Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
371fce9b | 4 | * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others |
a687059c | 5 | * |
d48672a2 LW |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 8 | * |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
13 | */ |
14 | ||
9cbb5ea2 GS |
15 | /* |
16 | * This file is the lexer for Perl. It's closely linked to the | |
4e553d73 | 17 | * parser, perly.y. |
ffb4593c NT |
18 | * |
19 | * The main routine is yylex(), which returns the next token. | |
20 | */ | |
21 | ||
378cc40b | 22 | #include "EXTERN.h" |
864dbfa3 | 23 | #define PERL_IN_TOKE_C |
378cc40b | 24 | #include "perl.h" |
378cc40b | 25 | |
12fbd33b DM |
26 | #define yychar (*PL_yycharp) |
27 | #define yylval (*PL_yylvalp) | |
d3b6f988 | 28 | |
fc36a67e | 29 | static char ident_too_long[] = "Identifier too long"; |
4ac733c9 | 30 | static char c_without_g[] = "Use of /c modifier is meaningless without /g"; |
64e578a2 | 31 | static char c_in_subst[] = "Use of /c modifier is meaningless in s///"; |
8903cb82 | 32 | |
acfe0abc | 33 | static void restore_rsfp(pTHX_ void *f); |
6e3aabd6 | 34 | #ifndef PERL_NO_UTF16_FILTER |
acfe0abc GS |
35 | static I32 utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen); |
36 | static I32 utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen); | |
6e3aabd6 | 37 | #endif |
51371543 | 38 | |
9059aa12 LW |
39 | #define XFAKEBRACK 128 |
40 | #define XENUMMASK 127 | |
41 | ||
39e02b42 JH |
42 | #ifdef USE_UTF8_SCRIPTS |
43 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 44 | #else |
746b446a | 45 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8)) |
2b9d42f0 | 46 | #endif |
a0ed51b3 | 47 | |
61f0cdd9 | 48 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
49 | * 1999-02-27 mjd-perl-patch@plover.com */ |
50 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
51 | ||
bf4acbe4 GS |
52 | /* On MacOS, respect nonbreaking spaces */ |
53 | #ifdef MACOS_TRADITIONAL | |
54 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\312'||(c)=='\t') | |
55 | #else | |
56 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') | |
57 | #endif | |
58 | ||
ffb4593c NT |
59 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
60 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
61 | * can get by with a single comparison (if the compiler is smart enough). |
62 | */ | |
63 | ||
fb73857a | 64 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
65 | ||
55497cff | 66 | #define LEX_NORMAL 10 |
67 | #define LEX_INTERPNORMAL 9 | |
68 | #define LEX_INTERPCASEMOD 8 | |
69 | #define LEX_INTERPPUSH 7 | |
70 | #define LEX_INTERPSTART 6 | |
71 | #define LEX_INTERPEND 5 | |
72 | #define LEX_INTERPENDMAYBE 4 | |
73 | #define LEX_INTERPCONCAT 3 | |
74 | #define LEX_INTERPCONST 2 | |
75 | #define LEX_FORMLINE 1 | |
76 | #define LEX_KNOWNEXT 0 | |
79072805 | 77 | |
79072805 LW |
78 | #ifdef ff_next |
79 | #undef ff_next | |
d48672a2 LW |
80 | #endif |
81 | ||
79072805 | 82 | #include "keywords.h" |
fe14fcc3 | 83 | |
ffb4593c NT |
84 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
85 | ||
ae986130 LW |
86 | #ifdef CLINE |
87 | #undef CLINE | |
88 | #endif | |
57843af0 | 89 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 90 | |
ffb4593c NT |
91 | /* |
92 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 93 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
94 | * |
95 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
96 | * OPERATOR : generic operator | |
97 | * AOPERATOR : assignment operator | |
98 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
99 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
100 | * PREREF : *EXPR where EXPR is not a simple identifier | |
101 | * TERM : expression term | |
102 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
103 | * FTST : file test operator | |
104 | * FUN0 : zero-argument function | |
2d2e263d | 105 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
