Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
bc89e66f | 3 | * Copyright (c) 1991-2001, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
9cbb5ea2 GS |
14 | /* |
15 | * This file is the lexer for Perl. It's closely linked to the | |
4e553d73 | 16 | * parser, perly.y. |
ffb4593c NT |
17 | * |
18 | * The main routine is yylex(), which returns the next token. | |
19 | */ | |
20 | ||
378cc40b | 21 | #include "EXTERN.h" |
864dbfa3 | 22 | #define PERL_IN_TOKE_C |
378cc40b | 23 | #include "perl.h" |
378cc40b | 24 | |
d3b6f988 GS |
25 | #define yychar PL_yychar |
26 | #define yylval PL_yylval | |
27 | ||
fc36a67e | 28 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 29 | |
acfe0abc | 30 | static void restore_rsfp(pTHX_ void *f); |
6e3aabd6 | 31 | #ifndef PERL_NO_UTF16_FILTER |
acfe0abc GS |
32 | static I32 utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen); |
33 | static I32 utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen); | |
6e3aabd6 | 34 | #endif |
51371543 | 35 | |
9059aa12 LW |
36 | #define XFAKEBRACK 128 |
37 | #define XENUMMASK 127 | |
38 | ||
39e02b42 JH |
39 | #ifdef USE_UTF8_SCRIPTS |
40 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 41 | #else |
39e02b42 JH |
42 | # ifdef EBCDIC /* For now 'use utf8' does not affect tokenizer on EBCDIC */ |
43 | # define UTF (PL_linestr && DO_UTF8(PL_linestr)) | |
44 | # else | |
45 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8)) | |
46 | # endif | |
2b9d42f0 | 47 | #endif |
a0ed51b3 | 48 | |
61f0cdd9 | 49 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
50 | * 1999-02-27 mjd-perl-patch@plover.com */ |
51 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
52 | ||
bf4acbe4 GS |
53 | /* On MacOS, respect nonbreaking spaces */ |
54 | #ifdef MACOS_TRADITIONAL | |
55 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\312'||(c)=='\t') | |
56 | #else | |
57 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') | |
58 | #endif | |
59 | ||
ffb4593c NT |
60 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
61 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
62 | * can get by with a single comparison (if the compiler is smart enough). |
63 | */ | |
64 | ||
fb73857a | 65 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
66 | ||
55497cff | 67 | #define LEX_NORMAL 10 |
68 | #define LEX_INTERPNORMAL 9 | |
69 | #define LEX_INTERPCASEMOD 8 | |
70 | #define LEX_INTERPPUSH 7 | |
71 | #define LEX_INTERPSTART 6 | |
72 | #define LEX_INTERPEND 5 | |
73 | #define LEX_INTERPENDMAYBE 4 | |
74 | #define LEX_INTERPCONCAT 3 | |
75 | #define LEX_INTERPCONST 2 | |
76 | #define LEX_FORMLINE 1 | |
77 | #define LEX_KNOWNEXT 0 | |
79072805 | 78 | |
79072805 LW |
79 | #ifdef ff_next |
80 | #undef ff_next | |
d48672a2 LW |
81 | #endif |
82 | ||
a1a0e61e | 83 | #ifdef USE_PURE_BISON |
dba4d153 JH |
84 | # ifndef YYMAXLEVEL |
85 | # define YYMAXLEVEL 100 | |
86 | # endif | |
20141f0e IRC |
87 | YYSTYPE* yylval_pointer[YYMAXLEVEL]; |
88 | int* yychar_pointer[YYMAXLEVEL]; | |
6f202aea | 89 | int yyactlevel = -1; |
22c35a8c GS |
90 | # undef yylval |
91 | # undef yychar | |
20141f0e IRC |
92 | # define yylval (*yylval_pointer[yyactlevel]) |
93 | # define yychar (*yychar_pointer[yyactlevel]) | |
94 | # define PERL_YYLEX_PARAM yylval_pointer[yyactlevel],yychar_pointer[yyactlevel] | |
4e553d73 | 95 | # undef yylex |
dba4d153 | 96 | # define yylex() Perl_yylex_r(aTHX_ yylval_pointer[yyactlevel],yychar_pointer[yyactlevel]) |
a1a0e61e TD |
97 | #endif |
98 | ||
79072805 | 99 | #include "keywords.h" |
fe14fcc3 | 100 | |
ffb4593c NT |
101 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
102 | ||
ae986130 LW |
103 | #ifdef CLINE |
104 | #undef CLINE | |
105 | #endif | |
57843af0 | 106 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 107 | |
ffb4593c NT |
108 | /* |
109 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 110 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
111 | * |
112 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
113 | * OPERATOR : generic operator | |
114 | * AOPERATOR : assignment operator | |
115 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
116 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
117 | * PREREF : *EXPR where EXPR is not a simple identifier | |
118 | * TERM : expression term | |
119 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
120 | * FTST : file test operator | |
121 | * FUN0 : zero-argument function | |
2d2e263d | 122 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
123 | * BOop : bitwise or or xor |
124 | * BAop : bitwise and | |
125 | * SHop : shift operator | |
126 | * PWop : power operator | |
9cbb5ea2 | 127 | * PMop : pattern-matching operator |
ffb4593c NT |
128 | * Aop : addition-level operator |
129 | * Mop : multiplication-level operator | |
130 | * Eop : equality-testing operator | |
e5edeb50 | 131 | * Rop : relational operator <= != gt |
ffb4593c NT |
132 | * |
133 | * Also see LOP and lop() below. | |
134 | */ | |
135 | ||
075953c3 JH |
136 | /* Note that REPORT() and REPORT2() will be expressions that supply |
137 | * their own trailing comma, not suitable for statements as such. */ | |
998054bd | 138 | #ifdef DEBUGGING /* Serve -DT. */ |
075953c3 JH |
139 | # define REPORT(x,retval) tokereport(x,s,(int)retval), |
140 | # define REPORT2(x,retval) tokereport(x,s, yylval.ival), | |
998054bd | 141 | #else |
075953c3 JH |
142 | # define REPORT(x,retval) |
143 | # define REPORT2(x,retval) | |
998054bd SC |
144 | #endif |
145 | ||
075953c3 JH |
146 | #define TOKEN(retval) return (REPORT2("token",retval) PL_bufptr = s,(int)retval) |
147 | #define OPERATOR(retval) return (REPORT2("operator",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval) | |
148 | #define AOPERATOR(retval) return ao((REPORT2("aop",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval)) | |
149 | #define PREBLOCK(retval) return (REPORT2("preblock",retval) PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
150 | #define PRETERMBLOCK(retval) return (REPORT2("pretermblock",retval) PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
151 | #define PREREF(retval) return (REPORT2("preref",retval) PL_expect = XREF,PL_bufptr = s,(int)retval) | |
152 | #define TERM(retval) return (CLINE, REPORT2("term",retval) PL_expect = XOPERATOR, PL_bufptr = s,(int)retval) | |
153 | #define LOOPX(f) return(yylval.ival=f, REPORT("loopx",f) PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
154 | #define FTST(f) return(yylval.ival=f, REPORT("ftst",f) PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
155 | #define FUN0(f) return(yylval.ival = f, REPORT("fun0",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
156 | #define FUN1(f) return(yylval.ival = f, REPORT("fun1",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
157 | #define BOop(f) return ao((yylval.ival=f, REPORT("bitorop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
158 | #define BAop(f) return ao((yylval.ival=f, REPORT("bitandop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
159 | #define SHop(f) return ao((yylval.ival=f, REPORT("shiftop",f) PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
160 | #define PWop(f) return ao((yylval.ival=f, REPORT("powop",f) PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
161 | #define PMop(f) return(yylval.ival=f, REPORT("matchop",f) PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
162 | #define Aop(f) return ao((yylval.ival=f, REPORT("add",f) PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
163 | #define Mop(f) return ao((yylval.ival=f, REPORT("mul",f) PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
164 | #define Eop(f) return(yylval.ival=f, REPORT("eq",f) PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
165 | #define Rop(f) return(yylval.ival=f, REPORT("rel",f) PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 166 | |
a687059c LW |
167 | /* This bit of chicanery makes a unary function followed by |
168 | * a parenthesis into a function with one argument, highest precedence. | |
169 | */ | |
2f3197b3 | 170 | #define UNI(f) return(yylval.ival = f, \ |
075953c3 | 171 | REPORT("uni",f) \ |
3280af22 NIS |
172 | PL_expect = XTERM, \ |
173 | PL_bufptr = s, \ | |
174 | PL_last_uni = PL_oldbufptr, \ | |
175 | PL_last_lop_op = f, \ | |
a687059c LW |
176 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
177 | ||
79072805 | 178 | #define UNIBRACK(f) return(yylval.ival = f, \ |
075953c3 | 179 | REPORT("uni",f) \ |
3280af22 NIS |
180 | PL_bufptr = s, \ |
181 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
182 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
183 | ||
9f68db38 | 184 | /* grandfather return to old style */ |
3280af22 | 185 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 186 | |
8fa7f367 JH |
187 | #ifdef DEBUGGING |
188 | ||
2d00ba3b | 189 | STATIC void |
61b2116b | 190 | S_tokereport(pTHX_ char *thing, char* s, I32 rv) |
9041c2e3 | 191 | { |
998054bd | 192 | DEBUG_T({ |
9c5ffd7c | 193 | SV* report = newSVpv(thing, 0); |
29b291f7 RB |
194 | Perl_sv_catpvf(aTHX_ report, ":line %d:%"IVdf":", CopLINE(PL_curcop), |
195 | (IV)rv); | |
998054bd SC |
196 | |
197 | if (s - PL_bufptr > 0) | |
198 | sv_catpvn(report, PL_bufptr, s - PL_bufptr); | |
199 | else { | |
200 | if (PL_oldbufptr && *PL_oldbufptr) | |
201 | sv_catpv(report, PL_tokenbuf); | |
202 | } | |
203 | PerlIO_printf(Perl_debug_log, "### %s\n", SvPV_nolen(report)); | |
5f80b19c | 204 | }); |
998054bd SC |
205 | } |
206 | ||
8fa7f367 JH |
207 | #endif |
208 | ||
ffb4593c NT |
209 | /* |
210 | * S_ao | |
211 | * | |
212 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
213 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
214 | */ | |
215 | ||
76e3520e | 216 | STATIC int |
cea2e8a9 | 217 | S_ao(pTHX_ int toketype) |
a0d0e21e | 218 | { |
3280af22 NIS |
219 | if (*PL_bufptr == '=') { |
220 | PL_bufptr++; | |
a0d0e21e LW |
221 | if (toketype == ANDAND) |
222 | yylval.ival = OP_ANDASSIGN; | |
223 | else if (toketype == OROR) | |
224 | yylval.ival = OP_ORASSIGN; | |
225 | toketype = ASSIGNOP; | |
226 | } | |
227 | return toketype; | |
228 | } | |
229 | ||
ffb4593c NT |
230 | /* |
231 | * S_no_op | |
232 | * When Perl expects an operator and finds something else, no_op | |
233 | * prints the warning. It always prints "<something> found where | |
234 | * operator expected. It prints "Missing semicolon on previous line?" | |
235 | * if the surprise occurs at the start of the line. "do you need to | |
236 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
237 | * where the compiler doesn't know if foo is a method call or a function. | |
238 | * It prints "Missing operator before end of line" if there's nothing | |
239 | * after the missing operator, or "... before <...>" if there is something | |
240 | * after the missing operator. | |
241 | */ | |
242 | ||
76e3520e | 243 | STATIC void |
cea2e8a9 | 244 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 245 | { |
3280af22 NIS |
246 | char *oldbp = PL_bufptr; |
247 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 248 | |
1189a94a GS |
249 | if (!s) |
250 | s = oldbp; | |
07c798fb | 251 | else |
1189a94a | 252 | PL_bufptr = s; |
cea2e8a9 | 253 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 254 | if (is_first) |
cea2e8a9 | 255 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 256 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 257 | char *t; |
7e2040f0 | 258 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 259 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 260 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 261 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 | 262 | } |
07c798fb HS |
263 | else { |
264 | assert(s >= oldbp); | |
cea2e8a9 | 265 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
07c798fb | 266 | } |
3280af22 | 267 | PL_bufptr = oldbp; |
8990e307 LW |
268 | } |
269 | ||
ffb4593c NT |
270 | /* |
271 | * S_missingterm | |
272 | * Complain about missing quote/regexp/heredoc terminator. | |
273 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
274 | * If we're in a delimited string and the delimiter is a control | |
275 | * character, it's reformatted into a two-char sequence like ^C. | |
276 | * This is fatal. | |
277 | */ | |
278 | ||
76e3520e | 279 | STATIC void |
cea2e8a9 | 280 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
281 | { |
282 | char tmpbuf[3]; | |
283 | char q; | |
284 | if (s) { | |
285 | char *nl = strrchr(s,'\n'); | |
d2719217 | 286 | if (nl) |
8990e307 LW |
287 | *nl = '\0'; |
288 | } | |
9d116dd7 JH |
289 | else if ( |
290 | #ifdef EBCDIC | |
291 | iscntrl(PL_multi_close) | |
292 | #else | |
293 | PL_multi_close < 32 || PL_multi_close == 127 | |
294 | #endif | |
295 | ) { | |
8990e307 | 296 | *tmpbuf = '^'; |
3280af22 | 297 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
298 | s = "\\n"; |
299 | tmpbuf[2] = '\0'; | |
300 | s = tmpbuf; | |
301 | } | |
302 | else { | |
3280af22 | 303 | *tmpbuf = PL_multi_close; |
8990e307 LW |
304 | tmpbuf[1] = '\0'; |
305 | s = tmpbuf; | |
306 | } | |
307 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 308 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 309 | } |
79072805 | 310 | |
ffb4593c NT |
311 | /* |
312 | * Perl_deprecate | |
ffb4593c NT |
313 | */ |
314 | ||
79072805 | 315 | void |
864dbfa3 | 316 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 317 | { |
599cee73 | 318 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 319 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
320 | } |
321 | ||
ffb4593c NT |
322 | /* |
323 | * depcom | |
9cbb5ea2 | 324 | * Deprecate a comma-less variable list. |
ffb4593c NT |
325 | */ |
326 | ||
76e3520e | 327 | STATIC void |
cea2e8a9 | 328 | S_depcom(pTHX) |
a0d0e21e LW |
329 | { |
330 | deprecate("comma-less variable list"); | |
331 | } | |
332 | ||
ffb4593c | 333 | /* |
9cbb5ea2 GS |
334 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
335 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
336 | */ |
337 | ||
c39cd008 GS |
338 | #ifdef PERL_CR_FILTER |
339 | static void | |
340 | strip_return(SV *sv) | |
341 | { | |
342 | register char *s = SvPVX(sv); | |
343 | register char *e = s + SvCUR(sv); | |
344 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
345 | while (s < e) { | |
346 | if (*s++ == '\r' && *s == '\n') { | |
347 | /* hit a CR-LF, need to copy the rest */ | |
348 | register char *d = s - 1; | |
349 | *d++ = *s++; | |
350 | while (s < e) { | |
351 | if (*s == '\r' && s[1] == '\n') | |
352 | s++; | |
353 | *d++ = *s++; | |
354 | } | |
355 | SvCUR(sv) -= s - d; | |
356 | return; | |
357 | } | |
358 | } | |
359 | } | |
a868473f | 360 | |
76e3520e | 361 | STATIC I32 |
c39cd008 | 362 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 363 | { |
c39cd008 GS |
364 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
365 | if (count > 0 && !maxlen) | |
366 | strip_return(sv); | |
367 | return count; | |
a868473f NIS |
368 | } |
369 | #endif | |
370 | ||
ffb4593c NT |
371 | /* |
372 | * Perl_lex_start | |
9cbb5ea2 GS |
373 | * Initialize variables. Uses the Perl save_stack to save its state (for |
374 | * recursive calls to the parser). | |
ffb4593c NT |
375 | */ |
376 | ||
a0d0e21e | 377 | void |
864dbfa3 | 378 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 379 | { |
8990e307 LW |
380 | char *s; |
381 | STRLEN len; | |
382 | ||
3280af22 NIS |
383 | SAVEI32(PL_lex_dojoin); |
384 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
385 | SAVEI32(PL_lex_casemods); |
386 | SAVEI32(PL_lex_starts); | |
387 | SAVEI32(PL_lex_state); | |
7766f137 | 388 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 389 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
390 | if (PL_lex_state == LEX_KNOWNEXT) { |
391 | I32 toke = PL_nexttoke; | |
392 | while (--toke >= 0) { | |
393 | SAVEI32(PL_nexttype[toke]); | |
394 | SAVEVPTR(PL_nextval[toke]); | |
395 | } | |
396 | SAVEI32(PL_nexttoke); | |
18b09519 | 397 | } |
57843af0 | 398 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
399 | SAVEPPTR(PL_bufptr); |
400 | SAVEPPTR(PL_bufend); | |
401 | SAVEPPTR(PL_oldbufptr); | |
402 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
403 | SAVEPPTR(PL_last_lop); |
404 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
405 | SAVEPPTR(PL_linestart); |
406 | SAVESPTR(PL_linestr); | |
407 | SAVEPPTR(PL_lex_brackstack); | |
408 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 409 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
410 | SAVESPTR(PL_lex_stuff); |
411 | SAVEI32(PL_lex_defer); | |
09bef843 | 412 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 413 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
414 | SAVEINT(PL_expect); |
415 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
416 | |
417 | PL_lex_state = LEX_NORMAL; | |
418 | PL_lex_defer = 0; | |
419 | PL_expect = XSTATE; | |
420 | PL_lex_brackets = 0; | |
3280af22 NIS |
421 | New(899, PL_lex_brackstack, 120, char); |
422 | New(899, PL_lex_casestack, 12, char); | |
423 | SAVEFREEPV(PL_lex_brackstack); | |
424 | SAVEFREEPV(PL_lex_casestack); | |
425 | PL_lex_casemods = 0; | |
426 | *PL_lex_casestack = '\0'; | |
427 | PL_lex_dojoin = 0; | |
428 | PL_lex_starts = 0; | |
429 | PL_lex_stuff = Nullsv; | |
430 | PL_lex_repl = Nullsv; | |
431 | PL_lex_inpat = 0; | |
76be56bc | 432 | PL_nexttoke = 0; |
3280af22 | 433 | PL_lex_inwhat = 0; |
09bef843 | 434 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
435 | PL_linestr = line; |
436 | if (SvREADONLY(PL_linestr)) | |
437 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
438 | s = SvPV(PL_linestr, len); | |
8990e307 | 439 | if (len && s[len-1] != ';') { |
3280af22 NIS |
440 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
441 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
442 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 443 | } |
3280af22 NIS |
444 | SvTEMP_off(PL_linestr); |
445 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
446 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 447 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 448 | PL_rsfp = 0; |
79072805 | 449 | } |
a687059c | 450 | |
ffb4593c NT |
451 | /* |
452 | * Perl_lex_end | |
9cbb5ea2 GS |
453 | * Finalizer for lexing operations. Must be called when the parser is |
454 | * done with the lexer. | |
ffb4593c NT |
455 | */ |
456 | ||
463ee0b2 | 457 | void |
864dbfa3 | 458 | Perl_lex_end(pTHX) |
463ee0b2 | 459 | { |
3280af22 | 460 | PL_doextract = FALSE; |
463ee0b2 LW |
461 | } |
462 | ||
ffb4593c NT |
463 | /* |
464 | * S_incline | |
465 | * This subroutine has nothing to do with tilting, whether at windmills | |
466 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 467 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 468 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
469 | * # line 500 "foo.pm" |
470 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
471 | */ |
472 | ||
76e3520e | 473 | STATIC void |
cea2e8a9 | 474 | S_incline(pTHX_ char *s) |
463ee0b2 LW |
475 | { |
476 | char *t; | |
477 | char *n; | |
73659bf1 | 478 | char *e; |
463ee0b2 | 479 | char ch; |
463ee0b2 | 480 | |
57843af0 | 481 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
482 | if (*s++ != '#') |
483 | return; | |
bf4acbe4 | 484 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
485 | if (strnEQ(s, "line", 4)) |
486 | s += 4; | |
487 | else | |
488 | return; | |
084592ab | 489 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 490 | s++; |
4e553d73 | 491 | else |
73659bf1 | 492 | return; |
bf4acbe4 | 493 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
494 | if (!isDIGIT(*s)) |
495 | return; | |
496 | n = s; | |
497 | while (isDIGIT(*s)) | |
498 | s++; | |
bf4acbe4 | 499 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 500 | s++; |
73659bf1 | 501 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 502 | s++; |
73659bf1 GS |
503 | e = t + 1; |
504 | } | |
463ee0b2 | 505 | else { |
463ee0b2 | 506 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 507 | e = t; |
463ee0b2 | 508 | } |
bf4acbe4 | 509 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
510 | e++; |
511 | if (*e != '\n' && *e != '\0') | |
512 | return; /* false alarm */ | |
513 | ||
463ee0b2 LW |
514 | ch = *t; |
515 | *t = '\0'; | |
f4dd75d9 GS |
516 | if (t - s > 0) { |
517 | #ifdef USE_ITHREADS | |
518 | Safefree(CopFILE(PL_curcop)); | |
519 | #else | |
520 | SvREFCNT_dec(CopFILEGV(PL_curcop)); | |
521 | #endif | |
57843af0 | 522 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 523 | } |
463ee0b2 | 524 | *t = ch; |
57843af0 | 525 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
526 | } |
527 | ||
ffb4593c NT |
528 | /* |
529 | * S_skipspace | |
530 | * Called to gobble the appropriate amount and type of whitespace. | |
531 | * Skips comments as well. | |
532 | */ | |
533 | ||
76e3520e | 534 | STATIC char * |
cea2e8a9 | 535 | S_skipspace(pTHX_ register char *s) |
a687059c | 536 | { |
3280af22 | 537 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 538 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
539 | s++; |
540 | return s; | |
541 | } | |
542 | for (;;) { | |
fd049845 | 543 | STRLEN prevlen; |
09bef843 | 544 | SSize_t oldprevlen, oldoldprevlen; |
9c5ffd7c | 545 | SSize_t oldloplen = 0, oldunilen = 0; |
60e6418e GS |
546 | while (s < PL_bufend && isSPACE(*s)) { |
547 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
548 | incline(s); | |
549 | } | |
ffb4593c NT |
550 | |
551 | /* comment */ | |
3280af22 NIS |
552 | if (s < PL_bufend && *s == '#') { |
553 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 554 | s++; |
60e6418e | 555 | if (s < PL_bufend) { |
463ee0b2 | 556 | s++; |
60e6418e GS |
557 | if (PL_in_eval && !PL_rsfp) { |
558 | incline(s); | |
559 | continue; | |
560 | } | |
561 | } | |
463ee0b2 | 562 | } |
ffb4593c NT |
563 | |
564 | /* only continue to recharge the buffer if we're at the end | |
565 | * of the buffer, we're not reading from a source filter, and | |
566 | * we're in normal lexing mode | |
567 | */ | |
09bef843 SB |
568 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
569 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 570 | return s; |
ffb4593c NT |
571 | |
572 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
573 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
574 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
575 | { | |
576 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
577 | if (PL_minus_n || PL_minus_p) { |
578 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
579 | ";}continue{print or die qq(-p destination: $!\\n)" : |
580 | ""); | |
3280af22 NIS |
581 | sv_catpv(PL_linestr,";}"); |
582 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
583 | } |
584 | else | |
3280af22 | 585 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
586 | |
587 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
588 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
589 | = SvPVX(PL_linestr); | |
3280af22 | 590 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 591 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
592 | |
593 | /* Close the filehandle. Could be from -P preprocessor, | |
594 | * STDIN, or a regular file. If we were reading code from | |
595 | * STDIN (because the commandline held no -e or filename) | |
596 | * then we don't close it, we reset it so the code can | |
597 | * read from STDIN too. | |
598 | */ | |
599 | ||
3280af22 NIS |
600 | if (PL_preprocess && !PL_in_eval) |
601 | (void)PerlProc_pclose(PL_rsfp); | |
602 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
603 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 604 | else |
3280af22 NIS |
605 | (void)PerlIO_close(PL_rsfp); |
606 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
607 | return s; |
608 | } | |
ffb4593c NT |
609 | |
610 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
611 | /* make corresponding updates to old pointers, for yyerror() */ |
612 | oldprevlen = PL_oldbufptr - PL_bufend; | |
613 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
614 | if (PL_last_uni) | |
615 | oldunilen = PL_last_uni - PL_bufend; | |
616 | if (PL_last_lop) | |
617 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
618 | PL_linestart = PL_bufptr = s + prevlen; |
619 | PL_bufend = s + SvCUR(PL_linestr); | |
620 | s = PL_bufptr; | |
09bef843 SB |
621 | PL_oldbufptr = s + oldprevlen; |
622 | PL_oldoldbufptr = s + oldoldprevlen; | |
623 | if (PL_last_uni) | |
624 | PL_last_uni = s + oldunilen; | |
625 | if (PL_last_lop) | |
626 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 627 | incline(s); |
ffb4593c NT |
628 | |
629 | /* debugger active and we're not compiling the debugger code, | |
630 | * so store the line into the debugger's array of lines | |
631 | */ | |
3280af22 | 632 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
633 | SV *sv = NEWSV(85,0); |
634 | ||
635 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 636 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
637 | (void)SvIOK_on(sv); |
638 | SvIVX(sv) = 0; | |
57843af0 | 639 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 640 | } |
463ee0b2 | 641 | } |
a687059c | 642 | } |
378cc40b | 643 | |
ffb4593c NT |
644 | /* |
645 | * S_check_uni | |
646 | * Check the unary operators to ensure there's no ambiguity in how they're | |
647 | * used. An ambiguous piece of code would be: | |
648 | * rand + 5 | |
649 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
650 | * the +5 is its argument. | |
651 | */ | |
652 | ||
76e3520e | 653 | STATIC void |
cea2e8a9 | 654 | S_check_uni(pTHX) |
ba106d47 | 655 | { |
2f3197b3 | 656 | char *s; |
a0d0e21e | 657 | char *t; |
2f3197b3 | 658 | |
3280af22 | 659 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 660 | return; |
3280af22 NIS |
661 | while (isSPACE(*PL_last_uni)) |
662 | PL_last_uni++; | |
7e2040f0 | 663 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 664 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 665 | return; |
0453d815 | 666 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 667 | char ch = *s; |
0453d815 | 668 | *s = '\0'; |
4e553d73 NIS |
669 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
670 | "Warning: Use of \"%s\" without parens is ambiguous", | |
0453d815 PM |
671 | PL_last_uni); |
672 | *s = ch; | |
673 | } | |
2f3197b3 LW |
674 | } |
675 | ||
ffb4593c NT |
676 | /* workaround to replace the UNI() macro with a function. Only the |
677 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
678 | * source indicate Microport Unix might need it too. | |
679 | */ | |
680 | ||
ffed7fef LW |
681 | #ifdef CRIPPLED_CC |
682 | ||
683 | #undef UNI | |
ffed7fef | 684 | #define UNI(f) return uni(f,s) |
ffed7fef | 685 | |
76e3520e | 686 | STATIC int |
cea2e8a9 | 687 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
688 | { |
689 | yylval.ival = f; | |
3280af22 NIS |
690 | PL_expect = XTERM; |
691 | PL_bufptr = s; | |
8f872242 NIS |
692 | PL_last_uni = PL_oldbufptr; |
693 | PL_last_lop_op = f; | |
ffed7fef LW |
694 | if (*s == '(') |
695 | return FUNC1; | |
696 | s = skipspace(s); | |
697 | if (*s == '(') | |
698 | return FUNC1; | |
699 | else | |
700 | return UNIOP; | |
701 | } | |
702 | ||
a0d0e21e LW |
703 | #endif /* CRIPPLED_CC */ |
704 | ||
ffb4593c NT |
705 | /* |
706 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
707 | * with a subroutine, S_lop() for which LOP is just another name. | |
708 | */ | |
709 | ||
a0d0e21e LW |
710 | #define LOP(f,x) return lop(f,x,s) |
711 | ||
ffb4593c NT |
712 | /* |
713 | * S_lop | |
714 | * Build a list operator (or something that might be one). The rules: | |
715 | * - if we have a next token, then it's a list operator [why?] | |
716 | * - if the next thing is an opening paren, then it's a function | |
717 | * - else it's a list operator | |
718 | */ | |
719 | ||
76e3520e | 720 | STATIC I32 |
a0be28da | 721 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 722 | { |
79072805 | 723 | yylval.ival = f; |
35c8bce7 | 724 | CLINE; |
075953c3 | 725 | REPORT("lop", f) |
3280af22 NIS |
726 | PL_expect = x; |
727 | PL_bufptr = s; | |
728 | PL_last_lop = PL_oldbufptr; | |
729 | PL_last_lop_op = f; | |
730 | if (PL_nexttoke) | |
a0d0e21e | 731 | return LSTOP; |
79072805 LW |
732 | if (*s == '(') |
733 | return FUNC; | |
734 | s = skipspace(s); | |
735 | if (*s == '(') | |
736 | return FUNC; | |
737 | else | |
738 | return LSTOP; | |
739 | } | |
740 | ||
ffb4593c NT |
741 | /* |
742 | * S_force_next | |
9cbb5ea2 | 743 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 744 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
745 | * to know what token to return the next time the lexer is called. Caller |
746 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
747 | * handles the token correctly. | |
ffb4593c NT |
748 | */ |
749 | ||
4e553d73 | 750 | STATIC void |
cea2e8a9 | 751 | S_force_next(pTHX_ I32 type) |
79072805 | 752 | { |
3280af22 NIS |
753 | PL_nexttype[PL_nexttoke] = type; |
754 | PL_nexttoke++; | |
755 | if (PL_lex_state != LEX_KNOWNEXT) { | |
756 | PL_lex_defer = PL_lex_state; | |
757 | PL_lex_expect = PL_expect; | |
758 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
759 | } |
760 | } | |
761 | ||
ffb4593c NT |
762 | /* |
763 | * S_force_word | |
764 | * When the lexer knows the next thing is a word (for instance, it has | |
765 | * just seen -> and it knows that the next char is a word char, then | |
766 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
767 | * | |
768 | * Arguments: | |
b1b65b59 | 769 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
770 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
771 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
772 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
773 | * int allow_pack : if true, : characters will also be allowed (require, | |
774 | * use, etc. do this) | |
9cbb5ea2 | 775 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
776 | */ |
777 | ||
76e3520e | 778 | STATIC char * |
cea2e8a9 | 779 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 780 | { |
463ee0b2 LW |
781 | register char *s; |
782 | STRLEN len; | |
4e553d73 | 783 | |
463ee0b2 LW |
784 | start = skipspace(start); |
785 | s = start; | |
7e2040f0 | 786 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 787 | (allow_pack && *s == ':') || |
15f0808c | 788 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 789 | { |
3280af22 NIS |
790 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
791 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
792 | return start; |
793 | if (token == METHOD) { | |
794 | s = skipspace(s); | |
795 | if (*s == '(') | |
3280af22 | 796 | PL_expect = XTERM; |
463ee0b2 | 797 | else { |
3280af22 | 798 | PL_expect = XOPERATOR; |
463ee0b2 | 799 | } |
79072805 | 800 | } |
3280af22 NIS |
801 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
802 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
803 | force_next(token); |
804 | } | |
805 | return s; | |
806 | } | |
807 | ||
ffb4593c NT |
808 | /* |
809 | * S_force_ident | |
9cbb5ea2 | 810 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
811 | * text only contains the "foo" portion. The first argument is a pointer |
812 | * to the "foo", and the second argument is the type symbol to prefix. | |
813 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 814 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
815 | */ |
816 | ||
76e3520e | 817 | STATIC void |
cea2e8a9 | 818 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
819 | { |
820 | if (s && *s) { | |
11343788 | 821 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 822 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 823 | force_next(WORD); |
748a9306 | 824 | if (kind) { |
11343788 | 825 | o->op_private = OPpCONST_ENTERED; |
55497cff | 826 | /* XXX see note in pp_entereval() for why we forgo typo |
827 | warnings if the symbol must be introduced in an eval. | |
828 | GSAR 96-10-12 */ | |
3280af22 | 829 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
830 | kind == '$' ? SVt_PV : |
831 | kind == '@' ? SVt_PVAV : | |
832 | kind == '%' ? SVt_PVHV : | |
833 | SVt_PVGV | |
834 | ); | |
748a9306 | 835 | } |
79072805 LW |
836 | } |
837 | } | |
838 | ||
1571675a GS |
839 | NV |
840 | Perl_str_to_version(pTHX_ SV *sv) | |
841 | { | |
842 | NV retval = 0.0; | |
843 | NV nshift = 1.0; | |
844 | STRLEN len; | |
845 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 846 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
847 | char *end = start + len; |
848 | while (start < end) { | |
ba210ebe | 849 | STRLEN skip; |
1571675a GS |
850 | UV n; |
851 | if (utf) | |
9041c2e3 | 852 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
853 | else { |
854 | n = *(U8*)start; | |
855 | skip = 1; | |
856 | } | |
857 | retval += ((NV)n)/nshift; | |
858 | start += skip; | |
859 | nshift *= 1000; | |
860 | } | |
861 | return retval; | |
862 | } | |
863 | ||
4e553d73 | 864 | /* |
ffb4593c NT |
865 | * S_force_version |
866 | * Forces the next token to be a version number. | |
e759cc13 RGS |
867 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
868 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
869 | * must use an alternative parsing method). | |
ffb4593c NT |
870 | */ |
871 | ||
76e3520e | 872 | STATIC char * |
e759cc13 | 873 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 874 | { |
875 | OP *version = Nullop; | |
44dcb63b | 876 | char *d; |
89bfa8cd | 877 | |
878 | s = skipspace(s); | |
879 | ||
44dcb63b | 880 | d = s; |
dd629d5b | 881 | if (*d == 'v') |
44dcb63b | 882 | d++; |
44dcb63b | 883 | if (isDIGIT(*d)) { |
e759cc13 RGS |
884 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
885 | d++; | |
9f3d182e | 886 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 887 | SV *ver; |
b73d6f50 | 888 | s = scan_num(s, &yylval); |
89bfa8cd | 889 | version = yylval.opval; |
dd629d5b GS |
890 | ver = cSVOPx(version)->op_sv; |
891 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 892 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
893 | SvNVX(ver) = str_to_version(ver); |
894 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 895 | } |
89bfa8cd | 896 | } |
e759cc13 RGS |
897 | else if (guessing) |
898 | return s; | |
89bfa8cd | 899 | } |
900 | ||
901 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 902 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 903 | force_next(WORD); |
89bfa8cd | 904 | |
e759cc13 | 905 | return s; |
89bfa8cd | 906 | } |
907 | ||
ffb4593c NT |
908 | /* |
909 | * S_tokeq | |
910 | * Tokenize a quoted string passed in as an SV. It finds the next | |
911 | * chunk, up to end of string or a backslash. It may make a new | |
912 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
913 | * turns \\ into \. | |
914 | */ | |
915 | ||
76e3520e | 916 | STATIC SV * |
cea2e8a9 | 917 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
918 | { |
919 | register char *s; | |
920 | register char *send; | |
921 | register char *d; | |
b3ac6de7 IZ |
922 | STRLEN len = 0; |
923 | SV *pv = sv; | |
79072805 LW |
924 | |
925 | if (!SvLEN(sv)) | |
b3ac6de7 | 926 | goto finish; |
79072805 | 927 | |
a0d0e21e | 928 | s = SvPV_force(sv, len); |
21a311ee | 929 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 930 | goto finish; |
463ee0b2 | 931 | send = s + len; |
79072805 LW |
932 | while (s < send && *s != '\\') |
933 | s++; | |
934 | if (s == send) | |
b3ac6de7 | 935 | goto finish; |
79072805 | 936 | d = s; |
