" }, | |
379 | { PREDEC, TOKENTYPE_NONE, "PREDEC" }, | |
380 | { PREINC, TOKENTYPE_NONE, "PREINC" }, | |
381 | { PRIVATEREF, TOKENTYPE_OPVAL, "PRIVATEREF" }, | |
382 | { REFGEN, TOKENTYPE_NONE, "REFGEN" }, | |
383 | { RELOP, TOKENTYPE_OPNUM, "RELOP" }, | |
384 | { SHIFTOP, TOKENTYPE_OPNUM, "SHIFTOP" }, | |
385 | { SUB, TOKENTYPE_NONE, "SUB" }, | |
386 | { THING, TOKENTYPE_OPVAL, "THING" }, | |
387 | { UMINUS, TOKENTYPE_NONE, "UMINUS" }, | |
388 | { UNIOP, TOKENTYPE_OPNUM, "UNIOP" }, | |
389 | { UNIOPSUB, TOKENTYPE_OPVAL, "UNIOPSUB" }, | |
390 | { UNLESS, TOKENTYPE_IVAL, "UNLESS" }, | |
391 | { UNTIL, TOKENTYPE_IVAL, "UNTIL" }, | |
392 | { USE, TOKENTYPE_IVAL, "USE" }, | |
0d863452 | 393 | { WHEN, TOKENTYPE_IVAL, "WHEN" }, |
bbf60fe6 DM |
394 | { WHILE, TOKENTYPE_IVAL, "WHILE" }, |
395 | { WORD, TOKENTYPE_OPVAL, "WORD" }, | |
be25f609 | 396 | { YADAYADA, TOKENTYPE_IVAL, "YADAYADA" }, |
c35e046a | 397 | { 0, TOKENTYPE_NONE, NULL } |
bbf60fe6 DM |
398 | }; |
399 | ||
6154021b | 400 | /* dump the returned token in rv, plus any optional arg in pl_yylval */ |
998054bd | 401 | |
bbf60fe6 | 402 | STATIC int |
704d4215 | 403 | S_tokereport(pTHX_ I32 rv, const YYSTYPE* lvalp) |
bbf60fe6 | 404 | { |
97aff369 | 405 | dVAR; |
7918f24d NC |
406 | |
407 | PERL_ARGS_ASSERT_TOKEREPORT; | |
408 | ||
bbf60fe6 | 409 | if (DEBUG_T_TEST) { |
bd61b366 | 410 | const char *name = NULL; |
bbf60fe6 | 411 | enum token_type type = TOKENTYPE_NONE; |
f54cb97a | 412 | const struct debug_tokens *p; |
396482e1 | 413 | SV* const report = newSVpvs("<== "); |
bbf60fe6 | 414 | |
f54cb97a | 415 | for (p = debug_tokens; p->token; p++) { |
bbf60fe6 DM |
416 | if (p->token == (int)rv) { |
417 | name = p->name; | |
418 | type = p->type; | |
419 | break; | |
420 | } | |
421 | } | |
422 | if (name) | |
54667de8 | 423 | Perl_sv_catpv(aTHX_ report, name); |
bbf60fe6 DM |
424 | else if ((char)rv > ' ' && (char)rv < '~') |
425 | Perl_sv_catpvf(aTHX_ report, "'%c'", (char)rv); | |
426 | else if (!rv) | |
396482e1 | 427 | sv_catpvs(report, "EOF"); |
bbf60fe6 DM |
428 | else |
429 | Perl_sv_catpvf(aTHX_ report, "?? %"IVdf, (IV)rv); | |
430 | switch (type) { | |
431 | case TOKENTYPE_NONE: | |
432 | case TOKENTYPE_GVVAL: /* doesn't appear to be used */ | |
433 | break; | |
434 | case TOKENTYPE_IVAL: | |
704d4215 | 435 | Perl_sv_catpvf(aTHX_ report, "(ival=%"IVdf")", (IV)lvalp->ival); |
bbf60fe6 DM |
436 | break; |
437 | case TOKENTYPE_OPNUM: | |
438 | Perl_sv_catpvf(aTHX_ report, "(ival=op_%s)", | |
704d4215 | 439 | PL_op_name[lvalp->ival]); |
bbf60fe6 DM |
440 | break; |
441 | case TOKENTYPE_PVAL: | |
704d4215 | 442 | Perl_sv_catpvf(aTHX_ report, "(pval=\"%s\")", lvalp->pval); |
bbf60fe6 DM |
443 | break; |
444 | case TOKENTYPE_OPVAL: | |
704d4215 | 445 | if (lvalp->opval) { |
401441c0 | 446 | Perl_sv_catpvf(aTHX_ report, "(opval=op_%s)", |
704d4215 GG |
447 | PL_op_name[lvalp->opval->op_type]); |
448 | if (lvalp->opval->op_type == OP_CONST) { | |
b6007c36 | 449 | Perl_sv_catpvf(aTHX_ report, " %s", |
704d4215 | 450 | SvPEEK(cSVOPx_sv(lvalp->opval))); |
b6007c36 DM |
451 | } |
452 | ||
453 | } | |
401441c0 | 454 | else |
396482e1 | 455 | sv_catpvs(report, "(opval=null)"); |
bbf60fe6 DM |
456 | break; |
457 | } | |
b6007c36 | 458 | PerlIO_printf(Perl_debug_log, "### %s\n\n", SvPV_nolen_const(report)); |
bbf60fe6 DM |
459 | }; |
460 | return (int)rv; | |
998054bd SC |
461 | } |
462 | ||
b6007c36 DM |
463 | |
464 | /* print the buffer with suitable escapes */ | |
465 | ||
466 | STATIC void | |
15f169a1 | 467 | S_printbuf(pTHX_ const char *const fmt, const char *const s) |
b6007c36 | 468 | { |
396482e1 | 469 | SV* const tmp = newSVpvs(""); |
7918f24d NC |
470 | |
471 | PERL_ARGS_ASSERT_PRINTBUF; | |
472 | ||
b6007c36 DM |
473 | PerlIO_printf(Perl_debug_log, fmt, pv_display(tmp, s, strlen(s), 0, 60)); |
474 | SvREFCNT_dec(tmp); | |
475 | } | |
476 | ||
8fa7f367 JH |
477 | #endif |
478 | ||
8290c323 NC |
479 | static int |
480 | S_deprecate_commaless_var_list(pTHX) { | |
481 | PL_expect = XTERM; | |
482 | deprecate("comma-less variable list"); | |
483 | return REPORT(','); /* grandfather non-comma-format format */ | |
484 | } | |
485 | ||
ffb4593c NT |
486 | /* |
487 | * S_ao | |
488 | * | |
c963b151 BD |
489 | * This subroutine detects &&=, ||=, and //= and turns an ANDAND, OROR or DORDOR |
490 | * into an OP_ANDASSIGN, OP_ORASSIGN, or OP_DORASSIGN | |
ffb4593c NT |
491 | */ |
492 | ||
76e3520e | 493 | STATIC int |
cea2e8a9 | 494 | S_ao(pTHX_ int toketype) |
a0d0e21e | 495 | { |
97aff369 | 496 | dVAR; |
3280af22 NIS |
497 | if (*PL_bufptr == '=') { |
498 | PL_bufptr++; | |
a0d0e21e | 499 | if (toketype == ANDAND) |
6154021b | 500 | pl_yylval.ival = OP_ANDASSIGN; |
a0d0e21e | 501 | else if (toketype == OROR) |
6154021b | 502 | pl_yylval.ival = OP_ORASSIGN; |
c963b151 | 503 | else if (toketype == DORDOR) |
6154021b | 504 | pl_yylval.ival = OP_DORASSIGN; |
a0d0e21e LW |
505 | toketype = ASSIGNOP; |
506 | } | |
507 | return toketype; | |
508 | } | |
509 | ||
ffb4593c NT |
510 | /* |
511 | * S_no_op | |
512 | * When Perl expects an operator and finds something else, no_op | |
513 | * prints the warning. It always prints "<something> found where | |
514 | * operator expected. It prints "Missing semicolon on previous line?" | |
515 | * if the surprise occurs at the start of the line. "do you need to | |
516 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
517 | * where the compiler doesn't know if foo is a method call or a function. | |
518 | * It prints "Missing operator before end of line" if there's nothing | |
519 | * after the missing operator, or "... before <...>" if there is something | |
520 | * after the missing operator. | |
521 | */ | |
522 | ||
76e3520e | 523 | STATIC void |
15f169a1 | 524 | S_no_op(pTHX_ const char *const what, char *s) |
463ee0b2 | 525 | { |
97aff369 | 526 | dVAR; |
9d4ba2ae AL |
527 | char * const oldbp = PL_bufptr; |
528 | const bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 529 | |
7918f24d NC |
530 | PERL_ARGS_ASSERT_NO_OP; |
531 | ||
1189a94a GS |
532 | if (!s) |
533 | s = oldbp; | |
07c798fb | 534 | else |
1189a94a | 535 | PL_bufptr = s; |
cea2e8a9 | 536 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
56da5a46 RGS |
537 | if (ckWARN_d(WARN_SYNTAX)) { |
538 | if (is_first) | |
539 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
540 | "\t(Missing semicolon on previous line?)\n"); | |
541 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { | |
f54cb97a | 542 | const char *t; |
c35e046a AL |
543 | for (t = PL_oldoldbufptr; (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) |
544 | NOOP; | |
56da5a46 RGS |
545 | if (t < PL_bufptr && isSPACE(*t)) |
546 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
547 | "\t(Do you need to predeclare %.*s?)\n", | |
551405c4 | 548 | (int)(t - PL_oldoldbufptr), PL_oldoldbufptr); |
56da5a46 RGS |
549 | } |
550 | else { | |
551 | assert(s >= oldbp); | |
552 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
551405c4 | 553 | "\t(Missing operator before %.*s?)\n", (int)(s - oldbp), oldbp); |
56da5a46 | 554 | } |
07c798fb | 555 | } |
3280af22 | 556 | PL_bufptr = oldbp; |
8990e307 LW |
557 | } |
558 | ||
ffb4593c NT |
559 | /* |
560 | * S_missingterm | |
561 | * Complain about missing quote/regexp/heredoc terminator. | |
d4c19fe8 | 562 | * If it's called with NULL then it cauterizes the line buffer. |
ffb4593c NT |
563 | * If we're in a delimited string and the delimiter is a control |
564 | * character, it's reformatted into a two-char sequence like ^C. | |
565 | * This is fatal. | |
566 | */ | |
567 | ||
76e3520e | 568 | STATIC void |
cea2e8a9 | 569 | S_missingterm(pTHX_ char *s) |
8990e307 | 570 | { |
97aff369 | 571 | dVAR; |
8990e307 LW |
572 | char tmpbuf[3]; |
573 | char q; | |
574 | if (s) { | |
9d4ba2ae | 575 | char * const nl = strrchr(s,'\n'); |
d2719217 | 576 | if (nl) |
8990e307 LW |
577 | *nl = '\0'; |
578 | } | |
463559e7 | 579 | else if (isCNTRL(PL_multi_close)) { |
8990e307 | 580 | *tmpbuf = '^'; |
585ec06d | 581 | tmpbuf[1] = (char)toCTRL(PL_multi_close); |
8990e307 LW |
582 | tmpbuf[2] = '\0'; |
583 | s = tmpbuf; | |
584 | } | |
585 | else { | |
eb160463 | 586 | *tmpbuf = (char)PL_multi_close; |
8990e307 LW |
587 | tmpbuf[1] = '\0'; |
588 | s = tmpbuf; | |
589 | } | |
590 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 591 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 592 | } |
79072805 | 593 | |
0d863452 | 594 | /* |
0d863452 RH |
595 | * Check whether the named feature is enabled. |
596 | */ | |
26ea9e12 NC |
597 | bool |
598 | Perl_feature_is_enabled(pTHX_ const char *const name, STRLEN namelen) | |
0d863452 | 599 | { |
97aff369 | 600 | dVAR; |
0d863452 | 601 | HV * const hinthv = GvHV(PL_hintgv); |
4a731d7b | 602 | char he_name[8 + MAX_FEATURE_LEN] = "feature_"; |
7918f24d NC |
603 | |
604 | PERL_ARGS_ASSERT_FEATURE_IS_ENABLED; | |
605 | ||
26ea9e12 NC |
606 | if (namelen > MAX_FEATURE_LEN) |
607 | return FALSE; | |
4a731d7b | 608 | memcpy(&he_name[8], name, namelen); |
d4c19fe8 | 609 | |
7b9ef140 | 610 | return (hinthv && hv_exists(hinthv, he_name, 8 + namelen)); |
0d863452 RH |
611 | } |
612 | ||
ffb4593c | 613 | /* |
9cbb5ea2 GS |
614 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
615 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
616 | */ |
617 | ||
c39cd008 GS |
618 | #ifdef PERL_CR_FILTER |
619 | static void | |
620 | strip_return(SV *sv) | |
621 | { | |
95a20fc0 | 622 | register const char *s = SvPVX_const(sv); |
9d4ba2ae | 623 | register const char * const e = s + SvCUR(sv); |
7918f24d NC |
624 | |
625 | PERL_ARGS_ASSERT_STRIP_RETURN; | |
626 | ||
c39cd008 GS |
627 | /* outer loop optimized to do nothing if there are no CR-LFs */ |
628 | while (s < e) { | |
629 | if (*s++ == '\r' && *s == '\n') { | |
630 | /* hit a CR-LF, need to copy the rest */ | |
631 | register char *d = s - 1; | |
632 | *d++ = *s++; | |
633 | while (s < e) { | |
634 | if (*s == '\r' && s[1] == '\n') | |
635 | s++; | |
636 | *d++ = *s++; | |
637 | } | |
638 | SvCUR(sv) -= s - d; | |
639 | return; | |
640 | } | |
641 | } | |
642 | } | |
a868473f | 643 | |
76e3520e | 644 | STATIC I32 |
c39cd008 | 645 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 646 | { |
f54cb97a | 647 | const I32 count = FILTER_READ(idx+1, sv, maxlen); |
c39cd008 GS |
648 | if (count > 0 && !maxlen) |
649 | strip_return(sv); | |
650 | return count; | |
a868473f NIS |
651 | } |
652 | #endif | |
653 | ||
ffb4593c | 654 | /* |
8eaa0acf Z |
655 | =for apidoc Amx|void|lex_start|SV *line|PerlIO *rsfp|U32 flags |
656 | ||
657 | Creates and initialises a new lexer/parser state object, supplying | |
658 | a context in which to lex and parse from a new source of Perl code. | |
659 | A pointer to the new state object is placed in L</PL_parser>. An entry | |
660 | is made on the save stack so that upon unwinding the new state object | |
661 | will be destroyed and the former value of L</PL_parser> will be restored. | |
662 | Nothing else need be done to clean up the parsing context. | |
663 | ||
664 | The code to be parsed comes from I<line> and I<rsfp>. I<line>, if | |
665 | non-null, provides a string (in SV form) containing code to be parsed. | |
666 | A copy of the string is made, so subsequent modification of I<line> | |
667 | does not affect parsing. I<rsfp>, if non-null, provides an input stream | |
668 | from which code will be read to be parsed. If both are non-null, the | |
669 | code in I<line> comes first and must consist of complete lines of input, | |
670 | and I<rsfp> supplies the remainder of the source. | |
671 | ||
672 | The I<flags> parameter is reserved for future use, and must always | |
27fcb6ee FC |
673 | be zero, except for one flag that is currently reserved for perl's internal |
674 | use. | |
8eaa0acf Z |
675 | |
676 | =cut | |
677 | */ | |
ffb4593c | 678 | |
27fcb6ee FC |
679 | /* LEX_START_SAME_FILTER indicates that this is not a new file, so it |
680 | can share filters with the current parser. */ | |
681 | ||
a0d0e21e | 682 | void |
8eaa0acf | 683 | Perl_lex_start(pTHX_ SV *line, PerlIO *rsfp, U32 flags) |
79072805 | 684 | { |
97aff369 | 685 | dVAR; |
6ef55633 | 686 | const char *s = NULL; |
8990e307 | 687 | STRLEN len; |
5486870f | 688 | yy_parser *parser, *oparser; |
27fcb6ee | 689 | if (flags && flags != LEX_START_SAME_FILTER) |
8eaa0acf | 690 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_start"); |
acdf0a21 DM |
691 | |
692 | /* create and initialise a parser */ | |
693 | ||
199e78b7 | 694 | Newxz(parser, 1, yy_parser); |
5486870f | 695 | parser->old_parser = oparser = PL_parser; |
acdf0a21 DM |
696 | PL_parser = parser; |
697 | ||
28ac2b49 Z |
698 | parser->stack = NULL; |
699 | parser->ps = NULL; | |
700 | parser->stack_size = 0; | |
acdf0a21 | 701 | |
e3abe207 DM |
702 | /* on scope exit, free this parser and restore any outer one */ |
703 | SAVEPARSER(parser); | |
7c4baf47 | 704 | parser->saved_curcop = PL_curcop; |
e3abe207 | 705 | |
acdf0a21 | 706 | /* initialise lexer state */ |
8990e307 | 707 | |
fb205e7a DM |
708 | #ifdef PERL_MAD |
709 | parser->curforce = -1; | |
710 | #else | |
711 | parser->nexttoke = 0; | |
712 | #endif | |
ca4cfd28 | 713 | parser->error_count = oparser ? oparser->error_count : 0; |
c2598295 | 714 | parser->copline = NOLINE; |
5afb0a62 | 715 | parser->lex_state = LEX_NORMAL; |
c2598295 | 716 | parser->expect = XSTATE; |
2f9285f8 | 717 | parser->rsfp = rsfp; |
27fcb6ee FC |
718 | parser->rsfp_filters = |
719 | !(flags & LEX_START_SAME_FILTER) || !oparser | |
720 | ? newAV() | |
721 | : MUTABLE_AV(SvREFCNT_inc(oparser->rsfp_filters)); | |
2f9285f8 | 722 | |
199e78b7 DM |
723 | Newx(parser->lex_brackstack, 120, char); |
724 | Newx(parser->lex_casestack, 12, char); | |
725 | *parser->lex_casestack = '\0'; | |
02b34bbe | 726 | |
10efb74f NC |
727 | if (line) { |
728 | s = SvPV_const(line, len); | |
729 | } else { | |
730 | len = 0; | |
731 | } | |
bdc0bf6f | 732 | |
10efb74f | 733 | if (!len) { |
bdc0bf6f | 734 | parser->linestr = newSVpvs("\n;"); |
805700c1 | 735 | } else { |
719a9bb0 | 736 | parser->linestr = newSVpvn_flags(s, len, SvUTF8(line)); |
10efb74f | 737 | if (s[len-1] != ';') |
bdc0bf6f | 738 | sv_catpvs(parser->linestr, "\n;"); |
8990e307 | 739 | } |
f06b5848 DM |
740 | parser->oldoldbufptr = |
741 | parser->oldbufptr = | |
742 | parser->bufptr = | |
743 | parser->linestart = SvPVX(parser->linestr); | |
744 | parser->bufend = parser->bufptr + SvCUR(parser->linestr); | |
745 | parser->last_lop = parser->last_uni = NULL; | |
737c24fc Z |
746 | |
747 | parser->in_pod = 0; | |
79072805 | 748 | } |
a687059c | 749 | |
e3abe207 DM |
750 | |
751 | /* delete a parser object */ | |
752 | ||
753 | void | |
754 | Perl_parser_free(pTHX_ const yy_parser *parser) | |
755 | { | |
7918f24d NC |
756 | PERL_ARGS_ASSERT_PARSER_FREE; |
757 | ||
7c4baf47 | 758 | PL_curcop = parser->saved_curcop; |
bdc0bf6f DM |
759 | SvREFCNT_dec(parser->linestr); |
760 | ||
2f9285f8 DM |
761 | if (parser->rsfp == PerlIO_stdin()) |
762 | PerlIO_clearerr(parser->rsfp); | |
799361c3 SH |
763 | else if (parser->rsfp && (!parser->old_parser || |
764 | (parser->old_parser && parser->rsfp != parser->old_parser->rsfp))) | |
2f9285f8 | 765 | PerlIO_close(parser->rsfp); |
5486870f | 766 | SvREFCNT_dec(parser->rsfp_filters); |
2f9285f8 | 767 | |
e3abe207 DM |
768 | Safefree(parser->lex_brackstack); |
769 | Safefree(parser->lex_casestack); | |
770 | PL_parser = parser->old_parser; | |
771 | Safefree(parser); | |
772 | } | |
773 | ||
774 | ||
ffb4593c | 775 | /* |
f0e67a1d Z |
776 | =for apidoc AmxU|SV *|PL_parser-E<gt>linestr |
777 | ||
778 | Buffer scalar containing the chunk currently under consideration of the | |
779 | text currently being lexed. This is always a plain string scalar (for | |
780 | which C<SvPOK> is true). It is not intended to be used as a scalar by | |
781 | normal scalar means; instead refer to the buffer directly by the pointer | |
782 | variables described below. | |
783 | ||
784 | The lexer maintains various C<char*> pointers to things in the | |
785 | C<PL_parser-E<gt>linestr> buffer. If C<PL_parser-E<gt>linestr> is ever | |
786 | reallocated, all of these pointers must be updated. Don't attempt to | |
787 | do this manually, but rather use L</lex_grow_linestr> if you need to | |
788 | reallocate the buffer. | |
789 | ||
790 | The content of the text chunk in the buffer is commonly exactly one | |
791 | complete line of input, up to and including a newline terminator, | |
792 | but there are situations where it is otherwise. The octets of the | |
793 | buffer may be intended to be interpreted as either UTF-8 or Latin-1. | |
794 | The function L</lex_bufutf8> tells you which. Do not use the C<SvUTF8> | |
795 | flag on this scalar, which may disagree with it. | |
796 | ||
797 | For direct examination of the buffer, the variable | |
798 | L</PL_parser-E<gt>bufend> points to the end of the buffer. The current | |
799 | lexing position is pointed to by L</PL_parser-E<gt>bufptr>. Direct use | |
800 | of these pointers is usually preferable to examination of the scalar | |
801 | through normal scalar means. | |
802 | ||
803 | =for apidoc AmxU|char *|PL_parser-E<gt>bufend | |
804 | ||
805 | Direct pointer to the end of the chunk of text currently being lexed, the | |
806 | end of the lexer buffer. This is equal to C<SvPVX(PL_parser-E<gt>linestr) | |
807 | + SvCUR(PL_parser-E<gt>linestr)>. A NUL character (zero octet) is | |
808 | always located at the end of the buffer, and does not count as part of | |
809 | the buffer's contents. | |
810 | ||
811 | =for apidoc AmxU|char *|PL_parser-E<gt>bufptr | |
812 | ||
813 | Points to the current position of lexing inside the lexer buffer. | |
814 | Characters around this point may be freely examined, within | |
815 | the range delimited by C<SvPVX(L</PL_parser-E<gt>linestr>)> and | |
816 | L</PL_parser-E<gt>bufend>. The octets of the buffer may be intended to be | |
817 | interpreted as either UTF-8 or Latin-1, as indicated by L</lex_bufutf8>. | |
818 | ||
819 | Lexing code (whether in the Perl core or not) moves this pointer past | |
820 | the characters that it consumes. It is also expected to perform some | |
821 | bookkeeping whenever a newline character is consumed. This movement | |
822 | can be more conveniently performed by the function L</lex_read_to>, | |
823 | which handles newlines appropriately. | |
824 | ||
825 | Interpretation of the buffer's octets can be abstracted out by | |
826 | using the slightly higher-level functions L</lex_peek_unichar> and | |
827 | L</lex_read_unichar>. | |
828 | ||
829 | =for apidoc AmxU|char *|PL_parser-E<gt>linestart | |
830 | ||
831 | Points to the start of the current line inside the lexer buffer. | |
832 | This is useful for indicating at which column an error occurred, and | |
833 | not much else. This must be updated by any lexing code that consumes | |
834 | a newline; the function L</lex_read_to> handles this detail. | |
835 | ||
836 | =cut | |
837 | */ | |
838 | ||
839 | /* | |
840 | =for apidoc Amx|bool|lex_bufutf8 | |
841 | ||
842 | Indicates whether the octets in the lexer buffer | |
843 | (L</PL_parser-E<gt>linestr>) should be interpreted as the UTF-8 encoding | |
844 | of Unicode characters. If not, they should be interpreted as Latin-1 | |
845 | characters. This is analogous to the C<SvUTF8> flag for scalars. | |
846 | ||
847 | In UTF-8 mode, it is not guaranteed that the lexer buffer actually | |
848 | contains valid UTF-8. Lexing code must be robust in the face of invalid | |
849 | encoding. | |
850 | ||
851 | The actual C<SvUTF8> flag of the L</PL_parser-E<gt>linestr> scalar | |
852 | is significant, but not the whole story regarding the input character | |
853 | encoding. Normally, when a file is being read, the scalar contains octets | |
854 | and its C<SvUTF8> flag is off, but the octets should be interpreted as | |
855 | UTF-8 if the C<use utf8> pragma is in effect. During a string eval, | |
856 | however, the scalar may have the C<SvUTF8> flag on, and in this case its | |
857 | octets should be interpreted as UTF-8 unless the C<use bytes> pragma | |
858 | is in effect. This logic may change in the future; use this function | |
859 | instead of implementing the logic yourself. | |
860 | ||
861 | =cut | |
862 | */ | |
863 | ||
864 | bool | |
865 | Perl_lex_bufutf8(pTHX) | |
866 | { | |
867 | return UTF; | |
868 | } | |
869 | ||
870 | /* | |
871 | =for apidoc Amx|char *|lex_grow_linestr|STRLEN len | |
872 | ||
873 | Reallocates the lexer buffer (L</PL_parser-E<gt>linestr>) to accommodate | |
874 | at least I<len> octets (including terminating NUL). Returns a | |
875 | pointer to the reallocated buffer. This is necessary before making | |
876 | any direct modification of the buffer that would increase its length. | |
877 | L</lex_stuff_pvn> provides a more convenient way to insert text into | |
878 | the buffer. | |
879 | ||
880 | Do not use C<SvGROW> or C<sv_grow> directly on C<PL_parser-E<gt>linestr>; | |
881 | this function updates all of the lexer's variables that point directly | |
882 | into the buffer. | |
883 | ||
884 | =cut | |
885 | */ | |
886 | ||
887 | char * | |
888 | Perl_lex_grow_linestr(pTHX_ STRLEN len) | |
889 | { | |
890 | SV *linestr; | |
891 | char *buf; | |
892 | STRLEN bufend_pos, bufptr_pos, oldbufptr_pos, oldoldbufptr_pos; | |
893 | STRLEN linestart_pos, last_uni_pos, last_lop_pos; | |
894 | linestr = PL_parser->linestr; | |
895 | buf = SvPVX(linestr); | |
896 | if (len <= SvLEN(linestr)) | |
897 | return buf; | |
898 | bufend_pos = PL_parser->bufend - buf; | |
899 | bufptr_pos = PL_parser->bufptr - buf; | |
900 | oldbufptr_pos = PL_parser->oldbufptr - buf; | |
901 | oldoldbufptr_pos = PL_parser->oldoldbufptr - buf; | |
902 | linestart_pos = PL_parser->linestart - buf; | |
903 | last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
904 | last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
905 | buf = sv_grow(linestr, len); | |
906 | PL_parser->bufend = buf + bufend_pos; | |
907 | PL_parser->bufptr = buf + bufptr_pos; | |
908 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
909 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
910 | PL_parser->linestart = buf + linestart_pos; | |
911 | if (PL_parser->last_uni) | |
912 | PL_parser->last_uni = buf + last_uni_pos; | |
913 | if (PL_parser->last_lop) | |
914 | PL_parser->last_lop = buf + last_lop_pos; | |
915 | return buf; | |
916 | } | |
917 | ||
918 | /* | |
83aa740e | 919 | =for apidoc Amx|void|lex_stuff_pvn|const char *pv|STRLEN len|U32 flags |
f0e67a1d Z |
920 | |
921 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
922 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
923 | reallocating the buffer if necessary. This means that lexing code that | |
924 | runs later will see the characters as if they had appeared in the input. | |
925 | It is not recommended to do this as part of normal parsing, and most | |
926 | uses of this facility run the risk of the inserted characters being | |
927 | interpreted in an unintended manner. | |
928 | ||
929 | The string to be inserted is represented by I<len> octets starting | |
930 | at I<pv>. These octets are interpreted as either UTF-8 or Latin-1, | |
931 | according to whether the C<LEX_STUFF_UTF8> flag is set in I<flags>. | |
932 | The characters are recoded for the lexer buffer, according to how the | |
933 | buffer is currently being interpreted (L</lex_bufutf8>). If a string | |
9dcc53ea | 934 | to be inserted is available as a Perl scalar, the L</lex_stuff_sv> |
f0e67a1d Z |
935 | function is more convenient. |
936 | ||
937 | =cut | |
938 | */ | |
939 | ||
940 | void | |
83aa740e | 941 | Perl_lex_stuff_pvn(pTHX_ const char *pv, STRLEN len, U32 flags) |
f0e67a1d | 942 | { |
749123ff | 943 | dVAR; |
f0e67a1d Z |
944 | char *bufptr; |
945 | PERL_ARGS_ASSERT_LEX_STUFF_PVN; | |
946 | if (flags & ~(LEX_STUFF_UTF8)) | |
947 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_pvn"); | |
948 | if (UTF) { | |
949 | if (flags & LEX_STUFF_UTF8) { | |
950 | goto plain_copy; | |
951 | } else { | |
952 | STRLEN highhalf = 0; | |
83aa740e | 953 | const char *p, *e = pv+len; |
f0e67a1d Z |
954 | for (p = pv; p != e; p++) |
955 | highhalf += !!(((U8)*p) & 0x80); | |
956 | if (!highhalf) | |
957 | goto plain_copy; | |
958 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len+highhalf); | |
959 | bufptr = PL_parser->bufptr; | |
960 | Move(bufptr, bufptr+len+highhalf, PL_parser->bufend+1-bufptr, char); | |
255fdf19 Z |
961 | SvCUR_set(PL_parser->linestr, |
962 | SvCUR(PL_parser->linestr) + len+highhalf); | |
f0e67a1d Z |
963 | PL_parser->bufend += len+highhalf; |
964 | for (p = pv; p != e; p++) { | |
965 | U8 c = (U8)*p; | |
966 | if (c & 0x80) { | |
967 | *bufptr++ = (char)(0xc0 | (c >> 6)); | |
968 | *bufptr++ = (char)(0x80 | (c & 0x3f)); | |
969 | } else { | |
970 | *bufptr++ = (char)c; | |
971 | } | |
972 | } | |
973 | } | |
974 | } else { | |
975 | if (flags & LEX_STUFF_UTF8) { | |
976 | STRLEN highhalf = 0; | |
83aa740e | 977 | const char *p, *e = pv+len; |
f0e67a1d Z |
978 | for (p = pv; p != e; p++) { |
979 | U8 c = (U8)*p; | |
980 | if (c >= 0xc4) { | |
981 | Perl_croak(aTHX_ "Lexing code attempted to stuff " | |
982 | "non-Latin-1 character into Latin-1 input"); | |
983 | } else if (c >= 0xc2 && p+1 != e && | |
984 | (((U8)p[1]) & 0xc0) == 0x80) { | |
985 | p++; | |
986 | highhalf++; | |
987 | } else if (c >= 0x80) { | |
988 | /* malformed UTF-8 */ | |
989 | ENTER; | |
990 | SAVESPTR(PL_warnhook); | |
991 | PL_warnhook = PERL_WARNHOOK_FATAL; | |
992 | utf8n_to_uvuni((U8*)p, e-p, NULL, 0); | |
993 | LEAVE; | |
994 | } | |
995 | } | |
996 | if (!highhalf) | |
997 | goto plain_copy; | |
998 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len-highhalf); | |
999 | bufptr = PL_parser->bufptr; | |
1000 | Move(bufptr, bufptr+len-highhalf, PL_parser->bufend+1-bufptr, char); | |
255fdf19 Z |
1001 | SvCUR_set(PL_parser->linestr, |
1002 | SvCUR(PL_parser->linestr) + len-highhalf); | |
f0e67a1d Z |
1003 | PL_parser->bufend += len-highhalf; |
1004 | for (p = pv; p != e; p++) { | |
1005 | U8 c = (U8)*p; | |
1006 | if (c & 0x80) { | |
1007 | *bufptr++ = (char)(((c & 0x3) << 6) | (p[1] & 0x3f)); | |
1008 | p++; | |
1009 | } else { | |
1010 | *bufptr++ = (char)c; | |
1011 | } | |
1012 | } | |
1013 | } else { | |
1014 | plain_copy: | |
1015 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len); | |
1016 | bufptr = PL_parser->bufptr; | |
1017 | Move(bufptr, bufptr+len, PL_parser->bufend+1-bufptr, char); | |
255fdf19 | 1018 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) + len); |
f0e67a1d Z |
1019 | PL_parser->bufend += len; |
1020 | Copy(pv, bufptr, len, char); | |
1021 | } | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | /* | |
9dcc53ea Z |
1026 | =for apidoc Amx|void|lex_stuff_pv|const char *pv|U32 flags |
1027 | ||
1028 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
1029 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
1030 | reallocating the buffer if necessary. This means that lexing code that | |
1031 | runs later will see the characters as if they had appeared in the input. | |
1032 | It is not recommended to do this as part of normal parsing, and most | |
1033 | uses of this facility run the risk of the inserted characters being | |
1034 | interpreted in an unintended manner. | |
1035 | ||
1036 | The string to be inserted is represented by octets starting at I<pv> | |
1037 | and continuing to the first nul. These octets are interpreted as either | |
1038 | UTF-8 or Latin-1, according to whether the C<LEX_STUFF_UTF8> flag is set | |
1039 | in I<flags>. The characters are recoded for the lexer buffer, according | |
1040 | to how the buffer is currently being interpreted (L</lex_bufutf8>). | |
1041 | If it is not convenient to nul-terminate a string to be inserted, the | |
1042 | L</lex_stuff_pvn> function is more appropriate. | |
1043 | ||
1044 | =cut | |
1045 | */ | |
1046 | ||
1047 | void | |
1048 | Perl_lex_stuff_pv(pTHX_ const char *pv, U32 flags) | |
1049 | { | |
1050 | PERL_ARGS_ASSERT_LEX_STUFF_PV; | |
1051 | lex_stuff_pvn(pv, strlen(pv), flags); | |
1052 | } | |
1053 | ||
1054 | /* | |
f0e67a1d Z |
1055 | =for apidoc Amx|void|lex_stuff_sv|SV *sv|U32 flags |
1056 | ||
1057 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
1058 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
1059 | reallocating the buffer if necessary. This means that lexing code that | |
1060 | runs later will see the characters as if they had appeared in the input. | |
1061 | It is not recommended to do this as part of normal parsing, and most | |
1062 | uses of this facility run the risk of the inserted characters being | |
1063 | interpreted in an unintended manner. | |
1064 | ||
1065 | The string to be inserted is the string value of I<sv>. The characters | |
1066 | are recoded for the lexer buffer, according to how the buffer is currently | |
9dcc53ea | 1067 | being interpreted (L</lex_bufutf8>). If a string to be inserted is |
f0e67a1d Z |
1068 | not already a Perl scalar, the L</lex_stuff_pvn> function avoids the |
1069 | need to construct a scalar. | |
1070 | ||
1071 | =cut | |
1072 | */ | |
1073 | ||
1074 | void | |
1075 | Perl_lex_stuff_sv(pTHX_ SV *sv, U32 flags) | |
1076 | { | |
1077 | char *pv; | |
1078 | STRLEN len; | |
1079 | PERL_ARGS_ASSERT_LEX_STUFF_SV; | |
1080 | if (flags) | |
1081 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_sv"); | |
1082 | pv = SvPV(sv, len); | |
1083 | lex_stuff_pvn(pv, len, flags | (SvUTF8(sv) ? LEX_STUFF_UTF8 : 0)); | |
1084 | } | |
1085 | ||
1086 | /* | |
1087 | =for apidoc Amx|void|lex_unstuff|char *ptr | |
1088 | ||
1089 | Discards text about to be lexed, from L</PL_parser-E<gt>bufptr> up to | |
1090 | I<ptr>. Text following I<ptr> will be moved, and the buffer shortened. | |
1091 | This hides the discarded text from any lexing code that runs later, | |
1092 | as if the text had never appeared. | |
1093 | ||
1094 | This is not the normal way to consume lexed text. For that, use | |
1095 | L</lex_read_to>. | |
1096 | ||
1097 | =cut | |
1098 | */ | |
1099 | ||
1100 | void | |
1101 | Perl_lex_unstuff(pTHX_ char *ptr) | |
1102 | { | |
1103 | char *buf, *bufend; | |
1104 | STRLEN unstuff_len; | |
1105 | PERL_ARGS_ASSERT_LEX_UNSTUFF; | |
1106 | buf = PL_parser->bufptr; | |
1107 | if (ptr < buf) | |
1108 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff"); | |
1109 | if (ptr == buf) | |
1110 | return; | |
1111 | bufend = PL_parser->bufend; | |
1112 | if (ptr > bufend) | |
1113 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff"); | |
1114 | unstuff_len = ptr - buf; | |
1115 | Move(ptr, buf, bufend+1-ptr, char); | |
1116 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - unstuff_len); | |
1117 | PL_parser->bufend = bufend - unstuff_len; | |
1118 | } | |
1119 | ||
1120 | /* | |
1121 | =for apidoc Amx|void|lex_read_to|char *ptr | |
1122 | ||
1123 | Consume text in the lexer buffer, from L</PL_parser-E<gt>bufptr> up | |
1124 | to I<ptr>. This advances L</PL_parser-E<gt>bufptr> to match I<ptr>, | |
1125 | performing the correct bookkeeping whenever a newline character is passed. | |
1126 | This is the normal way to consume lexed text. | |
1127 | ||
1128 | Interpretation of the buffer's octets can be abstracted out by | |
1129 | using the slightly higher-level functions L</lex_peek_unichar> and | |
1130 | L</lex_read_unichar>. | |
1131 | ||
1132 | =cut | |
1133 | */ | |
1134 | ||
1135 | void | |
1136 | Perl_lex_read_to(pTHX_ char *ptr) | |
1137 | { | |
1138 | char *s; | |
1139 | PERL_ARGS_ASSERT_LEX_READ_TO; | |
1140 | s = PL_parser->bufptr; | |
1141 | if (ptr < s || ptr > PL_parser->bufend) | |
1142 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_to"); | |
1143 | for (; s != ptr; s++) | |
1144 | if (*s == '\n') { | |
1145 | CopLINE_inc(PL_curcop); | |
1146 | PL_parser->linestart = s+1; | |
1147 | } | |
1148 | PL_parser->bufptr = ptr; | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | =for apidoc Amx|void|lex_discard_to|char *ptr | |
1153 | ||
1154 | Discards the first part of the L</PL_parser-E<gt>linestr> buffer, | |
1155 | up to I<ptr>. The remaining content of the buffer will be moved, and | |
1156 | all pointers into the buffer updated appropriately. I<ptr> must not | |
1157 | be later in the buffer than the position of L</PL_parser-E<gt>bufptr>: | |
1158 | it is not permitted to discard text that has yet to be lexed. | |
1159 | ||
1160 | Normally it is not necessarily to do this directly, because it suffices to | |
1161 | use the implicit discarding behaviour of L</lex_next_chunk> and things | |
1162 | based on it. However, if a token stretches across multiple lines, | |
1f317c95 | 1163 | and the lexing code has kept multiple lines of text in the buffer for |
f0e67a1d Z |
1164 | that purpose, then after completion of the token it would be wise to |
1165 | explicitly discard the now-unneeded earlier lines, to avoid future | |
1166 | multi-line tokens growing the buffer without bound. | |
1167 | ||
1168 | =cut | |
1169 | */ | |
1170 | ||
1171 | void | |
1172 | Perl_lex_discard_to(pTHX_ char *ptr) | |
1173 | { | |
1174 | char *buf; | |
1175 | STRLEN discard_len; | |
1176 | PERL_ARGS_ASSERT_LEX_DISCARD_TO; | |
1177 | buf = SvPVX(PL_parser->linestr); | |
1178 | if (ptr < buf) | |
1179 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to"); | |
1180 | if (ptr == buf) | |
1181 | return; | |
1182 | if (ptr > PL_parser->bufptr) | |
1183 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to"); | |
1184 | discard_len = ptr - buf; | |
1185 | if (PL_parser->oldbufptr < ptr) | |
1186 | PL_parser->oldbufptr = ptr; | |
1187 | if (PL_parser->oldoldbufptr < ptr) | |
1188 | PL_parser->oldoldbufptr = ptr; | |
1189 | if (PL_parser->last_uni && PL_parser->last_uni < ptr) | |
1190 | PL_parser->last_uni = NULL; | |
1191 | if (PL_parser->last_lop && PL_parser->last_lop < ptr) | |
1192 | PL_parser->last_lop = NULL; | |
1193 | Move(ptr, buf, PL_parser->bufend+1-ptr, char); | |
1194 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - discard_len); | |
1195 | PL_parser->bufend -= discard_len; | |
1196 | PL_parser->bufptr -= discard_len; | |
1197 | PL_parser->oldbufptr -= discard_len; | |
1198 | PL_parser->oldoldbufptr -= discard_len; | |
1199 | if (PL_parser->last_uni) | |
1200 | PL_parser->last_uni -= discard_len; | |
1201 | if (PL_parser->last_lop) | |
1202 | PL_parser->last_lop -= discard_len; | |
1203 | } | |
1204 | ||
1205 | /* | |
1206 | =for apidoc Amx|bool|lex_next_chunk|U32 flags | |
1207 | ||
1208 | Reads in the next chunk of text to be lexed, appending it to | |
1209 | L</PL_parser-E<gt>linestr>. This should be called when lexing code has | |
1210 | looked to the end of the current chunk and wants to know more. It is | |
1211 | usual, but not necessary, for lexing to have consumed the entirety of | |
1212 | the current chunk at this time. | |
1213 | ||
1214 | If L</PL_parser-E<gt>bufptr> is pointing to the very end of the current | |
1215 | chunk (i.e., the current chunk has been entirely consumed), normally the | |
1216 | current chunk will be discarded at the same time that the new chunk is | |
1217 | read in. If I<flags> includes C<LEX_KEEP_PREVIOUS>, the current chunk | |
1218 | will not be discarded. If the current chunk has not been entirely | |
1219 | consumed, then it will not be discarded regardless of the flag. | |
1220 | ||
1221 | Returns true if some new text was added to the buffer, or false if the | |
1222 | buffer has reached the end of the input text. | |
1223 | ||
1224 | =cut | |
1225 | */ | |
1226 | ||
1227 | #define LEX_FAKE_EOF 0x80000000 | |
1228 | ||
1229 | bool | |
1230 | Perl_lex_next_chunk(pTHX_ U32 flags) | |
1231 | { | |
1232 | SV *linestr; | |
1233 | char *buf; | |
1234 | STRLEN old_bufend_pos, new_bufend_pos; | |
1235 | STRLEN bufptr_pos, oldbufptr_pos, oldoldbufptr_pos; | |
1236 | STRLEN linestart_pos, last_uni_pos, last_lop_pos; | |
17cc9359 | 1237 | bool got_some_for_debugger = 0; |
f0e67a1d Z |
1238 | bool got_some; |
1239 | if (flags & ~(LEX_KEEP_PREVIOUS|LEX_FAKE_EOF)) | |
1240 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_next_chunk"); | |
f0e67a1d Z |
1241 | linestr = PL_parser->linestr; |
1242 | buf = SvPVX(linestr); | |
1243 | if (!(flags & LEX_KEEP_PREVIOUS) && | |
1244 | PL_parser->bufptr == PL_parser->bufend) { | |
1245 | old_bufend_pos = bufptr_pos = oldbufptr_pos = oldoldbufptr_pos = 0; | |
1246 | linestart_pos = 0; | |
1247 | if (PL_parser->last_uni != PL_parser->bufend) | |
1248 | PL_parser->last_uni = NULL; | |
1249 | if (PL_parser->last_lop != PL_parser->bufend) | |
1250 | PL_parser->last_lop = NULL; | |
1251 | last_uni_pos = last_lop_pos = 0; | |
1252 | *buf = 0; | |
1253 | SvCUR(linestr) = 0; | |
1254 | } else { | |
1255 | old_bufend_pos = PL_parser->bufend - buf; | |
1256 | bufptr_pos = PL_parser->bufptr - buf; | |
1257 | oldbufptr_pos = PL_parser->oldbufptr - buf; | |
1258 | oldoldbufptr_pos = PL_parser->oldoldbufptr - buf; | |
1259 | linestart_pos = PL_parser->linestart - buf; | |
1260 | last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
1261 | last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
1262 | } | |
1263 | if (flags & LEX_FAKE_EOF) { | |
1264 | goto eof; | |
1265 | } else if (!PL_parser->rsfp) { | |
1266 | got_some = 0; | |
1267 | } else if (filter_gets(linestr, old_bufend_pos)) { | |
1268 | got_some = 1; | |
17cc9359 | 1269 | got_some_for_debugger = 1; |
f0e67a1d | 1270 | } else { |
580561a3 Z |
1271 | if (!SvPOK(linestr)) /* can get undefined by filter_gets */ |
1272 | sv_setpvs(linestr, ""); | |
f0e67a1d Z |
1273 | eof: |
1274 | /* End of real input. Close filehandle (unless it was STDIN), | |
1275 | * then add implicit termination. | |
1276 | */ | |
1277 | if ((PerlIO*)PL_parser->rsfp == PerlIO_stdin()) | |
1278 | PerlIO_clearerr(PL_parser->rsfp); | |
1279 | else if (PL_parser->rsfp) | |
1280 | (void)PerlIO_close(PL_parser->rsfp); | |
1281 | PL_parser->rsfp = NULL; | |
737c24fc | 1282 | PL_parser->in_pod = 0; |
f0e67a1d Z |
1283 | #ifdef PERL_MAD |
1284 | if (PL_madskills && !PL_in_eval && (PL_minus_p || PL_minus_n)) | |
1285 | PL_faketokens = 1; | |
1286 | #endif | |
1287 | if (!PL_in_eval && PL_minus_p) { | |
1288 | sv_catpvs(linestr, | |
1289 | /*{*/";}continue{print or die qq(-p destination: $!\\n);}"); | |
1290 | PL_minus_n = PL_minus_p = 0; | |
1291 | } else if (!PL_in_eval && PL_minus_n) { | |
1292 | sv_catpvs(linestr, /*{*/";}"); | |
1293 | PL_minus_n = 0; | |
1294 | } else | |
1295 | sv_catpvs(linestr, ";"); | |
1296 | got_some = 1; | |
1297 | } | |
1298 | buf = SvPVX(linestr); | |
1299 | new_bufend_pos = SvCUR(linestr); | |
1300 | PL_parser->bufend = buf + new_bufend_pos; | |
1301 | PL_parser->bufptr = buf + bufptr_pos; | |
1302 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
1303 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
1304 | PL_parser->linestart = buf + linestart_pos; | |
1305 | if (PL_parser->last_uni) | |
1306 | PL_parser->last_uni = buf + last_uni_pos; | |
1307 | if (PL_parser->last_lop) | |
1308 | PL_parser->last_lop = buf + last_lop_pos; | |
17cc9359 | 1309 | if (got_some_for_debugger && (PERLDB_LINE || PERLDB_SAVESRC) && |
f0e67a1d Z |
1310 | PL_curstash != PL_debstash) { |
1311 | /* debugger active and we're not compiling the debugger code, | |
1312 | * so store the line into the debugger's array of lines | |
1313 | */ | |
1314 | update_debugger_info(NULL, buf+old_bufend_pos, | |
1315 | new_bufend_pos-old_bufend_pos); | |
1316 | } | |
1317 | return got_some; | |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | =for apidoc Amx|I32|lex_peek_unichar|U32 flags | |
1322 | ||
1323 | Looks ahead one (Unicode) character in the text currently being lexed. | |
1324 | Returns the codepoint (unsigned integer value) of the next character, | |
1325 | or -1 if lexing has reached the end of the input text. To consume the | |
1326 | peeked character, use L</lex_read_unichar>. | |
1327 | ||
1328 | If the next character is in (or extends into) the next chunk of input | |
1329 | text, the next chunk will be read in. Normally the current chunk will be | |
1330 | discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> | |
1331 | then the current chunk will not be discarded. | |
1332 | ||
1333 | If the input is being interpreted as UTF-8 and a UTF-8 encoding error | |
1334 | is encountered, an exception is generated. | |
1335 | ||
1336 | =cut | |
1337 | */ | |
1338 | ||
1339 | I32 | |
1340 | Perl_lex_peek_unichar(pTHX_ U32 flags) | |
1341 | { | |
749123ff | 1342 | dVAR; |
f0e67a1d Z |
1343 | char *s, *bufend; |
1344 | if (flags & ~(LEX_KEEP_PREVIOUS)) | |
1345 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_peek_unichar"); | |
1346 | s = PL_parser->bufptr; | |
1347 | bufend = PL_parser->bufend; | |
1348 | if (UTF) { | |
1349 | U8 head; | |
1350 | I32 unichar; | |
1351 | STRLEN len, retlen; | |
1352 | if (s == bufend) { | |
1353 | if (!lex_next_chunk(flags)) | |
1354 | return -1; | |
1355 | s = PL_parser->bufptr; | |
1356 | bufend = PL_parser->bufend; | |
1357 | } | |
1358 | head = (U8)*s; | |
1359 | if (!(head & 0x80)) | |
1360 | return head; | |
1361 | if (head & 0x40) { | |
1362 | len = PL_utf8skip[head]; | |
1363 | while ((STRLEN)(bufend-s) < len) { | |
1364 | if (!lex_next_chunk(flags | LEX_KEEP_PREVIOUS)) | |
1365 | break; | |
1366 | s = PL_parser->bufptr; | |
1367 | bufend = PL_parser->bufend; | |
1368 | } | |
1369 | } | |
1370 | unichar = utf8n_to_uvuni((U8*)s, bufend-s, &retlen, UTF8_CHECK_ONLY); | |
1371 | if (retlen == (STRLEN)-1) { | |
1372 | /* malformed UTF-8 */ | |
1373 | ENTER; | |
1374 | SAVESPTR(PL_warnhook); | |
1375 | PL_warnhook = PERL_WARNHOOK_FATAL; | |
1376 | utf8n_to_uvuni((U8*)s, bufend-s, NULL, 0); | |
1377 | LEAVE; | |
1378 | } | |
1379 | return unichar; | |
1380 | } else { | |
1381 | if (s == bufend) { | |
1382 | if (!lex_next_chunk(flags)) | |
1383 | return -1; | |
1384 | s = PL_parser->bufptr; | |
1385 | } | |
1386 | return (U8)*s; | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | =for apidoc Amx|I32|lex_read_unichar|U32 flags | |
1392 | ||
1393 | Reads the next (Unicode) character in the text currently being lexed. | |
1394 | Returns the codepoint (unsigned integer value) of the character read, | |
1395 | and moves L</PL_parser-E<gt>bufptr> past the character, or returns -1 | |
1396 | if lexing has reached the end of the input text. To non-destructively | |
1397 | examine the next character, use L</lex_peek_unichar> instead. | |
1398 | ||
1399 | If the next character is in (or extends into) the next chunk of input | |
1400 | text, the next chunk will be read in. Normally the current chunk will be | |
1401 | discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> | |
1402 | then the current chunk will not be discarded. | |
1403 | ||
1404 | If the input is being interpreted as UTF-8 and a UTF-8 encoding error | |
1405 | is encountered, an exception is generated. | |
1406 | ||
1407 | =cut | |
1408 | */ | |
1409 | ||
1410 | I32 | |
1411 | Perl_lex_read_unichar(pTHX_ U32 flags) | |
1412 | { | |
1413 | I32 c; | |
1414 | if (flags & ~(LEX_KEEP_PREVIOUS)) | |
1415 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_unichar"); | |
1416 | c = lex_peek_unichar(flags); | |
1417 | if (c != -1) { | |
1418 | if (c == '\n') | |
1419 | CopLINE_inc(PL_curcop); | |
d9018cbe EB |
1420 | if (UTF) |
1421 | PL_parser->bufptr += UTF8SKIP(PL_parser->bufptr); | |
1422 | else | |
1423 | ++(PL_parser->bufptr); | |
f0e67a1d Z |
1424 | } |
1425 | return c; | |
1426 | } | |
1427 | ||
1428 | /* | |
1429 | =for apidoc Amx|void|lex_read_space|U32 flags | |
1430 | ||
1431 | Reads optional spaces, in Perl style, in the text currently being | |
1432 | lexed. The spaces may include ordinary whitespace characters and | |
1433 | Perl-style comments. C<#line> directives are processed if encountered. | |
1434 | L</PL_parser-E<gt>bufptr> is moved past the spaces, so that it points | |
1435 | at a non-space character (or the end of the input text). | |
1436 | ||
1437 | If spaces extend into the next chunk of input text, the next chunk will | |
1438 | be read in. Normally the current chunk will be discarded at the same | |
1439 | time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> then the current | |
1440 | chunk will not be discarded. | |
1441 | ||
1442 | =cut | |
1443 | */ | |
1444 | ||
f0998909 Z |
1445 | #define LEX_NO_NEXT_CHUNK 0x80000000 |
1446 | ||
f0e67a1d Z |
1447 | void |
1448 | Perl_lex_read_space(pTHX_ U32 flags) | |
1449 | { | |
1450 | char *s, *bufend; | |
1451 | bool need_incline = 0; | |
f0998909 | 1452 | if (flags & ~(LEX_KEEP_PREVIOUS|LEX_NO_NEXT_CHUNK)) |
f0e67a1d Z |
1453 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_space"); |
1454 | #ifdef PERL_MAD | |
1455 | if (PL_skipwhite) { | |
1456 | sv_free(PL_skipwhite); | |
1457 | PL_skipwhite = NULL; | |
1458 | } | |
1459 | if (PL_madskills) | |
1460 | PL_skipwhite = newSVpvs(""); | |
1461 | #endif /* PERL_MAD */ | |
1462 | s = PL_parser->bufptr; | |
1463 | bufend = PL_parser->bufend; | |
1464 | while (1) { | |
1465 | char c = *s; | |
1466 | if (c == '#') { | |
1467 | do { | |
1468 | c = *++s; | |
1469 | } while (!(c == '\n' || (c == 0 && s == bufend))); | |
1470 | } else if (c == '\n') { | |
1471 | s++; | |
1472 | PL_parser->linestart = s; | |
1473 | if (s == bufend) | |
1474 | need_incline = 1; | |
1475 | else | |
1476 | incline(s); | |
1477 | } else if (isSPACE(c)) { | |
1478 | s++; | |
1479 | } else if (c == 0 && s == bufend) { | |
1480 | bool got_more; | |
1481 | #ifdef PERL_MAD | |
1482 | if (PL_madskills) | |
1483 | sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr); | |
1484 | #endif /* PERL_MAD */ | |
f0998909 Z |
1485 | if (flags & LEX_NO_NEXT_CHUNK) |
1486 | break; | |
f0e67a1d Z |
1487 | PL_parser->bufptr = s; |
1488 | CopLINE_inc(PL_curcop); | |
1489 | got_more = lex_next_chunk(flags); | |
1490 | CopLINE_dec(PL_curcop); | |
1491 | s = PL_parser->bufptr; | |
1492 | bufend = PL_parser->bufend; | |
1493 | if (!got_more) | |
1494 | break; | |
1495 | if (need_incline && PL_parser->rsfp) { | |
1496 | incline(s); | |
1497 | need_incline = 0; | |
1498 | } | |
1499 | } else { | |
1500 | break; | |
1501 | } | |
1502 | } | |
1503 | #ifdef PERL_MAD | |
1504 | if (PL_madskills) | |
1505 | sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr); | |
1506 | #endif /* PERL_MAD */ | |
1507 | PL_parser->bufptr = s; | |
1508 | } | |
1509 | ||
1510 | /* | |
ffb4593c NT |
1511 | * S_incline |
1512 | * This subroutine has nothing to do with tilting, whether at windmills | |
1513 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 1514 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 1515 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
1516 | * # line 500 "foo.pm" |
1517 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
1518 | */ |
1519 | ||
76e3520e | 1520 | STATIC void |
d9095cec | 1521 | S_incline(pTHX_ const char *s) |
463ee0b2 | 1522 | { |
97aff369 | 1523 | dVAR; |
d9095cec NC |
1524 | const char *t; |
1525 | const char *n; | |
1526 | const char *e; | |
8818d409 | 1527 | line_t line_num; |
463ee0b2 | 1528 | |
7918f24d NC |
1529 | PERL_ARGS_ASSERT_INCLINE; |
1530 | ||
57843af0 | 1531 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
1532 | if (*s++ != '#') |
1533 | return; | |
d4c19fe8 AL |
1534 | while (SPACE_OR_TAB(*s)) |
1535 | s++; | |
73659bf1 GS |
1536 | if (strnEQ(s, "line", 4)) |
1537 | s += 4; | |
1538 | else | |
1539 | return; | |
084592ab | 1540 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 1541 | s++; |
4e553d73 | 1542 | else |
73659bf1 | 1543 | return; |
d4c19fe8 AL |
1544 | while (SPACE_OR_TAB(*s)) |
1545 | s++; | |
463ee0b2 LW |
1546 | if (!isDIGIT(*s)) |
1547 | return; | |
d4c19fe8 | 1548 | |
463ee0b2 LW |
1549 | n = s; |
1550 | while (isDIGIT(*s)) | |
1551 | s++; | |
07714eb4 | 1552 | if (!SPACE_OR_TAB(*s) && *s != '\r' && *s != '\n' && *s != '\0') |
26b6dc3f | 1553 | return; |
bf4acbe4 | 1554 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 1555 | s++; |
73659bf1 | 1556 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 1557 | s++; |
73659bf1 GS |
1558 | e = t + 1; |
1559 | } | |
463ee0b2 | 1560 | else { |
c35e046a AL |
1561 | t = s; |
1562 | while (!isSPACE(*t)) | |
1563 | t++; | |
73659bf1 | 1564 | e = t; |
463ee0b2 | 1565 | } |
bf4acbe4 | 1566 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
1567 | e++; |
1568 | if (*e != '\n' && *e != '\0') | |
1569 | return; /* false alarm */ | |
1570 | ||
8818d409 FC |
1571 | line_num = atoi(n)-1; |
1572 | ||
f4dd75d9 | 1573 | if (t - s > 0) { |
d9095cec | 1574 | const STRLEN len = t - s; |
19bad673 NC |
1575 | SV *const temp_sv = CopFILESV(PL_curcop); |
1576 | const char *cf; | |
1577 | STRLEN tmplen; | |
1578 | ||
1579 | if (temp_sv) { | |
1580 | cf = SvPVX(temp_sv); | |
1581 | tmplen = SvCUR(temp_sv); | |
1582 | } else { | |
1583 | cf = NULL; | |
1584 | tmplen = 0; | |
1585 | } | |
1586 | ||
42d9b98d | 1587 | if (tmplen > 7 && strnEQ(cf, "(eval ", 6)) { |
e66cf94c RGS |
1588 | /* must copy *{"::_<(eval N)[oldfilename:L]"} |
1589 | * to *{"::_<newfilename"} */ | |
44867030 NC |
1590 | /* However, the long form of evals is only turned on by the |
1591 | debugger - usually they're "(eval %lu)" */ | |
1592 | char smallbuf[128]; | |
1593 | char *tmpbuf; | |
1594 | GV **gvp; | |
d9095cec | 1595 | STRLEN tmplen2 = len; |
798b63bc | 1596 | if (tmplen + 2 <= sizeof smallbuf) |
e66cf94c RGS |
1597 | tmpbuf = smallbuf; |
1598 | else | |
2ae0db35 | 1599 | Newx(tmpbuf, tmplen + 2, char); |
44867030 NC |
1600 | tmpbuf[0] = '_'; |
1601 | tmpbuf[1] = '<'; | |
2ae0db35 | 1602 | memcpy(tmpbuf + 2, cf, tmplen); |
44867030 | 1603 | tmplen += 2; |
8a5ee598 RGS |
1604 | gvp = (GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, FALSE); |
1605 | if (gvp) { | |
44867030 NC |
1606 | char *tmpbuf2; |
1607 | GV *gv2; | |
1608 | ||
1609 | if (tmplen2 + 2 <= sizeof smallbuf) | |
1610 | tmpbuf2 = smallbuf; | |
1611 | else | |
1612 | Newx(tmpbuf2, tmplen2 + 2, char); | |
1613 | ||
1614 | if (tmpbuf2 != smallbuf || tmpbuf != smallbuf) { | |
1615 | /* Either they malloc'd it, or we malloc'd it, | |
1616 | so no prefix is present in ours. */ | |
1617 | tmpbuf2[0] = '_'; | |
1618 | tmpbuf2[1] = '<'; | |
1619 | } | |
1620 | ||
1621 | memcpy(tmpbuf2 + 2, s, tmplen2); | |
1622 | tmplen2 += 2; | |
1623 | ||
8a5ee598 | 1624 | gv2 = *(GV**)hv_fetch(PL_defstash, tmpbuf2, tmplen2, TRUE); |
e5527e4b | 1625 | if (!isGV(gv2)) { |
8a5ee598 | 1626 | gv_init(gv2, PL_defstash, tmpbuf2, tmplen2, FALSE); |
e5527e4b RGS |
1627 | /* adjust ${"::_<newfilename"} to store the new file name */ |
1628 | GvSV(gv2) = newSVpvn(tmpbuf2 + 2, tmplen2 - 2); | |
8818d409 FC |
1629 | /* The line number may differ. If that is the case, |
1630 | alias the saved lines that are in the array. | |
1631 | Otherwise alias the whole array. */ | |
1632 | if (CopLINE(PL_curcop) == line_num) { | |
1633 | GvHV(gv2) = MUTABLE_HV(SvREFCNT_inc(GvHV(*gvp))); | |
1634 | GvAV(gv2) = MUTABLE_AV(SvREFCNT_inc(GvAV(*gvp))); | |
1635 | } | |
1636 | else if (GvAV(*gvp)) { | |
1637 | AV * const av = GvAV(*gvp); | |
1638 | const I32 start = CopLINE(PL_curcop)+1; | |
1639 | I32 items = AvFILLp(av) - start; | |
1640 | if (items > 0) { | |
1641 | AV * const av2 = GvAVn(gv2); | |
1642 | SV **svp = AvARRAY(av) + start; | |
1643 | I32 l = (I32)line_num+1; | |
1644 | while (items--) | |
1645 | av_store(av2, l++, SvREFCNT_inc(*svp++)); | |
1646 | } | |
1647 | } | |
e5527e4b | 1648 | } |
44867030 NC |
1649 | |
1650 | if (tmpbuf2 != smallbuf) Safefree(tmpbuf2); | |
8a5ee598 | 1651 | } |
e66cf94c | 1652 | if (tmpbuf != smallbuf) Safefree(tmpbuf); |
e66cf94c | 1653 | } |
05ec9bb3 | 1654 | CopFILE_free(PL_curcop); |
d9095cec | 1655 | CopFILE_setn(PL_curcop, s, len); |
f4dd75d9 | 1656 | } |
8818d409 | 1657 | CopLINE_set(PL_curcop, line_num); |
463ee0b2 LW |
1658 | } |
1659 | ||
29595ff2 | 1660 | #ifdef PERL_MAD |
cd81e915 | 1661 | /* skip space before PL_thistoken */ |
29595ff2 NC |
1662 | |
1663 | STATIC char * | |
1664 | S_skipspace0(pTHX_ register char *s) | |
1665 | { | |
7918f24d NC |
1666 | PERL_ARGS_ASSERT_SKIPSPACE0; |
1667 | ||
29595ff2 NC |
1668 | s = skipspace(s); |
1669 | if (!PL_madskills) | |
1670 | return s; | |
cd81e915 NC |
1671 | if (PL_skipwhite) { |
1672 | if (!PL_thiswhite) | |
6b29d1f5 | 1673 | PL_thiswhite = newSVpvs(""); |
cd81e915 NC |
1674 | sv_catsv(PL_thiswhite, PL_skipwhite); |
1675 | sv_free(PL_skipwhite); | |
1676 | PL_skipwhite = 0; | |
1677 | } | |
1678 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
29595ff2 NC |
1679 | return s; |
1680 | } | |
1681 | ||
cd81e915 | 1682 | /* skip space after PL_thistoken */ |
29595ff2 NC |
1683 | |
1684 | STATIC char * | |
1685 | S_skipspace1(pTHX_ register char *s) | |
1686 | { | |
d4c19fe8 | 1687 | const char *start = s; |
29595ff2 NC |
1688 | I32 startoff = start - SvPVX(PL_linestr); |
1689 | ||
7918f24d NC |
1690 | PERL_ARGS_ASSERT_SKIPSPACE1; |
1691 | ||
29595ff2 NC |
1692 | s = skipspace(s); |
1693 | if (!PL_madskills) | |
1694 | return s; | |
1695 | start = SvPVX(PL_linestr) + startoff; | |
cd81e915 | 1696 | if (!PL_thistoken && PL_realtokenstart >= 0) { |
d4c19fe8 | 1697 | const char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 NC |
1698 | PL_thistoken = newSVpvn(tstart, start - tstart); |
1699 | } | |
1700 | PL_realtokenstart = -1; | |
1701 | if (PL_skipwhite) { | |
1702 | if (!PL_nextwhite) | |
6b29d1f5 | 1703 | PL_nextwhite = newSVpvs(""); |
cd81e915 NC |
1704 | sv_catsv(PL_nextwhite, PL_skipwhite); |
1705 | sv_free(PL_skipwhite); | |
1706 | PL_skipwhite = 0; | |
29595ff2 NC |
1707 | } |
1708 | return s; | |
1709 | } | |
1710 | ||
1711 | STATIC char * | |
1712 | S_skipspace2(pTHX_ register char *s, SV **svp) | |
1713 | { | |