106 | * BOop : bitwise or or xor |
107 | * BAop : bitwise and | |
108 | * SHop : shift operator | |
109 | * PWop : power operator | |
9cbb5ea2 | 110 | * PMop : pattern-matching operator |
ffb4593c NT |
111 | * Aop : addition-level operator |
112 | * Mop : multiplication-level operator | |
113 | * Eop : equality-testing operator | |
e5edeb50 | 114 | * Rop : relational operator <= != gt |
ffb4593c NT |
115 | * |
116 | * Also see LOP and lop() below. | |
117 | */ | |
118 | ||
075953c3 JH |
119 | /* Note that REPORT() and REPORT2() will be expressions that supply |
120 | * their own trailing comma, not suitable for statements as such. */ | |
998054bd | 121 | #ifdef DEBUGGING /* Serve -DT. */ |
075953c3 JH |
122 | # define REPORT(x,retval) tokereport(x,s,(int)retval), |
123 | # define REPORT2(x,retval) tokereport(x,s, yylval.ival), | |
998054bd | 124 | #else |
075953c3 JH |
125 | # define REPORT(x,retval) |
126 | # define REPORT2(x,retval) | |
998054bd SC |
127 | #endif |
128 | ||
075953c3 JH |
129 | #define TOKEN(retval) return (REPORT2("token",retval) PL_bufptr = s,(int)retval) |
130 | #define OPERATOR(retval) return (REPORT2("operator",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval) | |
131 | #define AOPERATOR(retval) return ao((REPORT2("aop",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval)) | |
132 | #define PREBLOCK(retval) return (REPORT2("preblock",retval) PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
133 | #define PRETERMBLOCK(retval) return (REPORT2("pretermblock",retval) PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
134 | #define PREREF(retval) return (REPORT2("preref",retval) PL_expect = XREF,PL_bufptr = s,(int)retval) | |
135 | #define TERM(retval) return (CLINE, REPORT2("term",retval) PL_expect = XOPERATOR, PL_bufptr = s,(int)retval) | |
136 | #define LOOPX(f) return(yylval.ival=f, REPORT("loopx",f) PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
6f33ba73 | 137 | #define FTST(f) return(yylval.ival=f, REPORT("ftst",f) PL_expect = XTERMORDORDOR,PL_bufptr = s,(int)UNIOP) |
075953c3 JH |
138 | #define FUN0(f) return(yylval.ival = f, REPORT("fun0",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) |
139 | #define FUN1(f) return(yylval.ival = f, REPORT("fun1",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
140 | #define BOop(f) return ao((yylval.ival=f, REPORT("bitorop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
141 | #define BAop(f) return ao((yylval.ival=f, REPORT("bitandop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
142 | #define SHop(f) return ao((yylval.ival=f, REPORT("shiftop",f) PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
143 | #define PWop(f) return ao((yylval.ival=f, REPORT("powop",f) PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
144 | #define PMop(f) return(yylval.ival=f, REPORT("matchop",f) PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
145 | #define Aop(f) return ao((yylval.ival=f, REPORT("add",f) PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
146 | #define Mop(f) return ao((yylval.ival=f, REPORT("mul",f) PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
147 | #define Eop(f) return(yylval.ival=f, REPORT("eq",f) PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
148 | #define Rop(f) return(yylval.ival=f, REPORT("rel",f) PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 149 | |
a687059c LW |
150 | /* This bit of chicanery makes a unary function followed by |
151 | * a parenthesis into a function with one argument, highest precedence. | |
6f33ba73 RGS |
152 | * The UNIDOR macro is for unary functions that can be followed by the // |
153 | * operator (such as C<shift // 0>). | |
a687059c | 154 | */ |
6f33ba73 | 155 | #define UNI2(f,x) return(yylval.ival = f, \ |
075953c3 | 156 | REPORT("uni",f) \ |
6f33ba73 | 157 | PL_expect = x, \ |
3280af22 NIS |
158 | PL_bufptr = s, \ |