be4731d2 | 937 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 938 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
939 | if (SvUTF8(sv)) |
940 | SvUTF8_on(pv); | |
941 | } | |
79072805 LW |
942 | while (s < send) { |
943 | if (*s == '\\') { | |
a0d0e21e | 944 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
945 | s++; /* all that, just for this */ |
946 | } | |
947 | *d++ = *s++; | |
948 | } | |
949 | *d = '\0'; | |
463ee0b2 | 950 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 951 | finish: |
3280af22 | 952 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 953 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
954 | return sv; |
955 | } | |
956 | ||
ffb4593c NT |
957 | /* |
958 | * Now come three functions related to double-quote context, | |
959 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
960 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
961 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
962 | * to handle functions and concatenation. | |
963 | * They assume that whoever calls them will be setting up a fake | |
964 | * join call, because each subthing puts a ',' after it. This lets | |
965 | * "lower \luPpEr" | |
966 | * become | |
967 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
968 | * | |
969 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
970 | * arguments and join's arguments are created or not). | |
971 | */ | |
972 | ||
973 | /* | |
974 | * S_sublex_start | |
975 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
976 | * | |
977 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
978 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
979 | * | |
980 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
981 | * | |
982 | * Everything else becomes a FUNC. | |
983 | * | |
984 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
985 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
986 | * call to S_sublex_push(). | |
987 | */ | |
988 | ||
76e3520e | 989 | STATIC I32 |
cea2e8a9 | 990 | S_sublex_start(pTHX) |
79072805 LW |
991 | { |
992 | register I32 op_type = yylval.ival; | |
79072805 LW |
993 | |
994 | if (op_type == OP_NULL) { | |
3280af22 NIS |
995 | yylval.opval = PL_lex_op; |
996 | PL_lex_op = Nullop; | |
79072805 LW |
997 | return THING; |
998 | } | |
999 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 1000 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
1001 | |
1002 | if (SvTYPE(sv) == SVt_PVIV) { | |
1003 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
1004 | STRLEN len; | |
1005 | char *p; | |
1006 | SV *nsv; | |
1007 | ||
1008 | p = SvPV(sv, len); | |
79cb57f6 | 1009 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
1010 | if (SvUTF8(sv)) |
1011 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
1012 | SvREFCNT_dec(sv); |
1013 | sv = nsv; | |
4e553d73 | 1014 | } |
b3ac6de7 | 1015 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 1016 | PL_lex_stuff = Nullsv; |
79072805 LW |
1017 | return THING; |
1018 | } | |
1019 | ||
3280af22 NIS |
1020 | PL_sublex_info.super_state = PL_lex_state; |
1021 | PL_sublex_info.sub_inwhat = op_type; | |
1022 | PL_sublex_info.sub_op = PL_lex_op; | |
1023 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1024 | |
3280af22 NIS |
1025 | PL_expect = XTERM; |
1026 | if (PL_lex_op) { | |
1027 | yylval.opval = PL_lex_op; | |
1028 | PL_lex_op = Nullop; | |
55497cff | 1029 | return PMFUNC; |
1030 | } | |
1031 | else | |
1032 | return FUNC; | |
1033 | } | |
1034 | ||
ffb4593c NT |
1035 | /* |
1036 | * S_sublex_push | |
1037 | * Create a new scope to save the lexing state. The scope will be | |
1038 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1039 | * to the uc, lc, etc. found before. | |
1040 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1041 | */ | |
1042 | ||
76e3520e | 1043 | STATIC I32 |
cea2e8a9 | 1044 | S_sublex_push(pTHX) |
55497cff | 1045 | { |
f46d017c | 1046 | ENTER; |
55497cff | 1047 | |
3280af22 NIS |
1048 | PL_lex_state = PL_sublex_info.super_state; |
1049 | SAVEI32(PL_lex_dojoin); | |
1050 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1051 | SAVEI32(PL_lex_casemods); |
1052 | SAVEI32(PL_lex_starts); | |
1053 | SAVEI32(PL_lex_state); | |
7766f137 | 1054 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1055 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1056 | SAVECOPLINE(PL_curcop); |
3280af22 | 1057 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1058 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1059 | SAVEPPTR(PL_oldbufptr); |
1060 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1061 | SAVEPPTR(PL_last_lop); |
1062 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1063 | SAVEPPTR(PL_linestart); |
1064 | SAVESPTR(PL_linestr); | |
1065 | SAVEPPTR(PL_lex_brackstack); | |
1066 | SAVEPPTR(PL_lex_casestack); | |
1067 | ||
1068 | PL_linestr = PL_lex_stuff; | |
1069 | PL_lex_stuff = Nullsv; | |
1070 | ||
9cbb5ea2 GS |
1071 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1072 | = SvPVX(PL_linestr); | |
3280af22 | 1073 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1074 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1075 | SAVEFREESV(PL_linestr); |
1076 | ||
1077 | PL_lex_dojoin = FALSE; | |
1078 | PL_lex_brackets = 0; | |
3280af22 NIS |
1079 | New(899, PL_lex_brackstack, 120, char); |
1080 | New(899, PL_lex_casestack, 12, char); | |
1081 | SAVEFREEPV(PL_lex_brackstack); | |
1082 | SAVEFREEPV(PL_lex_casestack); | |
1083 | PL_lex_casemods = 0; | |
1084 | *PL_lex_casestack = '\0'; | |
1085 | PL_lex_starts = 0; | |
1086 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1087 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1088 | |
1089 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1090 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1091 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1092 | else |
3280af22 | 1093 | PL_lex_inpat = Nullop; |
79072805 | 1094 | |
55497cff | 1095 | return '('; |
79072805 LW |
1096 | } |
1097 | ||
ffb4593c NT |
1098 | /* |
1099 | * S_sublex_done | |
1100 | * Restores lexer state after a S_sublex_push. | |
1101 | */ | |
1102 | ||
76e3520e | 1103 | STATIC I32 |
cea2e8a9 | 1104 | S_sublex_done(pTHX) |
79072805 | 1105 | { |
3280af22 | 1106 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1107 | SV *sv = newSVpvn("",0); |
1108 | if (SvUTF8(PL_linestr)) | |
1109 | SvUTF8_on(sv); | |
3280af22 | 1110 | PL_expect = XOPERATOR; |
9aa983d2 | 1111 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1112 | return THING; |
1113 | } | |
1114 | ||
3280af22 NIS |
1115 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1116 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1117 | return yylex(); |
79072805 LW |
1118 | } |
1119 | ||
ffb4593c | 1120 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1121 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1122 | PL_linestr = PL_lex_repl; | |
1123 | PL_lex_inpat = 0; | |
1124 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1125 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1126 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1127 | SAVEFREESV(PL_linestr); |
1128 | PL_lex_dojoin = FALSE; | |
1129 | PL_lex_brackets = 0; | |
3280af22 NIS |
1130 | PL_lex_casemods = 0; |
1131 | *PL_lex_casestack = '\0'; | |
1132 | PL_lex_starts = 0; | |
25da4f38 | 1133 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1134 | PL_lex_state = LEX_INTERPNORMAL; |
1135 | PL_lex_starts++; | |
e9fa98b2 HS |
1136 | /* we don't clear PL_lex_repl here, so that we can check later |
1137 | whether this is an evalled subst; that means we rely on the | |
1138 | logic to ensure sublex_done() is called again only via the | |
1139 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1140 | } |
e9fa98b2 | 1141 | else { |
3280af22 | 1142 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1143 | PL_lex_repl = Nullsv; |
1144 | } | |
79072805 | 1145 | return ','; |
ffed7fef LW |
1146 | } |
1147 | else { | |
f46d017c | 1148 | LEAVE; |
3280af22 NIS |
1149 | PL_bufend = SvPVX(PL_linestr); |
1150 | PL_bufend += SvCUR(PL_linestr); | |
1151 | PL_expect = XOPERATOR; | |
09bef843 | 1152 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1153 | return ')'; |
ffed7fef LW |
1154 | } |
1155 | } | |
1156 | ||
02aa26ce NT |
1157 | /* |
1158 | scan_const | |
1159 | ||
1160 | Extracts a pattern, double-quoted string, or transliteration. This | |
1161 | is terrifying code. | |
1162 | ||
3280af22 NIS |
1163 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1164 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1165 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1166 | ||
9b599b2a GS |
1167 | Returns a pointer to the character scanned up to. Iff this is |
1168 | advanced from the start pointer supplied (ie if anything was | |
1169 | successfully parsed), will leave an OP for the substring scanned | |
1170 | in yylval. Caller must intuit reason for not parsing further | |
1171 | by looking at the next characters herself. | |
1172 | ||
02aa26ce NT |
1173 | In patterns: |
1174 | backslashes: | |
1175 | double-quoted style: \r and \n | |
1176 | regexp special ones: \D \s | |
1177 | constants: \x3 | |
1178 | backrefs: \1 (deprecated in substitution replacements) | |
1179 | case and quoting: \U \Q \E | |
1180 | stops on @ and $, but not for $ as tail anchor | |
1181 | ||
1182 | In transliterations: | |
1183 | characters are VERY literal, except for - not at the start or end | |
1184 | of the string, which indicates a range. scan_const expands the | |
1185 | range to the full set of intermediate characters. | |
1186 | ||
1187 | In double-quoted strings: | |
1188 | backslashes: | |
1189 | double-quoted style: \r and \n | |
1190 | constants: \x3 | |
1191 | backrefs: \1 (deprecated) | |
1192 | case and quoting: \U \Q \E | |
1193 | stops on @ and $ | |
1194 | ||
1195 | scan_const does *not* construct ops to handle interpolated strings. | |
1196 | It stops processing as soon as it finds an embedded $ or @ variable | |
1197 | and leaves it to the caller to work out what's going on. | |
1198 | ||
1199 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1200 | ||
1201 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1202 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1203 | followed by one of ")| \n\t" | |
1204 | ||
1205 | \1 (backreferences) are turned into $1 | |
1206 | ||
1207 | The structure of the code is | |
1208 | while (there's a character to process) { | |
1209 | handle transliteration ranges | |
1210 | skip regexp comments | |
1211 | skip # initiated comments in //x patterns | |
1212 | check for embedded @foo | |
1213 | check for embedded scalars | |
1214 | if (backslash) { | |
1215 | leave intact backslashes from leave (below) | |
1216 | deprecate \1 in strings and sub replacements | |
1217 | handle string-changing backslashes \l \U \Q \E, etc. | |
1218 | switch (what was escaped) { | |
1219 | handle - in a transliteration (becomes a literal -) | |
1220 | handle \132 octal characters | |
1221 | handle 0x15 hex characters | |
1222 | handle \cV (control V) | |
1223 | handle printf backslashes (\f, \r, \n, etc) | |
1224 | } (end switch) | |
1225 | } (end if backslash) | |
1226 | } (end while character to read) | |
4e553d73 | 1227 | |
02aa26ce NT |
1228 | */ |
1229 | ||
76e3520e | 1230 | STATIC char * |
cea2e8a9 | 1231 | S_scan_const(pTHX_ char *start) |
79072805 | 1232 | { |
3280af22 | 1233 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1234 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1235 | register char *s = start; /* start of the constant */ | |
1236 | register char *d = SvPVX(sv); /* destination for copies */ | |
1237 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1238 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1239 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1240 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1241 | UV uv; |
1242 | ||
dff6d3cd | 1243 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1244 | PL_lex_inpat |
4a2d328f | 1245 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1246 | : ""; |
79072805 | 1247 | |
2b9d42f0 NIS |
1248 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1249 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1250 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1251 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1252 | } | |
1253 | ||
1254 | ||
79072805 | 1255 | while (s < send || dorange) { |
02aa26ce | 1256 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1257 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1258 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1259 | if (dorange) { |
1ba5c669 JH |
1260 | I32 i; /* current expanded character */ |
1261 | I32 min; /* first character in range */ | |
1262 | I32 max; /* last character in range */ | |
02aa26ce | 1263 | |
2b9d42f0 | 1264 | if (has_utf8) { |
8973db79 JH |
1265 | char *c = (char*)utf8_hop((U8*)d, -1); |
1266 | char *e = d++; | |
1267 | while (e-- > c) | |
1268 | *(e + 1) = *e; | |
25716404 | 1269 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1270 | /* mark the range as done, and continue */ |
1271 | dorange = FALSE; | |
1272 | didrange = TRUE; | |
1273 | continue; | |
1274 | } | |
2b9d42f0 | 1275 | |
02aa26ce | 1276 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1277 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1278 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1279 | d -= 2; /* eat the first char and the - */ |
1280 | ||
8ada0baa JH |
1281 | min = (U8)*d; /* first char in range */ |
1282 | max = (U8)d[1]; /* last char in range */ | |
1283 | ||
c2e66d9e | 1284 | if (min > max) { |
01ec43d0 | 1285 | Perl_croak(aTHX_ |
1ba5c669 JH |
1286 | "Invalid [] range \"%c-%c\" in transliteration operator", |
1287 | (char)min, (char)max); | |
c2e66d9e GS |
1288 | } |
1289 | ||
c7f1f016 | 1290 | #ifdef EBCDIC |
8ada0baa JH |
1291 | if ((isLOWER(min) && isLOWER(max)) || |
1292 | (isUPPER(min) && isUPPER(max))) { | |
1293 | if (isLOWER(min)) { | |
1294 | for (i = min; i <= max; i++) | |
1295 | if (isLOWER(i)) | |
db42d148 | 1296 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1297 | } else { |
1298 | for (i = min; i <= max; i++) | |
1299 | if (isUPPER(i)) | |
db42d148 | 1300 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1301 | } |
1302 | } | |
1303 | else | |
1304 | #endif | |
1305 | for (i = min; i <= max; i++) | |
1306 | *d++ = i; | |
02aa26ce NT |
1307 | |
1308 | /* mark the range as done, and continue */ | |
79072805 | 1309 | dorange = FALSE; |
01ec43d0 | 1310 | didrange = TRUE; |
79072805 | 1311 | continue; |
4e553d73 | 1312 | } |
02aa26ce NT |
1313 | |
1314 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1315 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1316 | if (didrange) { |
1fafa243 | 1317 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1318 | } |
2b9d42f0 | 1319 | if (has_utf8) { |
25716404 | 1320 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1321 | s++; |
1322 | continue; | |
1323 | } | |
79072805 LW |
1324 | dorange = TRUE; |
1325 | s++; | |
01ec43d0 GS |
1326 | } |
1327 | else { | |
1328 | didrange = FALSE; | |
1329 | } | |
79072805 | 1330 | } |
02aa26ce NT |
1331 | |
1332 | /* if we get here, we're not doing a transliteration */ | |
1333 | ||
0f5d15d6 IZ |
1334 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1335 | except for the last char, which will be done separately. */ | |
3280af22 | 1336 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1337 | if (s[2] == '#') { |
1338 | while (s < send && *s != ')') | |
db42d148 | 1339 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1340 | } |
1341 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1342 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1343 | { | |
cc6b7395 | 1344 | I32 count = 1; |
0f5d15d6 | 1345 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1346 | char c; |
1347 | ||
d9f97599 GS |
1348 | while (count && (c = *regparse)) { |
1349 | if (c == '\\' && regparse[1]) | |
1350 | regparse++; | |
4e553d73 | 1351 | else if (c == '{') |
cc6b7395 | 1352 | count++; |
4e553d73 | 1353 | else if (c == '}') |
cc6b7395 | 1354 | count--; |
d9f97599 | 1355 | regparse++; |
cc6b7395 | 1356 | } |
5bdf89e7 IZ |
1357 | if (*regparse != ')') { |
1358 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1359 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1360 | } |
0f5d15d6 | 1361 | while (s < regparse) |
db42d148 | 1362 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1363 | } |
748a9306 | 1364 | } |
02aa26ce NT |
1365 | |
1366 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1367 | else if (*s == '#' && PL_lex_inpat && |
1368 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1369 | while (s+1 < send && *s != '\n') |
db42d148 | 1370 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1371 | } |
02aa26ce | 1372 | |
5d1d4326 JH |
1373 | /* check for embedded arrays |
1374 | (@foo, @:foo, @'foo, @{foo}, @$foo, @+, @-) | |
1375 | */ | |
7e2040f0 | 1376 | else if (*s == '@' && s[1] |
5d1d4326 | 1377 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1378 | break; |
02aa26ce NT |
1379 | |
1380 | /* check for embedded scalars. only stop if we're sure it's a | |
1381 | variable. | |
1382 | */ | |
79072805 | 1383 | else if (*s == '$') { |
3280af22 | 1384 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1385 | break; |
6002328a | 1386 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1387 | break; /* in regexp, $ might be tail anchor */ |
1388 | } | |
02aa26ce | 1389 | |
2b9d42f0 NIS |
1390 | /* End of else if chain - OP_TRANS rejoin rest */ |
1391 | ||
02aa26ce | 1392 | /* backslashes */ |
79072805 LW |
1393 | if (*s == '\\' && s+1 < send) { |
1394 | s++; | |
02aa26ce NT |
1395 | |
1396 | /* some backslashes we leave behind */ | |
c9f97d15 | 1397 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1398 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1399 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1400 | continue; |
1401 | } | |
02aa26ce NT |
1402 | |
1403 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1404 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1405 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1406 | { |
599cee73 | 1407 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1408 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1409 | *--s = '$'; |
1410 | break; | |
1411 | } | |
02aa26ce NT |
1412 | |
1413 | /* string-change backslash escapes */ | |
3280af22 | 1414 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1415 | --s; |
1416 | break; | |
1417 | } | |
02aa26ce NT |
1418 | |
1419 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1420 | switch (*s) { |
02aa26ce NT |
1421 | |
1422 | /* quoted - in transliterations */ | |
79072805 | 1423 | case '-': |
3280af22 | 1424 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1425 | *d++ = *s++; |
1426 | continue; | |
1427 | } | |
1428 | /* FALL THROUGH */ | |
1429 | default: | |
11b8faa4 | 1430 | { |
7e84c16c | 1431 | if (ckWARN(WARN_MISC) && isALNUM(*s)) |
4e553d73 | 1432 | Perl_warner(aTHX_ WARN_MISC, |
11b8faa4 JH |
1433 | "Unrecognized escape \\%c passed through", |
1434 | *s); | |
1435 | /* default action is to copy the quoted character */ | |
f9a63242 | 1436 | goto default_action; |
11b8faa4 | 1437 | } |
02aa26ce NT |
1438 | |
1439 | /* \132 indicates an octal constant */ | |
79072805 LW |
1440 | case '0': case '1': case '2': case '3': |
1441 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1442 | { |
53305cf1 NC |
1443 | I32 flags = 0; |
1444 | STRLEN len = 3; | |
1445 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1446 | s += len; |
1447 | } | |
012bcf8d | 1448 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1449 | |
1450 | /* \x24 indicates a hex constant */ | |
79072805 | 1451 | case 'x': |
a0ed51b3 LW |
1452 | ++s; |
1453 | if (*s == '{') { | |
1454 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1455 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1456 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1457 | STRLEN len; |
355860ce | 1458 | |
53305cf1 | 1459 | ++s; |
adaeee49 | 1460 | if (!e) { |
a0ed51b3 | 1461 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1462 | continue; |
ba210ebe | 1463 | } |
53305cf1 NC |
1464 | len = e - s; |
1465 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1466 | s = e + 1; |
a0ed51b3 LW |
1467 | } |
1468 | else { | |
ba210ebe | 1469 | { |
53305cf1 | 1470 | STRLEN len = 2; |
a4c04bdc | 1471 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1472 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1473 | s += len; |
1474 | } | |
012bcf8d GS |
1475 | } |
1476 | ||
1477 | NUM_ESCAPE_INSERT: | |
1478 | /* Insert oct or hex escaped character. | |
301d3d20 | 1479 | * There will always enough room in sv since such |
db42d148 | 1480 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1481 | * they can end up as. */ |
ba7cea30 | 1482 | |
c7f1f016 NIS |
1483 | /* We need to map to chars to ASCII before doing the tests |
1484 | to cover EBCDIC | |
1485 | */ | |
c4d5f83a | 1486 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1487 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1488 | /* Might need to recode whatever we have |
1489 | * accumulated so far if it contains any | |
1490 | * hibit chars. | |
1491 | * | |
1492 | * (Can't we keep track of that and avoid | |
1493 | * this rescan? --jhi) | |
012bcf8d | 1494 | */ |
c7f1f016 | 1495 | int hicount = 0; |
63cd0674 NIS |
1496 | U8 *c; |
1497 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1498 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1499 | hicount++; |
db42d148 | 1500 | } |
012bcf8d | 1501 | } |
63cd0674 | 1502 | if (hicount) { |
db42d148 NIS |
1503 | STRLEN offset = d - SvPVX(sv); |
1504 | U8 *src, *dst; | |
1505 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1506 | src = (U8 *)d - 1; | |
1507 | dst = src+hicount; | |
1508 | d += hicount; | |
1509 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1510 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1511 | U8 ch = NATIVE_TO_ASCII(*src); |
db42d148 NIS |
1512 | *dst-- = UTF8_EIGHT_BIT_LO(ch); |
1513 | *dst-- = UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1514 | } |
1515 | else { | |
63cd0674 | 1516 | *dst-- = *src; |
012bcf8d | 1517 | } |
c7f1f016 | 1518 | src--; |
012bcf8d GS |
1519 | } |
1520 | } | |
1521 | } | |
1522 | ||
9aa983d2 | 1523 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1524 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1525 | has_utf8 = TRUE; |
f9a63242 JH |
1526 | if (PL_lex_inwhat == OP_TRANS && |
1527 | PL_sublex_info.sub_op) { | |
1528 | PL_sublex_info.sub_op->op_private |= | |
1529 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1530 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1531 | } |
012bcf8d | 1532 | } |
a0ed51b3 | 1533 | else { |
012bcf8d | 1534 | *d++ = (char)uv; |
a0ed51b3 | 1535 | } |
012bcf8d GS |
1536 | } |
1537 | else { | |
c4d5f83a | 1538 | *d++ = (char) uv; |
a0ed51b3 | 1539 | } |
79072805 | 1540 | continue; |
02aa26ce | 1541 | |
b239daa5 | 1542 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1543 | case 'N': |
55eda711 | 1544 | ++s; |
423cee85 JH |
1545 | if (*s == '{') { |
1546 | char* e = strchr(s, '}'); | |
155aba94 | 1547 | SV *res; |
423cee85 JH |
1548 | STRLEN len; |
1549 | char *str; | |
4e553d73 | 1550 | |
423cee85 | 1551 | if (!e) { |
5777a3f7 | 1552 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1553 | e = s - 1; |
1554 | goto cont_scan; | |
1555 | } | |
55eda711 JH |
1556 | res = newSVpvn(s + 1, e - s - 1); |
1557 | res = new_constant( Nullch, 0, "charnames", | |
1558 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1559 | if (has_utf8) |
1560 | sv_utf8_upgrade(res); | |
423cee85 | 1561 | str = SvPV(res,len); |
89491803 | 1562 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1563 | char *ostart = SvPVX(sv); |
1564 | SvCUR_set(sv, d - ostart); | |
1565 | SvPOK_on(sv); | |
e4f3eed8 | 1566 | *d = '\0'; |
f08d6ad9 | 1567 | sv_utf8_upgrade(sv); |
d2f449dd SB |
1568 | /* this just broke our allocation above... */ |
1569 | SvGROW(sv, send - start); | |
f08d6ad9 | 1570 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1571 | has_utf8 = TRUE; |
f08d6ad9 | 1572 | } |
b239daa5 | 1573 | if (len > e - s + 4) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1574 | char *odest = SvPVX(sv); |
1575 | ||
8973db79 | 1576 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1577 | d = SvPVX(sv) + (d - odest); |
1578 | } | |
1579 | Copy(str, d, len, char); | |
1580 | d += len; | |
1581 | SvREFCNT_dec(res); | |
1582 | cont_scan: | |
1583 | s = e + 1; | |
1584 | } | |
1585 | else | |
5777a3f7 | 1586 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1587 | continue; |
1588 | ||
02aa26ce | 1589 | /* \c is a control character */ |
79072805 LW |
1590 | case 'c': |
1591 | s++; | |
ba210ebe JH |
1592 | { |
1593 | U8 c = *s++; | |
c7f1f016 NIS |
1594 | #ifdef EBCDIC |
1595 | if (isLOWER(c)) | |
1596 | c = toUPPER(c); | |
1597 | #endif | |
db42d148 | 1598 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1599 | } |
79072805 | 1600 | continue; |
02aa26ce NT |
1601 | |
1602 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1603 | case 'b': |
db42d148 | 1604 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1605 | break; |
1606 | case 'n': | |
db42d148 | 1607 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1608 | break; |
1609 | case 'r': | |
db42d148 | 1610 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1611 | break; |
1612 | case 'f': | |
db42d148 | 1613 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1614 | break; |
1615 | case 't': | |
db42d148 | 1616 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1617 | break; |
34a3fe2a | 1618 | case 'e': |
db42d148 | 1619 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1620 | break; |
1621 | case 'a': | |
db42d148 | 1622 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1623 | break; |
02aa26ce NT |
1624 | } /* end switch */ |
1625 | ||
79072805 LW |
1626 | s++; |
1627 | continue; | |
02aa26ce NT |
1628 | } /* end if (backslash) */ |
1629 | ||
f9a63242 | 1630 | default_action: |
2b9d42f0 NIS |
1631 | /* If we started with encoded form, or already know we want it |
1632 | and then encode the next character */ | |
1633 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1634 | STRLEN len = 1; | |
1635 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1636 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1637 | s += len; | |
1638 | if (need > len) { | |
1639 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1640 | STRLEN off = d - SvPVX(sv); | |
1641 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1642 | } | |
1643 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1644 | has_utf8 = TRUE; | |
1645 | } | |
1646 | else { | |
1647 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1648 | } | |
02aa26ce NT |
1649 | } /* while loop to process each character */ |
1650 | ||
1651 | /* terminate the string and set up the sv */ | |
79072805 | 1652 | *d = '\0'; |
463ee0b2 | 1653 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1654 | if (SvCUR(sv) >= SvLEN(sv)) |
585602fa | 1655 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1656 | |
79072805 | 1657 | SvPOK_on(sv); |
9f4817db | 1658 | if (PL_encoding && !has_utf8) { |
5d170f3a | 1659 | Perl_sv_recode_to_utf8(aTHX_ sv, PL_encoding); |
9f4817db JH |
1660 | has_utf8 = TRUE; |
1661 | } | |
2b9d42f0 | 1662 | if (has_utf8) { |
7e2040f0 | 1663 | SvUTF8_on(sv); |
2b9d42f0 NIS |
1664 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1665 | PL_sublex_info.sub_op->op_private |= | |
1666 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1667 | } | |
1668 | } | |
79072805 | 1669 | |
02aa26ce | 1670 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1671 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1672 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1673 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1674 | } |
02aa26ce | 1675 | |
9b599b2a | 1676 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1677 | if (s > PL_bufptr) { |
1678 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1679 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1680 | sv, Nullsv, |
4e553d73 | 1681 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1682 | ? "tr" |
3280af22 | 1683 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1684 | ? "s" |
1685 | : "qq"))); | |
79072805 | 1686 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1687 | } else |
8990e307 | 1688 | SvREFCNT_dec(sv); |
79072805 LW |
1689 | return s; |
1690 | } | |
1691 | ||
ffb4593c NT |
1692 | /* S_intuit_more |
1693 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1694 | * FALSE otherwise. | |
ffb4593c NT |
1695 | * |
1696 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1697 | * | |
1698 | * ->[ and ->{ return TRUE | |
1699 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1700 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1701 | * if we're in a pattern and the first char is a { | |
1702 | * {4,5} (any digits around the comma) returns FALSE | |
1703 | * if we're in a pattern and the first char is a [ | |
1704 | * [] returns FALSE | |
1705 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1706 | * character class or not. It has to deal with things like | |
1707 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1708 | * anything else returns TRUE | |
1709 | */ | |
1710 | ||
9cbb5ea2 GS |
1711 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1712 | ||
76e3520e | 1713 | STATIC int |
cea2e8a9 | 1714 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1715 | { |
3280af22 | 1716 | if (PL_lex_brackets) |
79072805 LW |
1717 | return TRUE; |
1718 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1719 | return TRUE; | |
1720 | if (*s != '{' && *s != '[') | |
1721 | return FALSE; | |
3280af22 | 1722 | if (!PL_lex_inpat) |
79072805 LW |
1723 | return TRUE; |
1724 | ||
1725 | /* In a pattern, so maybe we have {n,m}. */ | |
1726 | if (*s == '{') { | |
1727 | s++; | |
1728 | if (!isDIGIT(*s)) | |
1729 | return TRUE; | |
1730 | while (isDIGIT(*s)) | |
1731 | s++; | |
1732 | if (*s == ',') | |
1733 | s++; | |
1734 | while (isDIGIT(*s)) | |
1735 | s++; | |
1736 | if (*s == '}') | |
1737 | return FALSE; | |
1738 | return TRUE; | |
1739 | ||
1740 | } | |
1741 | ||
1742 | /* On the other hand, maybe we have a character class */ | |
1743 | ||
1744 | s++; | |
1745 | if (*s == ']' || *s == '^') | |
1746 | return FALSE; | |
1747 | else { | |
ffb4593c | 1748 | /* this is terrifying, and it works */ |
79072805 LW |
1749 | int weight = 2; /* let's weigh the evidence */ |
1750 | char seen[256]; | |
f27ffc4a | 1751 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1752 | char *send = strchr(s,']'); |
3280af22 | 1753 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1754 | |
1755 | if (!send) /* has to be an expression */ | |
1756 | return TRUE; | |
1757 | ||
1758 | Zero(seen,256,char); | |
1759 | if (*s == '$') | |
1760 | weight -= 3; | |
1761 | else if (isDIGIT(*s)) { | |
1762 | if (s[1] != ']') { | |
1763 | if (isDIGIT(s[1]) && s[2] == ']') | |
1764 | weight -= 10; | |
1765 | } | |
1766 | else | |
1767 | weight -= 100; | |
1768 | } | |
1769 | for (; s < send; s++) { | |
1770 | last_un_char = un_char; | |
1771 | un_char = (unsigned char)*s; | |
1772 | switch (*s) { | |
1773 | case '@': | |
1774 | case '&': | |
1775 | case '$': | |
1776 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1777 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1778 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1779 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1780 | weight -= 100; |
1781 | else | |
1782 | weight -= 10; | |
1783 | } | |
1784 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1785 | strchr("[#!%*<>()-=",s[1])) { |
1786 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1787 | weight -= 10; |
1788 | else | |
1789 | weight -= 1; | |
1790 | } | |
1791 | break; | |
1792 | case '\\': | |
1793 | un_char = 254; | |
1794 | if (s[1]) { | |
93a17b20 | 1795 | if (strchr("wds]",s[1])) |
79072805 LW |
1796 | weight += 100; |
1797 | else if (seen['\''] || seen['"']) | |
1798 | weight += 1; | |
93a17b20 | 1799 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1800 | weight += 40; |
1801 | else if (isDIGIT(s[1])) { | |
1802 | weight += 40; | |
1803 | while (s[1] && isDIGIT(s[1])) | |
1804 | s++; | |
1805 | } | |
1806 | } | |
1807 | else | |
1808 | weight += 100; | |
1809 | break; | |
1810 | case '-': | |
1811 | if (s[1] == '\\') | |
1812 | weight += 50; | |
93a17b20 | 1813 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1814 | weight += 30; |
93a17b20 | 1815 | if (strchr("zZ79~",s[1])) |
79072805 | 1816 | weight += 30; |
f27ffc4a GS |
1817 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1818 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1819 | break; |
1820 | default: | |
93a17b20 | 1821 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1822 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1823 | char *d = tmpbuf; | |
1824 | while (isALPHA(*s)) | |
1825 | *d++ = *s++; | |
1826 | *d = '\0'; | |
1827 | if (keyword(tmpbuf, d - tmpbuf)) | |
1828 | weight -= 150; | |
1829 | } | |
1830 | if (un_char == last_un_char + 1) | |
1831 | weight += 5; | |
1832 | weight -= seen[un_char]; | |
1833 | break; | |
1834 | } | |
1835 | seen[un_char]++; | |
1836 | } | |
1837 | if (weight >= 0) /* probably a character class */ | |
1838 | return FALSE; | |
1839 | } | |
1840 | ||
1841 | return TRUE; | |
1842 | } | |
ffed7fef | 1843 | |
ffb4593c NT |
1844 | /* |
1845 | * S_intuit_method | |
1846 | * | |
1847 | * Does all the checking to disambiguate | |
1848 | * foo bar | |
1849 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1850 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1851 | * | |
1852 | * First argument is the stuff after the first token, e.g. "bar". | |
1853 | * | |
1854 | * Not a method if bar is a filehandle. | |
1855 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1856 | * Not a method if it's really "Foo $bar" | |
1857 | * Method if it's "foo $bar" | |
1858 | * Not a method if it's really "print foo $bar" | |
1859 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1860 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1861 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1862 | * => |
1863 | */ | |
1864 | ||
76e3520e | 1865 | STATIC int |
cea2e8a9 | 1866 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1867 | { |
1868 | char *s = start + (*start == '$'); | |
3280af22 | 1869 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1870 | STRLEN len; |
1871 | GV* indirgv; | |
1872 | ||
1873 | if (gv) { | |
b6c543e3 | 1874 | CV *cv; |
a0d0e21e LW |
1875 | if (GvIO(gv)) |
1876 | return 0; | |
b6c543e3 IZ |
1877 | if ((cv = GvCVu(gv))) { |
1878 | char *proto = SvPVX(cv); | |
1879 | if (proto) { | |
1880 | if (*proto == ';') | |
1881 | proto++; | |
1882 | if (*proto == '*') | |
1883 | return 0; | |
1884 | } | |
1885 | } else | |
a0d0e21e LW |
1886 | gv = 0; |
1887 | } | |
8903cb82 | 1888 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1889 | /* start is the beginning of the possible filehandle/object, |
1890 | * and s is the end of it | |
1891 | * tmpbuf is a copy of it | |
1892 | */ | |
1893 | ||
a0d0e21e | 1894 | if (*start == '$') { |
3280af22 | 1895 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1896 | return 0; |