c35e046a AL |
1714 | char *start; |
1715 | const I32 bufptroff = PL_bufptr - SvPVX(PL_linestr); | |
1716 | const I32 startoff = s - SvPVX(PL_linestr); | |
1717 | ||
7918f24d NC |
1718 | PERL_ARGS_ASSERT_SKIPSPACE2; |
1719 | ||
29595ff2 NC |
1720 | s = skipspace(s); |
1721 | PL_bufptr = SvPVX(PL_linestr) + bufptroff; | |
1722 | if (!PL_madskills || !svp) | |
1723 | return s; | |
1724 | start = SvPVX(PL_linestr) + startoff; | |
cd81e915 | 1725 | if (!PL_thistoken && PL_realtokenstart >= 0) { |
d4c19fe8 | 1726 | char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 NC |
1727 | PL_thistoken = newSVpvn(tstart, start - tstart); |
1728 | PL_realtokenstart = -1; | |
29595ff2 | 1729 | } |
cd81e915 | 1730 | if (PL_skipwhite) { |
29595ff2 | 1731 | if (!*svp) |
6b29d1f5 | 1732 | *svp = newSVpvs(""); |
cd81e915 NC |
1733 | sv_setsv(*svp, PL_skipwhite); |
1734 | sv_free(PL_skipwhite); | |
1735 | PL_skipwhite = 0; | |
29595ff2 NC |
1736 | } |
1737 | ||
1738 | return s; | |
1739 | } | |
1740 | #endif | |
1741 | ||
80a702cd | 1742 | STATIC void |
15f169a1 | 1743 | S_update_debugger_info(pTHX_ SV *orig_sv, const char *const buf, STRLEN len) |
80a702cd RGS |
1744 | { |
1745 | AV *av = CopFILEAVx(PL_curcop); | |
1746 | if (av) { | |
b9f83d2f | 1747 | SV * const sv = newSV_type(SVt_PVMG); |
5fa550fb NC |
1748 | if (orig_sv) |
1749 | sv_setsv(sv, orig_sv); | |
1750 | else | |
1751 | sv_setpvn(sv, buf, len); | |
80a702cd RGS |
1752 | (void)SvIOK_on(sv); |
1753 | SvIV_set(sv, 0); | |
1754 | av_store(av, (I32)CopLINE(PL_curcop), sv); | |
1755 | } | |
1756 | } | |
1757 | ||
ffb4593c NT |
1758 | /* |
1759 | * S_skipspace | |
1760 | * Called to gobble the appropriate amount and type of whitespace. | |
1761 | * Skips comments as well. | |
1762 | */ | |
1763 | ||
76e3520e | 1764 | STATIC char * |
cea2e8a9 | 1765 | S_skipspace(pTHX_ register char *s) |
a687059c | 1766 | { |
5db06880 | 1767 | #ifdef PERL_MAD |
f0e67a1d Z |
1768 | char *start = s; |
1769 | #endif /* PERL_MAD */ | |
7918f24d | 1770 | PERL_ARGS_ASSERT_SKIPSPACE; |
f0e67a1d | 1771 | #ifdef PERL_MAD |
cd81e915 NC |
1772 | if (PL_skipwhite) { |
1773 | sv_free(PL_skipwhite); | |
f0e67a1d | 1774 | PL_skipwhite = NULL; |
5db06880 | 1775 | } |
f0e67a1d | 1776 | #endif /* PERL_MAD */ |
3280af22 | 1777 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 1778 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 | 1779 | s++; |
f0e67a1d Z |
1780 | } else { |
1781 | STRLEN bufptr_pos = PL_bufptr - SvPVX(PL_linestr); | |
1782 | PL_bufptr = s; | |
f0998909 Z |
1783 | lex_read_space(LEX_KEEP_PREVIOUS | |
1784 | (PL_sublex_info.sub_inwhat || PL_lex_state == LEX_FORMLINE ? | |
1785 | LEX_NO_NEXT_CHUNK : 0)); | |
3280af22 | 1786 | s = PL_bufptr; |
f0e67a1d Z |
1787 | PL_bufptr = SvPVX(PL_linestr) + bufptr_pos; |
1788 | if (PL_linestart > PL_bufptr) | |
1789 | PL_bufptr = PL_linestart; | |
1790 | return s; | |
463ee0b2 | 1791 | } |
5db06880 | 1792 | #ifdef PERL_MAD |
f0e67a1d Z |
1793 | if (PL_madskills) |
1794 | PL_skipwhite = newSVpvn(start, s-start); | |
1795 | #endif /* PERL_MAD */ | |
5db06880 | 1796 | return s; |
a687059c | 1797 | } |
378cc40b | 1798 | |
ffb4593c NT |
1799 | /* |
1800 | * S_check_uni | |
1801 | * Check the unary operators to ensure there's no ambiguity in how they're | |
1802 | * used. An ambiguous piece of code would be: | |
1803 | * rand + 5 | |
1804 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
1805 | * the +5 is its argument. | |
1806 | */ | |
1807 | ||
76e3520e | 1808 | STATIC void |
cea2e8a9 | 1809 | S_check_uni(pTHX) |
ba106d47 | 1810 | { |
97aff369 | 1811 | dVAR; |
d4c19fe8 AL |
1812 | const char *s; |
1813 | const char *t; | |
2f3197b3 | 1814 | |
3280af22 | 1815 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 1816 | return; |
3280af22 NIS |
1817 | while (isSPACE(*PL_last_uni)) |
1818 | PL_last_uni++; | |
c35e046a AL |
1819 | s = PL_last_uni; |
1820 | while (isALNUM_lazy_if(s,UTF) || *s == '-') | |
1821 | s++; | |
3280af22 | 1822 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 1823 | return; |
6136c704 | 1824 | |
9b387841 NC |
1825 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), |
1826 | "Warning: Use of \"%.*s\" without parentheses is ambiguous", | |
1827 | (int)(s - PL_last_uni), PL_last_uni); | |
2f3197b3 LW |
1828 | } |
1829 | ||
ffb4593c NT |
1830 | /* |
1831 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
1832 | * with a subroutine, S_lop() for which LOP is just another name. | |
1833 | */ | |
1834 | ||
a0d0e21e LW |
1835 | #define LOP(f,x) return lop(f,x,s) |
1836 | ||
ffb4593c NT |
1837 | /* |
1838 | * S_lop | |
1839 | * Build a list operator (or something that might be one). The rules: | |
1840 | * - if we have a next token, then it's a list operator [why?] | |
1841 | * - if the next thing is an opening paren, then it's a function | |
1842 | * - else it's a list operator | |
1843 | */ | |
1844 | ||
76e3520e | 1845 | STATIC I32 |
a0be28da | 1846 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 1847 | { |
97aff369 | 1848 | dVAR; |
7918f24d NC |
1849 | |
1850 | PERL_ARGS_ASSERT_LOP; | |
1851 | ||
6154021b | 1852 | pl_yylval.ival = f; |
35c8bce7 | 1853 | CLINE; |
3280af22 NIS |
1854 | PL_expect = x; |
1855 | PL_bufptr = s; | |
1856 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 1857 | PL_last_lop_op = (OPCODE)f; |
5db06880 NC |
1858 | #ifdef PERL_MAD |
1859 | if (PL_lasttoke) | |
78cdf107 | 1860 | goto lstop; |
5db06880 | 1861 | #else |
3280af22 | 1862 | if (PL_nexttoke) |
78cdf107 | 1863 | goto lstop; |
5db06880 | 1864 | #endif |
79072805 | 1865 | if (*s == '(') |
bbf60fe6 | 1866 | return REPORT(FUNC); |
29595ff2 | 1867 | s = PEEKSPACE(s); |
79072805 | 1868 | if (*s == '(') |
bbf60fe6 | 1869 | return REPORT(FUNC); |
78cdf107 Z |
1870 | else { |
1871 | lstop: | |
1872 | if (!PL_lex_allbrackets && PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
1873 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 1874 | return REPORT(LSTOP); |
78cdf107 | 1875 | } |
79072805 LW |
1876 | } |
1877 | ||
5db06880 NC |
1878 | #ifdef PERL_MAD |
1879 | /* | |
1880 | * S_start_force | |
1881 | * Sets up for an eventual force_next(). start_force(0) basically does | |
1882 | * an unshift, while start_force(-1) does a push. yylex removes items | |
1883 | * on the "pop" end. | |
1884 | */ | |
1885 | ||
1886 | STATIC void | |
1887 | S_start_force(pTHX_ int where) | |
1888 | { | |
1889 | int i; | |
1890 | ||
cd81e915 | 1891 | if (where < 0) /* so people can duplicate start_force(PL_curforce) */ |
5db06880 | 1892 | where = PL_lasttoke; |
cd81e915 NC |
1893 | assert(PL_curforce < 0 || PL_curforce == where); |
1894 | if (PL_curforce != where) { | |
5db06880 NC |
1895 | for (i = PL_lasttoke; i > where; --i) { |
1896 | PL_nexttoke[i] = PL_nexttoke[i-1]; | |
1897 | } | |
1898 | PL_lasttoke++; | |
1899 | } | |
cd81e915 | 1900 | if (PL_curforce < 0) /* in case of duplicate start_force() */ |
5db06880 | 1901 | Zero(&PL_nexttoke[where], 1, NEXTTOKE); |
cd81e915 NC |
1902 | PL_curforce = where; |
1903 | if (PL_nextwhite) { | |
5db06880 | 1904 | if (PL_madskills) |
6b29d1f5 | 1905 | curmad('^', newSVpvs("")); |
cd81e915 | 1906 | CURMAD('_', PL_nextwhite); |
5db06880 NC |
1907 | } |
1908 | } | |
1909 | ||
1910 | STATIC void | |
1911 | S_curmad(pTHX_ char slot, SV *sv) | |
1912 | { | |
1913 | MADPROP **where; | |
1914 | ||
1915 | if (!sv) | |
1916 | return; | |
cd81e915 NC |
1917 | if (PL_curforce < 0) |
1918 | where = &PL_thismad; | |
5db06880 | 1919 | else |
cd81e915 | 1920 | where = &PL_nexttoke[PL_curforce].next_mad; |
5db06880 | 1921 | |
cd81e915 | 1922 | if (PL_faketokens) |
76f68e9b | 1923 | sv_setpvs(sv, ""); |
5db06880 NC |
1924 | else { |
1925 | if (!IN_BYTES) { | |
1926 | if (UTF && is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
1927 | SvUTF8_on(sv); | |
1928 | else if (PL_encoding) { | |
1929 | sv_recode_to_utf8(sv, PL_encoding); | |
1930 | } | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | /* keep a slot open for the head of the list? */ | |
1935 | if (slot != '_' && *where && (*where)->mad_key == '^') { | |
1936 | (*where)->mad_key = slot; | |
daba3364 | 1937 | sv_free(MUTABLE_SV(((*where)->mad_val))); |
5db06880 NC |
1938 | (*where)->mad_val = (void*)sv; |
1939 | } | |
1940 | else | |
1941 | addmad(newMADsv(slot, sv), where, 0); | |
1942 | } | |
1943 | #else | |
b3f24c00 MHM |
1944 | # define start_force(where) NOOP |
1945 | # define curmad(slot, sv) NOOP | |
5db06880 NC |
1946 | #endif |
1947 | ||
ffb4593c NT |
1948 | /* |
1949 | * S_force_next | |
9cbb5ea2 | 1950 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 1951 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 | 1952 | * to know what token to return the next time the lexer is called. Caller |
5db06880 NC |
1953 | * will need to set PL_nextval[] (or PL_nexttoke[].next_val with PERL_MAD), |
1954 | * and possibly PL_expect to ensure the lexer handles the token correctly. | |
ffb4593c NT |
1955 | */ |
1956 | ||
4e553d73 | 1957 | STATIC void |
cea2e8a9 | 1958 | S_force_next(pTHX_ I32 type) |
79072805 | 1959 | { |
97aff369 | 1960 | dVAR; |
704d4215 GG |
1961 | #ifdef DEBUGGING |
1962 | if (DEBUG_T_TEST) { | |
1963 | PerlIO_printf(Perl_debug_log, "### forced token:\n"); | |
f05d7009 | 1964 | tokereport(type, &NEXTVAL_NEXTTOKE); |
704d4215 GG |
1965 | } |
1966 | #endif | |
5db06880 | 1967 | #ifdef PERL_MAD |
cd81e915 | 1968 | if (PL_curforce < 0) |
5db06880 | 1969 | start_force(PL_lasttoke); |
cd81e915 | 1970 | PL_nexttoke[PL_curforce].next_type = type; |
5db06880 NC |
1971 | if (PL_lex_state != LEX_KNOWNEXT) |
1972 | PL_lex_defer = PL_lex_state; | |
1973 | PL_lex_state = LEX_KNOWNEXT; | |
1974 | PL_lex_expect = PL_expect; | |
cd81e915 | 1975 | PL_curforce = -1; |
5db06880 | 1976 | #else |
3280af22 NIS |
1977 | PL_nexttype[PL_nexttoke] = type; |
1978 | PL_nexttoke++; | |
1979 | if (PL_lex_state != LEX_KNOWNEXT) { | |
1980 | PL_lex_defer = PL_lex_state; | |
1981 | PL_lex_expect = PL_expect; | |
1982 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 | 1983 | } |
5db06880 | 1984 | #endif |
79072805 LW |
1985 | } |
1986 | ||
28ac2b49 Z |
1987 | void |
1988 | Perl_yyunlex(pTHX) | |
1989 | { | |
a7aaec61 Z |
1990 | int yyc = PL_parser->yychar; |
1991 | if (yyc != YYEMPTY) { | |
1992 | if (yyc) { | |
1993 | start_force(-1); | |
1994 | NEXTVAL_NEXTTOKE = PL_parser->yylval; | |
1995 | if (yyc == '{'/*}*/ || yyc == HASHBRACK || yyc == '['/*]*/) { | |
78cdf107 | 1996 | PL_lex_allbrackets--; |
a7aaec61 | 1997 | PL_lex_brackets--; |
78cdf107 Z |
1998 | yyc |= (3<<24) | (PL_lex_brackstack[PL_lex_brackets] << 16); |
1999 | } else if (yyc == '('/*)*/) { | |
2000 | PL_lex_allbrackets--; | |
2001 | yyc |= (2<<24); | |
a7aaec61 Z |
2002 | } |
2003 | force_next(yyc); | |
2004 | } | |
28ac2b49 Z |
2005 | PL_parser->yychar = YYEMPTY; |
2006 | } | |
2007 | } | |
2008 | ||
d0a148a6 | 2009 | STATIC SV * |
15f169a1 | 2010 | S_newSV_maybe_utf8(pTHX_ const char *const start, STRLEN len) |
d0a148a6 | 2011 | { |
97aff369 | 2012 | dVAR; |
740cce10 | 2013 | SV * const sv = newSVpvn_utf8(start, len, |
eaf7a4d2 CS |
2014 | !IN_BYTES |
2015 | && UTF | |
2016 | && !is_ascii_string((const U8*)start, len) | |
740cce10 | 2017 | && is_utf8_string((const U8*)start, len)); |
d0a148a6 NC |
2018 | return sv; |
2019 | } | |
2020 | ||
ffb4593c NT |
2021 | /* |
2022 | * S_force_word | |
2023 | * When the lexer knows the next thing is a word (for instance, it has | |
2024 | * just seen -> and it knows that the next char is a word char, then | |
02b34bbe DM |
2025 | * it calls S_force_word to stick the next word into the PL_nexttoke/val |
2026 | * lookahead. | |
ffb4593c NT |
2027 | * |
2028 | * Arguments: | |
b1b65b59 | 2029 | * char *start : buffer position (must be within PL_linestr) |
02b34bbe | 2030 | * int token : PL_next* will be this type of bare word (e.g., METHOD,WORD) |
ffb4593c NT |
2031 | * int check_keyword : if true, Perl checks to make sure the word isn't |
2032 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
2033 | * int allow_pack : if true, : characters will also be allowed (require, | |
2034 | * use, etc. do this) | |
9cbb5ea2 | 2035 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
2036 | */ |
2037 | ||
76e3520e | 2038 | STATIC char * |
cea2e8a9 | 2039 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 2040 | { |
97aff369 | 2041 | dVAR; |
463ee0b2 LW |
2042 | register char *s; |
2043 | STRLEN len; | |
4e553d73 | 2044 | |
7918f24d NC |
2045 | PERL_ARGS_ASSERT_FORCE_WORD; |
2046 | ||
29595ff2 | 2047 | start = SKIPSPACE1(start); |
463ee0b2 | 2048 | s = start; |
7e2040f0 | 2049 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 2050 | (allow_pack && *s == ':') || |
15f0808c | 2051 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 2052 | { |
3280af22 | 2053 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
5458a98a | 2054 | if (check_keyword && keyword(PL_tokenbuf, len, 0)) |
463ee0b2 | 2055 | return start; |
cd81e915 | 2056 | start_force(PL_curforce); |
5db06880 NC |
2057 | if (PL_madskills) |
2058 | curmad('X', newSVpvn(start,s-start)); | |
463ee0b2 | 2059 | if (token == METHOD) { |
29595ff2 | 2060 | s = SKIPSPACE1(s); |
463ee0b2 | 2061 | if (*s == '(') |
3280af22 | 2062 | PL_expect = XTERM; |
463ee0b2 | 2063 | else { |
3280af22 | 2064 | PL_expect = XOPERATOR; |
463ee0b2 | 2065 | } |
79072805 | 2066 | } |
e74e6b3d | 2067 | if (PL_madskills) |
63575281 | 2068 | curmad('g', newSVpvs( "forced" )); |
9ded7720 | 2069 | NEXTVAL_NEXTTOKE.opval |
d0a148a6 NC |
2070 | = (OP*)newSVOP(OP_CONST,0, |
2071 | S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, len)); | |
9ded7720 | 2072 | NEXTVAL_NEXTTOKE.opval->op_private |= OPpCONST_BARE; |
79072805 LW |
2073 | force_next(token); |
2074 | } | |
2075 | return s; | |
2076 | } | |
2077 | ||
ffb4593c NT |
2078 | /* |
2079 | * S_force_ident | |
9cbb5ea2 | 2080 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
2081 | * text only contains the "foo" portion. The first argument is a pointer |
2082 | * to the "foo", and the second argument is the type symbol to prefix. | |
2083 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 2084 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
2085 | */ |
2086 | ||
76e3520e | 2087 | STATIC void |
bfed75c6 | 2088 | S_force_ident(pTHX_ register const char *s, int kind) |
79072805 | 2089 | { |
97aff369 | 2090 | dVAR; |
7918f24d NC |
2091 | |
2092 | PERL_ARGS_ASSERT_FORCE_IDENT; | |
2093 | ||
c35e046a | 2094 | if (*s) { |
90e5519e NC |
2095 | const STRLEN len = strlen(s); |
2096 | OP* const o = (OP*)newSVOP(OP_CONST, 0, newSVpvn(s, len)); | |
cd81e915 | 2097 | start_force(PL_curforce); |
9ded7720 | 2098 | NEXTVAL_NEXTTOKE.opval = o; |
79072805 | 2099 | force_next(WORD); |
748a9306 | 2100 | if (kind) { |
11343788 | 2101 | o->op_private = OPpCONST_ENTERED; |
55497cff | 2102 | /* XXX see note in pp_entereval() for why we forgo typo |
2103 | warnings if the symbol must be introduced in an eval. | |
2104 | GSAR 96-10-12 */ | |
90e5519e NC |
2105 | gv_fetchpvn_flags(s, len, |
2106 | PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) | |
2107 | : GV_ADD, | |
2108 | kind == '$' ? SVt_PV : | |
2109 | kind == '@' ? SVt_PVAV : | |
2110 | kind == '%' ? SVt_PVHV : | |
a0d0e21e | 2111 | SVt_PVGV |
90e5519e | 2112 | ); |
748a9306 | 2113 | } |
79072805 LW |
2114 | } |
2115 | } | |
2116 | ||
1571675a GS |
2117 | NV |
2118 | Perl_str_to_version(pTHX_ SV *sv) | |
2119 | { | |
2120 | NV retval = 0.0; | |
2121 | NV nshift = 1.0; | |
2122 | STRLEN len; | |
cfd0369c | 2123 | const char *start = SvPV_const(sv,len); |
9d4ba2ae | 2124 | const char * const end = start + len; |
504618e9 | 2125 | const bool utf = SvUTF8(sv) ? TRUE : FALSE; |
7918f24d NC |
2126 | |
2127 | PERL_ARGS_ASSERT_STR_TO_VERSION; | |
2128 | ||
1571675a | 2129 | while (start < end) { |
ba210ebe | 2130 | STRLEN skip; |
1571675a GS |
2131 | UV n; |
2132 | if (utf) | |
9041c2e3 | 2133 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
2134 | else { |
2135 | n = *(U8*)start; | |
2136 | skip = 1; | |
2137 | } | |
2138 | retval += ((NV)n)/nshift; | |
2139 | start += skip; | |
2140 | nshift *= 1000; | |
2141 | } | |
2142 | return retval; | |
2143 | } | |
2144 | ||
4e553d73 | 2145 | /* |
ffb4593c NT |
2146 | * S_force_version |
2147 | * Forces the next token to be a version number. | |
e759cc13 RGS |
2148 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
2149 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
2150 | * must use an alternative parsing method). | |
ffb4593c NT |
2151 | */ |
2152 | ||
76e3520e | 2153 | STATIC char * |
e759cc13 | 2154 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 2155 | { |
97aff369 | 2156 | dVAR; |
5f66b61c | 2157 | OP *version = NULL; |
44dcb63b | 2158 | char *d; |
5db06880 NC |
2159 | #ifdef PERL_MAD |
2160 | I32 startoff = s - SvPVX(PL_linestr); | |
2161 | #endif | |
89bfa8cd | 2162 | |
7918f24d NC |
2163 | PERL_ARGS_ASSERT_FORCE_VERSION; |
2164 | ||
29595ff2 | 2165 | s = SKIPSPACE1(s); |
89bfa8cd | 2166 | |
44dcb63b | 2167 | d = s; |
dd629d5b | 2168 | if (*d == 'v') |
44dcb63b | 2169 | d++; |
44dcb63b | 2170 | if (isDIGIT(*d)) { |
e759cc13 RGS |
2171 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
2172 | d++; | |
5db06880 NC |
2173 | #ifdef PERL_MAD |
2174 | if (PL_madskills) { | |
cd81e915 | 2175 | start_force(PL_curforce); |
5db06880 NC |
2176 | curmad('X', newSVpvn(s,d-s)); |
2177 | } | |
2178 | #endif | |
4e4da3ac | 2179 | if (*d == ';' || isSPACE(*d) || *d == '{' || *d == '}' || !*d) { |
dd629d5b | 2180 | SV *ver; |
8d08d9ba DG |
2181 | #ifdef USE_LOCALE_NUMERIC |
2182 | char *loc = setlocale(LC_NUMERIC, "C"); | |
2183 | #endif | |
6154021b | 2184 | s = scan_num(s, &pl_yylval); |
8d08d9ba DG |
2185 | #ifdef USE_LOCALE_NUMERIC |
2186 | setlocale(LC_NUMERIC, loc); | |
2187 | #endif | |
6154021b | 2188 | version = pl_yylval.opval; |
dd629d5b GS |
2189 | ver = cSVOPx(version)->op_sv; |
2190 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
862a34c6 | 2191 | SvUPGRADE(ver, SVt_PVNV); |
9d6ce603 | 2192 | SvNV_set(ver, str_to_version(ver)); |
1571675a | 2193 | SvNOK_on(ver); /* hint that it is a version */ |
44dcb63b | 2194 | } |
89bfa8cd | 2195 | } |
5db06880 NC |
2196 | else if (guessing) { |
2197 | #ifdef PERL_MAD | |
2198 | if (PL_madskills) { | |
cd81e915 NC |
2199 | sv_free(PL_nextwhite); /* let next token collect whitespace */ |
2200 | PL_nextwhite = 0; | |
5db06880 NC |
2201 | s = SvPVX(PL_linestr) + startoff; |
2202 | } | |
2203 | #endif | |
e759cc13 | 2204 | return s; |
5db06880 | 2205 | } |
89bfa8cd | 2206 | } |
2207 | ||
5db06880 NC |
2208 | #ifdef PERL_MAD |
2209 | if (PL_madskills && !version) { | |
cd81e915 NC |
2210 | sv_free(PL_nextwhite); /* let next token collect whitespace */ |
2211 | PL_nextwhite = 0; | |
5db06880 NC |
2212 | s = SvPVX(PL_linestr) + startoff; |
2213 | } | |
2214 | #endif | |
89bfa8cd | 2215 | /* NOTE: The parser sees the package name and the VERSION swapped */ |
cd81e915 | 2216 | start_force(PL_curforce); |
9ded7720 | 2217 | NEXTVAL_NEXTTOKE.opval = version; |
4e553d73 | 2218 | force_next(WORD); |
89bfa8cd | 2219 | |
e759cc13 | 2220 | return s; |
89bfa8cd | 2221 | } |
2222 | ||
ffb4593c | 2223 | /* |
91152fc1 DG |
2224 | * S_force_strict_version |
2225 | * Forces the next token to be a version number using strict syntax rules. | |
2226 | */ | |
2227 | ||
2228 | STATIC char * | |
2229 | S_force_strict_version(pTHX_ char *s) | |
2230 | { | |
2231 | dVAR; | |
2232 | OP *version = NULL; | |
2233 | #ifdef PERL_MAD | |
2234 | I32 startoff = s - SvPVX(PL_linestr); | |
2235 | #endif | |
2236 | const char *errstr = NULL; | |
2237 | ||
2238 | PERL_ARGS_ASSERT_FORCE_STRICT_VERSION; | |
2239 | ||
2240 | while (isSPACE(*s)) /* leading whitespace */ | |
2241 | s++; | |
2242 | ||
2243 | if (is_STRICT_VERSION(s,&errstr)) { | |
2244 | SV *ver = newSV(0); | |
2245 | s = (char *)scan_version(s, ver, 0); | |
2246 | version = newSVOP(OP_CONST, 0, ver); | |
2247 | } | |
4e4da3ac Z |
2248 | else if ( (*s != ';' && *s != '{' && *s != '}' ) && |
2249 | (s = SKIPSPACE1(s), (*s != ';' && *s != '{' && *s != '}' ))) | |
2250 | { | |
91152fc1 DG |
2251 | PL_bufptr = s; |
2252 | if (errstr) | |
2253 | yyerror(errstr); /* version required */ | |
2254 | return s; | |
2255 | } | |
2256 | ||
2257 | #ifdef PERL_MAD | |
2258 | if (PL_madskills && !version) { | |
2259 | sv_free(PL_nextwhite); /* let next token collect whitespace */ | |
2260 | PL_nextwhite = 0; | |
2261 | s = SvPVX(PL_linestr) + startoff; | |
2262 | } | |
2263 | #endif | |
2264 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
2265 | start_force(PL_curforce); | |
2266 | NEXTVAL_NEXTTOKE.opval = version; | |
2267 | force_next(WORD); | |
2268 | ||
2269 | return s; | |
2270 | } | |
2271 | ||
2272 | /* | |
ffb4593c NT |
2273 | * S_tokeq |
2274 | * Tokenize a quoted string passed in as an SV. It finds the next | |
2275 | * chunk, up to end of string or a backslash. It may make a new | |
2276 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
2277 | * turns \\ into \. | |
2278 | */ | |
2279 | ||
76e3520e | 2280 | STATIC SV * |
cea2e8a9 | 2281 | S_tokeq(pTHX_ SV *sv) |
79072805 | 2282 | { |
97aff369 | 2283 | dVAR; |
79072805 LW |
2284 | register char *s; |
2285 | register char *send; | |
2286 | register char *d; | |
b3ac6de7 IZ |
2287 | STRLEN len = 0; |
2288 | SV *pv = sv; | |
79072805 | 2289 | |
7918f24d NC |
2290 | PERL_ARGS_ASSERT_TOKEQ; |
2291 | ||
79072805 | 2292 | if (!SvLEN(sv)) |
b3ac6de7 | 2293 | goto finish; |
79072805 | 2294 | |
a0d0e21e | 2295 | s = SvPV_force(sv, len); |
21a311ee | 2296 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 2297 | goto finish; |
463ee0b2 | 2298 | send = s + len; |
dcb21ed6 NC |
2299 | /* This is relying on the SV being "well formed" with a trailing '\0' */ |
2300 | while (s < send && !(*s == '\\' && s[1] == '\\')) | |
79072805 LW |
2301 | s++; |
2302 | if (s == send) | |
b3ac6de7 | 2303 | goto finish; |
79072805 | 2304 | d = s; |
be4731d2 | 2305 | if ( PL_hints & HINT_NEW_STRING ) { |
59cd0e26 | 2306 | pv = newSVpvn_flags(SvPVX_const(pv), len, SVs_TEMP | SvUTF8(sv)); |
be4731d2 | 2307 | } |
79072805 LW |
2308 | while (s < send) { |
2309 | if (*s == '\\') { | |
a0d0e21e | 2310 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
2311 | s++; /* all that, just for this */ |
2312 | } | |
2313 | *d++ = *s++; | |
2314 | } | |
2315 | *d = '\0'; | |
95a20fc0 | 2316 | SvCUR_set(sv, d - SvPVX_const(sv)); |
b3ac6de7 | 2317 | finish: |
3280af22 | 2318 | if ( PL_hints & HINT_NEW_STRING ) |
eb0d8d16 | 2319 | return new_constant(NULL, 0, "q", sv, pv, "q", 1); |
79072805 LW |
2320 | return sv; |
2321 | } | |
2322 | ||
ffb4593c NT |
2323 | /* |
2324 | * Now come three functions related to double-quote context, | |
2325 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
2326 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
2327 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
2328 | * to handle functions and concatenation. | |
2329 | * They assume that whoever calls them will be setting up a fake | |
2330 | * join call, because each subthing puts a ',' after it. This lets | |
2331 | * "lower \luPpEr" | |
2332 | * become | |
2333 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
2334 | * | |
2335 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
2336 | * arguments and join's arguments are created or not). | |
2337 | */ | |
2338 | ||
2339 | /* | |
2340 | * S_sublex_start | |
6154021b | 2341 | * Assumes that pl_yylval.ival is the op we're creating (e.g. OP_LCFIRST). |
ffb4593c NT |
2342 | * |
2343 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
6154021b | 2344 | * make (we return THING if pl_yylval.ival is OP_NULL, PMFUNC otherwise). |
ffb4593c NT |
2345 | * |
2346 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
2347 | * | |
2348 | * Everything else becomes a FUNC. | |
2349 | * | |
2350 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
2351 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
2352 | * call to S_sublex_push(). | |
2353 | */ | |
2354 | ||
76e3520e | 2355 | STATIC I32 |
cea2e8a9 | 2356 | S_sublex_start(pTHX) |
79072805 | 2357 | { |
97aff369 | 2358 | dVAR; |
6154021b | 2359 | register const I32 op_type = pl_yylval.ival; |
79072805 LW |
2360 | |
2361 | if (op_type == OP_NULL) { | |
6154021b | 2362 | pl_yylval.opval = PL_lex_op; |
5f66b61c | 2363 | PL_lex_op = NULL; |
79072805 LW |
2364 | return THING; |
2365 | } | |
2366 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 2367 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
2368 | |
2369 | if (SvTYPE(sv) == SVt_PVIV) { | |
2370 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
2371 | STRLEN len; | |
96a5add6 | 2372 | const char * const p = SvPV_const(sv, len); |
740cce10 | 2373 | SV * const nsv = newSVpvn_flags(p, len, SvUTF8(sv)); |
b3ac6de7 IZ |
2374 | SvREFCNT_dec(sv); |
2375 | sv = nsv; | |
4e553d73 | 2376 | } |
6154021b | 2377 | pl_yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
a0714e2c | 2378 | PL_lex_stuff = NULL; |
6f33ba73 RGS |
2379 | /* Allow <FH> // "foo" */ |
2380 | if (op_type == OP_READLINE) | |
2381 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
2382 | return THING; |
2383 | } | |
e3f73d4e RGS |
2384 | else if (op_type == OP_BACKTICK && PL_lex_op) { |
2385 | /* readpipe() vas overriden */ | |
2386 | cSVOPx(cLISTOPx(cUNOPx(PL_lex_op)->op_first)->op_first->op_sibling)->op_sv = tokeq(PL_lex_stuff); | |
6154021b | 2387 | pl_yylval.opval = PL_lex_op; |
9b201d7d | 2388 | PL_lex_op = NULL; |
e3f73d4e RGS |
2389 | PL_lex_stuff = NULL; |
2390 | return THING; | |
2391 | } | |
79072805 | 2392 | |
3280af22 | 2393 | PL_sublex_info.super_state = PL_lex_state; |
eac04b2e | 2394 | PL_sublex_info.sub_inwhat = (U16)op_type; |
3280af22 NIS |
2395 | PL_sublex_info.sub_op = PL_lex_op; |
2396 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 2397 | |
3280af22 NIS |
2398 | PL_expect = XTERM; |
2399 | if (PL_lex_op) { | |
6154021b | 2400 | pl_yylval.opval = PL_lex_op; |
5f66b61c | 2401 | PL_lex_op = NULL; |
55497cff | 2402 | return PMFUNC; |
2403 | } | |
2404 | else | |
2405 | return FUNC; | |
2406 | } | |
2407 | ||
ffb4593c NT |
2408 | /* |
2409 | * S_sublex_push | |
2410 | * Create a new scope to save the lexing state. The scope will be | |
2411 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
2412 | * to the uc, lc, etc. found before. | |
2413 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
2414 | */ | |
2415 | ||
76e3520e | 2416 | STATIC I32 |
cea2e8a9 | 2417 | S_sublex_push(pTHX) |
55497cff | 2418 | { |
27da23d5 | 2419 | dVAR; |
f46d017c | 2420 | ENTER; |
55497cff | 2421 | |
3280af22 | 2422 | PL_lex_state = PL_sublex_info.super_state; |
651b5b28 | 2423 | SAVEBOOL(PL_lex_dojoin); |
3280af22 | 2424 | SAVEI32(PL_lex_brackets); |
78cdf107 Z |
2425 | SAVEI32(PL_lex_allbrackets); |
2426 | SAVEI8(PL_lex_fakeeof); | |
3280af22 NIS |
2427 | SAVEI32(PL_lex_casemods); |
2428 | SAVEI32(PL_lex_starts); | |
651b5b28 | 2429 | SAVEI8(PL_lex_state); |
7766f137 | 2430 | SAVEVPTR(PL_lex_inpat); |
98246f1e | 2431 | SAVEI16(PL_lex_inwhat); |
57843af0 | 2432 | SAVECOPLINE(PL_curcop); |
3280af22 | 2433 | SAVEPPTR(PL_bufptr); |
8452ff4b | 2434 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
2435 | SAVEPPTR(PL_oldbufptr); |
2436 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
2437 | SAVEPPTR(PL_last_lop); |
2438 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
2439 | SAVEPPTR(PL_linestart); |
2440 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
2441 | SAVEGENERICPV(PL_lex_brackstack); |
2442 | SAVEGENERICPV(PL_lex_casestack); | |
3280af22 NIS |
2443 | |
2444 | PL_linestr = PL_lex_stuff; | |
a0714e2c | 2445 | PL_lex_stuff = NULL; |
3280af22 | 2446 | |
9cbb5ea2 GS |
2447 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
2448 | = SvPVX(PL_linestr); | |
3280af22 | 2449 | PL_bufend += SvCUR(PL_linestr); |
bd61b366 | 2450 | PL_last_lop = PL_last_uni = NULL; |
3280af22 NIS |
2451 | SAVEFREESV(PL_linestr); |
2452 | ||
2453 | PL_lex_dojoin = FALSE; | |
2454 | PL_lex_brackets = 0; | |
78cdf107 Z |
2455 | PL_lex_allbrackets = 0; |
2456 | PL_lex_fakeeof = LEX_FAKEEOF_NEVER; | |
a02a5408 JC |
2457 | Newx(PL_lex_brackstack, 120, char); |
2458 | Newx(PL_lex_casestack, 12, char); | |
3280af22 NIS |
2459 | PL_lex_casemods = 0; |
2460 | *PL_lex_casestack = '\0'; | |
2461 | PL_lex_starts = 0; | |
2462 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 2463 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 NIS |
2464 | |
2465 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
bb16bae8 | 2466 | if (PL_lex_inwhat == OP_TRANSR) PL_lex_inwhat = OP_TRANS; |
3280af22 NIS |
2467 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) |
2468 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 2469 | else |
5f66b61c | 2470 | PL_lex_inpat = NULL; |
79072805 | 2471 | |
55497cff | 2472 | return '('; |
79072805 LW |
2473 | } |
2474 | ||
ffb4593c NT |
2475 | /* |
2476 | * S_sublex_done | |
2477 | * Restores lexer state after a S_sublex_push. | |
2478 | */ | |
2479 | ||
76e3520e | 2480 | STATIC I32 |
cea2e8a9 | 2481 | S_sublex_done(pTHX) |
79072805 | 2482 | { |
27da23d5 | 2483 | dVAR; |
3280af22 | 2484 | if (!PL_lex_starts++) { |
396482e1 | 2485 | SV * const sv = newSVpvs(""); |
9aa983d2 JH |
2486 | if (SvUTF8(PL_linestr)) |
2487 | SvUTF8_on(sv); | |
3280af22 | 2488 | PL_expect = XOPERATOR; |
6154021b | 2489 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
2490 | return THING; |
2491 | } | |
2492 | ||
3280af22 NIS |
2493 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
2494 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 2495 | return yylex(); |
79072805 LW |
2496 | } |
2497 | ||
ffb4593c | 2498 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
bb16bae8 | 2499 | assert(PL_lex_inwhat != OP_TRANSR); |
3280af22 NIS |
2500 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
2501 | PL_linestr = PL_lex_repl; | |
2502 | PL_lex_inpat = 0; | |
2503 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
2504 | PL_bufend += SvCUR(PL_linestr); | |
bd61b366 | 2505 | PL_last_lop = PL_last_uni = NULL; |
3280af22 NIS |
2506 | SAVEFREESV(PL_linestr); |
2507 | PL_lex_dojoin = FALSE; | |
2508 | PL_lex_brackets = 0; | |
78cdf107 Z |
2509 | PL_lex_allbrackets = 0; |
2510 | PL_lex_fakeeof = LEX_FAKEEOF_NEVER; | |
3280af22 NIS |
2511 | PL_lex_casemods = 0; |
2512 | *PL_lex_casestack = '\0'; | |
2513 | PL_lex_starts = 0; | |
25da4f38 | 2514 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
2515 | PL_lex_state = LEX_INTERPNORMAL; |
2516 | PL_lex_starts++; | |
e9fa98b2 HS |
2517 | /* we don't clear PL_lex_repl here, so that we can check later |
2518 | whether this is an evalled subst; that means we rely on the | |
2519 | logic to ensure sublex_done() is called again only via the | |
2520 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 2521 | } |
e9fa98b2 | 2522 | else { |
3280af22 | 2523 | PL_lex_state = LEX_INTERPCONCAT; |
a0714e2c | 2524 | PL_lex_repl = NULL; |
e9fa98b2 | 2525 | } |
79072805 | 2526 | return ','; |
ffed7fef LW |
2527 | } |
2528 | else { | |
5db06880 NC |
2529 | #ifdef PERL_MAD |
2530 | if (PL_madskills) { | |
cd81e915 NC |
2531 | if (PL_thiswhite) { |
2532 | if (!PL_endwhite) | |
6b29d1f5 | 2533 | PL_endwhite = newSVpvs(""); |
cd81e915 NC |
2534 | sv_catsv(PL_endwhite, PL_thiswhite); |
2535 | PL_thiswhite = 0; | |
2536 | } | |
2537 | if (PL_thistoken) | |
76f68e9b | 2538 | sv_setpvs(PL_thistoken,""); |
5db06880 | 2539 | else |
cd81e915 | 2540 | PL_realtokenstart = -1; |
5db06880 NC |
2541 | } |
2542 | #endif | |
f46d017c | 2543 | LEAVE; |
3280af22 NIS |
2544 | PL_bufend = SvPVX(PL_linestr); |
2545 | PL_bufend += SvCUR(PL_linestr); | |
2546 | PL_expect = XOPERATOR; | |
09bef843 | 2547 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 2548 | return ')'; |
ffed7fef LW |
2549 | } |
2550 | } | |
2551 | ||
02aa26ce NT |
2552 | /* |
2553 | scan_const | |
2554 | ||
2555 | Extracts a pattern, double-quoted string, or transliteration. This | |
2556 | is terrifying code. | |
2557 | ||
94def140 | 2558 | It looks at PL_lex_inwhat and PL_lex_inpat to find out whether it's |
3280af22 | 2559 | processing a pattern (PL_lex_inpat is true), a transliteration |
94def140 | 2560 | (PL_lex_inwhat == OP_TRANS is true), or a double-quoted string. |
02aa26ce | 2561 | |
94def140 TS |
2562 | Returns a pointer to the character scanned up to. If this is |
2563 | advanced from the start pointer supplied (i.e. if anything was | |
9b599b2a | 2564 | successfully parsed), will leave an OP for the substring scanned |
6154021b | 2565 | in pl_yylval. Caller must intuit reason for not parsing further |
9b599b2a GS |
2566 | by looking at the next characters herself. |
2567 | ||
02aa26ce NT |
2568 | In patterns: |
2569 | backslashes: | |
ff3f963a | 2570 | constants: \N{NAME} only |
02aa26ce NT |
2571 | case and quoting: \U \Q \E |
2572 | stops on @ and $, but not for $ as tail anchor | |
2573 | ||
2574 | In transliterations: | |
2575 | characters are VERY literal, except for - not at the start or end | |
94def140 TS |
2576 | of the string, which indicates a range. If the range is in bytes, |
2577 | scan_const expands the range to the full set of intermediate | |
2578 | characters. If the range is in utf8, the hyphen is replaced with | |
2579 | a certain range mark which will be handled by pmtrans() in op.c. | |
02aa26ce NT |
2580 | |
2581 | In double-quoted strings: | |
2582 | backslashes: | |
2583 | double-quoted style: \r and \n | |
ff3f963a | 2584 | constants: \x31, etc. |
94def140 | 2585 | deprecated backrefs: \1 (in substitution replacements) |
02aa26ce NT |
2586 | case and quoting: \U \Q \E |
2587 | stops on @ and $ | |
2588 | ||
2589 | scan_const does *not* construct ops to handle interpolated strings. | |
2590 | It stops processing as soon as it finds an embedded $ or @ variable | |
2591 | and leaves it to the caller to work out what's going on. | |
2592 | ||
94def140 TS |
2593 | embedded arrays (whether in pattern or not) could be: |
2594 | @foo, @::foo, @'foo, @{foo}, @$foo, @+, @-. | |
2595 | ||
2596 | $ in double-quoted strings must be the symbol of an embedded scalar. | |
02aa26ce NT |
2597 | |
2598 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
2599 | it's a tail anchor if $ is the last thing in the string, or if it's | |
94def140 | 2600 | followed by one of "()| \r\n\t" |
02aa26ce NT |
2601 | |
2602 | \1 (backreferences) are turned into $1 | |
2603 | ||
2604 | The structure of the code is | |
2605 | while (there's a character to process) { | |
94def140 TS |
2606 | handle transliteration ranges |
2607 | skip regexp comments /(?#comment)/ and codes /(?{code})/ | |
2608 | skip #-initiated comments in //x patterns | |
2609 | check for embedded arrays | |
02aa26ce NT |
2610 | check for embedded scalars |
2611 | if (backslash) { | |
94def140 | 2612 | deprecate \1 in substitution replacements |
02aa26ce NT |
2613 | handle string-changing backslashes \l \U \Q \E, etc. |
2614 | switch (what was escaped) { | |
94def140 | 2615 | handle \- in a transliteration (becomes a literal -) |
ff3f963a | 2616 | if a pattern and not \N{, go treat as regular character |
94def140 TS |
2617 | handle \132 (octal characters) |
2618 | handle \x15 and \x{1234} (hex characters) | |
ff3f963a | 2619 | handle \N{name} (named characters, also \N{3,5} in a pattern) |
94def140 TS |
2620 | handle \cV (control characters) |
2621 | handle printf-style backslashes (\f, \r, \n, etc) | |
02aa26ce | 2622 | } (end switch) |
77a135fe | 2623 | continue |
02aa26ce | 2624 | } (end if backslash) |
77a135fe | 2625 | handle regular character |
02aa26ce | 2626 | } (end while character to read) |
4e553d73 | 2627 | |
02aa26ce NT |
2628 | */ |
2629 | ||
76e3520e | 2630 | STATIC char * |
cea2e8a9 | 2631 | S_scan_const(pTHX_ char *start) |
79072805 | 2632 | { |
97aff369 | 2633 | dVAR; |
3280af22 | 2634 | register char *send = PL_bufend; /* end of the constant */ |
77a135fe KW |
2635 | SV *sv = newSV(send - start); /* sv for the constant. See |
2636 | note below on sizing. */ | |
02aa26ce NT |
2637 | register char *s = start; /* start of the constant */ |
2638 | register char *d = SvPVX(sv); /* destination for copies */ | |
2639 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 2640 | bool didrange = FALSE; /* did we just finish a range? */ |
b953e60c KW |
2641 | bool has_utf8 = FALSE; /* Output constant is UTF8 */ |
2642 | bool this_utf8 = cBOOL(UTF); /* Is the source string assumed | |
77a135fe KW |
2643 | to be UTF8? But, this can |
2644 | show as true when the source | |
2645 | isn't utf8, as for example | |
2646 | when it is entirely composed | |
2647 | of hex constants */ | |
2648 | ||
2649 | /* Note on sizing: The scanned constant is placed into sv, which is | |
2650 | * initialized by newSV() assuming one byte of output for every byte of | |
2651 | * input. This routine expects newSV() to allocate an extra byte for a | |
2652 | * trailing NUL, which this routine will append if it gets to the end of | |
2653 | * the input. There may be more bytes of input than output (eg., \N{LATIN | |
2654 | * CAPITAL LETTER A}), or more output than input if the constant ends up | |
2655 | * recoded to utf8, but each time a construct is found that might increase | |
2656 | * the needed size, SvGROW() is called. Its size parameter each time is | |
2657 | * based on the best guess estimate at the time, namely the length used so | |
2658 | * far, plus the length the current construct will occupy, plus room for | |
2659 | * the trailing NUL, plus one byte for every input byte still unscanned */ | |
2660 | ||
012bcf8d | 2661 | UV uv; |
4c3a8340 TS |
2662 | #ifdef EBCDIC |
2663 | UV literal_endpoint = 0; | |
e294cc5d | 2664 | bool native_range = TRUE; /* turned to FALSE if the first endpoint is Unicode. */ |
4c3a8340 | 2665 | #endif |
012bcf8d | 2666 | |
7918f24d NC |
2667 | PERL_ARGS_ASSERT_SCAN_CONST; |
2668 | ||
bb16bae8 | 2669 | assert(PL_lex_inwhat != OP_TRANSR); |
2b9d42f0 NIS |
2670 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
2671 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
2672 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
2673 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
2674 | } | |
2675 | ||
2676 | ||
79072805 | 2677 | while (s < send || dorange) { |
ff3f963a | 2678 | |
02aa26ce | 2679 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 2680 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 2681 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 2682 | if (dorange) { |
1ba5c669 JH |
2683 | I32 i; /* current expanded character */ |
2684 | I32 min; /* first character in range */ | |
2685 | I32 max; /* last character in range */ | |
02aa26ce | 2686 | |
e294cc5d JH |
2687 | #ifdef EBCDIC |
2688 | UV uvmax = 0; | |
2689 | #endif | |
2690 | ||
2691 | if (has_utf8 | |
2692 | #ifdef EBCDIC | |
2693 | && !native_range | |
2694 | #endif | |
2695 | ) { | |
9d4ba2ae | 2696 | char * const c = (char*)utf8_hop((U8*)d, -1); |
8973db79 JH |
2697 | char *e = d++; |
2698 | while (e-- > c) | |
2699 | *(e + 1) = *e; | |
25716404 | 2700 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
2701 | /* mark the range as done, and continue */ |
2702 | dorange = FALSE; | |
2703 | didrange = TRUE; | |
2704 | continue; | |
2705 | } | |
2b9d42f0 | 2706 | |
95a20fc0 | 2707 | i = d - SvPVX_const(sv); /* remember current offset */ |
e294cc5d JH |
2708 | #ifdef EBCDIC |
2709 | SvGROW(sv, | |
2710 | SvLEN(sv) + (has_utf8 ? | |
2711 | (512 - UTF_CONTINUATION_MARK + | |
2712 | UNISKIP(0x100)) | |
2713 | : 256)); | |
2714 | /* How many two-byte within 0..255: 128 in UTF-8, | |
2715 | * 96 in UTF-8-mod. */ | |
2716 | #else | |
9cbb5ea2 | 2717 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
e294cc5d | 2718 | #endif |
9cbb5ea2 | 2719 | d = SvPVX(sv) + i; /* refresh d after realloc */ |
e294cc5d JH |
2720 | #ifdef EBCDIC |
2721 | if (has_utf8) { | |
2722 | int j; | |
2723 | for (j = 0; j <= 1; j++) { | |
2724 | char * const c = (char*)utf8_hop((U8*)d, -1); | |
2725 | const UV uv = utf8n_to_uvchr((U8*)c, d - c, NULL, 0); | |
2726 | if (j) | |
2727 | min = (U8)uv; | |
2728 | else if (uv < 256) | |
2729 | max = (U8)uv; | |
2730 | else { | |
2731 | max = (U8)0xff; /* only to \xff */ | |
2732 | uvmax = uv; /* \x{100} to uvmax */ | |
2733 | } | |
2734 | d = c; /* eat endpoint chars */ | |
2735 | } | |
2736 | } | |
2737 | else { | |
2738 | #endif | |
2739 | d -= 2; /* eat the first char and the - */ | |
2740 | min = (U8)*d; /* first char in range */ | |
2741 | max = (U8)d[1]; /* last char in range */ | |
2742 | #ifdef EBCDIC | |
2743 | } | |
2744 | #endif | |
8ada0baa | 2745 | |
c2e66d9e | 2746 | if (min > max) { |
01ec43d0 | 2747 | Perl_croak(aTHX_ |
d1573ac7 | 2748 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 2749 | (char)min, (char)max); |
c2e66d9e GS |
2750 | } |
2751 | ||
c7f1f016 | 2752 | #ifdef EBCDIC |
4c3a8340 TS |
2753 | if (literal_endpoint == 2 && |
2754 | ((isLOWER(min) && isLOWER(max)) || | |
2755 | (isUPPER(min) && isUPPER(max)))) { | |
8ada0baa JH |
2756 | if (isLOWER(min)) { |
2757 | for (i = min; i <= max; i++) | |
2758 | if (isLOWER(i)) | |
db42d148 | 2759 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
2760 | } else { |
2761 | for (i = min; i <= max; i++) | |
2762 | if (isUPPER(i)) | |
db42d148 | 2763 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
2764 | } |
2765 | } | |
2766 | else | |
2767 | #endif | |
2768 | for (i = min; i <= max; i++) | |
e294cc5d JH |
2769 | #ifdef EBCDIC |
2770 | if (has_utf8) { | |
2771 | const U8 ch = (U8)NATIVE_TO_UTF(i); | |
2772 | if (UNI_IS_INVARIANT(ch)) | |
2773 | *d++ = (U8)i; | |
2774 | else { | |
2775 | *d++ = (U8)UTF8_EIGHT_BIT_HI(ch); | |
2776 | *d++ = (U8)UTF8_EIGHT_BIT_LO(ch); | |
2777 | } | |
2778 | } | |
2779 | else | |
2780 | #endif | |
2781 | *d++ = (char)i; | |
2782 | ||
2783 | #ifdef EBCDIC | |
2784 | if (uvmax) { | |
2785 | d = (char*)uvchr_to_utf8((U8*)d, 0x100); | |
2786 | if (uvmax > 0x101) | |
2787 | *d++ = (char)UTF_TO_NATIVE(0xff); | |
2788 | if (uvmax > 0x100) | |
2789 | d = (char*)uvchr_to_utf8((U8*)d, uvmax); | |
2790 | } | |
2791 | #endif | |
02aa26ce NT |
2792 | |
2793 | /* mark the range as done, and continue */ | |
79072805 | 2794 | dorange = FALSE; |
01ec43d0 | 2795 | didrange = TRUE; |
4c3a8340 TS |
2796 | #ifdef EBCDIC |
2797 | literal_endpoint = 0; | |
2798 | #endif | |
79072805 | 2799 | continue; |
4e553d73 | 2800 | } |
02aa26ce NT |
2801 | |
2802 | /* range begins (ignore - as first or last char) */ | |
79072805 | 2803 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 2804 | if (didrange) { |
1fafa243 | 2805 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 2806 | } |
e294cc5d JH |
2807 | if (has_utf8 |
2808 | #ifdef EBCDIC | |
2809 | && !native_range | |
2810 | #endif | |
2811 | ) { | |
25716404 | 2812 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
2813 | s++; |
2814 | continue; | |
2815 | } | |
79072805 LW |
2816 | dorange = TRUE; |
2817 | s++; | |
01ec43d0 GS |
2818 | } |
2819 | else { | |
2820 | didrange = FALSE; | |
4c3a8340 TS |
2821 | #ifdef EBCDIC |
2822 | literal_endpoint = 0; | |
e294cc5d | 2823 | native_range = TRUE; |
4c3a8340 | 2824 | #endif |
01ec43d0 | 2825 | } |
79072805 | 2826 | } |
02aa26ce NT |
2827 | |
2828 | /* if we get here, we're not doing a transliteration */ | |
2829 | ||
0f5d15d6 IZ |
2830 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
2831 | except for the last char, which will be done separately. */ | |
3280af22 | 2832 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 | 2833 | if (s[2] == '#') { |
e994fd66 | 2834 | while (s+1 < send && *s != ')') |
db42d148 | 2835 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
2836 | } |
2837 | else if (s[2] == '{' /* This should match regcomp.c */ | |
67edc0c9 | 2838 | || (s[2] == '?' && s[3] == '{')) |
155aba94 | 2839 | { |
cc6b7395 | 2840 | I32 count = 1; |
0f5d15d6 | 2841 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
2842 | char c; |
2843 | ||
d9f97599 GS |
2844 | while (count && (c = *regparse)) { |
2845 | if (c == '\\' && regparse[1]) | |
2846 | regparse++; | |
4e553d73 | 2847 | else if (c == '{') |
cc6b7395 | 2848 | count++; |
4e553d73 | 2849 | else if (c == '}') |
cc6b7395 | 2850 | count--; |
d9f97599 | 2851 | regparse++; |
cc6b7395 | 2852 | } |
e994fd66 | 2853 | if (*regparse != ')') |
5bdf89e7 | 2854 | regparse--; /* Leave one char for continuation. */ |
0f5d15d6 | 2855 | while (s < regparse) |
db42d148 | 2856 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 2857 | } |
748a9306 | 2858 | } |
02aa26ce NT |
2859 | |
2860 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 | 2861 | else if (*s == '#' && PL_lex_inpat && |
73134a2e | 2862 | ((PMOP*)PL_lex_inpat)->op_pmflags & RXf_PMf_EXTENDED) { |
748a9306 | 2863 | while (s+1 < send && *s != '\n') |
db42d148 | 2864 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 2865 | } |
02aa26ce | 2866 | |
5d1d4326 | 2867 | /* check for embedded arrays |
da6eedaa | 2868 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 2869 | */ |
1749ea0d TS |
2870 | else if (*s == '@' && s[1]) { |
2871 | if (isALNUM_lazy_if(s+1,UTF)) | |
2872 | break; | |
2873 | if (strchr(":'{$", s[1])) | |
2874 | break; | |
2875 | if (!PL_lex_inpat && (s[1] == '+' || s[1] == '-')) | |
2876 | break; /* in regexp, neither @+ nor @- are interpolated */ | |
2877 | } | |
02aa26ce NT |
2878 | |
2879 | /* check for embedded scalars. only stop if we're sure it's a | |
2880 | variable. | |
2881 | */ | |
79072805 | 2882 | else if (*s == '$') { |
3280af22 | 2883 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 2884 | break; |
77772344 | 2885 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) { |
a2a5de95 NC |
2886 | if (s[1] == '\\') { |
2887 | Perl_ck_warner(aTHX_ packWARN(WARN_AMBIGUOUS), | |
2888 | "Possible unintended interpolation of $\\ in regex"); | |
77772344 | 2889 | } |
79072805 | 2890 | break; /* in regexp, $ might be tail anchor */ |
77772344 | 2891 | } |
79072805 | 2892 | } |
02aa26ce | 2893 | |
2b9d42f0 NIS |
2894 | /* End of else if chain - OP_TRANS rejoin rest */ |
2895 | ||
02aa26ce | 2896 | /* backslashes */ |
79072805 | 2897 | if (*s == '\\' && s+1 < send) { |
ff3f963a KW |
2898 | char* e; /* Can be used for ending '}', etc. */ |
2899 | ||
79072805 | 2900 | s++; |
02aa26ce | 2901 | |
7d0fc23c KW |
2902 | /* warn on \1 - \9 in substitution replacements, but note that \11 |
2903 | * is an octal; and \19 is \1 followed by '9' */ | |
3280af22 | 2904 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 2905 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 2906 | { |
a2a5de95 | 2907 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
2908 | *--s = '$'; |
2909 | break; | |
2910 | } | |
02aa26ce NT |
2911 | |
2912 | /* string-change backslash escapes */ | |
3280af22 | 2913 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
2914 | --s; |
2915 | break; | |
2916 | } | |
ff3f963a KW |
2917 | /* In a pattern, process \N, but skip any other backslash escapes. |
2918 | * This is because we don't want to translate an escape sequence | |
2919 | * into a meta symbol and have the regex compiler use the meta | |
2920 | * symbol meaning, e.g. \x{2E} would be confused with a dot. But | |
2921 | * in spite of this, we do have to process \N here while the proper | |
2922 | * charnames handler is in scope. See bugs #56444 and #62056. | |
2923 | * There is a complication because \N in a pattern may also stand | |
2924 | * for 'match a non-nl', and not mean a charname, in which case its | |
2925 | * processing should be deferred to the regex compiler. To be a | |
2926 | * charname it must be followed immediately by a '{', and not look | |
2927 | * like \N followed by a curly quantifier, i.e., not something like | |
2928 | * \N{3,}. regcurly returns a boolean indicating if it is a legal | |
2929 | * quantifier */ | |
2930 | else if (PL_lex_inpat | |
2931 | && (*s != 'N' | |
2932 | || s[1] != '{' | |
2933 | || regcurly(s + 1))) | |
2934 | { | |
cc74c5bd TS |
2935 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
2936 | goto default_action; | |
2937 | } | |
02aa26ce | 2938 | |
79072805 | 2939 | switch (*s) { |
02aa26ce NT |
2940 | |
2941 | /* quoted - in transliterations */ | |
79072805 | 2942 | case '-': |
3280af22 | 2943 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
2944 | *d++ = *s++; |
2945 | continue; | |
2946 | } | |
2947 | /* FALL THROUGH */ | |
2948 | default: | |
11b8faa4 | 2949 | { |
a2a5de95 NC |
2950 | if ((isALPHA(*s) || isDIGIT(*s))) |
2951 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
2952 | "Unrecognized escape \\%c passed through", | |
2953 | *s); | |
11b8faa4 | 2954 | /* default action is to copy the quoted character */ |
f9a63242 | 2955 | goto default_action; |
11b8faa4 | 2956 | } |
02aa26ce | 2957 | |
632403cc | 2958 | /* eg. \132 indicates the octal constant 0132 */ |
79072805 LW |
2959 | case '0': case '1': case '2': case '3': |
2960 | case '4': case '5': case '6': case '7': | |
ba210ebe | 2961 | { |
53305cf1 NC |
2962 | I32 flags = 0; |
2963 | STRLEN len = 3; | |
77a135fe | 2964 | uv = NATIVE_TO_UNI(grok_oct(s, &len, &flags, NULL)); |
ba210ebe JH |
2965 | s += len; |
2966 | } | |
012bcf8d | 2967 | goto NUM_ESCAPE_INSERT; |
02aa26ce | 2968 | |
f0a2b745 KW |
2969 | /* eg. \o{24} indicates the octal constant \024 */ |
2970 | case 'o': | |
2971 | { | |
2972 | STRLEN len; | |
454155d9 | 2973 | const char* error; |
f0a2b745 | 2974 | |
454155d9 | 2975 | bool valid = grok_bslash_o(s, &uv, &len, &error, 1); |
f0a2b745 | 2976 | s += len; |
454155d9 | 2977 | if (! valid) { |
f0a2b745 KW |
2978 | yyerror(error); |
2979 | continue; | |
2980 | } | |
2981 | goto NUM_ESCAPE_INSERT; | |
2982 | } | |
2983 | ||
77a135fe | 2984 | /* eg. \x24 indicates the hex constant 0x24 */ |
79072805 | 2985 | case 'x': |
a0ed51b3 LW |
2986 | ++s; |
2987 | if (*s == '{') { | |
9d4ba2ae | 2988 | char* const e = strchr(s, '}'); |
a4c04bdc NC |
2989 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
2990 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 2991 | STRLEN len; |
355860ce | 2992 | |
53305cf1 | 2993 | ++s; |
adaeee49 | 2994 | if (!e) { |
a0ed51b3 | 2995 | yyerror("Missing right brace on \\x{}"); |
355860ce | 2996 | continue; |
ba210ebe | 2997 | } |
53305cf1 | 2998 | len = e - s; |
77a135fe | 2999 | uv = NATIVE_TO_UNI(grok_hex(s, &len, &flags, NULL)); |
ba210ebe | 3000 | s = e + 1; |
a0ed51b3 LW |
3001 | } |
3002 | else { | |
ba210ebe | 3003 | { |
53305cf1 | 3004 | STRLEN len = 2; |
a4c04bdc | 3005 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
77a135fe | 3006 | uv = NATIVE_TO_UNI(grok_hex(s, &len, &flags, NULL)); |
ba210ebe JH |
3007 | s += len; |
3008 | } | |
012bcf8d GS |
3009 | } |
3010 | ||
3011 | NUM_ESCAPE_INSERT: | |
ff3f963a KW |
3012 | /* Insert oct or hex escaped character. There will always be |
3013 | * enough room in sv since such escapes will be longer than any | |
3014 | * UTF-8 sequence they can end up as, except if they force us | |
3015 | * to recode the rest of the string into utf8 */ | |
ba7cea30 | 3016 | |
77a135fe | 3017 | /* Here uv is the ordinal of the next character being added in |
ff3f963a | 3018 | * unicode (converted from native). */ |
77a135fe | 3019 | if (!UNI_IS_INVARIANT(uv)) { |
9aa983d2 | 3020 | if (!has_utf8 && uv > 255) { |
77a135fe KW |
3021 | /* Might need to recode whatever we have accumulated so |
3022 | * far if it contains any chars variant in utf8 or | |
3023 | * utf-ebcdic. */ | |
3024 | ||
3025 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3026 | SvPOK_on(sv); | |
3027 | *d = '\0'; | |
77a135fe | 3028 | /* See Note on sizing above. */ |
7bf79863 KW |
3029 | sv_utf8_upgrade_flags_grow(sv, |
3030 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3031 | UNISKIP(uv) + (STRLEN)(send - s) + 1); | |
77a135fe KW |
3032 | d = SvPVX(sv) + SvCUR(sv); |
3033 | has_utf8 = TRUE; | |
012bcf8d GS |
3034 | } |
3035 | ||
77a135fe KW |
3036 | if (has_utf8) { |
3037 | d = (char*)uvuni_to_utf8((U8*)d, uv); | |
f9a63242 JH |
3038 | if (PL_lex_inwhat == OP_TRANS && |
3039 | PL_sublex_info.sub_op) { | |
3040 | PL_sublex_info.sub_op->op_private |= | |
3041 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
3042 | : OPpTRANS_TO_UTF); | |
f9a63242 | 3043 | } |
e294cc5d JH |
3044 | #ifdef EBCDIC |
3045 | if (uv > 255 && !dorange) | |
3046 | native_range = FALSE; | |
3047 | #endif | |
012bcf8d | 3048 | } |
a0ed51b3 | 3049 | else { |
012bcf8d | 3050 | *d++ = (char)uv; |
a0ed51b3 | 3051 | } |
012bcf8d GS |
3052 | } |
3053 | else { | |
c4d5f83a | 3054 | *d++ = (char) uv; |
a0ed51b3 | 3055 | } |
79072805 | 3056 | continue; |
02aa26ce | 3057 | |
4a2d328f | 3058 | case 'N': |
ff3f963a KW |
3059 | /* In a non-pattern \N must be a named character, like \N{LATIN |
3060 | * SMALL LETTER A} or \N{U+0041}. For patterns, it also can | |
3061 | * mean to match a non-newline. For non-patterns, named | |
3062 | * characters are converted to their string equivalents. In | |
3063 | * patterns, named characters are not converted to their | |
3064 | * ultimate forms for the same reasons that other escapes | |
3065 | * aren't. Instead, they are converted to the \N{U+...} form | |
3066 | * to get the value from the charnames that is in effect right | |
3067 | * now, while preserving the fact that it was a named character | |
3068 | * so that the regex compiler knows this */ | |
3069 | ||
3070 | /* This section of code doesn't generally use the | |
3071 | * NATIVE_TO_NEED() macro to transform the input. I (khw) did | |
3072 | * a close examination of this macro and determined it is a | |
3073 | * no-op except on utfebcdic variant characters. Every | |
3074 | * character generated by this that would normally need to be | |
3075 | * enclosed by this macro is invariant, so the macro is not | |
7538f724 KW |