159 | PL_last_uni = PL_oldbufptr, \ | |
160 | PL_last_lop_op = f, \ | |
a687059c | 161 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
6f33ba73 RGS |
162 | #define UNI(f) UNI2(f,XTERM) |
163 | #define UNIDOR(f) UNI2(f,XTERMORDORDOR) | |
a687059c | 164 | |
79072805 | 165 | #define UNIBRACK(f) return(yylval.ival = f, \ |
075953c3 | 166 | REPORT("uni",f) \ |
3280af22 NIS |
167 | PL_bufptr = s, \ |
168 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
169 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
170 | ||
9f68db38 | 171 | /* grandfather return to old style */ |
3280af22 | 172 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 173 | |
8fa7f367 JH |
174 | #ifdef DEBUGGING |
175 | ||
2d00ba3b | 176 | STATIC void |
61b2116b | 177 | S_tokereport(pTHX_ char *thing, char* s, I32 rv) |
9041c2e3 | 178 | { |
998054bd | 179 | DEBUG_T({ |
9c5ffd7c | 180 | SV* report = newSVpv(thing, 0); |
29b291f7 RB |
181 | Perl_sv_catpvf(aTHX_ report, ":line %d:%"IVdf":", CopLINE(PL_curcop), |
182 | (IV)rv); | |
998054bd SC |
183 | |
184 | if (s - PL_bufptr > 0) | |
185 | sv_catpvn(report, PL_bufptr, s - PL_bufptr); | |
186 | else { | |
187 | if (PL_oldbufptr && *PL_oldbufptr) | |
188 | sv_catpv(report, PL_tokenbuf); | |
189 | } | |
190 | PerlIO_printf(Perl_debug_log, "### %s\n", SvPV_nolen(report)); | |
5f80b19c | 191 | }); |
998054bd SC |
192 | } |
193 | ||
8fa7f367 JH |
194 | #endif |
195 | ||
ffb4593c NT |
196 | /* |
197 | * S_ao | |
198 | * | |
c963b151 BD |
199 | * This subroutine detects &&=, ||=, and //= and turns an ANDAND, OROR or DORDOR |
200 | * into an OP_ANDASSIGN, OP_ORASSIGN, or OP_DORASSIGN | |
ffb4593c NT |
201 | */ |
202 | ||
76e3520e | 203 | STATIC int |
cea2e8a9 | 204 | S_ao(pTHX_ int toketype) |
a0d0e21e | 205 | { |
3280af22 NIS |
206 | if (*PL_bufptr == '=') { |
207 | PL_bufptr++; | |
a0d0e21e LW |
208 | if (toketype == ANDAND) |
209 | yylval.ival = OP_ANDASSIGN; | |
210 | else if (toketype == OROR) | |
211 | yylval.ival = OP_ORASSIGN; | |
c963b151 BD |
212 | else if (toketype == DORDOR) |
213 | yylval.ival = OP_DORASSIGN; | |
a0d0e21e LW |
214 | toketype = ASSIGNOP; |
215 | } | |
216 | return toketype; | |
217 | } | |
218 | ||
ffb4593c NT |
219 | /* |
220 | * S_no_op | |
221 | * When Perl expects an operator and finds something else, no_op | |
222 | * prints the warning. It always prints "<something> found where | |
223 | * operator expected. It prints "Missing semicolon on previous line?" | |
224 | * if the surprise occurs at the start of the line. "do you need to | |
225 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
226 | * where the compiler doesn't know if foo is a method call or a function. | |
227 | * It prints "Missing operator before end of line" if there's nothing | |
228 | * after the missing operator, or "... before <...>" if there is something | |
229 | * after the missing operator. | |
230 | */ | |
231 | ||
76e3520e | 232 | STATIC void |
cea2e8a9 | 233 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 234 | { |
3280af22 NIS |
235 | char *oldbp = PL_bufptr; |
236 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 237 | |
1189a94a GS |
238 | if (!s) |
239 | s = oldbp; | |
07c798fb | 240 | else |
1189a94a | 241 | PL_bufptr = s; |
cea2e8a9 | 242 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
56da5a46 RGS |
243 | if (ckWARN_d(WARN_SYNTAX)) { |
244 | if (is_first) | |
245 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
246 | "\t(Missing semicolon on previous line?)\n"); | |
247 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { | |
248 | char *t; | |
249 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; | |
250 | if (t < PL_bufptr && isSPACE(*t)) | |
251 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
252 | "\t(Do you need to predeclare %.*s?)\n", | |
253 | t - PL_oldoldbufptr, PL_oldoldbufptr); | |
254 | } | |
255 | else { | |
256 | assert(s >= oldbp); | |
257 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