1897 | s = skipspace(s); | |
3280af22 NIS |
1898 | PL_bufptr = start; |
1899 | PL_expect = XREF; | |
a0d0e21e LW |
1900 | return *s == '(' ? FUNCMETH : METHOD; |
1901 | } | |
1902 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1903 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1904 | len -= 2; | |
1905 | tmpbuf[len] = '\0'; | |
1906 | goto bare_package; | |
1907 | } | |
1908 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1909 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1910 | return 0; |
1911 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1912 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1913 | s = skipspace(s); |
3280af22 | 1914 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1915 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1916 | bare_package: |
3280af22 | 1917 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1918 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1919 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1920 | PL_expect = XTERM; | |
a0d0e21e | 1921 | force_next(WORD); |
3280af22 | 1922 | PL_bufptr = s; |
a0d0e21e LW |
1923 | return *s == '(' ? FUNCMETH : METHOD; |
1924 | } | |
1925 | } | |
1926 | return 0; | |
1927 | } | |
1928 | ||
ffb4593c NT |
1929 | /* |
1930 | * S_incl_perldb | |
1931 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1932 | * is set, it will return the contents of that, otherwise a | |
1933 | * compile-time require of perl5db.pl. | |
1934 | */ | |
1935 | ||
76e3520e | 1936 | STATIC char* |
cea2e8a9 | 1937 | S_incl_perldb(pTHX) |
a0d0e21e | 1938 | { |
3280af22 | 1939 | if (PL_perldb) { |
76e3520e | 1940 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1941 | |
1942 | if (pdb) | |
1943 | return pdb; | |
91487cfc | 1944 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1945 | return "BEGIN { require 'perl5db.pl' }"; |
1946 | } | |
1947 | return ""; | |
1948 | } | |
1949 | ||
1950 | ||
16d20bd9 | 1951 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 1952 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
1953 | * Note that the filter function only applies to the current source file |
1954 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1955 | * | |
1956 | * The datasv parameter (which may be NULL) can be used to pass | |
1957 | * private data to this instance of the filter. The filter function | |
1958 | * can recover the SV using the FILTER_DATA macro and use it to | |
1959 | * store private buffers and state information. | |
1960 | * | |
1961 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 1962 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 1963 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
1964 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1965 | * private use must be set using malloc'd pointers. | |
1966 | */ | |
16d20bd9 AD |
1967 | |
1968 | SV * | |
864dbfa3 | 1969 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1970 | { |
f4c556ac GS |
1971 | if (!funcp) |
1972 | return Nullsv; | |
1973 | ||
3280af22 NIS |
1974 | if (!PL_rsfp_filters) |
1975 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1976 | if (!datasv) |
8c52afec | 1977 | datasv = NEWSV(255,0); |
16d20bd9 | 1978 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1979 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 1980 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 1981 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 1982 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 1983 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
1984 | av_unshift(PL_rsfp_filters, 1); |
1985 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1986 | return(datasv); |
1987 | } | |
4e553d73 | 1988 | |
16d20bd9 AD |
1989 | |
1990 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1991 | void |
864dbfa3 | 1992 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1993 | { |
e0c19803 | 1994 | SV *datasv; |
fe5a182c | 1995 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 1996 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1997 | return; |
1998 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 1999 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2000 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2001 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2002 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2003 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2004 | |
16d20bd9 AD |
2005 | return; |
2006 | } | |
2007 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2008 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2009 | } |
2010 | ||
2011 | ||
2012 | /* Invoke the n'th filter function for the current rsfp. */ | |
2013 | I32 | |
864dbfa3 | 2014 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
4e553d73 NIS |
2015 | |
2016 | ||
8ac85365 | 2017 | /* 0 = read one text line */ |
a0d0e21e | 2018 | { |
16d20bd9 AD |
2019 | filter_t funcp; |
2020 | SV *datasv = NULL; | |
e50aee73 | 2021 | |
3280af22 | 2022 | if (!PL_rsfp_filters) |
16d20bd9 | 2023 | return -1; |
3280af22 | 2024 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
2025 | /* Provide a default input filter to make life easy. */ |
2026 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2027 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2028 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2029 | if (maxlen) { |
16d20bd9 AD |
2030 | /* Want a block */ |
2031 | int len ; | |
2032 | int old_len = SvCUR(buf_sv) ; | |
2033 | ||
2034 | /* ensure buf_sv is large enough */ | |
2035 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
2036 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2037 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2038 | return -1; /* error */ |
2039 | else | |
2040 | return 0 ; /* end of file */ | |
2041 | } | |
16d20bd9 AD |
2042 | SvCUR_set(buf_sv, old_len + len) ; |
2043 | } else { | |
2044 | /* Want a line */ | |
3280af22 NIS |
2045 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2046 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2047 | return -1; /* error */ |
2048 | else | |
2049 | return 0 ; /* end of file */ | |
2050 | } | |
16d20bd9 AD |
2051 | } |
2052 | return SvCUR(buf_sv); | |
2053 | } | |
2054 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 2055 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
2056 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2057 | "filter_read %d: skipped (filter deleted)\n", | |
2058 | idx)); | |
16d20bd9 AD |
2059 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2060 | } | |
2061 | /* Get function pointer hidden within datasv */ | |
4755096e | 2062 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2063 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2064 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2065 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2066 | /* Call function. The function is expected to */ |
2067 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2068 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2069 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2070 | } |
2071 | ||
76e3520e | 2072 | STATIC char * |
cea2e8a9 | 2073 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2074 | { |
c39cd008 | 2075 | #ifdef PERL_CR_FILTER |
3280af22 | 2076 | if (!PL_rsfp_filters) { |
c39cd008 | 2077 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2078 | } |
2079 | #endif | |
3280af22 | 2080 | if (PL_rsfp_filters) { |
16d20bd9 | 2081 | |
55497cff | 2082 | if (!append) |
2083 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2084 | if (FILTER_READ(0, sv, 0) > 0) |
2085 | return ( SvPVX(sv) ) ; | |
2086 | else | |
2087 | return Nullch ; | |
2088 | } | |
9d116dd7 | 2089 | else |
fd049845 | 2090 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2091 | } |
2092 | ||
01ec43d0 GS |
2093 | STATIC HV * |
2094 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2095 | { |
2096 | GV *gv; | |
2097 | ||
01ec43d0 | 2098 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2099 | return PL_curstash; |
2100 | ||
2101 | if (len > 2 && | |
2102 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2103 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2104 | { | |
2105 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2106 | } |
2107 | ||
2108 | /* use constant CLASS => 'MyClass' */ | |
2109 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2110 | SV *sv; | |
2111 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2112 | pkgname = SvPV_nolen(sv); | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | return gv_stashpv(pkgname, FALSE); | |
2117 | } | |
a0d0e21e | 2118 | |
748a9306 LW |
2119 | #ifdef DEBUGGING |
2120 | static char* exp_name[] = | |
09bef843 SB |
2121 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
2122 | "ATTRTERM", "TERMBLOCK" | |
2123 | }; | |
748a9306 | 2124 | #endif |
463ee0b2 | 2125 | |
02aa26ce NT |
2126 | /* |
2127 | yylex | |
2128 | ||
2129 | Works out what to call the token just pulled out of the input | |
2130 | stream. The yacc parser takes care of taking the ops we return and | |
2131 | stitching them into a tree. | |
2132 | ||
2133 | Returns: | |
2134 | PRIVATEREF | |
2135 | ||
2136 | Structure: | |
2137 | if read an identifier | |
2138 | if we're in a my declaration | |
2139 | croak if they tried to say my($foo::bar) | |
2140 | build the ops for a my() declaration | |
2141 | if it's an access to a my() variable | |
2142 | are we in a sort block? | |
2143 | croak if my($a); $a <=> $b | |
2144 | build ops for access to a my() variable | |
2145 | if in a dq string, and they've said @foo and we can't find @foo | |
2146 | croak | |
2147 | build ops for a bareword | |
2148 | if we already built the token before, use it. | |
2149 | */ | |
2150 | ||
dba4d153 | 2151 | #ifdef USE_PURE_BISON |
864dbfa3 | 2152 | int |
dba4d153 | 2153 | Perl_yylex_r(pTHX_ YYSTYPE *lvalp, int *lcharp) |
378cc40b | 2154 | { |
20141f0e IRC |
2155 | int r; |
2156 | ||
6f202aea | 2157 | yyactlevel++; |
20141f0e IRC |
2158 | yylval_pointer[yyactlevel] = lvalp; |
2159 | yychar_pointer[yyactlevel] = lcharp; | |
b73d6f50 IRC |
2160 | if (yyactlevel >= YYMAXLEVEL) |
2161 | Perl_croak(aTHX_ "panic: YYMAXLEVEL"); | |
20141f0e | 2162 | |
dba4d153 | 2163 | r = Perl_yylex(aTHX); |
20141f0e | 2164 | |
d8ae6756 IRC |
2165 | if (yyactlevel > 0) |
2166 | yyactlevel--; | |
20141f0e IRC |
2167 | |
2168 | return r; | |
2169 | } | |
dba4d153 | 2170 | #endif |
20141f0e | 2171 | |
dba4d153 JH |
2172 | #ifdef __SC__ |
2173 | #pragma segment Perl_yylex | |
2174 | #endif | |
dba4d153 | 2175 | int |
dba4d153 | 2176 | Perl_yylex(pTHX) |
20141f0e | 2177 | { |
79072805 | 2178 | register char *s; |
378cc40b | 2179 | register char *d; |
79072805 | 2180 | register I32 tmp; |
463ee0b2 | 2181 | STRLEN len; |
161b471a NIS |
2182 | GV *gv = Nullgv; |
2183 | GV **gvp = 0; | |
aa7440fb | 2184 | bool bof = FALSE; |
a687059c | 2185 | |
02aa26ce | 2186 | /* check if there's an identifier for us to look at */ |
8eceec63 | 2187 | if (PL_pending_ident) |
e930465f | 2188 | return S_pending_ident(aTHX); |
bbce6d69 | 2189 | |
02aa26ce NT |
2190 | /* no identifier pending identification */ |
2191 | ||
3280af22 | 2192 | switch (PL_lex_state) { |
79072805 LW |
2193 | #ifdef COMMENTARY |
2194 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2195 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2196 | break; | |
2197 | #endif | |
2198 | ||
09bef843 | 2199 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2200 | case LEX_KNOWNEXT: |
3280af22 NIS |
2201 | PL_nexttoke--; |
2202 | yylval = PL_nextval[PL_nexttoke]; | |
2203 | if (!PL_nexttoke) { | |
2204 | PL_lex_state = PL_lex_defer; | |
2205 | PL_expect = PL_lex_expect; | |
2206 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2207 | } |
607df283 | 2208 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2209 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2210 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2211 | |
3280af22 | 2212 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2213 | |
02aa26ce | 2214 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2215 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2216 | */ |
79072805 LW |
2217 | case LEX_INTERPCASEMOD: |
2218 | #ifdef DEBUGGING | |
3280af22 | 2219 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2220 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2221 | #endif |
02aa26ce | 2222 | /* handle \E or end of string */ |
3280af22 | 2223 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2224 | char oldmod; |
02aa26ce NT |
2225 | |
2226 | /* if at a \E */ | |
3280af22 NIS |
2227 | if (PL_lex_casemods) { |
2228 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2229 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2230 | |
3280af22 NIS |
2231 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2232 | PL_bufptr += 2; | |
2233 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2234 | } |
79072805 LW |
2235 | return ')'; |
2236 | } | |
3280af22 NIS |
2237 | if (PL_bufptr != PL_bufend) |
2238 | PL_bufptr += 2; | |
2239 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2240 | return yylex(); |
79072805 LW |
2241 | } |
2242 | else { | |
607df283 | 2243 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2244 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2245 | s = PL_bufptr + 1; |
79072805 LW |
2246 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2247 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2248 | if (strchr("LU", *s) && |
3280af22 | 2249 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2250 | { |
3280af22 | 2251 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2252 | return ')'; |
2253 | } | |
3280af22 NIS |
2254 | if (PL_lex_casemods > 10) { |
2255 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2256 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2257 | SAVEFREEPV(newlb); |
3280af22 | 2258 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2259 | } |
2260 | } | |
3280af22 NIS |
2261 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2262 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2263 | PL_lex_state = LEX_INTERPCONCAT; | |
2264 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2265 | force_next('('); |
2266 | if (*s == 'l') | |
3280af22 | 2267 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2268 | else if (*s == 'u') |
3280af22 | 2269 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2270 | else if (*s == 'L') |
3280af22 | 2271 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2272 | else if (*s == 'U') |
3280af22 | 2273 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2274 | else if (*s == 'Q') |
3280af22 | 2275 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2276 | else |
cea2e8a9 | 2277 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2278 | PL_bufptr = s + 1; |
79072805 | 2279 | force_next(FUNC); |
3280af22 NIS |
2280 | if (PL_lex_starts) { |
2281 | s = PL_bufptr; | |
2282 | PL_lex_starts = 0; | |
79072805 LW |
2283 | Aop(OP_CONCAT); |
2284 | } | |
2285 | else | |
cea2e8a9 | 2286 | return yylex(); |
79072805 LW |
2287 | } |
2288 | ||
55497cff | 2289 | case LEX_INTERPPUSH: |
2290 | return sublex_push(); | |
2291 | ||
79072805 | 2292 | case LEX_INTERPSTART: |
3280af22 | 2293 | if (PL_bufptr == PL_bufend) |
79072805 | 2294 | return sublex_done(); |
607df283 | 2295 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2296 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2297 | PL_expect = XTERM; |
2298 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2299 | PL_lex_state = LEX_INTERPNORMAL; | |
2300 | if (PL_lex_dojoin) { | |
2301 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2302 | force_next(','); |
4d1ff10f | 2303 | #ifdef USE_5005THREADS |
533c011a NIS |
2304 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2305 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2306 | force_next(PRIVATEREF); |
2307 | #else | |
a0d0e21e | 2308 | force_ident("\"", '$'); |
4d1ff10f | 2309 | #endif /* USE_5005THREADS */ |
3280af22 | 2310 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2311 | force_next('$'); |
3280af22 | 2312 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2313 | force_next('('); |
3280af22 | 2314 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2315 | force_next(FUNC); |
2316 | } | |
3280af22 NIS |
2317 | if (PL_lex_starts++) { |
2318 | s = PL_bufptr; | |
79072805 LW |
2319 | Aop(OP_CONCAT); |
2320 | } | |
cea2e8a9 | 2321 | return yylex(); |
79072805 LW |
2322 | |
2323 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2324 | if (intuit_more(PL_bufptr)) { |
2325 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2326 | break; |
2327 | } | |
2328 | /* FALL THROUGH */ | |
2329 | ||
2330 | case LEX_INTERPEND: | |
3280af22 NIS |
2331 | if (PL_lex_dojoin) { |
2332 | PL_lex_dojoin = FALSE; | |
2333 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2334 | return ')'; |
2335 | } | |
43a16006 | 2336 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2337 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2338 | { |
e9fa98b2 | 2339 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2340 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2341 | PL_lex_repl = Nullsv; |
2342 | } | |
79072805 LW |
2343 | /* FALLTHROUGH */ |
2344 | case LEX_INTERPCONCAT: | |
2345 | #ifdef DEBUGGING | |
3280af22 | 2346 | if (PL_lex_brackets) |
cea2e8a9 | 2347 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2348 | #endif |
3280af22 | 2349 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2350 | return sublex_done(); |
2351 | ||
3280af22 NIS |
2352 | if (SvIVX(PL_linestr) == '\'') { |
2353 | SV *sv = newSVsv(PL_linestr); | |
2354 | if (!PL_lex_inpat) | |
76e3520e | 2355 | sv = tokeq(sv); |
3280af22 | 2356 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2357 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2358 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2359 | s = PL_bufend; |
79072805 LW |
2360 | } |
2361 | else { | |
3280af22 | 2362 | s = scan_const(PL_bufptr); |
79072805 | 2363 | if (*s == '\\') |
3280af22 | 2364 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2365 | else |
3280af22 | 2366 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2367 | } |
2368 | ||
3280af22 NIS |
2369 | if (s != PL_bufptr) { |
2370 | PL_nextval[PL_nexttoke] = yylval; | |
2371 | PL_expect = XTERM; | |
79072805 | 2372 | force_next(THING); |
3280af22 | 2373 | if (PL_lex_starts++) |
79072805 LW |
2374 | Aop(OP_CONCAT); |
2375 | else { | |
3280af22 | 2376 | PL_bufptr = s; |
cea2e8a9 | 2377 | return yylex(); |
79072805 LW |
2378 | } |
2379 | } | |
2380 | ||
cea2e8a9 | 2381 | return yylex(); |
a0d0e21e | 2382 | case LEX_FORMLINE: |
3280af22 NIS |
2383 | PL_lex_state = LEX_NORMAL; |
2384 | s = scan_formline(PL_bufptr); | |
2385 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2386 | goto rightbracket; |
2387 | OPERATOR(';'); | |
79072805 LW |
2388 | } |
2389 | ||
3280af22 NIS |
2390 | s = PL_bufptr; |
2391 | PL_oldoldbufptr = PL_oldbufptr; | |
2392 | PL_oldbufptr = s; | |
607df283 | 2393 | DEBUG_T( { |
bf49b057 GS |
2394 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2395 | exp_name[PL_expect], s); | |
5f80b19c | 2396 | } ); |
463ee0b2 LW |
2397 | |
2398 | retry: | |
378cc40b LW |
2399 | switch (*s) { |
2400 | default: | |
7e2040f0 | 2401 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2402 | goto keylookup; |
cea2e8a9 | 2403 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2404 | case 4: |
2405 | case 26: | |
2406 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2407 | case 0: |
3280af22 NIS |
2408 | if (!PL_rsfp) { |
2409 | PL_last_uni = 0; | |
2410 | PL_last_lop = 0; | |
2411 | if (PL_lex_brackets) | |
d98d5fff | 2412 | yyerror("Missing right curly or square bracket"); |
4e553d73 | 2413 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2414 | "### Tokener got EOF\n"); |
5f80b19c | 2415 | } ); |
79072805 | 2416 | TOKEN(0); |
463ee0b2 | 2417 | } |
3280af22 | 2418 | if (s++ < PL_bufend) |
a687059c | 2419 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2420 | PL_last_uni = 0; |
2421 | PL_last_lop = 0; | |
2422 | if (!PL_in_eval && !PL_preambled) { | |
2423 | PL_preambled = TRUE; | |
2424 | sv_setpv(PL_linestr,incl_perldb()); | |
2425 | if (SvCUR(PL_linestr)) | |
2426 | sv_catpv(PL_linestr,";"); | |
2427 | if (PL_preambleav){ | |
2428 | while(AvFILLp(PL_preambleav) >= 0) { | |
2429 | SV *tmpsv = av_shift(PL_preambleav); | |
2430 | sv_catsv(PL_linestr, tmpsv); | |
2431 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2432 | sv_free(tmpsv); |
2433 | } | |
3280af22 NIS |
2434 | sv_free((SV*)PL_preambleav); |
2435 | PL_preambleav = NULL; | |
91b7def8 | 2436 | } |
3280af22 NIS |
2437 | if (PL_minus_n || PL_minus_p) { |
2438 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2439 | if (PL_minus_l) | |
2440 | sv_catpv(PL_linestr,"chomp;"); | |
2441 | if (PL_minus_a) { | |
3280af22 NIS |
2442 | if (PL_minus_F) { |
2443 | if (strchr("/'\"", *PL_splitstr) | |
2444 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
3db68c4c | 2445 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2446 | else { |
2447 | char delim; | |
2448 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2449 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2450 | delim = *s; |
75c72d73 | 2451 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2452 | "q" + (delim == '\''), delim); |
3280af22 | 2453 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2454 | if (*s == '\\') |
3280af22 NIS |
2455 | sv_catpvn(PL_linestr, "\\", 1); |
2456 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2457 | } |
cea2e8a9 | 2458 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2459 | } |
2304df62 AD |
2460 | } |
2461 | else | |
75c72d73 | 2462 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2463 | } |
79072805 | 2464 | } |
3280af22 NIS |
2465 | sv_catpv(PL_linestr, "\n"); |
2466 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2467 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2468 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2469 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2470 | SV *sv = NEWSV(85,0); |
2471 | ||
2472 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2473 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2474 | (void)SvIOK_on(sv); |
2475 | SvIVX(sv) = 0; | |
57843af0 | 2476 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2477 | } |
79072805 | 2478 | goto retry; |
a687059c | 2479 | } |
e929a76b | 2480 | do { |
aa7440fb | 2481 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2482 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2483 | fake_eof: | |
2484 | if (PL_rsfp) { | |
2485 | if (PL_preprocess && !PL_in_eval) | |
2486 | (void)PerlProc_pclose(PL_rsfp); | |
2487 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2488 | PerlIO_clearerr(PL_rsfp); | |
2489 | else | |
2490 | (void)PerlIO_close(PL_rsfp); | |
2491 | PL_rsfp = Nullfp; | |
2492 | PL_doextract = FALSE; | |
2493 | } | |
2494 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2495 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2496 | sv_catpv(PL_linestr,";}"); | |
2497 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2498 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2499 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2500 | PL_minus_n = PL_minus_p = 0; |
2501 | goto retry; | |
2502 | } | |
2503 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2504 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2505 | sv_setpv(PL_linestr,""); |
2506 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2507 | } | |
2508 | /* if it looks like the start of a BOM, check if it in fact is */ | |
2509 | else if (bof && (!*s || *(U8*)s == 0xEF || *(U8*)s >= 0xFE)) { | |
226017aa | 2510 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2511 | # ifdef __GNU_LIBRARY__ |
2512 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2513 | # define FTELL_FOR_PIPE_IS_BROKEN |
2514 | # endif | |
e3f494f1 JH |
2515 | # else |
2516 | # ifdef __GLIBC__ | |
2517 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2518 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2519 | # endif | |
2520 | # endif | |
226017aa DD |
2521 | # endif |
2522 | #endif | |
2523 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2524 | /* This loses the possibility to detect the bof | |
2525 | * situation on perl -P when the libc5 is being used. | |
2526 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2527 | */ | |
2528 | if (!PL_preprocess) | |
7e28d3af | 2529 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2530 | #else |
7e28d3af | 2531 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2532 | #endif |
7e28d3af | 2533 | if (bof) { |
3280af22 | 2534 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2535 | s = swallow_bom((U8*)s); |
e929a76b | 2536 | } |
378cc40b | 2537 | } |
3280af22 | 2538 | if (PL_doextract) { |
a0d0e21e | 2539 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2540 | PL_doextract = FALSE; |
a0d0e21e LW |
2541 | |
2542 | /* Incest with pod. */ | |
2543 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2544 | sv_setpv(PL_linestr, ""); |
2545 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2546 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2547 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2548 | PL_doextract = FALSE; |
a0d0e21e | 2549 | } |
4e553d73 | 2550 | } |
463ee0b2 | 2551 | incline(s); |
3280af22 NIS |
2552 | } while (PL_doextract); |
2553 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2554 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2555 | SV *sv = NEWSV(85,0); |
a687059c | 2556 | |
93a17b20 | 2557 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2558 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2559 | (void)SvIOK_on(sv); |
2560 | SvIVX(sv) = 0; | |
57843af0 | 2561 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2562 | } |
3280af22 | 2563 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2564 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2565 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2566 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2567 | s++; |
a0d0e21e | 2568 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2569 | s++; |
44a8e56a | 2570 | d = Nullch; |
3280af22 | 2571 | if (!PL_in_eval) { |
44a8e56a | 2572 | if (*s == '#' && *(s+1) == '!') |
2573 | d = s + 2; | |
2574 | #ifdef ALTERNATE_SHEBANG | |
2575 | else { | |
2576 | static char as[] = ALTERNATE_SHEBANG; | |
2577 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2578 | d = s + (sizeof(as) - 1); | |
2579 | } | |
2580 | #endif /* ALTERNATE_SHEBANG */ | |
2581 | } | |
2582 | if (d) { | |
b8378b72 | 2583 | char *ipath; |
774d564b | 2584 | char *ipathend; |
b8378b72 | 2585 | |
774d564b | 2586 | while (isSPACE(*d)) |
b8378b72 CS |
2587 | d++; |
2588 | ipath = d; | |
774d564b | 2589 | while (*d && !isSPACE(*d)) |
2590 | d++; | |
2591 | ipathend = d; | |
2592 | ||
2593 | #ifdef ARG_ZERO_IS_SCRIPT | |
2594 | if (ipathend > ipath) { | |
2595 | /* | |
2596 | * HP-UX (at least) sets argv[0] to the script name, | |
2597 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2598 | * at least, set argv[0] to the basename of the Perl | |
2599 | * interpreter. So, having found "#!", we'll set it right. | |
2600 | */ | |
ee2f7564 | 2601 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2602 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2603 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2604 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2605 | SvSETMAGIC(x); |
2606 | } | |
774d564b | 2607 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2608 | } |
774d564b | 2609 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2610 | |
2611 | /* | |
2612 | * Look for options. | |
2613 | */ | |
748a9306 | 2614 | d = instr(s,"perl -"); |
84e30d1a | 2615 | if (!d) { |
748a9306 | 2616 | d = instr(s,"perl"); |
84e30d1a GS |
2617 | #if defined(DOSISH) |
2618 | /* avoid getting into infinite loops when shebang | |
2619 | * line contains "Perl" rather than "perl" */ | |
2620 | if (!d) { | |
2621 | for (d = ipathend-4; d >= ipath; --d) { | |
2622 | if ((*d == 'p' || *d == 'P') | |
2623 | && !ibcmp(d, "perl", 4)) | |
2624 | { | |
2625 | break; | |
2626 | } | |
2627 | } | |
2628 | if (d < ipath) | |
2629 | d = Nullch; | |
2630 | } | |
2631 | #endif | |
2632 | } | |
44a8e56a | 2633 | #ifdef ALTERNATE_SHEBANG |
2634 | /* | |
2635 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2636 | * character that can be part of a Perl expression, then if | |
2637 | * we see it but not "perl", we're probably looking at the | |
2638 | * start of Perl code, not a request to hand off to some | |
2639 | * other interpreter. Similarly, if "perl" is there, but | |
2640 | * not in the first 'word' of the line, we assume the line | |
2641 | * contains the start of the Perl program. | |
44a8e56a | 2642 | */ |
2643 | if (d && *s != '#') { | |
774d564b | 2644 | char *c = ipath; |
44a8e56a | 2645 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2646 | c++; | |
2647 | if (c < d) | |
2648 | d = Nullch; /* "perl" not in first word; ignore */ | |
2649 | else | |
2650 | *s = '#'; /* Don't try to parse shebang line */ | |
2651 | } | |
774d564b | 2652 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2653 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2654 | if (!d && |
44a8e56a | 2655 | *s == '#' && |
774d564b | 2656 | ipathend > ipath && |
3280af22 | 2657 | !PL_minus_c && |
748a9306 | 2658 | !instr(s,"indir") && |
3280af22 | 2659 | instr(PL_origargv[0],"perl")) |
748a9306 | 2660 | { |
9f68db38 | 2661 | char **newargv; |
9f68db38 | 2662 | |
774d564b | 2663 | *ipathend = '\0'; |
2664 | s = ipathend + 1; | |
3280af22 | 2665 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2666 | s++; |
3280af22 NIS |
2667 | if (s < PL_bufend) { |
2668 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2669 | newargv[1] = s; |
3280af22 | 2670 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2671 | s++; |
2672 | *s = '\0'; | |
3280af22 | 2673 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2674 | } |
2675 | else | |
3280af22 | 2676 | newargv = PL_origargv; |
774d564b | 2677 | newargv[0] = ipath; |
b4748376 | 2678 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
cea2e8a9 | 2679 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2680 | } |
bf4acbe4 | 2681 | #endif |
748a9306 | 2682 | if (d) { |
3280af22 NIS |
2683 | U32 oldpdb = PL_perldb; |
2684 | bool oldn = PL_minus_n; | |
2685 | bool oldp = PL_minus_p; | |
748a9306 LW |
2686 | |
2687 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2688 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2689 | |
2690 | if (*d++ == '-') { | |
a11ec5a9 | 2691 | bool switches_done = PL_doswitches; |
8cc95fdb | 2692 | do { |
2693 | if (*d == 'M' || *d == 'm') { | |
2694 | char *m = d; | |
2695 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2696 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2697 | (int)(d - m), m); |
2698 | } | |
2699 | d = moreswitches(d); | |
2700 | } while (d); | |
155aba94 GS |
2701 | if ((PERLDB_LINE && !oldpdb) || |
2702 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2703 | /* if we have already added "LINE: while (<>) {", |
2704 | we must not do it again */ | |
748a9306 | 2705 | { |
3280af22 NIS |
2706 | sv_setpv(PL_linestr, ""); |
2707 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2708 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2709 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2710 | PL_preambled = FALSE; |
84902520 | 2711 | if (PERLDB_LINE) |
3280af22 | 2712 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2713 | goto retry; |
2714 | } | |
a11ec5a9 RGS |
2715 | if (PL_doswitches && !switches_done) { |
2716 | int argc = PL_origargc; | |
2717 | char **argv = PL_origargv; | |
2718 | do { | |
2719 | argc--,argv++; | |
2720 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2721 | init_argv_symbols(argc,argv); | |
2722 | } | |
a0d0e21e | 2723 | } |
79072805 | 2724 | } |
9f68db38 | 2725 | } |
79072805 | 2726 | } |
3280af22 NIS |
2727 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2728 | PL_bufptr = s; | |
2729 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2730 | return yylex(); |
ae986130 | 2731 | } |
378cc40b | 2732 | goto retry; |
4fdae800 | 2733 | case '\r': |
6a27c188 | 2734 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2735 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2736 | Perl_croak(aTHX_ |
cc507455 | 2737 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2738 | #endif |
4fdae800 | 2739 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2740 | #ifdef MACOS_TRADITIONAL |
2741 | case '\312': | |
2742 | #endif | |
378cc40b LW |
2743 | s++; |
2744 | goto retry; | |
378cc40b | 2745 | case '#': |
e929a76b | 2746 | case '\n': |
3280af22 | 2747 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2748 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2749 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2750 | CopLINE_dec(PL_curcop); | |
2751 | incline(s); | |
2752 | } | |
3280af22 | 2753 | d = PL_bufend; |
a687059c | 2754 | while (s < d && *s != '\n') |
378cc40b | 2755 | s++; |
0f85fab0 | 2756 | if (s < d) |
378cc40b | 2757 | s++; |
78c267c1 | 2758 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2759 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2760 | incline(s); |
3280af22 NIS |
2761 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2762 | PL_bufptr = s; | |
2763 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2764 | return yylex(); |
a687059c | 2765 | } |
378cc40b | 2766 | } |
a687059c | 2767 | else { |
378cc40b | 2768 | *s = '\0'; |
3280af22 | 2769 | PL_bufend = s; |
a687059c | 2770 | } |
378cc40b LW |
2771 | goto retry; |
2772 | case '-': | |
79072805 | 2773 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2774 | I32 ftst = 0; |
2775 | ||
378cc40b | 2776 | s++; |
3280af22 | 2777 | PL_bufptr = s; |
748a9306 LW |
2778 | tmp = *s++; |
2779 | ||
bf4acbe4 | 2780 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2781 | s++; |
2782 | ||
2783 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2784 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2785 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2786 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2787 | } ); |
748a9306 LW |
2788 | OPERATOR('-'); /* unary minus */ |
2789 | } | |
3280af22 | 2790 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2791 | switch (tmp) { |
e5edeb50 JH |
2792 | case 'r': ftst = OP_FTEREAD; break; |
2793 | case 'w': ftst = OP_FTEWRITE; break; | |
2794 | case 'x': ftst = OP_FTEEXEC; break; | |
2795 | case 'o': ftst = OP_FTEOWNED; break; | |
2796 | case 'R': ftst = OP_FTRREAD; break; | |
2797 | case 'W': ftst = OP_FTRWRITE; break; | |
2798 | case 'X': ftst = OP_FTREXEC; break; | |
2799 | case 'O': ftst = OP_FTROWNED; break; | |
2800 | case 'e': ftst = OP_FTIS; break; | |
2801 | case 'z': ftst = OP_FTZERO; break; | |
2802 | case 's': ftst = OP_FTSIZE; break; | |
2803 | case 'f': ftst = OP_FTFILE; break; | |
2804 | case 'd': ftst = OP_FTDIR; break; | |
2805 | case 'l': ftst = OP_FTLINK; break; | |
2806 | case 'p': ftst = OP_FTPIPE; break; | |
2807 | case 'S': ftst = OP_FTSOCK; break; | |
2808 | case 'u': ftst = OP_FTSUID; break; | |
2809 | case 'g': ftst = OP_FTSGID; break; | |
2810 | case 'k': ftst = OP_FTSVTX; break; | |