3076 | * needed, and would complicate use of copy(). XXX There are |
3077 | * other parts of this file where the macro is used | |
3078 | * inconsistently, but are saved by it being a no-op */ | |
ff3f963a KW |
3079 | |
3080 | /* The structure of this section of code (besides checking for | |
3081 | * errors and upgrading to utf8) is: | |
3082 | * Further disambiguate between the two meanings of \N, and if | |
3083 | * not a charname, go process it elsewhere | |
0a96133f KW |
3084 | * If of form \N{U+...}, pass it through if a pattern; |
3085 | * otherwise convert to utf8 | |
3086 | * Otherwise must be \N{NAME}: convert to \N{U+c1.c2...} if a | |
3087 | * pattern; otherwise convert to utf8 */ | |
ff3f963a KW |
3088 | |
3089 | /* Here, s points to the 'N'; the test below is guaranteed to | |
3090 | * succeed if we are being called on a pattern as we already | |
3091 | * know from a test above that the next character is a '{'. | |
3092 | * On a non-pattern \N must mean 'named sequence, which | |
3093 | * requires braces */ | |
3094 | s++; | |
3095 | if (*s != '{') { | |
3096 | yyerror("Missing braces on \\N{}"); | |
3097 | continue; | |
3098 | } | |
3099 | s++; | |
3100 | ||
0a96133f | 3101 | /* If there is no matching '}', it is an error. */ |
ff3f963a KW |
3102 | if (! (e = strchr(s, '}'))) { |
3103 | if (! PL_lex_inpat) { | |
5777a3f7 | 3104 | yyerror("Missing right brace on \\N{}"); |
0a96133f KW |
3105 | } else { |
3106 | yyerror("Missing right brace on \\N{} or unescaped left brace after \\N."); | |
dbc0d4f2 | 3107 | } |
0a96133f | 3108 | continue; |
ff3f963a | 3109 | } |
cddc7ef4 | 3110 | |
ff3f963a | 3111 | /* Here it looks like a named character */ |
cddc7ef4 | 3112 | |
ff3f963a KW |
3113 | if (PL_lex_inpat) { |
3114 | ||
3115 | /* XXX This block is temporary code. \N{} implies that the | |
3116 | * pattern is to have Unicode semantics, and therefore | |
3117 | * currently has to be encoded in utf8. By putting it in | |
3118 | * utf8 now, we save a whole pass in the regular expression | |
3119 | * compiler. Once that code is changed so Unicode | |
3120 | * semantics doesn't necessarily have to be in utf8, this | |
da3a4baf KW |
3121 | * block should be removed. However, the code that parses |
3122 | * the output of this would have to be changed to not | |
3123 | * necessarily expect utf8 */ | |
ff3f963a | 3124 | if (!has_utf8) { |
77a135fe | 3125 | SvCUR_set(sv, d - SvPVX_const(sv)); |
f08d6ad9 | 3126 | SvPOK_on(sv); |
e4f3eed8 | 3127 | *d = '\0'; |
77a135fe | 3128 | /* See Note on sizing above. */ |
7bf79863 | 3129 | sv_utf8_upgrade_flags_grow(sv, |
ff3f963a KW |
3130 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, |
3131 | /* 5 = '\N{' + cur char + NUL */ | |
3132 | (STRLEN)(send - s) + 5); | |
f08d6ad9 | 3133 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 3134 | has_utf8 = TRUE; |
ff3f963a KW |
3135 | } |
3136 | } | |
423cee85 | 3137 | |
ff3f963a KW |
3138 | if (*s == 'U' && s[1] == '+') { /* \N{U+...} */ |
3139 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
3140 | | PERL_SCAN_DISALLOW_PREFIX; | |
3141 | STRLEN len; | |
3142 | ||
3143 | /* For \N{U+...}, the '...' is a unicode value even on | |
3144 | * EBCDIC machines */ | |
3145 | s += 2; /* Skip to next char after the 'U+' */ | |
3146 | len = e - s; | |
3147 | uv = grok_hex(s, &len, &flags, NULL); | |
3148 | if (len == 0 || len != (STRLEN)(e - s)) { | |
3149 | yyerror("Invalid hexadecimal number in \\N{U+...}"); | |
3150 | s = e + 1; | |
3151 | continue; | |
3152 | } | |
3153 | ||
3154 | if (PL_lex_inpat) { | |
3155 | ||
e2a7e165 KW |
3156 | /* On non-EBCDIC platforms, pass through to the regex |
3157 | * compiler unchanged. The reason we evaluated the | |
3158 | * number above is to make sure there wasn't a syntax | |
3159 | * error. But on EBCDIC we convert to native so | |
3160 | * downstream code can continue to assume it's native | |
3161 | */ | |
ff3f963a | 3162 | s -= 5; /* Include the '\N{U+' */ |
e2a7e165 KW |
3163 | #ifdef EBCDIC |
3164 | d += my_snprintf(d, e - s + 1 + 1, /* includes the } | |
3165 | and the \0 */ | |
3166 | "\\N{U+%X}", | |
3167 | (unsigned int) UNI_TO_NATIVE(uv)); | |
3168 | #else | |
ff3f963a KW |
3169 | Copy(s, d, e - s + 1, char); /* 1 = include the } */ |
3170 | d += e - s + 1; | |
e2a7e165 | 3171 | #endif |
ff3f963a KW |
3172 | } |
3173 | else { /* Not a pattern: convert the hex to string */ | |
3174 | ||
3175 | /* If destination is not in utf8, unconditionally | |
3176 | * recode it to be so. This is because \N{} implies | |
3177 | * Unicode semantics, and scalars have to be in utf8 | |
3178 | * to guarantee those semantics */ | |
3179 | if (! has_utf8) { | |
3180 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3181 | SvPOK_on(sv); | |
3182 | *d = '\0'; | |
3183 | /* See Note on sizing above. */ | |
3184 | sv_utf8_upgrade_flags_grow( | |
3185 | sv, | |
3186 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3187 | UNISKIP(uv) + (STRLEN)(send - e) + 1); | |
3188 | d = SvPVX(sv) + SvCUR(sv); | |
3189 | has_utf8 = TRUE; | |
3190 | } | |
3191 | ||
3192 | /* Add the string to the output */ | |
3193 | if (UNI_IS_INVARIANT(uv)) { | |
3194 | *d++ = (char) uv; | |
3195 | } | |
3196 | else d = (char*)uvuni_to_utf8((U8*)d, uv); | |
3197 | } | |
3198 | } | |
3199 | else { /* Here is \N{NAME} but not \N{U+...}. */ | |
3200 | ||
3201 | SV *res; /* result from charnames */ | |
3202 | const char *str; /* the string in 'res' */ | |
3203 | STRLEN len; /* its length */ | |
3204 | ||
3205 | /* Get the value for NAME */ | |
3206 | res = newSVpvn(s, e - s); | |
3207 | res = new_constant( NULL, 0, "charnames", | |
3208 | /* includes all of: \N{...} */ | |
3209 | res, NULL, s - 3, e - s + 4 ); | |
3210 | ||
3211 | /* Most likely res will be in utf8 already since the | |
3212 | * standard charnames uses pack U, but a custom translator | |
3213 | * can leave it otherwise, so make sure. XXX This can be | |
3214 | * revisited to not have charnames use utf8 for characters | |
3215 | * that don't need it when regexes don't have to be in utf8 | |
3216 | * for Unicode semantics. If doing so, remember EBCDIC */ | |
3217 | sv_utf8_upgrade(res); | |
3218 | str = SvPV_const(res, len); | |
3219 | ||
3220 | /* Don't accept malformed input */ | |
3221 | if (! is_utf8_string((U8 *) str, len)) { | |
3222 | yyerror("Malformed UTF-8 returned by \\N"); | |
3223 | } | |
3224 | else if (PL_lex_inpat) { | |
3225 | ||
3226 | if (! len) { /* The name resolved to an empty string */ | |
3227 | Copy("\\N{}", d, 4, char); | |
3228 | d += 4; | |
3229 | } | |
3230 | else { | |
3231 | /* In order to not lose information for the regex | |
3232 | * compiler, pass the result in the specially made | |
3233 | * syntax: \N{U+c1.c2.c3...}, where c1 etc. are | |
3234 | * the code points in hex of each character | |
3235 | * returned by charnames */ | |
3236 | ||
3237 | const char *str_end = str + len; | |
3238 | STRLEN char_length; /* cur char's byte length */ | |
3239 | STRLEN output_length; /* and the number of bytes | |
3240 | after this is translated | |
3241 | into hex digits */ | |
3242 | const STRLEN off = d - SvPVX_const(sv); | |
3243 | ||
3244 | /* 2 hex per byte; 2 chars for '\N'; 2 chars for | |
3245 | * max('U+', '.'); and 1 for NUL */ | |
3246 | char hex_string[2 * UTF8_MAXBYTES + 5]; | |
3247 | ||
3248 | /* Get the first character of the result. */ | |
3249 | U32 uv = utf8n_to_uvuni((U8 *) str, | |
3250 | len, | |
3251 | &char_length, | |
3252 | UTF8_ALLOW_ANYUV); | |
3253 | ||
3254 | /* The call to is_utf8_string() above hopefully | |
3255 | * guarantees that there won't be an error. But | |
3256 | * it's easy here to make sure. The function just | |
3257 | * above warns and returns 0 if invalid utf8, but | |
3258 | * it can also return 0 if the input is validly a | |
3259 | * NUL. Disambiguate */ | |
3260 | if (uv == 0 && NATIVE_TO_ASCII(*str) != '\0') { | |
3261 | uv = UNICODE_REPLACEMENT; | |
3262 | } | |
3263 | ||
3264 | /* Convert first code point to hex, including the | |
e2a7e165 KW |
3265 | * boiler plate before it. For all these, we |
3266 | * convert to native format so that downstream code | |
3267 | * can continue to assume the input is native */ | |
78c35590 | 3268 | output_length = |
3353de27 | 3269 | my_snprintf(hex_string, sizeof(hex_string), |
e2a7e165 KW |
3270 | "\\N{U+%X", |
3271 | (unsigned int) UNI_TO_NATIVE(uv)); | |
ff3f963a KW |
3272 | |
3273 | /* Make sure there is enough space to hold it */ | |
3274 | d = off + SvGROW(sv, off | |
3275 | + output_length | |
3276 | + (STRLEN)(send - e) | |
3277 | + 2); /* '}' + NUL */ | |
3278 | /* And output it */ | |
3279 | Copy(hex_string, d, output_length, char); | |
3280 | d += output_length; | |
3281 | ||
3282 | /* For each subsequent character, append dot and | |
3283 | * its ordinal in hex */ | |
3284 | while ((str += char_length) < str_end) { | |
3285 | const STRLEN off = d - SvPVX_const(sv); | |
3286 | U32 uv = utf8n_to_uvuni((U8 *) str, | |
3287 | str_end - str, | |
3288 | &char_length, | |
3289 | UTF8_ALLOW_ANYUV); | |
3290 | if (uv == 0 && NATIVE_TO_ASCII(*str) != '\0') { | |
3291 | uv = UNICODE_REPLACEMENT; | |
3292 | } | |
3293 | ||
78c35590 | 3294 | output_length = |
3353de27 | 3295 | my_snprintf(hex_string, sizeof(hex_string), |
e2a7e165 KW |
3296 | ".%X", |
3297 | (unsigned int) UNI_TO_NATIVE(uv)); | |
ff3f963a KW |
3298 | |
3299 | d = off + SvGROW(sv, off | |
3300 | + output_length | |
3301 | + (STRLEN)(send - e) | |
3302 | + 2); /* '}' + NUL */ | |
3303 | Copy(hex_string, d, output_length, char); | |
3304 | d += output_length; | |
3305 | } | |
3306 | ||
3307 | *d++ = '}'; /* Done. Add the trailing brace */ | |
3308 | } | |
3309 | } | |
3310 | else { /* Here, not in a pattern. Convert the name to a | |
3311 | * string. */ | |
3312 | ||
3313 | /* If destination is not in utf8, unconditionally | |
3314 | * recode it to be so. This is because \N{} implies | |
3315 | * Unicode semantics, and scalars have to be in utf8 | |
3316 | * to guarantee those semantics */ | |
3317 | if (! has_utf8) { | |
3318 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3319 | SvPOK_on(sv); | |
3320 | *d = '\0'; | |
3321 | /* See Note on sizing above. */ | |
3322 | sv_utf8_upgrade_flags_grow(sv, | |
3323 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3324 | len + (STRLEN)(send - s) + 1); | |
3325 | d = SvPVX(sv) + SvCUR(sv); | |
3326 | has_utf8 = TRUE; | |
3327 | } else if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ | |
3328 | ||
3329 | /* See Note on sizing above. (NOTE: SvCUR() is not | |
3330 | * set correctly here). */ | |
3331 | const STRLEN off = d - SvPVX_const(sv); | |
3332 | d = off + SvGROW(sv, off + len + (STRLEN)(send - s) + 1); | |
3333 | } | |
3334 | Copy(str, d, len, char); | |
3335 | d += len; | |
423cee85 | 3336 | } |
423cee85 | 3337 | SvREFCNT_dec(res); |
cb233ae3 KW |
3338 | |
3339 | /* Deprecate non-approved name syntax */ | |
3340 | if (ckWARN_d(WARN_DEPRECATED)) { | |
3341 | bool problematic = FALSE; | |
3342 | char* i = s; | |
3343 | ||
3344 | /* For non-ut8 input, look to see that the first | |
3345 | * character is an alpha, then loop through the rest | |
3346 | * checking that each is a continuation */ | |
3347 | if (! this_utf8) { | |
3348 | if (! isALPHAU(*i)) problematic = TRUE; | |
3349 | else for (i = s + 1; i < e; i++) { | |
3350 | if (isCHARNAME_CONT(*i)) continue; | |
3351 | problematic = TRUE; | |
3352 | break; | |
3353 | } | |
3354 | } | |
3355 | else { | |
3356 | /* Similarly for utf8. For invariants can check | |
3357 | * directly. We accept anything above the latin1 | |
3358 | * range because it is immaterial to Perl if it is | |
3359 | * correct or not, and is expensive to check. But | |
3360 | * it is fairly easy in the latin1 range to convert | |
3361 | * the variants into a single character and check | |
3362 | * those */ | |
3363 | if (UTF8_IS_INVARIANT(*i)) { | |
3364 | if (! isALPHAU(*i)) problematic = TRUE; | |
3365 | } else if (UTF8_IS_DOWNGRADEABLE_START(*i)) { | |
81c14aa2 | 3366 | if (! isALPHAU(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*i, |
cb233ae3 KW |
3367 | *(i+1))))) |
3368 | { | |
3369 | problematic = TRUE; | |
3370 | } | |
3371 | } | |
3372 | if (! problematic) for (i = s + UTF8SKIP(s); | |
3373 | i < e; | |
3374 | i+= UTF8SKIP(i)) | |
3375 | { | |
3376 | if (UTF8_IS_INVARIANT(*i)) { | |
3377 | if (isCHARNAME_CONT(*i)) continue; | |
3378 | } else if (! UTF8_IS_DOWNGRADEABLE_START(*i)) { | |
3379 | continue; | |
3380 | } else if (isCHARNAME_CONT( | |
3381 | UNI_TO_NATIVE( | |
81c14aa2 | 3382 | TWO_BYTE_UTF8_TO_UNI(*i, *(i+1))))) |
cb233ae3 KW |
3383 | { |
3384 | continue; | |
3385 | } | |
3386 | problematic = TRUE; | |
3387 | break; | |
3388 | } | |
3389 | } | |
3390 | if (problematic) { | |
6e1bad6c KW |
3391 | /* The e-i passed to the final %.*s makes sure that |
3392 | * should the trailing NUL be missing that this | |
3393 | * print won't run off the end of the string */ | |
cb233ae3 | 3394 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), |
b00fc8d4 NC |
3395 | "Deprecated character in \\N{...}; marked by <-- HERE in \\N{%.*s<-- HERE %.*s", |
3396 | (int)(i - s + 1), s, (int)(e - i), i + 1); | |
cb233ae3 KW |
3397 | } |
3398 | } | |
3399 | } /* End \N{NAME} */ | |
ff3f963a KW |
3400 | #ifdef EBCDIC |
3401 | if (!dorange) | |
3402 | native_range = FALSE; /* \N{} is defined to be Unicode */ | |
3403 | #endif | |
3404 | s = e + 1; /* Point to just after the '}' */ | |
423cee85 JH |
3405 | continue; |
3406 | ||
02aa26ce | 3407 | /* \c is a control character */ |
79072805 LW |
3408 | case 'c': |
3409 | s++; | |
961ce445 | 3410 | if (s < send) { |
17a3df4c | 3411 | *d++ = grok_bslash_c(*s++, has_utf8, 1); |
ba210ebe | 3412 | } |
961ce445 RGS |
3413 | else { |
3414 | yyerror("Missing control char name in \\c"); | |
3415 | } | |
79072805 | 3416 | continue; |
02aa26ce NT |
3417 | |
3418 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 3419 | case 'b': |
db42d148 | 3420 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
3421 | break; |
3422 | case 'n': | |
db42d148 | 3423 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
3424 | break; |
3425 | case 'r': | |
db42d148 | 3426 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
3427 | break; |
3428 | case 'f': | |
db42d148 | 3429 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
3430 | break; |
3431 | case 't': | |
db42d148 | 3432 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 3433 | break; |
34a3fe2a | 3434 | case 'e': |
db42d148 | 3435 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
3436 | break; |
3437 | case 'a': | |
db42d148 | 3438 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 3439 | break; |
02aa26ce NT |
3440 | } /* end switch */ |
3441 | ||
79072805 LW |
3442 | s++; |
3443 | continue; | |
02aa26ce | 3444 | } /* end if (backslash) */ |
4c3a8340 TS |
3445 | #ifdef EBCDIC |
3446 | else | |
3447 | literal_endpoint++; | |
3448 | #endif | |
02aa26ce | 3449 | |
f9a63242 | 3450 | default_action: |
77a135fe KW |
3451 | /* If we started with encoded form, or already know we want it, |
3452 | then encode the next character */ | |
3453 | if (! NATIVE_IS_INVARIANT((U8)(*s)) && (this_utf8 || has_utf8)) { | |
2b9d42f0 | 3454 | STRLEN len = 1; |
77a135fe KW |
3455 | |
3456 | ||
3457 | /* One might think that it is wasted effort in the case of the | |
3458 | * source being utf8 (this_utf8 == TRUE) to take the next character | |
3459 | * in the source, convert it to an unsigned value, and then convert | |
3460 | * it back again. But the source has not been validated here. The | |
3461 | * routine that does the conversion checks for errors like | |
3462 | * malformed utf8 */ | |
3463 | ||
5f66b61c AL |
3464 | const UV nextuv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); |
3465 | const STRLEN need = UNISKIP(NATIVE_TO_UNI(nextuv)); | |
77a135fe KW |
3466 | if (!has_utf8) { |
3467 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3468 | SvPOK_on(sv); | |
3469 | *d = '\0'; | |
77a135fe | 3470 | /* See Note on sizing above. */ |
7bf79863 KW |
3471 | sv_utf8_upgrade_flags_grow(sv, |
3472 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3473 | need + (STRLEN)(send - s) + 1); | |
77a135fe KW |
3474 | d = SvPVX(sv) + SvCUR(sv); |
3475 | has_utf8 = TRUE; | |
3476 | } else if (need > len) { | |
3477 | /* encoded value larger than old, may need extra space (NOTE: | |
3478 | * SvCUR() is not set correctly here). See Note on sizing | |
3479 | * above. */ | |
9d4ba2ae | 3480 | const STRLEN off = d - SvPVX_const(sv); |
77a135fe | 3481 | d = SvGROW(sv, off + need + (STRLEN)(send - s) + 1) + off; |
2b9d42f0 | 3482 | } |
77a135fe KW |
3483 | s += len; |
3484 | ||
5f66b61c | 3485 | d = (char*)uvchr_to_utf8((U8*)d, nextuv); |
e294cc5d JH |
3486 | #ifdef EBCDIC |
3487 | if (uv > 255 && !dorange) | |
3488 | native_range = FALSE; | |
3489 | #endif | |
2b9d42f0 NIS |
3490 | } |
3491 | else { | |
3492 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
3493 | } | |
02aa26ce NT |
3494 | } /* while loop to process each character */ |
3495 | ||
3496 | /* terminate the string and set up the sv */ | |
79072805 | 3497 | *d = '\0'; |
95a20fc0 | 3498 | SvCUR_set(sv, d - SvPVX_const(sv)); |
2b9d42f0 | 3499 | if (SvCUR(sv) >= SvLEN(sv)) |
d0063567 | 3500 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 3501 | |
79072805 | 3502 | SvPOK_on(sv); |
9f4817db | 3503 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
3504 | sv_recode_to_utf8(sv, PL_encoding); |
3505 | if (SvUTF8(sv)) | |
3506 | has_utf8 = TRUE; | |
9f4817db | 3507 | } |
2b9d42f0 | 3508 | if (has_utf8) { |
7e2040f0 | 3509 | SvUTF8_on(sv); |
2b9d42f0 | 3510 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 3511 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
3512 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
3513 | } | |
3514 | } | |
79072805 | 3515 | |
02aa26ce | 3516 | /* shrink the sv if we allocated more than we used */ |
79072805 | 3517 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1da4ca5f | 3518 | SvPV_shrink_to_cur(sv); |
79072805 | 3519 | } |
02aa26ce | 3520 | |
6154021b | 3521 | /* return the substring (via pl_yylval) only if we parsed anything */ |
3280af22 | 3522 | if (s > PL_bufptr) { |
eb0d8d16 NC |
3523 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) { |
3524 | const char *const key = PL_lex_inpat ? "qr" : "q"; | |
3525 | const STRLEN keylen = PL_lex_inpat ? 2 : 1; | |
3526 | const char *type; | |
3527 | STRLEN typelen; | |
3528 | ||
3529 | if (PL_lex_inwhat == OP_TRANS) { | |
3530 | type = "tr"; | |
3531 | typelen = 2; | |
3532 | } else if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) { | |
3533 | type = "s"; | |
3534 | typelen = 1; | |
3535 | } else { | |
3536 | type = "qq"; | |
3537 | typelen = 2; | |
3538 | } | |
3539 | ||
3540 | sv = S_new_constant(aTHX_ start, s - start, key, keylen, sv, NULL, | |
3541 | type, typelen); | |
3542 | } | |
6154021b | 3543 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 3544 | } else |
8990e307 | 3545 | SvREFCNT_dec(sv); |
79072805 LW |
3546 | return s; |
3547 | } | |
3548 | ||
ffb4593c NT |
3549 | /* S_intuit_more |
3550 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
3551 | * FALSE otherwise. | |
ffb4593c NT |
3552 | * |
3553 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
3554 | * | |
3555 | * ->[ and ->{ return TRUE | |
3556 | * { and [ outside a pattern are always subscripts, so return TRUE | |
3557 | * if we're outside a pattern and it's not { or [, then return FALSE | |
3558 | * if we're in a pattern and the first char is a { | |
3559 | * {4,5} (any digits around the comma) returns FALSE | |
3560 | * if we're in a pattern and the first char is a [ | |
3561 | * [] returns FALSE | |
3562 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
3563 | * character class or not. It has to deal with things like | |
3564 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
3565 | * anything else returns TRUE | |
3566 | */ | |
3567 | ||
9cbb5ea2 GS |
3568 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
3569 | ||
76e3520e | 3570 | STATIC int |
cea2e8a9 | 3571 | S_intuit_more(pTHX_ register char *s) |
79072805 | 3572 | { |
97aff369 | 3573 | dVAR; |
7918f24d NC |
3574 | |
3575 | PERL_ARGS_ASSERT_INTUIT_MORE; | |
3576 | ||
3280af22 | 3577 | if (PL_lex_brackets) |
79072805 LW |
3578 | return TRUE; |
3579 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
3580 | return TRUE; | |
3581 | if (*s != '{' && *s != '[') | |
3582 | return FALSE; | |
3280af22 | 3583 | if (!PL_lex_inpat) |
79072805 LW |
3584 | return TRUE; |
3585 | ||
3586 | /* In a pattern, so maybe we have {n,m}. */ | |
3587 | if (*s == '{') { | |
b3155d95 | 3588 | if (regcurly(s)) { |
79072805 | 3589 | return FALSE; |
b3155d95 | 3590 | } |
79072805 | 3591 | return TRUE; |
79072805 LW |
3592 | } |
3593 | ||
3594 | /* On the other hand, maybe we have a character class */ | |
3595 | ||
3596 | s++; | |
3597 | if (*s == ']' || *s == '^') | |
3598 | return FALSE; | |
3599 | else { | |
ffb4593c | 3600 | /* this is terrifying, and it works */ |
79072805 LW |
3601 | int weight = 2; /* let's weigh the evidence */ |
3602 | char seen[256]; | |
f27ffc4a | 3603 | unsigned char un_char = 255, last_un_char; |
9d4ba2ae | 3604 | const char * const send = strchr(s,']'); |
3280af22 | 3605 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
3606 | |
3607 | if (!send) /* has to be an expression */ | |
3608 | return TRUE; | |
3609 | ||
3610 | Zero(seen,256,char); | |
3611 | if (*s == '$') | |
3612 | weight -= 3; | |
3613 | else if (isDIGIT(*s)) { | |
3614 | if (s[1] != ']') { | |
3615 | if (isDIGIT(s[1]) && s[2] == ']') | |
3616 | weight -= 10; | |
3617 | } | |
3618 | else | |
3619 | weight -= 100; | |
3620 | } | |
3621 | for (; s < send; s++) { | |
3622 | last_un_char = un_char; | |
3623 | un_char = (unsigned char)*s; | |
3624 | switch (*s) { | |
3625 | case '@': | |
3626 | case '&': | |
3627 | case '$': | |
3628 | weight -= seen[un_char] * 10; | |
7e2040f0 | 3629 | if (isALNUM_lazy_if(s+1,UTF)) { |
90e5519e | 3630 | int len; |
8903cb82 | 3631 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
90e5519e NC |
3632 | len = (int)strlen(tmpbuf); |
3633 | if (len > 1 && gv_fetchpvn_flags(tmpbuf, len, 0, SVt_PV)) | |
79072805 LW |
3634 | weight -= 100; |
3635 | else | |
3636 | weight -= 10; | |
3637 | } | |
3638 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
3639 | strchr("[#!%*<>()-=",s[1])) { |
3640 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
3641 | weight -= 10; |
3642 | else | |
3643 | weight -= 1; | |
3644 | } | |
3645 | break; | |
3646 | case '\\': | |
3647 | un_char = 254; | |
3648 | if (s[1]) { | |
93a17b20 | 3649 | if (strchr("wds]",s[1])) |
79072805 | 3650 | weight += 100; |
10edeb5d | 3651 | else if (seen[(U8)'\''] || seen[(U8)'"']) |
79072805 | 3652 | weight += 1; |
93a17b20 | 3653 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
3654 | weight += 40; |
3655 | else if (isDIGIT(s[1])) { | |
3656 | weight += 40; | |
3657 | while (s[1] && isDIGIT(s[1])) | |
3658 | s++; | |
3659 | } | |
3660 | } | |
3661 | else | |
3662 | weight += 100; | |
3663 | break; | |
3664 | case '-': | |
3665 | if (s[1] == '\\') | |
3666 | weight += 50; | |
93a17b20 | 3667 | if (strchr("aA01! ",last_un_char)) |
79072805 | 3668 | weight += 30; |
93a17b20 | 3669 | if (strchr("zZ79~",s[1])) |
79072805 | 3670 | weight += 30; |
f27ffc4a GS |
3671 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
3672 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
3673 | break; |
3674 | default: | |
3792a11b NC |
3675 | if (!isALNUM(last_un_char) |
3676 | && !(last_un_char == '$' || last_un_char == '@' | |
3677 | || last_un_char == '&') | |
3678 | && isALPHA(*s) && s[1] && isALPHA(s[1])) { | |
79072805 LW |
3679 | char *d = tmpbuf; |
3680 | while (isALPHA(*s)) | |
3681 | *d++ = *s++; | |
3682 | *d = '\0'; | |
5458a98a | 3683 | if (keyword(tmpbuf, d - tmpbuf, 0)) |
79072805 LW |
3684 | weight -= 150; |
3685 | } | |
3686 | if (un_char == last_un_char + 1) | |
3687 | weight += 5; | |
3688 | weight -= seen[un_char]; | |
3689 | break; | |
3690 | } | |
3691 | seen[un_char]++; | |
3692 | } | |
3693 | if (weight >= 0) /* probably a character class */ | |
3694 | return FALSE; | |
3695 | } | |
3696 | ||
3697 | return TRUE; | |
3698 | } | |
ffed7fef | 3699 | |
ffb4593c NT |
3700 | /* |
3701 | * S_intuit_method | |
3702 | * | |
3703 | * Does all the checking to disambiguate | |
3704 | * foo bar | |
3705 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
3706 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
3707 | * | |
3708 | * First argument is the stuff after the first token, e.g. "bar". | |
3709 | * | |
3710 | * Not a method if bar is a filehandle. | |
3711 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
3712 | * Not a method if it's really "Foo $bar" | |
3713 | * Method if it's "foo $bar" | |
3714 | * Not a method if it's really "print foo $bar" | |
3715 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 3716 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 3717 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
3718 | * => |
3719 | */ | |
3720 | ||
76e3520e | 3721 | STATIC int |
62d55b22 | 3722 | S_intuit_method(pTHX_ char *start, GV *gv, CV *cv) |
a0d0e21e | 3723 | { |
97aff369 | 3724 | dVAR; |
a0d0e21e | 3725 | char *s = start + (*start == '$'); |
3280af22 | 3726 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3727 | STRLEN len; |
3728 | GV* indirgv; | |
5db06880 NC |
3729 | #ifdef PERL_MAD |
3730 | int soff; | |
3731 | #endif | |
a0d0e21e | 3732 | |
7918f24d NC |
3733 | PERL_ARGS_ASSERT_INTUIT_METHOD; |
3734 | ||
a0d0e21e | 3735 | if (gv) { |
62d55b22 | 3736 | if (SvTYPE(gv) == SVt_PVGV && GvIO(gv)) |
a0d0e21e | 3737 | return 0; |
62d55b22 NC |
3738 | if (cv) { |
3739 | if (SvPOK(cv)) { | |
3740 | const char *proto = SvPVX_const(cv); | |
3741 | if (proto) { | |
3742 | if (*proto == ';') | |
3743 | proto++; | |
3744 | if (*proto == '*') | |
3745 | return 0; | |
3746 | } | |
b6c543e3 IZ |
3747 | } |
3748 | } else | |
c35e046a | 3749 | gv = NULL; |
a0d0e21e | 3750 | } |
8903cb82 | 3751 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
3752 | /* start is the beginning of the possible filehandle/object, |
3753 | * and s is the end of it | |
3754 | * tmpbuf is a copy of it | |
3755 | */ | |
3756 | ||
a0d0e21e | 3757 | if (*start == '$') { |
3ef1310e RGS |
3758 | if (gv || PL_last_lop_op == OP_PRINT || PL_last_lop_op == OP_SAY || |
3759 | isUPPER(*PL_tokenbuf)) | |
a0d0e21e | 3760 | return 0; |
5db06880 NC |
3761 | #ifdef PERL_MAD |
3762 | len = start - SvPVX(PL_linestr); | |
3763 | #endif | |
29595ff2 | 3764 | s = PEEKSPACE(s); |
f0092767 | 3765 | #ifdef PERL_MAD |
5db06880 NC |
3766 | start = SvPVX(PL_linestr) + len; |
3767 | #endif | |
3280af22 NIS |
3768 | PL_bufptr = start; |
3769 | PL_expect = XREF; | |
a0d0e21e LW |
3770 | return *s == '(' ? FUNCMETH : METHOD; |
3771 | } | |
5458a98a | 3772 | if (!keyword(tmpbuf, len, 0)) { |
c3e0f903 GS |
3773 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
3774 | len -= 2; | |
3775 | tmpbuf[len] = '\0'; | |
5db06880 NC |
3776 | #ifdef PERL_MAD |
3777 | soff = s - SvPVX(PL_linestr); | |
3778 | #endif | |
c3e0f903 GS |
3779 | goto bare_package; |
3780 | } | |
90e5519e | 3781 | indirgv = gv_fetchpvn_flags(tmpbuf, len, 0, SVt_PVCV); |
8ebc5c01 | 3782 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
3783 | return 0; |
3784 | /* filehandle or package name makes it a method */ | |
da51bb9b | 3785 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, 0)) { |
5db06880 NC |
3786 | #ifdef PERL_MAD |
3787 | soff = s - SvPVX(PL_linestr); | |
3788 | #endif | |
29595ff2 | 3789 | s = PEEKSPACE(s); |
3280af22 | 3790 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
486ec47a | 3791 | return 0; /* no assumptions -- "=>" quotes bareword */ |
c3e0f903 | 3792 | bare_package: |
cd81e915 | 3793 | start_force(PL_curforce); |
9ded7720 | 3794 | NEXTVAL_NEXTTOKE.opval = (OP*)newSVOP(OP_CONST, 0, |
64142370 | 3795 | S_newSV_maybe_utf8(aTHX_ tmpbuf, len)); |
9ded7720 | 3796 | NEXTVAL_NEXTTOKE.opval->op_private = OPpCONST_BARE; |
5db06880 NC |
3797 | if (PL_madskills) |
3798 | curmad('X', newSVpvn(start,SvPVX(PL_linestr) + soff - start)); | |
3280af22 | 3799 | PL_expect = XTERM; |
a0d0e21e | 3800 | force_next(WORD); |
3280af22 | 3801 | PL_bufptr = s; |
5db06880 NC |
3802 | #ifdef PERL_MAD |
3803 | PL_bufptr = SvPVX(PL_linestr) + soff; /* restart before space */ | |
3804 | #endif | |
a0d0e21e LW |
3805 | return *s == '(' ? FUNCMETH : METHOD; |
3806 | } | |
3807 | } | |
3808 | return 0; | |
3809 | } | |
3810 | ||
16d20bd9 | 3811 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 3812 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
3813 | * Note that the filter function only applies to the current source file |
3814 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
3815 | * | |
3816 | * The datasv parameter (which may be NULL) can be used to pass | |
3817 | * private data to this instance of the filter. The filter function | |
3818 | * can recover the SV using the FILTER_DATA macro and use it to | |
3819 | * store private buffers and state information. | |
3820 | * | |
3821 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 3822 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 3823 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
3824 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
3825 | * private use must be set using malloc'd pointers. | |
3826 | */ | |
16d20bd9 AD |
3827 | |
3828 | SV * | |
864dbfa3 | 3829 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 3830 | { |
97aff369 | 3831 | dVAR; |
f4c556ac | 3832 | if (!funcp) |
a0714e2c | 3833 | return NULL; |
f4c556ac | 3834 | |
5486870f DM |
3835 | if (!PL_parser) |
3836 | return NULL; | |
3837 | ||
3280af22 NIS |
3838 | if (!PL_rsfp_filters) |
3839 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 3840 | if (!datasv) |
561b68a9 | 3841 | datasv = newSV(0); |
862a34c6 | 3842 | SvUPGRADE(datasv, SVt_PVIO); |
8141890a | 3843 | IoANY(datasv) = FPTR2DPTR(void *, funcp); /* stash funcp into spare field */ |
e0c19803 | 3844 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 3845 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
55662e27 JH |
3846 | FPTR2DPTR(void *, IoANY(datasv)), |
3847 | SvPV_nolen(datasv))); | |
3280af22 NIS |
3848 | av_unshift(PL_rsfp_filters, 1); |
3849 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
3850 | return(datasv); |
3851 | } | |
4e553d73 | 3852 | |
16d20bd9 AD |
3853 | |
3854 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 3855 | void |
864dbfa3 | 3856 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 3857 | { |
97aff369 | 3858 | dVAR; |
e0c19803 | 3859 | SV *datasv; |
24801a4b | 3860 | |
7918f24d NC |
3861 | PERL_ARGS_ASSERT_FILTER_DEL; |
3862 | ||
33073adb | 3863 | #ifdef DEBUGGING |
55662e27 JH |
3864 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", |
3865 | FPTR2DPTR(void*, funcp))); | |
33073adb | 3866 | #endif |
5486870f | 3867 | if (!PL_parser || !PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
3868 | return; |
3869 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 3870 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
8141890a | 3871 | if (IoANY(datasv) == FPTR2DPTR(void *, funcp)) { |
3280af22 | 3872 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 3873 | |
16d20bd9 AD |
3874 | return; |
3875 | } | |
3876 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 3877 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
3878 | } |
3879 | ||
3880 | ||
1de9afcd RGS |
3881 | /* Invoke the idxth filter function for the current rsfp. */ |
3882 | /* maxlen 0 = read one text line */ | |
16d20bd9 | 3883 | I32 |
864dbfa3 | 3884 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
a0d0e21e | 3885 | { |
97aff369 | 3886 | dVAR; |
16d20bd9 AD |
3887 | filter_t funcp; |
3888 | SV *datasv = NULL; | |
f482118e NC |
3889 | /* This API is bad. It should have been using unsigned int for maxlen. |
3890 | Not sure if we want to change the API, but if not we should sanity | |
3891 | check the value here. */ | |
39cd7a59 NC |
3892 | const unsigned int correct_length |
3893 | = maxlen < 0 ? | |
3894 | #ifdef PERL_MICRO | |
3895 | 0x7FFFFFFF | |
3896 | #else | |
3897 | INT_MAX | |
3898 | #endif | |
3899 | : maxlen; | |
e50aee73 | 3900 | |
7918f24d NC |
3901 | PERL_ARGS_ASSERT_FILTER_READ; |
3902 | ||
5486870f | 3903 | if (!PL_parser || !PL_rsfp_filters) |
16d20bd9 | 3904 | return -1; |
1de9afcd | 3905 | if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */ |
16d20bd9 AD |
3906 | /* Provide a default input filter to make life easy. */ |
3907 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
3908 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
3909 | "filter_read %d: from rsfp\n", idx)); | |
f482118e | 3910 | if (correct_length) { |
16d20bd9 AD |
3911 | /* Want a block */ |
3912 | int len ; | |
f54cb97a | 3913 | const int old_len = SvCUR(buf_sv); |
16d20bd9 AD |
3914 | |
3915 | /* ensure buf_sv is large enough */ | |
881d8f0a | 3916 | SvGROW(buf_sv, (STRLEN)(old_len + correct_length + 1)) ; |
f482118e NC |
3917 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, |
3918 | correct_length)) <= 0) { | |
3280af22 | 3919 | if (PerlIO_error(PL_rsfp)) |
37120919 AD |
3920 | return -1; /* error */ |
3921 | else | |
3922 | return 0 ; /* end of file */ | |
3923 | } | |
16d20bd9 | 3924 | SvCUR_set(buf_sv, old_len + len) ; |
881d8f0a | 3925 | SvPVX(buf_sv)[old_len + len] = '\0'; |
16d20bd9 AD |
3926 | } else { |
3927 | /* Want a line */ | |
3280af22 NIS |
3928 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
3929 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
3930 | return -1; /* error */ |
3931 | else | |
3932 | return 0 ; /* end of file */ | |
3933 | } | |
16d20bd9 AD |
3934 | } |
3935 | return SvCUR(buf_sv); | |
3936 | } | |
3937 | /* Skip this filter slot if filter has been deleted */ | |
1de9afcd | 3938 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) { |
f4c556ac GS |
3939 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
3940 | "filter_read %d: skipped (filter deleted)\n", | |
3941 | idx)); | |
f482118e | 3942 | return FILTER_READ(idx+1, buf_sv, correct_length); /* recurse */ |
16d20bd9 AD |
3943 | } |
3944 | /* Get function pointer hidden within datasv */ | |
8141890a | 3945 | funcp = DPTR2FPTR(filter_t, IoANY(datasv)); |
f4c556ac GS |
3946 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
3947 | "filter_read %d: via function %p (%s)\n", | |
ca0270c4 | 3948 | idx, (void*)datasv, SvPV_nolen_const(datasv))); |
16d20bd9 AD |
3949 | /* Call function. The function is expected to */ |
3950 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 3951 | /* Return: <0:error, =0:eof, >0:not eof */ |
f482118e | 3952 | return (*funcp)(aTHX_ idx, buf_sv, correct_length); |
16d20bd9 AD |
3953 | } |
3954 | ||
76e3520e | 3955 | STATIC char * |
5cc814fd | 3956 | S_filter_gets(pTHX_ register SV *sv, STRLEN append) |
16d20bd9 | 3957 | { |
97aff369 | 3958 | dVAR; |
7918f24d NC |
3959 | |
3960 | PERL_ARGS_ASSERT_FILTER_GETS; | |
3961 | ||
c39cd008 | 3962 | #ifdef PERL_CR_FILTER |
3280af22 | 3963 | if (!PL_rsfp_filters) { |
c39cd008 | 3964 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
3965 | } |
3966 | #endif | |
3280af22 | 3967 | if (PL_rsfp_filters) { |
55497cff | 3968 | if (!append) |
3969 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
3970 | if (FILTER_READ(0, sv, 0) > 0) |
3971 | return ( SvPVX(sv) ) ; | |
3972 | else | |
bd61b366 | 3973 | return NULL ; |
16d20bd9 | 3974 | } |
9d116dd7 | 3975 | else |
5cc814fd | 3976 | return (sv_gets(sv, PL_rsfp, append)); |
a0d0e21e LW |
3977 | } |
3978 | ||
01ec43d0 | 3979 | STATIC HV * |
9bde8eb0 | 3980 | S_find_in_my_stash(pTHX_ const char *pkgname, STRLEN len) |
def3634b | 3981 | { |
97aff369 | 3982 | dVAR; |
def3634b GS |
3983 | GV *gv; |
3984 | ||
7918f24d NC |
3985 | PERL_ARGS_ASSERT_FIND_IN_MY_STASH; |
3986 | ||
01ec43d0 | 3987 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
3988 | return PL_curstash; |
3989 | ||
3990 | if (len > 2 && | |
3991 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
90e5519e | 3992 | (gv = gv_fetchpvn_flags(pkgname, len, 0, SVt_PVHV))) |
01ec43d0 GS |
3993 | { |
3994 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
3995 | } |
3996 | ||
3997 | /* use constant CLASS => 'MyClass' */ | |
c35e046a AL |
3998 | gv = gv_fetchpvn_flags(pkgname, len, 0, SVt_PVCV); |
3999 | if (gv && GvCV(gv)) { | |
4000 | SV * const sv = cv_const_sv(GvCV(gv)); | |
4001 | if (sv) | |
9bde8eb0 | 4002 | pkgname = SvPV_const(sv, len); |
def3634b GS |
4003 | } |
4004 | ||
9bde8eb0 | 4005 | return gv_stashpvn(pkgname, len, 0); |
def3634b | 4006 | } |
a0d0e21e | 4007 | |
e3f73d4e RGS |
4008 | /* |
4009 | * S_readpipe_override | |
486ec47a | 4010 | * Check whether readpipe() is overridden, and generates the appropriate |
e3f73d4e RGS |
4011 | * optree, provided sublex_start() is called afterwards. |
4012 | */ | |
4013 | STATIC void | |
1d51329b | 4014 | S_readpipe_override(pTHX) |
e3f73d4e RGS |
4015 | { |
4016 | GV **gvp; | |
4017 | GV *gv_readpipe = gv_fetchpvs("readpipe", GV_NOTQUAL, SVt_PVCV); | |
6154021b | 4018 | pl_yylval.ival = OP_BACKTICK; |
e3f73d4e RGS |
4019 | if ((gv_readpipe |
4020 | && GvCVu(gv_readpipe) && GvIMPORTED_CV(gv_readpipe)) | |
4021 | || | |
4022 | ((gvp = (GV**)hv_fetchs(PL_globalstash, "readpipe", FALSE)) | |
d5e716f5 | 4023 | && (gv_readpipe = *gvp) && isGV_with_GP(gv_readpipe) |
e3f73d4e RGS |
4024 | && GvCVu(gv_readpipe) && GvIMPORTED_CV(gv_readpipe))) |
4025 | { | |
4026 | PL_lex_op = (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 4027 | op_append_elem(OP_LIST, |
e3f73d4e RGS |
4028 | newSVOP(OP_CONST, 0, &PL_sv_undef), /* value will be read later */ |
4029 | newCVREF(0, newGVOP(OP_GV, 0, gv_readpipe)))); | |
4030 | } | |
e3f73d4e RGS |
4031 | } |
4032 | ||
5db06880 NC |
4033 | #ifdef PERL_MAD |
4034 | /* | |
4035 | * Perl_madlex | |
4036 | * The intent of this yylex wrapper is to minimize the changes to the | |
4037 | * tokener when we aren't interested in collecting madprops. It remains | |
4038 | * to be seen how successful this strategy will be... | |
4039 | */ | |
4040 | ||
4041 | int | |
4042 | Perl_madlex(pTHX) | |
4043 | { | |
4044 | int optype; | |
4045 | char *s = PL_bufptr; | |
4046 | ||
cd81e915 NC |
4047 | /* make sure PL_thiswhite is initialized */ |
4048 | PL_thiswhite = 0; | |
4049 | PL_thismad = 0; | |
5db06880 | 4050 | |
cd81e915 | 4051 | /* just do what yylex would do on pending identifier; leave PL_thiswhite alone */ |
28ac2b49 | 4052 | if (PL_lex_state != LEX_KNOWNEXT && PL_pending_ident) |
5db06880 NC |
4053 | return S_pending_ident(aTHX); |
4054 | ||
4055 | /* previous token ate up our whitespace? */ | |
cd81e915 NC |
4056 | if (!PL_lasttoke && PL_nextwhite) { |
4057 | PL_thiswhite = PL_nextwhite; | |
4058 | PL_nextwhite = 0; | |
5db06880 NC |
4059 | } |
4060 | ||
4061 | /* isolate the token, and figure out where it is without whitespace */ | |
cd81e915 NC |
4062 | PL_realtokenstart = -1; |
4063 | PL_thistoken = 0; | |
5db06880 NC |
4064 | optype = yylex(); |
4065 | s = PL_bufptr; | |
cd81e915 | 4066 | assert(PL_curforce < 0); |
5db06880 | 4067 | |
cd81e915 NC |
4068 | if (!PL_thismad || PL_thismad->mad_key == '^') { /* not forced already? */ |
4069 | if (!PL_thistoken) { | |
4070 | if (PL_realtokenstart < 0 || !CopLINE(PL_curcop)) | |
6b29d1f5 | 4071 | PL_thistoken = newSVpvs(""); |
5db06880 | 4072 | else { |
c35e046a | 4073 | char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 | 4074 | PL_thistoken = newSVpvn(tstart, s - tstart); |
5db06880 NC |
4075 | } |
4076 | } | |
cd81e915 NC |
4077 | if (PL_thismad) /* install head */ |
4078 | CURMAD('X', PL_thistoken); | |
5db06880 NC |
4079 | } |
4080 | ||
4081 | /* last whitespace of a sublex? */ | |
cd81e915 NC |
4082 | if (optype == ')' && PL_endwhite) { |
4083 | CURMAD('X', PL_endwhite); | |
5db06880 NC |
4084 | } |
4085 | ||
cd81e915 | 4086 | if (!PL_thismad) { |
5db06880 NC |
4087 | |
4088 | /* if no whitespace and we're at EOF, bail. Otherwise fake EOF below. */ | |
cd81e915 NC |
4089 | if (!PL_thiswhite && !PL_endwhite && !optype) { |
4090 | sv_free(PL_thistoken); | |
4091 | PL_thistoken = 0; | |
5db06880 NC |
4092 | return 0; |
4093 | } | |
4094 | ||
4095 | /* put off final whitespace till peg */ | |
4096 | if (optype == ';' && !PL_rsfp) { | |
cd81e915 NC |
4097 | PL_nextwhite = PL_thiswhite; |
4098 | PL_thiswhite = 0; | |
5db06880 | 4099 | } |
cd81e915 NC |
4100 | else if (PL_thisopen) { |
4101 | CURMAD('q', PL_thisopen); | |
4102 | if (PL_thistoken) | |
4103 | sv_free(PL_thistoken); | |
4104 | PL_thistoken = 0; | |
5db06880 NC |
4105 | } |
4106 | else { | |
4107 | /* Store actual token text as madprop X */ | |
cd81e915 | 4108 | CURMAD('X', PL_thistoken); |
5db06880 NC |
4109 | } |
4110 | ||
cd81e915 | 4111 | if (PL_thiswhite) { |
5db06880 | 4112 | /* add preceding whitespace as madprop _ */ |
cd81e915 | 4113 | CURMAD('_', PL_thiswhite); |
5db06880 NC |
4114 | } |
4115 | ||
cd81e915 | 4116 | if (PL_thisstuff) { |
5db06880 | 4117 | /* add quoted material as madprop = */ |
cd81e915 | 4118 | CURMAD('=', PL_thisstuff); |
5db06880 NC |
4119 | } |
4120 | ||
cd81e915 | 4121 | if (PL_thisclose) { |
5db06880 | 4122 | /* add terminating quote as madprop Q */ |
cd81e915 | 4123 | CURMAD('Q', PL_thisclose); |
5db06880 NC |
4124 | } |
4125 | } | |
4126 | ||
4127 | /* special processing based on optype */ | |
4128 | ||
4129 | switch (optype) { | |
4130 | ||
4131 | /* opval doesn't need a TOKEN since it can already store mp */ | |
4132 | case WORD: | |
4133 | case METHOD: | |
4134 | case FUNCMETH: | |
4135 | case THING: | |
4136 | case PMFUNC: | |
4137 | case PRIVATEREF: | |
4138 | case FUNC0SUB: | |
4139 | case UNIOPSUB: | |
4140 | case LSTOPSUB: | |
6154021b RGS |
4141 | if (pl_yylval.opval) |
4142 | append_madprops(PL_thismad, pl_yylval.opval, 0); | |
cd81e915 | 4143 | PL_thismad = 0; |
5db06880 NC |
4144 | return optype; |
4145 | ||
4146 | /* fake EOF */ | |
4147 | case 0: | |
4148 | optype = PEG; | |
cd81e915 NC |
4149 | if (PL_endwhite) { |
4150 | addmad(newMADsv('p', PL_endwhite), &PL_thismad, 0); | |
4151 | PL_endwhite = 0; | |
5db06880 NC |
4152 | } |
4153 | break; | |
4154 | ||
4155 | case ']': | |
4156 | case '}': | |
cd81e915 | 4157 | if (PL_faketokens) |
5db06880 NC |
4158 | break; |
4159 | /* remember any fake bracket that lexer is about to discard */ | |
4160 | if (PL_lex_brackets == 1 && | |
4161 | ((expectation)PL_lex_brackstack[0] & XFAKEBRACK)) | |
4162 | { | |
4163 | s = PL_bufptr; | |
4164 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
4165 | s++; | |
4166 | if (*s == '}') { | |
cd81e915 NC |
4167 | PL_thiswhite = newSVpvn(PL_bufptr, ++s - PL_bufptr); |
4168 | addmad(newMADsv('#', PL_thiswhite), &PL_thismad, 0); | |
4169 | PL_thiswhite = 0; | |
5db06880 NC |
4170 | PL_bufptr = s - 1; |
4171 | break; /* don't bother looking for trailing comment */ | |
4172 | } | |
4173 | else | |
4174 | s = PL_bufptr; | |
4175 | } | |
4176 | if (optype == ']') | |
4177 | break; | |
4178 | /* FALLTHROUGH */ | |
4179 | ||
4180 | /* attach a trailing comment to its statement instead of next token */ | |
4181 | case ';': | |
cd81e915 | 4182 | if (PL_faketokens) |
5db06880 NC |
4183 | break; |
4184 | if (PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == optype) { | |
4185 | s = PL_bufptr; | |
4186 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
4187 | s++; | |
4188 | if (*s == '\n' || *s == '#') { | |
4189 | while (s < PL_bufend && *s != '\n') | |
4190 | s++; | |
4191 | if (s < PL_bufend) | |
4192 | s++; | |
cd81e915 NC |
4193 | PL_thiswhite = newSVpvn(PL_bufptr, s - PL_bufptr); |
4194 | addmad(newMADsv('#', PL_thiswhite), &PL_thismad, 0); | |
4195 | PL_thiswhite = 0; | |
5db06880 NC |
4196 | PL_bufptr = s; |
4197 | } | |
4198 | } | |
4199 | break; | |
4200 | ||
4201 | /* pval */ | |
4202 | case LABEL: | |
4203 | break; | |
4204 | ||
4205 | /* ival */ | |
4206 | default: | |
4207 | break; | |
4208 | ||
4209 | } | |
4210 | ||
4211 | /* Create new token struct. Note: opvals return early above. */ | |
6154021b | 4212 | pl_yylval.tkval = newTOKEN(optype, pl_yylval, PL_thismad); |
cd81e915 | 4213 | PL_thismad = 0; |
5db06880 NC |
4214 | return optype; |
4215 | } | |
4216 | #endif | |
4217 | ||
468aa647 | 4218 | STATIC char * |
cc6ed77d | 4219 | S_tokenize_use(pTHX_ int is_use, char *s) { |
97aff369 | 4220 | dVAR; |
7918f24d NC |
4221 | |
4222 | PERL_ARGS_ASSERT_TOKENIZE_USE; | |
4223 | ||
468aa647 RGS |
4224 | if (PL_expect != XSTATE) |
4225 | yyerror(Perl_form(aTHX_ "\"%s\" not allowed in expression", | |
4226 | is_use ? "use" : "no")); | |
29595ff2 | 4227 | s = SKIPSPACE1(s); |
468aa647 RGS |
4228 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
4229 | s = force_version(s, TRUE); | |
17c59fdf VP |
4230 | if (*s == ';' || *s == '}' |
4231 | || (s = SKIPSPACE1(s), (*s == ';' || *s == '}'))) { | |
cd81e915 | 4232 | start_force(PL_curforce); |
9ded7720 | 4233 | NEXTVAL_NEXTTOKE.opval = NULL; |
468aa647 RGS |
4234 | force_next(WORD); |
4235 | } | |
4236 | else if (*s == 'v') { | |
4237 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4238 | s = force_version(s, FALSE); | |
4239 | } | |
4240 | } | |
4241 | else { | |
4242 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4243 | s = force_version(s, FALSE); | |
4244 | } | |
6154021b | 4245 | pl_yylval.ival = is_use; |
468aa647 RGS |
4246 | return s; |
4247 | } | |
748a9306 | 4248 | #ifdef DEBUGGING |
27da23d5 | 4249 | static const char* const exp_name[] = |
09bef843 | 4250 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 4251 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 4252 | }; |
748a9306 | 4253 | #endif |
463ee0b2 | 4254 | |
361d9b55 Z |
4255 | #define word_takes_any_delimeter(p,l) S_word_takes_any_delimeter(p,l) |
4256 | STATIC bool | |
4257 | S_word_takes_any_delimeter(char *p, STRLEN len) | |
4258 | { | |
4259 | return (len == 1 && strchr("msyq", p[0])) || | |
4260 | (len == 2 && ( | |
4261 | (p[0] == 't' && p[1] == 'r') || | |
4262 | (p[0] == 'q' && strchr("qwxr", p[1])))); | |
4263 | } | |
4264 | ||
02aa26ce NT |
4265 | /* |
4266 | yylex | |
4267 | ||
4268 | Works out what to call the token just pulled out of the input | |
4269 | stream. The yacc parser takes care of taking the ops we return and | |
4270 | stitching them into a tree. | |
4271 | ||
4272 | Returns: | |
4273 | PRIVATEREF | |
4274 | ||
4275 | Structure: | |
4276 | if read an identifier | |
4277 | if we're in a my declaration | |
4278 | croak if they tried to say my($foo::bar) | |
4279 | build the ops for a my() declaration | |
4280 | if it's an access to a my() variable | |
4281 | are we in a sort block? | |
4282 | croak if my($a); $a <=> $b | |
4283 | build ops for access to a my() variable | |
4284 | if in a dq string, and they've said @foo and we can't find @foo | |
4285 | croak | |
4286 | build ops for a bareword | |
4287 | if we already built the token before, use it. | |
4288 | */ | |
4289 | ||
20141f0e | 4290 | |
dba4d153 JH |
4291 | #ifdef __SC__ |
4292 | #pragma segment Perl_yylex | |
4293 | #endif | |
dba4d153 | 4294 | int |
dba4d153 | 4295 | Perl_yylex(pTHX) |
20141f0e | 4296 | { |
97aff369 | 4297 | dVAR; |
3afc138a | 4298 | register char *s = PL_bufptr; |
378cc40b | 4299 | register char *d; |
463ee0b2 | 4300 | STRLEN len; |
aa7440fb | 4301 | bool bof = FALSE; |
580561a3 | 4302 | U32 fake_eof = 0; |
a687059c | 4303 | |
10edeb5d JH |
4304 | /* orig_keyword, gvp, and gv are initialized here because |
4305 | * jump to the label just_a_word_zero can bypass their | |
4306 | * initialization later. */ | |
4307 | I32 orig_keyword = 0; | |
4308 | GV *gv = NULL; | |
4309 | GV **gvp = NULL; | |
4310 | ||
bbf60fe6 | 4311 | DEBUG_T( { |
396482e1 | 4312 | SV* tmp = newSVpvs(""); |
b6007c36 DM |
4313 | PerlIO_printf(Perl_debug_log, "### %"IVdf":LEX_%s/X%s %s\n", |
4314 | (IV)CopLINE(PL_curcop), | |
4315 | lex_state_names[PL_lex_state], | |
4316 | exp_name[PL_expect], | |
4317 | pv_display(tmp, s, strlen(s), 0, 60)); | |
4318 | SvREFCNT_dec(tmp); | |
bbf60fe6 | 4319 | } ); |
02aa26ce | 4320 | /* check if there's an identifier for us to look at */ |
28ac2b49 | 4321 | if (PL_lex_state != LEX_KNOWNEXT && PL_pending_ident) |
bbf60fe6 | 4322 | return REPORT(S_pending_ident(aTHX)); |
bbce6d69 | 4323 | |
02aa26ce NT |
4324 | /* no identifier pending identification */ |
4325 | ||
3280af22 | 4326 | switch (PL_lex_state) { |
79072805 LW |
4327 | #ifdef COMMENTARY |
4328 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
4329 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
4330 | break; | |
4331 | #endif | |
4332 | ||
09bef843 | 4333 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 4334 | case LEX_KNOWNEXT: |
5db06880 NC |
4335 | #ifdef PERL_MAD |
4336 | PL_lasttoke--; | |
6154021b | 4337 | pl_yylval = PL_nexttoke[PL_lasttoke].next_val; |
5db06880 | 4338 | if (PL_madskills) { |
cd81e915 | 4339 | PL_thismad = PL_nexttoke[PL_lasttoke].next_mad; |
5db06880 | 4340 | PL_nexttoke[PL_lasttoke].next_mad = 0; |
cd81e915 | 4341 | if (PL_thismad && PL_thismad->mad_key == '_') { |
daba3364 | 4342 | PL_thiswhite = MUTABLE_SV(PL_thismad->mad_val); |
cd81e915 NC |
4343 | PL_thismad->mad_val = 0; |
4344 | mad_free(PL_thismad); | |
4345 | PL_thismad = 0; | |
5db06880 NC |
4346 | } |
4347 | } | |
4348 | if (!PL_lasttoke) { | |
4349 | PL_lex_state = PL_lex_defer; | |
4350 | PL_expect = PL_lex_expect; | |
4351 | PL_lex_defer = LEX_NORMAL; | |
4352 | if (!PL_nexttoke[PL_lasttoke].next_type) | |
4353 | return yylex(); | |
4354 | } | |
4355 | #else | |
3280af22 | 4356 | PL_nexttoke--; |
6154021b | 4357 | pl_yylval = PL_nextval[PL_nexttoke]; |
3280af22 NIS |
4358 | if (!PL_nexttoke) { |
4359 | PL_lex_state = PL_lex_defer; | |
4360 | PL_expect = PL_lex_expect; | |
4361 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 4362 | } |
5db06880 | 4363 | #endif |
a7aaec61 Z |
4364 | { |
4365 | I32 next_type; | |
5db06880 | 4366 | #ifdef PERL_MAD |
a7aaec61 | 4367 | next_type = PL_nexttoke[PL_lasttoke].next_type; |
5db06880 | 4368 | #else |
a7aaec61 | 4369 | next_type = PL_nexttype[PL_nexttoke]; |
5db06880 | 4370 | #endif |
78cdf107 Z |
4371 | if (next_type & (7<<24)) { |
4372 | if (next_type & (1<<24)) { | |
4373 | if (PL_lex_brackets > 100) | |
4374 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
4375 | PL_lex_brackstack[PL_lex_brackets++] = | |
9d8a3661 | 4376 | (char) ((next_type >> 16) & 0xff); |
78cdf107 Z |
4377 | } |
4378 | if (next_type & (2<<24)) | |
4379 | PL_lex_allbrackets++; | |
4380 | if (next_type & (4<<24)) | |
4381 | PL_lex_allbrackets--; | |
a7aaec61 Z |
4382 | next_type &= 0xffff; |
4383 | } | |
4384 | #ifdef PERL_MAD | |
4385 | /* FIXME - can these be merged? */ | |
4386 | return next_type; | |
4387 | #else | |
4388 | return REPORT(next_type); | |
4389 | #endif | |
4390 | } | |
79072805 | 4391 | |
02aa26ce | 4392 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 4393 | when we get here, PL_bufptr is at the \ |
02aa26ce | 4394 | */ |
79072805 LW |
4395 | case LEX_INTERPCASEMOD: |
4396 | #ifdef DEBUGGING | |
3280af22 | 4397 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 4398 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 4399 | #endif |
02aa26ce | 4400 | /* handle \E or end of string */ |
3280af22 | 4401 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
02aa26ce | 4402 | /* if at a \E */ |
3280af22 | 4403 | if (PL_lex_casemods) { |
f54cb97a | 4404 | const char oldmod = PL_lex_casestack[--PL_lex_casemods]; |
3280af22 | 4405 | PL_lex_casestack[PL_lex_casemods] = '\0'; |
02aa26ce | 4406 | |
3792a11b NC |
4407 | if (PL_bufptr != PL_bufend |
4408 | && (oldmod == 'L' || oldmod == 'U' || oldmod == 'Q')) { | |
3280af22 NIS |
4409 | PL_bufptr += 2; |
4410 | PL_lex_state = LEX_INTERPCONCAT; | |
5db06880 NC |
4411 | #ifdef PERL_MAD |
4412 | if (PL_madskills) | |
6b29d1f5 | 4413 | PL_thistoken = newSVpvs("\\E"); |
5db06880 | 4414 | #endif |
a0d0e21e | 4415 | } |
78cdf107 | 4416 | PL_lex_allbrackets--; |
bbf60fe6 | 4417 | return REPORT(')'); |
79072805 | 4418 | } |
5db06880 NC |
4419 | #ifdef PERL_MAD |
4420 | while (PL_bufptr != PL_bufend && | |
4421 | PL_bufptr[0] == '\\' && PL_bufptr[1] == 'E') { | |
cd81e915 | 4422 | if (!PL_thiswhite) |
6b29d1f5 | 4423 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 4424 | sv_catpvn(PL_thiswhite, PL_bufptr, 2); |
5db06880 NC |
4425 | PL_bufptr += 2; |
4426 | } | |
4427 | #else | |
3280af22 NIS |
4428 | if (PL_bufptr != PL_bufend) |
4429 | PL_bufptr += 2; | |
5db06880 | 4430 | #endif |
3280af22 | 4431 | PL_lex_state = LEX_INTERPCONCAT; |
cea2e8a9 | 4432 | return yylex(); |
79072805 LW |
4433 | } |
4434 | else { | |
607df283 | 4435 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
b6007c36 | 4436 | "### Saw case modifier\n"); }); |
3280af22 | 4437 | s = PL_bufptr + 1; |
6e909404 | 4438 | if (s[1] == '\\' && s[2] == 'E') { |
5db06880 | 4439 | #ifdef PERL_MAD |
cd81e915 | 4440 | if (!PL_thiswhite) |
6b29d1f5 | 4441 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 4442 | sv_catpvn(PL_thiswhite, PL_bufptr, 4); |
5db06880 | 4443 | #endif |
89122651 | 4444 | PL_bufptr = s + 3; |
6e909404 JH |
4445 | PL_lex_state = LEX_INTERPCONCAT; |
4446 | return yylex(); | |
a0d0e21e | 4447 | } |
6e909404 | 4448 | else { |
90771dc0 | 4449 | I32 tmp; |
5db06880 NC |
4450 | if (!PL_madskills) /* when just compiling don't need correct */ |
4451 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
4452 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
3792a11b | 4453 | if ((*s == 'L' || *s == 'U') && |
6e909404 JH |
4454 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) { |
4455 | PL_lex_casestack[--PL_lex_casemods] = '\0'; | |
78cdf107 | 4456 | PL_lex_allbrackets--; |