258 | "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
259 | } | |
07c798fb | 260 | } |
3280af22 | 261 | PL_bufptr = oldbp; |
8990e307 LW |
262 | } |
263 | ||
ffb4593c NT |
264 | /* |
265 | * S_missingterm | |
266 | * Complain about missing quote/regexp/heredoc terminator. | |
267 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
268 | * If we're in a delimited string and the delimiter is a control | |
269 | * character, it's reformatted into a two-char sequence like ^C. | |
270 | * This is fatal. | |
271 | */ | |
272 | ||
76e3520e | 273 | STATIC void |
cea2e8a9 | 274 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
275 | { |
276 | char tmpbuf[3]; | |
277 | char q; | |
278 | if (s) { | |
279 | char *nl = strrchr(s,'\n'); | |
d2719217 | 280 | if (nl) |
8990e307 LW |
281 | *nl = '\0'; |
282 | } | |
9d116dd7 JH |
283 | else if ( |
284 | #ifdef EBCDIC | |
285 | iscntrl(PL_multi_close) | |
286 | #else | |
287 | PL_multi_close < 32 || PL_multi_close == 127 | |
288 | #endif | |
289 | ) { | |
8990e307 | 290 | *tmpbuf = '^'; |
3280af22 | 291 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
292 | s = "\\n"; |
293 | tmpbuf[2] = '\0'; | |
294 | s = tmpbuf; | |
295 | } | |
296 | else { | |
eb160463 | 297 | *tmpbuf = (char)PL_multi_close; |
8990e307 LW |
298 | tmpbuf[1] = '\0'; |
299 | s = tmpbuf; | |
300 | } | |
301 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 302 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 303 | } |
79072805 | 304 | |
ffb4593c NT |
305 | /* |
306 | * Perl_deprecate | |
ffb4593c NT |
307 | */ |
308 | ||
79072805 | 309 | void |
864dbfa3 | 310 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 311 | { |
599cee73 | 312 | if (ckWARN(WARN_DEPRECATED)) |
9014280d | 313 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), "Use of %s is deprecated", s); |
a0d0e21e LW |
314 | } |
315 | ||
12bcd1a6 PM |
316 | void |
317 | Perl_deprecate_old(pTHX_ char *s) | |
318 | { | |
319 | /* This function should NOT be called for any new deprecated warnings */ | |
320 | /* Use Perl_deprecate instead */ | |
321 | /* */ | |
322 | /* It is here to maintain backward compatibility with the pre-5.8 */ | |
323 | /* warnings category hierarchy. The "deprecated" category used to */ | |
324 | /* live under the "syntax" category. It is now a top-level category */ | |
325 | /* in its own right. */ | |
326 | ||
327 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) | |
328 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
329 | "Use of %s is deprecated", s); | |
330 | } | |
331 | ||
ffb4593c NT |
332 | /* |
333 | * depcom | |
9cbb5ea2 | 334 | * Deprecate a comma-less variable list. |
ffb4593c NT |
335 | */ |
336 | ||
76e3520e | 337 | STATIC void |
cea2e8a9 | 338 | S_depcom(pTHX) |
a0d0e21e | 339 | { |
12bcd1a6 | 340 | deprecate_old("comma-less variable list"); |
a0d0e21e LW |
341 | } |
342 | ||
ffb4593c | 343 | /* |
9cbb5ea2 GS |
344 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
345 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
346 | */ |
347 | ||
c39cd008 GS |
348 | #ifdef PERL_CR_FILTER |
349 | static void | |
350 | strip_return(SV *sv) | |
351 | { | |
352 | register char *s = SvPVX(sv); | |
353 | register char *e = s + SvCUR(sv); | |
354 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
355 | while (s < e) { | |
356 | if (*s++ == '\r' && *s == '\n') { | |
357 | /* hit a CR-LF, need to copy the rest */ | |
358 | register char *d = s - 1; | |
359 | *d++ = *s++; | |
360 | while (s < e) { | |
361 | if (*s == '\r' && s[1] == '\n') | |
362 | s++; | |
363 | *d++ = *s++; | |
364 | } | |
365 | SvCUR(sv) -= s - d; | |
366 | return; | |
367 | } | |
368 | } | |
369 | } | |
a868473f | 370 | |
76e3520e | 371 | STATIC I32 |
c39cd008 | 372 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 373 | { |
c39cd008 GS |
374 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