2811 | case 'b': ftst = OP_FTBLK; break; | |
2812 | case 'c': ftst = OP_FTCHR; break; | |
2813 | case 't': ftst = OP_FTTTY; break; | |
2814 | case 'T': ftst = OP_FTTEXT; break; | |
2815 | case 'B': ftst = OP_FTBINARY; break; | |
2816 | case 'M': case 'A': case 'C': | |
2817 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2818 | switch (tmp) { | |
2819 | case 'M': ftst = OP_FTMTIME; break; | |
2820 | case 'A': ftst = OP_FTATIME; break; | |
2821 | case 'C': ftst = OP_FTCTIME; break; | |
2822 | default: break; | |
2823 | } | |
2824 | break; | |
378cc40b | 2825 | default: |
378cc40b LW |
2826 | break; |
2827 | } | |
e5edeb50 JH |
2828 | if (ftst) { |
2829 | PL_last_lop_op = ftst; | |
4e553d73 | 2830 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 2831 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 2832 | } ); |
e5edeb50 JH |
2833 | FTST(ftst); |
2834 | } | |
2835 | else { | |
2836 | /* Assume it was a minus followed by a one-letter named | |
2837 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 2838 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 RB |
2839 | "### %c looked like a file test but was not\n", |
2840 | (int)ftst); | |
5f80b19c | 2841 | } ); |
e5edeb50 JH |
2842 | s -= 2; |
2843 | } | |
378cc40b | 2844 | } |
a687059c LW |
2845 | tmp = *s++; |
2846 | if (*s == tmp) { | |
2847 | s++; | |
3280af22 | 2848 | if (PL_expect == XOPERATOR) |
79072805 LW |
2849 | TERM(POSTDEC); |
2850 | else | |
2851 | OPERATOR(PREDEC); | |
2852 | } | |
2853 | else if (*s == '>') { | |
2854 | s++; | |
2855 | s = skipspace(s); | |
7e2040f0 | 2856 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2857 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2858 | TOKEN(ARROW); |
79072805 | 2859 | } |
748a9306 LW |
2860 | else if (*s == '$') |
2861 | OPERATOR(ARROW); | |
463ee0b2 | 2862 | else |
748a9306 | 2863 | TERM(ARROW); |
a687059c | 2864 | } |
3280af22 | 2865 | if (PL_expect == XOPERATOR) |
79072805 LW |
2866 | Aop(OP_SUBTRACT); |
2867 | else { | |
3280af22 | 2868 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2869 | check_uni(); |
79072805 | 2870 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2871 | } |
79072805 | 2872 | |
378cc40b | 2873 | case '+': |
a687059c LW |
2874 | tmp = *s++; |
2875 | if (*s == tmp) { | |
378cc40b | 2876 | s++; |
3280af22 | 2877 | if (PL_expect == XOPERATOR) |
79072805 LW |
2878 | TERM(POSTINC); |
2879 | else | |
2880 | OPERATOR(PREINC); | |
378cc40b | 2881 | } |
3280af22 | 2882 | if (PL_expect == XOPERATOR) |
79072805 LW |
2883 | Aop(OP_ADD); |
2884 | else { | |
3280af22 | 2885 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2886 | check_uni(); |
a687059c | 2887 | OPERATOR('+'); |
2f3197b3 | 2888 | } |
a687059c | 2889 | |
378cc40b | 2890 | case '*': |
3280af22 NIS |
2891 | if (PL_expect != XOPERATOR) { |
2892 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2893 | PL_expect = XOPERATOR; | |
2894 | force_ident(PL_tokenbuf, '*'); | |
2895 | if (!*PL_tokenbuf) | |
a0d0e21e | 2896 | PREREF('*'); |
79072805 | 2897 | TERM('*'); |
a687059c | 2898 | } |
79072805 LW |
2899 | s++; |
2900 | if (*s == '*') { | |
a687059c | 2901 | s++; |
79072805 | 2902 | PWop(OP_POW); |
a687059c | 2903 | } |
79072805 LW |
2904 | Mop(OP_MULTIPLY); |
2905 | ||
378cc40b | 2906 | case '%': |
3280af22 | 2907 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2908 | ++s; |
2909 | Mop(OP_MODULO); | |
a687059c | 2910 | } |
3280af22 NIS |
2911 | PL_tokenbuf[0] = '%'; |
2912 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2913 | if (!PL_tokenbuf[1]) { | |
2914 | if (s == PL_bufend) | |
bbce6d69 | 2915 | yyerror("Final % should be \\% or %name"); |
2916 | PREREF('%'); | |
a687059c | 2917 | } |
3280af22 | 2918 | PL_pending_ident = '%'; |
bbce6d69 | 2919 | TERM('%'); |
a687059c | 2920 | |
378cc40b | 2921 | case '^': |
79072805 | 2922 | s++; |
a0d0e21e | 2923 | BOop(OP_BIT_XOR); |
79072805 | 2924 | case '[': |
3280af22 | 2925 | PL_lex_brackets++; |
79072805 | 2926 | /* FALL THROUGH */ |
378cc40b | 2927 | case '~': |
378cc40b | 2928 | case ',': |
378cc40b LW |
2929 | tmp = *s++; |
2930 | OPERATOR(tmp); | |
a0d0e21e LW |
2931 | case ':': |
2932 | if (s[1] == ':') { | |
2933 | len = 0; | |
2934 | goto just_a_word; | |
2935 | } | |
2936 | s++; | |
09bef843 SB |
2937 | switch (PL_expect) { |
2938 | OP *attrs; | |
2939 | case XOPERATOR: | |
2940 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2941 | break; | |
2942 | PL_bufptr = s; /* update in case we back off */ | |
2943 | goto grabattrs; | |
2944 | case XATTRBLOCK: | |
2945 | PL_expect = XBLOCK; | |
2946 | goto grabattrs; | |
2947 | case XATTRTERM: | |
2948 | PL_expect = XTERMBLOCK; | |
2949 | grabattrs: | |
2950 | s = skipspace(s); | |
2951 | attrs = Nullop; | |
7e2040f0 | 2952 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2953 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2954 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2955 | if (tmp < 0) tmp = -tmp; | |
2956 | switch (tmp) { | |
2957 | case KEY_or: | |
2958 | case KEY_and: | |
2959 | case KEY_for: | |
2960 | case KEY_unless: | |
2961 | case KEY_if: | |
2962 | case KEY_while: | |
2963 | case KEY_until: | |
2964 | goto got_attrs; | |
2965 | default: | |
2966 | break; | |
2967 | } | |
2968 | } | |
09bef843 SB |
2969 | if (*d == '(') { |
2970 | d = scan_str(d,TRUE,TRUE); | |
2971 | if (!d) { | |
09bef843 SB |
2972 | /* MUST advance bufptr here to avoid bogus |
2973 | "at end of line" context messages from yyerror(). | |
2974 | */ | |
2975 | PL_bufptr = s + len; | |
2976 | yyerror("Unterminated attribute parameter in attribute list"); | |
2977 | if (attrs) | |
2978 | op_free(attrs); | |
2979 | return 0; /* EOF indicator */ | |
2980 | } | |
2981 | } | |
2982 | if (PL_lex_stuff) { | |
2983 | SV *sv = newSVpvn(s, len); | |
2984 | sv_catsv(sv, PL_lex_stuff); | |
2985 | attrs = append_elem(OP_LIST, attrs, | |
2986 | newSVOP(OP_CONST, 0, sv)); | |
2987 | SvREFCNT_dec(PL_lex_stuff); | |
2988 | PL_lex_stuff = Nullsv; | |
2989 | } | |
2990 | else { | |
78f9721b SM |
2991 | if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
2992 | CvLVALUE_on(PL_compcv); | |
2993 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
2994 | CvLOCKED_on(PL_compcv); | |
2995 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
2996 | CvMETHOD_on(PL_compcv); | |
87ecf892 | 2997 | #ifdef USE_ITHREADS |
c8a3bf85 | 2998 | else if (PL_in_my == KEY_our && len == 6 && strnEQ(s, "unique", len)) |
7fb37951 | 2999 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); |
87ecf892 | 3000 | #endif |
78f9721b SM |
3001 | /* After we've set the flags, it could be argued that |
3002 | we don't need to do the attributes.pm-based setting | |
3003 | process, and shouldn't bother appending recognized | |
3004 | flags. To experiment with that, uncomment the | |
3005 | following "else": */ | |
0256094b | 3006 | else |
78f9721b SM |
3007 | attrs = append_elem(OP_LIST, attrs, |
3008 | newSVOP(OP_CONST, 0, | |
3009 | newSVpvn(s, len))); | |
09bef843 SB |
3010 | } |
3011 | s = skipspace(d); | |
0120eecf | 3012 | if (*s == ':' && s[1] != ':') |
09bef843 | 3013 | s = skipspace(s+1); |
0120eecf GS |
3014 | else if (s == d) |
3015 | break; /* require real whitespace or :'s */ | |
09bef843 | 3016 | } |
f9829d6b GS |
3017 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
3018 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
3019 | char q = ((*s == '\'') ? '"' : '\''); |
3020 | /* If here for an expression, and parsed no attrs, back off. */ | |
3021 | if (tmp == '=' && !attrs) { | |
3022 | s = PL_bufptr; | |
3023 | break; | |
3024 | } | |
3025 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3026 | context messages from yyerror(). | |
3027 | */ | |
3028 | PL_bufptr = s; | |
3029 | if (!*s) | |
3030 | yyerror("Unterminated attribute list"); | |
3031 | else | |
3032 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3033 | q, *s, q)); | |
3034 | if (attrs) | |
3035 | op_free(attrs); | |
3036 | OPERATOR(':'); | |
3037 | } | |
f9829d6b | 3038 | got_attrs: |
09bef843 SB |
3039 | if (attrs) { |
3040 | PL_nextval[PL_nexttoke].opval = attrs; | |
3041 | force_next(THING); | |
3042 | } | |
3043 | TOKEN(COLONATTR); | |
3044 | } | |
a0d0e21e | 3045 | OPERATOR(':'); |
8990e307 LW |
3046 | case '(': |
3047 | s++; | |
3280af22 NIS |
3048 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3049 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3050 | else |
3280af22 | 3051 | PL_expect = XTERM; |
a0d0e21e | 3052 | TOKEN('('); |
378cc40b | 3053 | case ';': |
f4dd75d9 | 3054 | CLINE; |
378cc40b LW |
3055 | tmp = *s++; |
3056 | OPERATOR(tmp); | |
3057 | case ')': | |
378cc40b | 3058 | tmp = *s++; |
16d20bd9 AD |
3059 | s = skipspace(s); |
3060 | if (*s == '{') | |
3061 | PREBLOCK(tmp); | |
378cc40b | 3062 | TERM(tmp); |
79072805 LW |
3063 | case ']': |
3064 | s++; | |
3280af22 | 3065 | if (PL_lex_brackets <= 0) |
d98d5fff | 3066 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3067 | else |
3280af22 NIS |
3068 | --PL_lex_brackets; |
3069 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3070 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3071 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3072 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3073 | } |
3074 | } | |
4633a7c4 | 3075 | TERM(']'); |
79072805 LW |
3076 | case '{': |
3077 | leftbracket: | |
79072805 | 3078 | s++; |
3280af22 NIS |
3079 | if (PL_lex_brackets > 100) { |
3080 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
3081 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 3082 | SAVEFREEPV(newlb); |
3280af22 | 3083 | PL_lex_brackstack = newlb; |
8990e307 LW |
3084 | } |
3085 | } | |
3280af22 | 3086 | switch (PL_expect) { |
a0d0e21e | 3087 | case XTERM: |
3280af22 | 3088 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3089 | s--; |
3090 | PRETERMBLOCK(DO); | |
3091 | } | |
3280af22 NIS |
3092 | if (PL_oldoldbufptr == PL_last_lop) |
3093 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3094 | else |
3280af22 | 3095 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3096 | OPERATOR(HASHBRACK); |
a0d0e21e | 3097 | case XOPERATOR: |
bf4acbe4 | 3098 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3099 | s++; |
44a8e56a | 3100 | d = s; |
3280af22 NIS |
3101 | PL_tokenbuf[0] = '\0'; |
3102 | if (d < PL_bufend && *d == '-') { | |
3103 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3104 | d++; |
bf4acbe4 | 3105 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3106 | d++; |
3107 | } | |
7e2040f0 | 3108 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3109 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3110 | FALSE, &len); |
bf4acbe4 | 3111 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3112 | d++; |
3113 | if (*d == '}') { | |
3280af22 | 3114 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3115 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3116 | if (minus) | |
3117 | force_next('-'); | |
748a9306 LW |
3118 | } |
3119 | } | |
3120 | /* FALL THROUGH */ | |
09bef843 | 3121 | case XATTRBLOCK: |
748a9306 | 3122 | case XBLOCK: |
3280af22 NIS |
3123 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3124 | PL_expect = XSTATE; | |
a0d0e21e | 3125 | break; |
09bef843 | 3126 | case XATTRTERM: |
a0d0e21e | 3127 | case XTERMBLOCK: |
3280af22 NIS |
3128 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3129 | PL_expect = XSTATE; | |
a0d0e21e LW |
3130 | break; |
3131 | default: { | |
3132 | char *t; | |
3280af22 NIS |
3133 | if (PL_oldoldbufptr == PL_last_lop) |
3134 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3135 | else |
3280af22 | 3136 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3137 | s = skipspace(s); |
8452ff4b SB |
3138 | if (*s == '}') { |
3139 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3140 | PL_expect = XTERM; | |
3141 | /* This hack is to get the ${} in the message. */ | |
3142 | PL_bufptr = s+1; | |
3143 | yyerror("syntax error"); | |
3144 | break; | |
3145 | } | |
a0d0e21e | 3146 | OPERATOR(HASHBRACK); |
8452ff4b | 3147 | } |
b8a4b1be GS |
3148 | /* This hack serves to disambiguate a pair of curlies |
3149 | * as being a block or an anon hash. Normally, expectation | |
3150 | * determines that, but in cases where we're not in a | |
3151 | * position to expect anything in particular (like inside | |
3152 | * eval"") we have to resolve the ambiguity. This code | |
3153 | * covers the case where the first term in the curlies is a | |
3154 | * quoted string. Most other cases need to be explicitly | |
3155 | * disambiguated by prepending a `+' before the opening | |
3156 | * curly in order to force resolution as an anon hash. | |
3157 | * | |
3158 | * XXX should probably propagate the outer expectation | |
3159 | * into eval"" to rely less on this hack, but that could | |
3160 | * potentially break current behavior of eval"". | |
3161 | * GSAR 97-07-21 | |
3162 | */ | |
3163 | t = s; | |
3164 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3165 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3166 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3167 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3168 | t++; | |
3169 | t++; | |
a0d0e21e | 3170 | } |
b8a4b1be | 3171 | else if (*s == 'q') { |
3280af22 | 3172 | if (++t < PL_bufend |
b8a4b1be | 3173 | && (!isALNUM(*t) |
3280af22 | 3174 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3175 | && !isALNUM(*t)))) |
3176 | { | |
b8a4b1be GS |
3177 | char *tmps; |
3178 | char open, close, term; | |
3179 | I32 brackets = 1; | |
3180 | ||
3280af22 | 3181 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3182 | t++; |
3183 | term = *t; | |
3184 | open = term; | |
3185 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3186 | term = tmps[5]; | |
3187 | close = term; | |
3188 | if (open == close) | |
3280af22 NIS |
3189 | for (t++; t < PL_bufend; t++) { |
3190 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3191 | t++; |
6d07e5e9 | 3192 | else if (*t == open) |
b8a4b1be GS |
3193 | break; |
3194 | } | |
3195 | else | |
3280af22 NIS |
3196 | for (t++; t < PL_bufend; t++) { |
3197 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3198 | t++; |
6d07e5e9 | 3199 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3200 | break; |
3201 | else if (*t == open) | |
3202 | brackets++; | |
3203 | } | |
3204 | } | |
3205 | t++; | |
a0d0e21e | 3206 | } |
7e2040f0 | 3207 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3208 | t += UTF8SKIP(t); |
7e2040f0 | 3209 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3210 | t += UTF8SKIP(t); |
a0d0e21e | 3211 | } |
3280af22 | 3212 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3213 | t++; |
b8a4b1be GS |
3214 | /* if comma follows first term, call it an anon hash */ |
3215 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3216 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3217 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3218 | OPERATOR(HASHBRACK); |
3280af22 | 3219 | if (PL_expect == XREF) |
4e4e412b | 3220 | PL_expect = XTERM; |
a0d0e21e | 3221 | else { |
3280af22 NIS |
3222 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3223 | PL_expect = XSTATE; | |
a0d0e21e | 3224 | } |
8990e307 | 3225 | } |
a0d0e21e | 3226 | break; |
463ee0b2 | 3227 | } |
57843af0 | 3228 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3229 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3230 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3231 | TOKEN('{'); |
378cc40b | 3232 | case '}': |
79072805 LW |
3233 | rightbracket: |
3234 | s++; | |
3280af22 | 3235 | if (PL_lex_brackets <= 0) |
d98d5fff | 3236 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3237 | else |
3280af22 | 3238 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3239 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3240 | PL_lex_formbrack = 0; |
3241 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3242 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3243 | if (PL_expect & XFAKEBRACK) { |
3244 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3245 | PL_lex_state = LEX_INTERPEND; |
3246 | PL_bufptr = s; | |
cea2e8a9 | 3247 | return yylex(); /* ignore fake brackets */ |
79072805 | 3248 | } |
fa83b5b6 | 3249 | if (*s == '-' && s[1] == '>') |
3280af22 | 3250 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3251 | else if (*s != '[' && *s != '{') |
3280af22 | 3252 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3253 | } |
3254 | } | |
9059aa12 LW |
3255 | if (PL_expect & XFAKEBRACK) { |
3256 | PL_expect &= XENUMMASK; | |
3280af22 | 3257 | PL_bufptr = s; |
cea2e8a9 | 3258 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3259 | } |
79072805 LW |
3260 | force_next('}'); |
3261 | TOKEN(';'); | |
378cc40b LW |
3262 | case '&': |
3263 | s++; | |
3264 | tmp = *s++; | |
3265 | if (tmp == '&') | |
a0d0e21e | 3266 | AOPERATOR(ANDAND); |
378cc40b | 3267 | s--; |
3280af22 | 3268 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3269 | if (ckWARN(WARN_SEMICOLON) |
3270 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3271 | { | |
57843af0 | 3272 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3273 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3274 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3275 | } |
79072805 | 3276 | BAop(OP_BIT_AND); |
463ee0b2 | 3277 | } |
79072805 | 3278 | |
3280af22 NIS |
3279 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3280 | if (*PL_tokenbuf) { | |
3281 | PL_expect = XOPERATOR; | |
3282 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3283 | } |
79072805 LW |
3284 | else |
3285 | PREREF('&'); | |
c07a80fd | 3286 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3287 | TERM('&'); |
3288 | ||
378cc40b LW |
3289 | case '|': |
3290 | s++; | |
3291 | tmp = *s++; | |
3292 | if (tmp == '|') | |
a0d0e21e | 3293 | AOPERATOR(OROR); |
378cc40b | 3294 | s--; |
79072805 | 3295 | BOop(OP_BIT_OR); |
378cc40b LW |
3296 | case '=': |
3297 | s++; | |
3298 | tmp = *s++; | |
3299 | if (tmp == '=') | |
79072805 LW |
3300 | Eop(OP_EQ); |
3301 | if (tmp == '>') | |
3302 | OPERATOR(','); | |
378cc40b | 3303 | if (tmp == '~') |
79072805 | 3304 | PMop(OP_MATCH); |
599cee73 | 3305 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3306 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3307 | s--; |
3280af22 NIS |
3308 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3309 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3310 | { |
3280af22 NIS |
3311 | if (PL_in_eval && !PL_rsfp) { |
3312 | d = PL_bufend; | |
a5f75d66 AD |
3313 | while (s < d) { |
3314 | if (*s++ == '\n') { | |
3315 | incline(s); | |
3316 | if (strnEQ(s,"=cut",4)) { | |
3317 | s = strchr(s,'\n'); | |
3318 | if (s) | |
3319 | s++; | |
3320 | else | |
3321 | s = d; | |
3322 | incline(s); | |
3323 | goto retry; | |
3324 | } | |
3325 | } | |
3326 | } | |
3327 | goto retry; | |
3328 | } | |
3280af22 NIS |
3329 | s = PL_bufend; |
3330 | PL_doextract = TRUE; | |
a0d0e21e LW |
3331 | goto retry; |
3332 | } | |
3280af22 | 3333 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3334 | char *t; |
51882d45 | 3335 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3336 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3337 | #else |
bf4acbe4 | 3338 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3339 | #endif |
a0d0e21e LW |
3340 | if (*t == '\n' || *t == '#') { |
3341 | s--; | |
3280af22 | 3342 | PL_expect = XBLOCK; |
a0d0e21e LW |
3343 | goto leftbracket; |
3344 | } | |
79072805 | 3345 | } |
a0d0e21e LW |
3346 | yylval.ival = 0; |
3347 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3348 | case '!': |
3349 | s++; | |
3350 | tmp = *s++; | |
3351 | if (tmp == '=') | |
79072805 | 3352 | Eop(OP_NE); |
378cc40b | 3353 | if (tmp == '~') |
79072805 | 3354 | PMop(OP_NOT); |
378cc40b LW |
3355 | s--; |
3356 | OPERATOR('!'); | |
3357 | case '<': | |
3280af22 | 3358 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3359 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3360 | check_uni(); |
79072805 LW |
3361 | if (s[1] == '<') |
3362 | s = scan_heredoc(s); | |
3363 | else | |
3364 | s = scan_inputsymbol(s); | |
3365 | TERM(sublex_start()); | |
378cc40b LW |
3366 | } |
3367 | s++; | |
3368 | tmp = *s++; | |
3369 | if (tmp == '<') | |
79072805 | 3370 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3371 | if (tmp == '=') { |
3372 | tmp = *s++; | |
3373 | if (tmp == '>') | |
79072805 | 3374 | Eop(OP_NCMP); |
395c3793 | 3375 | s--; |
79072805 | 3376 | Rop(OP_LE); |
395c3793 | 3377 | } |
378cc40b | 3378 | s--; |
79072805 | 3379 | Rop(OP_LT); |
378cc40b LW |
3380 | case '>': |
3381 | s++; | |
3382 | tmp = *s++; | |
3383 | if (tmp == '>') | |
79072805 | 3384 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3385 | if (tmp == '=') |
79072805 | 3386 | Rop(OP_GE); |
378cc40b | 3387 | s--; |
79072805 | 3388 | Rop(OP_GT); |
378cc40b LW |
3389 | |
3390 | case '$': | |
bbce6d69 | 3391 | CLINE; |
3392 | ||
3280af22 NIS |
3393 | if (PL_expect == XOPERATOR) { |
3394 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3395 | PL_expect = XTERM; | |
a0d0e21e | 3396 | depcom(); |
bbce6d69 | 3397 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3398 | } |
8990e307 | 3399 | } |
a0d0e21e | 3400 | |
7e2040f0 | 3401 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3402 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3403 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3404 | sizeof PL_tokenbuf - 1, FALSE); | |
3405 | if (PL_expect == XOPERATOR) | |
3406 | no_op("Array length", s); | |
3280af22 | 3407 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3408 | PREREF(DOLSHARP); |
3280af22 NIS |
3409 | PL_expect = XOPERATOR; |
3410 | PL_pending_ident = '#'; | |
463ee0b2 | 3411 | TOKEN(DOLSHARP); |
79072805 | 3412 | } |
bbce6d69 | 3413 | |
3280af22 | 3414 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3415 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3416 | sizeof PL_tokenbuf - 1, FALSE); | |
3417 | if (PL_expect == XOPERATOR) | |
3418 | no_op("Scalar", s); | |
3280af22 NIS |
3419 | if (!PL_tokenbuf[1]) { |
3420 | if (s == PL_bufend) | |
bbce6d69 | 3421 | yyerror("Final $ should be \\$ or $name"); |
3422 | PREREF('$'); | |
8990e307 | 3423 | } |
a0d0e21e | 3424 | |
bbce6d69 | 3425 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3426 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3427 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3428 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3429 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3430 | TERM(THING); | |
3431 | } | |
3432 | ||
ff68c719 | 3433 | d = s; |
69d2bceb | 3434 | tmp = (I32)*s; |
3280af22 | 3435 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3436 | s = skipspace(s); |
3437 | ||
3280af22 | 3438 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3439 | char *t; |
3440 | if (*s == '[') { | |
3280af22 | 3441 | PL_tokenbuf[0] = '@'; |
599cee73 | 3442 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3443 | for(t = s + 1; |
7e2040f0 | 3444 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3445 | t++) ; |
a0d0e21e | 3446 | if (*t++ == ',') { |
3280af22 NIS |
3447 | PL_bufptr = skipspace(PL_bufptr); |
3448 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3449 | t++; |
cea2e8a9 | 3450 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3451 | "Multidimensional syntax %.*s not supported", |
3452 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3453 | } |
3454 | } | |
bbce6d69 | 3455 | } |
3456 | else if (*s == '{') { | |
3280af22 | 3457 | PL_tokenbuf[0] = '%'; |
599cee73 | 3458 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3459 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3460 | { | |
3280af22 | 3461 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3462 | STRLEN len; |
3463 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3464 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3465 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3466 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3467 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3468 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3469 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3470 | } |
93a17b20 LW |
3471 | } |
3472 | } | |
2f3197b3 | 3473 | } |
bbce6d69 | 3474 | |
3280af22 | 3475 | PL_expect = XOPERATOR; |
69d2bceb | 3476 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3477 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3478 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3479 | PL_expect = XOPERATOR; | |
bbce6d69 | 3480 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3481 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3482 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3483 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3484 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3485 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3486 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3487 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3488 | /* binary operators exclude handle interpretations */ |
3489 | switch (tmp) { | |
3490 | case -KEY_x: | |
3491 | case -KEY_eq: | |
3492 | case -KEY_ne: | |
3493 | case -KEY_gt: | |
3494 | case -KEY_lt: | |
3495 | case -KEY_ge: | |
3496 | case -KEY_le: | |
3497 | case -KEY_cmp: | |
3498 | break; | |
3499 | default: | |
3280af22 | 3500 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3501 | break; |
3502 | } | |
3503 | } | |
68dc0745 | 3504 | else { |
3505 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3506 | if (gv && GvCVu(gv)) | |
3280af22 | 3507 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3508 | } |
93a17b20 | 3509 | } |
bbce6d69 | 3510 | else if (isDIGIT(*s)) |
3280af22 | 3511 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3512 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3513 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3514 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3515 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3516 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3517 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3518 | } |
3280af22 | 3519 | PL_pending_ident = '$'; |
79072805 | 3520 | TOKEN('$'); |
378cc40b LW |
3521 | |
3522 | case '@': | |
3280af22 | 3523 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3524 | no_op("Array", s); |
3280af22 NIS |
3525 | PL_tokenbuf[0] = '@'; |
3526 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3527 | if (!PL_tokenbuf[1]) { | |
3528 | if (s == PL_bufend) | |
bbce6d69 | 3529 | yyerror("Final @ should be \\@ or @name"); |
3530 | PREREF('@'); | |
3531 | } | |
3280af22 | 3532 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3533 | s = skipspace(s); |
3280af22 | 3534 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3535 | if (*s == '{') |
3280af22 | 3536 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3537 | |
3538 | /* Warn about @ where they meant $. */ | |
599cee73 | 3539 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3540 | if (*s == '[' || *s == '{') { |
3541 | char *t = s + 1; | |
7e2040f0 | 3542 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3543 | t++; |
3544 | if (*t == '}' || *t == ']') { | |
3545 | t++; | |
3280af22 | 3546 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3547 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3548 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3549 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3550 | } |
93a17b20 LW |
3551 | } |
3552 | } | |
463ee0b2 | 3553 | } |
3280af22 | 3554 | PL_pending_ident = '@'; |
79072805 | 3555 | TERM('@'); |
378cc40b LW |
3556 | |
3557 | case '/': /* may either be division or pattern */ | |
3558 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3559 | if (PL_expect != XOPERATOR) { |
c277df42 | 3560 | /* Disable warning on "study /blah/" */ |
4e553d73 NIS |
3561 | if (PL_oldoldbufptr == PL_last_uni |
3562 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3563 | || memNE(PL_last_uni, "study", 5) |
3564 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3565 | check_uni(); |
8782bef2 | 3566 | s = scan_pat(s,OP_MATCH); |
79072805 | 3567 | TERM(sublex_start()); |
378cc40b LW |
3568 | } |
3569 | tmp = *s++; | |
a687059c | 3570 | if (tmp == '/') |
79072805 | 3571 | Mop(OP_DIVIDE); |
378cc40b LW |
3572 | OPERATOR(tmp); |
3573 | ||
3574 | case '.': | |
51882d45 GS |
3575 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3576 | #ifdef PERL_STRICT_CR | |
3577 | && s[1] == '\n' | |
3578 | #else | |
3579 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3580 | #endif | |
3581 | && (s == PL_linestart || s[-1] == '\n') ) | |
3582 | { | |
3280af22 NIS |
3583 | PL_lex_formbrack = 0; |
3584 | PL_expect = XSTATE; | |
79072805 LW |
3585 | goto rightbracket; |
3586 | } | |
3280af22 | 3587 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3588 | tmp = *s++; |
a687059c LW |
3589 | if (*s == tmp) { |
3590 | s++; | |
2f3197b3 LW |
3591 | if (*s == tmp) { |
3592 | s++; | |
79072805 | 3593 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3594 | } |
3595 | else | |
79072805 | 3596 | yylval.ival = 0; |
378cc40b | 3597 | OPERATOR(DOTDOT); |
a687059c | 3598 | } |
3280af22 | 3599 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3600 | check_uni(); |
79072805 | 3601 | Aop(OP_CONCAT); |
378cc40b LW |
3602 | } |
3603 | /* FALL THROUGH */ | |
3604 | case '0': case '1': case '2': case '3': case '4': | |
3605 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3606 | s = scan_num(s, &yylval); |
4e553d73 | 3607 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3608 | "### Saw number in '%s'\n", s); |
5f80b19c | 3609 | } ); |
3280af22 | 3610 | if (PL_expect == XOPERATOR) |
8990e307 | 3611 | no_op("Number",s); |
79072805 LW |
3612 | TERM(THING); |
3613 | ||
3614 | case '\'': | |
09bef843 | 3615 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3616 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3617 | "### Saw string before '%s'\n", s); |
5f80b19c | 3618 | } ); |
3280af22 NIS |
3619 | if (PL_expect == XOPERATOR) { |
3620 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3621 | PL_expect = XTERM; | |
a0d0e21e LW |
3622 | depcom(); |
3623 | return ','; /* grandfather non-comma-format format */ | |
3624 | } | |
463ee0b2 | 3625 | else |
8990e307 | 3626 | no_op("String",s); |
463ee0b2 | 3627 | } |
79072805 | 3628 | if (!s) |
85e6fe83 | 3629 | missingterm((char*)0); |
79072805 LW |
3630 | yylval.ival = OP_CONST; |
3631 | TERM(sublex_start()); | |
3632 | ||
3633 | case '"': | |
09bef843 | 3634 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3635 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3636 | "### Saw string before '%s'\n", s); |
5f80b19c | 3637 | } ); |
3280af22 NIS |
3638 | if (PL_expect == XOPERATOR) { |
3639 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3640 | PL_expect = XTERM; | |
a0d0e21e LW |
3641 | depcom(); |
3642 | return ','; /* grandfather non-comma-format format */ | |
3643 | } | |
463ee0b2 | 3644 | else |
8990e307 | 3645 | no_op("String",s); |
463ee0b2 | 3646 | } |
79072805 | 3647 | if (!s) |
85e6fe83 | 3648 | missingterm((char*)0); |
4633a7c4 | 3649 | yylval.ival = OP_CONST; |
3280af22 | 3650 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3651 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3652 | yylval.ival = OP_STRINGIFY; |
3653 | break; | |
3654 | } | |
3655 | } | |
79072805 LW |
3656 | TERM(sublex_start()); |
3657 | ||
3658 | case '`': | |
09bef843 | 3659 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3660 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3661 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3662 | } ); |
3280af22 | 3663 | if (PL_expect == XOPERATOR) |
8990e307 | 3664 | no_op("Backticks",s); |
79072805 | 3665 | if (!s) |
85e6fe83 | 3666 | missingterm((char*)0); |
79072805 LW |
3667 | yylval.ival = OP_BACKTICK; |
3668 | set_csh(); | |
3669 | TERM(sublex_start()); | |
3670 | ||
3671 | case '\\': | |
3672 | s++; | |
599cee73 | 3673 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3674 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3675 | *s, *s); |
3280af22 | 3676 | if (PL_expect == XOPERATOR) |
8990e307 | 3677 | no_op("Backslash",s); |
79072805 LW |
3678 | OPERATOR(REFGEN); |
3679 | ||
a7cb1f99 | 3680 | case 'v': |
e526c9e6 | 3681 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3682 | char *start = s; |
3683 | start++; | |
3684 | start++; | |
dd629d5b | 3685 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3686 | start++; |
3687 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3688 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3689 | TERM(THING); |
3690 | } | |
e526c9e6 | 3691 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
62ec34bd | 3692 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF || PL_expect == XSTATE)) { |
e526c9e6 GS |
3693 | char c = *start; |
3694 | GV *gv; | |
3695 | *start = '\0'; | |
3696 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3697 | *start = c; | |
3698 | if (!gv) { | |
b73d6f50 | 3699 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3700 | TERM(THING); |
3701 | } | |
3702 | } | |
a7cb1f99 GS |
3703 | } |
3704 | goto keylookup; | |
79072805 | 3705 | case 'x': |
3280af22 | 3706 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3707 | s++; |
3708 | Mop(OP_REPEAT); | |
2f3197b3 | 3709 | } |
79072805 LW |
3710 | goto keylookup; |
3711 | ||
378cc40b | 3712 | case '_': |
79072805 LW |
3713 | case 'a': case 'A': |
3714 | case 'b': case 'B': | |
3715 | case 'c': case 'C': | |
3716 | case 'd': case 'D': | |
3717 | case 'e': case 'E': | |
3718 | case 'f': case 'F': | |
3719 | case 'g': case 'G': | |
3720 | case 'h': case 'H': | |
3721 | case 'i': case 'I': | |
3722 | case 'j': case 'J': | |
3723 | case 'k': case 'K': | |
3724 | case 'l': case 'L': | |
3725 | case 'm': case 'M': | |
3726 | case 'n': case 'N': | |
3727 | case 'o': case 'O': | |
3728 | case 'p': case 'P': | |
3729 | case 'q': case 'Q': | |
3730 | case 'r': case 'R': | |
3731 | case 's': case 'S': | |
3732 | case 't': case 'T': | |
3733 | case 'u': case 'U': | |
a7cb1f99 | 3734 | case 'V': |
79072805 LW |
3735 | case 'w': case 'W': |
3736 | case 'X': | |
3737 | case 'y': case 'Y': | |
3738 | case 'z': case 'Z': | |
3739 | ||
49dc05e3 | 3740 | keylookup: { |
161b471a NIS |
3741 | gv = Nullgv; |
3742 | gvp = 0; | |
49dc05e3 | 3743 | |
3280af22 NIS |
3744 | PL_bufptr = s; |
3745 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3746 | |
3747 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3748 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3749 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3750 | (PL_tokenbuf[0] == 'q' && | |
3751 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3752 | |
3753 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3754 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3755 | goto just_a_word; |
3756 | ||
3643fb5f | 3757 | d = s; |
3280af22 | 3758 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3759 | d++; /* no comments skipped here, or s### is misparsed */ |
3760 | ||
3761 | /* Is this a label? */ | |
3280af22 NIS |
3762 | if (!tmp && PL_expect == XSTATE |
3763 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3764 | s = d + 1; |
3280af22 | 3765 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3766 | CLINE; |
3767 | TOKEN(LABEL); | |
3643fb5f CS |
3768 | } |
3769 | ||
3770 | /* Check for keywords */ | |
3280af22 | 3771 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3772 | |