bbf60fe6 | 4457 | return REPORT(')'); |
6e909404 JH |
4458 | } |
4459 | if (PL_lex_casemods > 10) | |
4460 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
4461 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
4462 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
4463 | PL_lex_state = LEX_INTERPCONCAT; | |
cd81e915 | 4464 | start_force(PL_curforce); |
9ded7720 | 4465 | NEXTVAL_NEXTTOKE.ival = 0; |
78cdf107 | 4466 | force_next((2<<24)|'('); |
cd81e915 | 4467 | start_force(PL_curforce); |
6e909404 | 4468 | if (*s == 'l') |
9ded7720 | 4469 | NEXTVAL_NEXTTOKE.ival = OP_LCFIRST; |
6e909404 | 4470 | else if (*s == 'u') |
9ded7720 | 4471 | NEXTVAL_NEXTTOKE.ival = OP_UCFIRST; |
6e909404 | 4472 | else if (*s == 'L') |
9ded7720 | 4473 | NEXTVAL_NEXTTOKE.ival = OP_LC; |
6e909404 | 4474 | else if (*s == 'U') |
9ded7720 | 4475 | NEXTVAL_NEXTTOKE.ival = OP_UC; |
6e909404 | 4476 | else if (*s == 'Q') |
9ded7720 | 4477 | NEXTVAL_NEXTTOKE.ival = OP_QUOTEMETA; |
6e909404 JH |
4478 | else |
4479 | Perl_croak(aTHX_ "panic: yylex"); | |
5db06880 | 4480 | if (PL_madskills) { |
a5849ce5 NC |
4481 | SV* const tmpsv = newSVpvs("\\ "); |
4482 | /* replace the space with the character we want to escape | |
4483 | */ | |
4484 | SvPVX(tmpsv)[1] = *s; | |
5db06880 NC |
4485 | curmad('_', tmpsv); |
4486 | } | |
6e909404 | 4487 | PL_bufptr = s + 1; |
a0d0e21e | 4488 | } |
79072805 | 4489 | force_next(FUNC); |
3280af22 NIS |
4490 | if (PL_lex_starts) { |
4491 | s = PL_bufptr; | |
4492 | PL_lex_starts = 0; | |
5db06880 NC |
4493 | #ifdef PERL_MAD |
4494 | if (PL_madskills) { | |
cd81e915 NC |
4495 | if (PL_thistoken) |
4496 | sv_free(PL_thistoken); | |
6b29d1f5 | 4497 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4498 | } |
4499 | #endif | |
131b3ad0 DM |
4500 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4501 | if (PL_lex_casemods == 1 && PL_lex_inpat) | |
4502 | OPERATOR(','); | |
4503 | else | |
4504 | Aop(OP_CONCAT); | |
79072805 LW |
4505 | } |
4506 | else | |
cea2e8a9 | 4507 | return yylex(); |
79072805 LW |
4508 | } |
4509 | ||
55497cff | 4510 | case LEX_INTERPPUSH: |
bbf60fe6 | 4511 | return REPORT(sublex_push()); |
55497cff | 4512 | |
79072805 | 4513 | case LEX_INTERPSTART: |
3280af22 | 4514 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 4515 | return REPORT(sublex_done()); |
607df283 | 4516 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
b6007c36 | 4517 | "### Interpolated variable\n"); }); |
3280af22 NIS |
4518 | PL_expect = XTERM; |
4519 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
4520 | PL_lex_state = LEX_INTERPNORMAL; | |
4521 | if (PL_lex_dojoin) { | |
cd81e915 | 4522 | start_force(PL_curforce); |
9ded7720 | 4523 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 | 4524 | force_next(','); |
cd81e915 | 4525 | start_force(PL_curforce); |
a0d0e21e | 4526 | force_ident("\"", '$'); |
cd81e915 | 4527 | start_force(PL_curforce); |
9ded7720 | 4528 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 | 4529 | force_next('$'); |
cd81e915 | 4530 | start_force(PL_curforce); |
9ded7720 | 4531 | NEXTVAL_NEXTTOKE.ival = 0; |
78cdf107 | 4532 | force_next((2<<24)|'('); |
cd81e915 | 4533 | start_force(PL_curforce); |
9ded7720 | 4534 | NEXTVAL_NEXTTOKE.ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
4535 | force_next(FUNC); |
4536 | } | |
3280af22 NIS |
4537 | if (PL_lex_starts++) { |
4538 | s = PL_bufptr; | |
5db06880 NC |
4539 | #ifdef PERL_MAD |
4540 | if (PL_madskills) { | |
cd81e915 NC |
4541 | if (PL_thistoken) |
4542 | sv_free(PL_thistoken); | |
6b29d1f5 | 4543 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4544 | } |
4545 | #endif | |
131b3ad0 DM |
4546 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4547 | if (!PL_lex_casemods && PL_lex_inpat) | |
4548 | OPERATOR(','); | |
4549 | else | |
4550 | Aop(OP_CONCAT); | |
79072805 | 4551 | } |
cea2e8a9 | 4552 | return yylex(); |
79072805 LW |
4553 | |
4554 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
4555 | if (intuit_more(PL_bufptr)) { |
4556 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
4557 | break; |
4558 | } | |
4559 | /* FALL THROUGH */ | |
4560 | ||
4561 | case LEX_INTERPEND: | |
3280af22 NIS |
4562 | if (PL_lex_dojoin) { |
4563 | PL_lex_dojoin = FALSE; | |
4564 | PL_lex_state = LEX_INTERPCONCAT; | |
5db06880 NC |
4565 | #ifdef PERL_MAD |
4566 | if (PL_madskills) { | |
cd81e915 NC |
4567 | if (PL_thistoken) |
4568 | sv_free(PL_thistoken); | |
6b29d1f5 | 4569 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4570 | } |
4571 | #endif | |
78cdf107 | 4572 | PL_lex_allbrackets--; |
bbf60fe6 | 4573 | return REPORT(')'); |
79072805 | 4574 | } |
43a16006 | 4575 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 4576 | && SvEVALED(PL_lex_repl)) |
43a16006 | 4577 | { |
e9fa98b2 | 4578 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 4579 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
a0714e2c | 4580 | PL_lex_repl = NULL; |
e9fa98b2 | 4581 | } |
79072805 LW |
4582 | /* FALLTHROUGH */ |
4583 | case LEX_INTERPCONCAT: | |
4584 | #ifdef DEBUGGING | |
3280af22 | 4585 | if (PL_lex_brackets) |
cea2e8a9 | 4586 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 4587 | #endif |
3280af22 | 4588 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 4589 | return REPORT(sublex_done()); |
79072805 | 4590 | |
3280af22 NIS |
4591 | if (SvIVX(PL_linestr) == '\'') { |
4592 | SV *sv = newSVsv(PL_linestr); | |
4593 | if (!PL_lex_inpat) | |
76e3520e | 4594 | sv = tokeq(sv); |
3280af22 | 4595 | else if ( PL_hints & HINT_NEW_RE ) |
eb0d8d16 | 4596 | sv = new_constant(NULL, 0, "qr", sv, sv, "q", 1); |
6154021b | 4597 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 4598 | s = PL_bufend; |
79072805 LW |
4599 | } |
4600 | else { | |
3280af22 | 4601 | s = scan_const(PL_bufptr); |
79072805 | 4602 | if (*s == '\\') |
3280af22 | 4603 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 4604 | else |
3280af22 | 4605 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
4606 | } |
4607 | ||
3280af22 | 4608 | if (s != PL_bufptr) { |
cd81e915 | 4609 | start_force(PL_curforce); |
5db06880 NC |
4610 | if (PL_madskills) { |
4611 | curmad('X', newSVpvn(PL_bufptr,s-PL_bufptr)); | |
4612 | } | |
6154021b | 4613 | NEXTVAL_NEXTTOKE = pl_yylval; |
3280af22 | 4614 | PL_expect = XTERM; |
79072805 | 4615 | force_next(THING); |
131b3ad0 | 4616 | if (PL_lex_starts++) { |
5db06880 NC |
4617 | #ifdef PERL_MAD |
4618 | if (PL_madskills) { | |
cd81e915 NC |
4619 | if (PL_thistoken) |
4620 | sv_free(PL_thistoken); | |
6b29d1f5 | 4621 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4622 | } |
4623 | #endif | |
131b3ad0 DM |
4624 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4625 | if (!PL_lex_casemods && PL_lex_inpat) | |
4626 | OPERATOR(','); | |
4627 | else | |
4628 | Aop(OP_CONCAT); | |
4629 | } | |
79072805 | 4630 | else { |
3280af22 | 4631 | PL_bufptr = s; |
cea2e8a9 | 4632 | return yylex(); |
79072805 LW |
4633 | } |
4634 | } | |
4635 | ||
cea2e8a9 | 4636 | return yylex(); |
a0d0e21e | 4637 | case LEX_FORMLINE: |
3280af22 NIS |
4638 | PL_lex_state = LEX_NORMAL; |
4639 | s = scan_formline(PL_bufptr); | |
4640 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
4641 | goto rightbracket; |
4642 | OPERATOR(';'); | |
79072805 LW |
4643 | } |
4644 | ||
3280af22 NIS |
4645 | s = PL_bufptr; |
4646 | PL_oldoldbufptr = PL_oldbufptr; | |
4647 | PL_oldbufptr = s; | |
463ee0b2 LW |
4648 | |
4649 | retry: | |
5db06880 | 4650 | #ifdef PERL_MAD |
cd81e915 NC |
4651 | if (PL_thistoken) { |
4652 | sv_free(PL_thistoken); | |
4653 | PL_thistoken = 0; | |
5db06880 | 4654 | } |
cd81e915 | 4655 | PL_realtokenstart = s - SvPVX(PL_linestr); /* assume but undo on ws */ |
5db06880 | 4656 | #endif |
378cc40b LW |
4657 | switch (*s) { |
4658 | default: | |
7e2040f0 | 4659 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 4660 | goto keylookup; |
b1fc3636 CJ |
4661 | { |
4662 | unsigned char c = *s; | |
4663 | len = UTF ? Perl_utf8_length(aTHX_ (U8 *) PL_linestart, (U8 *) s) : (STRLEN) (s - PL_linestart); | |
4664 | if (len > UNRECOGNIZED_PRECEDE_COUNT) { | |
4665 | d = UTF ? (char *) Perl_utf8_hop(aTHX_ (U8 *) s, -UNRECOGNIZED_PRECEDE_COUNT) : s - UNRECOGNIZED_PRECEDE_COUNT; | |
4666 | } else { | |
4667 | d = PL_linestart; | |
4668 | } | |
4669 | *s = '\0'; | |
4670 | Perl_croak(aTHX_ "Unrecognized character \\x%02X; marked by <-- HERE after %s<-- HERE near column %d", c, d, (int) len + 1); | |
4671 | } | |
e929a76b LW |
4672 | case 4: |
4673 | case 26: | |
4674 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 4675 | case 0: |
5db06880 NC |
4676 | #ifdef PERL_MAD |
4677 | if (PL_madskills) | |
cd81e915 | 4678 | PL_faketokens = 0; |
5db06880 | 4679 | #endif |
3280af22 NIS |
4680 | if (!PL_rsfp) { |
4681 | PL_last_uni = 0; | |
4682 | PL_last_lop = 0; | |
a7aaec61 Z |
4683 | if (PL_lex_brackets && |
4684 | PL_lex_brackstack[PL_lex_brackets-1] != XFAKEEOF) { | |
10edeb5d JH |
4685 | yyerror((const char *) |
4686 | (PL_lex_formbrack | |
4687 | ? "Format not terminated" | |
4688 | : "Missing right curly or square bracket")); | |
c5ee2135 | 4689 | } |
4e553d73 | 4690 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 4691 | "### Tokener got EOF\n"); |
5f80b19c | 4692 | } ); |
79072805 | 4693 | TOKEN(0); |
463ee0b2 | 4694 | } |
3280af22 | 4695 | if (s++ < PL_bufend) |
a687059c | 4696 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
4697 | PL_last_uni = 0; |
4698 | PL_last_lop = 0; | |
4699 | if (!PL_in_eval && !PL_preambled) { | |
4700 | PL_preambled = TRUE; | |
5db06880 NC |
4701 | #ifdef PERL_MAD |
4702 | if (PL_madskills) | |
cd81e915 | 4703 | PL_faketokens = 1; |
5db06880 | 4704 | #endif |
5ab7ff98 NC |
4705 | if (PL_perldb) { |
4706 | /* Generate a string of Perl code to load the debugger. | |
4707 | * If PERL5DB is set, it will return the contents of that, | |
4708 | * otherwise a compile-time require of perl5db.pl. */ | |
4709 | ||
4710 | const char * const pdb = PerlEnv_getenv("PERL5DB"); | |
4711 | ||
4712 | if (pdb) { | |
4713 | sv_setpv(PL_linestr, pdb); | |
4714 | sv_catpvs(PL_linestr,";"); | |
4715 | } else { | |
4716 | SETERRNO(0,SS_NORMAL); | |
4717 | sv_setpvs(PL_linestr, "BEGIN { require 'perl5db.pl' };"); | |
4718 | } | |
4719 | } else | |
4720 | sv_setpvs(PL_linestr,""); | |
c62eb204 NC |
4721 | if (PL_preambleav) { |
4722 | SV **svp = AvARRAY(PL_preambleav); | |
4723 | SV **const end = svp + AvFILLp(PL_preambleav); | |
4724 | while(svp <= end) { | |
4725 | sv_catsv(PL_linestr, *svp); | |
4726 | ++svp; | |
396482e1 | 4727 | sv_catpvs(PL_linestr, ";"); |
91b7def8 | 4728 | } |
daba3364 | 4729 | sv_free(MUTABLE_SV(PL_preambleav)); |
3280af22 | 4730 | PL_preambleav = NULL; |
91b7def8 | 4731 | } |
9f639728 FR |
4732 | if (PL_minus_E) |
4733 | sv_catpvs(PL_linestr, | |
4734 | "use feature ':5." STRINGIFY(PERL_VERSION) "';"); | |
3280af22 | 4735 | if (PL_minus_n || PL_minus_p) { |
f0e67a1d | 4736 | sv_catpvs(PL_linestr, "LINE: while (<>) {"/*}*/); |
3280af22 | 4737 | if (PL_minus_l) |
396482e1 | 4738 | sv_catpvs(PL_linestr,"chomp;"); |
3280af22 | 4739 | if (PL_minus_a) { |
3280af22 | 4740 | if (PL_minus_F) { |
3792a11b NC |
4741 | if ((*PL_splitstr == '/' || *PL_splitstr == '\'' |
4742 | || *PL_splitstr == '"') | |
3280af22 | 4743 | && strchr(PL_splitstr + 1, *PL_splitstr)) |
3db68c4c | 4744 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 4745 | else { |
c8ef6a4b NC |
4746 | /* "q\0${splitstr}\0" is legal perl. Yes, even NUL |
4747 | bytes can be used as quoting characters. :-) */ | |
dd374669 | 4748 | const char *splits = PL_splitstr; |
91d456ae | 4749 | sv_catpvs(PL_linestr, "our @F=split(q\0"); |
48c4c863 NC |
4750 | do { |
4751 | /* Need to \ \s */ | |
dd374669 AL |
4752 | if (*splits == '\\') |
4753 | sv_catpvn(PL_linestr, splits, 1); | |
4754 | sv_catpvn(PL_linestr, splits, 1); | |
4755 | } while (*splits++); | |
48c4c863 NC |
4756 | /* This loop will embed the trailing NUL of |
4757 | PL_linestr as the last thing it does before | |
4758 | terminating. */ | |
396482e1 | 4759 | sv_catpvs(PL_linestr, ");"); |
54310121 | 4760 | } |
2304df62 AD |
4761 | } |
4762 | else | |
396482e1 | 4763 | sv_catpvs(PL_linestr,"our @F=split(' ');"); |
2304df62 | 4764 | } |
79072805 | 4765 | } |
396482e1 | 4766 | sv_catpvs(PL_linestr, "\n"); |
3280af22 NIS |
4767 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
4768 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 4769 | PL_last_lop = PL_last_uni = NULL; |
65269a95 | 4770 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) |
5fa550fb | 4771 | update_debugger_info(PL_linestr, NULL, 0); |
79072805 | 4772 | goto retry; |
a687059c | 4773 | } |
e929a76b | 4774 | do { |
580561a3 Z |
4775 | fake_eof = 0; |
4776 | bof = PL_rsfp ? TRUE : FALSE; | |
f0e67a1d | 4777 | if (0) { |
7e28d3af | 4778 | fake_eof: |
f0e67a1d Z |
4779 | fake_eof = LEX_FAKE_EOF; |
4780 | } | |
4781 | PL_bufptr = PL_bufend; | |
17cc9359 | 4782 | CopLINE_inc(PL_curcop); |
f0e67a1d | 4783 | if (!lex_next_chunk(fake_eof)) { |
17cc9359 | 4784 | CopLINE_dec(PL_curcop); |
f0e67a1d Z |
4785 | s = PL_bufptr; |
4786 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
4787 | } | |
17cc9359 | 4788 | CopLINE_dec(PL_curcop); |
5db06880 | 4789 | #ifdef PERL_MAD |
f0e67a1d | 4790 | if (!PL_rsfp) |
cd81e915 | 4791 | PL_realtokenstart = -1; |
5db06880 | 4792 | #endif |
f0e67a1d | 4793 | s = PL_bufptr; |
7aa207d6 JH |
4794 | /* If it looks like the start of a BOM or raw UTF-16, |
4795 | * check if it in fact is. */ | |
580561a3 | 4796 | if (bof && PL_rsfp && |
7aa207d6 JH |
4797 | (*s == 0 || |
4798 | *(U8*)s == 0xEF || | |
4799 | *(U8*)s >= 0xFE || | |
4800 | s[1] == 0)) { | |
879bc93b DM |
4801 | Off_t offset = (IV)PerlIO_tell(PL_rsfp); |
4802 | bof = (offset == (Off_t)SvCUR(PL_linestr)); | |
6d510155 JD |
4803 | #if defined(PERLIO_USING_CRLF) && defined(PERL_TEXTMODE_SCRIPTS) |
4804 | /* offset may include swallowed CR */ | |
4805 | if (!bof) | |
879bc93b | 4806 | bof = (offset == (Off_t)SvCUR(PL_linestr)+1); |
6d510155 | 4807 | #endif |
7e28d3af | 4808 | if (bof) { |
3280af22 | 4809 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 4810 | s = swallow_bom((U8*)s); |
e929a76b | 4811 | } |
378cc40b | 4812 | } |
737c24fc | 4813 | if (PL_parser->in_pod) { |
a0d0e21e | 4814 | /* Incest with pod. */ |
5db06880 NC |
4815 | #ifdef PERL_MAD |
4816 | if (PL_madskills) | |
cd81e915 | 4817 | sv_catsv(PL_thiswhite, PL_linestr); |
5db06880 | 4818 | #endif |
01a57ef7 | 4819 | if (*s == '=' && strnEQ(s, "=cut", 4) && !isALPHA(s[4])) { |
76f68e9b | 4820 | sv_setpvs(PL_linestr, ""); |
3280af22 NIS |
4821 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
4822 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 4823 | PL_last_lop = PL_last_uni = NULL; |
737c24fc | 4824 | PL_parser->in_pod = 0; |
a0d0e21e | 4825 | } |
4e553d73 | 4826 | } |
85613cab Z |
4827 | if (PL_rsfp) |
4828 | incline(s); | |
737c24fc | 4829 | } while (PL_parser->in_pod); |
3280af22 | 4830 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; |
3280af22 | 4831 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
bd61b366 | 4832 | PL_last_lop = PL_last_uni = NULL; |
57843af0 | 4833 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 4834 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 4835 | s++; |
a0d0e21e | 4836 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 4837 | s++; |
5db06880 NC |
4838 | #ifdef PERL_MAD |
4839 | if (PL_madskills) | |
cd81e915 | 4840 | PL_thiswhite = newSVpvn(PL_linestart, s - PL_linestart); |
5db06880 | 4841 | #endif |
bd61b366 | 4842 | d = NULL; |
3280af22 | 4843 | if (!PL_in_eval) { |
44a8e56a | 4844 | if (*s == '#' && *(s+1) == '!') |
4845 | d = s + 2; | |
4846 | #ifdef ALTERNATE_SHEBANG | |
4847 | else { | |
bfed75c6 | 4848 | static char const as[] = ALTERNATE_SHEBANG; |
44a8e56a | 4849 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) |
4850 | d = s + (sizeof(as) - 1); | |
4851 | } | |
4852 | #endif /* ALTERNATE_SHEBANG */ | |
4853 | } | |
4854 | if (d) { | |
b8378b72 | 4855 | char *ipath; |
774d564b | 4856 | char *ipathend; |
b8378b72 | 4857 | |
774d564b | 4858 | while (isSPACE(*d)) |
b8378b72 CS |
4859 | d++; |
4860 | ipath = d; | |
774d564b | 4861 | while (*d && !isSPACE(*d)) |
4862 | d++; | |
4863 | ipathend = d; | |
4864 | ||
4865 | #ifdef ARG_ZERO_IS_SCRIPT | |
4866 | if (ipathend > ipath) { | |
4867 | /* | |
4868 | * HP-UX (at least) sets argv[0] to the script name, | |
4869 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
4870 | * at least, set argv[0] to the basename of the Perl | |
4871 | * interpreter. So, having found "#!", we'll set it right. | |
4872 | */ | |
fafc274c NC |
4873 | SV * const x = GvSV(gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, |
4874 | SVt_PV)); /* $^X */ | |
774d564b | 4875 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 4876 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 4877 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 4878 | SvSETMAGIC(x); |
4879 | } | |
556c1dec JH |
4880 | else { |
4881 | STRLEN blen; | |
4882 | STRLEN llen; | |
cfd0369c | 4883 | const char *bstart = SvPV_const(CopFILESV(PL_curcop),blen); |
9d4ba2ae | 4884 | const char * const lstart = SvPV_const(x,llen); |
556c1dec JH |
4885 | if (llen < blen) { |
4886 | bstart += blen - llen; | |
4887 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
4888 | sv_setpvn(x, ipath, ipathend - ipath); | |
4889 | SvSETMAGIC(x); | |
4890 | } | |
4891 | } | |
4892 | } | |
774d564b | 4893 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 4894 | } |
774d564b | 4895 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
4896 | |
4897 | /* | |
4898 | * Look for options. | |
4899 | */ | |
748a9306 | 4900 | d = instr(s,"perl -"); |
84e30d1a | 4901 | if (!d) { |
748a9306 | 4902 | d = instr(s,"perl"); |
84e30d1a GS |
4903 | #if defined(DOSISH) |
4904 | /* avoid getting into infinite loops when shebang | |
4905 | * line contains "Perl" rather than "perl" */ | |
4906 | if (!d) { | |
4907 | for (d = ipathend-4; d >= ipath; --d) { | |
4908 | if ((*d == 'p' || *d == 'P') | |
4909 | && !ibcmp(d, "perl", 4)) | |
4910 | { | |
4911 | break; | |
4912 | } | |
4913 | } | |
4914 | if (d < ipath) | |
bd61b366 | 4915 | d = NULL; |
84e30d1a GS |
4916 | } |
4917 | #endif | |
4918 | } | |
44a8e56a | 4919 | #ifdef ALTERNATE_SHEBANG |
4920 | /* | |
4921 | * If the ALTERNATE_SHEBANG on this system starts with a | |
4922 | * character that can be part of a Perl expression, then if | |
4923 | * we see it but not "perl", we're probably looking at the | |
4924 | * start of Perl code, not a request to hand off to some | |
4925 | * other interpreter. Similarly, if "perl" is there, but | |
4926 | * not in the first 'word' of the line, we assume the line | |
4927 | * contains the start of the Perl program. | |
44a8e56a | 4928 | */ |
4929 | if (d && *s != '#') { | |
f54cb97a | 4930 | const char *c = ipath; |
44a8e56a | 4931 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
4932 | c++; | |
4933 | if (c < d) | |
bd61b366 | 4934 | d = NULL; /* "perl" not in first word; ignore */ |
44a8e56a | 4935 | else |
4936 | *s = '#'; /* Don't try to parse shebang line */ | |
4937 | } | |
774d564b | 4938 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 4939 | if (!d && |
44a8e56a | 4940 | *s == '#' && |
774d564b | 4941 | ipathend > ipath && |
3280af22 | 4942 | !PL_minus_c && |
748a9306 | 4943 | !instr(s,"indir") && |
3280af22 | 4944 | instr(PL_origargv[0],"perl")) |
748a9306 | 4945 | { |
27da23d5 | 4946 | dVAR; |
9f68db38 | 4947 | char **newargv; |
9f68db38 | 4948 | |
774d564b | 4949 | *ipathend = '\0'; |
4950 | s = ipathend + 1; | |
3280af22 | 4951 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 4952 | s++; |
3280af22 | 4953 | if (s < PL_bufend) { |
d85f917e | 4954 | Newx(newargv,PL_origargc+3,char*); |
9f68db38 | 4955 | newargv[1] = s; |
3280af22 | 4956 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
4957 | s++; |
4958 | *s = '\0'; | |
3280af22 | 4959 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
4960 | } |
4961 | else | |
3280af22 | 4962 | newargv = PL_origargv; |
774d564b | 4963 | newargv[0] = ipath; |
b35112e7 | 4964 | PERL_FPU_PRE_EXEC |
b4748376 | 4965 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 4966 | PERL_FPU_POST_EXEC |
cea2e8a9 | 4967 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 4968 | } |
748a9306 | 4969 | if (d) { |
c35e046a AL |
4970 | while (*d && !isSPACE(*d)) |
4971 | d++; | |
4972 | while (SPACE_OR_TAB(*d)) | |
4973 | d++; | |
748a9306 LW |
4974 | |
4975 | if (*d++ == '-') { | |
f54cb97a | 4976 | const bool switches_done = PL_doswitches; |
fb993905 GA |
4977 | const U32 oldpdb = PL_perldb; |
4978 | const bool oldn = PL_minus_n; | |
4979 | const bool oldp = PL_minus_p; | |
c7030b81 | 4980 | const char *d1 = d; |
fb993905 | 4981 | |
8cc95fdb | 4982 | do { |
4ba71d51 FC |
4983 | bool baduni = FALSE; |
4984 | if (*d1 == 'C') { | |
bd0ab00d NC |
4985 | const char *d2 = d1 + 1; |
4986 | if (parse_unicode_opts((const char **)&d2) | |
4987 | != PL_unicode) | |
4988 | baduni = TRUE; | |
4ba71d51 FC |
4989 | } |
4990 | if (baduni || *d1 == 'M' || *d1 == 'm') { | |
c7030b81 NC |
4991 | const char * const m = d1; |
4992 | while (*d1 && !isSPACE(*d1)) | |
4993 | d1++; | |
cea2e8a9 | 4994 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
c7030b81 | 4995 | (int)(d1 - m), m); |
8cc95fdb | 4996 | } |
c7030b81 NC |
4997 | d1 = moreswitches(d1); |
4998 | } while (d1); | |
f0b2cf55 YST |
4999 | if (PL_doswitches && !switches_done) { |
5000 | int argc = PL_origargc; | |
5001 | char **argv = PL_origargv; | |
5002 | do { | |
5003 | argc--,argv++; | |
5004 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
5005 | init_argv_symbols(argc,argv); | |
5006 | } | |
65269a95 | 5007 | if (((PERLDB_LINE || PERLDB_SAVESRC) && !oldpdb) || |
155aba94 | 5008 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) |
b084f20b | 5009 | /* if we have already added "LINE: while (<>) {", |
5010 | we must not do it again */ | |
748a9306 | 5011 | { |
76f68e9b | 5012 | sv_setpvs(PL_linestr, ""); |
3280af22 NIS |
5013 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
5014 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 5015 | PL_last_lop = PL_last_uni = NULL; |
3280af22 | 5016 | PL_preambled = FALSE; |
65269a95 | 5017 | if (PERLDB_LINE || PERLDB_SAVESRC) |
3280af22 | 5018 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
5019 | goto retry; |
5020 | } | |
a0d0e21e | 5021 | } |
79072805 | 5022 | } |
9f68db38 | 5023 | } |
79072805 | 5024 | } |
3280af22 NIS |
5025 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
5026 | PL_bufptr = s; | |
5027 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 5028 | return yylex(); |
ae986130 | 5029 | } |
378cc40b | 5030 | goto retry; |
4fdae800 | 5031 | case '\r': |
6a27c188 | 5032 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 5033 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 5034 | Perl_croak(aTHX_ |
cc507455 | 5035 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 5036 | #endif |
4fdae800 | 5037 | case ' ': case '\t': case '\f': case 013: |
5db06880 | 5038 | #ifdef PERL_MAD |
cd81e915 | 5039 | PL_realtokenstart = -1; |
ac372eb8 RD |
5040 | if (!PL_thiswhite) |
5041 | PL_thiswhite = newSVpvs(""); | |
5042 | sv_catpvn(PL_thiswhite, s, 1); | |
5db06880 | 5043 | #endif |
ac372eb8 | 5044 | s++; |
378cc40b | 5045 | goto retry; |
378cc40b | 5046 | case '#': |
e929a76b | 5047 | case '\n': |
5db06880 | 5048 | #ifdef PERL_MAD |
cd81e915 | 5049 | PL_realtokenstart = -1; |
5db06880 | 5050 | if (PL_madskills) |
cd81e915 | 5051 | PL_faketokens = 0; |
5db06880 | 5052 | #endif |
3280af22 | 5053 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
5054 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
5055 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
5056 | CopLINE_dec(PL_curcop); | |
5057 | incline(s); | |
5058 | } | |
5db06880 NC |
5059 | if (PL_madskills && !PL_lex_formbrack && !PL_in_eval) { |
5060 | s = SKIPSPACE0(s); | |
5061 | if (!PL_in_eval || PL_rsfp) | |
5062 | incline(s); | |
5063 | } | |
5064 | else { | |
5065 | d = s; | |
5066 | while (d < PL_bufend && *d != '\n') | |
5067 | d++; | |
5068 | if (d < PL_bufend) | |
5069 | d++; | |
5070 | else if (d > PL_bufend) /* Found by Ilya: feed random input to Perl. */ | |
5071 | Perl_croak(aTHX_ "panic: input overflow"); | |
5072 | #ifdef PERL_MAD | |
5073 | if (PL_madskills) | |
cd81e915 | 5074 | PL_thiswhite = newSVpvn(s, d - s); |
5db06880 NC |
5075 | #endif |
5076 | s = d; | |
5077 | incline(s); | |
5078 | } | |
3280af22 NIS |
5079 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
5080 | PL_bufptr = s; | |
5081 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 5082 | return yylex(); |
a687059c | 5083 | } |
378cc40b | 5084 | } |
a687059c | 5085 | else { |
5db06880 NC |
5086 | #ifdef PERL_MAD |
5087 | if (PL_madskills && CopLINE(PL_curcop) >= 1 && !PL_lex_formbrack) { | |
5088 | if (CopLINE(PL_curcop) == 1 && s[0] == '#' && s[1] == '!') { | |
cd81e915 | 5089 | PL_faketokens = 0; |
5db06880 NC |
5090 | s = SKIPSPACE0(s); |
5091 | TOKEN(PEG); /* make sure any #! line is accessible */ | |
5092 | } | |
5093 | s = SKIPSPACE0(s); | |
5094 | } | |
5095 | else { | |
5096 | /* if (PL_madskills && PL_lex_formbrack) { */ | |
5097 | d = s; | |
5098 | while (d < PL_bufend && *d != '\n') | |
5099 | d++; | |
5100 | if (d < PL_bufend) | |
5101 | d++; | |
5102 | else if (d > PL_bufend) /* Found by Ilya: feed random input to Perl. */ | |
5103 | Perl_croak(aTHX_ "panic: input overflow"); | |
5104 | if (PL_madskills && CopLINE(PL_curcop) >= 1) { | |
cd81e915 | 5105 | if (!PL_thiswhite) |
6b29d1f5 | 5106 | PL_thiswhite = newSVpvs(""); |
5db06880 | 5107 | if (CopLINE(PL_curcop) == 1) { |
76f68e9b | 5108 | sv_setpvs(PL_thiswhite, ""); |
cd81e915 | 5109 | PL_faketokens = 0; |
5db06880 | 5110 | } |
cd81e915 | 5111 | sv_catpvn(PL_thiswhite, s, d - s); |
5db06880 NC |
5112 | } |
5113 | s = d; | |
5114 | /* } | |
5115 | *s = '\0'; | |
5116 | PL_bufend = s; */ | |
5117 | } | |
5118 | #else | |
378cc40b | 5119 | *s = '\0'; |
3280af22 | 5120 | PL_bufend = s; |
5db06880 | 5121 | #endif |
a687059c | 5122 | } |
378cc40b LW |
5123 | goto retry; |
5124 | case '-': | |
79072805 | 5125 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 | 5126 | I32 ftst = 0; |
90771dc0 | 5127 | char tmp; |
e5edeb50 | 5128 | |
378cc40b | 5129 | s++; |
3280af22 | 5130 | PL_bufptr = s; |
748a9306 LW |
5131 | tmp = *s++; |
5132 | ||
bf4acbe4 | 5133 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
5134 | s++; |
5135 | ||
5136 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 5137 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
931e0695 | 5138 | DEBUG_T( { printbuf("### Saw unary minus before =>, forcing word %s\n", s); } ); |
748a9306 LW |
5139 | OPERATOR('-'); /* unary minus */ |
5140 | } | |
3280af22 | 5141 | PL_last_uni = PL_oldbufptr; |
748a9306 | 5142 | switch (tmp) { |
e5edeb50 JH |
5143 | case 'r': ftst = OP_FTEREAD; break; |
5144 | case 'w': ftst = OP_FTEWRITE; break; | |
5145 | case 'x': ftst = OP_FTEEXEC; break; | |
5146 | case 'o': ftst = OP_FTEOWNED; break; | |
5147 | case 'R': ftst = OP_FTRREAD; break; | |
5148 | case 'W': ftst = OP_FTRWRITE; break; | |
5149 | case 'X': ftst = OP_FTREXEC; break; | |
5150 | case 'O': ftst = OP_FTROWNED; break; | |
5151 | case 'e': ftst = OP_FTIS; break; | |
5152 | case 'z': ftst = OP_FTZERO; break; | |
5153 | case 's': ftst = OP_FTSIZE; break; | |
5154 | case 'f': ftst = OP_FTFILE; break; | |
5155 | case 'd': ftst = OP_FTDIR; break; | |
5156 | case 'l': ftst = OP_FTLINK; break; | |
5157 | case 'p': ftst = OP_FTPIPE; break; | |
5158 | case 'S': ftst = OP_FTSOCK; break; | |
5159 | case 'u': ftst = OP_FTSUID; break; | |
5160 | case 'g': ftst = OP_FTSGID; break; | |
5161 | case 'k': ftst = OP_FTSVTX; break; | |
5162 | case 'b': ftst = OP_FTBLK; break; | |
5163 | case 'c': ftst = OP_FTCHR; break; | |
5164 | case 't': ftst = OP_FTTTY; break; | |
5165 | case 'T': ftst = OP_FTTEXT; break; | |
5166 | case 'B': ftst = OP_FTBINARY; break; | |
5167 | case 'M': case 'A': case 'C': | |
fafc274c | 5168 | gv_fetchpvs("\024", GV_ADD|GV_NOTQUAL, SVt_PV); |
e5edeb50 JH |
5169 | switch (tmp) { |
5170 | case 'M': ftst = OP_FTMTIME; break; | |
5171 | case 'A': ftst = OP_FTATIME; break; | |
5172 | case 'C': ftst = OP_FTCTIME; break; | |
5173 | default: break; | |
5174 | } | |
5175 | break; | |
378cc40b | 5176 | default: |
378cc40b LW |
5177 | break; |
5178 | } | |
e5edeb50 | 5179 | if (ftst) { |
eb160463 | 5180 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 5181 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
a18d764d | 5182 | "### Saw file test %c\n", (int)tmp); |
5f80b19c | 5183 | } ); |
e5edeb50 JH |
5184 | FTST(ftst); |
5185 | } | |
5186 | else { | |
5187 | /* Assume it was a minus followed by a one-letter named | |
5188 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 5189 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 | 5190 | "### '-%c' looked like a file test but was not\n", |
4fccd7c6 | 5191 | (int) tmp); |
5f80b19c | 5192 | } ); |
3cf7b4c4 | 5193 | s = --PL_bufptr; |
e5edeb50 | 5194 | } |
378cc40b | 5195 | } |
90771dc0 NC |
5196 | { |
5197 | const char tmp = *s++; | |
5198 | if (*s == tmp) { | |
5199 | s++; | |
5200 | if (PL_expect == XOPERATOR) | |
5201 | TERM(POSTDEC); | |
5202 | else | |
5203 | OPERATOR(PREDEC); | |
5204 | } | |
5205 | else if (*s == '>') { | |
5206 | s++; | |
29595ff2 | 5207 | s = SKIPSPACE1(s); |
90771dc0 NC |
5208 | if (isIDFIRST_lazy_if(s,UTF)) { |
5209 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); | |
5210 | TOKEN(ARROW); | |
5211 | } | |
5212 | else if (*s == '$') | |
5213 | OPERATOR(ARROW); | |
5214 | else | |
5215 | TERM(ARROW); | |
5216 | } | |
78cdf107 Z |
5217 | if (PL_expect == XOPERATOR) { |
5218 | if (*s == '=' && !PL_lex_allbrackets && | |
5219 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5220 | s--; | |
5221 | TOKEN(0); | |
5222 | } | |
90771dc0 | 5223 | Aop(OP_SUBTRACT); |
78cdf107 | 5224 | } |
90771dc0 NC |
5225 | else { |
5226 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) | |
5227 | check_uni(); | |
5228 | OPERATOR('-'); /* unary minus */ | |
79072805 | 5229 | } |
2f3197b3 | 5230 | } |
79072805 | 5231 | |
378cc40b | 5232 | case '+': |
90771dc0 NC |
5233 | { |
5234 | const char tmp = *s++; | |
5235 | if (*s == tmp) { | |
5236 | s++; | |
5237 | if (PL_expect == XOPERATOR) | |
5238 | TERM(POSTINC); | |
5239 | else | |
5240 | OPERATOR(PREINC); | |
5241 | } | |
78cdf107 Z |
5242 | if (PL_expect == XOPERATOR) { |
5243 | if (*s == '=' && !PL_lex_allbrackets && | |
5244 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5245 | s--; | |
5246 | TOKEN(0); | |
5247 | } | |
90771dc0 | 5248 | Aop(OP_ADD); |
78cdf107 | 5249 | } |
90771dc0 NC |
5250 | else { |
5251 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) | |
5252 | check_uni(); | |
5253 | OPERATOR('+'); | |
5254 | } | |
2f3197b3 | 5255 | } |
a687059c | 5256 | |
378cc40b | 5257 | case '*': |
3280af22 NIS |
5258 | if (PL_expect != XOPERATOR) { |
5259 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
5260 | PL_expect = XOPERATOR; | |
5261 | force_ident(PL_tokenbuf, '*'); | |
5262 | if (!*PL_tokenbuf) | |
a0d0e21e | 5263 | PREREF('*'); |
79072805 | 5264 | TERM('*'); |
a687059c | 5265 | } |
79072805 LW |
5266 | s++; |
5267 | if (*s == '*') { | |
a687059c | 5268 | s++; |
78cdf107 Z |
5269 | if (*s == '=' && !PL_lex_allbrackets && |
5270 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5271 | s -= 2; | |
5272 | TOKEN(0); | |
5273 | } | |
79072805 | 5274 | PWop(OP_POW); |
a687059c | 5275 | } |
78cdf107 Z |
5276 | if (*s == '=' && !PL_lex_allbrackets && |
5277 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5278 | s--; | |
5279 | TOKEN(0); | |
5280 | } | |
79072805 LW |
5281 | Mop(OP_MULTIPLY); |
5282 | ||
378cc40b | 5283 | case '%': |
3280af22 | 5284 | if (PL_expect == XOPERATOR) { |
78cdf107 Z |
5285 | if (s[1] == '=' && !PL_lex_allbrackets && |
5286 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) | |
5287 | TOKEN(0); | |
bbce6d69 | 5288 | ++s; |
5289 | Mop(OP_MODULO); | |
a687059c | 5290 | } |
3280af22 | 5291 | PL_tokenbuf[0] = '%'; |
e8ae98db RGS |
5292 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
5293 | sizeof PL_tokenbuf - 1, FALSE); | |
3280af22 | 5294 | if (!PL_tokenbuf[1]) { |
bbce6d69 | 5295 | PREREF('%'); |
a687059c | 5296 | } |
3280af22 | 5297 | PL_pending_ident = '%'; |
bbce6d69 | 5298 | TERM('%'); |
a687059c | 5299 | |
378cc40b | 5300 | case '^': |
78cdf107 Z |
5301 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
5302 | (s[1] == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) | |
5303 | TOKEN(0); | |
79072805 | 5304 | s++; |
a0d0e21e | 5305 | BOop(OP_BIT_XOR); |
79072805 | 5306 | case '[': |
a7aaec61 Z |
5307 | if (PL_lex_brackets > 100) |
5308 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
5309 | PL_lex_brackstack[PL_lex_brackets++] = 0; | |
78cdf107 | 5310 | PL_lex_allbrackets++; |
df3467db IG |
5311 | { |
5312 | const char tmp = *s++; | |
5313 | OPERATOR(tmp); | |
5314 | } | |
378cc40b | 5315 | case '~': |
0d863452 | 5316 | if (s[1] == '~' |
3e7dd34d | 5317 | && (PL_expect == XOPERATOR || PL_expect == XTERMORDORDOR)) |
0d863452 | 5318 | { |
78cdf107 Z |
5319 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
5320 | TOKEN(0); | |
0d863452 RH |
5321 | s += 2; |
5322 | Eop(OP_SMARTMATCH); | |
5323 | } | |
78cdf107 Z |
5324 | s++; |
5325 | OPERATOR('~'); | |
378cc40b | 5326 | case ',': |
78cdf107 Z |
5327 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMMA) |
5328 | TOKEN(0); | |
5329 | s++; | |
5330 | OPERATOR(','); | |
a0d0e21e LW |
5331 | case ':': |
5332 | if (s[1] == ':') { | |
5333 | len = 0; | |
0bfa2a8a | 5334 | goto just_a_word_zero_gv; |
a0d0e21e LW |
5335 | } |
5336 | s++; | |
09bef843 SB |
5337 | switch (PL_expect) { |
5338 | OP *attrs; | |
5db06880 NC |
5339 | #ifdef PERL_MAD |
5340 | I32 stuffstart; | |
5341 | #endif | |
09bef843 SB |
5342 | case XOPERATOR: |
5343 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
5344 | break; | |
5345 | PL_bufptr = s; /* update in case we back off */ | |
d83f38d8 | 5346 | if (*s == '=') { |
2dc78664 NC |
5347 | Perl_croak(aTHX_ |
5348 | "Use of := for an empty attribute list is not allowed"); | |
d83f38d8 | 5349 | } |
09bef843 SB |
5350 | goto grabattrs; |
5351 | case XATTRBLOCK: | |
5352 | PL_expect = XBLOCK; | |
5353 | goto grabattrs; | |
5354 | case XATTRTERM: | |
5355 | PL_expect = XTERMBLOCK; | |
5356 | grabattrs: | |
5db06880 NC |
5357 | #ifdef PERL_MAD |
5358 | stuffstart = s - SvPVX(PL_linestr) - 1; | |
5359 | #endif | |
29595ff2 | 5360 | s = PEEKSPACE(s); |
5f66b61c | 5361 | attrs = NULL; |
7e2040f0 | 5362 | while (isIDFIRST_lazy_if(s,UTF)) { |
90771dc0 | 5363 | I32 tmp; |
5cc237b8 | 5364 | SV *sv; |
09bef843 | 5365 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
5458a98a | 5366 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len, 0))) { |
f9829d6b GS |
5367 | if (tmp < 0) tmp = -tmp; |
5368 | switch (tmp) { | |
5369 | case KEY_or: | |
5370 | case KEY_and: | |
5371 | case KEY_for: | |
11baf631 | 5372 | case KEY_foreach: |
f9829d6b GS |
5373 | case KEY_unless: |
5374 | case KEY_if: | |
5375 | case KEY_while: | |
5376 | case KEY_until: | |
5377 | goto got_attrs; | |
5378 | default: | |
5379 | break; | |
5380 | } | |
5381 | } | |
5cc237b8 | 5382 | sv = newSVpvn(s, len); |
09bef843 SB |
5383 | if (*d == '(') { |
5384 | d = scan_str(d,TRUE,TRUE); | |
5385 | if (!d) { | |
09bef843 SB |
5386 | /* MUST advance bufptr here to avoid bogus |
5387 | "at end of line" context messages from yyerror(). | |
5388 | */ | |
5389 | PL_bufptr = s + len; | |
5390 | yyerror("Unterminated attribute parameter in attribute list"); | |
5391 | if (attrs) | |
5392 | op_free(attrs); | |
5cc237b8 | 5393 | sv_free(sv); |
bbf60fe6 | 5394 | return REPORT(0); /* EOF indicator */ |
09bef843 SB |
5395 | } |
5396 | } | |
5397 | if (PL_lex_stuff) { | |
09bef843 | 5398 | sv_catsv(sv, PL_lex_stuff); |
2fcb4757 | 5399 | attrs = op_append_elem(OP_LIST, attrs, |
09bef843 SB |
5400 | newSVOP(OP_CONST, 0, sv)); |
5401 | SvREFCNT_dec(PL_lex_stuff); | |
a0714e2c | 5402 | PL_lex_stuff = NULL; |
09bef843 SB |
5403 | } |
5404 | else { | |
5cc237b8 BS |
5405 | if (len == 6 && strnEQ(SvPVX(sv), "unique", len)) { |
5406 | sv_free(sv); | |
1108974d | 5407 | if (PL_in_my == KEY_our) { |
df9a6019 | 5408 | deprecate(":unique"); |
1108974d | 5409 | } |
bfed75c6 | 5410 | else |
371fce9b DM |
5411 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); |
5412 | } | |
5413 | ||
d3cea301 SB |
5414 | /* NOTE: any CV attrs applied here need to be part of |
5415 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
5cc237b8 BS |
5416 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "lvalue", len)) { |
5417 | sv_free(sv); | |
78f9721b | 5418 | CvLVALUE_on(PL_compcv); |
5cc237b8 BS |
5419 | } |
5420 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "locked", len)) { | |
5421 | sv_free(sv); | |
8e5dadda | 5422 | deprecate(":locked"); |
5cc237b8 BS |
5423 | } |
5424 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "method", len)) { | |
5425 | sv_free(sv); | |
78f9721b | 5426 | CvMETHOD_on(PL_compcv); |
5cc237b8 | 5427 | } |
78f9721b SM |
5428 | /* After we've set the flags, it could be argued that |
5429 | we don't need to do the attributes.pm-based setting | |
5430 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
5431 | flags. To experiment with that, uncomment the |
5432 | following "else". (Note that's already been | |
5433 | uncommented. That keeps the above-applied built-in | |
5434 | attributes from being intercepted (and possibly | |
5435 | rejected) by a package's attribute routines, but is | |
5436 | justified by the performance win for the common case | |
5437 | of applying only built-in attributes.) */ | |
0256094b | 5438 | else |
2fcb4757 | 5439 | attrs = op_append_elem(OP_LIST, attrs, |
78f9721b | 5440 | newSVOP(OP_CONST, 0, |
5cc237b8 | 5441 | sv)); |
09bef843 | 5442 | } |
29595ff2 | 5443 | s = PEEKSPACE(d); |
0120eecf | 5444 | if (*s == ':' && s[1] != ':') |
29595ff2 | 5445 | s = PEEKSPACE(s+1); |
0120eecf GS |
5446 | else if (s == d) |
5447 | break; /* require real whitespace or :'s */ | |
29595ff2 | 5448 | /* XXX losing whitespace on sequential attributes here */ |
09bef843 | 5449 | } |
90771dc0 NC |
5450 | { |
5451 | const char tmp | |
5452 | = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ | |
5453 | if (*s != ';' && *s != '}' && *s != tmp | |
5454 | && (tmp != '=' || *s != ')')) { | |
5455 | const char q = ((*s == '\'') ? '"' : '\''); | |
5456 | /* If here for an expression, and parsed no attrs, back | |
5457 | off. */ | |
5458 | if (tmp == '=' && !attrs) { | |
5459 | s = PL_bufptr; | |
5460 | break; | |
5461 | } | |
5462 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
5463 | context messages from yyerror(). | |
5464 | */ | |
5465 | PL_bufptr = s; | |
10edeb5d JH |
5466 | yyerror( (const char *) |
5467 | (*s | |
5468 | ? Perl_form(aTHX_ "Invalid separator character " | |
5469 | "%c%c%c in attribute list", q, *s, q) | |
5470 | : "Unterminated attribute list" ) ); | |
90771dc0 NC |
5471 | if (attrs) |
5472 | op_free(attrs); | |
5473 | OPERATOR(':'); | |
09bef843 | 5474 | } |
09bef843 | 5475 | } |
f9829d6b | 5476 | got_attrs: |
09bef843 | 5477 | if (attrs) { |
cd81e915 | 5478 | start_force(PL_curforce); |
9ded7720 | 5479 | NEXTVAL_NEXTTOKE.opval = attrs; |
cd81e915 | 5480 | CURMAD('_', PL_nextwhite); |
89122651 | 5481 | force_next(THING); |
5db06880 NC |
5482 | } |
5483 | #ifdef PERL_MAD | |
5484 | if (PL_madskills) { | |
cd81e915 | 5485 | PL_thistoken = newSVpvn(SvPVX(PL_linestr) + stuffstart, |
5db06880 | 5486 | (s - SvPVX(PL_linestr)) - stuffstart); |
09bef843 | 5487 | } |
5db06880 | 5488 | #endif |
09bef843 SB |
5489 | TOKEN(COLONATTR); |
5490 | } | |
78cdf107 Z |
5491 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_CLOSING) { |
5492 | s--; | |
5493 | TOKEN(0); | |
5494 | } | |
5495 | PL_lex_allbrackets--; | |
a0d0e21e | 5496 | OPERATOR(':'); |
8990e307 LW |
5497 | case '(': |
5498 | s++; | |
3280af22 NIS |
5499 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
5500 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 5501 | else |
3280af22 | 5502 | PL_expect = XTERM; |
29595ff2 | 5503 | s = SKIPSPACE1(s); |
78cdf107 | 5504 | PL_lex_allbrackets++; |
a0d0e21e | 5505 | TOKEN('('); |
378cc40b | 5506 | case ';': |
78cdf107 Z |
5507 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
5508 | TOKEN(0); | |
f4dd75d9 | 5509 | CLINE; |
78cdf107 Z |
5510 | s++; |
5511 | OPERATOR(';'); | |
378cc40b | 5512 | case ')': |
78cdf107 Z |
5513 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_CLOSING) |
5514 | TOKEN(0); | |
5515 | s++; | |
5516 | PL_lex_allbrackets--; | |
5517 | s = SKIPSPACE1(s); | |
5518 | if (*s == '{') | |
5519 | PREBLOCK(')'); | |
5520 | TERM(')'); | |
79072805 | 5521 | case ']': |
a7aaec61 Z |
5522 | if (PL_lex_brackets && PL_lex_brackstack[PL_lex_brackets-1] == XFAKEEOF) |
5523 | TOKEN(0); | |
79072805 | 5524 | s++; |
3280af22 | 5525 | if (PL_lex_brackets <= 0) |
d98d5fff | 5526 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 5527 | else |
3280af22 | 5528 | --PL_lex_brackets; |
78cdf107 | 5529 | PL_lex_allbrackets--; |
3280af22 NIS |
5530 | if (PL_lex_state == LEX_INTERPNORMAL) { |
5531 | if (PL_lex_brackets == 0) { | |
02255c60 FC |
5532 | if (*s == '-' && s[1] == '>') |
5533 | PL_lex_state = LEX_INTERPENDMAYBE; | |
5534 | else if (*s != '[' && *s != '{') | |
3280af22 | 5535 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
5536 | } |
5537 | } | |
4633a7c4 | 5538 | TERM(']'); |
79072805 LW |
5539 | case '{': |
5540 | leftbracket: | |
79072805 | 5541 | s++; |
3280af22 | 5542 | if (PL_lex_brackets > 100) { |
8edd5f42 | 5543 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 5544 | } |
3280af22 | 5545 | switch (PL_expect) { |
a0d0e21e | 5546 | case XTERM: |
3280af22 | 5547 | if (PL_lex_formbrack) { |
a0d0e21e LW |
5548 | s--; |
5549 | PRETERMBLOCK(DO); | |
5550 | } | |
3280af22 NIS |
5551 | if (PL_oldoldbufptr == PL_last_lop) |
5552 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 5553 | else |
3280af22 | 5554 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5555 | PL_lex_allbrackets++; |
79072805 | 5556 | OPERATOR(HASHBRACK); |
a0d0e21e | 5557 | case XOPERATOR: |
bf4acbe4 | 5558 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 5559 | s++; |
44a8e56a | 5560 | d = s; |
3280af22 NIS |
5561 | PL_tokenbuf[0] = '\0'; |
5562 | if (d < PL_bufend && *d == '-') { | |
5563 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 5564 | d++; |
bf4acbe4 | 5565 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 5566 | d++; |
5567 | } | |
7e2040f0 | 5568 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 5569 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 5570 | FALSE, &len); |
bf4acbe4 | 5571 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
5572 | d++; |
5573 | if (*d == '}') { | |
f54cb97a | 5574 | const char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 5575 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
5576 | if (minus) | |
5577 | force_next('-'); | |
748a9306 LW |
5578 | } |
5579 | } | |
5580 | /* FALL THROUGH */ | |
09bef843 | 5581 | case XATTRBLOCK: |
748a9306 | 5582 | case XBLOCK: |
3280af22 | 5583 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
78cdf107 | 5584 | PL_lex_allbrackets++; |
3280af22 | 5585 | PL_expect = XSTATE; |
a0d0e21e | 5586 | break; |
09bef843 | 5587 | case XATTRTERM: |
a0d0e21e | 5588 | case XTERMBLOCK: |
3280af22 | 5589 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5590 | PL_lex_allbrackets++; |
3280af22 | 5591 | PL_expect = XSTATE; |
a0d0e21e LW |
5592 | break; |
5593 | default: { | |
f54cb97a | 5594 | const char *t; |
3280af22 NIS |
5595 | if (PL_oldoldbufptr == PL_last_lop) |
5596 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 5597 | else |
3280af22 | 5598 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5599 | PL_lex_allbrackets++; |
29595ff2 | 5600 | s = SKIPSPACE1(s); |
8452ff4b SB |
5601 | if (*s == '}') { |
5602 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
5603 | PL_expect = XTERM; | |
5604 | /* This hack is to get the ${} in the message. */ | |
5605 | PL_bufptr = s+1; | |
5606 | yyerror("syntax error"); | |
5607 | break; | |
5608 | } | |
a0d0e21e | 5609 | OPERATOR(HASHBRACK); |
8452ff4b | 5610 | } |
b8a4b1be GS |
5611 | /* This hack serves to disambiguate a pair of curlies |
5612 | * as being a block or an anon hash. Normally, expectation | |
5613 | * determines that, but in cases where we're not in a | |
5614 | * position to expect anything in particular (like inside | |
5615 | * eval"") we have to resolve the ambiguity. This code | |
5616 | * covers the case where the first term in the curlies is a | |
5617 | * quoted string. Most other cases need to be explicitly | |
a0288114 | 5618 | * disambiguated by prepending a "+" before the opening |
b8a4b1be GS |
5619 | * curly in order to force resolution as an anon hash. |
5620 | * | |
5621 | * XXX should probably propagate the outer expectation | |
5622 | * into eval"" to rely less on this hack, but that could | |
5623 | * potentially break current behavior of eval"". | |
5624 | * GSAR 97-07-21 | |
5625 | */ | |
5626 | t = s; | |
5627 | if (*s == '\'' || *s == '"' || *s == '`') { | |
5628 | /* common case: get past first string, handling escapes */ | |
3280af22 | 5629 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
5630 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
5631 | t++; | |
5632 | t++; | |
a0d0e21e | 5633 | } |
b8a4b1be | 5634 | else if (*s == 'q') { |
3280af22 | 5635 | if (++t < PL_bufend |
b8a4b1be | 5636 | && (!isALNUM(*t) |
3280af22 | 5637 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
5638 | && !isALNUM(*t)))) |
5639 | { | |
abc667d1 | 5640 | /* skip q//-like construct */ |
f54cb97a | 5641 | const char *tmps; |
b8a4b1be GS |
5642 | char open, close, term; |
5643 | I32 brackets = 1; | |
5644 | ||
3280af22 | 5645 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 5646 | t++; |
abc667d1 DM |
5647 | /* check for q => */ |
5648 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
5649 | OPERATOR(HASHBRACK); | |
5650 | } | |
b8a4b1be GS |
5651 | term = *t; |
5652 | open = term; | |
5653 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
5654 | term = tmps[5]; | |
5655 | close = term; | |
5656 | if (open == close) | |
3280af22 NIS |
5657 | for (t++; t < PL_bufend; t++) { |
5658 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 5659 | t++; |
6d07e5e9 | 5660 | else if (*t == open) |
b8a4b1be GS |
5661 | break; |
5662 | } | |
abc667d1 | 5663 | else { |
3280af22 NIS |
5664 | for (t++; t < PL_bufend; t++) { |
5665 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 5666 | t++; |
6d07e5e9 | 5667 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
5668 | break; |
5669 | else if (*t == open) | |
5670 | brackets++; | |
5671 | } | |
abc667d1 DM |
5672 | } |
5673 | t++; | |
b8a4b1be | 5674 | } |
abc667d1 DM |
5675 | else |
5676 | /* skip plain q word */ | |
5677 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
5678 | t += UTF8SKIP(t); | |
a0d0e21e | 5679 | } |
7e2040f0 | 5680 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 5681 | t += UTF8SKIP(t); |
7e2040f0 | 5682 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 5683 | t += UTF8SKIP(t); |
a0d0e21e | 5684 | } |
3280af22 | 5685 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 5686 | t++; |
b8a4b1be GS |
5687 | /* if comma follows first term, call it an anon hash */ |
5688 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 5689 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 5690 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 5691 | OPERATOR(HASHBRACK); |
3280af22 | 5692 | if (PL_expect == XREF) |
4e4e412b | 5693 | PL_expect = XTERM; |
a0d0e21e | 5694 | else { |
3280af22 NIS |
5695 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
5696 | PL_expect = XSTATE; | |
a0d0e21e | 5697 | } |
8990e307 | 5698 | } |
a0d0e21e | 5699 | break; |
463ee0b2 | 5700 | } |
6154021b | 5701 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 | 5702 | if (isSPACE(*s) || *s == '#') |
3280af22 | 5703 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 5704 | TOKEN('{'); |
378cc40b | 5705 | case '}': |
a7aaec61 Z |
5706 | if (PL_lex_brackets && PL_lex_brackstack[PL_lex_brackets-1] == XFAKEEOF) |
5707 | TOKEN(0); | |
79072805 LW |
5708 | rightbracket: |
5709 | s++; | |
3280af22 | 5710 | if (PL_lex_brackets <= 0) |
d98d5fff | 5711 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 5712 | else |
3280af22 | 5713 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
78cdf107 | 5714 | PL_lex_allbrackets--; |
c2e66d9e | 5715 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
5716 | PL_lex_formbrack = 0; |
5717 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
5718 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
5719 | if (PL_expect & XFAKEBRACK) { |
5720 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
5721 | PL_lex_state = LEX_INTERPEND; |
5722 | PL_bufptr = s; | |
5db06880 NC |
5723 | #if 0 |
5724 | if (PL_madskills) { | |
cd81e915 | 5725 | if (!PL_thiswhite) |
6b29d1f5 | 5726 | PL_thiswhite = newSVpvs(""); |
76f68e9b | 5727 | sv_catpvs(PL_thiswhite,"}"); |
5db06880 NC |
5728 | } |
5729 | #endif | |
cea2e8a9 | 5730 | return yylex(); /* ignore fake brackets */ |
79072805 | 5731 | } |
fa83b5b6 | 5732 | if (*s == '-' && s[1] == '>') |
3280af22 | 5733 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 5734 | else if (*s != '[' && *s != '{') |
3280af22 | 5735 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
5736 | } |
5737 | } | |
9059aa12 LW |
5738 | if (PL_expect & XFAKEBRACK) { |
5739 | PL_expect &= XENUMMASK; | |
3280af22 | 5740 | PL_bufptr = s; |
cea2e8a9 | 5741 | return yylex(); /* ignore fake brackets */ |
748a9306 | 5742 | } |
cd81e915 | 5743 | start_force(PL_curforce); |
5db06880 NC |
5744 | if (PL_madskills) { |
5745 | curmad('X', newSVpvn(s-1,1)); | |
cd81e915 | 5746 | CURMAD('_', PL_thiswhite); |
5db06880 | 5747 | } |
79072805 | 5748 | force_next('}'); |
5db06880 | 5749 | #ifdef PERL_MAD |
cd81e915 | 5750 | if (!PL_thistoken) |
6b29d1f5 | 5751 | PL_thistoken = newSVpvs(""); |
5db06880 | 5752 | #endif |
79072805 | 5753 | TOKEN(';'); |
378cc40b LW |
5754 | case '&': |
5755 | s++; | |
78cdf107 Z |
5756 | if (*s++ == '&') { |
5757 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= | |
5758 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) { | |
5759 | s -= 2; | |
5760 | TOKEN(0); | |
5761 | } | |
a0d0e21e | 5762 | AOPERATOR(ANDAND); |
78cdf107 | 5763 | } |
378cc40b | 5764 | s--; |
3280af22 | 5765 | if (PL_expect == XOPERATOR) { |
041457d9 DM |
5766 | if (PL_bufptr == PL_linestart && ckWARN(WARN_SEMICOLON) |
5767 | && isIDFIRST_lazy_if(s,UTF)) | |
7e2040f0 | 5768 | { |
57843af0 | 5769 | CopLINE_dec(PL_curcop); |
f1f66076 | 5770 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), "%s", PL_warn_nosemi); |
57843af0 | 5771 | CopLINE_inc(PL_curcop); |
463ee0b2 | 5772 | } |
78cdf107 Z |
5773 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
5774 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) { | |
5775 | s--; | |
5776 | TOKEN(0); | |
5777 | } | |
79072805 | 5778 | BAop(OP_BIT_AND); |
463ee0b2 | 5779 | } |
79072805 | 5780 | |
3280af22 NIS |
5781 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
5782 | if (*PL_tokenbuf) { | |
5783 | PL_expect = XOPERATOR; | |
5784 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 5785 | } |
79072805 LW |
5786 | else |
5787 | PREREF('&'); | |
6154021b | 5788 | pl_yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
5789 | TERM('&'); |
5790 | ||
378cc40b LW |
5791 | case '|': |
5792 | s++; | |
78cdf107 Z |
5793 | if (*s++ == '|') { |
5794 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= | |
5795 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) { | |
5796 | s -= 2; | |
5797 | TOKEN(0); | |
5798 | } | |
a0d0e21e | 5799 | AOPERATOR(OROR); |
78cdf107 | 5800 | } |
378cc40b | 5801 | s--; |
78cdf107 Z |
5802 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
5803 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) { | |
5804 | s--; | |
5805 | TOKEN(0); | |
5806 | } | |
79072805 | 5807 | BOop(OP_BIT_OR); |
378cc40b LW |
5808 | case '=': |
5809 | s++; | |
748a9306 | 5810 | { |
90771dc0 | 5811 | const char tmp = *s++; |
78cdf107 Z |
5812 | if (tmp == '=') { |
5813 | if (!PL_lex_allbrackets && | |
5814 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
5815 | s -= 2; | |
5816 | TOKEN(0); | |
5817 | } | |
90771dc0 | 5818 | Eop(OP_EQ); |
78cdf107 Z |
5819 | } |
5820 | if (tmp == '>') { | |
5821 | if (!PL_lex_allbrackets && | |
5822 | PL_lex_fakeeof >= LEX_FAKEEOF_COMMA) { | |
5823 | s -= 2; | |
5824 | TOKEN(0); | |
5825 | } | |
90771dc0 | 5826 | OPERATOR(','); |
78cdf107 | 5827 | } |
90771dc0 NC |
5828 | if (tmp == '~') |
5829 | PMop(OP_MATCH); | |
5830 | if (tmp && isSPACE(*s) && ckWARN(WARN_SYNTAX) | |
5831 | && strchr("+-*/%.^&|<",tmp)) | |
5832 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
5833 | "Reversed %c= operator",(int)tmp); | |
5834 | s--; | |
5835 | if (PL_expect == XSTATE && isALPHA(tmp) && | |
5836 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
5837 | { | |
5838 | if (PL_in_eval && !PL_rsfp) { | |
5839 | d = PL_bufend; | |
5840 | while (s < d) { | |
5841 | if (*s++ == '\n') { | |
5842 | incline(s); | |
5843 | if (strnEQ(s,"=cut",4)) { | |
5844 | s = strchr(s,'\n'); | |
5845 | if (s) | |
5846 | s++; | |
5847 | else | |
5848 | s = d; | |
5849 | incline(s); | |
5850 | goto retry; | |
5851 | } | |
5852 | } | |
a5f75d66 | 5853 | } |
90771dc0 | 5854 | goto retry; |
a5f75d66 | 5855 | } |
5db06880 NC |
5856 | #ifdef PERL_MAD |
5857 | if (PL_madskills) { | |
cd81e915 | 5858 | if (!PL_thiswhite) |
6b29d1f5 | 5859 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 5860 | sv_catpvn(PL_thiswhite, PL_linestart, |
5db06880 NC |
5861 | PL_bufend - PL_linestart); |
5862 | } | |
5863 | #endif | |
90771dc0 | 5864 | s = PL_bufend; |
737c24fc | 5865 | PL_parser->in_pod = 1; |
90771dc0 | 5866 | goto retry; |
a5f75d66 | 5867 | } |
a0d0e21e | 5868 | } |
3280af22 | 5869 | if (PL_lex_brackets < PL_lex_formbrack) { |
c35e046a | 5870 | const char *t = s; |
51882d45 | 5871 | #ifdef PERL_STRICT_CR |
c35e046a | 5872 | while (SPACE_OR_TAB(*t)) |
51882d45 | 5873 | #else |
c35e046a | 5874 | while (SPACE_OR_TAB(*t) || *t == '\r') |
51882d45 | 5875 | #endif |
c35e046a | 5876 | t++; |
a0d0e21e LW |
5877 | if (*t == '\n' || *t == '#') { |
5878 | s--; | |
3280af22 | 5879 | PL_expect = XBLOCK; |
a0d0e21e LW |
5880 | goto leftbracket; |
5881 | } | |
79072805 | 5882 | } |
78cdf107 Z |
5883 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { |
5884 | s--; | |
5885 | TOKEN(0); | |
5886 | } | |
6154021b | 5887 | pl_yylval.ival = 0; |
a0d0e21e | 5888 | OPERATOR(ASSIGNOP); |
378cc40b LW |
5889 | case '!': |
5890 | s++; | |
90771dc0 NC |
5891 | { |
5892 | const char tmp = *s++; | |
5893 | if (tmp == '=') { | |
5894 | /* was this !=~ where !~ was meant? | |
5895 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
5896 | ||
5897 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { | |
5898 | const char *t = s+1; | |
5899 | ||
5900 | while (t < PL_bufend && isSPACE(*t)) | |
5901 | ++t; | |
5902 | ||
5903 | if (*t == '/' || *t == '?' || | |
5904 | ((*t == 'm' || *t == 's' || *t == 'y') | |
5905 | && !isALNUM(t[1])) || | |
5906 | (*t == 't' && t[1] == 'r' && !isALNUM(t[2]))) | |
5907 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
5908 | "!=~ should be !~"); | |
5909 | } | |
78cdf107 Z |
5910 | if (!PL_lex_allbrackets && |
5911 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
5912 | s -= 2; | |
5913 | TOKEN(0); | |
5914 | } | |
90771dc0 NC |
5915 | Eop(OP_NE); |
5916 | } | |
5917 | if (tmp == '~') | |
5918 | PMop(OP_NOT); | |
5919 | } | |
378cc40b LW |
5920 | s--; |
5921 | OPERATOR('!'); | |
5922 | case '<': | |
3280af22 | 5923 | if (PL_expect != XOPERATOR) { |
93a17b20 | 5924 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 5925 | check_uni(); |
79072805 LW |
5926 | if (s[1] == '<') |
5927 | s = scan_heredoc(s); | |
5928 | else | |
5929 | s = scan_inputsymbol(s); | |
5930 | TERM(sublex_start()); | |
378cc40b LW |
5931 | } |
5932 | s++; | |
90771dc0 NC |
5933 | { |
5934 | char tmp = *s++; | |
78cdf107 Z |
5935 | if (tmp == '<') { |
5936 | if (*s == '=' && !PL_lex_allbrackets && | |
5937 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5938 | s -= 2; | |
5939 | TOKEN(0); | |
5940 | } | |
90771dc0 | 5941 | SHop(OP_LEFT_SHIFT); |
78cdf107 | 5942 | } |
90771dc0 NC |
5943 | if (tmp == '=') { |
5944 | tmp = *s++; | |
78cdf107 Z |
5945 | if (tmp == '>') { |
5946 | if (!PL_lex_allbrackets && | |
5947 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
5948 | s -= 3; | |
5949 | TOKEN(0); | |
5950 | } | |
90771dc0 | 5951 | Eop(OP_NCMP); |
78cdf107 | 5952 | } |
90771dc0 | 5953 | s--; |
78cdf107 Z |
5954 | if (!PL_lex_allbrackets && |
5955 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
5956 | s -= 2; | |
5957 | TOKEN(0); | |
5958 | } | |
90771dc0 NC |
5959 | Rop(OP_LE); |
5960 | } | |
395c3793 | 5961 | } |
378cc40b | 5962 | s--; |
78cdf107 Z |
5963 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { |
5964 | s--; | |
5965 | TOKEN(0); | |
5966 | } | |
79072805 | 5967 | Rop(OP_LT); |
378cc40b LW |
5968 | case '>': |
5969 | s++; | |
90771dc0 NC |
5970 | { |
5971 | const char tmp = *s++; | |
78cdf107 Z |
5972 | if (tmp == '>') { |
5973 | if (*s == '=' && !PL_lex_allbrackets && | |
5974 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5975 | s -= 2; | |
5976 | TOKEN(0); | |
5977 | } | |
90771dc0 | 5978 | SHop(OP_RIGHT_SHIFT); |
78cdf107 Z |
5979 | } |
5980 | else if (tmp == '=') { | |
5981 | if (!PL_lex_allbrackets && | |
5982 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
5983 | s -= 2; | |
5984 | TOKEN(0); | |
5985 | } | |
90771dc0 | 5986 | Rop(OP_GE); |
78cdf107 | 5987 | } |
90771dc0 | 5988 | } |
378cc40b | 5989 | s--; |
78cdf107 Z |
5990 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { |
5991 | s--; | |
5992 | TOKEN(0); | |
5993 | } | |
79072805 | 5994 | Rop(OP_GT); |
378cc40b LW |
5995 | |
5996 | case '$': | |
bbce6d69 | 5997 | CLINE; |
5998 | ||
3280af22 NIS |
5999 | if (PL_expect == XOPERATOR) { |
6000 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6001 | return deprecate_commaless_var_list(); |
a0d0e21e | 6002 | } |
8990e307 | 6003 | } |
a0d0e21e | 6004 | |
c0b977fd | 6005 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-@", s[2]))) { |
3280af22 | 6006 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
6007 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
6008 | sizeof PL_tokenbuf - 1, FALSE); | |
6009 | if (PL_expect == XOPERATOR) | |
6010 | no_op("Array length", s); | |
3280af22 | 6011 | if (!PL_tokenbuf[1]) |
a0d0e21e | 6012 | PREREF(DOLSHARP); |
3280af22 NIS |
6013 | PL_expect = XOPERATOR; |
6014 | PL_pending_ident = '#'; | |
463ee0b2 | 6015 | TOKEN(DOLSHARP); |
79072805 | 6016 | } |
bbce6d69 | 6017 | |
3280af22 | 6018 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
6019 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
6020 | sizeof PL_tokenbuf - 1, FALSE); | |
6021 | if (PL_expect == XOPERATOR) | |
6022 | no_op("Scalar", s); | |
3280af22 NIS |
6023 | if (!PL_tokenbuf[1]) { |
6024 | if (s == PL_bufend) | |
bbce6d69 | 6025 | yyerror("Final $ should be \\$ or $name"); |
6026 | PREREF('$'); | |
8990e307 | 6027 | } |
a0d0e21e | 6028 | |
ff68c719 | 6029 | d = s; |
90771dc0 NC |
6030 | { |
6031 | const char tmp = *s; | |
ae28bb2a | 6032 | if (PL_lex_state == LEX_NORMAL || PL_lex_brackets) |
29595ff2 | 6033 | s = SKIPSPACE1(s); |
ff68c719 | 6034 | |
90771dc0 NC |
6035 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) |
6036 | && intuit_more(s)) { | |
6037 | if (*s == '[') { | |
6038 | PL_tokenbuf[0] = '@'; | |
6039 | if (ckWARN(WARN_SYNTAX)) { | |
c35e046a AL |
6040 | char *t = s+1; |
6041 | ||
6042 | while (isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$') | |
6043 | t++; | |
90771dc0 | 6044 | if (*t++ == ',') { |
29595ff2 | 6045 | PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */ |
90771dc0 NC |
6046 | while (t < PL_bufend && *t != ']') |
6047 | t++; | |
9014280d | 6048 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
90771dc0 | 6049 | "Multidimensional syntax %.*s not supported", |
36c7798d | 6050 | (int)((t - PL_bufptr) + 1), PL_bufptr); |
90771dc0 | 6051 | } |
748a9306 | 6052 | } |
93a17b20 | 6053 | } |
90771dc0 NC |
6054 | else if (*s == '{') { |
6055 | char *t; | |
6056 | PL_tokenbuf[0] = '%'; | |
6057 | if (strEQ(PL_tokenbuf+1, "SIG") && ckWARN(WARN_SYNTAX) | |
6058 | && (t = strchr(s, '}')) && (t = strchr(t, '='))) | |
6059 | { | |
6060 | char tmpbuf[sizeof PL_tokenbuf]; | |
c35e046a AL |
6061 | do { |
6062 | t++; | |
6063 | } while (isSPACE(*t)); | |
90771dc0 | 6064 | if (isIDFIRST_lazy_if(t,UTF)) { |
780a5241 | 6065 | STRLEN len; |
90771dc0 | 6066 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, |
780a5241 | 6067 | &len); |
c35e046a AL |
6068 | while (isSPACE(*t)) |
6069 | t++; | |
780a5241 | 6070 | if (*t == ';' && get_cvn_flags(tmpbuf, len, 0)) |
90771dc0 NC |
6071 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
6072 | "You need to quote \"%s\"", | |
6073 | tmpbuf); | |
6074 | } | |
6075 | } | |
6076 | } | |
93a17b20 | 6077 | } |
bbce6d69 | 6078 | |
90771dc0 NC |
6079 | PL_expect = XOPERATOR; |
6080 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { | |
6081 | const bool islop = (PL_last_lop == PL_oldoldbufptr); | |
6082 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
6083 | PL_expect = XOPERATOR; | |
6084 | else if (strchr("$@\"'`q", *s)) | |
6085 | PL_expect = XTERM; /* e.g. print $fh "foo" */ | |
6086 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) | |
6087 | PL_expect = XTERM; /* e.g. print $fh &sub */ | |
6088 | else if (isIDFIRST_lazy_if(s,UTF)) { | |
6089 | char tmpbuf[sizeof PL_tokenbuf]; | |
6090 | int t2; | |
6091 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); | |
5458a98a | 6092 | if ((t2 = keyword(tmpbuf, len, 0))) { |
90771dc0 NC |
6093 | /* binary operators exclude handle interpretations */ |
6094 | switch (t2) { | |
6095 | case -KEY_x: | |
6096 | case -KEY_eq: | |
6097 | case -KEY_ne: | |
6098 | case -KEY_gt: | |
6099 | case -KEY_lt: | |
6100 | case -KEY_ge: | |
6101 | case -KEY_le: | |
6102 | case -KEY_cmp: | |
6103 | break; | |
6104 | default: | |
6105 | PL_expect = XTERM; /* e.g. print $fh length() */ | |
6106 | break; | |
6107 | } | |
6108 | } | |
6109 | else { | |
6110 | PL_expect = XTERM; /* e.g. print $fh subr() */ | |
84902520 TB |
6111 | } |
6112 | } | |
90771dc0 NC |
6113 | else if (isDIGIT(*s)) |
6114 | PL_expect = XTERM; /* e.g. print $fh 3 */ | |
6115 | else if (*s == '.' && isDIGIT(s[1])) | |
6116 | PL_expect = XTERM; /* e.g. print $fh .3 */ | |
6117 | else if ((*s == '?' || *s == '-' || *s == '+') | |
6118 | && !isSPACE(s[1]) && s[1] != '=') | |
6119 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
6120 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' | |
6121 | && s[1] != '/') | |
6122 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
6123 | XXX except DORDOR operator | |
6124 | */ | |
6125 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) | |
6126 | && s[2] != '=') | |
6127 | PL_expect = XTERM; /* print $fh <<"EOF" */ | |
93a17b20 | 6128 | } |
bbce6d69 | 6129 | } |
3280af22 | 6130 | PL_pending_ident = '$'; |
79072805 | 6131 | TOKEN('$'); |
378cc40b LW |
6132 | |
6133 | case '@': | |
3280af22 | 6134 | if (PL_expect == XOPERATOR) |
bbce6d69 | 6135 | no_op("Array", s); |
3280af22 NIS |
6136 | PL_tokenbuf[0] = '@'; |
6137 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
6138 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 6139 | PREREF('@'); |
6140 | } | |
3280af22 | 6141 | if (PL_lex_state == LEX_NORMAL) |
29595ff2 | 6142 | s = SKIPSPACE1(s); |
3280af22 | 6143 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 6144 | if (*s == '{') |
3280af22 | 6145 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
6146 | |
6147 | /* Warn about @ where they meant $. */ | |
041457d9 DM |
6148 | if (*s == '[' || *s == '{') { |
6149 | if (ckWARN(WARN_SYNTAX)) { | |
f54cb97a | 6150 | const char *t = s + 1; |
7e2040f0 | 6151 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
6152 | t++; |
6153 | if (*t == '}' || *t == ']') { | |
6154 | t++; | |
29595ff2 | 6155 | PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */ |
9014280d | 6156 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 6157 | "Scalar value %.*s better written as $%.*s", |
36c7798d DM |
6158 | (int)(t-PL_bufptr), PL_bufptr, |
6159 | (int)(t-PL_bufptr-1), PL_bufptr+1); | |
a0d0e21e | 6160 | } |
93a17b20 LW |
6161 | } |
6162 | } | |
463ee0b2 | 6163 | } |
3280af22 | 6164 | PL_pending_ident = '@'; |
79072805 | 6165 | TERM('@'); |
378cc40b | 6166 | |
c963b151 | 6167 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 | 6168 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
78cdf107 Z |
6169 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6170 | (s[2] == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) | |
6171 | TOKEN(0); | |
6f33ba73 RGS |
6172 | s += 2; |
6173 | AOPERATOR(DORDOR); | |
6174 | } | |
c963b151 | 6175 | case '?': /* may either be conditional or pattern */ |
be25f609 | 6176 | if (PL_expect == XOPERATOR) { |
90771dc0 | 6177 | char tmp = *s++; |
c963b151 | 6178 | if(tmp == '?') { |
78cdf107 Z |
6179 | if (!PL_lex_allbrackets && |
6180 | PL_lex_fakeeof >= LEX_FAKEEOF_IFELSE) { | |
6181 | s--; | |
6182 | TOKEN(0); | |
6183 | } | |
6184 | PL_lex_allbrackets++; | |
be25f609 | 6185 | OPERATOR('?'); |
c963b151 BD |
6186 | } |
6187 | else { | |
6188 | tmp = *s++; | |
6189 | if(tmp == '/') { | |
6190 | /* A // operator. */ | |
78cdf107 Z |
6191 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6192 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : | |
6193 | LEX_FAKEEOF_LOGIC)) { | |
6194 | s -= 2; | |
6195 | TOKEN(0); | |
6196 | } | |
c963b151 BD |
6197 | AOPERATOR(DORDOR); |
6198 | } | |
6199 | else { | |
6200 | s--; | |
78cdf107 Z |
6201 | if (*s == '=' && !PL_lex_allbrackets && |
6202 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6203 | s--; | |
6204 | TOKEN(0); | |
6205 | } | |
c963b151 BD |
6206 | Mop(OP_DIVIDE); |
6207 | } | |
6208 | } | |
6209 | } | |
6210 | else { | |
6211 | /* Disable warning on "study /blah/" */ | |
6212 | if (PL_oldoldbufptr == PL_last_uni | |
6213 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
6214 | || memNE(PL_last_uni, "study", 5) | |
6215 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
6216 | )) | |
6217 | check_uni(); | |
725a61d7 Z |
6218 | if (*s == '?') |
6219 | deprecate("?PATTERN? without explicit operator"); | |
c963b151 BD |
6220 | s = scan_pat(s,OP_MATCH); |
6221 | TERM(sublex_start()); | |
6222 | } | |
378cc40b LW |
6223 | |
6224 | case '.': | |
51882d45 GS |
6225 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
6226 | #ifdef PERL_STRICT_CR | |
6227 | && s[1] == '\n' | |
6228 | #else | |
6229 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
6230 | #endif | |
6231 | && (s == PL_linestart || s[-1] == '\n') ) | |
6232 | { | |
3280af22 NIS |
6233 | PL_lex_formbrack = 0; |
6234 | PL_expect = XSTATE; | |
79072805 LW |
6235 | goto rightbracket; |
6236 | } | |
be25f609 | 6237 | if (PL_expect == XSTATE && s[1] == '.' && s[2] == '.') { |
6238 | s += 3; | |
6239 | OPERATOR(YADAYADA); | |
6240 | } | |
3280af22 | 6241 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
90771dc0 | 6242 | char tmp = *s++; |
a687059c | 6243 | if (*s == tmp) { |
78cdf107 Z |
6244 | if (!PL_lex_allbrackets && |
6245 | PL_lex_fakeeof >= LEX_FAKEEOF_RANGE) { | |
6246 | s--; | |
6247 | TOKEN(0); | |
6248 | } | |
a687059c | 6249 | s++; |
2f3197b3 LW |
6250 | if (*s == tmp) { |
6251 | s++; | |
6154021b | 6252 | pl_yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
6253 | } |
6254 | else | |
6154021b | 6255 | pl_yylval.ival = 0; |
378cc40b | 6256 | OPERATOR(DOTDOT); |
a687059c | 6257 | } |
78cdf107 Z |
6258 | if (*s == '=' && !PL_lex_allbrackets && |
6259 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6260 | s--; | |
6261 | TOKEN(0); | |
6262 | } | |
79072805 | 6263 | Aop(OP_CONCAT); |
378cc40b LW |
6264 | } |
6265 | /* FALL THROUGH */ | |
6266 | case '0': case '1': case '2': case '3': case '4': | |
6267 | case '5': case '6': case '7': case '8': case '9': | |
6154021b | 6268 | s = scan_num(s, &pl_yylval); |
931e0695 | 6269 | DEBUG_T( { printbuf("### Saw number in %s\n", s); } ); |
3280af22 | 6270 | if (PL_expect == XOPERATOR) |
8990e307 | 6271 | no_op("Number",s); |
79072805 LW |
6272 | TERM(THING); |
6273 | ||
6274 | case '\'': | |
5db06880 | 6275 | s = scan_str(s,!!PL_madskills,FALSE); |
931e0695 | 6276 | DEBUG_T( { printbuf("### Saw string before %s\n", s); } ); |
3280af22 NIS |
6277 | if (PL_expect == XOPERATOR) { |
6278 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6279 | return deprecate_commaless_var_list(); |
a0d0e21e | 6280 | } |
463ee0b2 | 6281 | else |
8990e307 | 6282 | no_op("String",s); |
463ee0b2 | 6283 | } |
79072805 | 6284 | if (!s) |
d4c19fe8 | 6285 | missingterm(NULL); |
6154021b | 6286 | pl_yylval.ival = OP_CONST; |
79072805 LW |
6287 | TERM(sublex_start()); |
6288 | ||
6289 | case '"': | |
5db06880 | 6290 | s = scan_str(s,!!PL_madskills,FALSE); |
931e0695 | 6291 | DEBUG_T( { printbuf("### Saw string before %s\n", s); } ); |
3280af22 NIS |
6292 | if (PL_expect == XOPERATOR) { |
6293 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6294 | return deprecate_commaless_var_list(); |
a0d0e21e | 6295 | } |
463ee0b2 | 6296 | else |
8990e307 | 6297 | no_op("String",s); |
463ee0b2 | 6298 | } |
79072805 | 6299 | if (!s) |
d4c19fe8 | 6300 | missingterm(NULL); |
6154021b | 6301 | pl_yylval.ival = OP_CONST; |
cfd0369c NC |
6302 | /* FIXME. I think that this can be const if char *d is replaced by |
6303 | more localised variables. */ | |
3280af22 | 6304 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 6305 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
6154021b | 6306 | pl_yylval.ival = OP_STRINGIFY; |
4633a7c4 LW |
6307 | break; |
6308 | } | |
6309 | } | |
79072805 LW |
6310 | TERM(sublex_start()); |
6311 | ||
6312 | case '`': | |
5db06880 | 6313 | s = scan_str(s,!!PL_madskills,FALSE); |
931e0695 | 6314 | DEBUG_T( { printbuf("### Saw backtick string before %s\n", s); } ); |
3280af22 | 6315 | if (PL_expect == XOPERATOR) |
8990e307 | 6316 | no_op("Backticks",s); |
79072805 | 6317 | if (!s) |
d4c19fe8 | 6318 | missingterm(NULL); |
9b201d7d | 6319 | readpipe_override(); |
79072805 LW |
6320 | TERM(sublex_start()); |
6321 | ||
6322 | case '\\': | |
6323 | s++; | |
a2a5de95 NC |
6324 | if (PL_lex_inwhat && isDIGIT(*s)) |
6325 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", | |
6326 | *s, *s); | |
3280af22 | 6327 | if (PL_expect == XOPERATOR) |
8990e307 | 6328 | no_op("Backslash",s); |
79072805 LW |
6329 | OPERATOR(REFGEN); |
6330 | ||
a7cb1f99 | 6331 | case 'v': |
e526c9e6 | 6332 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
f54cb97a | 6333 | char *start = s + 2; |
dd629d5b | 6334 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
6335 | start++; |
6336 | if (*start == '.' && isDIGIT(start[1])) { | |
6154021b | 6337 | s = scan_num(s, &pl_yylval); |
a7cb1f99 GS |
6338 | TERM(THING); |
6339 | } | |
e526c9e6 | 6340 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
6f33ba73 RGS |
6341 | else if (!isALPHA(*start) && (PL_expect == XTERM |
6342 | || PL_expect == XREF || PL_expect == XSTATE | |
6343 | || PL_expect == XTERMORDORDOR)) { | |
9bde8eb0 | 6344 | GV *const gv = gv_fetchpvn_flags(s, start - s, 0, SVt_PVCV); |
e526c9e6 | 6345 | if (!gv) { |
6154021b | 6346 | s = scan_num(s, &pl_yylval); |
e526c9e6 GS |
6347 | TERM(THING); |
6348 | } | |
6349 | } | |
a7cb1f99 GS |
6350 | } |
6351 | goto keylookup; | |
79072805 | 6352 | case 'x': |
3280af22 | 6353 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
6354 | s++; |
6355 | Mop(OP_REPEAT); | |
2f3197b3 | 6356 | } |
79072805 LW |
6357 | goto keylookup; |
6358 | ||
378cc40b | 6359 | case '_': |
79072805 LW |
6360 | case 'a': case 'A': |
6361 | case 'b': case 'B': | |
6362 | case 'c': case 'C': | |
6363 | case 'd': case 'D': | |
6364 | case 'e': case 'E': | |
6365 | case 'f': case 'F': | |
6366 | case 'g': case 'G': | |
6367 | case 'h': case 'H': | |
6368 | case 'i': case 'I': | |
6369 | case 'j': case 'J': | |
6370 | case 'k': case 'K': | |
6371 | case 'l': case 'L': | |
6372 | case 'm': case 'M': | |
6373 | case 'n': case 'N': | |
6374 | case 'o': case 'O': | |
6375 | case 'p': case 'P': | |
6376 | case 'q': case 'Q': | |
6377 | case 'r': case 'R': | |
6378 | case 's': case 'S': | |
6379 | case 't': case 'T': | |
6380 | case 'u': case 'U': | |
a7cb1f99 | 6381 | case 'V': |
79072805 LW |
6382 | case 'w': case 'W': |
6383 | case 'X': | |
6384 | case 'y': case 'Y': | |
6385 | case 'z': case 'Z': | |
6386 | ||
49dc05e3 | 6387 | keylookup: { |
88e1f1a2 | 6388 | bool anydelim; |
90771dc0 | 6389 | I32 tmp; |
10edeb5d JH |
6390 | |
6391 | orig_keyword = 0; | |
6392 | gv = NULL; | |
6393 | gvp = NULL; | |
49dc05e3 | 6394 | |
3280af22 NIS |
6395 | PL_bufptr = s; |
6396 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 6397 | |
6398 | /* Some keywords can be followed by any delimiter, including ':' */ | |
361d9b55 | 6399 | anydelim = word_takes_any_delimeter(PL_tokenbuf, len); |
8ebc5c01 | 6400 | |
6401 | /* x::* is just a word, unless x is "CORE" */ | |
88e1f1a2 | 6402 | if (!anydelim && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
6403 | goto just_a_word; |
6404 | ||
3643fb5f | 6405 | d = s; |
3280af22 | 6406 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
6407 | d++; /* no comments skipped here, or s### is misparsed */ |
6408 | ||
748a9306 | 6409 | /* Is this a word before a => operator? */ |
1c3923b3 | 6410 | if (*d == '=' && d[1] == '>') { |
748a9306 | 6411 | CLINE; |
6154021b | 6412 | pl_yylval.opval |
d0a148a6 NC |
6413 | = (OP*)newSVOP(OP_CONST, 0, |
6414 | S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, len)); | |
6154021b | 6415 | pl_yylval.opval->op_private = OPpCONST_BARE; |
748a9306 LW |
6416 | TERM(WORD); |
6417 | } | |
6418 | ||
88e1f1a2 JV |
6419 | /* Check for plugged-in keyword */ |
6420 | { | |
6421 | OP *o; | |
6422 | int result; | |
6423 | char *saved_bufptr = PL_bufptr; | |
6424 | PL_bufptr = s; | |
16c91539 | 6425 | result = PL_keyword_plugin(aTHX_ PL_tokenbuf, len, &o); |
88e1f1a2 JV |
6426 | s = PL_bufptr; |
6427 | if (result == KEYWORD_PLUGIN_DECLINE) { | |
6428 | /* not a plugged-in keyword */ | |
6429 | PL_bufptr = saved_bufptr; | |
6430 | } else if (result == KEYWORD_PLUGIN_STMT) { | |
6431 | pl_yylval.opval = o; | |
6432 | CLINE; | |
6433 | PL_expect = XSTATE; | |
6434 | return REPORT(PLUGSTMT); | |
6435 | } else if (result == KEYWORD_PLUGIN_EXPR) { | |
6436 | pl_yylval.opval = o; | |
6437 | CLINE; | |
6438 | PL_expect = XOPERATOR; | |
6439 | return REPORT(PLUGEXPR); | |
6440 | } else { | |
6441 | Perl_croak(aTHX_ "Bad plugin affecting keyword '%s'", | |
6442 | PL_tokenbuf); | |
6443 | } | |
6444 | } | |
6445 | ||
6446 | /* Check for built-in keyword */ | |
6447 | tmp = keyword(PL_tokenbuf, len, 0); | |
6448 | ||
6449 | /* Is this a label? */ | |
6450 | if (!anydelim && PL_expect == XSTATE | |
6451 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
88e1f1a2 JV |
6452 | s = d + 1; |
6453 | pl_yylval.pval = CopLABEL_alloc(PL_tokenbuf); | |
6454 | CLINE; | |
6455 | TOKEN(LABEL); | |
6456 | } | |
6457 | ||
a0d0e21e | 6458 | if (tmp < 0) { /* second-class keyword? */ |
cbbf8932 AL |
6459 | GV *ogv = NULL; /* override (winner) */ |
6460 | GV *hgv = NULL; /* hidden (loser) */ | |
3280af22 | 6461 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 6462 | CV *cv; |
90e5519e | 6463 | if ((gv = gv_fetchpvn_flags(PL_tokenbuf, len, 0, SVt_PVCV)) && |
56f7f34b CS |
6464 | (cv = GvCVu(gv))) |
6465 | { | |
6466 | if (GvIMPORTED_CV(gv)) | |
6467 | ogv = gv; | |
6468 | else if (! CvMETHOD(cv)) | |
6469 | hgv = gv; | |
6470 | } | |
6471 | if (!ogv && | |
3280af22 | 6472 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
9e0d86f8 | 6473 | (gv = *gvp) && isGV_with_GP(gv) && |
56f7f34b CS |
6474 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
6475 | { | |
6476 | ogv = gv; | |
6477 | } | |
6478 | } | |
6479 | if (ogv) { | |
30fe34ed | 6480 | orig_keyword = tmp; |
56f7f34b | 6481 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
6482 | } |
6483 | else if (gv && !gvp | |
6484 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
47f9f84c | 6485 | && GvCVu(gv)) |
6e7b2336 GS |
6486 | { |
6487 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 6488 | } |
56f7f34b CS |
6489 | else { /* no override */ |
6490 | tmp = -tmp; | |
a2a5de95 NC |
6491 | if (tmp == KEY_dump) { |
6492 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
6493 | "dump() better written as CORE::dump()"); | |
ac206dc8 | 6494 | } |
a0714e2c | 6495 | gv = NULL; |
56f7f34b | 6496 | gvp = 0; |
a2a5de95 NC |
6497 | if (hgv && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ |
6498 | Perl_ck_warner(aTHX_ packWARN(WARN_AMBIGUOUS), | |
de2b151d JM |
6499 | "Ambiguous call resolved as CORE::%s(), " |
6500 | "qualify as such or use &", | |
6501 | GvENAME(hgv)); | |
49dc05e3 | 6502 | } |
a0d0e21e LW |
6503 | } |
6504 | ||
6505 | reserved_word: | |
6506 | switch (tmp) { | |
79072805 LW |
6507 | |
6508 | default: /* not a keyword */ | |
0bfa2a8a NC |
6509 | /* Trade off - by using this evil construction we can pull the |
6510 | variable gv into the block labelled keylookup. If not, then | |
6511 | we have to give it function scope so that the goto from the | |
6512 | earlier ':' case doesn't bypass the initialisation. */ | |
6513 | if (0) { | |
6514 | just_a_word_zero_gv: | |
6515 | gv = NULL; | |
6516 | gvp = NULL; | |
8bee0991 | 6517 | orig_keyword = 0; |
0bfa2a8a | 6518 | } |
93a17b20 | 6519 | just_a_word: { |
96e4d5b1 | 6520 | SV *sv; |
ce29ac45 | 6521 | int pkgname = 0; |
f54cb97a | 6522 | const char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
f7461760 | 6523 | OP *rv2cv_op; |
5069cc75 | 6524 | CV *cv; |
5db06880 | 6525 | #ifdef PERL_MAD |
cd81e915 | 6526 | SV *nextPL_nextwhite = 0; |
5db06880 NC |
6527 | #endif |
6528 | ||
8990e307 LW |
6529 | |
6530 | /* Get the rest if it looks like a package qualifier */ | |
6531 | ||
155aba94 | 6532 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 6533 | STRLEN morelen; |
3280af22 | 6534 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
6535 | TRUE, &morelen); |
6536 | if (!morelen) | |
cea2e8a9 | 6537 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 6538 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 6539 | len += morelen; |
ce29ac45 | 6540 | pkgname = 1; |
a0d0e21e | 6541 | } |
8990e307 | 6542 | |
3280af22 NIS |
6543 | if (PL_expect == XOPERATOR) { |
6544 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 6545 | CopLINE_dec(PL_curcop); |
f1f66076 | 6546 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), "%s", PL_warn_nosemi); |
57843af0 | 6547 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
6548 | } |
6549 | else | |
54310121 | 6550 | no_op("Bareword",s); |
463ee0b2 | 6551 | } |
8990e307 | 6552 | |
c3e0f903 | 6553 | /* Look for a subroutine with this name in current package, |
486ec47a | 6554 | unless name is "Foo::", in which case Foo is a bareword |
c3e0f903 GS |
6555 | (and a package name). */ |
6556 | ||
5db06880 | 6557 | if (len > 2 && !PL_madskills && |
3280af22 | 6558 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 6559 | { |
f776e3cd | 6560 | if (ckWARN(WARN_BAREWORD) |
90e5519e | 6561 | && ! gv_fetchpvn_flags(PL_tokenbuf, len, 0, SVt_PVHV)) |
9014280d | 6562 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 6563 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 6564 | PL_tokenbuf); |
c3e0f903 | 6565 | len -= 2; |
3280af22 | 6566 | PL_tokenbuf[len] = '\0'; |
a0714e2c | 6567 | gv = NULL; |
c3e0f903 GS |
6568 | gvp = 0; |
6569 | } | |
6570 | else { | |
62d55b22 NC |
6571 | if (!gv) { |
6572 | /* Mustn't actually add anything to a symbol table. | |
6573 | But also don't want to "initialise" any placeholder | |
6574 | constants that might already be there into full | |
6575 | blown PVGVs with attached PVCV. */ | |
90e5519e NC |
6576 | gv = gv_fetchpvn_flags(PL_tokenbuf, len, |
6577 | GV_NOADD_NOINIT, SVt_PVCV); | |
62d55b22 | 6578 | } |
b3d904f3 | 6579 | len = 0; |
c3e0f903 GS |
6580 | } |
6581 | ||
6582 | /* if we saw a global override before, get the right name */ | |
8990e307 | 6583 | |
37bb7629 EB |
6584 | sv = S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, |
6585 | len ? len : strlen(PL_tokenbuf)); | |
49dc05e3 | 6586 | if (gvp) { |
37bb7629 | 6587 | SV * const tmp_sv = sv; |
396482e1 | 6588 | sv = newSVpvs("CORE::GLOBAL::"); |
37bb7629 EB |
6589 | sv_catsv(sv, tmp_sv); |
6590 | SvREFCNT_dec(tmp_sv); | |
8a7a129d | 6591 | } |
37bb7629 | 6592 | |
5db06880 | 6593 | #ifdef PERL_MAD |
cd81e915 NC |
6594 | if (PL_madskills && !PL_thistoken) { |
6595 | char *start = SvPVX(PL_linestr) + PL_realtokenstart; | |
9ff8e806 | 6596 | PL_thistoken = newSVpvn(start,s - start); |
cd81e915 | 6597 | PL_realtokenstart = s - SvPVX(PL_linestr); |
5db06880 NC |
6598 | } |
6599 | #endif | |
8990e307 | 6600 | |
a0d0e21e | 6601 | /* Presume this is going to be a bareword of some sort. */ |
a0d0e21e | 6602 | CLINE; |
6154021b RGS |
6603 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
6604 | pl_yylval.opval->op_private = OPpCONST_BARE; | |
a0d0e21e | 6605 | |
c3e0f903 | 6606 | /* And if "Foo::", then that's what it certainly is. */ |
c3e0f903 GS |
6607 | if (len) |
6608 | goto safe_bareword; | |
6609 | ||
f7461760 | 6610 | { |
d8ebba9f | 6611 | OP *const_op = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(sv)); |
f7461760 Z |
6612 | const_op->op_private = OPpCONST_BARE; |
6613 | rv2cv_op = newCVREF(0, const_op); | |
6614 | } | |
d9088386 | 6615 | cv = rv2cv_op_cv(rv2cv_op, 0); |
5069cc75 | 6616 | |
8990e307 LW |
6617 | /* See if it's the indirect object for a list operator. */ |
6618 | ||
3280af22 NIS |
6619 | if (PL_oldoldbufptr && |
6620 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
6621 | (PL_oldoldbufptr == PL_last_lop |
6622 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 6623 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
6624 | (PL_expect == XREF || |
6625 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 6626 | { |
748a9306 LW |
6627 | bool immediate_paren = *s == '('; |
6628 | ||
a0d0e21e | 6629 | /* (Now we can afford to cross potential line boundary.) */ |
cd81e915 | 6630 | s = SKIPSPACE2(s,nextPL_nextwhite); |
5db06880 | 6631 | #ifdef PERL_MAD |
cd81e915 | 6632 | PL_nextwhite = nextPL_nextwhite; /* assume no & deception */ |
5db06880 | 6633 | #endif |
a0d0e21e LW |
6634 | |
6635 | /* Two barewords in a row may indicate method call. */ | |
6636 | ||
62d55b22 | 6637 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && |
f7461760 Z |
6638 | (tmp = intuit_method(s, gv, cv))) { |
6639 | op_free(rv2cv_op); | |
78cdf107 Z |
6640 | if (tmp == METHOD && !PL_lex_allbrackets && |
6641 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6642 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 6643 | return REPORT(tmp); |
f7461760 | 6644 | } |
a0d0e21e LW |
6645 | |
6646 | /* If not a declared subroutine, it's an indirect object. */ | |
6647 | /* (But it's an indir obj regardless for sort.) */ | |
7294df96 | 6648 | /* Also, if "_" follows a filetest operator, it's a bareword */ |
a0d0e21e | 6649 | |
7294df96 RGS |
6650 | if ( |
6651 | ( !immediate_paren && (PL_last_lop_op == OP_SORT || | |
f7461760 | 6652 | (!cv && |
a9ef352a | 6653 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 6654 | PL_last_lop_op != OP_GREPSTART)))) |
7294df96 RGS |
6655 | || (PL_tokenbuf[0] == '_' && PL_tokenbuf[1] == '\0' |
6656 | && ((PL_opargs[PL_last_lop_op] & OA_CLASS_MASK) == OA_FILESTATOP)) | |
6657 | ) | |
a9ef352a | 6658 | { |
3280af22 | 6659 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 6660 | goto bareword; |
93a17b20 LW |
6661 | } |
6662 | } | |
8990e307 | 6663 | |
3280af22 | 6664 | PL_expect = XOPERATOR; |
5db06880 NC |
6665 | #ifdef PERL_MAD |
6666 | if (isSPACE(*s)) | |
cd81e915 NC |
6667 | s = SKIPSPACE2(s,nextPL_nextwhite); |
6668 | PL_nextwhite = nextPL_nextwhite; | |
5db06880 | 6669 | #else |
8990e307 | 6670 | s = skipspace(s); |
5db06880 | 6671 | #endif |
1c3923b3 GS |
6672 | |
6673 | /* Is this a word before a => operator? */ | |
ce29ac45 | 6674 | if (*s == '=' && s[1] == '>' && !pkgname) { |
f7461760 | 6675 | op_free(rv2cv_op); |
1c3923b3 | 6676 | CLINE; |
6154021b | 6677 | sv_setpv(((SVOP*)pl_yylval.opval)->op_sv, PL_tokenbuf); |
0064a8a9 | 6678 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
6154021b | 6679 | SvUTF8_on(((SVOP*)pl_yylval.opval)->op_sv); |
1c3923b3 GS |
6680 | TERM(WORD); |
6681 | } | |
6682 | ||
6683 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 6684 | if (*s == '(') { |
79072805 | 6685 | CLINE; |
5069cc75 | 6686 | if (cv) { |
c35e046a AL |
6687 | d = s + 1; |
6688 | while (SPACE_OR_TAB(*d)) | |
6689 | d++; | |
f7461760 | 6690 | if (*d == ')' && (sv = cv_const_sv(cv))) { |
96e4d5b1 | 6691 | s = d + 1; |
c631f32b | 6692 | goto its_constant; |
96e4d5b1 | 6693 | } |
6694 | } | |
5db06880 NC |
6695 | #ifdef PERL_MAD |
6696 | if (PL_madskills) { | |
cd81e915 NC |
6697 | PL_nextwhite = PL_thiswhite; |
6698 | PL_thiswhite = 0; | |
5db06880 | 6699 | } |
cd81e915 | 6700 | start_force(PL_curforce); |
5db06880 | 6701 | #endif |
6154021b | 6702 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
3280af22 | 6703 | PL_expect = XOPERATOR; |
5db06880 NC |
6704 | #ifdef PERL_MAD |
6705 | if (PL_madskills) { | |
cd81e915 NC |
6706 | PL_nextwhite = nextPL_nextwhite; |
6707 | curmad('X', PL_thistoken); | |
6b29d1f5 | 6708 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
6709 | } |
6710 | #endif | |
f7461760 | 6711 | op_free(rv2cv_op); |
93a17b20 | 6712 | force_next(WORD); |
6154021b | 6713 | pl_yylval.ival = 0; |
463ee0b2 | 6714 | TOKEN('&'); |
79072805 | 6715 | } |
93a17b20 | 6716 | |
a0d0e21e | 6717 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 6718 | |
f7461760 Z |
6719 | if ((*s == '$' || *s == '{') && !cv) { |
6720 | op_free(rv2cv_op); | |
3280af22 NIS |
6721 | PL_last_lop = PL_oldbufptr; |
6722 | PL_last_lop_op = OP_METHOD; | |
78cdf107 Z |
6723 | if (!PL_lex_allbrackets && |
6724 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6725 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
93a17b20 | 6726 | PREBLOCK(METHOD); |
463ee0b2 LW |
6727 | } |
6728 | ||
8990e307 LW |
6729 | /* If followed by a bareword, see if it looks like indir obj. */ |
6730 | ||
30fe34ed RGS |
6731 | if (!orig_keyword |
6732 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
f7461760 Z |
6733 | && (tmp = intuit_method(s, gv, cv))) { |
6734 | op_free(rv2cv_op); | |
78cdf107 Z |
6735 | if (tmp == METHOD && !PL_lex_allbrackets && |
6736 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6737 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 6738 | return REPORT(tmp); |
f7461760 | 6739 | } |
93a17b20 | 6740 | |
8990e307 LW |
6741 | /* Not a method, so call it a subroutine (if defined) */ |
6742 | ||
5069cc75 | 6743 | if (cv) { |
9b387841 NC |
6744 | if (lastchar == '-') |
6745 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
6746 | "Ambiguous use of -%s resolved as -&%s()", | |
6747 | PL_tokenbuf, PL_tokenbuf); | |
89bfa8cd | 6748 | /* Check for a constant sub */ |
f7461760 | 6749 | if ((sv = cv_const_sv(cv))) { |
96e4d5b1 | 6750 | its_constant: |
f7461760 | 6751 | op_free(rv2cv_op); |
6154021b RGS |
6752 | SvREFCNT_dec(((SVOP*)pl_yylval.opval)->op_sv); |
6753 | ((SVOP*)pl_yylval.opval)->op_sv = SvREFCNT_inc_simple(sv); | |
6754 | pl_yylval.opval->op_private = 0; | |
6b7c6d95 | 6755 | pl_yylval.opval->op_flags |= OPf_SPECIAL; |
96e4d5b1 | 6756 | TOKEN(WORD); |
89bfa8cd | 6757 | } |
6758 | ||
6154021b | 6759 | op_free(pl_yylval.opval); |
f7461760 | 6760 | pl_yylval.opval = rv2cv_op; |
6154021b | 6761 | pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 6762 | PL_last_lop = PL_oldbufptr; |
bf848113 | 6763 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 | 6764 | /* Is there a prototype? */ |
5db06880 NC |
6765 | if ( |
6766 | #ifdef PERL_MAD | |
6767 | cv && | |
6768 | #endif | |
d9f2850e RGS |
6769 | SvPOK(cv)) |
6770 | { | |
5f66b61c | 6771 | STRLEN protolen; |
daba3364 | 6772 | const char *proto = SvPV_const(MUTABLE_SV(cv), protolen); |
5f66b61c | 6773 | if (!protolen) |
4633a7c4 | 6774 | TERM(FUNC0SUB); |
0f5d0394 AE |
6775 | while (*proto == ';') |
6776 | proto++; | |
649d02de FC |
6777 | if ( |
6778 | ( | |
6779 | ( | |
6780 | *proto == '$' || *proto == '_' | |
c035a075 | 6781 | || *proto == '*' || *proto == '+' |
649d02de FC |
6782 | ) |
6783 | && proto[1] == '\0' | |
6784 | ) | |
6785 | || ( | |
6786 | *proto == '\\' && proto[1] && proto[2] == '\0' | |
6787 | ) | |
6788 | ) | |
6789 | OPERATOR(UNIOPSUB); | |
6790 | if (*proto == '\\' && proto[1] == '[') { | |
6791 | const char *p = proto + 2; | |
6792 | while(*p && *p != ']') | |
6793 | ++p; | |
6794 | if(*p == ']' && !p[1]) OPERATOR(UNIOPSUB); | |
6795 | } | |
7a52d87a | 6796 | if (*proto == '&' && *s == '{') { |
49a54bbe NC |
6797 | if (PL_curstash) |
6798 | sv_setpvs(PL_subname, "__ANON__"); | |
6799 | else | |
6800 | sv_setpvs(PL_subname, "__ANON__::__ANON__"); | |
78cdf107 Z |
6801 | if (!PL_lex_allbrackets && |
6802 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6803 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
4633a7c4 LW |
6804 | PREBLOCK(LSTOPSUB); |
6805 | } | |
a9ef352a | 6806 | } |
5db06880 NC |
6807 | #ifdef PERL_MAD |
6808 | { | |
6809 | if (PL_madskills) { | |
cd81e915 NC |
6810 | PL_nextwhite = PL_thiswhite; |
6811 | PL_thiswhite = 0; | |
5db06880 | 6812 | } |
cd81e915 | 6813 | start_force(PL_curforce); |
6154021b | 6814 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
5db06880 NC |
6815 | PL_expect = XTERM; |
6816 | if (PL_madskills) { | |
cd81e915 NC |
6817 | PL_nextwhite = nextPL_nextwhite; |
6818 | curmad('X', PL_thistoken); | |
6b29d1f5 | 6819 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
6820 | } |
6821 | force_next(WORD); | |
78cdf107 Z |
6822 | if (!PL_lex_allbrackets && |
6823 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6824 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
5db06880 NC |
6825 | TOKEN(NOAMP); |
6826 | } | |
6827 | } | |
6828 | ||
6829 | /* Guess harder when madskills require "best effort". */ | |
6830 | if (PL_madskills && (!gv || !GvCVu(gv))) { | |
6831 | int probable_sub = 0; | |
6832 | if (strchr("\"'`$@%0123456789!*+{[<", *s)) | |
6833 | probable_sub = 1; | |
6834 | else if (isALPHA(*s)) { | |
6835 | char tmpbuf[1024]; | |
6836 | STRLEN tmplen; | |
6837 | d = s; | |
6838 | d = scan_word(d, tmpbuf, sizeof tmpbuf, TRUE, &tmplen); | |
5458a98a | 6839 | if (!keyword(tmpbuf, tmplen, 0)) |
5db06880 NC |
6840 | probable_sub = 1; |
6841 | else { | |
6842 | while (d < PL_bufend && isSPACE(*d)) | |
6843 | d++; | |
6844 | if (*d == '=' && d[1] == '>') | |
6845 | probable_sub = 1; | |
6846 | } | |
6847 | } | |
6848 | if (probable_sub) { | |
7a6d04f4 | 6849 | gv = gv_fetchpv(PL_tokenbuf, GV_ADD, SVt_PVCV); |
6154021b | 6850 | op_free(pl_yylval.opval); |
f7461760 | 6851 | pl_yylval.opval = rv2cv_op; |
6154021b | 6852 | pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
5db06880 NC |
6853 | PL_last_lop = PL_oldbufptr; |
6854 | PL_last_lop_op = OP_ENTERSUB; | |
cd81e915 NC |
6855 | PL_nextwhite = PL_thiswhite; |
6856 | PL_thiswhite = 0; | |
6857 | start_force(PL_curforce); | |
6154021b | 6858 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
5db06880 | 6859 | PL_expect = XTERM; |
cd81e915 NC |
6860 | PL_nextwhite = nextPL_nextwhite; |
6861 | curmad('X', PL_thistoken); | |
6b29d1f5 | 6862 | PL_thistoken = newSVpvs(""); |
5db06880 | 6863 | force_next(WORD); |
78cdf107 Z |
6864 | if (!PL_lex_allbrackets && |
6865 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6866 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
5db06880 NC |
6867 | TOKEN(NOAMP); |
6868 | } | |
6869 | #else | |
6154021b | 6870 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
3280af22 | 6871 | PL_expect = XTERM; |
8990e307 | 6872 | force_next(WORD); |
78cdf107 Z |
6873 | if (!PL_lex_allbrackets && |
6874 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6875 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
8990e307 | 6876 | TOKEN(NOAMP); |
5db06880 | 6877 | #endif |
8990e307 | 6878 | } |
748a9306 | 6879 | |
8990e307 LW |
6880 | /* Call it a bare word */ |
6881 | ||
5603f27d | 6882 | if (PL_hints & HINT_STRICT_SUBS) |
6154021b | 6883 | pl_yylval.opval->op_private |= OPpCONST_STRICT; |
5603f27d | 6884 | else { |
9a073a1d RGS |
6885 | bareword: |
6886 | /* after "print" and similar functions (corresponding to | |
6887 | * "F? L" in opcode.pl), whatever wasn't already parsed as | |
6888 | * a filehandle should be subject to "strict subs". | |
6889 | * Likewise for the optional indirect-object argument to system | |
6890 | * or exec, which can't be a bareword */ | |
6891 | if ((PL_last_lop_op == OP_PRINT | |
6892 | || PL_last_lop_op == OP_PRTF | |
6893 | || PL_last_lop_op == OP_SAY | |
6894 | || PL_last_lop_op == OP_SYSTEM | |
6895 | || PL_last_lop_op == OP_EXEC) | |
6896 | && (PL_hints & HINT_STRICT_SUBS)) | |
6897 | pl_yylval.opval->op_private |= OPpCONST_STRICT; | |
041457d9 DM |
6898 | if (lastchar != '-') { |
6899 | if (ckWARN(WARN_RESERVED)) { | |
c35e046a AL |
6900 | d = PL_tokenbuf; |
6901 | while (isLOWER(*d)) | |
6902 | d++; | |
da51bb9b | 6903 | if (!*d && !gv_stashpv(PL_tokenbuf, 0)) |
9014280d | 6904 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
6905 | PL_tokenbuf); |
6906 | } | |
748a9306 LW |
6907 | } |
6908 | } | |
f7461760 | 6909 | op_free(rv2cv_op); |
c3e0f903 GS |
6910 | |
6911 | safe_bareword: | |
9b387841 NC |
6912 | if ((lastchar == '*' || lastchar == '%' || lastchar == '&')) { |
6913 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
6914 | "Operator or semicolon missing before %c%s", | |
6915 | lastchar, PL_tokenbuf); | |
6916 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
6917 | "Ambiguous use of %c resolved as operator %c", | |
6918 | lastchar, lastchar); | |
748a9306 | 6919 | } |
93a17b20 | 6920 | TOKEN(WORD); |
79072805 | 6921 | } |
79072805 | 6922 | |
68dc0745 | 6923 | case KEY___FILE__: |
7eb971ee | 6924 | FUN0OP( |
14f0f125 | 6925 | (OP*)newSVOP(OP_CONST, 0, newSVpv(CopFILE(PL_curcop),0)) |
7eb971ee | 6926 | ); |
46fc3d4c | 6927 | |
79072805 | 6928 | case KEY___LINE__: |
7eb971ee FC |
6929 | FUN0OP( |
6930 | (OP*)newSVOP(OP_CONST, 0, | |
6931 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))) | |
6932 | ); | |
68dc0745 | 6933 | |
6934 | case KEY___PACKAGE__: | |
7eb971ee FC |
6935 | FUN0OP( |
6936 | (OP*)newSVOP(OP_CONST, 0, | |
3280af22 | 6937 | (PL_curstash |
5aaec2b4 | 6938 | ? newSVhek(HvNAME_HEK(PL_curstash)) |
7eb971ee FC |
6939 | : &PL_sv_undef)) |
6940 | ); | |
79072805 | 6941 | |
e50aee73 | 6942 | case KEY___DATA__: |
79072805 LW |
6943 | case KEY___END__: { |
6944 | GV *gv; | |
3280af22 | 6945 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
bfed75c6 | 6946 | const char *pname = "main"; |
3280af22 | 6947 | if (PL_tokenbuf[2] == 'D') |
bfcb3514 | 6948 | pname = HvNAME_get(PL_curstash ? PL_curstash : PL_defstash); |
f776e3cd NC |
6949 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), GV_ADD, |
6950 | SVt_PVIO); | |
a5f75d66 | 6951 | GvMULTI_on(gv); |
79072805 | 6952 | if (!GvIO(gv)) |
a0d0e21e | 6953 | GvIOp(gv) = newIO(); |
3280af22 | 6954 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
6955 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
6956 | { | |
f54cb97a | 6957 | const int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
6958 | fcntl(fd,F_SETFD,fd >= 3); |
6959 | } | |
79072805 | 6960 | #endif |
fd049845 | 6961 | /* Mark this internal pseudo-handle as clean */ |
6962 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
4c84d7f2 | 6963 | if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 6964 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 6965 | else |
50952442 | 6966 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
6967 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
6968 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 6969 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 6970 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
6971 | if (PL_bufend-PL_bufptr > 2 |
6972 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
6973 | { |
6974 | Off_t loc = 0; | |
50952442 | 6975 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
6976 | loc = PerlIO_tell(PL_rsfp); |
6977 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
6978 | } | |
2986a63f JH |
6979 | #ifdef NETWARE |
6980 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
6981 | #else | |
c39cd008 | 6982 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 6983 | #endif /* NETWARE */ |
c39cd008 GS |
6984 | if (loc > 0) |
6985 | PerlIO_seek(PL_rsfp, loc, 0); | |
6986 | } | |
6987 | } | |
6988 | #endif | |
7948272d | 6989 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
6990 | if (!IN_BYTES) { |
6991 | if (UTF) | |
6992 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
6993 | else if (PL_encoding) { | |
6994 | SV *name; | |
6995 | dSP; | |
6996 | ENTER; | |
6997 | SAVETMPS; | |
6998 | PUSHMARK(sp); | |
6999 | EXTEND(SP, 1); | |
7000 | XPUSHs(PL_encoding); | |
7001 | PUTBACK; | |
7002 | call_method("name", G_SCALAR); | |
7003 | SPAGAIN; | |
7004 | name = POPs; | |
7005 | PUTBACK; | |
bfed75c6 | 7006 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, |
52d2e0f4 | 7007 | Perl_form(aTHX_ ":encoding(%"SVf")", |
be2597df | 7008 | SVfARG(name))); |
52d2e0f4 JH |
7009 | FREETMPS; |
7010 | LEAVE; | |
7011 | } | |
7012 | } | |
7948272d | 7013 | #endif |
5db06880 NC |
7014 | #ifdef PERL_MAD |
7015 | if (PL_madskills) { | |
cd81e915 NC |
7016 | if (PL_realtokenstart >= 0) { |
7017 | char *tstart = SvPVX(PL_linestr) + PL_realtokenstart; | |
7018 | if (!PL_endwhite) | |
6b29d1f5 | 7019 | PL_endwhite = newSVpvs(""); |
cd81e915 NC |
7020 | sv_catsv(PL_endwhite, PL_thiswhite); |
7021 | PL_thiswhite = 0; | |
7022 | sv_catpvn(PL_endwhite, tstart, PL_bufend - tstart); | |
7023 | PL_realtokenstart = -1; | |
5db06880 | 7024 | } |
5cc814fd NC |
7025 | while ((s = filter_gets(PL_endwhite, SvCUR(PL_endwhite))) |
7026 | != NULL) ; | |
5db06880 NC |
7027 | } |
7028 | #endif | |
4608196e | 7029 | PL_rsfp = NULL; |
79072805 LW |
7030 | } |
7031 | goto fake_eof; | |
e929a76b | 7032 | } |
de3bb511 | 7033 | |
8990e307 | 7034 | case KEY_AUTOLOAD: |
ed6116ce | 7035 | case KEY_DESTROY: |
79072805 | 7036 | case KEY_BEGIN: |
3c10abe3 | 7037 | case KEY_UNITCHECK: |
7d30b5c4 | 7038 | case KEY_CHECK: |
7d07dbc2 | 7039 | case KEY_INIT: |
7d30b5c4 | 7040 | case KEY_END: |
3280af22 NIS |
7041 | if (PL_expect == XSTATE) { |
7042 | s = PL_bufptr; | |
93a17b20 | 7043 | goto really_sub; |
79072805 LW |
7044 | } |
7045 | goto just_a_word; | |
7046 | ||
a0d0e21e LW |
7047 | case KEY_CORE: |
7048 | if (*s == ':' && s[1] == ':') { | |
7049 | s += 2; | |
748a9306 | 7050 | d = s; |
3280af22 | 7051 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
9dcb8368 | 7052 | if (!(tmp = keyword(PL_tokenbuf, len, 1))) |
6798c92b | 7053 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); |
a0d0e21e LW |
7054 | if (tmp < 0) |
7055 | tmp = -tmp; | |
a5c70c4d | 7056 | else if (tmp == KEY_require || tmp == KEY_do) |
a72a1c8b | 7057 | /* that's a way to remember we saw "CORE::" */ |
850e8516 | 7058 | orig_keyword = tmp; |
a0d0e21e LW |
7059 | goto reserved_word; |
7060 | } | |
7061 | goto just_a_word; | |
7062 | ||
463ee0b2 LW |
7063 | case KEY_abs: |
7064 | UNI(OP_ABS); | |
7065 | ||
79072805 LW |
7066 | case KEY_alarm: |
7067 | UNI(OP_ALARM); | |
7068 | ||
7069 | case KEY_accept: | |
a0d0e21e | 7070 | LOP(OP_ACCEPT,XTERM); |
79072805 | 7071 | |
463ee0b2 | 7072 | case KEY_and: |
78cdf107 Z |
7073 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
7074 | return REPORT(0); | |
463ee0b2 LW |
7075 | OPERATOR(ANDOP); |
7076 | ||
79072805 | 7077 | case KEY_atan2: |
a0d0e21e | 7078 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 7079 | |
79072805 | 7080 | case KEY_bind: |
a0d0e21e | 7081 | LOP(OP_BIND,XTERM); |
79072805 LW |
7082 | |
7083 | case KEY_binmode: | |
1c1fc3ea | 7084 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
7085 | |
7086 | case KEY_bless: | |
a0d0e21e | 7087 | LOP(OP_BLESS,XTERM); |
79072805 | 7088 | |
0d863452 RH |
7089 | case KEY_break: |
7090 | FUN0(OP_BREAK); | |
7091 | ||
79072805 LW |
7092 | case KEY_chop: |
7093 | UNI(OP_CHOP); | |
7094 | ||
7095 | case KEY_continue: | |
0d863452 RH |
7096 | /* We have to disambiguate the two senses of |
7097 | "continue". If the next token is a '{' then | |
7098 | treat it as the start of a continue block; | |
7099 | otherwise treat it as a control operator. | |
7100 | */ | |
7101 | s = skipspace(s); | |
7102 | if (*s == '{') | |
79072805 | 7103 | PREBLOCK(CONTINUE); |
0d863452 RH |
7104 | else |
7105 | FUN0(OP_CONTINUE); | |
79072805 LW |
7106 | |
7107 | case KEY_chdir: | |
fafc274c NC |
7108 | /* may use HOME */ |
7109 | (void)gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV); | |
79072805 LW |
7110 | UNI(OP_CHDIR); |
7111 | ||
7112 | case KEY_close: | |
7113 | UNI(OP_CLOSE); | |
7114 | ||
7115 | case KEY_closedir: | |
7116 | UNI(OP_CLOSEDIR); | |
7117 | ||
7118 | case KEY_cmp: | |
78cdf107 Z |
7119 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7120 | return REPORT(0); | |
79072805 LW |
7121 | Eop(OP_SCMP); |
7122 | ||
7123 | case KEY_caller: | |
7124 | UNI(OP_CALLER); | |
7125 | ||
7126 | case KEY_crypt: | |
7127 | #ifdef FCRYPT | |
f4c556ac GS |
7128 | if (!PL_cryptseen) { |
7129 | PL_cryptseen = TRUE; | |
de3bb511 | 7130 | init_des(); |
f4c556ac | 7131 | } |
a687059c | 7132 | #endif |
a0d0e21e | 7133 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
7134 | |
7135 | case KEY_chmod: | |
a0d0e21e | 7136 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
7137 | |
7138 | case KEY_chown: | |
a0d0e21e | 7139 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
7140 | |
7141 | case KEY_connect: | |
a0d0e21e | 7142 | LOP(OP_CONNECT,XTERM); |
79072805 | 7143 | |
463ee0b2 LW |
7144 | case KEY_chr: |
7145 | UNI(OP_CHR); | |
7146 | ||
79072805 LW |
7147 | case KEY_cos: |
7148 | UNI(OP_COS); | |
7149 | ||
7150 | case KEY_chroot: | |
7151 | UNI(OP_CHROOT); | |
7152 | ||
0d863452 RH |
7153 | case KEY_default: |
7154 | PREBLOCK(DEFAULT); | |
7155 | ||
79072805 | 7156 | case KEY_do: |
29595ff2 | 7157 | s = SKIPSPACE1(s); |
79072805 | 7158 | if (*s == '{') |
a0d0e21e | 7159 | PRETERMBLOCK(DO); |
79072805 | 7160 | if (*s != '\'') |
89c5585f | 7161 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
850e8516 RGS |
7162 | if (orig_keyword == KEY_do) { |
7163 | orig_keyword = 0; | |
6154021b | 7164 | pl_yylval.ival = 1; |
850e8516 RGS |
7165 | } |
7166 | else | |
6154021b | 7167 | pl_yylval.ival = 0; |
378cc40b | 7168 | OPERATOR(DO); |
79072805 LW |
7169 | |
7170 | case KEY_die: | |
3280af22 | 7171 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 7172 | LOP(OP_DIE,XTERM); |
79072805 LW |
7173 | |
7174 | case KEY_defined: | |
7175 | UNI(OP_DEFINED); | |
7176 | ||
7177 | case KEY_delete: | |
a0d0e21e | 7178 | UNI(OP_DELETE); |
79072805 LW |
7179 | |
7180 | case KEY_dbmopen: | |
74e8ce34 NC |
7181 | Perl_populate_isa(aTHX_ STR_WITH_LEN("AnyDBM_File::ISA"), |
7182 | STR_WITH_LEN("NDBM_File::"), | |
7183 | STR_WITH_LEN("DB_File::"), | |
7184 | STR_WITH_LEN("GDBM_File::"), | |
7185 | STR_WITH_LEN("SDBM_File::"), | |
7186 | STR_WITH_LEN("ODBM_File::"), | |
7187 | NULL); | |
a0d0e21e | 7188 | LOP(OP_DBMOPEN,XTERM); |
79072805 LW |
7189 | |
7190 | case KEY_dbmclose: | |
7191 | UNI(OP_DBMCLOSE); | |
7192 | ||
7193 | case KEY_dump: | |
a0d0e21e | 7194 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7195 | LOOPX(OP_DUMP); |
7196 | ||
7197 | case KEY_else: | |
7198 | PREBLOCK(ELSE); | |
7199 | ||
7200 | case KEY_elsif: | |
6154021b | 7201 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
7202 | OPERATOR(ELSIF); |
7203 | ||
7204 | case KEY_eq: | |
78cdf107 Z |
7205 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7206 | return REPORT(0); | |
79072805 LW |
7207 | Eop(OP_SEQ); |
7208 | ||
a0d0e21e LW |
7209 | case KEY_exists: |
7210 | UNI(OP_EXISTS); | |
4e553d73 | 7211 | |
79072805 | 7212 | case KEY_exit: |
5db06880 NC |
7213 | if (PL_madskills) |
7214 | UNI(OP_INT); | |
79072805 LW |
7215 | UNI(OP_EXIT); |
7216 | ||
7217 | case KEY_eval: | |
29595ff2 | 7218 | s = SKIPSPACE1(s); |
32e2a35d RGS |
7219 | if (*s == '{') { /* block eval */ |
7220 | PL_expect = XTERMBLOCK; | |
7221 | UNIBRACK(OP_ENTERTRY); | |
7222 | } | |
7223 | else { /* string eval */ | |
7224 | PL_expect = XTERM; | |
7225 | UNIBRACK(OP_ENTEREVAL); | |
7226 | } | |
79072805 LW |
7227 | |
7228 | case KEY_eof: | |
7229 | UNI(OP_EOF); | |
7230 | ||
7231 | case KEY_exp: | |
7232 | UNI(OP_EXP); | |
7233 | ||
7234 | case KEY_each: | |
7235 | UNI(OP_EACH); | |
7236 | ||
7237 | case KEY_exec: | |
a0d0e21e | 7238 | LOP(OP_EXEC,XREF); |
79072805 LW |
7239 | |
7240 | case KEY_endhostent: | |
7241 | FUN0(OP_EHOSTENT); | |
7242 | ||
7243 | case KEY_endnetent: | |
7244 | FUN0(OP_ENETENT); | |
7245 | ||
7246 | case KEY_endservent: | |
7247 | FUN0(OP_ESERVENT); | |
7248 | ||
7249 | case KEY_endprotoent: | |
7250 | FUN0(OP_EPROTOENT); | |
7251 | ||
7252 | case KEY_endpwent: | |
7253 | FUN0(OP_EPWENT); | |
7254 | ||
7255 | case KEY_endgrent: | |
7256 | FUN0(OP_EGRENT); | |
7257 | ||
7258 | case KEY_for: | |
7259 | case KEY_foreach: | |
78cdf107 Z |
7260 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
7261 | return REPORT(0); | |
6154021b | 7262 | pl_yylval.ival = CopLINE(PL_curcop); |
29595ff2 | 7263 | s = SKIPSPACE1(s); |
7e2040f0 | 7264 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 7265 | char *p = s; |
5db06880 NC |
7266 | #ifdef PERL_MAD |
7267 | int soff = s - SvPVX(PL_linestr); /* for skipspace realloc */ | |
7268 | #endif | |
7269 | ||
3280af22 | 7270 | if ((PL_bufend - p) >= 3 && |
55497cff | 7271 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
7272 | p += 2; | |
77ca0c92 LW |
7273 | else if ((PL_bufend - p) >= 4 && |
7274 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
7275 | p += 3; | |
29595ff2 | 7276 | p = PEEKSPACE(p); |
7e2040f0 | 7277 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
7278 | p = scan_ident(p, PL_bufend, |
7279 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
29595ff2 | 7280 | p = PEEKSPACE(p); |
77ca0c92 LW |
7281 | } |
7282 | if (*p != '$') | |
cea2e8a9 | 7283 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
5db06880 NC |
7284 | #ifdef PERL_MAD |
7285 | s = SvPVX(PL_linestr) + soff; | |
7286 | #endif | |
55497cff | 7287 | } |
79072805 LW |
7288 | OPERATOR(FOR); |
7289 | ||
7290 | case KEY_formline: | |
a0d0e21e | 7291 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
7292 | |
7293 | case KEY_fork: | |
7294 | FUN0(OP_FORK); | |
7295 | ||
7296 | case KEY_fcntl: | |
a0d0e21e | 7297 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
7298 | |
7299 | case KEY_fileno: | |
7300 | UNI(OP_FILENO); | |
7301 | ||
7302 | case KEY_flock: | |
a0d0e21e | 7303 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
7304 | |
7305 | case KEY_gt: | |