3773 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3774 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3775 | CLINE; |
3280af22 | 3776 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 3777 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 3778 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3779 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
3780 | TERM(WORD); |
3781 | } | |
3782 | ||
a0d0e21e | 3783 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3784 | GV *ogv = Nullgv; /* override (winner) */ |
3785 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3786 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3787 | CV *cv; |
3280af22 | 3788 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3789 | (cv = GvCVu(gv))) |
3790 | { | |
3791 | if (GvIMPORTED_CV(gv)) | |
3792 | ogv = gv; | |
3793 | else if (! CvMETHOD(cv)) | |
3794 | hgv = gv; | |
3795 | } | |
3796 | if (!ogv && | |
3280af22 NIS |
3797 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3798 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3799 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3800 | { | |
3801 | ogv = gv; | |
3802 | } | |
3803 | } | |
3804 | if (ogv) { | |
3805 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3806 | } |
3807 | else if (gv && !gvp | |
3808 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3809 | && GvCVu(gv) |
3280af22 | 3810 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3811 | { |
3812 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3813 | } |
56f7f34b CS |
3814 | else { /* no override */ |
3815 | tmp = -tmp; | |
3816 | gv = Nullgv; | |
3817 | gvp = 0; | |
4944e2f7 GS |
3818 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3819 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3820 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3821 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3822 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3823 | } |
a0d0e21e LW |
3824 | } |
3825 | ||
3826 | reserved_word: | |
3827 | switch (tmp) { | |
79072805 LW |
3828 | |
3829 | default: /* not a keyword */ | |
93a17b20 | 3830 | just_a_word: { |
96e4d5b1 | 3831 | SV *sv; |
ce29ac45 | 3832 | int pkgname = 0; |
3280af22 | 3833 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3834 | |
3835 | /* Get the rest if it looks like a package qualifier */ | |
3836 | ||
155aba94 | 3837 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3838 | STRLEN morelen; |
3280af22 | 3839 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3840 | TRUE, &morelen); |
3841 | if (!morelen) | |
cea2e8a9 | 3842 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3843 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3844 | len += morelen; |
ce29ac45 | 3845 | pkgname = 1; |
a0d0e21e | 3846 | } |
8990e307 | 3847 | |
3280af22 NIS |
3848 | if (PL_expect == XOPERATOR) { |
3849 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3850 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3851 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3852 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3853 | } |
3854 | else | |
54310121 | 3855 | no_op("Bareword",s); |
463ee0b2 | 3856 | } |
8990e307 | 3857 | |
c3e0f903 GS |
3858 | /* Look for a subroutine with this name in current package, |
3859 | unless name is "Foo::", in which case Foo is a bearword | |
3860 | (and a package name). */ | |
3861 | ||
3862 | if (len > 2 && | |
3280af22 | 3863 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3864 | { |
e476b1b5 | 3865 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
4e553d73 | 3866 | Perl_warner(aTHX_ WARN_BAREWORD, |
599cee73 | 3867 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3868 | PL_tokenbuf); |
c3e0f903 | 3869 | len -= 2; |
3280af22 | 3870 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3871 | gv = Nullgv; |
3872 | gvp = 0; | |
3873 | } | |
3874 | else { | |
3875 | len = 0; | |
3876 | if (!gv) | |
3280af22 | 3877 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3878 | } |
3879 | ||
3880 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3881 | |
49dc05e3 | 3882 | if (gvp) { |
79cb57f6 | 3883 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3884 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3885 | } |
3886 | else | |
3280af22 | 3887 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3888 | |
a0d0e21e LW |
3889 | /* Presume this is going to be a bareword of some sort. */ |
3890 | ||
3891 | CLINE; | |
49dc05e3 | 3892 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3893 | yylval.opval->op_private = OPpCONST_BARE; |
3894 | ||
c3e0f903 GS |
3895 | /* And if "Foo::", then that's what it certainly is. */ |
3896 | ||
3897 | if (len) | |
3898 | goto safe_bareword; | |
3899 | ||
8990e307 LW |
3900 | /* See if it's the indirect object for a list operator. */ |
3901 | ||
3280af22 NIS |
3902 | if (PL_oldoldbufptr && |
3903 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3904 | (PL_oldoldbufptr == PL_last_lop |
3905 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3906 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3907 | (PL_expect == XREF || |
3908 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3909 | { |
748a9306 LW |
3910 | bool immediate_paren = *s == '('; |
3911 | ||
a0d0e21e LW |
3912 | /* (Now we can afford to cross potential line boundary.) */ |
3913 | s = skipspace(s); | |
3914 | ||
3915 | /* Two barewords in a row may indicate method call. */ | |
3916 | ||
7e2040f0 | 3917 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3918 | return tmp; |
3919 | ||
3920 | /* If not a declared subroutine, it's an indirect object. */ | |
3921 | /* (But it's an indir obj regardless for sort.) */ | |
3922 | ||
7948272d | 3923 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 3924 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 3925 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 3926 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 3927 | { |
3280af22 | 3928 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3929 | goto bareword; |
93a17b20 LW |
3930 | } |
3931 | } | |
8990e307 | 3932 | |
3280af22 | 3933 | PL_expect = XOPERATOR; |
8990e307 | 3934 | s = skipspace(s); |
1c3923b3 GS |
3935 | |
3936 | /* Is this a word before a => operator? */ | |
ce29ac45 | 3937 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
3938 | CLINE; |
3939 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 3940 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3941 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
3942 | TERM(WORD); |
3943 | } | |
3944 | ||
3945 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 3946 | if (*s == '(') { |
79072805 | 3947 | CLINE; |
96e4d5b1 | 3948 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 3949 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 3950 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3951 | s = d + 1; |
3952 | goto its_constant; | |
3953 | } | |
3954 | } | |
3280af22 NIS |
3955 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3956 | PL_expect = XOPERATOR; | |
93a17b20 | 3957 | force_next(WORD); |
c07a80fd | 3958 | yylval.ival = 0; |
463ee0b2 | 3959 | TOKEN('&'); |
79072805 | 3960 | } |
93a17b20 | 3961 | |
a0d0e21e | 3962 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3963 | |
8ebc5c01 | 3964 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3965 | PL_last_lop = PL_oldbufptr; |
3966 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3967 | PREBLOCK(METHOD); |
463ee0b2 LW |
3968 | } |
3969 | ||
8990e307 LW |
3970 | /* If followed by a bareword, see if it looks like indir obj. */ |
3971 | ||
7e2040f0 | 3972 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3973 | return tmp; |
93a17b20 | 3974 | |
8990e307 LW |
3975 | /* Not a method, so call it a subroutine (if defined) */ |
3976 | ||
8ebc5c01 | 3977 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3978 | CV* cv; |
0453d815 PM |
3979 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3980 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3981 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3982 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3983 | /* Check for a constant sub */ |
46fc3d4c | 3984 | cv = GvCV(gv); |
96e4d5b1 | 3985 | if ((sv = cv_const_sv(cv))) { |
3986 | its_constant: | |
3987 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3988 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3989 | yylval.opval->op_private = 0; | |
3990 | TOKEN(WORD); | |
89bfa8cd | 3991 | } |
3992 | ||
a5f75d66 AD |
3993 | /* Resolve to GV now. */ |
3994 | op_free(yylval.opval); | |
3995 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3996 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3997 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3998 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3999 | /* Is there a prototype? */ |
4000 | if (SvPOK(cv)) { | |
4001 | STRLEN len; | |
7a52d87a | 4002 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4003 | if (!len) |
4004 | TERM(FUNC0SUB); | |
7a52d87a | 4005 | if (strEQ(proto, "$")) |
4633a7c4 | 4006 | OPERATOR(UNIOPSUB); |
7a52d87a | 4007 | if (*proto == '&' && *s == '{') { |
3280af22 | 4008 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
4009 | PREBLOCK(LSTOPSUB); |
4010 | } | |
a9ef352a | 4011 | } |
3280af22 NIS |
4012 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4013 | PL_expect = XTERM; | |
8990e307 LW |
4014 | force_next(WORD); |
4015 | TOKEN(NOAMP); | |
4016 | } | |
748a9306 | 4017 | |
8990e307 LW |
4018 | /* Call it a bare word */ |
4019 | ||
5603f27d GS |
4020 | if (PL_hints & HINT_STRICT_SUBS) |
4021 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4022 | else { | |
4023 | bareword: | |
4024 | if (ckWARN(WARN_RESERVED)) { | |
4025 | if (lastchar != '-') { | |
4026 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
9bbb1ada | 4027 | if (!*d && strNE(PL_tokenbuf,"main")) |
cea2e8a9 | 4028 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
4029 | PL_tokenbuf); |
4030 | } | |
748a9306 LW |
4031 | } |
4032 | } | |
c3e0f903 GS |
4033 | |
4034 | safe_bareword: | |
f248d071 | 4035 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
4036 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
4037 | "Operator or semicolon missing before %c%s", | |
3280af22 | 4038 | lastchar, PL_tokenbuf); |
0453d815 PM |
4039 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
4040 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
4041 | lastchar, lastchar); |
4042 | } | |
93a17b20 | 4043 | TOKEN(WORD); |
79072805 | 4044 | } |
79072805 | 4045 | |
68dc0745 | 4046 | case KEY___FILE__: |
46fc3d4c | 4047 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4048 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4049 | TERM(THING); |
4050 | ||
79072805 | 4051 | case KEY___LINE__: |
cf2093f6 | 4052 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4053 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4054 | TERM(THING); |
68dc0745 | 4055 | |
4056 | case KEY___PACKAGE__: | |
4057 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
4058 | (PL_curstash |
4059 | ? newSVsv(PL_curstname) | |
4060 | : &PL_sv_undef)); | |
79072805 | 4061 | TERM(THING); |
79072805 | 4062 | |
e50aee73 | 4063 | case KEY___DATA__: |
79072805 LW |
4064 | case KEY___END__: { |
4065 | GV *gv; | |
79072805 LW |
4066 | |
4067 | /*SUPPRESS 560*/ | |
3280af22 | 4068 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4069 | char *pname = "main"; |
3280af22 NIS |
4070 | if (PL_tokenbuf[2] == 'D') |
4071 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4072 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4073 | GvMULTI_on(gv); |
79072805 | 4074 | if (!GvIO(gv)) |
a0d0e21e | 4075 | GvIOp(gv) = newIO(); |
3280af22 | 4076 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4077 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4078 | { | |
3280af22 | 4079 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4080 | fcntl(fd,F_SETFD,fd >= 3); |
4081 | } | |
79072805 | 4082 | #endif |
fd049845 | 4083 | /* Mark this internal pseudo-handle as clean */ |
4084 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4085 | if (PL_preprocess) |
50952442 | 4086 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4087 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4088 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4089 | else |
50952442 | 4090 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4091 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4092 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4093 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4094 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4095 | if (PL_bufend-PL_bufptr > 2 |
4096 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4097 | { |
4098 | Off_t loc = 0; | |
50952442 | 4099 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4100 | loc = PerlIO_tell(PL_rsfp); |
4101 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4102 | } | |
2986a63f JH |
4103 | #ifdef NETWARE |
4104 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4105 | #else | |
c39cd008 | 4106 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4107 | #endif /* NETWARE */ |
1143fce0 JH |
4108 | #ifdef PERLIO_IS_STDIO /* really? */ |
4109 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4110 | /* XXX see note in do_binmode() */ |
4111 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4112 | # endif |
4113 | #endif | |
c39cd008 GS |
4114 | if (loc > 0) |
4115 | PerlIO_seek(PL_rsfp, loc, 0); | |
4116 | } | |
4117 | } | |
4118 | #endif | |
7948272d | 4119 | #ifdef PERLIO_LAYERS |
0064a8a9 | 4120 | if (UTF && !IN_BYTES) |
7948272d NIS |
4121 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); |
4122 | #endif | |
3280af22 | 4123 | PL_rsfp = Nullfp; |
79072805 LW |
4124 | } |
4125 | goto fake_eof; | |
e929a76b | 4126 | } |
de3bb511 | 4127 | |
8990e307 | 4128 | case KEY_AUTOLOAD: |
ed6116ce | 4129 | case KEY_DESTROY: |
79072805 | 4130 | case KEY_BEGIN: |
7d30b5c4 | 4131 | case KEY_CHECK: |
7d07dbc2 | 4132 | case KEY_INIT: |
7d30b5c4 | 4133 | case KEY_END: |
3280af22 NIS |
4134 | if (PL_expect == XSTATE) { |
4135 | s = PL_bufptr; | |
93a17b20 | 4136 | goto really_sub; |
79072805 LW |
4137 | } |
4138 | goto just_a_word; | |
4139 | ||
a0d0e21e LW |
4140 | case KEY_CORE: |
4141 | if (*s == ':' && s[1] == ':') { | |
4142 | s += 2; | |
748a9306 | 4143 | d = s; |
3280af22 | 4144 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4145 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4146 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4147 | if (tmp < 0) |
4148 | tmp = -tmp; | |
4149 | goto reserved_word; | |
4150 | } | |
4151 | goto just_a_word; | |
4152 | ||
463ee0b2 LW |
4153 | case KEY_abs: |
4154 | UNI(OP_ABS); | |
4155 | ||
79072805 LW |
4156 | case KEY_alarm: |
4157 | UNI(OP_ALARM); | |
4158 | ||
4159 | case KEY_accept: | |
a0d0e21e | 4160 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4161 | |
463ee0b2 LW |
4162 | case KEY_and: |
4163 | OPERATOR(ANDOP); | |
4164 | ||
79072805 | 4165 | case KEY_atan2: |
a0d0e21e | 4166 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4167 | |
79072805 | 4168 | case KEY_bind: |
a0d0e21e | 4169 | LOP(OP_BIND,XTERM); |
79072805 LW |
4170 | |
4171 | case KEY_binmode: | |
1c1fc3ea | 4172 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4173 | |
4174 | case KEY_bless: | |
a0d0e21e | 4175 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4176 | |
4177 | case KEY_chop: | |
4178 | UNI(OP_CHOP); | |
4179 | ||
4180 | case KEY_continue: | |
4181 | PREBLOCK(CONTINUE); | |
4182 | ||
4183 | case KEY_chdir: | |
85e6fe83 | 4184 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4185 | UNI(OP_CHDIR); |
4186 | ||
4187 | case KEY_close: | |
4188 | UNI(OP_CLOSE); | |
4189 | ||
4190 | case KEY_closedir: | |
4191 | UNI(OP_CLOSEDIR); | |
4192 | ||
4193 | case KEY_cmp: | |
4194 | Eop(OP_SCMP); | |
4195 | ||
4196 | case KEY_caller: | |
4197 | UNI(OP_CALLER); | |
4198 | ||
4199 | case KEY_crypt: | |
4200 | #ifdef FCRYPT | |
f4c556ac GS |
4201 | if (!PL_cryptseen) { |
4202 | PL_cryptseen = TRUE; | |
de3bb511 | 4203 | init_des(); |
f4c556ac | 4204 | } |
a687059c | 4205 | #endif |
a0d0e21e | 4206 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4207 | |
4208 | case KEY_chmod: | |
a0d0e21e | 4209 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4210 | |
4211 | case KEY_chown: | |
a0d0e21e | 4212 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4213 | |
4214 | case KEY_connect: | |
a0d0e21e | 4215 | LOP(OP_CONNECT,XTERM); |
79072805 | 4216 | |
463ee0b2 LW |
4217 | case KEY_chr: |
4218 | UNI(OP_CHR); | |
4219 | ||
79072805 LW |
4220 | case KEY_cos: |
4221 | UNI(OP_COS); | |
4222 | ||
4223 | case KEY_chroot: | |
4224 | UNI(OP_CHROOT); | |
4225 | ||
4226 | case KEY_do: | |
4227 | s = skipspace(s); | |
4228 | if (*s == '{') | |
a0d0e21e | 4229 | PRETERMBLOCK(DO); |
79072805 | 4230 | if (*s != '\'') |
89c5585f | 4231 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4232 | OPERATOR(DO); |
79072805 LW |
4233 | |
4234 | case KEY_die: | |
3280af22 | 4235 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4236 | LOP(OP_DIE,XTERM); |
79072805 LW |
4237 | |
4238 | case KEY_defined: | |
4239 | UNI(OP_DEFINED); | |
4240 | ||
4241 | case KEY_delete: | |
a0d0e21e | 4242 | UNI(OP_DELETE); |
79072805 LW |
4243 | |
4244 | case KEY_dbmopen: | |
a0d0e21e LW |
4245 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4246 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4247 | |
4248 | case KEY_dbmclose: | |
4249 | UNI(OP_DBMCLOSE); | |
4250 | ||
4251 | case KEY_dump: | |
a0d0e21e | 4252 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4253 | LOOPX(OP_DUMP); |
4254 | ||
4255 | case KEY_else: | |
4256 | PREBLOCK(ELSE); | |
4257 | ||
4258 | case KEY_elsif: | |
57843af0 | 4259 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4260 | OPERATOR(ELSIF); |
4261 | ||
4262 | case KEY_eq: | |
4263 | Eop(OP_SEQ); | |
4264 | ||
a0d0e21e LW |
4265 | case KEY_exists: |
4266 | UNI(OP_EXISTS); | |
4e553d73 | 4267 | |
79072805 LW |
4268 | case KEY_exit: |
4269 | UNI(OP_EXIT); | |
4270 | ||
4271 | case KEY_eval: | |
79072805 | 4272 | s = skipspace(s); |
3280af22 | 4273 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4274 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4275 | |
4276 | case KEY_eof: | |
4277 | UNI(OP_EOF); | |
4278 | ||
4279 | case KEY_exp: | |
4280 | UNI(OP_EXP); | |
4281 | ||
4282 | case KEY_each: | |
4283 | UNI(OP_EACH); | |
4284 | ||
4285 | case KEY_exec: | |
4286 | set_csh(); | |
a0d0e21e | 4287 | LOP(OP_EXEC,XREF); |
79072805 LW |
4288 | |
4289 | case KEY_endhostent: | |
4290 | FUN0(OP_EHOSTENT); | |
4291 | ||
4292 | case KEY_endnetent: | |
4293 | FUN0(OP_ENETENT); | |
4294 | ||
4295 | case KEY_endservent: | |
4296 | FUN0(OP_ESERVENT); | |
4297 | ||
4298 | case KEY_endprotoent: | |
4299 | FUN0(OP_EPROTOENT); | |
4300 | ||
4301 | case KEY_endpwent: | |
4302 | FUN0(OP_EPWENT); | |
4303 | ||
4304 | case KEY_endgrent: | |
4305 | FUN0(OP_EGRENT); | |
4306 | ||
4307 | case KEY_for: | |
4308 | case KEY_foreach: | |
57843af0 | 4309 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4310 | s = skipspace(s); |
7e2040f0 | 4311 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4312 | char *p = s; |
3280af22 | 4313 | if ((PL_bufend - p) >= 3 && |
55497cff | 4314 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4315 | p += 2; | |
77ca0c92 LW |
4316 | else if ((PL_bufend - p) >= 4 && |
4317 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4318 | p += 3; | |
55497cff | 4319 | p = skipspace(p); |
7e2040f0 | 4320 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4321 | p = scan_ident(p, PL_bufend, |
4322 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4323 | p = skipspace(p); | |
4324 | } | |
4325 | if (*p != '$') | |
cea2e8a9 | 4326 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4327 | } |
79072805 LW |
4328 | OPERATOR(FOR); |
4329 | ||
4330 | case KEY_formline: | |
a0d0e21e | 4331 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4332 | |
4333 | case KEY_fork: | |
4334 | FUN0(OP_FORK); | |
4335 | ||
4336 | case KEY_fcntl: | |
a0d0e21e | 4337 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4338 | |
4339 | case KEY_fileno: | |
4340 | UNI(OP_FILENO); | |
4341 | ||
4342 | case KEY_flock: | |
a0d0e21e | 4343 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4344 | |
4345 | case KEY_gt: | |
4346 | Rop(OP_SGT); | |
4347 | ||
4348 | case KEY_ge: | |
4349 | Rop(OP_SGE); | |
4350 | ||
4351 | case KEY_grep: | |
2c38e13d | 4352 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4353 | |
4354 | case KEY_goto: | |
a0d0e21e | 4355 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4356 | LOOPX(OP_GOTO); |
4357 | ||
4358 | case KEY_gmtime: | |
4359 | UNI(OP_GMTIME); | |
4360 | ||
4361 | case KEY_getc: | |
4362 | UNI(OP_GETC); | |
4363 | ||
4364 | case KEY_getppid: | |
4365 | FUN0(OP_GETPPID); | |
4366 | ||
4367 | case KEY_getpgrp: | |
4368 | UNI(OP_GETPGRP); | |
4369 | ||
4370 | case KEY_getpriority: | |
a0d0e21e | 4371 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4372 | |
4373 | case KEY_getprotobyname: | |
4374 | UNI(OP_GPBYNAME); | |
4375 | ||
4376 | case KEY_getprotobynumber: | |
a0d0e21e | 4377 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4378 | |
4379 | case KEY_getprotoent: | |
4380 | FUN0(OP_GPROTOENT); | |
4381 | ||
4382 | case KEY_getpwent: | |
4383 | FUN0(OP_GPWENT); | |
4384 | ||
4385 | case KEY_getpwnam: | |
ff68c719 | 4386 | UNI(OP_GPWNAM); |
79072805 LW |
4387 | |
4388 | case KEY_getpwuid: | |
ff68c719 | 4389 | UNI(OP_GPWUID); |
79072805 LW |
4390 | |
4391 | case KEY_getpeername: | |
4392 | UNI(OP_GETPEERNAME); | |
4393 | ||
4394 | case KEY_gethostbyname: | |
4395 | UNI(OP_GHBYNAME); | |
4396 | ||
4397 | case KEY_gethostbyaddr: | |
a0d0e21e | 4398 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4399 | |
4400 | case KEY_gethostent: | |
4401 | FUN0(OP_GHOSTENT); | |
4402 | ||
4403 | case KEY_getnetbyname: | |
4404 | UNI(OP_GNBYNAME); | |
4405 | ||
4406 | case KEY_getnetbyaddr: | |
a0d0e21e | 4407 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4408 | |
4409 | case KEY_getnetent: | |
4410 | FUN0(OP_GNETENT); | |
4411 | ||
4412 | case KEY_getservbyname: | |
a0d0e21e | 4413 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4414 | |
4415 | case KEY_getservbyport: | |
a0d0e21e | 4416 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4417 | |
4418 | case KEY_getservent: | |
4419 | FUN0(OP_GSERVENT); | |
4420 | ||
4421 | case KEY_getsockname: | |
4422 | UNI(OP_GETSOCKNAME); | |
4423 | ||
4424 | case KEY_getsockopt: | |
a0d0e21e | 4425 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4426 | |
4427 | case KEY_getgrent: | |
4428 | FUN0(OP_GGRENT); | |
4429 | ||
4430 | case KEY_getgrnam: | |
ff68c719 | 4431 | UNI(OP_GGRNAM); |
79072805 LW |
4432 | |
4433 | case KEY_getgrgid: | |
ff68c719 | 4434 | UNI(OP_GGRGID); |
79072805 LW |
4435 | |
4436 | case KEY_getlogin: | |
4437 | FUN0(OP_GETLOGIN); | |
4438 | ||
93a17b20 | 4439 | case KEY_glob: |
a0d0e21e LW |
4440 | set_csh(); |
4441 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4442 | |
79072805 LW |
4443 | case KEY_hex: |
4444 | UNI(OP_HEX); | |
4445 | ||
4446 | case KEY_if: | |
57843af0 | 4447 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4448 | OPERATOR(IF); |
4449 | ||
4450 | case KEY_index: | |
a0d0e21e | 4451 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4452 | |
4453 | case KEY_int: | |
4454 | UNI(OP_INT); | |
4455 | ||
4456 | case KEY_ioctl: | |
a0d0e21e | 4457 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4458 | |
4459 | case KEY_join: | |
a0d0e21e | 4460 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4461 | |
4462 | case KEY_keys: | |
4463 | UNI(OP_KEYS); | |
4464 | ||
4465 | case KEY_kill: | |
a0d0e21e | 4466 | LOP(OP_KILL,XTERM); |
79072805 LW |
4467 | |
4468 | case KEY_last: | |
a0d0e21e | 4469 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4470 | LOOPX(OP_LAST); |
4e553d73 | 4471 | |
79072805 LW |
4472 | case KEY_lc: |
4473 | UNI(OP_LC); | |
4474 | ||
4475 | case KEY_lcfirst: | |
4476 | UNI(OP_LCFIRST); | |
4477 | ||
4478 | case KEY_local: | |
09bef843 | 4479 | yylval.ival = 0; |
79072805 LW |
4480 | OPERATOR(LOCAL); |
4481 | ||
4482 | case KEY_length: | |
4483 | UNI(OP_LENGTH); | |
4484 | ||
4485 | case KEY_lt: | |
4486 | Rop(OP_SLT); | |
4487 | ||
4488 | case KEY_le: | |
4489 | Rop(OP_SLE); | |
4490 | ||
4491 | case KEY_localtime: | |
4492 | UNI(OP_LOCALTIME); | |
4493 | ||
4494 | case KEY_log: | |
4495 | UNI(OP_LOG); | |
4496 | ||
4497 | case KEY_link: | |
a0d0e21e | 4498 | LOP(OP_LINK,XTERM); |
79072805 LW |
4499 | |
4500 | case KEY_listen: | |
a0d0e21e | 4501 | LOP(OP_LISTEN,XTERM); |
79072805 | 4502 | |
c0329465 MB |
4503 | case KEY_lock: |
4504 | UNI(OP_LOCK); | |
4505 | ||
79072805 LW |
4506 | case KEY_lstat: |
4507 | UNI(OP_LSTAT); | |
4508 | ||
4509 | case KEY_m: | |
8782bef2 | 4510 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4511 | TERM(sublex_start()); |
4512 | ||
a0d0e21e | 4513 | case KEY_map: |
2c38e13d | 4514 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4515 | |
79072805 | 4516 | case KEY_mkdir: |
a0d0e21e | 4517 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4518 | |
4519 | case KEY_msgctl: | |
a0d0e21e | 4520 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4521 | |
4522 | case KEY_msgget: | |
a0d0e21e | 4523 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4524 | |
4525 | case KEY_msgrcv: | |
a0d0e21e | 4526 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4527 | |
4528 | case KEY_msgsnd: | |
a0d0e21e | 4529 | LOP(OP_MSGSND,XTERM); |
79072805 | 4530 | |
77ca0c92 | 4531 | case KEY_our: |
93a17b20 | 4532 | case KEY_my: |
77ca0c92 | 4533 | PL_in_my = tmp; |
c750a3ec | 4534 | s = skipspace(s); |
7e2040f0 | 4535 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4536 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4537 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4538 | goto really_sub; | |
def3634b | 4539 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4540 | if (!PL_in_my_stash) { |
c750a3ec | 4541 | char tmpbuf[1024]; |
3280af22 NIS |
4542 | PL_bufptr = s; |
4543 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4544 | yyerror(tmpbuf); |
4545 | } | |
4546 | } | |
09bef843 | 4547 | yylval.ival = 1; |
55497cff | 4548 | OPERATOR(MY); |
93a17b20 | 4549 | |
79072805 | 4550 | case KEY_next: |
a0d0e21e | 4551 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4552 | LOOPX(OP_NEXT); |
4553 | ||
4554 | case KEY_ne: | |
4555 | Eop(OP_SNE); | |
4556 | ||
a0d0e21e | 4557 | case KEY_no: |
3280af22 | 4558 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4559 | yyerror("\"no\" not allowed in expression"); |
4560 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4561 | s = force_version(s, FALSE); |
a0d0e21e LW |
4562 | yylval.ival = 0; |
4563 | OPERATOR(USE); | |
4564 | ||
4565 | case KEY_not: | |
2d2e263d LW |
4566 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4567 | FUN1(OP_NOT); | |
4568 | else | |
4569 | OPERATOR(NOTOP); | |
a0d0e21e | 4570 | |
79072805 | 4571 | case KEY_open: |
93a17b20 | 4572 | s = skipspace(s); |
7e2040f0 | 4573 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4574 | char *t; |
7e2040f0 | 4575 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4576 | t = skipspace(d); |
e476b1b5 GS |
4577 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4578 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4579 | "Precedence problem: open %.*s should be open(%.*s)", |
4580 | d-s,s, d-s,s); | |
93a17b20 | 4581 | } |
a0d0e21e | 4582 | LOP(OP_OPEN,XTERM); |
79072805 | 4583 | |
463ee0b2 | 4584 | case KEY_or: |
a0d0e21e | 4585 | yylval.ival = OP_OR; |
463ee0b2 LW |
4586 | OPERATOR(OROP); |
4587 | ||
79072805 LW |
4588 | case KEY_ord: |
4589 | UNI(OP_ORD); | |
4590 | ||
4591 | case KEY_oct: | |
4592 | UNI(OP_OCT); | |
4593 | ||
4594 | case KEY_opendir: | |
a0d0e21e | 4595 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4596 | |
4597 | case KEY_print: | |
3280af22 | 4598 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4599 | LOP(OP_PRINT,XREF); |
79072805 LW |
4600 | |
4601 | case KEY_printf: | |
3280af22 | 4602 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4603 | LOP(OP_PRTF,XREF); |
79072805 | 4604 | |
c07a80fd | 4605 | case KEY_prototype: |
4606 | UNI(OP_PROTOTYPE); | |
4607 | ||
79072805 | 4608 | case KEY_push: |
a0d0e21e | 4609 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4610 | |
4611 | case KEY_pop: | |
4612 | UNI(OP_POP); | |
4613 | ||
a0d0e21e LW |
4614 | case KEY_pos: |
4615 | UNI(OP_POS); | |
4e553d73 | 4616 | |
79072805 | 4617 | case KEY_pack: |
a0d0e21e | 4618 | LOP(OP_PACK,XTERM); |
79072805 LW |
4619 | |
4620 | case KEY_package: | |
a0d0e21e | 4621 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4622 | OPERATOR(PACKAGE); |
4623 | ||
4624 | case KEY_pipe: | |
a0d0e21e | 4625 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4626 | |
4627 | case KEY_q: | |
09bef843 | 4628 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4629 | if (!s) |
85e6fe83 | 4630 | missingterm((char*)0); |
79072805 LW |
4631 | yylval.ival = OP_CONST; |
4632 | TERM(sublex_start()); | |
4633 | ||
a0d0e21e LW |
4634 | case KEY_quotemeta: |
4635 | UNI(OP_QUOTEMETA); | |
4636 | ||
8990e307 | 4637 | case KEY_qw: |
09bef843 | 4638 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4639 | if (!s) |
85e6fe83 | 4640 | missingterm((char*)0); |
8127e0e3 GS |
4641 | force_next(')'); |
4642 | if (SvCUR(PL_lex_stuff)) { | |
4643 | OP *words = Nullop; | |
4644 | int warned = 0; | |
3280af22 | 4645 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4646 | while (len) { |
7948272d | 4647 | SV *sv; |
8127e0e3 GS |
4648 | for (; isSPACE(*d) && len; --len, ++d) ; |
4649 | if (len) { | |
4650 | char *b = d; | |
e476b1b5 | 4651 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4652 | for (; !isSPACE(*d) && len; --len, ++d) { |
4653 | if (*d == ',') { | |
e476b1b5 | 4654 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4655 | "Possible attempt to separate words with commas"); |
4656 | ++warned; | |
4657 | } | |
4658 | else if (*d == '#') { | |
e476b1b5 | 4659 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4660 | "Possible attempt to put comments in qw() list"); |
4661 | ++warned; | |
4662 | } | |
4663 | } | |
4664 | } | |
4665 | else { | |
4666 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4667 | } | |
7948272d NIS |
4668 | sv = newSVpvn(b, d-b); |
4669 | if (DO_UTF8(PL_lex_stuff)) | |
4670 | SvUTF8_on(sv); | |
8127e0e3 | 4671 | words = append_elem(OP_LIST, words, |
7948272d | 4672 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4673 | } |
4674 | } | |
8127e0e3 GS |
4675 | if (words) { |
4676 | PL_nextval[PL_nexttoke].opval = words; | |
4677 | force_next(THING); | |
4678 | } | |
55497cff | 4679 | } |
37fd879b | 4680 | if (PL_lex_stuff) { |
8127e0e3 | 4681 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4682 | PL_lex_stuff = Nullsv; |
4683 | } | |
3280af22 | 4684 | PL_expect = XTERM; |
8127e0e3 | 4685 | TOKEN('('); |
8990e307 | 4686 | |
79072805 | 4687 | case KEY_qq: |
09bef843 | 4688 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4689 | if (!s) |
85e6fe83 | 4690 | missingterm((char*)0); |
a0d0e21e | 4691 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4692 | if (SvIVX(PL_lex_stuff) == '\'') |
4693 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4694 | TERM(sublex_start()); |
4695 | ||
8782bef2 GB |
4696 | case KEY_qr: |
4697 | s = scan_pat(s,OP_QR); | |
4698 | TERM(sublex_start()); | |
4699 | ||
79072805 | 4700 | case KEY_qx: |
09bef843 | 4701 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4702 | if (!s) |
85e6fe83 | 4703 | missingterm((char*)0); |
79072805 LW |
4704 | yylval.ival = OP_BACKTICK; |
4705 | set_csh(); | |
4706 | TERM(sublex_start()); | |
4707 | ||
4708 | case KEY_return: | |
4709 | OLDLOP(OP_RETURN); | |
4710 | ||
4711 | case KEY_require: | |
a7cb1f99 | 4712 | s = skipspace(s); |
e759cc13 RGS |
4713 | if (isDIGIT(*s)) { |
4714 | s = force_version(s, FALSE); | |
a7cb1f99 | 4715 | } |
e759cc13 RGS |
4716 | else if (*s != 'v' || !isDIGIT(s[1]) |
4717 | || (s = force_version(s, TRUE), *s == 'v')) | |
4718 | { | |
a7cb1f99 GS |
4719 | *PL_tokenbuf = '\0'; |
4720 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4721 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4722 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4723 | else if (*s == '<') | |
4724 | yyerror("<> should be quotes"); | |
4725 | } | |
463ee0b2 | 4726 | UNI(OP_REQUIRE); |
79072805 LW |
4727 | |
4728 | case KEY_reset: | |
4729 | UNI(OP_RESET); | |
4730 | ||
4731 | case KEY_redo: | |
a0d0e21e | 4732 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4733 | LOOPX(OP_REDO); |
4734 | ||
4735 | case KEY_rename: | |
a0d0e21e | 4736 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4737 | |
4738 | case KEY_rand: | |
4739 | UNI(OP_RAND); | |
4740 | ||
4741 | case KEY_rmdir: | |
4742 | UNI(OP_RMDIR); | |
4743 | ||
4744 | case KEY_rindex: | |
a0d0e21e | 4745 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4746 | |
4747 | case KEY_read: | |
a0d0e21e | 4748 | LOP(OP_READ,XTERM); |
79072805 LW |
4749 | |
4750 | case KEY_readdir: | |
4751 | UNI(OP_READDIR); | |
4752 | ||
93a17b20 LW |
4753 | case KEY_readline: |
4754 | set_csh(); | |
4755 | UNI(OP_READLINE); | |
4756 | ||
4757 | case KEY_readpipe: | |
4758 | set_csh(); | |
4759 | UNI(OP_BACKTICK); | |
4760 | ||
79072805 LW |
4761 | case KEY_rewinddir: |
4762 | UNI(OP_REWINDDIR); | |
4763 | ||
4764 | case KEY_recv: | |
a0d0e21e | 4765 | LOP(OP_RECV,XTERM); |
79072805 LW |
4766 | |
4767 | case KEY_reverse: | |
a0d0e21e | 4768 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4769 | |
4770 | case KEY_readlink: | |
4771 | UNI(OP_READLINK); | |
4772 | ||
4773 | case KEY_ref: | |
4774 | UNI(OP_REF); | |
4775 | ||
4776 | case KEY_s: | |
4777 | s = scan_subst(s); | |
4778 | if (yylval.opval) | |
4779 | TERM(sublex_start()); | |
4780 | else | |
4781 | TOKEN(1); /* force error */ | |
4782 | ||
a0d0e21e LW |
4783 | case KEY_chomp: |
4784 | UNI(OP_CHOMP); | |
4e553d73 | 4785 | |
79072805 LW |
4786 | case KEY_scalar: |
4787 | UNI(OP_SCALAR); | |
4788 | ||
4789 | case KEY_select: | |
a0d0e21e | 4790 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4791 | |
4792 | case KEY_seek: | |
a0d0e21e | 4793 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4794 | |
4795 | case KEY_semctl: | |
a0d0e21e | 4796 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4797 | |
4798 | case KEY_semget: | |
a0d0e21e | 4799 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4800 | |
4801 | case KEY_semop: | |
a0d0e21e | 4802 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4803 | |
4804 | case KEY_send: | |
a0d0e21e | 4805 | LOP(OP_SEND,XTERM); |
79072805 LW |
4806 | |
4807 | case KEY_setpgrp: | |
a0d0e21e | 4808 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4809 | |
4810 | case KEY_setpriority: | |
a0d0e21e | 4811 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4812 | |
4813 | case KEY_sethostent: | |
ff68c719 | 4814 | UNI(OP_SHOSTENT); |
79072805 LW |
4815 | |
4816 | case KEY_setnetent: | |
ff68c719 | 4817 | UNI(OP_SNETENT); |
79072805 LW |
4818 | |
4819 | case KEY_setservent: | |
ff68c719 | 4820 | UNI(OP_SSERVENT); |
79072805 LW |
4821 | |
4822 | case KEY_setprotoent: | |
ff68c719 | 4823 | UNI(OP_SPROTOENT); |