78cdf107 Z |
7306 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7307 | return REPORT(0); | |
79072805 LW |
7308 | Rop(OP_SGT); |
7309 | ||
7310 | case KEY_ge: | |
78cdf107 Z |
7311 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7312 | return REPORT(0); | |
79072805 LW |
7313 | Rop(OP_SGE); |
7314 | ||
7315 | case KEY_grep: | |
2c38e13d | 7316 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
7317 | |
7318 | case KEY_goto: | |
a0d0e21e | 7319 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7320 | LOOPX(OP_GOTO); |
7321 | ||
7322 | case KEY_gmtime: | |
7323 | UNI(OP_GMTIME); | |
7324 | ||
7325 | case KEY_getc: | |
6f33ba73 | 7326 | UNIDOR(OP_GETC); |
79072805 LW |
7327 | |
7328 | case KEY_getppid: | |
7329 | FUN0(OP_GETPPID); | |
7330 | ||
7331 | case KEY_getpgrp: | |
7332 | UNI(OP_GETPGRP); | |
7333 | ||
7334 | case KEY_getpriority: | |
a0d0e21e | 7335 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
7336 | |
7337 | case KEY_getprotobyname: | |
7338 | UNI(OP_GPBYNAME); | |
7339 | ||
7340 | case KEY_getprotobynumber: | |
a0d0e21e | 7341 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
7342 | |
7343 | case KEY_getprotoent: | |
7344 | FUN0(OP_GPROTOENT); | |
7345 | ||
7346 | case KEY_getpwent: | |
7347 | FUN0(OP_GPWENT); | |
7348 | ||
7349 | case KEY_getpwnam: | |
ff68c719 | 7350 | UNI(OP_GPWNAM); |
79072805 LW |
7351 | |
7352 | case KEY_getpwuid: | |
ff68c719 | 7353 | UNI(OP_GPWUID); |
79072805 LW |
7354 | |
7355 | case KEY_getpeername: | |
7356 | UNI(OP_GETPEERNAME); | |
7357 | ||
7358 | case KEY_gethostbyname: | |
7359 | UNI(OP_GHBYNAME); | |
7360 | ||
7361 | case KEY_gethostbyaddr: | |
a0d0e21e | 7362 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
7363 | |
7364 | case KEY_gethostent: | |
7365 | FUN0(OP_GHOSTENT); | |
7366 | ||
7367 | case KEY_getnetbyname: | |
7368 | UNI(OP_GNBYNAME); | |
7369 | ||
7370 | case KEY_getnetbyaddr: | |
a0d0e21e | 7371 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
7372 | |
7373 | case KEY_getnetent: | |
7374 | FUN0(OP_GNETENT); | |
7375 | ||
7376 | case KEY_getservbyname: | |
a0d0e21e | 7377 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
7378 | |
7379 | case KEY_getservbyport: | |
a0d0e21e | 7380 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
7381 | |
7382 | case KEY_getservent: | |
7383 | FUN0(OP_GSERVENT); | |
7384 | ||
7385 | case KEY_getsockname: | |
7386 | UNI(OP_GETSOCKNAME); | |
7387 | ||
7388 | case KEY_getsockopt: | |
a0d0e21e | 7389 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
7390 | |
7391 | case KEY_getgrent: | |
7392 | FUN0(OP_GGRENT); | |
7393 | ||
7394 | case KEY_getgrnam: | |
ff68c719 | 7395 | UNI(OP_GGRNAM); |
79072805 LW |
7396 | |
7397 | case KEY_getgrgid: | |
ff68c719 | 7398 | UNI(OP_GGRGID); |
79072805 LW |
7399 | |
7400 | case KEY_getlogin: | |
7401 | FUN0(OP_GETLOGIN); | |
7402 | ||
0d863452 | 7403 | case KEY_given: |
6154021b | 7404 | pl_yylval.ival = CopLINE(PL_curcop); |
0d863452 RH |
7405 | OPERATOR(GIVEN); |
7406 | ||
93a17b20 | 7407 | case KEY_glob: |
a0d0e21e | 7408 | LOP(OP_GLOB,XTERM); |
93a17b20 | 7409 | |
79072805 LW |
7410 | case KEY_hex: |
7411 | UNI(OP_HEX); | |
7412 | ||
7413 | case KEY_if: | |
78cdf107 Z |
7414 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
7415 | return REPORT(0); | |
6154021b | 7416 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
7417 | OPERATOR(IF); |
7418 | ||
7419 | case KEY_index: | |
a0d0e21e | 7420 | LOP(OP_INDEX,XTERM); |
79072805 LW |
7421 | |
7422 | case KEY_int: | |
7423 | UNI(OP_INT); | |
7424 | ||
7425 | case KEY_ioctl: | |
a0d0e21e | 7426 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
7427 | |
7428 | case KEY_join: | |
a0d0e21e | 7429 | LOP(OP_JOIN,XTERM); |
79072805 LW |
7430 | |
7431 | case KEY_keys: | |
7432 | UNI(OP_KEYS); | |
7433 | ||
7434 | case KEY_kill: | |
a0d0e21e | 7435 | LOP(OP_KILL,XTERM); |
79072805 LW |
7436 | |
7437 | case KEY_last: | |
a0d0e21e | 7438 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 7439 | LOOPX(OP_LAST); |
4e553d73 | 7440 | |
79072805 LW |
7441 | case KEY_lc: |
7442 | UNI(OP_LC); | |
7443 | ||
7444 | case KEY_lcfirst: | |
7445 | UNI(OP_LCFIRST); | |
7446 | ||
7447 | case KEY_local: | |
6154021b | 7448 | pl_yylval.ival = 0; |
79072805 LW |
7449 | OPERATOR(LOCAL); |
7450 | ||
7451 | case KEY_length: | |
7452 | UNI(OP_LENGTH); | |
7453 | ||
7454 | case KEY_lt: | |
78cdf107 Z |
7455 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7456 | return REPORT(0); | |
79072805 LW |
7457 | Rop(OP_SLT); |
7458 | ||
7459 | case KEY_le: | |
78cdf107 Z |
7460 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7461 | return REPORT(0); | |
79072805 LW |
7462 | Rop(OP_SLE); |
7463 | ||
7464 | case KEY_localtime: | |
7465 | UNI(OP_LOCALTIME); | |
7466 | ||
7467 | case KEY_log: | |
7468 | UNI(OP_LOG); | |
7469 | ||
7470 | case KEY_link: | |
a0d0e21e | 7471 | LOP(OP_LINK,XTERM); |
79072805 LW |
7472 | |
7473 | case KEY_listen: | |
a0d0e21e | 7474 | LOP(OP_LISTEN,XTERM); |
79072805 | 7475 | |
c0329465 MB |
7476 | case KEY_lock: |
7477 | UNI(OP_LOCK); | |
7478 | ||
79072805 LW |
7479 | case KEY_lstat: |
7480 | UNI(OP_LSTAT); | |
7481 | ||
7482 | case KEY_m: | |
8782bef2 | 7483 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
7484 | TERM(sublex_start()); |
7485 | ||
a0d0e21e | 7486 | case KEY_map: |
2c38e13d | 7487 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 7488 | |
79072805 | 7489 | case KEY_mkdir: |
a0d0e21e | 7490 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
7491 | |
7492 | case KEY_msgctl: | |
a0d0e21e | 7493 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
7494 | |
7495 | case KEY_msgget: | |
a0d0e21e | 7496 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
7497 | |
7498 | case KEY_msgrcv: | |
a0d0e21e | 7499 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
7500 | |
7501 | case KEY_msgsnd: | |
a0d0e21e | 7502 | LOP(OP_MSGSND,XTERM); |
79072805 | 7503 | |
77ca0c92 | 7504 | case KEY_our: |
93a17b20 | 7505 | case KEY_my: |
952306ac | 7506 | case KEY_state: |
eac04b2e | 7507 | PL_in_my = (U16)tmp; |
29595ff2 | 7508 | s = SKIPSPACE1(s); |
7e2040f0 | 7509 | if (isIDFIRST_lazy_if(s,UTF)) { |
5db06880 NC |
7510 | #ifdef PERL_MAD |
7511 | char* start = s; | |
7512 | #endif | |
3280af22 | 7513 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
7514 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
7515 | goto really_sub; | |
def3634b | 7516 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 7517 | if (!PL_in_my_stash) { |
c750a3ec | 7518 | char tmpbuf[1024]; |
3280af22 | 7519 | PL_bufptr = s; |
d9fad198 | 7520 | my_snprintf(tmpbuf, sizeof(tmpbuf), "No such class %.1000s", PL_tokenbuf); |
c750a3ec MB |
7521 | yyerror(tmpbuf); |
7522 | } | |
5db06880 NC |
7523 | #ifdef PERL_MAD |
7524 | if (PL_madskills) { /* just add type to declarator token */ | |
cd81e915 NC |
7525 | sv_catsv(PL_thistoken, PL_nextwhite); |
7526 | PL_nextwhite = 0; | |
7527 | sv_catpvn(PL_thistoken, start, s - start); | |
5db06880 NC |
7528 | } |
7529 | #endif | |
c750a3ec | 7530 | } |
6154021b | 7531 | pl_yylval.ival = 1; |
55497cff | 7532 | OPERATOR(MY); |
93a17b20 | 7533 | |
79072805 | 7534 | case KEY_next: |
a0d0e21e | 7535 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7536 | LOOPX(OP_NEXT); |
7537 | ||
7538 | case KEY_ne: | |
78cdf107 Z |
7539 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7540 | return REPORT(0); | |
79072805 LW |
7541 | Eop(OP_SNE); |
7542 | ||
a0d0e21e | 7543 | case KEY_no: |
468aa647 | 7544 | s = tokenize_use(0, s); |
a0d0e21e LW |
7545 | OPERATOR(USE); |
7546 | ||
7547 | case KEY_not: | |
29595ff2 | 7548 | if (*s == '(' || (s = SKIPSPACE1(s), *s == '(')) |
2d2e263d | 7549 | FUN1(OP_NOT); |
78cdf107 Z |
7550 | else { |
7551 | if (!PL_lex_allbrackets && | |
7552 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7553 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
2d2e263d | 7554 | OPERATOR(NOTOP); |
78cdf107 | 7555 | } |
a0d0e21e | 7556 | |
79072805 | 7557 | case KEY_open: |
29595ff2 | 7558 | s = SKIPSPACE1(s); |
7e2040f0 | 7559 | if (isIDFIRST_lazy_if(s,UTF)) { |
f54cb97a | 7560 | const char *t; |
c35e046a AL |
7561 | for (d = s; isALNUM_lazy_if(d,UTF);) |
7562 | d++; | |
7563 | for (t=d; isSPACE(*t);) | |
7564 | t++; | |
e2ab214b | 7565 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) |
66fbe8fb HS |
7566 | /* [perl #16184] */ |
7567 | && !(t[0] == '=' && t[1] == '>') | |
7568 | ) { | |
5f66b61c | 7569 | int parms_len = (int)(d-s); |
9014280d | 7570 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 | 7571 | "Precedence problem: open %.*s should be open(%.*s)", |
5f66b61c | 7572 | parms_len, s, parms_len, s); |
66fbe8fb | 7573 | } |
93a17b20 | 7574 | } |
a0d0e21e | 7575 | LOP(OP_OPEN,XTERM); |
79072805 | 7576 | |
463ee0b2 | 7577 | case KEY_or: |
78cdf107 Z |
7578 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
7579 | return REPORT(0); | |
6154021b | 7580 | pl_yylval.ival = OP_OR; |
463ee0b2 LW |
7581 | OPERATOR(OROP); |
7582 | ||
79072805 LW |
7583 | case KEY_ord: |
7584 | UNI(OP_ORD); | |
7585 | ||
7586 | case KEY_oct: | |
7587 | UNI(OP_OCT); | |
7588 | ||
7589 | case KEY_opendir: | |
a0d0e21e | 7590 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
7591 | |
7592 | case KEY_print: | |
3280af22 | 7593 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 7594 | LOP(OP_PRINT,XREF); |
79072805 LW |
7595 | |
7596 | case KEY_printf: | |
3280af22 | 7597 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 7598 | LOP(OP_PRTF,XREF); |
79072805 | 7599 | |
c07a80fd | 7600 | case KEY_prototype: |
7601 | UNI(OP_PROTOTYPE); | |
7602 | ||
79072805 | 7603 | case KEY_push: |
a0d0e21e | 7604 | LOP(OP_PUSH,XTERM); |
79072805 LW |
7605 | |
7606 | case KEY_pop: | |
6f33ba73 | 7607 | UNIDOR(OP_POP); |
79072805 | 7608 | |
a0d0e21e | 7609 | case KEY_pos: |
6f33ba73 | 7610 | UNIDOR(OP_POS); |
4e553d73 | 7611 | |
79072805 | 7612 | case KEY_pack: |
a0d0e21e | 7613 | LOP(OP_PACK,XTERM); |
79072805 LW |
7614 | |
7615 | case KEY_package: | |
a0d0e21e | 7616 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
14a86d0c | 7617 | s = SKIPSPACE1(s); |
91152fc1 | 7618 | s = force_strict_version(s); |
4e4da3ac | 7619 | PL_lex_expect = XBLOCK; |
79072805 LW |
7620 | OPERATOR(PACKAGE); |
7621 | ||
7622 | case KEY_pipe: | |
a0d0e21e | 7623 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
7624 | |
7625 | case KEY_q: | |
5db06880 | 7626 | s = scan_str(s,!!PL_madskills,FALSE); |
79072805 | 7627 | if (!s) |
d4c19fe8 | 7628 | missingterm(NULL); |
6154021b | 7629 | pl_yylval.ival = OP_CONST; |
79072805 LW |
7630 | TERM(sublex_start()); |
7631 | ||
a0d0e21e LW |
7632 | case KEY_quotemeta: |
7633 | UNI(OP_QUOTEMETA); | |
7634 | ||
ea25a9b2 Z |
7635 | case KEY_qw: { |
7636 | OP *words = NULL; | |
5db06880 | 7637 | s = scan_str(s,!!PL_madskills,FALSE); |
8990e307 | 7638 | if (!s) |
d4c19fe8 | 7639 | missingterm(NULL); |
3480a8d2 | 7640 | PL_expect = XOPERATOR; |
8127e0e3 | 7641 | if (SvCUR(PL_lex_stuff)) { |
7e03b518 EB |
7642 | int warned_comma = !ckWARN(WARN_QW); |
7643 | int warned_comment = warned_comma; | |
3280af22 | 7644 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 7645 | while (len) { |
d4c19fe8 AL |
7646 | for (; isSPACE(*d) && len; --len, ++d) |
7647 | /**/; | |
8127e0e3 | 7648 | if (len) { |
d4c19fe8 | 7649 | SV *sv; |
f54cb97a | 7650 | const char *b = d; |
7e03b518 | 7651 | if (!warned_comma || !warned_comment) { |
8127e0e3 | 7652 | for (; !isSPACE(*d) && len; --len, ++d) { |
7e03b518 | 7653 | if (!warned_comma && *d == ',') { |
9014280d | 7654 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 | 7655 | "Possible attempt to separate words with commas"); |
7e03b518 | 7656 | ++warned_comma; |
8127e0e3 | 7657 | } |
7e03b518 | 7658 | else if (!warned_comment && *d == '#') { |
9014280d | 7659 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 | 7660 | "Possible attempt to put comments in qw() list"); |
7e03b518 | 7661 | ++warned_comment; |
8127e0e3 GS |
7662 | } |
7663 | } | |
7664 | } | |
7665 | else { | |
d4c19fe8 AL |
7666 | for (; !isSPACE(*d) && len; --len, ++d) |
7667 | /**/; | |
8127e0e3 | 7668 | } |
740cce10 | 7669 | sv = newSVpvn_utf8(b, d-b, DO_UTF8(PL_lex_stuff)); |
2fcb4757 | 7670 | words = op_append_elem(OP_LIST, words, |
7948272d | 7671 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 7672 | } |
7673 | } | |
7674 | } | |
ea25a9b2 Z |
7675 | if (!words) |
7676 | words = newNULLLIST(); | |
37fd879b | 7677 | if (PL_lex_stuff) { |
8127e0e3 | 7678 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 7679 | PL_lex_stuff = NULL; |
37fd879b | 7680 | } |
ea25a9b2 Z |
7681 | PL_expect = XOPERATOR; |
7682 | pl_yylval.opval = sawparens(words); | |
7683 | TOKEN(QWLIST); | |
7684 | } | |
8990e307 | 7685 | |
79072805 | 7686 | case KEY_qq: |
5db06880 | 7687 | s = scan_str(s,!!PL_madskills,FALSE); |
79072805 | 7688 | if (!s) |
d4c19fe8 | 7689 | missingterm(NULL); |
6154021b | 7690 | pl_yylval.ival = OP_STRINGIFY; |
3280af22 | 7691 | if (SvIVX(PL_lex_stuff) == '\'') |
486ec47a | 7692 | SvIV_set(PL_lex_stuff, 0); /* qq'$foo' should interpolate */ |
79072805 LW |
7693 | TERM(sublex_start()); |
7694 | ||
8782bef2 GB |
7695 | case KEY_qr: |
7696 | s = scan_pat(s,OP_QR); | |
7697 | TERM(sublex_start()); | |
7698 | ||
79072805 | 7699 | case KEY_qx: |
5db06880 | 7700 | s = scan_str(s,!!PL_madskills,FALSE); |
79072805 | 7701 | if (!s) |
d4c19fe8 | 7702 | missingterm(NULL); |
9b201d7d | 7703 | readpipe_override(); |
79072805 LW |
7704 | TERM(sublex_start()); |
7705 | ||
7706 | case KEY_return: | |
7707 | OLDLOP(OP_RETURN); | |
7708 | ||
7709 | case KEY_require: | |
29595ff2 | 7710 | s = SKIPSPACE1(s); |
e759cc13 RGS |
7711 | if (isDIGIT(*s)) { |
7712 | s = force_version(s, FALSE); | |
a7cb1f99 | 7713 | } |
e759cc13 RGS |
7714 | else if (*s != 'v' || !isDIGIT(s[1]) |
7715 | || (s = force_version(s, TRUE), *s == 'v')) | |
7716 | { | |
a7cb1f99 GS |
7717 | *PL_tokenbuf = '\0'; |
7718 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 7719 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
da51bb9b | 7720 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), GV_ADD); |
a7cb1f99 GS |
7721 | else if (*s == '<') |
7722 | yyerror("<> should be quotes"); | |
7723 | } | |
a72a1c8b RGS |
7724 | if (orig_keyword == KEY_require) { |
7725 | orig_keyword = 0; | |
6154021b | 7726 | pl_yylval.ival = 1; |
a72a1c8b RGS |
7727 | } |
7728 | else | |
6154021b | 7729 | pl_yylval.ival = 0; |
a72a1c8b RGS |
7730 | PL_expect = XTERM; |
7731 | PL_bufptr = s; | |
7732 | PL_last_uni = PL_oldbufptr; | |
7733 | PL_last_lop_op = OP_REQUIRE; | |
7734 | s = skipspace(s); | |
7735 | return REPORT( (int)REQUIRE ); | |
79072805 LW |
7736 | |
7737 | case KEY_reset: | |
7738 | UNI(OP_RESET); | |
7739 | ||
7740 | case KEY_redo: | |
a0d0e21e | 7741 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7742 | LOOPX(OP_REDO); |
7743 | ||
7744 | case KEY_rename: | |
a0d0e21e | 7745 | LOP(OP_RENAME,XTERM); |
79072805 LW |
7746 | |
7747 | case KEY_rand: | |
7748 | UNI(OP_RAND); | |
7749 | ||
7750 | case KEY_rmdir: | |
7751 | UNI(OP_RMDIR); | |
7752 | ||
7753 | case KEY_rindex: | |
a0d0e21e | 7754 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
7755 | |
7756 | case KEY_read: | |
a0d0e21e | 7757 | LOP(OP_READ,XTERM); |
79072805 LW |
7758 | |
7759 | case KEY_readdir: | |
7760 | UNI(OP_READDIR); | |
7761 | ||
93a17b20 | 7762 | case KEY_readline: |
6f33ba73 | 7763 | UNIDOR(OP_READLINE); |
93a17b20 LW |
7764 | |
7765 | case KEY_readpipe: | |
0858480c | 7766 | UNIDOR(OP_BACKTICK); |
93a17b20 | 7767 | |
79072805 LW |
7768 | case KEY_rewinddir: |
7769 | UNI(OP_REWINDDIR); | |
7770 | ||
7771 | case KEY_recv: | |
a0d0e21e | 7772 | LOP(OP_RECV,XTERM); |
79072805 LW |
7773 | |
7774 | case KEY_reverse: | |
a0d0e21e | 7775 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
7776 | |
7777 | case KEY_readlink: | |
6f33ba73 | 7778 | UNIDOR(OP_READLINK); |
79072805 LW |
7779 | |
7780 | case KEY_ref: | |
7781 | UNI(OP_REF); | |
7782 | ||
7783 | case KEY_s: | |
7784 | s = scan_subst(s); | |
6154021b | 7785 | if (pl_yylval.opval) |
79072805 LW |
7786 | TERM(sublex_start()); |
7787 | else | |
7788 | TOKEN(1); /* force error */ | |
7789 | ||
0d863452 RH |
7790 | case KEY_say: |
7791 | checkcomma(s,PL_tokenbuf,"filehandle"); | |
7792 | LOP(OP_SAY,XREF); | |
7793 | ||
a0d0e21e LW |
7794 | case KEY_chomp: |
7795 | UNI(OP_CHOMP); | |
4e553d73 | 7796 | |
79072805 LW |
7797 | case KEY_scalar: |
7798 | UNI(OP_SCALAR); | |
7799 | ||
7800 | case KEY_select: | |
a0d0e21e | 7801 | LOP(OP_SELECT,XTERM); |
79072805 LW |
7802 | |
7803 | case KEY_seek: | |
a0d0e21e | 7804 | LOP(OP_SEEK,XTERM); |
79072805 LW |
7805 | |
7806 | case KEY_semctl: | |
a0d0e21e | 7807 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
7808 | |
7809 | case KEY_semget: | |
a0d0e21e | 7810 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
7811 | |
7812 | case KEY_semop: | |
a0d0e21e | 7813 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
7814 | |
7815 | case KEY_send: | |
a0d0e21e | 7816 | LOP(OP_SEND,XTERM); |
79072805 LW |
7817 | |
7818 | case KEY_setpgrp: | |
a0d0e21e | 7819 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
7820 | |
7821 | case KEY_setpriority: | |
a0d0e21e | 7822 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
7823 | |
7824 | case KEY_sethostent: | |
ff68c719 | 7825 | UNI(OP_SHOSTENT); |
79072805 LW |
7826 | |
7827 | case KEY_setnetent: | |
ff68c719 | 7828 | UNI(OP_SNETENT); |
79072805 LW |
7829 | |
7830 | case KEY_setservent: | |
ff68c719 | 7831 | UNI(OP_SSERVENT); |
79072805 LW |
7832 | |
7833 | case KEY_setprotoent: | |
ff68c719 | 7834 | UNI(OP_SPROTOENT); |
79072805 LW |
7835 | |
7836 | case KEY_setpwent: | |
7837 | FUN0(OP_SPWENT); | |
7838 | ||
7839 | case KEY_setgrent: | |
7840 | FUN0(OP_SGRENT); | |
7841 | ||
7842 | case KEY_seekdir: | |
a0d0e21e | 7843 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
7844 | |
7845 | case KEY_setsockopt: | |
a0d0e21e | 7846 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
7847 | |
7848 | case KEY_shift: | |
6f33ba73 | 7849 | UNIDOR(OP_SHIFT); |
79072805 LW |
7850 | |
7851 | case KEY_shmctl: | |
a0d0e21e | 7852 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
7853 | |
7854 | case KEY_shmget: | |
a0d0e21e | 7855 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
7856 | |
7857 | case KEY_shmread: | |
a0d0e21e | 7858 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
7859 | |
7860 | case KEY_shmwrite: | |
a0d0e21e | 7861 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
7862 | |
7863 | case KEY_shutdown: | |
a0d0e21e | 7864 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
7865 | |
7866 | case KEY_sin: | |
7867 | UNI(OP_SIN); | |
7868 | ||
7869 | case KEY_sleep: | |
7870 | UNI(OP_SLEEP); | |
7871 | ||
7872 | case KEY_socket: | |
a0d0e21e | 7873 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
7874 | |
7875 | case KEY_socketpair: | |
a0d0e21e | 7876 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
7877 | |
7878 | case KEY_sort: | |
3280af22 | 7879 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
29595ff2 | 7880 | s = SKIPSPACE1(s); |
79072805 | 7881 | if (*s == ';' || *s == ')') /* probably a close */ |
cea2e8a9 | 7882 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 7883 | PL_expect = XTERM; |
15f0808c | 7884 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 7885 | LOP(OP_SORT,XREF); |
79072805 LW |
7886 | |
7887 | case KEY_split: | |
a0d0e21e | 7888 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
7889 | |
7890 | case KEY_sprintf: | |
a0d0e21e | 7891 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
7892 | |
7893 | case KEY_splice: | |
a0d0e21e | 7894 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
7895 | |
7896 | case KEY_sqrt: | |
7897 | UNI(OP_SQRT); | |
7898 | ||
7899 | case KEY_srand: | |
7900 | UNI(OP_SRAND); | |
7901 | ||
7902 | case KEY_stat: | |
7903 | UNI(OP_STAT); | |
7904 | ||
7905 | case KEY_study: | |
79072805 LW |
7906 | UNI(OP_STUDY); |
7907 | ||
7908 | case KEY_substr: | |
a0d0e21e | 7909 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
7910 | |
7911 | case KEY_format: | |
7912 | case KEY_sub: | |
93a17b20 | 7913 | really_sub: |
09bef843 | 7914 | { |
3280af22 | 7915 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 7916 | SSize_t tboffset = 0; |
09bef843 | 7917 | expectation attrful; |
28cc6278 | 7918 | bool have_name, have_proto; |
f54cb97a | 7919 | const int key = tmp; |
09bef843 | 7920 | |
5db06880 NC |
7921 | #ifdef PERL_MAD |
7922 | SV *tmpwhite = 0; | |
7923 | ||
cd81e915 | 7924 | char *tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
5db06880 | 7925 | SV *subtoken = newSVpvn(tstart, s - tstart); |
cd81e915 | 7926 | PL_thistoken = 0; |
5db06880 NC |
7927 | |
7928 | d = s; | |
7929 | s = SKIPSPACE2(s,tmpwhite); | |
7930 | #else | |
09bef843 | 7931 | s = skipspace(s); |
5db06880 | 7932 | #endif |
09bef843 | 7933 | |
7e2040f0 | 7934 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
7935 | (*s == ':' && s[1] == ':')) |
7936 | { | |
5db06880 | 7937 | #ifdef PERL_MAD |
4f61fd4b | 7938 | SV *nametoke = NULL; |
5db06880 NC |
7939 | #endif |
7940 | ||
09bef843 SB |
7941 | PL_expect = XBLOCK; |
7942 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
7943 | /* remember buffer pos'n for later force_word */ |
7944 | tboffset = s - PL_oldbufptr; | |
09bef843 | 7945 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
5db06880 NC |
7946 | #ifdef PERL_MAD |
7947 | if (PL_madskills) | |
7948 | nametoke = newSVpvn(s, d - s); | |
7949 | #endif | |
6502358f NC |
7950 | if (memchr(tmpbuf, ':', len)) |
7951 | sv_setpvn(PL_subname, tmpbuf, len); | |
09bef843 SB |
7952 | else { |
7953 | sv_setsv(PL_subname,PL_curstname); | |
396482e1 | 7954 | sv_catpvs(PL_subname,"::"); |
09bef843 SB |
7955 | sv_catpvn(PL_subname,tmpbuf,len); |
7956 | } | |
09bef843 | 7957 | have_name = TRUE; |
5db06880 NC |
7958 | |
7959 | #ifdef PERL_MAD | |
7960 | ||
7961 | start_force(0); | |
7962 | CURMAD('X', nametoke); | |
7963 | CURMAD('_', tmpwhite); | |
7964 | (void) force_word(PL_oldbufptr + tboffset, WORD, | |
7965 | FALSE, TRUE, TRUE); | |
7966 | ||
7967 | s = SKIPSPACE2(d,tmpwhite); | |
7968 | #else | |
7969 | s = skipspace(d); | |
7970 | #endif | |
09bef843 | 7971 | } |
463ee0b2 | 7972 | else { |
09bef843 SB |
7973 | if (key == KEY_my) |
7974 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
7975 | PL_expect = XTERMBLOCK; | |
7976 | attrful = XATTRTERM; | |
76f68e9b | 7977 | sv_setpvs(PL_subname,"?"); |
09bef843 | 7978 | have_name = FALSE; |
463ee0b2 | 7979 | } |
4633a7c4 | 7980 | |
09bef843 SB |
7981 | if (key == KEY_format) { |
7982 | if (*s == '=') | |
7983 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5db06880 | 7984 | #ifdef PERL_MAD |
cd81e915 | 7985 | PL_thistoken = subtoken; |
5db06880 NC |
7986 | s = d; |
7987 | #else | |
09bef843 | 7988 | if (have_name) |
b1b65b59 JH |
7989 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
7990 | FALSE, TRUE, TRUE); | |
5db06880 | 7991 | #endif |
09bef843 SB |
7992 | OPERATOR(FORMAT); |
7993 | } | |
79072805 | 7994 | |
09bef843 SB |
7995 | /* Look for a prototype */ |
7996 | if (*s == '(') { | |
d9f2850e RGS |
7997 | char *p; |
7998 | bool bad_proto = FALSE; | |
9e8d7757 RB |
7999 | bool in_brackets = FALSE; |
8000 | char greedy_proto = ' '; | |
8001 | bool proto_after_greedy_proto = FALSE; | |
8002 | bool must_be_last = FALSE; | |
8003 | bool underscore = FALSE; | |
aef2a98a | 8004 | bool seen_underscore = FALSE; |
197afce1 | 8005 | const bool warnillegalproto = ckWARN(WARN_ILLEGALPROTO); |
09bef843 | 8006 | |
5db06880 | 8007 | s = scan_str(s,!!PL_madskills,FALSE); |
37fd879b | 8008 | if (!s) |
09bef843 | 8009 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 8010 | /* strip spaces and check for bad characters */ |
09bef843 SB |
8011 | d = SvPVX(PL_lex_stuff); |
8012 | tmp = 0; | |
d9f2850e RGS |
8013 | for (p = d; *p; ++p) { |
8014 | if (!isSPACE(*p)) { | |
8015 | d[tmp++] = *p; | |
9e8d7757 | 8016 | |
197afce1 | 8017 | if (warnillegalproto) { |
9e8d7757 RB |
8018 | if (must_be_last) |
8019 | proto_after_greedy_proto = TRUE; | |
c035a075 | 8020 | if (!strchr("$@%*;[]&\\_+", *p)) { |
9e8d7757 RB |
8021 | bad_proto = TRUE; |
8022 | } | |
8023 | else { | |
8024 | if ( underscore ) { | |
8025 | if ( *p != ';' ) | |
8026 | bad_proto = TRUE; | |
8027 | underscore = FALSE; | |
8028 | } | |
8029 | if ( *p == '[' ) { | |
8030 | in_brackets = TRUE; | |
8031 | } | |
8032 | else if ( *p == ']' ) { | |
8033 | in_brackets = FALSE; | |
8034 | } | |
8035 | else if ( (*p == '@' || *p == '%') && | |
8036 | ( tmp < 2 || d[tmp-2] != '\\' ) && | |
8037 | !in_brackets ) { | |
8038 | must_be_last = TRUE; | |
8039 | greedy_proto = *p; | |
8040 | } | |
8041 | else if ( *p == '_' ) { | |
aef2a98a | 8042 | underscore = seen_underscore = TRUE; |
9e8d7757 RB |
8043 | } |
8044 | } | |
8045 | } | |
d37a9538 | 8046 | } |
09bef843 | 8047 | } |
d9f2850e | 8048 | d[tmp] = '\0'; |
9e8d7757 | 8049 | if (proto_after_greedy_proto) |
197afce1 | 8050 | Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO), |
9e8d7757 RB |
8051 | "Prototype after '%c' for %"SVf" : %s", |
8052 | greedy_proto, SVfARG(PL_subname), d); | |
d9f2850e | 8053 | if (bad_proto) |
197afce1 | 8054 | Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO), |
aef2a98a RGS |
8055 | "Illegal character %sin prototype for %"SVf" : %s", |
8056 | seen_underscore ? "after '_' " : "", | |
be2597df | 8057 | SVfARG(PL_subname), d); |
b162af07 | 8058 | SvCUR_set(PL_lex_stuff, tmp); |
09bef843 | 8059 | have_proto = TRUE; |
68dc0745 | 8060 | |
5db06880 NC |
8061 | #ifdef PERL_MAD |
8062 | start_force(0); | |
cd81e915 | 8063 | CURMAD('q', PL_thisopen); |
5db06880 | 8064 | CURMAD('_', tmpwhite); |
cd81e915 NC |
8065 | CURMAD('=', PL_thisstuff); |
8066 | CURMAD('Q', PL_thisclose); | |
5db06880 NC |
8067 | NEXTVAL_NEXTTOKE.opval = |
8068 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
1a9a51d4 | 8069 | PL_lex_stuff = NULL; |
5db06880 NC |
8070 | force_next(THING); |
8071 | ||
8072 | s = SKIPSPACE2(s,tmpwhite); | |
8073 | #else | |
09bef843 | 8074 | s = skipspace(s); |
5db06880 | 8075 | #endif |
4633a7c4 | 8076 | } |
09bef843 SB |
8077 | else |
8078 | have_proto = FALSE; | |
8079 | ||
8080 | if (*s == ':' && s[1] != ':') | |
8081 | PL_expect = attrful; | |
8e742a20 MHM |
8082 | else if (*s != '{' && key == KEY_sub) { |
8083 | if (!have_name) | |
8084 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
fd909433 | 8085 | else if (*s != ';' && *s != '}') |
be2597df | 8086 | Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, SVfARG(PL_subname)); |
8e742a20 | 8087 | } |
09bef843 | 8088 | |
5db06880 NC |
8089 | #ifdef PERL_MAD |
8090 | start_force(0); | |
8091 | if (tmpwhite) { | |
8092 | if (PL_madskills) | |
6b29d1f5 | 8093 | curmad('^', newSVpvs("")); |
5db06880 NC |
8094 | CURMAD('_', tmpwhite); |
8095 | } | |
8096 | force_next(0); | |
8097 | ||
cd81e915 | 8098 | PL_thistoken = subtoken; |
5db06880 | 8099 | #else |
09bef843 | 8100 | if (have_proto) { |
9ded7720 | 8101 | NEXTVAL_NEXTTOKE.opval = |
b1b65b59 | 8102 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); |
a0714e2c | 8103 | PL_lex_stuff = NULL; |
09bef843 | 8104 | force_next(THING); |
68dc0745 | 8105 | } |
5db06880 | 8106 | #endif |
09bef843 | 8107 | if (!have_name) { |
49a54bbe NC |
8108 | if (PL_curstash) |
8109 | sv_setpvs(PL_subname, "__ANON__"); | |
8110 | else | |
8111 | sv_setpvs(PL_subname, "__ANON__::__ANON__"); | |
09bef843 | 8112 | TOKEN(ANONSUB); |
4633a7c4 | 8113 | } |
5db06880 | 8114 | #ifndef PERL_MAD |
b1b65b59 JH |
8115 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
8116 | FALSE, TRUE, TRUE); | |
5db06880 | 8117 | #endif |
09bef843 SB |
8118 | if (key == KEY_my) |
8119 | TOKEN(MYSUB); | |
8120 | TOKEN(SUB); | |
4633a7c4 | 8121 | } |
79072805 LW |
8122 | |
8123 | case KEY_system: | |
a0d0e21e | 8124 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
8125 | |
8126 | case KEY_symlink: | |
a0d0e21e | 8127 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
8128 | |
8129 | case KEY_syscall: | |
a0d0e21e | 8130 | LOP(OP_SYSCALL,XTERM); |
79072805 | 8131 | |
c07a80fd | 8132 | case KEY_sysopen: |
8133 | LOP(OP_SYSOPEN,XTERM); | |
8134 | ||
137443ea | 8135 | case KEY_sysseek: |
8136 | LOP(OP_SYSSEEK,XTERM); | |
8137 | ||
79072805 | 8138 | case KEY_sysread: |
a0d0e21e | 8139 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
8140 | |
8141 | case KEY_syswrite: | |
a0d0e21e | 8142 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
8143 | |
8144 | case KEY_tr: | |
8145 | s = scan_trans(s); | |
8146 | TERM(sublex_start()); | |
8147 | ||
8148 | case KEY_tell: | |
8149 | UNI(OP_TELL); | |
8150 | ||
8151 | case KEY_telldir: | |
8152 | UNI(OP_TELLDIR); | |
8153 | ||
463ee0b2 | 8154 | case KEY_tie: |
a0d0e21e | 8155 | LOP(OP_TIE,XTERM); |
463ee0b2 | 8156 | |
c07a80fd | 8157 | case KEY_tied: |
8158 | UNI(OP_TIED); | |
8159 | ||
79072805 LW |
8160 | case KEY_time: |
8161 | FUN0(OP_TIME); | |
8162 | ||
8163 | case KEY_times: | |
8164 | FUN0(OP_TMS); | |
8165 | ||
8166 | case KEY_truncate: | |
a0d0e21e | 8167 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
8168 | |
8169 | case KEY_uc: | |
8170 | UNI(OP_UC); | |
8171 | ||
8172 | case KEY_ucfirst: | |
8173 | UNI(OP_UCFIRST); | |
8174 | ||
463ee0b2 LW |
8175 | case KEY_untie: |
8176 | UNI(OP_UNTIE); | |
8177 | ||
79072805 | 8178 | case KEY_until: |
78cdf107 Z |
8179 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8180 | return REPORT(0); | |
6154021b | 8181 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8182 | OPERATOR(UNTIL); |
8183 | ||
8184 | case KEY_unless: | |
78cdf107 Z |
8185 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8186 | return REPORT(0); | |
6154021b | 8187 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8188 | OPERATOR(UNLESS); |
8189 | ||
8190 | case KEY_unlink: | |
a0d0e21e | 8191 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
8192 | |
8193 | case KEY_undef: | |
6f33ba73 | 8194 | UNIDOR(OP_UNDEF); |
79072805 LW |
8195 | |
8196 | case KEY_unpack: | |
a0d0e21e | 8197 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
8198 | |
8199 | case KEY_utime: | |
a0d0e21e | 8200 | LOP(OP_UTIME,XTERM); |
79072805 LW |
8201 | |
8202 | case KEY_umask: | |
6f33ba73 | 8203 | UNIDOR(OP_UMASK); |
79072805 LW |
8204 | |
8205 | case KEY_unshift: | |
a0d0e21e LW |
8206 | LOP(OP_UNSHIFT,XTERM); |
8207 | ||
8208 | case KEY_use: | |
468aa647 | 8209 | s = tokenize_use(1, s); |
a0d0e21e | 8210 | OPERATOR(USE); |
79072805 LW |
8211 | |
8212 | case KEY_values: | |
8213 | UNI(OP_VALUES); | |
8214 | ||
8215 | case KEY_vec: | |
a0d0e21e | 8216 | LOP(OP_VEC,XTERM); |
79072805 | 8217 | |
0d863452 | 8218 | case KEY_when: |
78cdf107 Z |
8219 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8220 | return REPORT(0); | |
6154021b | 8221 | pl_yylval.ival = CopLINE(PL_curcop); |
0d863452 RH |
8222 | OPERATOR(WHEN); |
8223 | ||
79072805 | 8224 | case KEY_while: |
78cdf107 Z |
8225 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8226 | return REPORT(0); | |
6154021b | 8227 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8228 | OPERATOR(WHILE); |
8229 | ||
8230 | case KEY_warn: | |
3280af22 | 8231 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 8232 | LOP(OP_WARN,XTERM); |
79072805 LW |
8233 | |
8234 | case KEY_wait: | |
8235 | FUN0(OP_WAIT); | |
8236 | ||
8237 | case KEY_waitpid: | |
a0d0e21e | 8238 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
8239 | |
8240 | case KEY_wantarray: | |
8241 | FUN0(OP_WANTARRAY); | |
8242 | ||
8243 | case KEY_write: | |
9d116dd7 JH |
8244 | #ifdef EBCDIC |
8245 | { | |
df3728a2 JH |
8246 | char ctl_l[2]; |
8247 | ctl_l[0] = toCTRL('L'); | |
8248 | ctl_l[1] = '\0'; | |
fafc274c | 8249 | gv_fetchpvn_flags(ctl_l, 1, GV_ADD|GV_NOTQUAL, SVt_PV); |
9d116dd7 JH |
8250 | } |
8251 | #else | |
fafc274c NC |
8252 | /* Make sure $^L is defined */ |
8253 | gv_fetchpvs("\f", GV_ADD|GV_NOTQUAL, SVt_PV); | |
9d116dd7 | 8254 | #endif |
79072805 LW |
8255 | UNI(OP_ENTERWRITE); |
8256 | ||
8257 | case KEY_x: | |
78cdf107 Z |
8258 | if (PL_expect == XOPERATOR) { |
8259 | if (*s == '=' && !PL_lex_allbrackets && | |
8260 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) | |
8261 | return REPORT(0); | |
79072805 | 8262 | Mop(OP_REPEAT); |
78cdf107 | 8263 | } |
79072805 LW |
8264 | check_uni(); |
8265 | goto just_a_word; | |
8266 | ||
a0d0e21e | 8267 | case KEY_xor: |
78cdf107 Z |
8268 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
8269 | return REPORT(0); | |
6154021b | 8270 | pl_yylval.ival = OP_XOR; |
a0d0e21e LW |
8271 | OPERATOR(OROP); |
8272 | ||
79072805 LW |
8273 | case KEY_y: |
8274 | s = scan_trans(s); | |
8275 | TERM(sublex_start()); | |
8276 | } | |
49dc05e3 | 8277 | }} |
79072805 | 8278 | } |
bf4acbe4 GS |
8279 | #ifdef __SC__ |
8280 | #pragma segment Main | |
8281 | #endif | |
79072805 | 8282 | |
e930465f JH |
8283 | static int |
8284 | S_pending_ident(pTHX) | |
8eceec63 | 8285 | { |
97aff369 | 8286 | dVAR; |
8eceec63 | 8287 | register char *d; |
bbd11bfc | 8288 | PADOFFSET tmp = 0; |
8eceec63 SC |
8289 | /* pit holds the identifier we read and pending_ident is reset */ |
8290 | char pit = PL_pending_ident; | |
9bde8eb0 NC |
8291 | const STRLEN tokenbuf_len = strlen(PL_tokenbuf); |
8292 | /* All routes through this function want to know if there is a colon. */ | |
c099d646 | 8293 | const char *const has_colon = (const char*) memchr (PL_tokenbuf, ':', tokenbuf_len); |
8eceec63 SC |
8294 | PL_pending_ident = 0; |
8295 | ||
cd81e915 | 8296 | /* PL_realtokenstart = realtokenend = PL_bufptr - SvPVX(PL_linestr); */ |
8eceec63 | 8297 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
b6007c36 | 8298 | "### Pending identifier '%s'\n", PL_tokenbuf); }); |
8eceec63 SC |
8299 | |
8300 | /* if we're in a my(), we can't allow dynamics here. | |
8301 | $foo'bar has already been turned into $foo::bar, so | |
8302 | just check for colons. | |
8303 | ||
8304 | if it's a legal name, the OP is a PADANY. | |
8305 | */ | |
8306 | if (PL_in_my) { | |
8307 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
9bde8eb0 | 8308 | if (has_colon) |
8eceec63 SC |
8309 | yyerror(Perl_form(aTHX_ "No package name allowed for " |
8310 | "variable %s in \"our\"", | |
8311 | PL_tokenbuf)); | |
bc9b26ca | 8312 | tmp = allocmy(PL_tokenbuf, tokenbuf_len, UTF ? SVf_UTF8 : 0); |
8eceec63 SC |
8313 | } |
8314 | else { | |
9bde8eb0 | 8315 | if (has_colon) |
952306ac RGS |
8316 | yyerror(Perl_form(aTHX_ PL_no_myglob, |
8317 | PL_in_my == KEY_my ? "my" : "state", PL_tokenbuf)); | |
8eceec63 | 8318 | |
6154021b | 8319 | pl_yylval.opval = newOP(OP_PADANY, 0); |
bc9b26ca BF |
8320 | pl_yylval.opval->op_targ = allocmy(PL_tokenbuf, tokenbuf_len, |
8321 | UTF ? SVf_UTF8 : 0); | |
8eceec63 SC |
8322 | return PRIVATEREF; |
8323 | } | |
8324 | } | |
8325 | ||
8326 | /* | |
8327 | build the ops for accesses to a my() variable. | |
8328 | ||
8329 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
8330 | then used in a comparison. This catches most, but not | |
8331 | all cases. For instance, it catches | |
8332 | sort { my($a); $a <=> $b } | |
8333 | but not | |
8334 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
8335 | (although why you'd do that is anyone's guess). | |
8336 | */ | |
8337 | ||
9bde8eb0 | 8338 | if (!has_colon) { |
8716503d | 8339 | if (!PL_in_my) |
bc9b26ca BF |
8340 | tmp = pad_findmy_pvn(PL_tokenbuf, tokenbuf_len, |
8341 | UTF ? SVf_UTF8 : 0); | |
8716503d | 8342 | if (tmp != NOT_IN_PAD) { |
8eceec63 | 8343 | /* might be an "our" variable" */ |
00b1698f | 8344 | if (PAD_COMPNAME_FLAGS_isOUR(tmp)) { |
8eceec63 | 8345 | /* build ops for a bareword */ |
b64e5050 AL |
8346 | HV * const stash = PAD_COMPNAME_OURSTASH(tmp); |
8347 | HEK * const stashname = HvNAME_HEK(stash); | |
8348 | SV * const sym = newSVhek(stashname); | |
396482e1 | 8349 | sv_catpvs(sym, "::"); |
9bde8eb0 | 8350 | sv_catpvn(sym, PL_tokenbuf+1, tokenbuf_len - 1); |
6154021b RGS |
8351 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); |
8352 | pl_yylval.opval->op_private = OPpCONST_ENTERED; | |
7a5fd60d | 8353 | gv_fetchsv(sym, |
8eceec63 SC |
8354 | (PL_in_eval |
8355 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 8356 | : GV_ADDMULTI |
8eceec63 SC |
8357 | ), |
8358 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
8359 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
8360 | : SVt_PVHV)); | |
8361 | return WORD; | |
8362 | } | |
8363 | ||
8364 | /* if it's a sort block and they're naming $a or $b */ | |
8365 | if (PL_last_lop_op == OP_SORT && | |
8366 | PL_tokenbuf[0] == '$' && | |
8367 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
8368 | && !PL_tokenbuf[2]) | |
8369 | { | |
8370 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
8371 | d < PL_bufend && *d != '\n'; | |
8372 | d++) | |
8373 | { | |
8374 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
8375 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
8376 | PL_tokenbuf); | |
8377 | } | |
8378 | } | |
8379 | } | |
8380 | ||
6154021b RGS |
8381 | pl_yylval.opval = newOP(OP_PADANY, 0); |
8382 | pl_yylval.opval->op_targ = tmp; | |
8eceec63 SC |
8383 | return PRIVATEREF; |
8384 | } | |
8385 | } | |
8386 | ||
8387 | /* | |
8388 | Whine if they've said @foo in a doublequoted string, | |
8389 | and @foo isn't a variable we can find in the symbol | |
8390 | table. | |
8391 | */ | |
d824713b NC |
8392 | if (ckWARN(WARN_AMBIGUOUS) && |
8393 | pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
9bde8eb0 NC |
8394 | GV *const gv = gv_fetchpvn_flags(PL_tokenbuf + 1, tokenbuf_len - 1, 0, |
8395 | SVt_PVAV); | |
8eceec63 | 8396 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
e879d94f RGS |
8397 | /* DO NOT warn for @- and @+ */ |
8398 | && !( PL_tokenbuf[2] == '\0' && | |
8399 | ( PL_tokenbuf[1] == '-' || PL_tokenbuf[1] == '+' )) | |
8400 | ) | |
8eceec63 SC |
8401 | { |
8402 | /* Downgraded from fatal to warning 20000522 mjd */ | |
d824713b NC |
8403 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8404 | "Possible unintended interpolation of %s in string", | |
8405 | PL_tokenbuf); | |
8eceec63 SC |
8406 | } |
8407 | } | |
8408 | ||
8409 | /* build ops for a bareword */ | |
6154021b | 8410 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn(PL_tokenbuf + 1, |
9bde8eb0 | 8411 | tokenbuf_len - 1)); |
6154021b | 8412 | pl_yylval.opval->op_private = OPpCONST_ENTERED; |
223f0fb7 NC |
8413 | gv_fetchpvn_flags(PL_tokenbuf+1, tokenbuf_len - 1, |
8414 | PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : GV_ADD, | |
8415 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
8416 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
8417 | : SVt_PVHV)); | |
8eceec63 SC |
8418 | return WORD; |
8419 | } | |
8420 | ||
76e3520e | 8421 | STATIC void |
c94115d8 | 8422 | S_checkcomma(pTHX_ const char *s, const char *name, const char *what) |
a687059c | 8423 | { |
97aff369 | 8424 | dVAR; |
2f3197b3 | 8425 | |
7918f24d NC |
8426 | PERL_ARGS_ASSERT_CHECKCOMMA; |
8427 | ||
d008e5eb | 8428 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
8429 | if (ckWARN(WARN_SYNTAX)) { |
8430 | int level = 1; | |
26ff0806 | 8431 | const char *w; |
d008e5eb GS |
8432 | for (w = s+2; *w && level; w++) { |
8433 | if (*w == '(') | |
8434 | ++level; | |
8435 | else if (*w == ')') | |
8436 | --level; | |
8437 | } | |
888fea98 NC |
8438 | while (isSPACE(*w)) |
8439 | ++w; | |
b1439985 RGS |
8440 | /* the list of chars below is for end of statements or |
8441 | * block / parens, boolean operators (&&, ||, //) and branch | |
8442 | * constructs (or, and, if, until, unless, while, err, for). | |
8443 | * Not a very solid hack... */ | |
8444 | if (!*w || !strchr(";&/|})]oaiuwef!=", *w)) | |
9014280d | 8445 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 8446 | "%s (...) interpreted as function",name); |
d008e5eb | 8447 | } |
2f3197b3 | 8448 | } |
3280af22 | 8449 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 8450 | s++; |
a687059c LW |
8451 | if (*s == '(') |
8452 | s++; | |
3280af22 | 8453 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 8454 | s++; |
7e2040f0 | 8455 | if (isIDFIRST_lazy_if(s,UTF)) { |
26ff0806 | 8456 | const char * const w = s++; |
7e2040f0 | 8457 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 8458 | s++; |
3280af22 | 8459 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 8460 | s++; |
e929a76b | 8461 | if (*s == ',') { |
c94115d8 | 8462 | GV* gv; |
5458a98a | 8463 | if (keyword(w, s - w, 0)) |
e929a76b | 8464 | return; |
c94115d8 NC |
8465 | |
8466 | gv = gv_fetchpvn_flags(w, s - w, 0, SVt_PVCV); | |
8467 | if (gv && GvCVu(gv)) | |
abbb3198 | 8468 | return; |
cea2e8a9 | 8469 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
8470 | } |
8471 | } | |
8472 | } | |
8473 | ||
423cee85 JH |
8474 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
8475 | Best used as sv=new_constant(..., sv, ...). | |
8476 | If s, pv are NULL, calls subroutine with one argument, | |
8477 | and type is used with error messages only. */ | |
8478 | ||
b3ac6de7 | 8479 | STATIC SV * |
eb0d8d16 NC |
8480 | S_new_constant(pTHX_ const char *s, STRLEN len, const char *key, STRLEN keylen, |
8481 | SV *sv, SV *pv, const char *type, STRLEN typelen) | |
b3ac6de7 | 8482 | { |
27da23d5 | 8483 | dVAR; dSP; |
890ce7af | 8484 | HV * const table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 8485 | SV *res; |
b3ac6de7 IZ |
8486 | SV **cvp; |
8487 | SV *cv, *typesv; | |
89e33a05 | 8488 | const char *why1 = "", *why2 = "", *why3 = ""; |
4e553d73 | 8489 | |
7918f24d NC |
8490 | PERL_ARGS_ASSERT_NEW_CONSTANT; |
8491 | ||
f0af216f | 8492 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
8493 | SV *msg; |
8494 | ||
10edeb5d JH |
8495 | why2 = (const char *) |
8496 | (strEQ(key,"charnames") | |
8497 | ? "(possibly a missing \"use charnames ...\")" | |
8498 | : ""); | |
4e553d73 | 8499 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
8500 | (type ? type: "undef"), why2); |
8501 | ||
8502 | /* This is convoluted and evil ("goto considered harmful") | |
8503 | * but I do not understand the intricacies of all the different | |
8504 | * failure modes of %^H in here. The goal here is to make | |
8505 | * the most probable error message user-friendly. --jhi */ | |
8506 | ||
8507 | goto msgdone; | |
8508 | ||
423cee85 | 8509 | report: |
4e553d73 | 8510 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 8511 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 8512 | msgdone: |
95a20fc0 | 8513 | yyerror(SvPVX_const(msg)); |
423cee85 JH |
8514 | SvREFCNT_dec(msg); |
8515 | return sv; | |
8516 | } | |
ff3f963a KW |
8517 | |
8518 | /* charnames doesn't work well if there have been errors found */ | |
f5a57329 RGS |
8519 | if (PL_error_count > 0 && strEQ(key,"charnames")) |
8520 | return &PL_sv_undef; | |
ff3f963a | 8521 | |
eb0d8d16 | 8522 | cvp = hv_fetch(table, key, keylen, FALSE); |
b3ac6de7 | 8523 | if (!cvp || !SvOK(*cvp)) { |
423cee85 JH |
8524 | why1 = "$^H{"; |
8525 | why2 = key; | |
f0af216f | 8526 | why3 = "} is not defined"; |
423cee85 | 8527 | goto report; |
b3ac6de7 IZ |
8528 | } |
8529 | sv_2mortal(sv); /* Parent created it permanently */ | |
8530 | cv = *cvp; | |
423cee85 | 8531 | if (!pv && s) |
59cd0e26 | 8532 | pv = newSVpvn_flags(s, len, SVs_TEMP); |
423cee85 | 8533 | if (type && pv) |
59cd0e26 | 8534 | typesv = newSVpvn_flags(type, typelen, SVs_TEMP); |
b3ac6de7 | 8535 | else |
423cee85 | 8536 | typesv = &PL_sv_undef; |
4e553d73 | 8537 | |
e788e7d3 | 8538 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
8539 | ENTER ; |
8540 | SAVETMPS; | |
4e553d73 | 8541 | |
423cee85 | 8542 | PUSHMARK(SP) ; |
a5845cb7 | 8543 | EXTEND(sp, 3); |
423cee85 JH |
8544 | if (pv) |
8545 | PUSHs(pv); | |
b3ac6de7 | 8546 | PUSHs(sv); |
423cee85 JH |
8547 | if (pv) |
8548 | PUSHs(typesv); | |
b3ac6de7 | 8549 | PUTBACK; |
423cee85 | 8550 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 8551 | |
423cee85 | 8552 | SPAGAIN ; |
4e553d73 | 8553 | |
423cee85 | 8554 | /* Check the eval first */ |
9b0e499b | 8555 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
396482e1 | 8556 | sv_catpvs(ERRSV, "Propagated"); |
8b6b16e7 | 8557 | yyerror(SvPV_nolen_const(ERRSV)); /* Duplicates the message inside eval */ |
e1f15930 | 8558 | (void)POPs; |
b37c2d43 | 8559 | res = SvREFCNT_inc_simple(sv); |
423cee85 JH |
8560 | } |
8561 | else { | |
8562 | res = POPs; | |
b37c2d43 | 8563 | SvREFCNT_inc_simple_void(res); |
423cee85 | 8564 | } |
4e553d73 | 8565 | |
423cee85 JH |
8566 | PUTBACK ; |
8567 | FREETMPS ; | |
8568 | LEAVE ; | |
b3ac6de7 | 8569 | POPSTACK; |
4e553d73 | 8570 | |
b3ac6de7 | 8571 | if (!SvOK(res)) { |
423cee85 JH |
8572 | why1 = "Call to &{$^H{"; |
8573 | why2 = key; | |
f0af216f | 8574 | why3 = "}} did not return a defined value"; |
423cee85 JH |
8575 | sv = res; |
8576 | goto report; | |
9b0e499b | 8577 | } |
423cee85 | 8578 | |
9b0e499b | 8579 | return res; |
b3ac6de7 | 8580 | } |
4e553d73 | 8581 | |
d0a148a6 NC |
8582 | /* Returns a NUL terminated string, with the length of the string written to |
8583 | *slp | |
8584 | */ | |
76e3520e | 8585 | STATIC char * |
cea2e8a9 | 8586 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 | 8587 | { |
97aff369 | 8588 | dVAR; |
463ee0b2 | 8589 | register char *d = dest; |
890ce7af | 8590 | register char * const e = d + destlen - 3; /* two-character token, ending NUL */ |
7918f24d NC |
8591 | |
8592 | PERL_ARGS_ASSERT_SCAN_WORD; | |
8593 | ||
463ee0b2 | 8594 | for (;;) { |
8903cb82 | 8595 | if (d >= e) |
cea2e8a9 | 8596 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 8597 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 8598 | *d++ = *s++; |
c35e046a | 8599 | else if (allow_package && (*s == '\'') && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
8600 | *d++ = ':'; |
8601 | *d++ = ':'; | |
8602 | s++; | |
8603 | } | |
c35e046a | 8604 | else if (allow_package && (s[0] == ':') && (s[1] == ':') && (s[2] != '$')) { |
463ee0b2 LW |
8605 | *d++ = *s++; |
8606 | *d++ = *s++; | |
8607 | } | |
fd400ab9 | 8608 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 8609 | char *t = s + UTF8SKIP(s); |
c35e046a | 8610 | size_t len; |
fd400ab9 | 8611 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 | 8612 | t += UTF8SKIP(t); |
c35e046a AL |
8613 | len = t - s; |
8614 | if (d + len > e) | |
cea2e8a9 | 8615 | Perl_croak(aTHX_ ident_too_long); |
c35e046a AL |
8616 | Copy(s, d, len, char); |
8617 | d += len; | |
a0ed51b3 LW |
8618 | s = t; |
8619 | } | |
463ee0b2 LW |
8620 | else { |
8621 | *d = '\0'; | |
8622 | *slp = d - dest; | |
8623 | return s; | |
e929a76b | 8624 | } |
378cc40b LW |
8625 | } |
8626 | } | |
8627 | ||
76e3520e | 8628 | STATIC char * |
f54cb97a | 8629 | S_scan_ident(pTHX_ register char *s, register const char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b | 8630 | { |
97aff369 | 8631 | dVAR; |
6136c704 | 8632 | char *bracket = NULL; |
748a9306 | 8633 | char funny = *s++; |
6136c704 | 8634 | register char *d = dest; |
0b3da58d | 8635 | register char * const e = d + destlen - 3; /* two-character token, ending NUL */ |
378cc40b | 8636 | |
7918f24d NC |
8637 | PERL_ARGS_ASSERT_SCAN_IDENT; |
8638 | ||
a0d0e21e | 8639 | if (isSPACE(*s)) |
29595ff2 | 8640 | s = PEEKSPACE(s); |
de3bb511 | 8641 | if (isDIGIT(*s)) { |
8903cb82 | 8642 | while (isDIGIT(*s)) { |
8643 | if (d >= e) | |
cea2e8a9 | 8644 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 8645 | *d++ = *s++; |
8903cb82 | 8646 | } |
378cc40b LW |
8647 | } |
8648 | else { | |
463ee0b2 | 8649 | for (;;) { |
8903cb82 | 8650 | if (d >= e) |
cea2e8a9 | 8651 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 8652 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 8653 | *d++ = *s++; |
7e2040f0 | 8654 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
8655 | *d++ = ':'; |
8656 | *d++ = ':'; | |
8657 | s++; | |
8658 | } | |
a0d0e21e | 8659 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
8660 | *d++ = *s++; |
8661 | *d++ = *s++; | |
8662 | } | |
fd400ab9 | 8663 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 8664 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 8665 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
8666 | t += UTF8SKIP(t); |
8667 | if (d + (t - s) > e) | |
cea2e8a9 | 8668 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
8669 | Copy(s, d, t - s, char); |
8670 | d += t - s; | |
8671 | s = t; | |
8672 | } | |
463ee0b2 LW |
8673 | else |
8674 | break; | |
8675 | } | |
378cc40b LW |
8676 | } |
8677 | *d = '\0'; | |
8678 | d = dest; | |
79072805 | 8679 | if (*d) { |
3280af22 NIS |
8680 | if (PL_lex_state != LEX_NORMAL) |
8681 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 8682 | return s; |
378cc40b | 8683 | } |
748a9306 | 8684 | if (*s == '$' && s[1] && |
3792a11b | 8685 | (isALNUM_lazy_if(s+1,UTF) || s[1] == '$' || s[1] == '{' || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 8686 | { |
4810e5ec | 8687 | return s; |
5cd24f17 | 8688 | } |
79072805 LW |
8689 | if (*s == '{') { |
8690 | bracket = s; | |
8691 | s++; | |
8692 | } | |
8693 | else if (ck_uni) | |
8694 | check_uni(); | |
93a17b20 | 8695 | if (s < send) |
79072805 LW |
8696 | *d = *s++; |
8697 | d[1] = '\0'; | |
2b92dfce | 8698 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 8699 | *d = toCTRL(*s); |
8700 | s++; | |
de3bb511 | 8701 | } |
79072805 | 8702 | if (bracket) { |
748a9306 | 8703 | if (isSPACE(s[-1])) { |
fa83b5b6 | 8704 | while (s < send) { |
f54cb97a | 8705 | const char ch = *s++; |
bf4acbe4 | 8706 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 8707 | *d = ch; |
8708 | break; | |
8709 | } | |
8710 | } | |
748a9306 | 8711 | } |
7e2040f0 | 8712 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 8713 | d++; |
a0ed51b3 | 8714 | if (UTF) { |
6136c704 AL |
8715 | char *end = s; |
8716 | while ((end < send && isALNUM_lazy_if(end,UTF)) || *end == ':') { | |
8717 | end += UTF8SKIP(end); | |
8718 | while (end < send && UTF8_IS_CONTINUED(*end) && is_utf8_mark((U8*)end)) | |
8719 | end += UTF8SKIP(end); | |
a0ed51b3 | 8720 | } |
6136c704 AL |
8721 | Copy(s, d, end - s, char); |
8722 | d += end - s; | |
8723 | s = end; | |
a0ed51b3 LW |
8724 | } |
8725 | else { | |
2b92dfce | 8726 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 8727 | *d++ = *s++; |
2b92dfce | 8728 | if (d >= e) |
cea2e8a9 | 8729 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 8730 | } |
79072805 | 8731 | *d = '\0'; |
c35e046a AL |
8732 | while (s < send && SPACE_OR_TAB(*s)) |
8733 | s++; | |
ff68c719 | 8734 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
5458a98a | 8735 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest, 0)) { |
10edeb5d JH |
8736 | const char * const brack = |
8737 | (const char *) | |
8738 | ((*s == '[') ? "[...]" : "{...}"); | |
e850844c | 8739 | /* diag_listed_as: Ambiguous use of %c{%s[...]} resolved to %c%s[...] */ |
9014280d | 8740 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 8741 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
8742 | funny, dest, brack, funny, dest, brack); |
8743 | } | |
79072805 | 8744 | bracket++; |
a0be28da | 8745 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
78cdf107 | 8746 | PL_lex_allbrackets++; |
79072805 LW |
8747 | return s; |
8748 | } | |
4e553d73 NIS |
8749 | } |
8750 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
8751 | * 1999-02-27 mjd-perl-patch@plover.com */ |
8752 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
8753 | && isALNUM(*s)) | |
8754 | { | |
8755 | d++; | |
8756 | while (isALNUM(*s) && d < e) { | |
8757 | *d++ = *s++; | |
8758 | } | |
8759 | if (d >= e) | |
cea2e8a9 | 8760 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 8761 | *d = '\0'; |
79072805 LW |
8762 | } |
8763 | if (*s == '}') { | |
8764 | s++; | |
7df0d042 | 8765 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 8766 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
8767 | PL_expect = XREF; |
8768 | } | |
d008e5eb | 8769 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 8770 | if (ckWARN(WARN_AMBIGUOUS) && |
780a5241 NC |
8771 | (keyword(dest, d - dest, 0) |
8772 | || get_cvn_flags(dest, d - dest, 0))) | |
d008e5eb | 8773 | { |
c35e046a AL |
8774 | if (funny == '#') |
8775 | funny = '@'; | |
9014280d | 8776 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
8777 | "Ambiguous use of %c{%s} resolved to %c%s", |
8778 | funny, dest, funny, dest); | |
8779 | } | |
8780 | } | |
79072805 LW |
8781 | } |
8782 | else { | |
8783 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 8784 | *dest = '\0'; |
79072805 LW |
8785 | } |
8786 | } | |
3280af22 NIS |
8787 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
8788 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
8789 | return s; |
8790 | } | |
8791 | ||
858a358b | 8792 | static bool |
3955e1a9 | 8793 | S_pmflag(pTHX_ const char* const valid_flags, U32 * pmfl, char** s, char* charset) { |
858a358b KW |
8794 | |
8795 | /* Adds, subtracts to/from 'pmfl' based on regex modifier flags found in | |
8796 | * the parse starting at 's', based on the subset that are valid in this | |
8797 | * context input to this routine in 'valid_flags'. Advances s. Returns | |
8798 | * TRUE if the input was a valid flag, so the next char may be as well; | |
3955e1a9 KW |
8799 | * otherwise FALSE. 'charset' should point to a NUL upon first call on the |
8800 | * current regex. This routine will set it to any charset modifier found. | |
8801 | * The caller shouldn't change it. This way, another charset modifier | |
8802 | * encountered in the parse can be detected as an error, as we have decided | |
8803 | * allow only one */ | |
858a358b KW |
8804 | |
8805 | const char c = **s; | |
94b03d7d | 8806 | |
858a358b KW |
8807 | if (! strchr(valid_flags, c)) { |
8808 | if (isALNUM(c)) { | |
94b03d7d | 8809 | goto deprecate; |
858a358b KW |
8810 | } |
8811 | return FALSE; | |
8812 | } | |
8813 | ||
8814 | switch (c) { | |
94b03d7d | 8815 | |
858a358b KW |
8816 | CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl); |
8817 | case GLOBAL_PAT_MOD: *pmfl |= PMf_GLOBAL; break; | |
8818 | case CONTINUE_PAT_MOD: *pmfl |= PMf_CONTINUE; break; | |
8819 | case ONCE_PAT_MOD: *pmfl |= PMf_KEEP; break; | |
8820 | case KEEPCOPY_PAT_MOD: *pmfl |= RXf_PMf_KEEPCOPY; break; | |
8821 | case NONDESTRUCT_PAT_MOD: *pmfl |= PMf_NONDESTRUCT; break; | |
94b03d7d KW |
8822 | case LOCALE_PAT_MOD: |
8823 | ||
8824 | /* In 5.14, qr//lt is legal but deprecated; the 't' means they | |
8825 | * can't be regex modifiers. | |
8826 | * In 5.14, s///le is legal and ambiguous. Try to disambiguate as | |
8827 | * much as easily done. s///lei, for example, has to mean regex | |
8828 | * modifiers if it's not an error (as does any word character | |
8829 | * following the 'e'). Otherwise, we resolve to the backwards- | |
8830 | * compatible, but less likely 's/// le ...', i.e. as meaning | |
8831 | * less-than-or-equal. The reason it's not likely is that s// | |
967ac236 KW |
8832 | * returns a number for code in the field (/r returns a string, but |
8833 | * that wasn't added until the 5.13 series), and so '<=' should be | |
8834 | * used for comparing, not 'le'. */ | |
94b03d7d KW |
8835 | if (*((*s) + 1) == 't') { |
8836 | goto deprecate; | |
8837 | } | |
563734a5 | 8838 | else if (*((*s) + 1) == 'e' && ! isALNUM(*((*s) + 2))) { |
aeac89a5 KW |
8839 | |
8840 | /* 'e' is valid only for substitutes, s///e. If it is not | |
8841 | * valid in the current context, then 'm//le' must mean the | |
8842 | * comparison operator, so use the regular deprecation message. | |
8843 | */ | |
8844 | if (! strchr(valid_flags, 'e')) { | |
8845 | goto deprecate; | |
8846 | } | |
94b03d7d KW |
8847 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), |
8848 | "Ambiguous use of 's//le...' resolved as 's// le...'; Rewrite as 's//el' if you meant 'use locale rules and evaluate rhs as an expression'. In Perl 5.16, it will be resolved the other way"); | |
8849 | return FALSE; | |
8850 | } | |
3955e1a9 KW |
8851 | if (*charset) { |
8852 | goto multiple_charsets; | |
8853 | } | |
94b03d7d | 8854 | set_regex_charset(pmfl, REGEX_LOCALE_CHARSET); |
3955e1a9 | 8855 | *charset = c; |
94b03d7d KW |
8856 | break; |
8857 | case UNICODE_PAT_MOD: | |
8858 | /* In 5.14, qr//unless and qr//until are legal but deprecated; the | |
8859 | * 'n' means they can't be regex modifiers */ | |
8860 | if (*((*s) + 1) == 'n') { | |
8861 | goto deprecate; | |
8862 | } | |
3955e1a9 KW |
8863 | if (*charset) { |
8864 | goto multiple_charsets; | |
8865 | } | |
94b03d7d | 8866 | set_regex_charset(pmfl, REGEX_UNICODE_CHARSET); |
3955e1a9 | 8867 | *charset = c; |
94b03d7d KW |
8868 | break; |
8869 | case ASCII_RESTRICT_PAT_MOD: | |
8870 | /* In 5.14, qr//and is legal but deprecated; the 'n' means they | |
8871 | * can't be regex modifiers */ | |
8872 | if (*((*s) + 1) == 'n') { | |
8873 | goto deprecate; | |
8874 | } | |
ff3f26d2 KW |
8875 | |
8876 | if (! *charset) { | |
94b03d7d KW |
8877 | set_regex_charset(pmfl, REGEX_ASCII_RESTRICTED_CHARSET); |
8878 | } | |
ff3f26d2 KW |
8879 | else { |
8880 | ||
8881 | /* Error if previous modifier wasn't an 'a', but if it was, see | |
8882 | * if, and accept, a second occurrence (only) */ | |
8883 | if (*charset != 'a' | |
8884 | || get_regex_charset(*pmfl) | |
8885 | != REGEX_ASCII_RESTRICTED_CHARSET) | |
8886 | { | |
8887 | goto multiple_charsets; | |
8888 | } | |
8889 | set_regex_charset(pmfl, REGEX_ASCII_MORE_RESTRICTED_CHARSET); | |
3955e1a9 KW |
8890 | } |
8891 | *charset = c; | |
94b03d7d KW |
8892 | break; |
8893 | case DEPENDS_PAT_MOD: | |
3955e1a9 KW |
8894 | if (*charset) { |
8895 | goto multiple_charsets; | |
8896 | } | |
94b03d7d | 8897 | set_regex_charset(pmfl, REGEX_DEPENDS_CHARSET); |
3955e1a9 | 8898 | *charset = c; |
94b03d7d | 8899 | break; |
879d0c72 | 8900 | } |
94b03d7d | 8901 | |
858a358b KW |
8902 | (*s)++; |
8903 | return TRUE; | |
94b03d7d KW |
8904 | |
8905 | deprecate: | |
8906 | Perl_ck_warner_d(aTHX_ packWARN(WARN_SYNTAX), | |
8907 | "Having no space between pattern and following word is deprecated"); | |
8908 | return FALSE; | |
3955e1a9 KW |
8909 | |
8910 | multiple_charsets: | |
8911 | if (*charset != c) { | |
8912 | yyerror(Perl_form(aTHX_ "Regexp modifiers \"/%c\" and \"/%c\" are mutually exclusive", *charset, c)); | |
8913 | } | |
ff3f26d2 KW |
8914 | else if (c == 'a') { |
8915 | yyerror("Regexp modifier \"/a\" may appear a maximum of twice"); | |
8916 | } | |
3955e1a9 KW |
8917 | else { |
8918 | yyerror(Perl_form(aTHX_ "Regexp modifier \"/%c\" may not appear twice", c)); | |
8919 | } | |
8920 | ||
8921 | /* Pretend that it worked, so will continue processing before dieing */ | |
8922 | (*s)++; | |
8923 | return TRUE; | |
879d0c72 NC |
8924 | } |
8925 | ||
76e3520e | 8926 | STATIC char * |
cea2e8a9 | 8927 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 8928 | { |
97aff369 | 8929 | dVAR; |
79072805 | 8930 | PMOP *pm; |
5db06880 | 8931 | char *s = scan_str(start,!!PL_madskills,FALSE); |
10edeb5d | 8932 | const char * const valid_flags = |
a20207d7 | 8933 | (const char *)((type == OP_QR) ? QR_PAT_MODS : M_PAT_MODS); |
3955e1a9 | 8934 | char charset = '\0'; /* character set modifier */ |
5db06880 NC |
8935 | #ifdef PERL_MAD |
8936 | char *modstart; | |
8937 | #endif | |
8938 | ||
7918f24d | 8939 | PERL_ARGS_ASSERT_SCAN_PAT; |
378cc40b | 8940 | |
25c09cbf | 8941 | if (!s) { |
6136c704 | 8942 | const char * const delimiter = skipspace(start); |
10edeb5d JH |
8943 | Perl_croak(aTHX_ |
8944 | (const char *) | |
8945 | (*delimiter == '?' | |
8946 | ? "Search pattern not terminated or ternary operator parsed as search pattern" | |
8947 | : "Search pattern not terminated" )); | |
25c09cbf | 8948 | } |
bbce6d69 | 8949 | |
8782bef2 | 8950 | pm = (PMOP*)newPMOP(type, 0); |
ad639bfb NC |
8951 | if (PL_multi_open == '?') { |
8952 | /* This is the only point in the code that sets PMf_ONCE: */ | |
79072805 | 8953 | pm->op_pmflags |= PMf_ONCE; |
ad639bfb NC |
8954 | |
8955 | /* Hence it's safe to do this bit of PMOP book-keeping here, which | |
8956 | allows us to restrict the list needed by reset to just the ?? | |
8957 | matches. */ | |
8958 | assert(type != OP_TRANS); | |
8959 | if (PL_curstash) { | |
daba3364 | 8960 | MAGIC *mg = mg_find((const SV *)PL_curstash, PERL_MAGIC_symtab); |
ad639bfb NC |
8961 | U32 elements; |
8962 | if (!mg) { | |
daba3364 | 8963 | mg = sv_magicext(MUTABLE_SV(PL_curstash), 0, PERL_MAGIC_symtab, 0, 0, |
ad639bfb NC |
8964 | 0); |
8965 | } | |
8966 | elements = mg->mg_len / sizeof(PMOP**); | |
8967 | Renewc(mg->mg_ptr, elements + 1, PMOP*, char); | |
8968 | ((PMOP**)mg->mg_ptr) [elements++] = pm; | |
8969 | mg->mg_len = elements * sizeof(PMOP**); | |
8970 | PmopSTASH_set(pm,PL_curstash); | |
8971 | } | |
8972 | } | |
5db06880 NC |
8973 | #ifdef PERL_MAD |
8974 | modstart = s; | |
8975 | #endif | |
3955e1a9 | 8976 | while (*s && S_pmflag(aTHX_ valid_flags, &(pm->op_pmflags), &s, &charset)) {}; |
5db06880 NC |
8977 | #ifdef PERL_MAD |
8978 | if (PL_madskills && modstart != s) { | |
8979 | SV* tmptoken = newSVpvn(modstart, s - modstart); | |
8980 | append_madprops(newMADPROP('m', MAD_SV, tmptoken, 0), (OP*)pm, 0); | |
8981 | } | |
8982 | #endif | |
4ac733c9 | 8983 | /* issue a warning if /c is specified,but /g is not */ |
a2a5de95 | 8984 | if ((pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) |
4ac733c9 | 8985 | { |
a2a5de95 NC |
8986 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), |
8987 | "Use of /c modifier is meaningless without /g" ); | |
4ac733c9 MJD |
8988 | } |
8989 | ||
3280af22 | 8990 | PL_lex_op = (OP*)pm; |
6154021b | 8991 | pl_yylval.ival = OP_MATCH; |
378cc40b LW |
8992 | return s; |
8993 | } | |
8994 | ||
76e3520e | 8995 | STATIC char * |
cea2e8a9 | 8996 | S_scan_subst(pTHX_ char *start) |
79072805 | 8997 | { |
27da23d5 | 8998 | dVAR; |
22594288 | 8999 | char *s; |
79072805 | 9000 | register PMOP *pm; |
4fdae800 | 9001 | I32 first_start; |
79072805 | 9002 | I32 es = 0; |
3955e1a9 | 9003 | char charset = '\0'; /* character set modifier */ |
5db06880 NC |
9004 | #ifdef PERL_MAD |
9005 | char *modstart; | |
9006 | #endif | |
79072805 | 9007 | |
7918f24d NC |
9008 | PERL_ARGS_ASSERT_SCAN_SUBST; |
9009 | ||
6154021b | 9010 | pl_yylval.ival = OP_NULL; |
79072805 | 9011 | |
5db06880 | 9012 | s = scan_str(start,!!PL_madskills,FALSE); |
79072805 | 9013 | |
37fd879b | 9014 | if (!s) |
cea2e8a9 | 9015 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 9016 | |
3280af22 | 9017 | if (s[-1] == PL_multi_open) |
79072805 | 9018 | s--; |
5db06880 NC |
9019 | #ifdef PERL_MAD |
9020 | if (PL_madskills) { | |
cd81e915 NC |
9021 | CURMAD('q', PL_thisopen); |
9022 | CURMAD('_', PL_thiswhite); | |
9023 | CURMAD('E', PL_thisstuff); | |
9024 | CURMAD('Q', PL_thisclose); | |
9025 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
5db06880 NC |
9026 | } |
9027 | #endif | |
79072805 | 9028 | |
3280af22 | 9029 | first_start = PL_multi_start; |
5db06880 | 9030 | s = scan_str(s,!!PL_madskills,FALSE); |
79072805 | 9031 | if (!s) { |
37fd879b | 9032 | if (PL_lex_stuff) { |
3280af22 | 9033 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 9034 | PL_lex_stuff = NULL; |
37fd879b | 9035 | } |
cea2e8a9 | 9036 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 9037 | } |
3280af22 | 9038 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 9039 | |
79072805 | 9040 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
5db06880 NC |
9041 | |
9042 | #ifdef PERL_MAD | |
9043 | if (PL_madskills) { | |
cd81e915 NC |
9044 | CURMAD('z', PL_thisopen); |
9045 | CURMAD('R', PL_thisstuff); | |
9046 | CURMAD('Z', PL_thisclose); | |
5db06880 NC |
9047 | } |
9048 | modstart = s; | |
9049 | #endif | |
9050 | ||
48c036b1 | 9051 | while (*s) { |
a20207d7 | 9052 | if (*s == EXEC_PAT_MOD) { |
a687059c | 9053 | s++; |
2f3197b3 | 9054 | es++; |
a687059c | 9055 | } |
3955e1a9 KW |
9056 | else if (! S_pmflag(aTHX_ S_PAT_MODS, &(pm->op_pmflags), &s, &charset)) |
9057 | { | |
48c036b1 | 9058 | break; |
aa78b661 | 9059 | } |
378cc40b | 9060 | } |
79072805 | 9061 | |
5db06880 NC |
9062 | #ifdef PERL_MAD |
9063 | if (PL_madskills) { | |
9064 | if (modstart != s) | |
9065 | curmad('m', newSVpvn(modstart, s - modstart)); | |
cd81e915 NC |
9066 | append_madprops(PL_thismad, (OP*)pm, 0); |
9067 | PL_thismad = 0; | |
5db06880 NC |
9068 | } |
9069 | #endif | |
a2a5de95 NC |
9070 | if ((pm->op_pmflags & PMf_CONTINUE)) { |
9071 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), "Use of /c modifier is meaningless in s///" ); | |
4ac733c9 MJD |
9072 | } |
9073 | ||
79072805 | 9074 | if (es) { |
6136c704 AL |
9075 | SV * const repl = newSVpvs(""); |
9076 | ||
0244c3a4 GS |
9077 | PL_sublex_info.super_bufptr = s; |
9078 | PL_sublex_info.super_bufend = PL_bufend; | |
9079 | PL_multi_end = 0; | |
79072805 | 9080 | pm->op_pmflags |= PMf_EVAL; |
a5849ce5 NC |
9081 | while (es-- > 0) { |
9082 | if (es) | |
9083 | sv_catpvs(repl, "eval "); | |
9084 | else | |
9085 | sv_catpvs(repl, "do "); | |
9086 | } | |
6f43d98f | 9087 | sv_catpvs(repl, "{"); |
3280af22 | 9088 | sv_catsv(repl, PL_lex_repl); |
9badc361 RGS |
9089 | if (strchr(SvPVX(PL_lex_repl), '#')) |
9090 | sv_catpvs(repl, "\n"); | |
9091 | sv_catpvs(repl, "}"); | |
25da4f38 | 9092 | SvEVALED_on(repl); |
3280af22 NIS |
9093 | SvREFCNT_dec(PL_lex_repl); |
9094 | PL_lex_repl = repl; | |
378cc40b | 9095 | } |
79072805 | 9096 | |
3280af22 | 9097 | PL_lex_op = (OP*)pm; |
6154021b | 9098 | pl_yylval.ival = OP_SUBST; |
378cc40b LW |
9099 | return s; |
9100 | } | |
9101 | ||
76e3520e | 9102 | STATIC char * |
cea2e8a9 | 9103 | S_scan_trans(pTHX_ char *start) |
378cc40b | 9104 | { |
97aff369 | 9105 | dVAR; |
a0d0e21e | 9106 | register char* s; |
11343788 | 9107 | OP *o; |
79072805 | 9108 | short *tbl; |
b84c11c8 NC |
9109 | U8 squash; |
9110 | U8 del; | |
9111 | U8 complement; | |
bb16bae8 | 9112 | bool nondestruct = 0; |
5db06880 NC |
9113 | #ifdef PERL_MAD |
9114 | char *modstart; | |
9115 | #endif | |
79072805 | 9116 | |
7918f24d NC |
9117 | PERL_ARGS_ASSERT_SCAN_TRANS; |
9118 | ||
6154021b | 9119 | pl_yylval.ival = OP_NULL; |
79072805 | 9120 | |
5db06880 | 9121 | s = scan_str(start,!!PL_madskills,FALSE); |
37fd879b | 9122 | if (!s) |
cea2e8a9 | 9123 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
5db06880 | 9124 | |
3280af22 | 9125 | if (s[-1] == PL_multi_open) |
2f3197b3 | 9126 | s--; |
5db06880 NC |
9127 | #ifdef PERL_MAD |
9128 | if (PL_madskills) { | |
cd81e915 NC |
9129 | CURMAD('q', PL_thisopen); |
9130 | CURMAD('_', PL_thiswhite); | |
9131 | CURMAD('E', PL_thisstuff); | |
9132 | CURMAD('Q', PL_thisclose); | |
9133 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
5db06880 NC |
9134 | } |
9135 | #endif | |
2f3197b3 | 9136 | |
5db06880 | 9137 | s = scan_str(s,!!PL_madskills,FALSE); |
79072805 | 9138 | if (!s) { |
37fd879b | 9139 | if (PL_lex_stuff) { |
3280af22 | 9140 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 9141 | PL_lex_stuff = NULL; |
37fd879b | 9142 | } |
cea2e8a9 | 9143 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 9144 | } |
5db06880 | 9145 | if (PL_madskills) { |
cd81e915 NC |
9146 | CURMAD('z', PL_thisopen); |
9147 | CURMAD('R', PL_thisstuff); | |
9148 | CURMAD('Z', PL_thisclose); | |
5db06880 | 9149 | } |
79072805 | 9150 | |
a0ed51b3 | 9151 | complement = del = squash = 0; |
5db06880 NC |
9152 | #ifdef PERL_MAD |
9153 | modstart = s; | |
9154 | #endif | |
7a1e2023 NC |
9155 | while (1) { |
9156 | switch (*s) { | |
9157 | case 'c': | |
79072805 | 9158 | complement = OPpTRANS_COMPLEMENT; |
7a1e2023 NC |
9159 | break; |
9160 | case 'd': | |
a0ed51b3 | 9161 | del = OPpTRANS_DELETE; |
7a1e2023 NC |
9162 | break; |
9163 | case 's': | |
79072805 | 9164 | squash = OPpTRANS_SQUASH; |
7a1e2023 | 9165 | break; |
bb16bae8 FC |
9166 | case 'r': |
9167 | nondestruct = 1; | |
9168 | break; | |
7a1e2023 NC |
9169 | default: |
9170 | goto no_more; | |
9171 | } | |
395c3793 LW |
9172 | s++; |
9173 | } | |
7a1e2023 | 9174 | no_more: |
8973db79 | 9175 | |
aa1f7c5b | 9176 | tbl = (short *)PerlMemShared_calloc(complement&&!del?258:256, sizeof(short)); |
bb16bae8 | 9177 | o = newPVOP(nondestruct ? OP_TRANSR : OP_TRANS, 0, (char*)tbl); |
59f00321 RGS |
9178 | o->op_private &= ~OPpTRANS_ALL; |
9179 | o->op_private |= del|squash|complement| | |
7948272d NIS |
9180 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
9181 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 9182 | |
3280af22 | 9183 | PL_lex_op = o; |
bb16bae8 | 9184 | pl_yylval.ival = nondestruct ? OP_TRANSR : OP_TRANS; |
5db06880 NC |
9185 | |
9186 | #ifdef PERL_MAD | |
9187 | if (PL_madskills) { | |
9188 | if (modstart != s) | |
9189 | curmad('m', newSVpvn(modstart, s - modstart)); | |
cd81e915 NC |
9190 | append_madprops(PL_thismad, o, 0); |
9191 | PL_thismad = 0; | |
5db06880 NC |
9192 | } |
9193 | #endif | |
9194 | ||
79072805 LW |
9195 | return s; |
9196 | } | |
9197 | ||
76e3520e | 9198 | STATIC char * |
cea2e8a9 | 9199 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 9200 | { |
97aff369 | 9201 | dVAR; |
79072805 LW |
9202 | SV *herewas; |
9203 | I32 op_type = OP_SCALAR; | |
9204 | I32 len; | |
9205 | SV *tmpstr; | |
9206 | char term; | |
73d840c0 | 9207 | const char *found_newline; |
79072805 | 9208 | register char *d; |
fc36a67e | 9209 | register char *e; |
4633a7c4 | 9210 | char *peek; |
f54cb97a | 9211 | const int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
5db06880 NC |
9212 | #ifdef PERL_MAD |
9213 | I32 stuffstart = s - SvPVX(PL_linestr); | |
9214 | char *tstart; | |
9215 | ||
cd81e915 | 9216 | PL_realtokenstart = -1; |
5db06880 | 9217 | #endif |
79072805 | 9218 | |
7918f24d NC |
9219 | PERL_ARGS_ASSERT_SCAN_HEREDOC; |
9220 | ||
79072805 | 9221 | s += 2; |
3280af22 NIS |
9222 | d = PL_tokenbuf; |
9223 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 9224 | if (!outer) |
79072805 | 9225 | *d++ = '\n'; |
c35e046a AL |
9226 | peek = s; |
9227 | while (SPACE_OR_TAB(*peek)) | |
9228 | peek++; | |
3792a11b | 9229 | if (*peek == '`' || *peek == '\'' || *peek =='"') { |
4633a7c4 | 9230 | s = peek; |
79072805 | 9231 | term = *s++; |
3280af22 | 9232 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 9233 | d += len; |
3280af22 | 9234 | if (s < PL_bufend) |
79072805 | 9235 | s++; |
79072805 LW |
9236 | } |
9237 | else { | |
9238 | if (*s == '\\') | |
9239 | s++, term = '\''; | |
9240 | else | |
9241 | term = '"'; | |
7e2040f0 | 9242 | if (!isALNUM_lazy_if(s,UTF)) |
8ab8f082 | 9243 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 9244 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 9245 | if (d < e) |
9246 | *d++ = *s; | |
9247 | } | |
9248 | } | |
3280af22 | 9249 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 9250 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
9251 | *d++ = '\n'; |
9252 | *d = '\0'; | |
3280af22 | 9253 | len = d - PL_tokenbuf; |
5db06880 NC |
9254 | |
9255 | #ifdef PERL_MAD | |
9256 | if (PL_madskills) { | |
9257 | tstart = PL_tokenbuf + !outer; | |
cd81e915 | 9258 | PL_thisclose = newSVpvn(tstart, len - !outer); |
5db06880 | 9259 | tstart = SvPVX(PL_linestr) + stuffstart; |
cd81e915 | 9260 | PL_thisopen = newSVpvn(tstart, s - tstart); |
5db06880 NC |
9261 | stuffstart = s - SvPVX(PL_linestr); |
9262 | } | |
9263 | #endif | |
6a27c188 | 9264 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
9265 | d = strchr(s, '\r'); |
9266 | if (d) { | |
b464bac0 | 9267 | char * const olds = s; |
f63a84b2 | 9268 | s = d; |
3280af22 | 9269 | while (s < PL_bufend) { |
f63a84b2 LW |
9270 | if (*s == '\r') { |
9271 | *d++ = '\n'; | |
9272 | if (*++s == '\n') | |
9273 | s++; | |
9274 | } | |
9275 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
9276 | *d++ = *s++; | |
9277 | s++; | |
9278 | } | |
9279 | else | |
9280 | *d++ = *s++; | |
9281 | } | |
9282 | *d = '\0'; | |
3280af22 | 9283 | PL_bufend = d; |
95a20fc0 | 9284 | SvCUR_set(PL_linestr, PL_bufend - SvPVX_const(PL_linestr)); |
f63a84b2 LW |
9285 | s = olds; |
9286 | } | |
9287 | #endif | |
5db06880 NC |
9288 | #ifdef PERL_MAD |
9289 | found_newline = 0; | |
9290 | #endif | |
10edeb5d | 9291 | if ( outer || !(found_newline = (char*)memchr((void*)s, '\n', PL_bufend - s)) ) { |
73d840c0 AL |
9292 | herewas = newSVpvn(s,PL_bufend-s); |
9293 | } | |
9294 | else { | |
5db06880 NC |
9295 | #ifdef PERL_MAD |
9296 | herewas = newSVpvn(s-1,found_newline-s+1); | |
9297 | #else | |
73d840c0 AL |
9298 | s--; |
9299 | herewas = newSVpvn(s,found_newline-s); | |
5db06880 | 9300 | #endif |
73d840c0 | 9301 | } |
5db06880 NC |
9302 | #ifdef PERL_MAD |
9303 | if (PL_madskills) { | |
9304 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
9305 | if (PL_thisstuff) |
9306 | sv_catpvn(PL_thisstuff, tstart, s - tstart); | |
5db06880 | 9307 | else |
cd81e915 | 9308 | PL_thisstuff = newSVpvn(tstart, s - tstart); |
5db06880 NC |
9309 | } |
9310 | #endif | |
79072805 | 9311 | s += SvCUR(herewas); |
748a9306 | 9312 | |
5db06880 NC |
9313 | #ifdef PERL_MAD |
9314 | stuffstart = s - SvPVX(PL_linestr); | |
9315 | ||
9316 | if (found_newline) | |
9317 | s--; | |
9318 | #endif | |
9319 | ||
7d0a29fe NC |
9320 | tmpstr = newSV_type(SVt_PVIV); |
9321 | SvGROW(tmpstr, 80); | |
748a9306 | 9322 | if (term == '\'') { |
79072805 | 9323 | op_type = OP_CONST; |
45977657 | 9324 | SvIV_set(tmpstr, -1); |
748a9306 LW |
9325 | } |
9326 | else if (term == '`') { | |
79072805 | 9327 | op_type = OP_BACKTICK; |
45977657 | 9328 | SvIV_set(tmpstr, '\\'); |
748a9306 | 9329 | } |
79072805 LW |
9330 | |
9331 | CLINE; | |
57843af0 | 9332 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
9333 | PL_multi_open = PL_multi_close = '<'; |
9334 | term = *PL_tokenbuf; | |
0244c3a4 | 9335 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6136c704 AL |
9336 | char * const bufptr = PL_sublex_info.super_bufptr; |
9337 | char * const bufend = PL_sublex_info.super_bufend; | |
b464bac0 | 9338 | char * const olds = s - SvCUR(herewas); |
0244c3a4 GS |
9339 | s = strchr(bufptr, '\n'); |
9340 | if (!s) | |
9341 | s = bufend; | |
9342 | d = s; | |
9343 | while (s < bufend && | |
9344 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
9345 | if (*s++ == '\n') | |
57843af0 | 9346 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
9347 | } |
9348 | if (s >= bufend) { | |
eb160463 | 9349 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
9350 | missingterm(PL_tokenbuf); |
9351 | } | |
9352 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
9353 | sv_setpvn(tmpstr,d+1,s-d); | |
9354 | s += len - 1; | |
9355 | sv_catpvn(herewas,s,bufend-s); | |
95a20fc0 | 9356 | Copy(SvPVX_const(herewas),bufptr,SvCUR(herewas) + 1,char); |
0244c3a4 GS |
9357 | |
9358 | s = olds; | |
9359 | goto retval; | |
9360 | } | |
9361 | else if (!outer) { | |
79072805 | 9362 | d = s; |
3280af22 NIS |
9363 | while (s < PL_bufend && |
9364 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 9365 | if (*s++ == '\n') |
57843af0 | 9366 | CopLINE_inc(PL_curcop); |
79072805 | 9367 | } |
3280af22 | 9368 | if (s >= PL_bufend) { |
eb160463 | 9369 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 9370 | missingterm(PL_tokenbuf); |
79072805 LW |
9371 | } |
9372 | sv_setpvn(tmpstr,d+1,s-d); | |
5db06880 NC |
9373 | #ifdef PERL_MAD |
9374 | if (PL_madskills) { | |
cd81e915 NC |
9375 | if (PL_thisstuff) |
9376 | sv_catpvn(PL_thisstuff, d + 1, s - d); | |
5db06880 | 9377 | else |
cd81e915 | 9378 | PL_thisstuff = newSVpvn(d + 1, s - d); |
5db06880 NC |
9379 | stuffstart = s - SvPVX(PL_linestr); |
9380 | } | |
9381 | #endif | |
79072805 | 9382 | s += len - 1; |
57843af0 | 9383 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 9384 | |
3280af22 NIS |
9385 | sv_catpvn(herewas,s,PL_bufend-s); |
9386 | sv_setsv(PL_linestr,herewas); | |
9387 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
9388 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 9389 | PL_last_lop = PL_last_uni = NULL; |
79072805 LW |
9390 | } |
9391 | else | |
76f68e9b | 9392 | sv_setpvs(tmpstr,""); /* avoid "uninitialized" warning */ |
3280af22 | 9393 | while (s >= PL_bufend) { /* multiple line string? */ |
5db06880 NC |
9394 | #ifdef PERL_MAD |
9395 | if (PL_madskills) { | |
9396 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
9397 | if (PL_thisstuff) |
9398 | sv_catpvn(PL_thisstuff, tstart, PL_bufend - tstart); | |
5db06880 | 9399 | else |
cd81e915 | 9400 | PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart); |
5db06880 NC |
9401 | } |
9402 | #endif | |
f0e67a1d | 9403 | PL_bufptr = s; |
17cc9359 | 9404 | CopLINE_inc(PL_curcop); |
f0e67a1d | 9405 | if (!outer || !lex_next_chunk(0)) { |
eb160463 | 9406 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 9407 | missingterm(PL_tokenbuf); |
79072805 | 9408 | } |
17cc9359 | 9409 | CopLINE_dec(PL_curcop); |
f0e67a1d | 9410 | s = PL_bufptr; |
5db06880 NC |
9411 | #ifdef PERL_MAD |
9412 | stuffstart = s - SvPVX(PL_linestr); | |
9413 | #endif | |
57843af0 | 9414 | CopLINE_inc(PL_curcop); |
3280af22 | 9415 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
bd61b366 | 9416 | PL_last_lop = PL_last_uni = NULL; |
6a27c188 | 9417 | #ifndef PERL_STRICT_CR |
3280af22 | 9418 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
9419 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
9420 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 9421 | { |
3280af22 NIS |
9422 | PL_bufend[-2] = '\n'; |
9423 | PL_bufend--; | |
95a20fc0 | 9424 | SvCUR_set(PL_linestr, PL_bufend - SvPVX_const(PL_linestr)); |
f63a84b2 | 9425 | } |
3280af22 NIS |
9426 | else if (PL_bufend[-1] == '\r') |
9427 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 9428 | } |
3280af22 NIS |
9429 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
9430 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 9431 | #endif |
3280af22 | 9432 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
95a20fc0 | 9433 | STRLEN off = PL_bufend - 1 - SvPVX_const(PL_linestr); |
1de9afcd | 9434 | *(SvPVX(PL_linestr) + off ) = ' '; |
37c6a70c | 9435 | lex_grow_linestr(SvCUR(PL_linestr) + SvCUR(herewas) + 1); |
3280af22 NIS |
9436 | sv_catsv(PL_linestr,herewas); |
9437 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1de9afcd | 9438 | s = SvPVX(PL_linestr) + off; /* In case PV of PL_linestr moved. */ |
79072805 LW |
9439 | } |
9440 | else { | |
3280af22 NIS |
9441 | s = PL_bufend; |
9442 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
9443 | } |
9444 | } | |
79072805 | 9445 | s++; |
0244c3a4 | 9446 | retval: |
57843af0 | 9447 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 9448 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
1da4ca5f | 9449 | SvPV_shrink_to_cur(tmpstr); |
79072805 | 9450 | } |
8990e307 | 9451 | SvREFCNT_dec(herewas); |
2f31ce75 | 9452 | if (!IN_BYTES) { |
95a20fc0 | 9453 | if (UTF && is_utf8_string((U8*)SvPVX_const(tmpstr), SvCUR(tmpstr))) |
2f31ce75 JH |
9454 | SvUTF8_on(tmpstr); |
9455 | else if (PL_encoding) | |
9456 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
9457 | } | |
3280af22 | 9458 | PL_lex_stuff = tmpstr; |
6154021b | 9459 | pl_yylval.ival = op_type; |
79072805 LW |
9460 | return s; |
9461 | } | |
9462 | ||
02aa26ce NT |
9463 | /* scan_inputsymbol |
9464 | takes: current position in input buffer | |
9465 | returns: new position in input buffer | |
6154021b | 9466 | side-effects: pl_yylval and lex_op are set. |
02aa26ce NT |
9467 | |
9468 | This code handles: | |
9469 | ||
9470 | <> read from ARGV | |
9471 | <FH> read from filehandle | |
9472 | <pkg::FH> read from package qualified filehandle | |
9473 | <pkg'FH> read from package qualified filehandle | |
9474 | <$fh> read from filehandle in $fh | |
9475 | <*.h> filename glob | |
9476 | ||
9477 | */ | |
9478 | ||
76e3520e | 9479 | STATIC char * |
cea2e8a9 | 9480 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 9481 | { |
97aff369 | 9482 | dVAR; |
02aa26ce | 9483 | register char *s = start; /* current position in buffer */ |
1b420867 | 9484 | char *end; |
79072805 | 9485 | I32 len; |
6136c704 AL |
9486 | char *d = PL_tokenbuf; /* start of temp holding space */ |
9487 | const char * const e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
9488 | ||
7918f24d NC |
9489 | PERL_ARGS_ASSERT_SCAN_INPUTSYMBOL; |
9490 | ||
1b420867 GS |
9491 | end = strchr(s, '\n'); |
9492 | if (!end) | |
9493 | end = PL_bufend; | |
9494 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
9495 | |
9496 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 9497 | or if it didn't end, or if we see a newline |
02aa26ce NT |
9498 | */ |
9499 | ||
bb7a0f54 | 9500 | if (len >= (I32)sizeof PL_tokenbuf) |
cea2e8a9 | 9501 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 9502 | if (s >= end) |
cea2e8a9 | 9503 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 9504 | |
fc36a67e | 9505 | s++; |
02aa26ce NT |
9506 | |
9507 | /* check for <$fh> | |
9508 | Remember, only scalar variables are interpreted as filehandles by | |
9509 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
9510 | treated as a glob() call. | |
9511 | This code makes use of the fact that except for the $ at the front, | |
9512 | a scalar variable and a filehandle look the same. | |
9513 | */ | |
4633a7c4 | 9514 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
9515 | |
9516 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 9517 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 9518 | d++; |
02aa26ce NT |
9519 | |
9520 | /* If we've tried to read what we allow filehandles to look like, and | |
9521 | there's still text left, then it must be a glob() and not a getline. | |
9522 | Use scan_str to pull out the stuff between the <> and treat it | |
9523 | as nothing more than a string. | |
9524 | */ | |
9525 | ||
3280af22 | 9526 | if (d - PL_tokenbuf != len) { |
6154021b | 9527 | pl_yylval.ival = OP_GLOB; |
5db06880 | 9528 | s = scan_str(start,!!PL_madskills,FALSE); |
79072805 | 9529 | if (!s) |
cea2e8a9 | 9530 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
9531 | return s; |
9532 | } | |
395c3793 | 9533 | else { |
9b3023bc | 9534 | bool readline_overriden = FALSE; |
6136c704 | 9535 | GV *gv_readline; |
9b3023bc | 9536 | GV **gvp; |
02aa26ce | 9537 | /* we're in a filehandle read situation */ |
3280af22 | 9538 | d = PL_tokenbuf; |
02aa26ce NT |
9539 | |
9540 | /* turn <> into <ARGV> */ | |
79072805 | 9541 | if (!len) |
689badd5 | 9542 | Copy("ARGV",d,5,char); |
02aa26ce | 9543 | |
9b3023bc | 9544 | /* Check whether readline() is overriden */ |
fafc274c | 9545 | gv_readline = gv_fetchpvs("readline", GV_NOTQUAL, SVt_PVCV); |
6136c704 | 9546 | if ((gv_readline |
ba979b31 | 9547 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) |
9b3023bc | 9548 | || |
017a3ce5 | 9549 | ((gvp = (GV**)hv_fetchs(PL_globalstash, "readline", FALSE)) |
9e0d86f8 | 9550 | && (gv_readline = *gvp) && isGV_with_GP(gv_readline) |
ba979b31 | 9551 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
9552 | readline_overriden = TRUE; |
9553 | ||
02aa26ce NT |
9554 | /* if <$fh>, create the ops to turn the variable into a |
9555 | filehandle | |
9556 | */ | |
79072805 | 9557 | if (*d == '$') { |
02aa26ce NT |
9558 | /* try to find it in the pad for this block, otherwise find |
9559 | add symbol table ops | |
9560 | */ | |
bc9b26ca | 9561 | const PADOFFSET tmp = pad_findmy_pvn(d, len, UTF ? SVf_UTF8 : 0); |
bbd11bfc | 9562 | if (tmp != NOT_IN_PAD) { |
00b1698f | 9563 | if (PAD_COMPNAME_FLAGS_isOUR(tmp)) { |
6136c704 AL |
9564 | HV * const stash = PAD_COMPNAME_OURSTASH(tmp); |
9565 | HEK * const stashname = HvNAME_HEK(stash); | |
9566 | SV * const sym = sv_2mortal(newSVhek(stashname)); | |
396482e1 | 9567 | sv_catpvs(sym, "::"); |
f558d5af JH |
9568 | sv_catpv(sym, d+1); |
9569 | d = SvPVX(sym); | |
9570 | goto intro_sym; | |
9571 | } | |
9572 | else { | |
6136c704 | 9573 | OP * const o = newOP(OP_PADSV, 0); |
f558d5af | 9574 | o->op_targ = tmp; |
9b3023bc RGS |
9575 | PL_lex_op = readline_overriden |
9576 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 9577 | op_append_elem(OP_LIST, o, |
9b3023bc RGS |
9578 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) |
9579 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 9580 | } |
a0d0e21e LW |
9581 | } |
9582 | else { | |
f558d5af JH |
9583 | GV *gv; |
9584 | ++d; | |
9585 | intro_sym: | |
9586 | gv = gv_fetchpv(d, | |
9587 | (PL_in_eval | |
9588 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 9589 | : GV_ADDMULTI), |
f558d5af | 9590 | SVt_PV); |
9b3023bc RGS |
9591 | PL_lex_op = readline_overriden |
9592 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 9593 | op_append_elem(OP_LIST, |
9b3023bc RGS |
9594 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), |
9595 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
9596 | : (OP*)newUNOP(OP_READLINE, 0, | |
9597 | newUNOP(OP_RV2SV, 0, | |
9598 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 9599 | } |
7c6fadd6 RGS |
9600 | if (!readline_overriden) |
9601 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
6154021b RGS |
9602 | /* we created the ops in PL_lex_op, so make pl_yylval.ival a null op */ |
9603 | pl_yylval.ival = OP_NULL; | |
79072805 | 9604 | } |
02aa26ce NT |
9605 | |
9606 | /* If it's none of the above, it must be a literal filehandle | |
9607 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 9608 | else { |
6136c704 | 9609 | GV * const gv = gv_fetchpv(d, GV_ADD, SVt_PVIO); |
9b3023bc RGS |
9610 | PL_lex_op = readline_overriden |
9611 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 9612 | op_append_elem(OP_LIST, |
9b3023bc RGS |
9613 | newGVOP(OP_GV, 0, gv), |
9614 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
9615 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
6154021b | 9616 | pl_yylval.ival = OP_NULL; |
79072805 LW |
9617 | } |
9618 | } | |
02aa26ce | 9619 | |
79072805 LW |
9620 | return s; |
9621 | } | |
9622 | ||
02aa26ce NT |
9623 | |
9624 | /* scan_str | |
9625 | takes: start position in buffer | |
09bef843 SB |
9626 | keep_quoted preserve \ on the embedded delimiter(s) |
9627 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
9628 | returns: position to continue reading from buffer |
9629 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
9630 | updates the read buffer. | |
9631 | ||
9632 | This subroutine pulls a string out of the input. It is called for: | |
9633 | q single quotes q(literal text) | |
9634 | ' single quotes 'literal text' | |
9635 | qq double quotes qq(interpolate $here please) | |
9636 | " double quotes "interpolate $here please" | |
9637 | qx backticks qx(/bin/ls -l) | |
9638 | ` backticks `/bin/ls -l` | |
9639 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
9640 | m// regexp match m/this/ | |
9641 | s/// regexp substitute s/this/that/ | |
9642 | tr/// string transliterate tr/this/that/ | |
9643 | y/// string transliterate y/this/that/ | |
9644 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 9645 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
9646 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
9647 | ||
9648 | In most of these cases (all but <>, patterns and transliterate) | |
9649 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
9650 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
9651 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
9652 | calls scan_str(). | |
4e553d73 | 9653 | |
02aa26ce NT |
9654 | It skips whitespace before the string starts, and treats the first |
9655 | character as the delimiter. If the delimiter is one of ([{< then | |
9656 | the corresponding "close" character )]}> is used as the closing | |
9657 | delimiter. It allows quoting of delimiters, and if the string has | |
9658 | balanced delimiters ([{<>}]) it allows nesting. | |
9659 | ||
37fd879b HS |
9660 | On success, the SV with the resulting string is put into lex_stuff or, |
9661 | if that is already non-NULL, into lex_repl. The second case occurs only | |
9662 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
9663 | For convenience, the terminating delimiter character is stuffed into | |
9664 | SvIVX of the SV. | |
02aa26ce NT |
9665 | */ |
9666 | ||
76e3520e | 9667 | STATIC char * |
09bef843 | 9668 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 9669 | { |
97aff369 | 9670 | dVAR; |
02aa26ce | 9671 | SV *sv; /* scalar value: string */ |
d3fcec1f | 9672 | const char *tmps; /* temp string, used for delimiter matching */ |
02aa26ce NT |
9673 | register char *s = start; /* current position in the buffer */ |
9674 | register char term; /* terminating character */ | |
9675 | register char *to; /* current position in the sv's data */ | |
9676 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 9677 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e | 9678 | I32 termcode; /* terminating char. code */ |
89ebb4a3 | 9679 | U8 termstr[UTF8_MAXBYTES]; /* terminating string */ |
220e2d4e | 9680 | STRLEN termlen; /* length of terminating string */ |
0331ef07 | 9681 | int last_off = 0; /* last position for nesting bracket */ |
5db06880 NC |
9682 | #ifdef PERL_MAD |
9683 | int stuffstart; | |
9684 | char *tstart; | |
9685 | #endif | |
02aa26ce | 9686 | |
7918f24d NC |
9687 | PERL_ARGS_ASSERT_SCAN_STR; |
9688 | ||
02aa26ce | 9689 | /* skip space before the delimiter */ |
29595ff2 NC |
9690 | if (isSPACE(*s)) { |
9691 | s = PEEKSPACE(s); | |
9692 | } | |
02aa26ce | 9693 | |
5db06880 | 9694 | #ifdef PERL_MAD |
cd81e915 NC |
9695 | if (PL_realtokenstart >= 0) { |
9696 | stuffstart = PL_realtokenstart; | |
9697 | PL_realtokenstart = -1; | |
5db06880 NC |
9698 | } |
9699 | else | |
9700 | stuffstart = start - SvPVX(PL_linestr); | |
9701 | #endif | |
02aa26ce | 9702 | /* mark where we are, in case we need to report errors */ |
79072805 | 9703 | CLINE; |
02aa26ce NT |
9704 | |
9705 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 9706 | term = *s; |
220e2d4e IH |
9707 | if (!UTF) { |
9708 | termcode = termstr[0] = term; | |
9709 | termlen = 1; | |
9710 | } | |
9711 | else { | |
f3b9ce0f | 9712 | termcode = utf8_to_uvchr((U8*)s, &termlen); |
220e2d4e IH |
9713 | Copy(s, termstr, termlen, U8); |
9714 | if (!UTF8_IS_INVARIANT(term)) | |
9715 | has_utf8 = TRUE; | |
9716 | } | |
b1c7b182 | 9717 | |
02aa26ce | 9718 | /* mark where we are */ |
57843af0 | 9719 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 9720 | PL_multi_open = term; |
02aa26ce NT |
9721 | |
9722 | /* find corresponding closing delimiter */ | |
93a17b20 | 9723 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
9724 | termcode = termstr[0] = term = tmps[5]; |
9725 | ||
3280af22 | 9726 | PL_multi_close = term; |
79072805 | 9727 | |
561b68a9 SH |
9728 | /* create a new SV to hold the contents. 79 is the SV's initial length. |
9729 | What a random number. */ | |
7d0a29fe NC |
9730 | sv = newSV_type(SVt_PVIV); |
9731 | SvGROW(sv, 80); | |
45977657 | 9732 | SvIV_set(sv, termcode); |
a0d0e21e | 9733 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
9734 | |
9735 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 9736 | if (keep_delims) |
220e2d4e IH |
9737 | sv_catpvn(sv, s, termlen); |
9738 | s += termlen; | |
5db06880 NC |
9739 | #ifdef PERL_MAD |
9740 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
9741 | if (!PL_thisopen && !keep_delims) { |
9742 | PL_thisopen = newSVpvn(tstart, s - tstart); | |
5db06880 NC |
9743 | stuffstart = s - SvPVX(PL_linestr); |
9744 | } | |
9745 | #endif | |
93a17b20 | 9746 | for (;;) { |
220e2d4e IH |
9747 | if (PL_encoding && !UTF) { |
9748 | bool cont = TRUE; | |
9749 | ||
9750 | while (cont) { | |
95a20fc0 | 9751 | int offset = s - SvPVX_const(PL_linestr); |
66a1b24b | 9752 | const bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, |
f3b9ce0f | 9753 | &offset, (char*)termstr, termlen); |
6136c704 AL |
9754 | const char * const ns = SvPVX_const(PL_linestr) + offset; |
9755 | char * const svlast = SvEND(sv) - 1; | |
220e2d4e IH |
9756 | |
9757 | for (; s < ns; s++) { | |
9758 | if (*s == '\n' && !PL_rsfp) | |
9759 | CopLINE_inc(PL_curcop); | |
9760 | } | |
9761 | if (!found) | |
9762 | goto read_more_line; | |
9763 | else { | |
9764 | /* handle quoted delimiters */ | |
52327caf | 9765 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
f54cb97a | 9766 | const char *t; |
95a20fc0 | 9767 | for (t = svlast-2; t >= SvPVX_const(sv) && *t == '\\';) |
220e2d4e IH |
9768 | t--; |
9769 | if ((svlast-1 - t) % 2) { | |
9770 | if (!keep_quoted) { | |
9771 | *(svlast-1) = term; | |
9772 | *svlast = '\0'; | |
9773 | SvCUR_set(sv, SvCUR(sv) - 1); | |
9774 | } | |
9775 | continue; | |
9776 | } | |
9777 | } | |
9778 | if (PL_multi_open == PL_multi_close) { | |
9779 | cont = FALSE; | |
9780 | } | |
9781 | else { | |
f54cb97a AL |
9782 | const char *t; |
9783 | char *w; | |
0331ef07 | 9784 | for (t = w = SvPVX(sv)+last_off; t < svlast; w++, t++) { |
220e2d4e IH |
9785 | /* At here, all closes are "was quoted" one, |
9786 | so we don't check PL_multi_close. */ | |
9787 | if (*t == '\\') { | |
9788 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
9789 | t++; | |
9790 | else | |
9791 | *w++ = *t++; | |
9792 | } | |
9793 | else if (*t == PL_multi_open) | |
9794 | brackets++; | |
9795 | ||
9796 | *w = *t; | |
9797 | } | |
9798 | if (w < t) { | |
9799 | *w++ = term; | |
9800 | *w = '\0'; | |
95a20fc0 | 9801 | SvCUR_set(sv, w - SvPVX_const(sv)); |
220e2d4e | 9802 | } |
0331ef07 | 9803 | last_off = w - SvPVX(sv); |
220e2d4e IH |
9804 | if (--brackets <= 0) |
9805 | cont = FALSE; | |
9806 | } | |
9807 | } | |
9808 | } | |
9809 | if (!keep_delims) { | |
9810 | SvCUR_set(sv, SvCUR(sv) - 1); | |
9811 | *SvEND(sv) = '\0'; | |
9812 | } | |
9813 | break; | |
9814 | } | |
9815 | ||
02aa26ce | 9816 | /* extend sv if need be */ |
3280af22 | 9817 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 9818 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 9819 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 9820 | |
02aa26ce | 9821 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
9822 | if (PL_multi_open == PL_multi_close) { |
9823 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 9824 | /* embedded newlines increment the current line number */ |
3280af22 | 9825 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 9826 | CopLINE_inc(PL_curcop); |
02aa26ce | 9827 | /* handle quoted delimiters */ |
3280af22 | 9828 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 9829 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 9830 | s++; |
02aa26ce | 9831 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
9832 | else |
9833 | *to++ = *s++; | |
9834 | } | |
02aa26ce NT |
9835 | /* terminate when run out of buffer (the for() condition), or |
9836 | have found the terminator */ | |
220e2d4e IH |
9837 | else if (*s == term) { |
9838 | if (termlen == 1) | |
9839 | break; | |
f3b9ce0f | 9840 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
9841 | break; |
9842 | } | |
63cd0674 | 9843 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 9844 | has_utf8 = TRUE; |
93a17b20 LW |
9845 | *to = *s; |
9846 | } | |
9847 | } | |
02aa26ce NT |
9848 | |
9849 | /* if the terminator isn't the same as the start character (e.g., | |
9850 | matched brackets), we have to allow more in the quoting, and | |
9851 | be prepared for nested brackets. | |
9852 | */ | |
93a17b20 | 9853 | else { |
02aa26ce | 9854 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 9855 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 9856 | /* embedded newlines increment the line count */ |
3280af22 | 9857 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 9858 | CopLINE_inc(PL_curcop); |
02aa26ce | 9859 | /* backslashes can escape the open or closing characters */ |
3280af22 | 9860 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
9861 | if (!keep_quoted && |
9862 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
9863 | s++; |
9864 | else | |
9865 | *to++ = *s++; | |
9866 | } | |
02aa26ce | 9867 | /* allow nested opens and closes */ |
3280af22 | 9868 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 9869 | break; |
3280af22 | 9870 | else if (*s == PL_multi_open) |
93a17b20 | 9871 | brackets++; |
63cd0674 | 9872 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 9873 | has_utf8 = TRUE; |
93a17b20 LW |
9874 | *to = *s; |
9875 | } | |
9876 | } | |
02aa26ce | 9877 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 9878 | *to = '\0'; |
95a20fc0 | 9879 | SvCUR_set(sv, to - SvPVX_const(sv)); |
93a17b20 | 9880 | |
02aa26ce NT |
9881 | /* |
9882 | * this next chunk reads more into the buffer if we're not done yet | |
9883 | */ | |
9884 | ||
b1c7b182 GS |
9885 | if (s < PL_bufend) |
9886 | break; /* handle case where we are done yet :-) */ | |
79072805 | 9887 | |
6a27c188 | 9888 | #ifndef PERL_STRICT_CR |
95a20fc0 | 9889 | if (to - SvPVX_const(sv) >= 2) { |
c6f14548 GS |
9890 | if ((to[-2] == '\r' && to[-1] == '\n') || |
9891 | (to[-2] == '\n' && to[-1] == '\r')) | |
9892 | { | |
f63a84b2 LW |
9893 | to[-2] = '\n'; |
9894 | to--; | |
95a20fc0 | 9895 | SvCUR_set(sv, to - SvPVX_const(sv)); |
f63a84b2 LW |
9896 | } |
9897 | else if (to[-1] == '\r') | |
9898 | to[-1] = '\n'; | |
9899 | } | |
95a20fc0 | 9900 | else if (to - SvPVX_const(sv) == 1 && to[-1] == '\r') |
f63a84b2 LW |
9901 | to[-1] = '\n'; |
9902 | #endif | |
9903 | ||
220e2d4e | 9904 | read_more_line: |
02aa26ce NT |
9905 | /* if we're out of file, or a read fails, bail and reset the current |
9906 | line marker so we can report where the unterminated string began | |
9907 | */ | |
5db06880 NC |
9908 | #ifdef PERL_MAD |
9909 | if (PL_madskills) { | |
c35e046a | 9910 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
cd81e915 NC |
9911 | if (PL_thisstuff) |
9912 | sv_catpvn(PL_thisstuff, tstart, PL_bufend - tstart); | |
5db06880 | 9913 | else |
cd81e915 | 9914 | PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart); |
5db06880 NC |
9915 | } |
9916 | #endif | |
f0e67a1d Z |
9917 | CopLINE_inc(PL_curcop); |
9918 | PL_bufptr = PL_bufend; | |
9919 | if (!lex_next_chunk(0)) { | |
c07a80fd | 9920 | sv_free(sv); |
eb160463 | 9921 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
bd61b366 | 9922 | return NULL; |
79072805 | 9923 | } |
f0e67a1d | 9924 | s = PL_bufptr; |
5db06880 NC |
9925 | #ifdef PERL_MAD |
9926 | stuffstart = 0; | |
9927 | #endif | |
378cc40b | 9928 | } |
4e553d73 | 9929 | |
02aa26ce NT |
9930 | /* at this point, we have successfully read the delimited string */ |
9931 | ||
220e2d4e | 9932 | if (!PL_encoding || UTF) { |
5db06880 NC |
9933 | #ifdef PERL_MAD |
9934 | if (PL_madskills) { | |
c35e046a | 9935 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
29522234 | 9936 | const int len = s - tstart; |
cd81e915 | 9937 | if (PL_thisstuff) |
c35e046a | 9938 | sv_catpvn(PL_thisstuff, tstart, len); |
5db06880 | 9939 | else |
c35e046a | 9940 | PL_thisstuff = newSVpvn(tstart, len); |
cd81e915 NC |
9941 | if (!PL_thisclose && !keep_delims) |
9942 | PL_thisclose = newSVpvn(s,termlen); | |
5db06880 NC |
9943 | } |
9944 | #endif | |
9945 | ||
220e2d4e IH |
9946 | if (keep_delims) |
9947 | sv_catpvn(sv, s, termlen); | |
9948 | s += termlen; | |
9949 | } | |
5db06880 NC |
9950 | #ifdef PERL_MAD |
9951 | else { | |
9952 | if (PL_madskills) { | |
c35e046a AL |
9953 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
9954 | const int len = s - tstart - termlen; | |
cd81e915 | 9955 | if (PL_thisstuff) |
c35e046a | 9956 | sv_catpvn(PL_thisstuff, tstart, len); |
5db06880 | 9957 | else |
c35e046a | 9958 | PL_thisstuff = newSVpvn(tstart, len); |
cd81e915 NC |
9959 | if (!PL_thisclose && !keep_delims) |
9960 | PL_thisclose = newSVpvn(s - termlen,termlen); | |
5db06880 NC |
9961 | } |
9962 | } | |
9963 | #endif | |
220e2d4e | 9964 | if (has_utf8 || PL_encoding) |
b1c7b182 | 9965 | SvUTF8_on(sv); |
d0063567 | 9966 | |
57843af0 | 9967 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
9968 | |
9969 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
9970 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
9971 | SvLEN_set(sv, SvCUR(sv) + 1); | |
b7e9a5c2 | 9972 | SvPV_renew(sv, SvLEN(sv)); |
79072805 | 9973 | } |
02aa26ce NT |
9974 | |
9975 | /* decide whether this is the first or second quoted string we've read | |
9976 | for this op | |
9977 | */ | |
4e553d73 | 9978 | |
3280af22 NIS |
9979 | if (PL_lex_stuff) |
9980 | PL_lex_repl = sv; | |
79072805 | 9981 | else |
3280af22 | 9982 | PL_lex_stuff = sv; |
378cc40b LW |
9983 | return s; |
9984 | } | |
9985 | ||
02aa26ce NT |
9986 | /* |
9987 | scan_num | |
9988 | takes: pointer to position in buffer | |
9989 | returns: pointer to new position in buffer | |
6154021b | 9990 | side-effects: builds ops for the constant in pl_yylval.op |
02aa26ce NT |
9991 | |
9992 | Read a number in any of the formats that Perl accepts: | |
9993 | ||
7fd134d9 JH |
9994 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
9995 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
9996 | 0b[01](_?[01])* |
9997 | 0[0-7](_?[0-7])* | |
9998 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 9999 | |
3280af22 | 10000 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
10001 | thing it reads. |
10002 | ||
10003 | If it reads a number without a decimal point or an exponent, it will | |
10004 | try converting the number to an integer and see if it can do so | |
10005 | without loss of precision. | |
10006 | */ | |
4e553d73 | 10007 | |
378cc40b | 10008 | char * |
bfed75c6 | 10009 | Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp) |
378cc40b | 10010 | { |
97aff369 | 10011 | dVAR; |
bfed75c6 | 10012 | register const char *s = start; /* current position in buffer */ |
02aa26ce NT |
10013 | register char *d; /* destination in temp buffer */ |
10014 | register char *e; /* end of temp buffer */ | |
86554af2 | 10015 | NV nv; /* number read, as a double */ |
a0714e2c | 10016 | SV *sv = NULL; /* place to put the converted number */ |
a86a20aa | 10017 | bool floatit; /* boolean: int or float? */ |
cbbf8932 | 10018 | const char *lastub = NULL; /* position of last underbar */ |
bfed75c6 | 10019 | static char const number_too_long[] = "Number too long"; |
378cc40b | 10020 | |
7918f24d NC |
10021 | PERL_ARGS_ASSERT_SCAN_NUM; |
10022 | ||
02aa26ce NT |
10023 | /* We use the first character to decide what type of number this is */ |
10024 | ||
378cc40b | 10025 | switch (*s) { |
79072805 | 10026 | default: |
cea2e8a9 | 10027 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 10028 | |
02aa26ce | 10029 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 10030 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
10031 | case '0': |
10032 | { | |
02aa26ce NT |
10033 | /* variables: |
10034 | u holds the "number so far" | |
4f19785b WSI |
10035 | shift the power of 2 of the base |
10036 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
10037 | overflowed was the number more than we can hold? |
10038 | ||
10039 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
10040 | we in octal/hex/binary?" indicator to disallow hex characters |
10041 | when in octal mode. | |
02aa26ce | 10042 | */ |
9e24b6e2 JH |
10043 | NV n = 0.0; |
10044 | UV u = 0; | |
79072805 | 10045 | I32 shift; |
9e24b6e2 | 10046 | bool overflowed = FALSE; |
61f33854 | 10047 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
27da23d5 JH |
10048 | static const NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
10049 | static const char* const bases[5] = | |
10050 | { "", "binary", "", "octal", "hexadecimal" }; | |
10051 | static const char* const Bases[5] = | |
10052 | { "", "Binary", "", "Octal", "Hexadecimal" }; | |
10053 | static const char* const maxima[5] = | |
10054 | { "", | |
10055 | "0b11111111111111111111111111111111", | |
10056 | "", | |
10057 | "037777777777", | |
10058 | "0xffffffff" }; | |
bfed75c6 | 10059 | const char *base, *Base, *max; |
378cc40b | 10060 | |
02aa26ce | 10061 | /* check for hex */ |
a674e8db | 10062 | if (s[1] == 'x' || s[1] == 'X') { |
378cc40b LW |
10063 | shift = 4; |
10064 | s += 2; | |
61f33854 | 10065 | just_zero = FALSE; |
a674e8db | 10066 | } else if (s[1] == 'b' || s[1] == 'B') { |
4f19785b WSI |
10067 | shift = 1; |
10068 | s += 2; | |
61f33854 | 10069 | just_zero = FALSE; |
378cc40b | 10070 | } |
02aa26ce | 10071 | /* check for a decimal in disguise */ |
b78218b7 | 10072 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 10073 | goto decimal; |
02aa26ce | 10074 | /* so it must be octal */ |
928753ea | 10075 | else { |
378cc40b | 10076 | shift = 3; |
928753ea JH |
10077 | s++; |
10078 | } | |
10079 | ||
10080 | if (*s == '_') { | |
a2a5de95 | 10081 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
10082 | "Misplaced _ in number"); |
10083 | lastub = s++; | |
10084 | } | |
9e24b6e2 JH |
10085 | |
10086 | base = bases[shift]; | |
10087 | Base = Bases[shift]; | |
10088 | max = maxima[shift]; | |
02aa26ce | 10089 | |
4f19785b | 10090 | /* read the rest of the number */ |
378cc40b | 10091 | for (;;) { |
9e24b6e2 | 10092 | /* x is used in the overflow test, |
893fe2c2 | 10093 | b is the digit we're adding on. */ |
9e24b6e2 | 10094 | UV x, b; |
55497cff | 10095 | |
378cc40b | 10096 | switch (*s) { |
02aa26ce NT |
10097 | |
10098 | /* if we don't mention it, we're done */ | |
378cc40b LW |
10099 | default: |
10100 | goto out; | |
02aa26ce | 10101 | |
928753ea | 10102 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 10103 | case '_': |
a2a5de95 NC |
10104 | if (lastub && s == lastub + 1) |
10105 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10106 | "Misplaced _ in number"); | |
928753ea | 10107 | lastub = s++; |
de3bb511 | 10108 | break; |
02aa26ce NT |
10109 | |
10110 | /* 8 and 9 are not octal */ | |
378cc40b | 10111 | case '8': case '9': |
4f19785b | 10112 | if (shift == 3) |
cea2e8a9 | 10113 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 10114 | /* FALL THROUGH */ |
02aa26ce NT |
10115 | |
10116 | /* octal digits */ | |
4f19785b | 10117 | case '2': case '3': case '4': |
378cc40b | 10118 | case '5': case '6': case '7': |
4f19785b | 10119 | if (shift == 1) |
cea2e8a9 | 10120 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
10121 | /* FALL THROUGH */ |
10122 | ||
10123 | case '0': case '1': | |
02aa26ce | 10124 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 10125 | goto digit; |
02aa26ce NT |
10126 | |
10127 | /* hex digits */ | |
378cc40b LW |
10128 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
10129 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 10130 | /* make sure they said 0x */ |
378cc40b LW |
10131 | if (shift != 4) |
10132 | goto out; | |
55497cff | 10133 | b = (*s++ & 7) + 9; |
02aa26ce NT |
10134 | |
10135 | /* Prepare to put the digit we have onto the end | |
10136 | of the number so far. We check for overflows. | |
10137 | */ | |
10138 | ||
55497cff | 10139 | digit: |
61f33854 | 10140 | just_zero = FALSE; |
9e24b6e2 JH |
10141 | if (!overflowed) { |
10142 | x = u << shift; /* make room for the digit */ | |
10143 | ||
10144 | if ((x >> shift) != u | |
10145 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
10146 | overflowed = TRUE; |
10147 | n = (NV) u; | |
9b387841 NC |
10148 | Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW), |
10149 | "Integer overflow in %s number", | |
10150 | base); | |
9e24b6e2 JH |
10151 | } else |
10152 | u = x | b; /* add the digit to the end */ | |
10153 | } | |
10154 | if (overflowed) { | |
10155 | n *= nvshift[shift]; | |
10156 | /* If an NV has not enough bits in its | |
10157 | * mantissa to represent an UV this summing of | |
10158 | * small low-order numbers is a waste of time | |
10159 | * (because the NV cannot preserve the | |
10160 | * low-order bits anyway): we could just | |
10161 | * remember when did we overflow and in the | |
10162 | * end just multiply n by the right | |
10163 | * amount. */ | |
10164 | n += (NV) b; | |