79072805 LW |
4824 | |
4825 | case KEY_setpwent: | |
4826 | FUN0(OP_SPWENT); | |
4827 | ||
4828 | case KEY_setgrent: | |
4829 | FUN0(OP_SGRENT); | |
4830 | ||
4831 | case KEY_seekdir: | |
a0d0e21e | 4832 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4833 | |
4834 | case KEY_setsockopt: | |
a0d0e21e | 4835 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4836 | |
4837 | case KEY_shift: | |
4838 | UNI(OP_SHIFT); | |
4839 | ||
4840 | case KEY_shmctl: | |
a0d0e21e | 4841 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4842 | |
4843 | case KEY_shmget: | |
a0d0e21e | 4844 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4845 | |
4846 | case KEY_shmread: | |
a0d0e21e | 4847 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4848 | |
4849 | case KEY_shmwrite: | |
a0d0e21e | 4850 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4851 | |
4852 | case KEY_shutdown: | |
a0d0e21e | 4853 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4854 | |
4855 | case KEY_sin: | |
4856 | UNI(OP_SIN); | |
4857 | ||
4858 | case KEY_sleep: | |
4859 | UNI(OP_SLEEP); | |
4860 | ||
4861 | case KEY_socket: | |
a0d0e21e | 4862 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4863 | |
4864 | case KEY_socketpair: | |
a0d0e21e | 4865 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4866 | |
4867 | case KEY_sort: | |
3280af22 | 4868 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4869 | s = skipspace(s); |
4870 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4871 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4872 | PL_expect = XTERM; |
15f0808c | 4873 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4874 | LOP(OP_SORT,XREF); |
79072805 LW |
4875 | |
4876 | case KEY_split: | |
a0d0e21e | 4877 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4878 | |
4879 | case KEY_sprintf: | |
a0d0e21e | 4880 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4881 | |
4882 | case KEY_splice: | |
a0d0e21e | 4883 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4884 | |
4885 | case KEY_sqrt: | |
4886 | UNI(OP_SQRT); | |
4887 | ||
4888 | case KEY_srand: | |
4889 | UNI(OP_SRAND); | |
4890 | ||
4891 | case KEY_stat: | |
4892 | UNI(OP_STAT); | |
4893 | ||
4894 | case KEY_study: | |
79072805 LW |
4895 | UNI(OP_STUDY); |
4896 | ||
4897 | case KEY_substr: | |
a0d0e21e | 4898 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4899 | |
4900 | case KEY_format: | |
4901 | case KEY_sub: | |
93a17b20 | 4902 | really_sub: |
09bef843 | 4903 | { |
3280af22 | 4904 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 4905 | SSize_t tboffset = 0; |
09bef843 SB |
4906 | expectation attrful; |
4907 | bool have_name, have_proto; | |
4908 | int key = tmp; | |
4909 | ||
4910 | s = skipspace(s); | |
4911 | ||
7e2040f0 | 4912 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4913 | (*s == ':' && s[1] == ':')) |
4914 | { | |
4915 | PL_expect = XBLOCK; | |
4916 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4917 | /* remember buffer pos'n for later force_word */ |
4918 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4919 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4920 | if (strchr(tmpbuf, ':')) | |
4921 | sv_setpv(PL_subname, tmpbuf); | |
4922 | else { | |
4923 | sv_setsv(PL_subname,PL_curstname); | |
4924 | sv_catpvn(PL_subname,"::",2); | |
4925 | sv_catpvn(PL_subname,tmpbuf,len); | |
4926 | } | |
4927 | s = skipspace(d); | |
4928 | have_name = TRUE; | |
4929 | } | |
463ee0b2 | 4930 | else { |
09bef843 SB |
4931 | if (key == KEY_my) |
4932 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4933 | PL_expect = XTERMBLOCK; | |
4934 | attrful = XATTRTERM; | |
4935 | sv_setpv(PL_subname,"?"); | |
4936 | have_name = FALSE; | |
463ee0b2 | 4937 | } |
4633a7c4 | 4938 | |
09bef843 SB |
4939 | if (key == KEY_format) { |
4940 | if (*s == '=') | |
4941 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4942 | if (have_name) | |
b1b65b59 JH |
4943 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4944 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4945 | OPERATOR(FORMAT); |
4946 | } | |
79072805 | 4947 | |
09bef843 SB |
4948 | /* Look for a prototype */ |
4949 | if (*s == '(') { | |
4950 | char *p; | |
4951 | ||
4952 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 4953 | if (!s) |
09bef843 | 4954 | Perl_croak(aTHX_ "Prototype not terminated"); |
09bef843 SB |
4955 | /* strip spaces */ |
4956 | d = SvPVX(PL_lex_stuff); | |
4957 | tmp = 0; | |
4958 | for (p = d; *p; ++p) { | |
4959 | if (!isSPACE(*p)) | |
4960 | d[tmp++] = *p; | |
4961 | } | |
4962 | d[tmp] = '\0'; | |
4963 | SvCUR(PL_lex_stuff) = tmp; | |
4964 | have_proto = TRUE; | |
68dc0745 | 4965 | |
09bef843 | 4966 | s = skipspace(s); |
4633a7c4 | 4967 | } |
09bef843 SB |
4968 | else |
4969 | have_proto = FALSE; | |
4970 | ||
4971 | if (*s == ':' && s[1] != ':') | |
4972 | PL_expect = attrful; | |
4973 | ||
4974 | if (have_proto) { | |
b1b65b59 JH |
4975 | PL_nextval[PL_nexttoke].opval = |
4976 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4977 | PL_lex_stuff = Nullsv; |
4978 | force_next(THING); | |
68dc0745 | 4979 | } |
09bef843 SB |
4980 | if (!have_name) { |
4981 | sv_setpv(PL_subname,"__ANON__"); | |
4982 | TOKEN(ANONSUB); | |
4633a7c4 | 4983 | } |
b1b65b59 JH |
4984 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4985 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4986 | if (key == KEY_my) |
4987 | TOKEN(MYSUB); | |
4988 | TOKEN(SUB); | |
4633a7c4 | 4989 | } |
79072805 LW |
4990 | |
4991 | case KEY_system: | |
4992 | set_csh(); | |
a0d0e21e | 4993 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4994 | |
4995 | case KEY_symlink: | |
a0d0e21e | 4996 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4997 | |
4998 | case KEY_syscall: | |
a0d0e21e | 4999 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5000 | |
c07a80fd | 5001 | case KEY_sysopen: |
5002 | LOP(OP_SYSOPEN,XTERM); | |
5003 | ||
137443ea | 5004 | case KEY_sysseek: |
5005 | LOP(OP_SYSSEEK,XTERM); | |
5006 | ||
79072805 | 5007 | case KEY_sysread: |
a0d0e21e | 5008 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5009 | |
5010 | case KEY_syswrite: | |
a0d0e21e | 5011 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5012 | |
5013 | case KEY_tr: | |
5014 | s = scan_trans(s); | |
5015 | TERM(sublex_start()); | |
5016 | ||
5017 | case KEY_tell: | |
5018 | UNI(OP_TELL); | |
5019 | ||
5020 | case KEY_telldir: | |
5021 | UNI(OP_TELLDIR); | |
5022 | ||
463ee0b2 | 5023 | case KEY_tie: |
a0d0e21e | 5024 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5025 | |
c07a80fd | 5026 | case KEY_tied: |
5027 | UNI(OP_TIED); | |
5028 | ||
79072805 LW |
5029 | case KEY_time: |
5030 | FUN0(OP_TIME); | |
5031 | ||
5032 | case KEY_times: | |
5033 | FUN0(OP_TMS); | |
5034 | ||
5035 | case KEY_truncate: | |
a0d0e21e | 5036 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5037 | |
5038 | case KEY_uc: | |
5039 | UNI(OP_UC); | |
5040 | ||
5041 | case KEY_ucfirst: | |
5042 | UNI(OP_UCFIRST); | |
5043 | ||
463ee0b2 LW |
5044 | case KEY_untie: |
5045 | UNI(OP_UNTIE); | |
5046 | ||
79072805 | 5047 | case KEY_until: |
57843af0 | 5048 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5049 | OPERATOR(UNTIL); |
5050 | ||
5051 | case KEY_unless: | |
57843af0 | 5052 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5053 | OPERATOR(UNLESS); |
5054 | ||
5055 | case KEY_unlink: | |
a0d0e21e | 5056 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5057 | |
5058 | case KEY_undef: | |
5059 | UNI(OP_UNDEF); | |
5060 | ||
5061 | case KEY_unpack: | |
a0d0e21e | 5062 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5063 | |
5064 | case KEY_utime: | |
a0d0e21e | 5065 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5066 | |
5067 | case KEY_umask: | |
5068 | UNI(OP_UMASK); | |
5069 | ||
5070 | case KEY_unshift: | |
a0d0e21e LW |
5071 | LOP(OP_UNSHIFT,XTERM); |
5072 | ||
5073 | case KEY_use: | |
3280af22 | 5074 | if (PL_expect != XSTATE) |
a0d0e21e | 5075 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5076 | s = skipspace(s); |
a7cb1f99 | 5077 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5078 | s = force_version(s, TRUE); |
a7cb1f99 | 5079 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5080 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5081 | force_next(WORD); |
5082 | } | |
e759cc13 RGS |
5083 | else if (*s == 'v') { |
5084 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5085 | s = force_version(s, FALSE); | |
5086 | } | |
89bfa8cd | 5087 | } |
5088 | else { | |
5089 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5090 | s = force_version(s, FALSE); |
89bfa8cd | 5091 | } |
a0d0e21e LW |
5092 | yylval.ival = 1; |
5093 | OPERATOR(USE); | |
79072805 LW |
5094 | |
5095 | case KEY_values: | |
5096 | UNI(OP_VALUES); | |
5097 | ||
5098 | case KEY_vec: | |
a0d0e21e | 5099 | LOP(OP_VEC,XTERM); |
79072805 LW |
5100 | |
5101 | case KEY_while: | |
57843af0 | 5102 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5103 | OPERATOR(WHILE); |
5104 | ||
5105 | case KEY_warn: | |
3280af22 | 5106 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5107 | LOP(OP_WARN,XTERM); |
79072805 LW |
5108 | |
5109 | case KEY_wait: | |
5110 | FUN0(OP_WAIT); | |
5111 | ||
5112 | case KEY_waitpid: | |
a0d0e21e | 5113 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5114 | |
5115 | case KEY_wantarray: | |
5116 | FUN0(OP_WANTARRAY); | |
5117 | ||
5118 | case KEY_write: | |
9d116dd7 JH |
5119 | #ifdef EBCDIC |
5120 | { | |
df3728a2 JH |
5121 | char ctl_l[2]; |
5122 | ctl_l[0] = toCTRL('L'); | |
5123 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5124 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5125 | } | |
5126 | #else | |
5127 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5128 | #endif | |
79072805 LW |
5129 | UNI(OP_ENTERWRITE); |
5130 | ||
5131 | case KEY_x: | |
3280af22 | 5132 | if (PL_expect == XOPERATOR) |
79072805 LW |
5133 | Mop(OP_REPEAT); |
5134 | check_uni(); | |
5135 | goto just_a_word; | |
5136 | ||
a0d0e21e LW |
5137 | case KEY_xor: |
5138 | yylval.ival = OP_XOR; | |
5139 | OPERATOR(OROP); | |
5140 | ||
79072805 LW |
5141 | case KEY_y: |
5142 | s = scan_trans(s); | |
5143 | TERM(sublex_start()); | |
5144 | } | |
49dc05e3 | 5145 | }} |
79072805 | 5146 | } |
bf4acbe4 GS |
5147 | #ifdef __SC__ |
5148 | #pragma segment Main | |
5149 | #endif | |
79072805 | 5150 | |
e930465f JH |
5151 | static int |
5152 | S_pending_ident(pTHX) | |
8eceec63 SC |
5153 | { |
5154 | register char *d; | |
5155 | register I32 tmp; | |
5156 | /* pit holds the identifier we read and pending_ident is reset */ | |
5157 | char pit = PL_pending_ident; | |
5158 | PL_pending_ident = 0; | |
5159 | ||
5160 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5161 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5162 | ||
5163 | /* if we're in a my(), we can't allow dynamics here. | |
5164 | $foo'bar has already been turned into $foo::bar, so | |
5165 | just check for colons. | |
5166 | ||
5167 | if it's a legal name, the OP is a PADANY. | |
5168 | */ | |
5169 | if (PL_in_my) { | |
5170 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5171 | if (strchr(PL_tokenbuf,':')) | |
5172 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5173 | "variable %s in \"our\"", | |
5174 | PL_tokenbuf)); | |
5175 | tmp = pad_allocmy(PL_tokenbuf); | |
5176 | } | |
5177 | else { | |
5178 | if (strchr(PL_tokenbuf,':')) | |
5179 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5180 | ||
5181 | yylval.opval = newOP(OP_PADANY, 0); | |
5182 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
5183 | return PRIVATEREF; | |
5184 | } | |
5185 | } | |
5186 | ||
5187 | /* | |
5188 | build the ops for accesses to a my() variable. | |
5189 | ||
5190 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5191 | then used in a comparison. This catches most, but not | |
5192 | all cases. For instance, it catches | |
5193 | sort { my($a); $a <=> $b } | |
5194 | but not | |
5195 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5196 | (although why you'd do that is anyone's guess). | |
5197 | */ | |
5198 | ||
5199 | if (!strchr(PL_tokenbuf,':')) { | |
4d1ff10f | 5200 | #ifdef USE_5005THREADS |
8eceec63 SC |
5201 | /* Check for single character per-thread SVs */ |
5202 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' | |
5203 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
5204 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
5205 | { | |
5206 | yylval.opval = newOP(OP_THREADSV, 0); | |
5207 | yylval.opval->op_targ = tmp; | |
5208 | return PRIVATEREF; | |
5209 | } | |
4d1ff10f | 5210 | #endif /* USE_5005THREADS */ |
8eceec63 SC |
5211 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
5212 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; | |
5213 | /* might be an "our" variable" */ | |
5214 | if (SvFLAGS(namesv) & SVpad_OUR) { | |
5215 | /* build ops for a bareword */ | |
5216 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); | |
5217 | sv_catpvn(sym, "::", 2); | |
5218 | sv_catpv(sym, PL_tokenbuf+1); | |
5219 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5220 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5221 | gv_fetchpv(SvPVX(sym), | |
5222 | (PL_in_eval | |
5223 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
5224 | : TRUE | |
5225 | ), | |
5226 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5227 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5228 | : SVt_PVHV)); | |
5229 | return WORD; | |
5230 | } | |
5231 | ||
5232 | /* if it's a sort block and they're naming $a or $b */ | |
5233 | if (PL_last_lop_op == OP_SORT && | |
5234 | PL_tokenbuf[0] == '$' && | |
5235 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5236 | && !PL_tokenbuf[2]) | |
5237 | { | |
5238 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5239 | d < PL_bufend && *d != '\n'; | |
5240 | d++) | |
5241 | { | |
5242 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5243 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5244 | PL_tokenbuf); | |
5245 | } | |
5246 | } | |
5247 | } | |
5248 | ||
5249 | yylval.opval = newOP(OP_PADANY, 0); | |
5250 | yylval.opval->op_targ = tmp; | |
5251 | return PRIVATEREF; | |
5252 | } | |
5253 | } | |
5254 | ||
5255 | /* | |
5256 | Whine if they've said @foo in a doublequoted string, | |
5257 | and @foo isn't a variable we can find in the symbol | |
5258 | table. | |
5259 | */ | |
5260 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5261 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5262 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5263 | && ckWARN(WARN_AMBIGUOUS)) | |
5264 | { | |
5265 | /* Downgraded from fatal to warning 20000522 mjd */ | |
5266 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
5267 | "Possible unintended interpolation of %s in string", | |
5268 | PL_tokenbuf); | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | /* build ops for a bareword */ | |
5273 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5274 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5275 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5276 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5277 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5278 | : SVt_PVHV)); | |
5279 | return WORD; | |
5280 | } | |
5281 | ||
79072805 | 5282 | I32 |
864dbfa3 | 5283 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5284 | { |
5285 | switch (*d) { | |
5286 | case '_': | |
5287 | if (d[1] == '_') { | |
a0d0e21e | 5288 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5289 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5290 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5291 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5292 | if (strEQ(d,"__END__")) return KEY___END__; |
5293 | } | |
5294 | break; | |
8990e307 LW |
5295 | case 'A': |
5296 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5297 | break; | |
79072805 | 5298 | case 'a': |
463ee0b2 LW |
5299 | switch (len) { |
5300 | case 3: | |
a0d0e21e LW |
5301 | if (strEQ(d,"and")) return -KEY_and; |
5302 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5303 | break; |
463ee0b2 | 5304 | case 5: |
a0d0e21e LW |
5305 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5306 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5307 | break; |
5308 | case 6: | |
a0d0e21e | 5309 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5310 | break; |
5311 | } | |
79072805 LW |
5312 | break; |
5313 | case 'B': | |
5314 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5315 | break; |
79072805 | 5316 | case 'b': |
a0d0e21e LW |
5317 | if (strEQ(d,"bless")) return -KEY_bless; |
5318 | if (strEQ(d,"bind")) return -KEY_bind; | |
5319 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5320 | break; | |
5321 | case 'C': | |
5322 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5323 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5324 | break; |
5325 | case 'c': | |
5326 | switch (len) { | |
5327 | case 3: | |
a0d0e21e LW |
5328 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5329 | if (strEQ(d,"chr")) return -KEY_chr; | |
5330 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5331 | break; |
5332 | case 4: | |
77bc9082 | 5333 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5334 | break; |
5335 | case 5: | |
a0d0e21e LW |
5336 | if (strEQ(d,"close")) return -KEY_close; |
5337 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5338 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5339 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5340 | if (strEQ(d,"chown")) return -KEY_chown; | |
5341 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5342 | break; |
5343 | case 6: | |
a0d0e21e LW |
5344 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5345 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5346 | break; |
5347 | case 7: | |
a0d0e21e | 5348 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5349 | break; |
5350 | case 8: | |
a0d0e21e LW |
5351 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5352 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5353 | break; |
5354 | } | |
5355 | break; | |
ed6116ce LW |
5356 | case 'D': |
5357 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5358 | break; | |
79072805 LW |
5359 | case 'd': |
5360 | switch (len) { | |
5361 | case 2: | |
5362 | if (strEQ(d,"do")) return KEY_do; | |
5363 | break; | |
5364 | case 3: | |
a0d0e21e | 5365 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5366 | break; |
5367 | case 4: | |
a0d0e21e | 5368 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5369 | break; |
5370 | case 6: | |
5371 | if (strEQ(d,"delete")) return KEY_delete; | |
5372 | break; | |
5373 | case 7: | |
5374 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5375 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5376 | break; |
5377 | case 8: | |
a0d0e21e | 5378 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5379 | break; |
5380 | } | |
5381 | break; | |
5382 | case 'E': | |
79072805 LW |
5383 | if (strEQ(d,"END")) return KEY_END; |
5384 | break; | |
5385 | case 'e': | |
5386 | switch (len) { | |
5387 | case 2: | |
a0d0e21e | 5388 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5389 | break; |
5390 | case 3: | |
a0d0e21e LW |
5391 | if (strEQ(d,"eof")) return -KEY_eof; |
5392 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5393 | break; |
5394 | case 4: | |
5395 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5396 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5397 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5398 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5399 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5400 | break; |
5401 | case 5: | |
5402 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5403 | break; | |
a0d0e21e LW |
5404 | case 6: |
5405 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5406 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5407 | break; |
79072805 | 5408 | case 8: |
a0d0e21e LW |
5409 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5410 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5411 | break; |
5412 | case 9: | |
a0d0e21e | 5413 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5414 | break; |
5415 | case 10: | |
a0d0e21e LW |
5416 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5417 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5418 | break; |
5419 | case 11: | |
a0d0e21e | 5420 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5421 | break; |
a687059c | 5422 | } |
a687059c | 5423 | break; |
79072805 LW |
5424 | case 'f': |
5425 | switch (len) { | |
5426 | case 3: | |
5427 | if (strEQ(d,"for")) return KEY_for; | |
5428 | break; | |
5429 | case 4: | |
a0d0e21e | 5430 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5431 | break; |
5432 | case 5: | |
a0d0e21e LW |
5433 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5434 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5435 | break; |
5436 | case 6: | |
5437 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5438 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5439 | break; |
5440 | case 7: | |
5441 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5442 | break; | |
5443 | case 8: | |
a0d0e21e | 5444 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5445 | break; |
378cc40b | 5446 | } |
a687059c | 5447 | break; |
79072805 | 5448 | case 'g': |
a687059c LW |
5449 | if (strnEQ(d,"get",3)) { |
5450 | d += 3; | |
5451 | if (*d == 'p') { | |
79072805 LW |
5452 | switch (len) { |
5453 | case 7: | |
a0d0e21e LW |
5454 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5455 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5456 | break; |
5457 | case 8: | |
a0d0e21e LW |
5458 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5459 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5460 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5461 | break; |
5462 | case 11: | |
a0d0e21e LW |
5463 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5464 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5465 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5466 | break; |
5467 | case 14: | |
a0d0e21e | 5468 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5469 | break; |
5470 | case 16: | |
a0d0e21e | 5471 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5472 | break; |
5473 | } | |
a687059c LW |
5474 | } |
5475 | else if (*d == 'h') { | |
a0d0e21e LW |
5476 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5477 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5478 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5479 | } |
5480 | else if (*d == 'n') { | |
a0d0e21e LW |
5481 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5482 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5483 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5484 | } |
5485 | else if (*d == 's') { | |
a0d0e21e LW |
5486 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5487 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5488 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5489 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5490 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5491 | } |
5492 | else if (*d == 'g') { | |
a0d0e21e LW |
5493 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5494 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5495 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5496 | } |
5497 | else if (*d == 'l') { | |
a0d0e21e | 5498 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5499 | } |
a0d0e21e | 5500 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5501 | break; |
a687059c | 5502 | } |
79072805 LW |
5503 | switch (len) { |
5504 | case 2: | |
a0d0e21e LW |
5505 | if (strEQ(d,"gt")) return -KEY_gt; |
5506 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5507 | break; |
5508 | case 4: | |
5509 | if (strEQ(d,"grep")) return KEY_grep; | |
5510 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5511 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5512 | break; |
5513 | case 6: | |
a0d0e21e | 5514 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5515 | break; |
378cc40b | 5516 | } |
a687059c | 5517 | break; |
79072805 | 5518 | case 'h': |
a0d0e21e | 5519 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5520 | break; |
7d07dbc2 MB |
5521 | case 'I': |
5522 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5523 | break; | |
79072805 LW |
5524 | case 'i': |
5525 | switch (len) { | |
5526 | case 2: | |
5527 | if (strEQ(d,"if")) return KEY_if; | |
5528 | break; | |
5529 | case 3: | |
a0d0e21e | 5530 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5531 | break; |
5532 | case 5: | |
a0d0e21e LW |
5533 | if (strEQ(d,"index")) return -KEY_index; |
5534 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5535 | break; |
5536 | } | |
a687059c | 5537 | break; |
79072805 | 5538 | case 'j': |
a0d0e21e | 5539 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5540 | break; |
79072805 LW |
5541 | case 'k': |
5542 | if (len == 4) { | |
3a6a8333 | 5543 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5544 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5545 | } |
79072805 | 5546 | break; |
79072805 LW |
5547 | case 'l': |
5548 | switch (len) { | |
5549 | case 2: | |
a0d0e21e LW |
5550 | if (strEQ(d,"lt")) return -KEY_lt; |
5551 | if (strEQ(d,"le")) return -KEY_le; | |
5552 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5553 | break; |
5554 | case 3: | |
a0d0e21e | 5555 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5556 | break; |
5557 | case 4: | |
5558 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5559 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5560 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5561 | break; |
79072805 LW |
5562 | case 5: |
5563 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5564 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5565 | break; |
5566 | case 6: | |
a0d0e21e LW |
5567 | if (strEQ(d,"length")) return -KEY_length; |
5568 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5569 | break; |
5570 | case 7: | |
a0d0e21e | 5571 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5572 | break; |
5573 | case 9: | |
a0d0e21e | 5574 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5575 | break; |
5576 | } | |
a687059c | 5577 | break; |
79072805 LW |
5578 | case 'm': |
5579 | switch (len) { | |
5580 | case 1: return KEY_m; | |
93a17b20 LW |
5581 | case 2: |
5582 | if (strEQ(d,"my")) return KEY_my; | |
5583 | break; | |
a0d0e21e LW |
5584 | case 3: |
5585 | if (strEQ(d,"map")) return KEY_map; | |
5586 | break; | |
79072805 | 5587 | case 5: |
a0d0e21e | 5588 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5589 | break; |
5590 | case 6: | |
a0d0e21e LW |
5591 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5592 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5593 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5594 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5595 | break; |
5596 | } | |
a687059c | 5597 | break; |
79072805 LW |
5598 | case 'n': |
5599 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5600 | if (strEQ(d,"ne")) return -KEY_ne; |
5601 | if (strEQ(d,"not")) return -KEY_not; | |
5602 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5603 | break; |
79072805 LW |
5604 | case 'o': |
5605 | switch (len) { | |
463ee0b2 | 5606 | case 2: |
a0d0e21e | 5607 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5608 | break; |
79072805 | 5609 | case 3: |
a0d0e21e LW |
5610 | if (strEQ(d,"ord")) return -KEY_ord; |
5611 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5612 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5613 | break; |
5614 | case 4: | |
a0d0e21e | 5615 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5616 | break; |
5617 | case 7: | |
a0d0e21e | 5618 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5619 | break; |
fe14fcc3 | 5620 | } |
a687059c | 5621 | break; |
79072805 LW |
5622 | case 'p': |
5623 | switch (len) { | |
5624 | case 3: | |
4e553d73 | 5625 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5626 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5627 | break; |
5628 | case 4: | |
3a6a8333 | 5629 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5630 | if (strEQ(d,"pack")) return -KEY_pack; |
5631 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5632 | break; |
5633 | case 5: | |
5634 | if (strEQ(d,"print")) return KEY_print; | |
5635 | break; | |
5636 | case 6: | |
5637 | if (strEQ(d,"printf")) return KEY_printf; | |
5638 | break; | |
5639 | case 7: | |
5640 | if (strEQ(d,"package")) return KEY_package; | |
5641 | break; | |
c07a80fd | 5642 | case 9: |
5643 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5644 | } |
79072805 LW |
5645 | break; |
5646 | case 'q': | |
5647 | if (len <= 2) { | |
5648 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5649 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5650 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5651 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5652 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5653 | } |
a0d0e21e | 5654 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5655 | break; |
5656 | case 'r': | |
5657 | switch (len) { | |
5658 | case 3: | |
a0d0e21e | 5659 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5660 | break; |
5661 | case 4: | |
a0d0e21e LW |
5662 | if (strEQ(d,"read")) return -KEY_read; |
5663 | if (strEQ(d,"rand")) return -KEY_rand; | |
5664 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5665 | if (strEQ(d,"redo")) return KEY_redo; |
5666 | break; | |
5667 | case 5: | |
a0d0e21e LW |
5668 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5669 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5670 | break; |
5671 | case 6: | |
5672 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5673 | if (strEQ(d,"rename")) return -KEY_rename; |
5674 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5675 | break; |
5676 | case 7: | |
ec4ab249 | 5677 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5678 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5679 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5680 | break; |
5681 | case 8: | |
a0d0e21e LW |
5682 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5683 | if (strEQ(d,"readline")) return -KEY_readline; | |
5684 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5685 | break; |
5686 | case 9: | |
a0d0e21e | 5687 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5688 | break; |
a687059c | 5689 | } |
79072805 LW |
5690 | break; |
5691 | case 's': | |
a687059c | 5692 | switch (d[1]) { |
79072805 | 5693 | case 0: return KEY_s; |
a687059c | 5694 | case 'c': |
79072805 | 5695 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5696 | break; |
5697 | case 'e': | |
79072805 LW |
5698 | switch (len) { |
5699 | case 4: | |
a0d0e21e LW |
5700 | if (strEQ(d,"seek")) return -KEY_seek; |
5701 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5702 | break; |
5703 | case 5: | |
a0d0e21e | 5704 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5705 | break; |
5706 | case 6: | |
a0d0e21e LW |
5707 | if (strEQ(d,"select")) return -KEY_select; |
5708 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5709 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5710 | break; |
5711 | case 7: | |
a0d0e21e LW |
5712 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5713 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5714 | break; |
5715 | case 8: | |
a0d0e21e LW |
5716 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5717 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5718 | break; |
5719 | case 9: | |
a0d0e21e | 5720 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5721 | break; |
5722 | case 10: | |
a0d0e21e LW |
5723 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5724 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5725 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5726 | break; |
5727 | case 11: | |
a0d0e21e LW |
5728 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5729 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5730 | break; |
5731 | } | |
a687059c LW |
5732 | break; |
5733 | case 'h': | |
79072805 LW |
5734 | switch (len) { |
5735 | case 5: | |
3a6a8333 | 5736 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
5737 | break; |
5738 | case 6: | |
a0d0e21e LW |
5739 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5740 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5741 | break; |
5742 | case 7: | |
a0d0e21e | 5743 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5744 | break; |
5745 | case 8: | |
a0d0e21e LW |
5746 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5747 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5748 | break; |
5749 | } | |
a687059c LW |
5750 | break; |
5751 | case 'i': | |
a0d0e21e | 5752 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5753 | break; |
5754 | case 'l': | |
a0d0e21e | 5755 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5756 | break; |
5757 | case 'o': | |
79072805 | 5758 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5759 | if (strEQ(d,"socket")) return -KEY_socket; |
5760 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5761 | break; |
5762 | case 'p': | |
79072805 | 5763 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5764 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 5765 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
5766 | break; |
5767 | case 'q': | |
a0d0e21e | 5768 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5769 | break; |
5770 | case 'r': | |
a0d0e21e | 5771 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5772 | break; |
5773 | case 't': | |
a0d0e21e | 5774 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5775 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5776 | break; |
5777 | case 'u': | |
a0d0e21e | 5778 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5779 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5780 | break; |
5781 | case 'y': | |
79072805 LW |
5782 | switch (len) { |
5783 | case 6: | |
a0d0e21e | 5784 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5785 | break; |
5786 | case 7: | |
a0d0e21e LW |
5787 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5788 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5789 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5790 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5791 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5792 | break; |
5793 | case 8: | |
a0d0e21e | 5794 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5795 | break; |
a687059c | 5796 | } |
a687059c LW |
5797 | break; |
5798 | } | |
5799 | break; | |
79072805 LW |
5800 | case 't': |
5801 | switch (len) { | |
5802 | case 2: | |
5803 | if (strEQ(d,"tr")) return KEY_tr; | |
5804 | break; | |
463ee0b2 LW |
5805 | case 3: |
5806 | if (strEQ(d,"tie")) return KEY_tie; | |
5807 | break; | |
79072805 | 5808 | case 4: |
a0d0e21e | 5809 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5810 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5811 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5812 | break; |
5813 | case 5: | |
a0d0e21e | 5814 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5815 | break; |
5816 | case 7: | |
a0d0e21e | 5817 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5818 | break; |
5819 | case 8: | |
a0d0e21e | 5820 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5821 | break; |