55497cff | 10165 | } |
378cc40b LW |
10166 | break; |
10167 | } | |
10168 | } | |
02aa26ce NT |
10169 | |
10170 | /* if we get here, we had success: make a scalar value from | |
10171 | the number. | |
10172 | */ | |
378cc40b | 10173 | out: |
928753ea JH |
10174 | |
10175 | /* final misplaced underbar check */ | |
10176 | if (s[-1] == '_') { | |
a2a5de95 | 10177 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
10178 | } |
10179 | ||
9e24b6e2 | 10180 | if (overflowed) { |
a2a5de95 NC |
10181 | if (n > 4294967295.0) |
10182 | Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), | |
10183 | "%s number > %s non-portable", | |
10184 | Base, max); | |
b081dd7e | 10185 | sv = newSVnv(n); |
9e24b6e2 JH |
10186 | } |
10187 | else { | |
15041a67 | 10188 | #if UVSIZE > 4 |
a2a5de95 NC |
10189 | if (u > 0xffffffff) |
10190 | Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), | |
10191 | "%s number > %s non-portable", | |
10192 | Base, max); | |
2cc4c2dc | 10193 | #endif |
b081dd7e | 10194 | sv = newSVuv(u); |
9e24b6e2 | 10195 | } |
61f33854 | 10196 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
bfed75c6 | 10197 | sv = new_constant(start, s - start, "integer", |
eb0d8d16 | 10198 | sv, NULL, NULL, 0); |
61f33854 | 10199 | else if (PL_hints & HINT_NEW_BINARY) |
eb0d8d16 | 10200 | sv = new_constant(start, s - start, "binary", sv, NULL, NULL, 0); |
378cc40b LW |
10201 | } |
10202 | break; | |
02aa26ce NT |
10203 | |
10204 | /* | |
10205 | handle decimal numbers. | |
10206 | we're also sent here when we read a 0 as the first digit | |
10207 | */ | |
378cc40b LW |
10208 | case '1': case '2': case '3': case '4': case '5': |
10209 | case '6': case '7': case '8': case '9': case '.': | |
10210 | decimal: | |
3280af22 NIS |
10211 | d = PL_tokenbuf; |
10212 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 10213 | floatit = FALSE; |
02aa26ce NT |
10214 | |
10215 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 10216 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 10217 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
10218 | if -w is on |
10219 | */ | |
93a17b20 | 10220 | if (*s == '_') { |
a2a5de95 NC |
10221 | if (lastub && s == lastub + 1) |
10222 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10223 | "Misplaced _ in number"); | |
928753ea | 10224 | lastub = s++; |
93a17b20 | 10225 | } |
fc36a67e | 10226 | else { |
02aa26ce | 10227 | /* check for end of fixed-length buffer */ |
fc36a67e | 10228 | if (d >= e) |
cea2e8a9 | 10229 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 10230 | /* if we're ok, copy the character */ |
378cc40b | 10231 | *d++ = *s++; |
fc36a67e | 10232 | } |
378cc40b | 10233 | } |
02aa26ce NT |
10234 | |
10235 | /* final misplaced underbar check */ | |
928753ea | 10236 | if (lastub && s == lastub + 1) { |
a2a5de95 | 10237 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 10238 | } |
02aa26ce NT |
10239 | |
10240 | /* read a decimal portion if there is one. avoid | |
10241 | 3..5 being interpreted as the number 3. followed | |
10242 | by .5 | |
10243 | */ | |
2f3197b3 | 10244 | if (*s == '.' && s[1] != '.') { |
79072805 | 10245 | floatit = TRUE; |
378cc40b | 10246 | *d++ = *s++; |
02aa26ce | 10247 | |
928753ea | 10248 | if (*s == '_') { |
a2a5de95 NC |
10249 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10250 | "Misplaced _ in number"); | |
928753ea JH |
10251 | lastub = s; |
10252 | } | |
10253 | ||
10254 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 10255 | */ |
fc36a67e | 10256 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 10257 | /* fixed length buffer check */ |
fc36a67e | 10258 | if (d >= e) |
cea2e8a9 | 10259 | Perl_croak(aTHX_ number_too_long); |
928753ea | 10260 | if (*s == '_') { |
a2a5de95 NC |
10261 | if (lastub && s == lastub + 1) |
10262 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10263 | "Misplaced _ in number"); | |
928753ea JH |
10264 | lastub = s; |
10265 | } | |
10266 | else | |
fc36a67e | 10267 | *d++ = *s; |
378cc40b | 10268 | } |
928753ea JH |
10269 | /* fractional part ending in underbar? */ |
10270 | if (s[-1] == '_') { | |
a2a5de95 NC |
10271 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10272 | "Misplaced _ in number"); | |
928753ea | 10273 | } |
dd629d5b GS |
10274 | if (*s == '.' && isDIGIT(s[1])) { |
10275 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 10276 | s = start; |
dd629d5b GS |
10277 | goto vstring; |
10278 | } | |
378cc40b | 10279 | } |
02aa26ce NT |
10280 | |
10281 | /* read exponent part, if present */ | |
3792a11b | 10282 | if ((*s == 'e' || *s == 'E') && strchr("+-0123456789_", s[1])) { |
79072805 LW |
10283 | floatit = TRUE; |
10284 | s++; | |
02aa26ce NT |
10285 | |
10286 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 10287 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 10288 | |
7fd134d9 JH |
10289 | /* stray preinitial _ */ |
10290 | if (*s == '_') { | |
a2a5de95 NC |
10291 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10292 | "Misplaced _ in number"); | |
7fd134d9 JH |
10293 | lastub = s++; |
10294 | } | |
10295 | ||
02aa26ce | 10296 | /* allow positive or negative exponent */ |
378cc40b LW |
10297 | if (*s == '+' || *s == '-') |
10298 | *d++ = *s++; | |
02aa26ce | 10299 | |
7fd134d9 JH |
10300 | /* stray initial _ */ |
10301 | if (*s == '_') { | |
a2a5de95 NC |
10302 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10303 | "Misplaced _ in number"); | |
7fd134d9 JH |
10304 | lastub = s++; |
10305 | } | |
10306 | ||
7fd134d9 JH |
10307 | /* read digits of exponent */ |
10308 | while (isDIGIT(*s) || *s == '_') { | |
10309 | if (isDIGIT(*s)) { | |
10310 | if (d >= e) | |
10311 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 10312 | *d++ = *s++; |
7fd134d9 JH |
10313 | } |
10314 | else { | |
041457d9 | 10315 | if (((lastub && s == lastub + 1) || |
a2a5de95 NC |
10316 | (!isDIGIT(s[1]) && s[1] != '_'))) |
10317 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10318 | "Misplaced _ in number"); | |
b3b48e3e | 10319 | lastub = s++; |
7fd134d9 | 10320 | } |
7fd134d9 | 10321 | } |
378cc40b | 10322 | } |
02aa26ce | 10323 | |
02aa26ce | 10324 | |
0b7fceb9 | 10325 | /* |
58bb9ec3 NC |
10326 | We try to do an integer conversion first if no characters |
10327 | indicating "float" have been found. | |
0b7fceb9 MU |
10328 | */ |
10329 | ||
10330 | if (!floatit) { | |
58bb9ec3 | 10331 | UV uv; |
6136c704 | 10332 | const int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); |
58bb9ec3 NC |
10333 | |
10334 | if (flags == IS_NUMBER_IN_UV) { | |
10335 | if (uv <= IV_MAX) | |
b081dd7e | 10336 | sv = newSViv(uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 10337 | else |
b081dd7e | 10338 | sv = newSVuv(uv); |
58bb9ec3 NC |
10339 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
10340 | if (uv <= (UV) IV_MIN) | |
b081dd7e | 10341 | sv = newSViv(-(IV)uv); |
58bb9ec3 NC |
10342 | else |
10343 | floatit = TRUE; | |
10344 | } else | |
10345 | floatit = TRUE; | |
10346 | } | |
0b7fceb9 | 10347 | if (floatit) { |
58bb9ec3 NC |
10348 | /* terminate the string */ |
10349 | *d = '\0'; | |
86554af2 | 10350 | nv = Atof(PL_tokenbuf); |
b081dd7e | 10351 | sv = newSVnv(nv); |
86554af2 | 10352 | } |
86554af2 | 10353 | |
eb0d8d16 NC |
10354 | if ( floatit |
10355 | ? (PL_hints & HINT_NEW_FLOAT) : (PL_hints & HINT_NEW_INTEGER) ) { | |
10356 | const char *const key = floatit ? "float" : "integer"; | |
10357 | const STRLEN keylen = floatit ? 5 : 7; | |
10358 | sv = S_new_constant(aTHX_ PL_tokenbuf, d - PL_tokenbuf, | |
10359 | key, keylen, sv, NULL, NULL, 0); | |
10360 | } | |
378cc40b | 10361 | break; |
0b7fceb9 | 10362 | |
e312add1 | 10363 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 10364 | case 'v': |
dd629d5b | 10365 | vstring: |
561b68a9 | 10366 | sv = newSV(5); /* preallocate storage space */ |
65b06e02 | 10367 | s = scan_vstring(s, PL_bufend, sv); |
a7cb1f99 | 10368 | break; |
79072805 | 10369 | } |
a687059c | 10370 | |
02aa26ce NT |
10371 | /* make the op for the constant and return */ |
10372 | ||
a86a20aa | 10373 | if (sv) |
b73d6f50 | 10374 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 10375 | else |
5f66b61c | 10376 | lvalp->opval = NULL; |
a687059c | 10377 | |
73d840c0 | 10378 | return (char *)s; |
378cc40b LW |
10379 | } |
10380 | ||
76e3520e | 10381 | STATIC char * |
cea2e8a9 | 10382 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 10383 | { |
97aff369 | 10384 | dVAR; |
79072805 | 10385 | register char *eol; |
378cc40b | 10386 | register char *t; |
6136c704 | 10387 | SV * const stuff = newSVpvs(""); |
79072805 | 10388 | bool needargs = FALSE; |
c5ee2135 | 10389 | bool eofmt = FALSE; |
5db06880 NC |
10390 | #ifdef PERL_MAD |
10391 | char *tokenstart = s; | |
4f61fd4b JC |
10392 | SV* savewhite = NULL; |
10393 | ||
5db06880 | 10394 | if (PL_madskills) { |
cd81e915 NC |
10395 | savewhite = PL_thiswhite; |
10396 | PL_thiswhite = 0; | |
5db06880 NC |
10397 | } |
10398 | #endif | |
378cc40b | 10399 | |
7918f24d NC |
10400 | PERL_ARGS_ASSERT_SCAN_FORMLINE; |
10401 | ||
79072805 | 10402 | while (!needargs) { |
a1b95068 | 10403 | if (*s == '.') { |
c35e046a | 10404 | t = s+1; |
51882d45 | 10405 | #ifdef PERL_STRICT_CR |
c35e046a AL |
10406 | while (SPACE_OR_TAB(*t)) |
10407 | t++; | |
51882d45 | 10408 | #else |
c35e046a AL |
10409 | while (SPACE_OR_TAB(*t) || *t == '\r') |
10410 | t++; | |
51882d45 | 10411 | #endif |
c5ee2135 WL |
10412 | if (*t == '\n' || t == PL_bufend) { |
10413 | eofmt = TRUE; | |
79072805 | 10414 | break; |
c5ee2135 | 10415 | } |
79072805 | 10416 | } |
3280af22 | 10417 | if (PL_in_eval && !PL_rsfp) { |
07409e01 | 10418 | eol = (char *) memchr(s,'\n',PL_bufend-s); |
0f85fab0 | 10419 | if (!eol++) |
3280af22 | 10420 | eol = PL_bufend; |
0f85fab0 LW |
10421 | } |
10422 | else | |
3280af22 | 10423 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 10424 | if (*s != '#') { |
a0d0e21e LW |
10425 | for (t = s; t < eol; t++) { |
10426 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
10427 | needargs = FALSE; | |
10428 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 10429 | } |
a0d0e21e LW |
10430 | if (*t == '@' || *t == '^') |
10431 | needargs = TRUE; | |
378cc40b | 10432 | } |
7121b347 MG |
10433 | if (eol > s) { |
10434 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 10435 | #ifndef PERL_STRICT_CR |
7121b347 MG |
10436 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
10437 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
10438 | end[-2] = '\n'; | |
10439 | end[-1] = '\0'; | |
b162af07 | 10440 | SvCUR_set(stuff, SvCUR(stuff) - 1); |
7121b347 | 10441 | } |
2dc4c65b | 10442 | #endif |
7121b347 MG |
10443 | } |
10444 | else | |
10445 | break; | |
79072805 | 10446 | } |
95a20fc0 | 10447 | s = (char*)eol; |
3280af22 | 10448 | if (PL_rsfp) { |
f0e67a1d | 10449 | bool got_some; |
5db06880 NC |
10450 | #ifdef PERL_MAD |
10451 | if (PL_madskills) { | |
cd81e915 NC |
10452 | if (PL_thistoken) |
10453 | sv_catpvn(PL_thistoken, tokenstart, PL_bufend - tokenstart); | |
5db06880 | 10454 | else |
cd81e915 | 10455 | PL_thistoken = newSVpvn(tokenstart, PL_bufend - tokenstart); |
5db06880 NC |
10456 | } |
10457 | #endif | |
f0e67a1d Z |
10458 | PL_bufptr = PL_bufend; |
10459 | CopLINE_inc(PL_curcop); | |
10460 | got_some = lex_next_chunk(0); | |
10461 | CopLINE_dec(PL_curcop); | |
10462 | s = PL_bufptr; | |
5db06880 | 10463 | #ifdef PERL_MAD |
f0e67a1d | 10464 | tokenstart = PL_bufptr; |
5db06880 | 10465 | #endif |
f0e67a1d | 10466 | if (!got_some) |
378cc40b | 10467 | break; |
378cc40b | 10468 | } |
463ee0b2 | 10469 | incline(s); |
79072805 | 10470 | } |
a0d0e21e LW |
10471 | enough: |
10472 | if (SvCUR(stuff)) { | |
3280af22 | 10473 | PL_expect = XTERM; |
79072805 | 10474 | if (needargs) { |
3280af22 | 10475 | PL_lex_state = LEX_NORMAL; |
cd81e915 | 10476 | start_force(PL_curforce); |
9ded7720 | 10477 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 LW |
10478 | force_next(','); |
10479 | } | |
a0d0e21e | 10480 | else |
3280af22 | 10481 | PL_lex_state = LEX_FORMLINE; |
1bd51a4c | 10482 | if (!IN_BYTES) { |
95a20fc0 | 10483 | if (UTF && is_utf8_string((U8*)SvPVX_const(stuff), SvCUR(stuff))) |
1bd51a4c IH |
10484 | SvUTF8_on(stuff); |
10485 | else if (PL_encoding) | |
10486 | sv_recode_to_utf8(stuff, PL_encoding); | |
10487 | } | |
cd81e915 | 10488 | start_force(PL_curforce); |
9ded7720 | 10489 | NEXTVAL_NEXTTOKE.opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 10490 | force_next(THING); |
cd81e915 | 10491 | start_force(PL_curforce); |
9ded7720 | 10492 | NEXTVAL_NEXTTOKE.ival = OP_FORMLINE; |
79072805 | 10493 | force_next(LSTOP); |
378cc40b | 10494 | } |
79072805 | 10495 | else { |
8990e307 | 10496 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
10497 | if (eofmt) |
10498 | PL_lex_formbrack = 0; | |
3280af22 | 10499 | PL_bufptr = s; |
79072805 | 10500 | } |
5db06880 NC |
10501 | #ifdef PERL_MAD |
10502 | if (PL_madskills) { | |
cd81e915 NC |
10503 | if (PL_thistoken) |
10504 | sv_catpvn(PL_thistoken, tokenstart, s - tokenstart); | |
5db06880 | 10505 | else |
cd81e915 NC |
10506 | PL_thistoken = newSVpvn(tokenstart, s - tokenstart); |
10507 | PL_thiswhite = savewhite; | |
5db06880 NC |
10508 | } |
10509 | #endif | |
79072805 | 10510 | return s; |
378cc40b | 10511 | } |
a687059c | 10512 | |
ba6d6ac9 | 10513 | I32 |
864dbfa3 | 10514 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 10515 | { |
97aff369 | 10516 | dVAR; |
a3b680e6 | 10517 | const I32 oldsavestack_ix = PL_savestack_ix; |
6136c704 | 10518 | CV* const outsidecv = PL_compcv; |
8990e307 | 10519 | |
3280af22 NIS |
10520 | if (PL_compcv) { |
10521 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 10522 | } |
7766f137 | 10523 | SAVEI32(PL_subline); |
3280af22 | 10524 | save_item(PL_subname); |
3280af22 | 10525 | SAVESPTR(PL_compcv); |
3280af22 | 10526 | |
ea726b52 | 10527 | PL_compcv = MUTABLE_CV(newSV_type(is_format ? SVt_PVFM : SVt_PVCV)); |
3280af22 NIS |
10528 | CvFLAGS(PL_compcv) |= flags; |
10529 | ||
57843af0 | 10530 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 10531 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
ea726b52 | 10532 | CvOUTSIDE(PL_compcv) = MUTABLE_CV(SvREFCNT_inc_simple(outsidecv)); |
a3985cdc | 10533 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
748a9306 | 10534 | |
8990e307 LW |
10535 | return oldsavestack_ix; |
10536 | } | |
10537 | ||
084592ab CN |
10538 | #ifdef __SC__ |
10539 | #pragma segment Perl_yylex | |
10540 | #endif | |
af41e527 NC |
10541 | static int |
10542 | S_yywarn(pTHX_ const char *const s) | |
8990e307 | 10543 | { |
97aff369 | 10544 | dVAR; |
7918f24d NC |
10545 | |
10546 | PERL_ARGS_ASSERT_YYWARN; | |
10547 | ||
faef0170 | 10548 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 10549 | yyerror(s); |
faef0170 | 10550 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 10551 | return 0; |
8990e307 LW |
10552 | } |
10553 | ||
10554 | int | |
15f169a1 | 10555 | Perl_yyerror(pTHX_ const char *const s) |
463ee0b2 | 10556 | { |
97aff369 | 10557 | dVAR; |
bfed75c6 AL |
10558 | const char *where = NULL; |
10559 | const char *context = NULL; | |
68dc0745 | 10560 | int contlen = -1; |
46fc3d4c | 10561 | SV *msg; |
5912531f | 10562 | int yychar = PL_parser->yychar; |
463ee0b2 | 10563 | |
7918f24d NC |
10564 | PERL_ARGS_ASSERT_YYERROR; |
10565 | ||
3280af22 | 10566 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 10567 | where = "at EOF"; |
8bcfe651 TM |
10568 | else if (PL_oldoldbufptr && PL_bufptr > PL_oldoldbufptr && |
10569 | PL_bufptr - PL_oldoldbufptr < 200 && PL_oldoldbufptr != PL_oldbufptr && | |
10570 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
10571 | /* |
10572 | Only for NetWare: | |
10573 | The code below is removed for NetWare because it abends/crashes on NetWare | |
10574 | when the script has error such as not having the closing quotes like: | |
10575 | if ($var eq "value) | |
10576 | Checking of white spaces is anyway done in NetWare code. | |
10577 | */ | |
10578 | #ifndef NETWARE | |
3280af22 NIS |
10579 | while (isSPACE(*PL_oldoldbufptr)) |
10580 | PL_oldoldbufptr++; | |
f355267c | 10581 | #endif |
3280af22 NIS |
10582 | context = PL_oldoldbufptr; |
10583 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 10584 | } |
8bcfe651 TM |
10585 | else if (PL_oldbufptr && PL_bufptr > PL_oldbufptr && |
10586 | PL_bufptr - PL_oldbufptr < 200 && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
10587 | /* |
10588 | Only for NetWare: | |
10589 | The code below is removed for NetWare because it abends/crashes on NetWare | |
10590 | when the script has error such as not having the closing quotes like: | |
10591 | if ($var eq "value) | |
10592 | Checking of white spaces is anyway done in NetWare code. | |
10593 | */ | |
10594 | #ifndef NETWARE | |
3280af22 NIS |
10595 | while (isSPACE(*PL_oldbufptr)) |
10596 | PL_oldbufptr++; | |
f355267c | 10597 | #endif |
3280af22 NIS |
10598 | context = PL_oldbufptr; |
10599 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
10600 | } |
10601 | else if (yychar > 255) | |
68dc0745 | 10602 | where = "next token ???"; |
12fbd33b | 10603 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
10604 | if (PL_lex_state == LEX_NORMAL || |
10605 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 10606 | where = "at end of line"; |
3280af22 | 10607 | else if (PL_lex_inpat) |
68dc0745 | 10608 | where = "within pattern"; |
463ee0b2 | 10609 | else |
68dc0745 | 10610 | where = "within string"; |
463ee0b2 | 10611 | } |
46fc3d4c | 10612 | else { |
84bafc02 | 10613 | SV * const where_sv = newSVpvs_flags("next char ", SVs_TEMP); |
46fc3d4c | 10614 | if (yychar < 32) |
cea2e8a9 | 10615 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
5e7aa789 | 10616 | else if (isPRINT_LC(yychar)) { |
88c9ea1e | 10617 | const char string = yychar; |
5e7aa789 NC |
10618 | sv_catpvn(where_sv, &string, 1); |
10619 | } | |
463ee0b2 | 10620 | else |
cea2e8a9 | 10621 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
95a20fc0 | 10622 | where = SvPVX_const(where_sv); |
463ee0b2 | 10623 | } |
46fc3d4c | 10624 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 10625 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 10626 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 10627 | if (context) |
cea2e8a9 | 10628 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 10629 | else |
cea2e8a9 | 10630 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 10631 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 10632 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 10633 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 10634 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 10635 | PL_multi_end = 0; |
a0d0e21e | 10636 | } |
500960a6 | 10637 | if (PL_in_eval & EVAL_WARNONLY) { |
9b387841 | 10638 | Perl_ck_warner_d(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, SVfARG(msg)); |
500960a6 | 10639 | } |
463ee0b2 | 10640 | else |
5a844595 | 10641 | qerror(msg); |
c7d6bfb2 GS |
10642 | if (PL_error_count >= 10) { |
10643 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 10644 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
be2597df | 10645 | SVfARG(ERRSV), OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
10646 | else |
10647 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 10648 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 10649 | } |
3280af22 | 10650 | PL_in_my = 0; |
5c284bb0 | 10651 | PL_in_my_stash = NULL; |
463ee0b2 LW |
10652 | return 0; |
10653 | } | |
084592ab CN |
10654 | #ifdef __SC__ |
10655 | #pragma segment Main | |
10656 | #endif | |
4e35701f | 10657 | |
b250498f | 10658 | STATIC char* |
3ae08724 | 10659 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 10660 | { |
97aff369 | 10661 | dVAR; |
f54cb97a | 10662 | const STRLEN slen = SvCUR(PL_linestr); |
7918f24d NC |
10663 | |
10664 | PERL_ARGS_ASSERT_SWALLOW_BOM; | |
10665 | ||
7aa207d6 | 10666 | switch (s[0]) { |
4e553d73 NIS |
10667 | case 0xFF: |
10668 | if (s[1] == 0xFE) { | |
ee6ba15d | 10669 | /* UTF-16 little-endian? (or UTF-32LE?) */ |
3ae08724 | 10670 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
ee6ba15d | 10671 | Perl_croak(aTHX_ "Unsupported script encoding UTF-32LE"); |
01ec43d0 | 10672 | #ifndef PERL_NO_UTF16_FILTER |
ee6ba15d | 10673 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (BOM)\n"); |
3ae08724 | 10674 | s += 2; |
dea0fc0b | 10675 | if (PL_bufend > (char*)s) { |
81a923f4 | 10676 | s = add_utf16_textfilter(s, TRUE); |
dea0fc0b | 10677 | } |
b250498f | 10678 | #else |
ee6ba15d | 10679 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16LE"); |
b250498f | 10680 | #endif |
01ec43d0 GS |
10681 | } |
10682 | break; | |
78ae23f5 | 10683 | case 0xFE: |
7aa207d6 | 10684 | if (s[1] == 0xFF) { /* UTF-16 big-endian? */ |
01ec43d0 | 10685 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 10686 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (BOM)\n"); |
dea0fc0b JH |
10687 | s += 2; |
10688 | if (PL_bufend > (char *)s) { | |
81a923f4 | 10689 | s = add_utf16_textfilter(s, FALSE); |
dea0fc0b | 10690 | } |
b250498f | 10691 | #else |
ee6ba15d | 10692 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16BE"); |
b250498f | 10693 | #endif |
01ec43d0 GS |
10694 | } |
10695 | break; | |
3ae08724 GS |
10696 | case 0xEF: |
10697 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
7aa207d6 | 10698 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); |
01ec43d0 GS |
10699 | s += 3; /* UTF-8 */ |
10700 | } | |
10701 | break; | |
10702 | case 0: | |
7aa207d6 JH |
10703 | if (slen > 3) { |
10704 | if (s[1] == 0) { | |
10705 | if (s[2] == 0xFE && s[3] == 0xFF) { | |
10706 | /* UTF-32 big-endian */ | |
ee6ba15d | 10707 | Perl_croak(aTHX_ "Unsupported script encoding UTF-32BE"); |
7aa207d6 JH |
10708 | } |
10709 | } | |
10710 | else if (s[2] == 0 && s[3] != 0) { | |
10711 | /* Leading bytes | |
10712 | * 00 xx 00 xx | |
10713 | * are a good indicator of UTF-16BE. */ | |
ee6ba15d | 10714 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 10715 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (no BOM)\n"); |
ee6ba15d EB |
10716 | s = add_utf16_textfilter(s, FALSE); |
10717 | #else | |
10718 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16BE"); | |
10719 | #endif | |
7aa207d6 | 10720 | } |
01ec43d0 | 10721 | } |
e294cc5d JH |
10722 | #ifdef EBCDIC |
10723 | case 0xDD: | |
10724 | if (slen > 3 && s[1] == 0x73 && s[2] == 0x66 && s[3] == 0x73) { | |
10725 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); | |
10726 | s += 4; /* UTF-8 */ | |
10727 | } | |
10728 | break; | |
10729 | #endif | |
10730 | ||
7aa207d6 JH |
10731 | default: |
10732 | if (slen > 3 && s[1] == 0 && s[2] != 0 && s[3] == 0) { | |
10733 | /* Leading bytes | |
10734 | * xx 00 xx 00 | |
10735 | * are a good indicator of UTF-16LE. */ | |
ee6ba15d | 10736 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 10737 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (no BOM)\n"); |
81a923f4 | 10738 | s = add_utf16_textfilter(s, TRUE); |
ee6ba15d EB |
10739 | #else |
10740 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16LE"); | |
10741 | #endif | |
7aa207d6 | 10742 | } |
01ec43d0 | 10743 | } |
b8f84bb2 | 10744 | return (char*)s; |
b250498f | 10745 | } |
4755096e | 10746 | |
6e3aabd6 GS |
10747 | |
10748 | #ifndef PERL_NO_UTF16_FILTER | |
10749 | static I32 | |
a28af015 | 10750 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 10751 | { |
97aff369 | 10752 | dVAR; |
f3040f2c | 10753 | SV *const filter = FILTER_DATA(idx); |
2a773401 NC |
10754 | /* We re-use this each time round, throwing the contents away before we |
10755 | return. */ | |
2a773401 | 10756 | SV *const utf16_buffer = MUTABLE_SV(IoTOP_GV(filter)); |
f3040f2c | 10757 | SV *const utf8_buffer = filter; |
c28d6105 | 10758 | IV status = IoPAGE(filter); |
f2338a2e | 10759 | const bool reverse = cBOOL(IoLINES(filter)); |
d2d1d4de | 10760 | I32 retval; |
c8b0cbae | 10761 | |
c85ae797 NC |
10762 | PERL_ARGS_ASSERT_UTF16_TEXTFILTER; |
10763 | ||
c8b0cbae NC |
10764 | /* As we're automatically added, at the lowest level, and hence only called |
10765 | from this file, we can be sure that we're not called in block mode. Hence | |
10766 | don't bother writing code to deal with block mode. */ | |
10767 | if (maxlen) { | |
10768 | Perl_croak(aTHX_ "panic: utf16_textfilter called in block mode (for %d characters)", maxlen); | |
10769 | } | |
c28d6105 NC |
10770 | if (status < 0) { |
10771 | Perl_croak(aTHX_ "panic: utf16_textfilter called after error (status=%"IVdf")", status); | |
10772 | } | |
1de9afcd | 10773 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
c28d6105 | 10774 | "utf16_textfilter(%p,%ce): idx=%d maxlen=%d status=%"IVdf" utf16=%"UVuf" utf8=%"UVuf"\n", |
a28af015 | 10775 | FPTR2DPTR(void *, S_utf16_textfilter), |
c28d6105 NC |
10776 | reverse ? 'l' : 'b', idx, maxlen, status, |
10777 | (UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer))); | |
10778 | ||
10779 | while (1) { | |
10780 | STRLEN chars; | |
10781 | STRLEN have; | |
dea0fc0b | 10782 | I32 newlen; |
2a773401 | 10783 | U8 *end; |
c28d6105 NC |
10784 | /* First, look in our buffer of existing UTF-8 data: */ |
10785 | char *nl = (char *)memchr(SvPVX(utf8_buffer), '\n', SvCUR(utf8_buffer)); | |
10786 | ||
10787 | if (nl) { | |
10788 | ++nl; | |
10789 | } else if (status == 0) { | |
10790 | /* EOF */ | |
10791 | IoPAGE(filter) = 0; | |
10792 | nl = SvEND(utf8_buffer); | |
10793 | } | |
10794 | if (nl) { | |
d2d1d4de NC |
10795 | STRLEN got = nl - SvPVX(utf8_buffer); |
10796 | /* Did we have anything to append? */ | |
10797 | retval = got != 0; | |
10798 | sv_catpvn(sv, SvPVX(utf8_buffer), got); | |
c28d6105 NC |
10799 | /* Everything else in this code works just fine if SVp_POK isn't |
10800 | set. This, however, needs it, and we need it to work, else | |
10801 | we loop infinitely because the buffer is never consumed. */ | |
10802 | sv_chop(utf8_buffer, nl); | |
10803 | break; | |
10804 | } | |
ba77e4cc | 10805 | |
c28d6105 NC |
10806 | /* OK, not a complete line there, so need to read some more UTF-16. |
10807 | Read an extra octect if the buffer currently has an odd number. */ | |
ba77e4cc NC |
10808 | while (1) { |
10809 | if (status <= 0) | |
10810 | break; | |
10811 | if (SvCUR(utf16_buffer) >= 2) { | |
10812 | /* Location of the high octet of the last complete code point. | |
10813 | Gosh, UTF-16 is a pain. All the benefits of variable length, | |
10814 | *coupled* with all the benefits of partial reads and | |
10815 | endianness. */ | |
10816 | const U8 *const last_hi = (U8*)SvPVX(utf16_buffer) | |
10817 | + ((SvCUR(utf16_buffer) & ~1) - (reverse ? 1 : 2)); | |
10818 | ||
10819 | if (*last_hi < 0xd8 || *last_hi > 0xdb) { | |
10820 | break; | |
10821 | } | |
10822 | ||
10823 | /* We have the first half of a surrogate. Read more. */ | |
10824 | DEBUG_P(PerlIO_printf(Perl_debug_log, "utf16_textfilter partial surrogate detected at %p\n", last_hi)); | |
10825 | } | |
c28d6105 | 10826 | |
c28d6105 NC |
10827 | status = FILTER_READ(idx + 1, utf16_buffer, |
10828 | 160 + (SvCUR(utf16_buffer) & 1)); | |
10829 | DEBUG_P(PerlIO_printf(Perl_debug_log, "utf16_textfilter status=%"IVdf" SvCUR(sv)=%"UVuf"\n", status, (UV)SvCUR(utf16_buffer))); | |
ba77e4cc | 10830 | DEBUG_P({ sv_dump(utf16_buffer); sv_dump(utf8_buffer);}); |
c28d6105 NC |
10831 | if (status < 0) { |
10832 | /* Error */ | |
10833 | IoPAGE(filter) = status; | |
10834 | return status; | |
10835 | } | |
10836 | } | |
10837 | ||
10838 | chars = SvCUR(utf16_buffer) >> 1; | |
10839 | have = SvCUR(utf8_buffer); | |
10840 | SvGROW(utf8_buffer, have + chars * 3 + 1); | |
2a773401 | 10841 | |
aa6dbd60 | 10842 | if (reverse) { |
c28d6105 NC |
10843 | end = utf16_to_utf8_reversed((U8*)SvPVX(utf16_buffer), |
10844 | (U8*)SvPVX_const(utf8_buffer) + have, | |
10845 | chars * 2, &newlen); | |
aa6dbd60 | 10846 | } else { |
2a773401 | 10847 | end = utf16_to_utf8((U8*)SvPVX(utf16_buffer), |
c28d6105 NC |
10848 | (U8*)SvPVX_const(utf8_buffer) + have, |
10849 | chars * 2, &newlen); | |
2a773401 | 10850 | } |
c28d6105 | 10851 | SvCUR_set(utf8_buffer, have + newlen); |
2a773401 | 10852 | *end = '\0'; |
c28d6105 | 10853 | |
e07286ed NC |
10854 | /* No need to keep this SV "well-formed" with a '\0' after the end, as |
10855 | it's private to us, and utf16_to_utf8{,reversed} take a | |
10856 | (pointer,length) pair, rather than a NUL-terminated string. */ | |
10857 | if(SvCUR(utf16_buffer) & 1) { | |
10858 | *SvPVX(utf16_buffer) = SvEND(utf16_buffer)[-1]; | |
10859 | SvCUR_set(utf16_buffer, 1); | |
10860 | } else { | |
10861 | SvCUR_set(utf16_buffer, 0); | |
10862 | } | |
2a773401 | 10863 | } |
c28d6105 NC |
10864 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
10865 | "utf16_textfilter: returns, status=%"IVdf" utf16=%"UVuf" utf8=%"UVuf"\n", | |
10866 | status, | |
10867 | (UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer))); | |
10868 | DEBUG_P({ sv_dump(utf8_buffer); sv_dump(sv);}); | |
d2d1d4de | 10869 | return retval; |
6e3aabd6 | 10870 | } |
81a923f4 NC |
10871 | |
10872 | static U8 * | |
10873 | S_add_utf16_textfilter(pTHX_ U8 *const s, bool reversed) | |
10874 | { | |
2a773401 | 10875 | SV *filter = filter_add(S_utf16_textfilter, NULL); |
81a923f4 | 10876 | |
c85ae797 NC |
10877 | PERL_ARGS_ASSERT_ADD_UTF16_TEXTFILTER; |
10878 | ||
c28d6105 | 10879 | IoTOP_GV(filter) = MUTABLE_GV(newSVpvn((char *)s, PL_bufend - (char*)s)); |
f3040f2c | 10880 | sv_setpvs(filter, ""); |
2a773401 | 10881 | IoLINES(filter) = reversed; |
c28d6105 NC |
10882 | IoPAGE(filter) = 1; /* Not EOF */ |
10883 | ||
10884 | /* Sadly, we have to return a valid pointer, come what may, so we have to | |
10885 | ignore any error return from this. */ | |
10886 | SvCUR_set(PL_linestr, 0); | |
10887 | if (FILTER_READ(0, PL_linestr, 0)) { | |
10888 | SvUTF8_on(PL_linestr); | |
81a923f4 | 10889 | } else { |
c28d6105 | 10890 | SvUTF8_on(PL_linestr); |
81a923f4 | 10891 | } |
c28d6105 | 10892 | PL_bufend = SvEND(PL_linestr); |
81a923f4 NC |
10893 | return (U8*)SvPVX(PL_linestr); |
10894 | } | |
6e3aabd6 | 10895 | #endif |
9f4817db | 10896 | |
f333445c JP |
10897 | /* |
10898 | Returns a pointer to the next character after the parsed | |
10899 | vstring, as well as updating the passed in sv. | |
10900 | ||
10901 | Function must be called like | |
10902 | ||
561b68a9 | 10903 | sv = newSV(5); |
65b06e02 | 10904 | s = scan_vstring(s,e,sv); |
f333445c | 10905 | |
65b06e02 | 10906 | where s and e are the start and end of the string. |
f333445c JP |
10907 | The sv should already be large enough to store the vstring |
10908 | passed in, for performance reasons. | |
10909 | ||
10910 | */ | |
10911 | ||
10912 | char * | |
15f169a1 | 10913 | Perl_scan_vstring(pTHX_ const char *s, const char *const e, SV *sv) |
f333445c | 10914 | { |
97aff369 | 10915 | dVAR; |
bfed75c6 AL |
10916 | const char *pos = s; |
10917 | const char *start = s; | |
7918f24d NC |
10918 | |
10919 | PERL_ARGS_ASSERT_SCAN_VSTRING; | |
10920 | ||
f333445c | 10921 | if (*pos == 'v') pos++; /* get past 'v' */ |
65b06e02 | 10922 | while (pos < e && (isDIGIT(*pos) || *pos == '_')) |
3e884cbf | 10923 | pos++; |
f333445c JP |
10924 | if ( *pos != '.') { |
10925 | /* this may not be a v-string if followed by => */ | |
bfed75c6 | 10926 | const char *next = pos; |
65b06e02 | 10927 | while (next < e && isSPACE(*next)) |
8fc7bb1c | 10928 | ++next; |
65b06e02 | 10929 | if ((e - next) >= 2 && *next == '=' && next[1] == '>' ) { |
f333445c JP |
10930 | /* return string not v-string */ |
10931 | sv_setpvn(sv,(char *)s,pos-s); | |
73d840c0 | 10932 | return (char *)pos; |
f333445c JP |
10933 | } |
10934 | } | |
10935 | ||
10936 | if (!isALPHA(*pos)) { | |
89ebb4a3 | 10937 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
f333445c | 10938 | |
d4c19fe8 AL |
10939 | if (*s == 'v') |
10940 | s++; /* get past 'v' */ | |
f333445c | 10941 | |
76f68e9b | 10942 | sv_setpvs(sv, ""); |
f333445c JP |
10943 | |
10944 | for (;;) { | |
d4c19fe8 | 10945 | /* this is atoi() that tolerates underscores */ |
0bd48802 AL |
10946 | U8 *tmpend; |
10947 | UV rev = 0; | |
d4c19fe8 AL |
10948 | const char *end = pos; |
10949 | UV mult = 1; | |
10950 | while (--end >= s) { | |
10951 | if (*end != '_') { | |
10952 | const UV orev = rev; | |
f333445c JP |
10953 | rev += (*end - '0') * mult; |
10954 | mult *= 10; | |
9b387841 NC |
10955 | if (orev > rev) |
10956 | Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW), | |
10957 | "Integer overflow in decimal number"); | |
f333445c JP |
10958 | } |
10959 | } | |
10960 | #ifdef EBCDIC | |
10961 | if (rev > 0x7FFFFFFF) | |
10962 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
10963 | #endif | |
10964 | /* Append native character for the rev point */ | |
10965 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
10966 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
10967 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
10968 | SvUTF8_on(sv); | |
65b06e02 | 10969 | if (pos + 1 < e && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
10970 | s = ++pos; |
10971 | else { | |
10972 | s = pos; | |
10973 | break; | |
10974 | } | |
65b06e02 | 10975 | while (pos < e && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
10976 | pos++; |
10977 | } | |
10978 | SvPOK_on(sv); | |
10979 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
10980 | SvRMAGICAL_on(sv); | |
10981 | } | |
73d840c0 | 10982 | return (char *)s; |
f333445c JP |
10983 | } |
10984 | ||
88e1f1a2 JV |
10985 | int |
10986 | Perl_keyword_plugin_standard(pTHX_ | |
10987 | char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) | |
10988 | { | |
10989 | PERL_ARGS_ASSERT_KEYWORD_PLUGIN_STANDARD; | |
10990 | PERL_UNUSED_CONTEXT; | |
10991 | PERL_UNUSED_ARG(keyword_ptr); | |
10992 | PERL_UNUSED_ARG(keyword_len); | |
10993 | PERL_UNUSED_ARG(op_ptr); | |
10994 | return KEYWORD_PLUGIN_DECLINE; | |
10995 | } | |
10996 | ||
78cdf107 | 10997 | #define parse_recdescent(g,p) S_parse_recdescent(aTHX_ g,p) |
e53d8f76 | 10998 | static void |
78cdf107 | 10999 | S_parse_recdescent(pTHX_ int gramtype, I32 fakeeof) |
a7aaec61 Z |
11000 | { |
11001 | SAVEI32(PL_lex_brackets); | |
11002 | if (PL_lex_brackets > 100) | |
11003 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
11004 | PL_lex_brackstack[PL_lex_brackets++] = XFAKEEOF; | |
78cdf107 Z |
11005 | SAVEI32(PL_lex_allbrackets); |
11006 | PL_lex_allbrackets = 0; | |
11007 | SAVEI8(PL_lex_fakeeof); | |
2dcac756 | 11008 | PL_lex_fakeeof = (U8)fakeeof; |
a7aaec61 Z |
11009 | if(yyparse(gramtype) && !PL_parser->error_count) |
11010 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11011 | } | |
11012 | ||
78cdf107 | 11013 | #define parse_recdescent_for_op(g,p) S_parse_recdescent_for_op(aTHX_ g,p) |
e53d8f76 | 11014 | static OP * |
78cdf107 | 11015 | S_parse_recdescent_for_op(pTHX_ int gramtype, I32 fakeeof) |
e53d8f76 Z |
11016 | { |
11017 | OP *o; | |
11018 | ENTER; | |
11019 | SAVEVPTR(PL_eval_root); | |
11020 | PL_eval_root = NULL; | |
78cdf107 | 11021 | parse_recdescent(gramtype, fakeeof); |
e53d8f76 Z |
11022 | o = PL_eval_root; |
11023 | LEAVE; | |
11024 | return o; | |
11025 | } | |
11026 | ||
78cdf107 Z |
11027 | #define parse_expr(p,f) S_parse_expr(aTHX_ p,f) |
11028 | static OP * | |
11029 | S_parse_expr(pTHX_ I32 fakeeof, U32 flags) | |
11030 | { | |
11031 | OP *exprop; | |
11032 | if (flags & ~PARSE_OPTIONAL) | |
11033 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_expr"); | |
11034 | exprop = parse_recdescent_for_op(GRAMEXPR, fakeeof); | |
11035 | if (!exprop && !(flags & PARSE_OPTIONAL)) { | |
11036 | if (!PL_parser->error_count) | |
11037 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11038 | exprop = newOP(OP_NULL, 0); | |
11039 | } | |
11040 | return exprop; | |
11041 | } | |
11042 | ||
11043 | /* | |
11044 | =for apidoc Amx|OP *|parse_arithexpr|U32 flags | |
11045 | ||
11046 | Parse a Perl arithmetic expression. This may contain operators of precedence | |
11047 | down to the bit shift operators. The expression must be followed (and thus | |
11048 | terminated) either by a comparison or lower-precedence operator or by | |
11049 | something that would normally terminate an expression such as semicolon. | |
11050 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11051 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11052 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11053 | the source of the code to be parsed and the lexical context for the | |
11054 | expression. | |
11055 | ||
11056 | The op tree representing the expression is returned. If an optional | |
11057 | expression is absent, a null pointer is returned, otherwise the pointer | |
11058 | will be non-null. | |
11059 | ||
11060 | If an error occurs in parsing or compilation, in most cases a valid op | |
11061 | tree is returned anyway. The error is reflected in the parser state, | |
11062 | normally resulting in a single exception at the top level of parsing | |
11063 | which covers all the compilation errors that occurred. Some compilation | |
11064 | errors, however, will throw an exception immediately. | |
11065 | ||
11066 | =cut | |
11067 | */ | |
11068 | ||
11069 | OP * | |
11070 | Perl_parse_arithexpr(pTHX_ U32 flags) | |
11071 | { | |
11072 | return parse_expr(LEX_FAKEEOF_COMPARE, flags); | |
11073 | } | |
11074 | ||
11075 | /* | |
11076 | =for apidoc Amx|OP *|parse_termexpr|U32 flags | |
11077 | ||
11078 | Parse a Perl term expression. This may contain operators of precedence | |
11079 | down to the assignment operators. The expression must be followed (and thus | |
11080 | terminated) either by a comma or lower-precedence operator or by | |
11081 | something that would normally terminate an expression such as semicolon. | |
11082 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11083 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11084 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11085 | the source of the code to be parsed and the lexical context for the | |
11086 | expression. | |
11087 | ||
11088 | The op tree representing the expression is returned. If an optional | |
11089 | expression is absent, a null pointer is returned, otherwise the pointer | |
11090 | will be non-null. | |
11091 | ||
11092 | If an error occurs in parsing or compilation, in most cases a valid op | |
11093 | tree is returned anyway. The error is reflected in the parser state, | |
11094 | normally resulting in a single exception at the top level of parsing | |
11095 | which covers all the compilation errors that occurred. Some compilation | |
11096 | errors, however, will throw an exception immediately. | |
11097 | ||
11098 | =cut | |
11099 | */ | |
11100 | ||
11101 | OP * | |
11102 | Perl_parse_termexpr(pTHX_ U32 flags) | |
11103 | { | |
11104 | return parse_expr(LEX_FAKEEOF_COMMA, flags); | |
11105 | } | |
11106 | ||
11107 | /* | |
11108 | =for apidoc Amx|OP *|parse_listexpr|U32 flags | |
11109 | ||
11110 | Parse a Perl list expression. This may contain operators of precedence | |
11111 | down to the comma operator. The expression must be followed (and thus | |
11112 | terminated) either by a low-precedence logic operator such as C<or> or by | |
11113 | something that would normally terminate an expression such as semicolon. | |
11114 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11115 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11116 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11117 | the source of the code to be parsed and the lexical context for the | |
11118 | expression. | |
11119 | ||
11120 | The op tree representing the expression is returned. If an optional | |
11121 | expression is absent, a null pointer is returned, otherwise the pointer | |
11122 | will be non-null. | |
11123 | ||
11124 | If an error occurs in parsing or compilation, in most cases a valid op | |
11125 | tree is returned anyway. The error is reflected in the parser state, | |
11126 | normally resulting in a single exception at the top level of parsing | |
11127 | which covers all the compilation errors that occurred. Some compilation | |
11128 | errors, however, will throw an exception immediately. | |
11129 | ||
11130 | =cut | |
11131 | */ | |
11132 | ||
11133 | OP * | |
11134 | Perl_parse_listexpr(pTHX_ U32 flags) | |
11135 | { | |
11136 | return parse_expr(LEX_FAKEEOF_LOWLOGIC, flags); | |
11137 | } | |
11138 | ||
11139 | /* | |
11140 | =for apidoc Amx|OP *|parse_fullexpr|U32 flags | |
11141 | ||
11142 | Parse a single complete Perl expression. This allows the full | |
11143 | expression grammar, including the lowest-precedence operators such | |
11144 | as C<or>. The expression must be followed (and thus terminated) by a | |
11145 | token that an expression would normally be terminated by: end-of-file, | |
11146 | closing bracketing punctuation, semicolon, or one of the keywords that | |
11147 | signals a postfix expression-statement modifier. If I<flags> includes | |
11148 | C<PARSE_OPTIONAL> then the expression is optional, otherwise it is | |
11149 | mandatory. It is up to the caller to ensure that the dynamic parser | |
11150 | state (L</PL_parser> et al) is correctly set to reflect the source of | |
11151 | the code to be parsed and the lexical context for the expression. | |
11152 | ||
11153 | The op tree representing the expression is returned. If an optional | |
11154 | expression is absent, a null pointer is returned, otherwise the pointer | |
11155 | will be non-null. | |
11156 | ||
11157 | If an error occurs in parsing or compilation, in most cases a valid op | |
11158 | tree is returned anyway. The error is reflected in the parser state, | |
11159 | normally resulting in a single exception at the top level of parsing | |
11160 | which covers all the compilation errors that occurred. Some compilation | |
11161 | errors, however, will throw an exception immediately. | |
11162 | ||
11163 | =cut | |
11164 | */ | |
11165 | ||
11166 | OP * | |
11167 | Perl_parse_fullexpr(pTHX_ U32 flags) | |
11168 | { | |
11169 | return parse_expr(LEX_FAKEEOF_NONEXPR, flags); | |
11170 | } | |
11171 | ||
e53d8f76 Z |
11172 | /* |
11173 | =for apidoc Amx|OP *|parse_block|U32 flags | |
11174 | ||
11175 | Parse a single complete Perl code block. This consists of an opening | |
11176 | brace, a sequence of statements, and a closing brace. The block | |
11177 | constitutes a lexical scope, so C<my> variables and various compile-time | |
11178 | effects can be contained within it. It is up to the caller to ensure | |
11179 | that the dynamic parser state (L</PL_parser> et al) is correctly set to | |
11180 | reflect the source of the code to be parsed and the lexical context for | |
11181 | the statement. | |
11182 | ||
11183 | The op tree representing the code block is returned. This is always a | |
11184 | real op, never a null pointer. It will normally be a C<lineseq> list, | |
11185 | including C<nextstate> or equivalent ops. No ops to construct any kind | |
11186 | of runtime scope are included by virtue of it being a block. | |
11187 | ||
11188 | If an error occurs in parsing or compilation, in most cases a valid op | |
11189 | tree (most likely null) is returned anyway. The error is reflected in | |
11190 | the parser state, normally resulting in a single exception at the top | |
11191 | level of parsing which covers all the compilation errors that occurred. | |
11192 | Some compilation errors, however, will throw an exception immediately. | |
11193 | ||
11194 | The I<flags> parameter is reserved for future use, and must always | |
11195 | be zero. | |
11196 | ||
11197 | =cut | |
11198 | */ | |
11199 | ||
11200 | OP * | |
11201 | Perl_parse_block(pTHX_ U32 flags) | |
11202 | { | |
11203 | if (flags) | |
11204 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_block"); | |
78cdf107 | 11205 | return parse_recdescent_for_op(GRAMBLOCK, LEX_FAKEEOF_NEVER); |
e53d8f76 Z |
11206 | } |
11207 | ||
1da4ca5f | 11208 | /* |
8359b381 Z |
11209 | =for apidoc Amx|OP *|parse_barestmt|U32 flags |
11210 | ||
11211 | Parse a single unadorned Perl statement. This may be a normal imperative | |
11212 | statement or a declaration that has compile-time effect. It does not | |
11213 | include any label or other affixture. It is up to the caller to ensure | |
11214 | that the dynamic parser state (L</PL_parser> et al) is correctly set to | |
11215 | reflect the source of the code to be parsed and the lexical context for | |
11216 | the statement. | |
11217 | ||
11218 | The op tree representing the statement is returned. This may be a | |
11219 | null pointer if the statement is null, for example if it was actually | |
11220 | a subroutine definition (which has compile-time side effects). If not | |
11221 | null, it will be ops directly implementing the statement, suitable to | |
11222 | pass to L</newSTATEOP>. It will not normally include a C<nextstate> or | |
11223 | equivalent op (except for those embedded in a scope contained entirely | |
11224 | within the statement). | |
11225 | ||
11226 | If an error occurs in parsing or compilation, in most cases a valid op | |
11227 | tree (most likely null) is returned anyway. The error is reflected in | |
11228 | the parser state, normally resulting in a single exception at the top | |
11229 | level of parsing which covers all the compilation errors that occurred. | |
11230 | Some compilation errors, however, will throw an exception immediately. | |
11231 | ||
11232 | The I<flags> parameter is reserved for future use, and must always | |
11233 | be zero. | |
11234 | ||
11235 | =cut | |
11236 | */ | |
11237 | ||
11238 | OP * | |
11239 | Perl_parse_barestmt(pTHX_ U32 flags) | |
11240 | { | |
11241 | if (flags) | |
11242 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_barestmt"); | |
78cdf107 | 11243 | return parse_recdescent_for_op(GRAMBARESTMT, LEX_FAKEEOF_NEVER); |
8359b381 Z |
11244 | } |
11245 | ||
11246 | /* | |
361d9b55 Z |
11247 | =for apidoc Amx|SV *|parse_label|U32 flags |
11248 | ||
11249 | Parse a single label, possibly optional, of the type that may prefix a | |
11250 | Perl statement. It is up to the caller to ensure that the dynamic parser | |
11251 | state (L</PL_parser> et al) is correctly set to reflect the source of | |
11252 | the code to be parsed. If I<flags> includes C<PARSE_OPTIONAL> then the | |
11253 | label is optional, otherwise it is mandatory. | |
11254 | ||
11255 | The name of the label is returned in the form of a fresh scalar. If an | |
11256 | optional label is absent, a null pointer is returned. | |
11257 | ||
11258 | If an error occurs in parsing, which can only occur if the label is | |
11259 | mandatory, a valid label is returned anyway. The error is reflected in | |
11260 | the parser state, normally resulting in a single exception at the top | |
11261 | level of parsing which covers all the compilation errors that occurred. | |
11262 | ||
11263 | =cut | |
11264 | */ | |
11265 | ||
11266 | SV * | |
11267 | Perl_parse_label(pTHX_ U32 flags) | |
11268 | { | |
11269 | if (flags & ~PARSE_OPTIONAL) | |
11270 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_label"); | |
11271 | if (PL_lex_state == LEX_KNOWNEXT) { | |
11272 | PL_parser->yychar = yylex(); | |
11273 | if (PL_parser->yychar == LABEL) { | |
11274 | char *lpv = pl_yylval.pval; | |
11275 | STRLEN llen = strlen(lpv); | |
11276 | SV *lsv; | |
11277 | PL_parser->yychar = YYEMPTY; | |
11278 | lsv = newSV_type(SVt_PV); | |
11279 | SvPV_set(lsv, lpv); | |
11280 | SvCUR_set(lsv, llen); | |
11281 | SvLEN_set(lsv, llen+1); | |
11282 | SvPOK_on(lsv); | |
11283 | return lsv; | |
11284 | } else { | |
11285 | yyunlex(); | |
11286 | goto no_label; | |
11287 | } | |
11288 | } else { | |
11289 | char *s, *t; | |
11290 | U8 c; | |
11291 | STRLEN wlen, bufptr_pos; | |
11292 | lex_read_space(0); | |
11293 | t = s = PL_bufptr; | |
11294 | c = (U8)*s; | |
11295 | if (!isIDFIRST_A(c)) | |
11296 | goto no_label; | |
11297 | do { | |
11298 | c = (U8)*++t; | |
11299 | } while(isWORDCHAR_A(c)); | |
11300 | wlen = t - s; | |
11301 | if (word_takes_any_delimeter(s, wlen)) | |
11302 | goto no_label; | |
11303 | bufptr_pos = s - SvPVX(PL_linestr); | |
11304 | PL_bufptr = t; | |
11305 | lex_read_space(LEX_KEEP_PREVIOUS); | |
11306 | t = PL_bufptr; | |
11307 | s = SvPVX(PL_linestr) + bufptr_pos; | |
11308 | if (t[0] == ':' && t[1] != ':') { | |
11309 | PL_oldoldbufptr = PL_oldbufptr; | |
11310 | PL_oldbufptr = s; | |
11311 | PL_bufptr = t+1; | |
11312 | return newSVpvn(s, wlen); | |
11313 | } else { | |
11314 | PL_bufptr = s; | |
11315 | no_label: | |
11316 | if (flags & PARSE_OPTIONAL) { | |
11317 | return NULL; | |
11318 | } else { | |
11319 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11320 | return newSVpvs("x"); | |
11321 | } | |
11322 | } | |
11323 | } | |
11324 | } | |
11325 | ||
11326 | /* | |
28ac2b49 Z |
11327 | =for apidoc Amx|OP *|parse_fullstmt|U32 flags |
11328 | ||
11329 | Parse a single complete Perl statement. This may be a normal imperative | |
8359b381 | 11330 | statement or a declaration that has compile-time effect, and may include |
8e720305 | 11331 | optional labels. It is up to the caller to ensure that the dynamic |
28ac2b49 Z |
11332 | parser state (L</PL_parser> et al) is correctly set to reflect the source |
11333 | of the code to be parsed and the lexical context for the statement. | |
11334 | ||
11335 | The op tree representing the statement is returned. This may be a | |
11336 | null pointer if the statement is null, for example if it was actually | |
11337 | a subroutine definition (which has compile-time side effects). If not | |
11338 | null, it will be the result of a L</newSTATEOP> call, normally including | |
11339 | a C<nextstate> or equivalent op. | |
11340 | ||
11341 | If an error occurs in parsing or compilation, in most cases a valid op | |
11342 | tree (most likely null) is returned anyway. The error is reflected in | |
11343 | the parser state, normally resulting in a single exception at the top | |
11344 | level of parsing which covers all the compilation errors that occurred. | |
11345 | Some compilation errors, however, will throw an exception immediately. | |
11346 | ||
11347 | The I<flags> parameter is reserved for future use, and must always | |
11348 | be zero. | |
11349 | ||
11350 | =cut | |
11351 | */ | |
11352 | ||
11353 | OP * | |
11354 | Perl_parse_fullstmt(pTHX_ U32 flags) | |
11355 | { | |
28ac2b49 Z |
11356 | if (flags) |
11357 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_fullstmt"); | |
78cdf107 | 11358 | return parse_recdescent_for_op(GRAMFULLSTMT, LEX_FAKEEOF_NEVER); |
28ac2b49 Z |
11359 | } |
11360 | ||
07ffcb73 Z |
11361 | /* |
11362 | =for apidoc Amx|OP *|parse_stmtseq|U32 flags | |
11363 | ||
11364 | Parse a sequence of zero or more Perl statements. These may be normal | |
11365 | imperative statements, including optional labels, or declarations | |
11366 | that have compile-time effect, or any mixture thereof. The statement | |
11367 | sequence ends when a closing brace or end-of-file is encountered in a | |
11368 | place where a new statement could have validly started. It is up to | |
11369 | the caller to ensure that the dynamic parser state (L</PL_parser> et al) | |
11370 | is correctly set to reflect the source of the code to be parsed and the | |
11371 | lexical context for the statements. | |
11372 | ||
11373 | The op tree representing the statement sequence is returned. This may | |
11374 | be a null pointer if the statements were all null, for example if there | |
11375 | were no statements or if there were only subroutine definitions (which | |
11376 | have compile-time side effects). If not null, it will be a C<lineseq> | |
11377 | list, normally including C<nextstate> or equivalent ops. | |
11378 | ||
11379 | If an error occurs in parsing or compilation, in most cases a valid op | |
11380 | tree is returned anyway. The error is reflected in the parser state, | |
11381 | normally resulting in a single exception at the top level of parsing | |
11382 | which covers all the compilation errors that occurred. Some compilation | |
11383 | errors, however, will throw an exception immediately. | |
11384 | ||
11385 | The I<flags> parameter is reserved for future use, and must always | |
11386 | be zero. | |
11387 | ||
11388 | =cut | |
11389 | */ | |
11390 | ||
11391 | OP * | |
11392 | Perl_parse_stmtseq(pTHX_ U32 flags) | |
11393 | { | |
11394 | OP *stmtseqop; | |
e53d8f76 | 11395 | I32 c; |
07ffcb73 | 11396 | if (flags) |
78cdf107 Z |
11397 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_stmtseq"); |
11398 | stmtseqop = parse_recdescent_for_op(GRAMSTMTSEQ, LEX_FAKEEOF_CLOSING); | |
e53d8f76 Z |
11399 | c = lex_peek_unichar(0); |
11400 | if (c != -1 && c != /*{*/'}') | |
07ffcb73 | 11401 | qerror(Perl_mess(aTHX_ "Parse error")); |
07ffcb73 Z |
11402 | return stmtseqop; |
11403 | } | |
11404 | ||
ea25a9b2 | 11405 | void |
f7e3d326 | 11406 | Perl_munge_qwlist_to_paren_list(pTHX_ OP *qwlist) |
ea25a9b2 | 11407 | { |
f7e3d326 | 11408 | PERL_ARGS_ASSERT_MUNGE_QWLIST_TO_PAREN_LIST; |
ea25a9b2 | 11409 | deprecate("qw(...) as parentheses"); |
78cdf107 | 11410 | force_next((4<<24)|')'); |
ea25a9b2 Z |
11411 | if (qwlist->op_type == OP_STUB) { |
11412 | op_free(qwlist); | |
11413 | } | |
11414 | else { | |
3d8e05a0 | 11415 | start_force(PL_curforce); |
ea25a9b2 Z |
11416 | NEXTVAL_NEXTTOKE.opval = qwlist; |
11417 | force_next(THING); | |
11418 | } | |
78cdf107 | 11419 | force_next((2<<24)|'('); |
ea25a9b2 Z |
11420 | } |
11421 | ||
28ac2b49 | 11422 | /* |
1da4ca5f NC |
11423 | * Local variables: |
11424 | * c-indentation-style: bsd | |
11425 | * c-basic-offset: 4 | |
11426 | * indent-tabs-mode: t | |
11427 | * End: | |
11428 | * | |
37442d52 RGS |
11429 | * ex: set ts=8 sts=4 sw=4 noet: |
11430 | */ |