378cc40b | 5822 | } |
a687059c | 5823 | break; |
79072805 LW |
5824 | case 'u': |
5825 | switch (len) { | |
5826 | case 2: | |
a0d0e21e LW |
5827 | if (strEQ(d,"uc")) return -KEY_uc; |
5828 | break; | |
5829 | case 3: | |
5830 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5831 | break; |
5832 | case 5: | |
5833 | if (strEQ(d,"undef")) return KEY_undef; | |
5834 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5835 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5836 | if (strEQ(d,"utime")) return -KEY_utime; |
5837 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5838 | break; |
5839 | case 6: | |
5840 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5841 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5842 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5843 | break; |
5844 | case 7: | |
3a6a8333 | 5845 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 5846 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5847 | break; |
a687059c LW |
5848 | } |
5849 | break; | |
79072805 | 5850 | case 'v': |
a0d0e21e LW |
5851 | if (strEQ(d,"values")) return -KEY_values; |
5852 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5853 | break; |
79072805 LW |
5854 | case 'w': |
5855 | switch (len) { | |
5856 | case 4: | |
a0d0e21e LW |
5857 | if (strEQ(d,"warn")) return -KEY_warn; |
5858 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5859 | break; |
5860 | case 5: | |
5861 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5862 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5863 | break; |
5864 | case 7: | |
a0d0e21e | 5865 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5866 | break; |
5867 | case 9: | |
a0d0e21e | 5868 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5869 | break; |
2f3197b3 | 5870 | } |
a687059c | 5871 | break; |
79072805 | 5872 | case 'x': |
a0d0e21e LW |
5873 | if (len == 1) return -KEY_x; |
5874 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5875 | break; |
79072805 LW |
5876 | case 'y': |
5877 | if (len == 1) return KEY_y; | |
5878 | break; | |
5879 | case 'z': | |
a687059c LW |
5880 | break; |
5881 | } | |
79072805 | 5882 | return 0; |
a687059c LW |
5883 | } |
5884 | ||
76e3520e | 5885 | STATIC void |
cea2e8a9 | 5886 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5887 | { |
2f3197b3 LW |
5888 | char *w; |
5889 | ||
d008e5eb | 5890 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
5891 | if (ckWARN(WARN_SYNTAX)) { |
5892 | int level = 1; | |
5893 | for (w = s+2; *w && level; w++) { | |
5894 | if (*w == '(') | |
5895 | ++level; | |
5896 | else if (*w == ')') | |
5897 | --level; | |
5898 | } | |
5899 | if (*w) | |
5900 | for (; *w && isSPACE(*w); w++) ; | |
5901 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5902 | Perl_warner(aTHX_ WARN_SYNTAX, |
5903 | "%s (...) interpreted as function",name); | |
d008e5eb | 5904 | } |
2f3197b3 | 5905 | } |
3280af22 | 5906 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5907 | s++; |
a687059c LW |
5908 | if (*s == '(') |
5909 | s++; | |
3280af22 | 5910 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5911 | s++; |
7e2040f0 | 5912 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5913 | w = s++; |
7e2040f0 | 5914 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5915 | s++; |
3280af22 | 5916 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5917 | s++; |
e929a76b | 5918 | if (*s == ',') { |
463ee0b2 | 5919 | int kw; |
e929a76b | 5920 | *s = '\0'; |
864dbfa3 | 5921 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5922 | *s = ','; |
463ee0b2 | 5923 | if (kw) |
e929a76b | 5924 | return; |
cea2e8a9 | 5925 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5926 | } |
5927 | } | |
5928 | } | |
5929 | ||
423cee85 JH |
5930 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5931 | Best used as sv=new_constant(..., sv, ...). | |
5932 | If s, pv are NULL, calls subroutine with one argument, | |
5933 | and type is used with error messages only. */ | |
5934 | ||
b3ac6de7 | 5935 | STATIC SV * |
dff6d3cd | 5936 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 5937 | const char *type) |
b3ac6de7 | 5938 | { |
b3ac6de7 | 5939 | dSP; |
3280af22 | 5940 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5941 | SV *res; |
b3ac6de7 IZ |
5942 | SV **cvp; |
5943 | SV *cv, *typesv; | |
f0af216f | 5944 | const char *why1, *why2, *why3; |
4e553d73 | 5945 | |
f0af216f | 5946 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
5947 | SV *msg; |
5948 | ||
f0af216f | 5949 | why2 = strEQ(key,"charnames") |
41ab332f | 5950 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 5951 | : ""; |
4e553d73 | 5952 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
5953 | (type ? type: "undef"), why2); |
5954 | ||
5955 | /* This is convoluted and evil ("goto considered harmful") | |
5956 | * but I do not understand the intricacies of all the different | |
5957 | * failure modes of %^H in here. The goal here is to make | |
5958 | * the most probable error message user-friendly. --jhi */ | |
5959 | ||
5960 | goto msgdone; | |
5961 | ||
423cee85 | 5962 | report: |
4e553d73 | 5963 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 5964 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 5965 | msgdone: |
423cee85 JH |
5966 | yyerror(SvPVX(msg)); |
5967 | SvREFCNT_dec(msg); | |
5968 | return sv; | |
5969 | } | |
b3ac6de7 IZ |
5970 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
5971 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5972 | why1 = "$^H{"; |
5973 | why2 = key; | |
f0af216f | 5974 | why3 = "} is not defined"; |
423cee85 | 5975 | goto report; |
b3ac6de7 IZ |
5976 | } |
5977 | sv_2mortal(sv); /* Parent created it permanently */ | |
5978 | cv = *cvp; | |
423cee85 JH |
5979 | if (!pv && s) |
5980 | pv = sv_2mortal(newSVpvn(s, len)); | |
5981 | if (type && pv) | |
5982 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5983 | else |
423cee85 | 5984 | typesv = &PL_sv_undef; |
4e553d73 | 5985 | |
e788e7d3 | 5986 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5987 | ENTER ; |
5988 | SAVETMPS; | |
4e553d73 | 5989 | |
423cee85 | 5990 | PUSHMARK(SP) ; |
a5845cb7 | 5991 | EXTEND(sp, 3); |
423cee85 JH |
5992 | if (pv) |
5993 | PUSHs(pv); | |
b3ac6de7 | 5994 | PUSHs(sv); |
423cee85 JH |
5995 | if (pv) |
5996 | PUSHs(typesv); | |
b3ac6de7 | 5997 | PUTBACK; |
423cee85 | 5998 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 5999 | |
423cee85 | 6000 | SPAGAIN ; |
4e553d73 | 6001 | |
423cee85 | 6002 | /* Check the eval first */ |
9b0e499b | 6003 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6004 | STRLEN n_a; |
6005 | sv_catpv(ERRSV, "Propagated"); | |
6006 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6007 | (void)POPs; |
423cee85 JH |
6008 | res = SvREFCNT_inc(sv); |
6009 | } | |
6010 | else { | |
6011 | res = POPs; | |
e1f15930 | 6012 | (void)SvREFCNT_inc(res); |
423cee85 | 6013 | } |
4e553d73 | 6014 | |
423cee85 JH |
6015 | PUTBACK ; |
6016 | FREETMPS ; | |
6017 | LEAVE ; | |
b3ac6de7 | 6018 | POPSTACK; |
4e553d73 | 6019 | |
b3ac6de7 | 6020 | if (!SvOK(res)) { |
423cee85 JH |
6021 | why1 = "Call to &{$^H{"; |
6022 | why2 = key; | |
f0af216f | 6023 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6024 | sv = res; |
6025 | goto report; | |
9b0e499b | 6026 | } |
423cee85 | 6027 | |
9b0e499b | 6028 | return res; |
b3ac6de7 | 6029 | } |
4e553d73 | 6030 | |
76e3520e | 6031 | STATIC char * |
cea2e8a9 | 6032 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6033 | { |
6034 | register char *d = dest; | |
8903cb82 | 6035 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6036 | for (;;) { |
8903cb82 | 6037 | if (d >= e) |
cea2e8a9 | 6038 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6039 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6040 | *d++ = *s++; |
7e2040f0 | 6041 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6042 | *d++ = ':'; |
6043 | *d++ = ':'; | |
6044 | s++; | |
6045 | } | |
c3e0f903 | 6046 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6047 | *d++ = *s++; |
6048 | *d++ = *s++; | |
6049 | } | |
fd400ab9 | 6050 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6051 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6052 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6053 | t += UTF8SKIP(t); |
6054 | if (d + (t - s) > e) | |
cea2e8a9 | 6055 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6056 | Copy(s, d, t - s, char); |
6057 | d += t - s; | |
6058 | s = t; | |
6059 | } | |
463ee0b2 LW |
6060 | else { |
6061 | *d = '\0'; | |
6062 | *slp = d - dest; | |
6063 | return s; | |
e929a76b | 6064 | } |
378cc40b LW |
6065 | } |
6066 | } | |
6067 | ||
76e3520e | 6068 | STATIC char * |
cea2e8a9 | 6069 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6070 | { |
6071 | register char *d; | |
8903cb82 | 6072 | register char *e; |
79072805 | 6073 | char *bracket = 0; |
748a9306 | 6074 | char funny = *s++; |
378cc40b | 6075 | |
a0d0e21e LW |
6076 | if (isSPACE(*s)) |
6077 | s = skipspace(s); | |
378cc40b | 6078 | d = dest; |
8903cb82 | 6079 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6080 | if (isDIGIT(*s)) { |
8903cb82 | 6081 | while (isDIGIT(*s)) { |
6082 | if (d >= e) | |
cea2e8a9 | 6083 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6084 | *d++ = *s++; |
8903cb82 | 6085 | } |
378cc40b LW |
6086 | } |
6087 | else { | |
463ee0b2 | 6088 | for (;;) { |
8903cb82 | 6089 | if (d >= e) |
cea2e8a9 | 6090 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6091 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6092 | *d++ = *s++; |
7e2040f0 | 6093 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6094 | *d++ = ':'; |
6095 | *d++ = ':'; | |
6096 | s++; | |
6097 | } | |
a0d0e21e | 6098 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6099 | *d++ = *s++; |
6100 | *d++ = *s++; | |
6101 | } | |
fd400ab9 | 6102 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6103 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6104 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6105 | t += UTF8SKIP(t); |
6106 | if (d + (t - s) > e) | |
cea2e8a9 | 6107 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6108 | Copy(s, d, t - s, char); |
6109 | d += t - s; | |
6110 | s = t; | |
6111 | } | |
463ee0b2 LW |
6112 | else |
6113 | break; | |
6114 | } | |
378cc40b LW |
6115 | } |
6116 | *d = '\0'; | |
6117 | d = dest; | |
79072805 | 6118 | if (*d) { |
3280af22 NIS |
6119 | if (PL_lex_state != LEX_NORMAL) |
6120 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6121 | return s; |
378cc40b | 6122 | } |
748a9306 | 6123 | if (*s == '$' && s[1] && |
7e2040f0 | 6124 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6125 | { |
4810e5ec | 6126 | return s; |
5cd24f17 | 6127 | } |
79072805 LW |
6128 | if (*s == '{') { |
6129 | bracket = s; | |
6130 | s++; | |
6131 | } | |
6132 | else if (ck_uni) | |
6133 | check_uni(); | |
93a17b20 | 6134 | if (s < send) |
79072805 LW |
6135 | *d = *s++; |
6136 | d[1] = '\0'; | |
2b92dfce | 6137 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6138 | *d = toCTRL(*s); |
6139 | s++; | |
de3bb511 | 6140 | } |
79072805 | 6141 | if (bracket) { |
748a9306 | 6142 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6143 | while (s < send) { |
6144 | char ch = *s++; | |
bf4acbe4 | 6145 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6146 | *d = ch; |
6147 | break; | |
6148 | } | |
6149 | } | |
748a9306 | 6150 | } |
7e2040f0 | 6151 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6152 | d++; |
a0ed51b3 LW |
6153 | if (UTF) { |
6154 | e = s; | |
155aba94 | 6155 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6156 | e += UTF8SKIP(e); |
fd400ab9 | 6157 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6158 | e += UTF8SKIP(e); |
6159 | } | |
6160 | Copy(s, d, e - s, char); | |
6161 | d += e - s; | |
6162 | s = e; | |
6163 | } | |
6164 | else { | |
2b92dfce | 6165 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6166 | *d++ = *s++; |
2b92dfce | 6167 | if (d >= e) |
cea2e8a9 | 6168 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6169 | } |
79072805 | 6170 | *d = '\0'; |
bf4acbe4 | 6171 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6172 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6173 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6174 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 6175 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 6176 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6177 | funny, dest, brack, funny, dest, brack); |
6178 | } | |
79072805 | 6179 | bracket++; |
a0be28da | 6180 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6181 | return s; |
6182 | } | |
4e553d73 NIS |
6183 | } |
6184 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6185 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6186 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6187 | && isALNUM(*s)) | |
6188 | { | |
6189 | d++; | |
6190 | while (isALNUM(*s) && d < e) { | |
6191 | *d++ = *s++; | |
6192 | } | |
6193 | if (d >= e) | |
cea2e8a9 | 6194 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6195 | *d = '\0'; |
79072805 LW |
6196 | } |
6197 | if (*s == '}') { | |
6198 | s++; | |
3280af22 NIS |
6199 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
6200 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
6201 | if (funny == '#') |
6202 | funny = '@'; | |
d008e5eb | 6203 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6204 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6205 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6206 | { |
cea2e8a9 | 6207 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
6208 | "Ambiguous use of %c{%s} resolved to %c%s", |
6209 | funny, dest, funny, dest); | |
6210 | } | |
6211 | } | |
79072805 LW |
6212 | } |
6213 | else { | |
6214 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6215 | *dest = '\0'; |
79072805 LW |
6216 | } |
6217 | } | |
3280af22 NIS |
6218 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6219 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6220 | return s; |
6221 | } | |
6222 | ||
cea2e8a9 GS |
6223 | void |
6224 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 6225 | { |
bbce6d69 | 6226 | if (ch == 'i') |
a0d0e21e | 6227 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6228 | else if (ch == 'g') |
6229 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6230 | else if (ch == 'c') |
6231 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6232 | else if (ch == 'o') |
6233 | *pmfl |= PMf_KEEP; | |
6234 | else if (ch == 'm') | |
6235 | *pmfl |= PMf_MULTILINE; | |
6236 | else if (ch == 's') | |
6237 | *pmfl |= PMf_SINGLELINE; | |
6238 | else if (ch == 'x') | |
6239 | *pmfl |= PMf_EXTENDED; | |
6240 | } | |
378cc40b | 6241 | |
76e3520e | 6242 | STATIC char * |
cea2e8a9 | 6243 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6244 | { |
79072805 LW |
6245 | PMOP *pm; |
6246 | char *s; | |
378cc40b | 6247 | |
09bef843 | 6248 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6249 | if (!s) |
cea2e8a9 | 6250 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6251 | |
8782bef2 | 6252 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6253 | if (PL_multi_open == '?') |
79072805 | 6254 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6255 | if(type == OP_QR) { |
6256 | while (*s && strchr("iomsx", *s)) | |
6257 | pmflag(&pm->op_pmflags,*s++); | |
6258 | } | |
6259 | else { | |
6260 | while (*s && strchr("iogcmsx", *s)) | |
6261 | pmflag(&pm->op_pmflags,*s++); | |
6262 | } | |
4633a7c4 | 6263 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6264 | |
3280af22 | 6265 | PL_lex_op = (OP*)pm; |
79072805 | 6266 | yylval.ival = OP_MATCH; |
378cc40b LW |
6267 | return s; |
6268 | } | |
6269 | ||
76e3520e | 6270 | STATIC char * |
cea2e8a9 | 6271 | S_scan_subst(pTHX_ char *start) |
79072805 | 6272 | { |
a0d0e21e | 6273 | register char *s; |
79072805 | 6274 | register PMOP *pm; |
4fdae800 | 6275 | I32 first_start; |
79072805 LW |
6276 | I32 es = 0; |
6277 | ||
79072805 LW |
6278 | yylval.ival = OP_NULL; |
6279 | ||
09bef843 | 6280 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6281 | |
37fd879b | 6282 | if (!s) |
cea2e8a9 | 6283 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6284 | |
3280af22 | 6285 | if (s[-1] == PL_multi_open) |
79072805 LW |
6286 | s--; |
6287 | ||
3280af22 | 6288 | first_start = PL_multi_start; |
09bef843 | 6289 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6290 | if (!s) { |
37fd879b | 6291 | if (PL_lex_stuff) { |
3280af22 | 6292 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6293 | PL_lex_stuff = Nullsv; |
6294 | } | |
cea2e8a9 | 6295 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6296 | } |
3280af22 | 6297 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6298 | |
79072805 | 6299 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6300 | while (*s) { |
a687059c LW |
6301 | if (*s == 'e') { |
6302 | s++; | |
2f3197b3 | 6303 | es++; |
a687059c | 6304 | } |
b3eb6a9b | 6305 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6306 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6307 | else |
6308 | break; | |
378cc40b | 6309 | } |
79072805 LW |
6310 | |
6311 | if (es) { | |
6312 | SV *repl; | |
0244c3a4 GS |
6313 | PL_sublex_info.super_bufptr = s; |
6314 | PL_sublex_info.super_bufend = PL_bufend; | |
6315 | PL_multi_end = 0; | |
79072805 | 6316 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6317 | repl = newSVpvn("",0); |
463ee0b2 | 6318 | while (es-- > 0) |
a0d0e21e | 6319 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6320 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6321 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6322 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6323 | SvEVALED_on(repl); |
3280af22 NIS |
6324 | SvREFCNT_dec(PL_lex_repl); |
6325 | PL_lex_repl = repl; | |
378cc40b | 6326 | } |
79072805 | 6327 | |
4633a7c4 | 6328 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6329 | PL_lex_op = (OP*)pm; |
79072805 | 6330 | yylval.ival = OP_SUBST; |
378cc40b LW |
6331 | return s; |
6332 | } | |
6333 | ||
76e3520e | 6334 | STATIC char * |
cea2e8a9 | 6335 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6336 | { |
a0d0e21e | 6337 | register char* s; |
11343788 | 6338 | OP *o; |
79072805 LW |
6339 | short *tbl; |
6340 | I32 squash; | |
a0ed51b3 | 6341 | I32 del; |
79072805 LW |
6342 | I32 complement; |
6343 | ||
6344 | yylval.ival = OP_NULL; | |
6345 | ||
09bef843 | 6346 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6347 | if (!s) |
cea2e8a9 | 6348 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6349 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6350 | s--; |
6351 | ||
09bef843 | 6352 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6353 | if (!s) { |
37fd879b | 6354 | if (PL_lex_stuff) { |
3280af22 | 6355 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6356 | PL_lex_stuff = Nullsv; |
6357 | } | |
cea2e8a9 | 6358 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6359 | } |
79072805 | 6360 | |
a0ed51b3 | 6361 | complement = del = squash = 0; |
6940069f | 6362 | while (strchr("cds", *s)) { |
395c3793 | 6363 | if (*s == 'c') |
79072805 | 6364 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6365 | else if (*s == 'd') |
a0ed51b3 LW |
6366 | del = OPpTRANS_DELETE; |
6367 | else if (*s == 's') | |
79072805 | 6368 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6369 | s++; |
6370 | } | |
8973db79 JH |
6371 | |
6372 | New(803, tbl, complement&&!del?258:256, short); | |
6373 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
7948272d NIS |
6374 | o->op_private = del|squash|complement| |
6375 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| | |
6376 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6377 | |
3280af22 | 6378 | PL_lex_op = o; |
79072805 LW |
6379 | yylval.ival = OP_TRANS; |
6380 | return s; | |
6381 | } | |
6382 | ||
76e3520e | 6383 | STATIC char * |
cea2e8a9 | 6384 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6385 | { |
6386 | SV *herewas; | |
6387 | I32 op_type = OP_SCALAR; | |
6388 | I32 len; | |
6389 | SV *tmpstr; | |
6390 | char term; | |
6391 | register char *d; | |
fc36a67e | 6392 | register char *e; |
4633a7c4 | 6393 | char *peek; |
3280af22 | 6394 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6395 | |
6396 | s += 2; | |
3280af22 NIS |
6397 | d = PL_tokenbuf; |
6398 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6399 | if (!outer) |
79072805 | 6400 | *d++ = '\n'; |
bf4acbe4 | 6401 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6402 | if (*peek && strchr("`'\"",*peek)) { |
6403 | s = peek; | |
79072805 | 6404 | term = *s++; |
3280af22 | 6405 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6406 | d += len; |
3280af22 | 6407 | if (s < PL_bufend) |
79072805 | 6408 | s++; |
79072805 LW |
6409 | } |
6410 | else { | |
6411 | if (*s == '\\') | |
6412 | s++, term = '\''; | |
6413 | else | |
6414 | term = '"'; | |
7e2040f0 | 6415 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6416 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6417 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6418 | if (d < e) |
6419 | *d++ = *s; | |
6420 | } | |
6421 | } | |
3280af22 | 6422 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6423 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6424 | *d++ = '\n'; |
6425 | *d = '\0'; | |
3280af22 | 6426 | len = d - PL_tokenbuf; |
6a27c188 | 6427 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6428 | d = strchr(s, '\r'); |
6429 | if (d) { | |
6430 | char *olds = s; | |
6431 | s = d; | |
3280af22 | 6432 | while (s < PL_bufend) { |
f63a84b2 LW |
6433 | if (*s == '\r') { |
6434 | *d++ = '\n'; | |
6435 | if (*++s == '\n') | |
6436 | s++; | |
6437 | } | |
6438 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6439 | *d++ = *s++; | |
6440 | s++; | |
6441 | } | |
6442 | else | |
6443 | *d++ = *s++; | |
6444 | } | |
6445 | *d = '\0'; | |
3280af22 NIS |
6446 | PL_bufend = d; |
6447 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6448 | s = olds; |
6449 | } | |
6450 | #endif | |
79072805 | 6451 | d = "\n"; |
3280af22 | 6452 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6453 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6454 | else |
79cb57f6 | 6455 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6456 | s += SvCUR(herewas); |
748a9306 | 6457 | |
8d6dde3e | 6458 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6459 | sv_upgrade(tmpstr, SVt_PVIV); |
6460 | if (term == '\'') { | |
79072805 | 6461 | op_type = OP_CONST; |
748a9306 LW |
6462 | SvIVX(tmpstr) = -1; |
6463 | } | |
6464 | else if (term == '`') { | |
79072805 | 6465 | op_type = OP_BACKTICK; |
748a9306 LW |
6466 | SvIVX(tmpstr) = '\\'; |
6467 | } | |
79072805 LW |
6468 | |
6469 | CLINE; | |
57843af0 | 6470 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6471 | PL_multi_open = PL_multi_close = '<'; |
6472 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6473 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6474 | char *bufptr = PL_sublex_info.super_bufptr; | |
6475 | char *bufend = PL_sublex_info.super_bufend; | |
6476 | char *olds = s - SvCUR(herewas); | |
6477 | s = strchr(bufptr, '\n'); | |
6478 | if (!s) | |
6479 | s = bufend; | |
6480 | d = s; | |
6481 | while (s < bufend && | |
6482 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6483 | if (*s++ == '\n') | |
57843af0 | 6484 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6485 | } |
6486 | if (s >= bufend) { | |
57843af0 | 6487 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6488 | missingterm(PL_tokenbuf); |
6489 | } | |
6490 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6491 | sv_setpvn(tmpstr,d+1,s-d); | |
6492 | s += len - 1; | |
6493 | sv_catpvn(herewas,s,bufend-s); | |
6494 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6495 | ||
6496 | s = olds; | |
6497 | goto retval; | |
6498 | } | |
6499 | else if (!outer) { | |
79072805 | 6500 | d = s; |
3280af22 NIS |
6501 | while (s < PL_bufend && |
6502 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6503 | if (*s++ == '\n') |
57843af0 | 6504 | CopLINE_inc(PL_curcop); |
79072805 | 6505 | } |
3280af22 | 6506 | if (s >= PL_bufend) { |
57843af0 | 6507 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6508 | missingterm(PL_tokenbuf); |
79072805 LW |
6509 | } |
6510 | sv_setpvn(tmpstr,d+1,s-d); | |
6511 | s += len - 1; | |
57843af0 | 6512 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6513 | |
3280af22 NIS |
6514 | sv_catpvn(herewas,s,PL_bufend-s); |
6515 | sv_setsv(PL_linestr,herewas); | |
6516 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6517 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6518 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6519 | } |
6520 | else | |
6521 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6522 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6523 | if (!outer || |
3280af22 | 6524 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6525 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6526 | missingterm(PL_tokenbuf); |
79072805 | 6527 | } |
57843af0 | 6528 | CopLINE_inc(PL_curcop); |
3280af22 | 6529 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6530 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6531 | #ifndef PERL_STRICT_CR |
3280af22 | 6532 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6533 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6534 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6535 | { |
3280af22 NIS |
6536 | PL_bufend[-2] = '\n'; |
6537 | PL_bufend--; | |
6538 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6539 | } |
3280af22 NIS |
6540 | else if (PL_bufend[-1] == '\r') |
6541 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6542 | } |
3280af22 NIS |
6543 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6544 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6545 | #endif |
3280af22 | 6546 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6547 | SV *sv = NEWSV(88,0); |
6548 | ||
93a17b20 | 6549 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6550 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6551 | (void)SvIOK_on(sv); |
6552 | SvIVX(sv) = 0; | |
57843af0 | 6553 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6554 | } |
3280af22 NIS |
6555 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6556 | s = PL_bufend - 1; | |
79072805 | 6557 | *s = ' '; |
3280af22 NIS |
6558 | sv_catsv(PL_linestr,herewas); |
6559 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6560 | } |
6561 | else { | |
3280af22 NIS |
6562 | s = PL_bufend; |
6563 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6564 | } |
6565 | } | |
79072805 | 6566 | s++; |
0244c3a4 | 6567 | retval: |
57843af0 | 6568 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6569 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6570 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6571 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6572 | } |
8990e307 | 6573 | SvREFCNT_dec(herewas); |
0064a8a9 | 6574 | if (UTF && !IN_BYTES && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) |
7948272d | 6575 | SvUTF8_on(tmpstr); |
3280af22 | 6576 | PL_lex_stuff = tmpstr; |
79072805 LW |
6577 | yylval.ival = op_type; |
6578 | return s; | |
6579 | } | |
6580 | ||
02aa26ce NT |
6581 | /* scan_inputsymbol |
6582 | takes: current position in input buffer | |
6583 | returns: new position in input buffer | |
6584 | side-effects: yylval and lex_op are set. | |
6585 | ||
6586 | This code handles: | |
6587 | ||
6588 | <> read from ARGV | |
6589 | <FH> read from filehandle | |
6590 | <pkg::FH> read from package qualified filehandle | |
6591 | <pkg'FH> read from package qualified filehandle | |
6592 | <$fh> read from filehandle in $fh | |
6593 | <*.h> filename glob | |
6594 | ||
6595 | */ | |
6596 | ||
76e3520e | 6597 | STATIC char * |
cea2e8a9 | 6598 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6599 | { |
02aa26ce | 6600 | register char *s = start; /* current position in buffer */ |
79072805 | 6601 | register char *d; |
fc36a67e | 6602 | register char *e; |
1b420867 | 6603 | char *end; |
79072805 LW |
6604 | I32 len; |
6605 | ||
3280af22 NIS |
6606 | d = PL_tokenbuf; /* start of temp holding space */ |
6607 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6608 | end = strchr(s, '\n'); |
6609 | if (!end) | |
6610 | end = PL_bufend; | |
6611 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6612 | |
6613 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6614 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6615 | */ |
6616 | ||
3280af22 | 6617 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6618 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6619 | if (s >= end) |
cea2e8a9 | 6620 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6621 | |
fc36a67e | 6622 | s++; |
02aa26ce NT |
6623 | |
6624 | /* check for <$fh> | |
6625 | Remember, only scalar variables are interpreted as filehandles by | |
6626 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6627 | treated as a glob() call. | |
6628 | This code makes use of the fact that except for the $ at the front, | |
6629 | a scalar variable and a filehandle look the same. | |
6630 | */ | |
4633a7c4 | 6631 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6632 | |
6633 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6634 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6635 | d++; |
02aa26ce NT |
6636 | |
6637 | /* If we've tried to read what we allow filehandles to look like, and | |
6638 | there's still text left, then it must be a glob() and not a getline. | |
6639 | Use scan_str to pull out the stuff between the <> and treat it | |
6640 | as nothing more than a string. | |
6641 | */ | |
6642 | ||
3280af22 | 6643 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6644 | yylval.ival = OP_GLOB; |
6645 | set_csh(); | |
09bef843 | 6646 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6647 | if (!s) |
cea2e8a9 | 6648 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6649 | return s; |
6650 | } | |
395c3793 | 6651 | else { |
02aa26ce | 6652 | /* we're in a filehandle read situation */ |
3280af22 | 6653 | d = PL_tokenbuf; |
02aa26ce NT |
6654 | |
6655 | /* turn <> into <ARGV> */ | |
79072805 LW |
6656 | if (!len) |
6657 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6658 | |
6659 | /* if <$fh>, create the ops to turn the variable into a | |
6660 | filehandle | |
6661 | */ | |
79072805 | 6662 | if (*d == '$') { |
a0d0e21e | 6663 | I32 tmp; |
02aa26ce NT |
6664 | |
6665 | /* try to find it in the pad for this block, otherwise find | |
6666 | add symbol table ops | |
6667 | */ | |
11343788 | 6668 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
f558d5af JH |
6669 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
6670 | if (SvFLAGS(namesv) & SVpad_OUR) { | |
6671 | SV *sym = sv_2mortal(newSVpv(HvNAME(GvSTASH(namesv)),0)); | |
6672 | sv_catpvn(sym, "::", 2); | |
6673 | sv_catpv(sym, d+1); | |
6674 | d = SvPVX(sym); | |
6675 | goto intro_sym; | |
6676 | } | |
6677 | else { | |
6678 | OP *o = newOP(OP_PADSV, 0); | |
6679 | o->op_targ = tmp; | |
6680 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); | |
6681 | } | |
a0d0e21e LW |
6682 | } |
6683 | else { | |
f558d5af JH |
6684 | GV *gv; |
6685 | ++d; | |
6686 | intro_sym: | |
6687 | gv = gv_fetchpv(d, | |
6688 | (PL_in_eval | |
6689 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
6690 | : TRUE), | |
6691 | SVt_PV); | |
3280af22 | 6692 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6693 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6694 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6695 | } |
f5284f61 IZ |
6696 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6697 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6698 | yylval.ival = OP_NULL; |
6699 | } | |
02aa26ce NT |
6700 | |
6701 | /* If it's none of the above, it must be a literal filehandle | |
6702 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6703 | else { |
85e6fe83 | 6704 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6705 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6706 | yylval.ival = OP_NULL; |
6707 | } | |
6708 | } | |
02aa26ce | 6709 | |
79072805 LW |
6710 | return s; |
6711 | } | |
6712 | ||
02aa26ce NT |
6713 | |
6714 | /* scan_str | |
6715 | takes: start position in buffer | |
09bef843 SB |
6716 | keep_quoted preserve \ on the embedded delimiter(s) |
6717 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6718 | returns: position to continue reading from buffer |
6719 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6720 | updates the read buffer. | |
6721 | ||
6722 | This subroutine pulls a string out of the input. It is called for: | |
6723 | q single quotes q(literal text) | |
6724 | ' single quotes 'literal text' | |
6725 | qq double quotes qq(interpolate $here please) | |
6726 | " double quotes "interpolate $here please" | |
6727 | qx backticks qx(/bin/ls -l) | |
6728 | ` backticks `/bin/ls -l` | |
6729 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6730 | m// regexp match m/this/ | |
6731 | s/// regexp substitute s/this/that/ | |
6732 | tr/// string transliterate tr/this/that/ | |
6733 | y/// string transliterate y/this/that/ | |
6734 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6735 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6736 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6737 | ||
6738 | In most of these cases (all but <>, patterns and transliterate) | |
6739 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6740 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6741 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6742 | calls scan_str(). | |
4e553d73 | 6743 | |
02aa26ce NT |
6744 | It skips whitespace before the string starts, and treats the first |
6745 | character as the delimiter. If the delimiter is one of ([{< then | |
6746 | the corresponding "close" character )]}> is used as the closing | |
6747 | delimiter. It allows quoting of delimiters, and if the string has | |
6748 | balanced delimiters ([{<>}]) it allows nesting. | |
6749 | ||
37fd879b HS |
6750 | On success, the SV with the resulting string is put into lex_stuff or, |
6751 | if that is already non-NULL, into lex_repl. The second case occurs only | |
6752 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
6753 | For convenience, the terminating delimiter character is stuffed into | |
6754 | SvIVX of the SV. | |
02aa26ce NT |
6755 | */ |
6756 | ||
76e3520e | 6757 | STATIC char * |
09bef843 | 6758 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6759 | { |
02aa26ce NT |
6760 | SV *sv; /* scalar value: string */ |
6761 | char *tmps; /* temp string, used for delimiter matching */ | |
6762 | register char *s = start; /* current position in the buffer */ | |
6763 | register char term; /* terminating character */ | |
6764 | register char *to; /* current position in the sv's data */ | |
6765 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 6766 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6767 | |
6768 | /* skip space before the delimiter */ | |
fb73857a | 6769 | if (isSPACE(*s)) |
6770 | s = skipspace(s); | |
02aa26ce NT |
6771 | |
6772 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6773 | CLINE; |
02aa26ce NT |
6774 | |
6775 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6776 | term = *s; |
63cd0674 | 6777 | if (!UTF8_IS_INVARIANT((U8)term) && UTF) |
89491803 | 6778 | has_utf8 = TRUE; |
b1c7b182 | 6779 | |
02aa26ce | 6780 | /* mark where we are */ |
57843af0 | 6781 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6782 | PL_multi_open = term; |
02aa26ce NT |
6783 | |
6784 | /* find corresponding closing delimiter */ | |
93a17b20 | 6785 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6786 | term = tmps[5]; |
3280af22 | 6787 | PL_multi_close = term; |
79072805 | 6788 | |
02aa26ce | 6789 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6790 | assuming. 79 is the SV's initial length. What a random number. */ |
6791 | sv = NEWSV(87,79); | |
ed6116ce LW |
6792 | sv_upgrade(sv, SVt_PVIV); |
6793 | SvIVX(sv) = term; | |
a0d0e21e | 6794 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6795 | |
6796 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6797 | if (keep_delims) |
6798 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6799 | s++; |
6800 | for (;;) { | |
02aa26ce | 6801 | /* extend sv if need be */ |
3280af22 | 6802 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6803 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6804 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6805 | |
02aa26ce | 6806 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6807 | if (PL_multi_open == PL_multi_close) { |
6808 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6809 | /* embedded newlines increment the current line number */ |
3280af22 | 6810 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6811 | CopLINE_inc(PL_curcop); |
02aa26ce | 6812 | /* handle quoted delimiters */ |
3280af22 | 6813 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6814 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6815 | s++; |
02aa26ce | 6816 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6817 | else |
6818 | *to++ = *s++; | |
6819 | } | |
02aa26ce NT |
6820 | /* terminate when run out of buffer (the for() condition), or |
6821 | have found the terminator */ | |
93a17b20 LW |
6822 | else if (*s == term) |
6823 | break; | |
63cd0674 | 6824 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 6825 | has_utf8 = TRUE; |
93a17b20 LW |
6826 | *to = *s; |
6827 | } | |
6828 | } | |
02aa26ce NT |
6829 | |
6830 | /* if the terminator isn't the same as the start character (e.g., | |
6831 | matched brackets), we have to allow more in the quoting, and | |
6832 | be prepared for nested brackets. | |
6833 | */ | |
93a17b20 | 6834 | else { |
02aa26ce | 6835 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6836 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6837 | /* embedded newlines increment the line count */ |
3280af22 | 6838 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6839 | CopLINE_inc(PL_curcop); |
02aa26ce | 6840 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6841 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6842 | if (!keep_quoted && |
6843 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6844 | s++; |
6845 | else | |
6846 | *to++ = *s++; | |
6847 | } | |
02aa26ce | 6848 | /* allow nested opens and closes */ |
3280af22 | 6849 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6850 | break; |
3280af22 | 6851 | else if (*s == PL_multi_open) |
93a17b20 | 6852 | brackets++; |
63cd0674 | 6853 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 6854 | has_utf8 = TRUE; |
93a17b20 LW |
6855 | *to = *s; |
6856 | } | |
6857 | } | |
02aa26ce | 6858 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6859 | *to = '\0'; |
463ee0b2 | 6860 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6861 | |
02aa26ce NT |
6862 | /* |
6863 | * this next chunk reads more into the buffer if we're not done yet | |
6864 | */ | |
6865 | ||
b1c7b182 GS |
6866 | if (s < PL_bufend) |
6867 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6868 | |
6a27c188 | 6869 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6870 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6871 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6872 | (to[-2] == '\n' && to[-1] == '\r')) | |
6873 | { | |
f63a84b2 LW |
6874 | to[-2] = '\n'; |
6875 | to--; | |
6876 | SvCUR_set(sv, to - SvPVX(sv)); | |
6877 | } | |
6878 | else if (to[-1] == '\r') | |
6879 | to[-1] = '\n'; | |
6880 | } | |
6881 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6882 | to[-1] = '\n'; | |
6883 | #endif | |
6884 | ||
02aa26ce NT |
6885 | /* if we're out of file, or a read fails, bail and reset the current |
6886 | line marker so we can report where the unterminated string began | |
6887 | */ | |
3280af22 NIS |
6888 | if (!PL_rsfp || |
6889 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6890 | sv_free(sv); |
57843af0 | 6891 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6892 | return Nullch; |
6893 | } | |
02aa26ce | 6894 | /* we read a line, so increment our line counter */ |
57843af0 | 6895 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6896 | |
02aa26ce | 6897 | /* update debugger info */ |
3280af22 | 6898 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6899 | SV *sv = NEWSV(88,0); |
6900 | ||
93a17b20 | 6901 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6902 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6903 | (void)SvIOK_on(sv); |
6904 | SvIVX(sv) = 0; | |
57843af0 | 6905 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6906 | } |
a0ed51b3 | 6907 | |
3280af22 NIS |
6908 | /* having changed the buffer, we must update PL_bufend */ |
6909 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6910 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 6911 | } |
4e553d73 | 6912 | |
02aa26ce NT |
6913 | /* at this point, we have successfully read the delimited string */ |
6914 | ||
09bef843 SB |
6915 | if (keep_delims) |
6916 | sv_catpvn(sv, s, 1); | |
89491803 | 6917 | if (has_utf8) |
b1c7b182 | 6918 | SvUTF8_on(sv); |
57843af0 | 6919 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6920 | s++; |
02aa26ce NT |
6921 | |
6922 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6923 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6924 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6925 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6926 | } |
02aa26ce NT |
6927 | |
6928 | /* decide whether this is the first or second quoted string we've read | |
6929 | for this op | |
6930 | */ | |
4e553d73 | 6931 | |
3280af22 NIS |
6932 | if (PL_lex_stuff) |
6933 | PL_lex_repl = sv; | |
79072805 | 6934 | else |
3280af22 | 6935 | PL_lex_stuff = sv; |
378cc40b LW |
6936 | return s; |
6937 | } | |
6938 | ||
02aa26ce NT |
6939 | /* |
6940 | scan_num | |
6941 | takes: pointer to position in buffer | |
6942 | returns: pointer to new position in buffer | |
6943 | side-effects: builds ops for the constant in yylval.op | |
6944 | ||
6945 | Read a number in any of the formats that Perl accepts: | |
6946 | ||
7fd134d9 JH |
6947 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
6948 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
6949 | 0b[01](_?[01])* |
6950 | 0[0-7](_?[0-7])* | |
6951 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 6952 | |
3280af22 | 6953 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6954 | thing it reads. |
6955 | ||
6956 | If it reads a number without a decimal point or an exponent, it will | |
6957 | try converting the number to an integer and see if it can do so | |
6958 | without loss of precision. | |
6959 | */ | |
4e553d73 | 6960 | |
378cc40b | 6961 | char * |
b73d6f50 | 6962 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 6963 | { |
02aa26ce NT |
6964 | register char *s = start; /* current position in buffer */ |
6965 | register char *d; /* destination in temp buffer */ | |
6966 | register char *e; /* end of temp buffer */ | |
86554af2 | 6967 | NV nv; /* number read, as a double */ |
a7cb1f99 | 6968 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 6969 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6970 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6971 | static char number_too_long[] = "Number too long"; |
378cc40b | 6972 | |
02aa26ce NT |
6973 | /* We use the first character to decide what type of number this is */ |
6974 | ||
378cc40b | 6975 | switch (*s) { |
79072805 | 6976 | default: |
cea2e8a9 | 6977 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 6978 | |
02aa26ce | 6979 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 6980 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6981 | case '0': |
6982 | { | |
02aa26ce NT |
6983 | /* variables: |
6984 | u holds the "number so far" | |
4f19785b WSI |
6985 | shift the power of 2 of the base |
6986 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6987 | overflowed was the number more than we can hold? |
6988 | ||
6989 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6990 | we in octal/hex/binary?" indicator to disallow hex characters |
6991 | when in octal mode. | |
02aa26ce | 6992 | */ |
9e24b6e2 JH |
6993 | NV n = 0.0; |
6994 | UV u = 0; | |
79072805 | 6995 | I32 shift; |
9e24b6e2 JH |
6996 | bool overflowed = FALSE; |
6997 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6998 | static char* bases[5] = { "", "binary", "", "octal", | |
6999 | "hexadecimal" }; | |
7000 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7001 | "Hexadecimal" }; | |
7002 | static char *maxima[5] = { "", | |
7003 | "0b11111111111111111111111111111111", | |
7004 | "", | |
893fe2c2 | 7005 | "037777777777", |
9e24b6e2 JH |
7006 | "0xffffffff" }; |
7007 | char *base, *Base, *max; | |
378cc40b | 7008 | |
02aa26ce | 7009 | /* check for hex */ |
378cc40b LW |
7010 | if (s[1] == 'x') { |
7011 | shift = 4; | |
7012 | s += 2; | |
4f19785b WSI |
7013 | } else if (s[1] == 'b') { |
7014 | shift = 1; | |
7015 | s += 2; | |
378cc40b | 7016 | } |
02aa26ce | 7017 | /* check for a decimal in disguise */ |
b78218b7 | 7018 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7019 | goto decimal; |
02aa26ce | 7020 | /* so it must be octal */ |
928753ea | 7021 | else { |
378cc40b | 7022 | shift = 3; |
928753ea JH |
7023 | s++; |
7024 | } | |
7025 | ||
7026 | if (*s == '_') { | |
7027 | if (ckWARN(WARN_SYNTAX)) | |
7028 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7029 | "Misplaced _ in number"); | |
7030 | lastub = s++; | |
7031 | } | |
9e24b6e2 JH |
7032 | |
7033 | base = bases[shift]; | |
7034 | Base = Bases[shift]; | |
7035 | max = maxima[shift]; | |
02aa26ce | 7036 | |
4f19785b | 7037 | /* read the rest of the number */ |
378cc40b | 7038 | for (;;) { |
9e24b6e2 | 7039 | /* x is used in the overflow test, |
893fe2c2 | 7040 | b is the digit we're adding on. */ |
9e24b6e2 | 7041 | UV x, b; |
55497cff | 7042 | |
378cc40b | 7043 | switch (*s) { |
02aa26ce NT |
7044 | |
7045 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7046 | default: |
7047 | goto out; | |
02aa26ce | 7048 | |
928753ea | 7049 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7050 | case '_': |
928753ea JH |
7051 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
7052 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7053 | "Misplaced _ in number"); | |
7054 | lastub = s++; | |
de3bb511 | 7055 | break; |
02aa26ce NT |
7056 | |
7057 | /* 8 and 9 are not octal */ | |
378cc40b | 7058 | case '8': case '9': |
4f19785b | 7059 | if (shift == 3) |
cea2e8a9 | 7060 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7061 | /* FALL THROUGH */ |
02aa26ce NT |
7062 | |
7063 | /* octal digits */ | |
4f19785b | 7064 | case '2': case '3': case '4': |
378cc40b | 7065 | case '5': case '6': case '7': |
4f19785b | 7066 | if (shift == 1) |
cea2e8a9 | 7067 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7068 | /* FALL THROUGH */ |
7069 | ||
7070 | case '0': case '1': | |
02aa26ce | 7071 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7072 | goto digit; |
02aa26ce NT |
7073 | |
7074 | /* hex digits */ | |
378cc40b LW |
7075 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7076 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7077 | /* make sure they said 0x */ |
378cc40b LW |
7078 | if (shift != 4) |
7079 | goto out; | |
55497cff | 7080 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7081 | |
7082 | /* Prepare to put the digit we have onto the end | |
7083 | of the number so far. We check for overflows. | |
7084 | */ | |
7085 | ||
55497cff | 7086 | digit: |
9e24b6e2 JH |
7087 | if (!overflowed) { |
7088 | x = u << shift; /* make room for the digit */ | |
7089 | ||
7090 | if ((x >> shift) != u | |
7091 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7092 | overflowed = TRUE; |
7093 | n = (NV) u; | |
767a6a26 PM |
7094 | if (ckWARN_d(WARN_OVERFLOW)) |
7095 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
7096 | "Integer overflow in %s number", |
7097 | base); | |
7098 | } else | |
7099 | u = x | b; /* add the digit to the end */ | |
7100 | } | |
7101 | if (overflowed) { | |
7102 | n *= nvshift[shift]; | |
7103 | /* If an NV has not enough bits in its | |
7104 | * mantissa to represent an UV this summing of | |
7105 | * small low-order numbers is a waste of time | |
7106 | * (because the NV cannot preserve the | |
7107 | * low-order bits anyway): we could just | |
7108 | * remember when did we overflow and in the | |
7109 | * end just multiply n by the right | |
7110 | * amount. */ | |
7111 | n += (NV) b; | |
55497cff | 7112 | } |
378cc40b LW |
7113 | break; |
7114 | } | |
7115 | } | |
02aa26ce NT |
7116 | |
7117 | /* if we get here, we had success: make a scalar value from | |
7118 | the number. | |
7119 | */ | |
378cc40b | 7120 | out: |
928753ea JH |
7121 | |
7122 | /* final misplaced underbar check */ | |
7123 | if (s[-1] == '_') { | |
7124 | if (ckWARN(WARN_SYNTAX)) | |
7125 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); | |
7126 | } | |
7127 | ||
79072805 | 7128 | sv = NEWSV(92,0); |
9e24b6e2 | 7129 | if (overflowed) { |
767a6a26 PM |
7130 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
7131 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
7132 | "%s number > %s non-portable", |
7133 | Base, max); | |
7134 | sv_setnv(sv, n); | |
7135 | } | |
7136 | else { | |
15041a67 | 7137 | #if UVSIZE > 4 |
767a6a26 PM |
7138 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
7139 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
7140 | "%s number > %s non-portable", |
7141 | Base, max); | |
2cc4c2dc | 7142 | #endif |
9e24b6e2 JH |
7143 | sv_setuv(sv, u); |
7144 | } | |
2cc4c2dc | 7145 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 7146 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7147 | } |
7148 | break; | |
02aa26ce NT |
7149 | |
7150 | /* | |
7151 | handle decimal numbers. | |
7152 | we're also sent here when we read a 0 as the first digit | |
7153 | */ | |
378cc40b LW |
7154 | case '1': case '2': case '3': case '4': case '5': |
7155 | case '6': case '7': case '8': case '9': case '.': | |
7156 | decimal: | |
3280af22 NIS |
7157 | d = PL_tokenbuf; |
7158 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7159 | floatit = FALSE; |
02aa26ce NT |
7160 | |
7161 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7162 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7163 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7164 | if -w is on |
7165 | */ | |
93a17b20 | 7166 | if (*s == '_') { |
928753ea JH |
7167 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
7168 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7169 | "Misplaced _ in number"); | |
7170 | lastub = s++; | |
93a17b20 | 7171 | } |
fc36a67e | 7172 | else { |
02aa26ce | 7173 | /* check for end of fixed-length buffer */ |
fc36a67e | 7174 | if (d >= e) |
cea2e8a9 | 7175 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7176 | /* if we're ok, copy the character */ |
378cc40b | 7177 | *d++ = *s++; |
fc36a67e | 7178 | } |
378cc40b | 7179 | } |
02aa26ce NT |
7180 | |
7181 | /* final misplaced underbar check */ | |
928753ea | 7182 | if (lastub && s == lastub + 1) { |
d008e5eb | 7183 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 7184 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 7185 | } |
02aa26ce NT |
7186 | |
7187 | /* read a decimal portion if there is one. avoid | |
7188 | 3..5 being interpreted as the number 3. followed | |
7189 | by .5 | |
7190 | */ | |
2f3197b3 | 7191 | if (*s == '.' && s[1] != '.') { |
79072805 | 7192 | floatit = TRUE; |
378cc40b | 7193 | *d++ = *s++; |
02aa26ce | 7194 | |
928753ea JH |
7195 | if (*s == '_') { |
7196 | if (ckWARN(WARN_SYNTAX)) | |
7197 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7198 | "Misplaced _ in number"); | |
7199 | lastub = s; | |
7200 | } | |
7201 | ||
7202 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7203 | */ |
fc36a67e | 7204 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7205 | /* fixed length buffer check */ |
fc36a67e | 7206 | if (d >= e) |
cea2e8a9 | 7207 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7208 | if (*s == '_') { |
7209 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
7210 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7211 | "Misplaced _ in number"); | |
7212 | lastub = s; | |
7213 | } | |
7214 | else | |
fc36a67e | 7215 | *d++ = *s; |
378cc40b | 7216 | } |
928753ea JH |
7217 | /* fractional part ending in underbar? */ |
7218 | if (s[-1] == '_') { | |
7219 | if (ckWARN(WARN_SYNTAX)) | |
7220 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7221 | "Misplaced _ in number"); | |
7222 | } | |
dd629d5b GS |
7223 | if (*s == '.' && isDIGIT(s[1])) { |
7224 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7225 | s = start; |
dd629d5b GS |
7226 | goto vstring; |
7227 | } | |
378cc40b | 7228 | } |
02aa26ce NT |
7229 | |
7230 | /* read exponent part, if present */ | |
7fd134d9 | 7231 | if (*s && strchr("eE",*s) && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7232 | floatit = TRUE; |
7233 | s++; | |
02aa26ce NT |
7234 | |
7235 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7236 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7237 | |
7fd134d9 JH |
7238 | /* stray preinitial _ */ |
7239 | if (*s == '_') { | |
7240 | if (ckWARN(WARN_SYNTAX)) | |
7241 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7242 | "Misplaced _ in number"); | |
7243 | lastub = s++; | |
7244 | } | |
7245 | ||
02aa26ce | 7246 | /* allow positive or negative exponent */ |
378cc40b LW |
7247 | if (*s == '+' || *s == '-') |
7248 | *d++ = *s++; | |
02aa26ce | 7249 | |
7fd134d9 JH |
7250 | /* stray initial _ */ |
7251 | if (*s == '_') { | |
7252 | if (ckWARN(WARN_SYNTAX)) | |
7253 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7254 | "Misplaced _ in number"); | |
7255 | lastub = s++; | |
7256 | } | |
7257 | ||
7fd134d9 JH |
7258 | /* read digits of exponent */ |
7259 | while (isDIGIT(*s) || *s == '_') { | |
7260 | if (isDIGIT(*s)) { | |
7261 | if (d >= e) | |
7262 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7263 | *d++ = *s++; |
7fd134d9 JH |
7264 | } |
7265 | else { | |
7266 | if (ckWARN(WARN_SYNTAX) && | |
7267 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7268 | (!isDIGIT(s[1]) && s[1] != '_'))) |
7fd134d9 JH |
7269 | Perl_warner(aTHX_ WARN_SYNTAX, |
7270 | "Misplaced _ in number"); | |
b3b48e3e | 7271 | lastub = s++; |
7fd134d9 | 7272 | } |
7fd134d9 | 7273 | } |
378cc40b | 7274 | } |
02aa26ce | 7275 | |
02aa26ce NT |
7276 | |
7277 | /* make an sv from the string */ | |
79072805 | 7278 | sv = NEWSV(92,0); |
097ee67d | 7279 | |
0b7fceb9 | 7280 | /* |
58bb9ec3 NC |
7281 | We try to do an integer conversion first if no characters |
7282 | indicating "float" have been found. | |
0b7fceb9 MU |
7283 | */ |
7284 | ||
7285 | if (!floatit) { | |
58bb9ec3 NC |
7286 | UV uv; |
7287 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7288 | ||
7289 | if (flags == IS_NUMBER_IN_UV) { | |
7290 | if (uv <= IV_MAX) | |
86554af2 | 7291 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7292 | else |
c239479b | 7293 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7294 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7295 | if (uv <= (UV) IV_MIN) | |
7296 | sv_setiv(sv, -(IV)uv); | |
7297 | else | |
7298 | floatit = TRUE; | |
7299 | } else | |
7300 | floatit = TRUE; | |
7301 | } | |
0b7fceb9 | 7302 | if (floatit) { |
58bb9ec3 NC |
7303 | /* terminate the string */ |
7304 | *d = '\0'; | |
86554af2 JH |
7305 | nv = Atof(PL_tokenbuf); |
7306 | sv_setnv(sv, nv); | |
7307 | } | |
86554af2 | 7308 | |
b8403495 JH |
7309 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7310 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7311 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7312 | (floatit ? "float" : "integer"), |
7313 | sv, Nullsv, NULL); | |
378cc40b | 7314 | break; |
0b7fceb9 | 7315 | |
e312add1 | 7316 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7317 | case 'v': |
dd629d5b | 7318 | vstring: |
f4758303 JP |
7319 | sv = NEWSV(92,5); /* preallocate storage space */ |
7320 | s = new_vstring(s,sv); | |
a7cb1f99 | 7321 | break; |
79072805 | 7322 | } |
a687059c | 7323 | |
02aa26ce NT |
7324 | /* make the op for the constant and return */ |
7325 | ||
a86a20aa | 7326 | if (sv) |
b73d6f50 | 7327 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7328 | else |
b73d6f50 | 7329 | lvalp->opval = Nullop; |
a687059c | 7330 | |
378cc40b LW |
7331 | return s; |
7332 | } | |
7333 | ||
76e3520e | 7334 | STATIC char * |
cea2e8a9 | 7335 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7336 | { |
79072805 | 7337 | register char *eol; |
378cc40b | 7338 | register char *t; |
79cb57f6 | 7339 | SV *stuff = newSVpvn("",0); |
79072805 | 7340 | bool needargs = FALSE; |
378cc40b | 7341 | |
79072805 | 7342 | while (!needargs) { |
c2e66d9e | 7343 | if (*s == '.' || *s == /*{*/'}') { |
79072805 | 7344 | /*SUPPRESS 530*/ |
51882d45 | 7345 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7346 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7347 | #else |
bf4acbe4 | 7348 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7349 | #endif |
6a65c6a0 | 7350 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7351 | break; |
7352 | } | |
3280af22 | 7353 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7354 | eol = strchr(s,'\n'); |
0f85fab0 | 7355 | if (!eol++) |
3280af22 | 7356 | eol = PL_bufend; |
0f85fab0 LW |
7357 | } |
7358 | else | |
3280af22 | 7359 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7360 | if (*s != '#') { |
a0d0e21e LW |
7361 | for (t = s; t < eol; t++) { |
7362 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7363 | needargs = FALSE; | |
7364 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7365 | } |
a0d0e21e LW |
7366 | if (*t == '@' || *t == '^') |
7367 | needargs = TRUE; | |
378cc40b | 7368 | } |
7121b347 MG |
7369 | if (eol > s) { |
7370 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7371 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7372 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7373 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7374 | end[-2] = '\n'; | |
7375 | end[-1] = '\0'; | |
7376 | SvCUR(stuff)--; | |
7377 | } | |
2dc4c65b | 7378 | #endif |
7121b347 MG |
7379 | } |
7380 | else | |
7381 | break; | |
79072805 LW |
7382 | } |
7383 | s = eol; | |
3280af22 NIS |
7384 | if (PL_rsfp) { |
7385 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7386 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7387 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7388 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7389 | if (!s) { |
3280af22 | 7390 | s = PL_bufptr; |
79072805 | 7391 | yyerror("Format not terminated"); |
378cc40b LW |
7392 | break; |
7393 | } | |
378cc40b | 7394 | } |
463ee0b2 | 7395 | incline(s); |
79072805 | 7396 | } |
a0d0e21e LW |
7397 | enough: |
7398 | if (SvCUR(stuff)) { | |
3280af22 | 7399 | PL_expect = XTERM; |
79072805 | 7400 | if (needargs) { |
3280af22 NIS |
7401 | PL_lex_state = LEX_NORMAL; |
7402 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7403 | force_next(','); |
7404 | } | |
a0d0e21e | 7405 | else |
3280af22 NIS |
7406 | PL_lex_state = LEX_FORMLINE; |
7407 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7408 | force_next(THING); |
3280af22 | 7409 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7410 | force_next(LSTOP); |
378cc40b | 7411 | } |
79072805 | 7412 | else { |
8990e307 | 7413 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7414 | PL_lex_formbrack = 0; |
7415 | PL_bufptr = s; | |
79072805 LW |
7416 | } |
7417 | return s; | |
378cc40b | 7418 | } |
a687059c | 7419 | |
76e3520e | 7420 | STATIC void |
cea2e8a9 | 7421 | S_set_csh(pTHX) |
a687059c | 7422 | { |
ae986130 | 7423 | #ifdef CSH |
3280af22 NIS |
7424 | if (!PL_cshlen) |
7425 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7426 | #endif |
a687059c | 7427 | } |
463ee0b2 | 7428 | |
ba6d6ac9 | 7429 | I32 |
864dbfa3 | 7430 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7431 | { |
3280af22 NIS |
7432 | I32 oldsavestack_ix = PL_savestack_ix; |
7433 | CV* outsidecv = PL_compcv; | |
748a9306 | 7434 | AV* comppadlist; |
8990e307 | 7435 | |
3280af22 NIS |
7436 | if (PL_compcv) { |
7437 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7438 | } |
7766f137 | 7439 | SAVEI32(PL_subline); |
3280af22 NIS |
7440 | save_item(PL_subname); |
7441 | SAVEI32(PL_padix); | |
354992b1 | 7442 | SAVECOMPPAD(); |
3280af22 NIS |
7443 | SAVESPTR(PL_comppad_name); |
7444 | SAVESPTR(PL_compcv); | |
7445 | SAVEI32(PL_comppad_name_fill); | |
7446 | SAVEI32(PL_min_intro_pending); | |
7447 | SAVEI32(PL_max_intro_pending); | |
7448 | SAVEI32(PL_pad_reset_pending); | |
7449 | ||
7450 | PL_compcv = (CV*)NEWSV(1104,0); | |
7451 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7452 | CvFLAGS(PL_compcv) |= flags; | |
7453 | ||
7454 | PL_comppad = newAV(); | |
7455 | av_push(PL_comppad, Nullsv); | |
7456 | PL_curpad = AvARRAY(PL_comppad); | |
7457 | PL_comppad_name = newAV(); | |
7458 | PL_comppad_name_fill = 0; | |
7459 | PL_min_intro_pending = 0; | |
7460 | PL_padix = 0; | |
57843af0 | 7461 | PL_subline = CopLINE(PL_curcop); |
4d1ff10f | 7462 | #ifdef USE_5005THREADS |
79cb57f6 | 7463 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7464 | PL_curpad[0] = (SV*)newAV(); |
7465 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
4d1ff10f | 7466 | #endif /* USE_5005THREADS */ |
748a9306 LW |
7467 | |
7468 | comppadlist = newAV(); | |
7469 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7470 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7471 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7472 | |
3280af22 NIS |
7473 | CvPADLIST(PL_compcv) = comppadlist; |
7474 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
4d1ff10f | 7475 | #ifdef USE_5005THREADS |
533c011a NIS |
7476 | CvOWNER(PL_compcv) = 0; |
7477 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7478 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
4d1ff10f | 7479 | #endif /* USE_5005THREADS */ |
748a9306 | 7480 | |
8990e307 LW |
7481 | return oldsavestack_ix; |
7482 | } | |
7483 | ||
084592ab CN |
7484 | #ifdef __SC__ |
7485 | #pragma segment Perl_yylex | |
7486 | #endif | |
8990e307 | 7487 | int |
864dbfa3 | 7488 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7489 | { |
faef0170 | 7490 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7491 | yyerror(s); |
faef0170 | 7492 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7493 | return 0; |
8990e307 LW |
7494 | } |
7495 | ||
7496 | int | |
864dbfa3 | 7497 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7498 | { |
68dc0745 | 7499 | char *where = NULL; |
7500 | char *context = NULL; | |
7501 | int contlen = -1; | |
46fc3d4c | 7502 | SV *msg; |
463ee0b2 | 7503 | |
3280af22 | 7504 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7505 | where = "at EOF"; |
3280af22 NIS |
7506 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7507 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7508 | while (isSPACE(*PL_oldoldbufptr)) | |
7509 | PL_oldoldbufptr++; | |
7510 | context = PL_oldoldbufptr; | |
7511 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7512 | } |
3280af22 NIS |
7513 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7514 | PL_oldbufptr != PL_bufptr) { | |
7515 | while (isSPACE(*PL_oldbufptr)) | |
7516 | PL_oldbufptr++; | |
7517 | context = PL_oldbufptr; | |
7518 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7519 | } |
7520 | else if (yychar > 255) | |
68dc0745 | 7521 | where = "next token ???"; |
cdfb297e GS |
7522 | #ifdef USE_PURE_BISON |
7523 | /* GNU Bison sets the value -2 */ | |
7524 | else if (yychar == -2) { | |
7525 | #else | |
463ee0b2 | 7526 | else if ((yychar & 127) == 127) { |
cdfb297e | 7527 | #endif |
3280af22 NIS |
7528 | if (PL_lex_state == LEX_NORMAL || |
7529 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7530 | where = "at end of line"; |
3280af22 | 7531 | else if (PL_lex_inpat) |
68dc0745 | 7532 | where = "within pattern"; |
463ee0b2 | 7533 | else |
68dc0745 | 7534 | where = "within string"; |
463ee0b2 | 7535 | } |
46fc3d4c | 7536 | else { |
79cb57f6 | 7537 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7538 | if (yychar < 32) |
cea2e8a9 | 7539 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7540 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7541 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7542 | else |
cea2e8a9 | 7543 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7544 | where = SvPVX(where_sv); |
463ee0b2 | 7545 | } |
46fc3d4c | 7546 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7547 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7548 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7549 | if (context) |
cea2e8a9 | 7550 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7551 | else |
cea2e8a9 | 7552 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7553 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7554 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7555 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7556 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7557 | PL_multi_end = 0; |
a0d0e21e | 7558 | } |
faef0170 | 7559 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7560 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7561 | else |
5a844595 | 7562 | qerror(msg); |
c7d6bfb2 GS |
7563 | if (PL_error_count >= 10) { |
7564 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 7565 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
c7d6bfb2 GS |
7566 | ERRSV, CopFILE(PL_curcop)); |
7567 | else | |
7568 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
7569 | CopFILE(PL_curcop)); | |
7570 | } | |
3280af22 NIS |
7571 | PL_in_my = 0; |
7572 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7573 | return 0; |
7574 | } | |
084592ab CN |
7575 | #ifdef __SC__ |
7576 | #pragma segment Main | |
7577 | #endif | |
4e35701f | 7578 | |
b250498f | 7579 | STATIC char* |
3ae08724 | 7580 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 7581 | { |
b250498f GS |
7582 | STRLEN slen; |
7583 | slen = SvCUR(PL_linestr); | |
7584 | switch (*s) { | |
4e553d73 NIS |
7585 | case 0xFF: |
7586 | if (s[1] == 0xFE) { | |
01ec43d0 | 7587 | /* UTF-16 little-endian */ |
3ae08724 | 7588 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
01ec43d0 GS |
7589 | Perl_croak(aTHX_ "Unsupported script encoding"); |
7590 | #ifndef PERL_NO_UTF16_FILTER | |
dea0fc0b | 7591 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-LE script encoding\n")); |
3ae08724 | 7592 | s += 2; |
dea0fc0b JH |
7593 | if (PL_bufend > (char*)s) { |
7594 | U8 *news; | |
7595 | I32 newlen; | |
7596 | ||
7597 | filter_add(utf16rev_textfilter, NULL); | |
7598 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
f72f5f89 JH |
7599 | PL_bufend = (char*)utf16_to_utf8_reversed(s, news, |
7600 | PL_bufend - (char*)s - 1, | |
dea0fc0b JH |
7601 | &newlen); |
7602 | Copy(news, s, newlen, U8); | |
7603 | SvCUR_set(PL_linestr, newlen); | |
7604 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7605 | news[newlen++] = '\0'; | |
7606 | Safefree(news); | |
7607 | } | |
b250498f | 7608 | #else |
01ec43d0 | 7609 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7610 | #endif |
01ec43d0 GS |
7611 | } |
7612 | break; | |
78ae23f5 | 7613 | case 0xFE: |
3ae08724 | 7614 | if (s[1] == 0xFF) { /* UTF-16 big-endian */ |
01ec43d0 | 7615 | #ifndef PERL_NO_UTF16_FILTER |
dea0fc0b JH |
7616 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding\n")); |
7617 | s += 2; | |
7618 | if (PL_bufend > (char *)s) { | |
7619 | U8 *news; | |
7620 | I32 newlen; | |
7621 | ||
7622 | filter_add(utf16_textfilter, NULL); | |
7623 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
7624 | PL_bufend = (char*)utf16_to_utf8(s, news, | |
7625 | PL_bufend - (char*)s, | |
7626 | &newlen); | |
7627 | Copy(news, s, newlen, U8); | |
7628 | SvCUR_set(PL_linestr, newlen); | |
7629 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7630 | news[newlen++] = '\0'; | |
7631 | Safefree(news); | |
7632 | } | |
b250498f | 7633 | #else |
01ec43d0 | 7634 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7635 | #endif |
01ec43d0 GS |
7636 | } |
7637 | break; | |
3ae08724 GS |
7638 | case 0xEF: |
7639 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
dea0fc0b | 7640 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-8 script encoding\n")); |
01ec43d0 GS |
7641 | s += 3; /* UTF-8 */ |
7642 | } | |
7643 | break; | |
7644 | case 0: | |
7645 | if (slen > 3 && s[1] == 0 && /* UTF-32 big-endian */ | |
3ae08724 | 7646 | s[2] == 0xFE && s[3] == 0xFF) |
01ec43d0 GS |
7647 | { |
7648 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7649 | } | |
7650 | } | |
b8f84bb2 | 7651 | return (char*)s; |
b250498f | 7652 | } |
4755096e | 7653 | |
4755096e GS |
7654 | /* |
7655 | * restore_rsfp | |
7656 | * Restore a source filter. | |
7657 | */ | |
7658 | ||
7659 | static void | |
acfe0abc | 7660 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
7661 | { |
7662 | PerlIO *fp = (PerlIO*)f; | |
7663 | ||
7664 | if (PL_rsfp == PerlIO_stdin()) | |
7665 | PerlIO_clearerr(PL_rsfp); | |
7666 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7667 | PerlIO_close(PL_rsfp); | |
7668 | PL_rsfp = fp; | |
7669 | } | |
6e3aabd6 GS |
7670 | |
7671 | #ifndef PERL_NO_UTF16_FILTER | |
7672 | static I32 | |
acfe0abc | 7673 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7674 | { |
7675 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7676 | if (count) { | |
7677 | U8* tmps; | |
7678 | U8* tend; | |
dea0fc0b | 7679 | I32 newlen; |
6e3aabd6 | 7680 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
f72f5f89 JH |
7681 | if (!*SvPV_nolen(sv)) |
7682 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7683 | return count; | |
4e553d73 | 7684 | |
dea0fc0b | 7685 | tend = utf16_to_utf8((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7686 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7687 | } | |
7688 | return count; | |
7689 | } | |
7690 | ||
7691 | static I32 | |
acfe0abc | 7692 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7693 | { |
7694 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7695 | if (count) { | |
7696 | U8* tmps; | |
7697 | U8* tend; | |
dea0fc0b | 7698 | I32 newlen; |
f72f5f89 JH |
7699 | if (!*SvPV_nolen(sv)) |
7700 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7701 | return count; | |
7702 | ||
6e3aabd6 | 7703 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
dea0fc0b | 7704 | tend = utf16_to_utf8_reversed((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7705 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7706 | } | |
7707 | return count; | |
7708 | } | |
7709 | #endif | |
9f4817db | 7710 |