375 | if (count > 0 && !maxlen) | |
376 | strip_return(sv); | |
377 | return count; | |
a868473f NIS |
378 | } |
379 | #endif | |
380 | ||
ffb4593c NT |
381 | /* |
382 | * Perl_lex_start | |
9cbb5ea2 GS |
383 | * Initialize variables. Uses the Perl save_stack to save its state (for |
384 | * recursive calls to the parser). | |
ffb4593c NT |
385 | */ |
386 | ||
a0d0e21e | 387 | void |
864dbfa3 | 388 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 389 | { |
8990e307 LW |
390 | char *s; |
391 | STRLEN len; | |
392 | ||
3280af22 NIS |
393 | SAVEI32(PL_lex_dojoin); |
394 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
395 | SAVEI32(PL_lex_casemods); |
396 | SAVEI32(PL_lex_starts); | |
397 | SAVEI32(PL_lex_state); | |
7766f137 | 398 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 399 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
400 | if (PL_lex_state == LEX_KNOWNEXT) { |
401 | I32 toke = PL_nexttoke; | |
402 | while (--toke >= 0) { | |
403 | SAVEI32(PL_nexttype[toke]); | |
404 | SAVEVPTR(PL_nextval[toke]); | |
405 | } | |
406 | SAVEI32(PL_nexttoke); | |
18b09519 | 407 | } |
57843af0 | 408 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
409 | SAVEPPTR(PL_bufptr); |
410 | SAVEPPTR(PL_bufend); | |
411 | SAVEPPTR(PL_oldbufptr); | |
412 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
413 | SAVEPPTR(PL_last_lop); |
414 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
415 | SAVEPPTR(PL_linestart); |
416 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
417 | SAVEGENERICPV(PL_lex_brackstack); |
418 | SAVEGENERICPV(PL_lex_casestack); | |
c76ac1ee | 419 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
420 | SAVESPTR(PL_lex_stuff); |
421 | SAVEI32(PL_lex_defer); | |
09bef843 | 422 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 423 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
424 | SAVEINT(PL_expect); |
425 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
426 | |
427 | PL_lex_state = LEX_NORMAL; | |
428 | PL_lex_defer = 0; | |
429 | PL_expect = XSTATE; | |
430 | PL_lex_brackets = 0; | |
3280af22 NIS |
431 | New(899, PL_lex_brackstack, 120, char); |
432 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
433 | PL_lex_casemods = 0; |
434 | *PL_lex_casestack = '\0'; | |
435 | PL_lex_dojoin = 0; | |
436 | PL_lex_starts = 0; | |
437 | PL_lex_stuff = Nullsv; | |
438 | PL_lex_repl = Nullsv; | |
439 | PL_lex_inpat = 0; | |
76be56bc | 440 | PL_nexttoke = 0; |
3280af22 | 441 | PL_lex_inwhat = 0; |
09bef843 | 442 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
443 | PL_linestr = line; |
444 | if (SvREADONLY(PL_linestr)) | |
445 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
446 | s = SvPV(PL_linestr, len); | |
6f27f9a7 | 447 | if (!len || s[len-1] != ';') { |
3280af22 NIS |
448 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
449 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
450 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 451 | } |
3280af22 NIS |
452 | SvTEMP_off(PL_linestr); |
453 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
454 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 455 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 456 | PL_rsfp = 0; |
79072805 | 457 | } |
a687059c | 458 | |
ffb4593c NT |
459 | /* |
460 | * Perl_lex_end | |
9cbb5ea2 GS |
461 | * Finalizer for lexing operations. Must be called when the parser is |
462 | * done with the lexer. | |
ffb4593c NT |
463 | */ |
464 | ||
463ee0b2 | 465 | void |
864dbfa3 | 466 | Perl_lex_end(pTHX) |
463ee0b2 | 467 | { |
3280af22 | 468 | PL_doextract = FALSE; |
463ee0b2 LW |
469 | } |
470 | ||
ffb4593c NT |
471 | /* |
472 | * S_incline | |
473 | * This subroutine has nothing to do with tilting, whether at windmills | |
474 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 475 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 476 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
477 | * # line 500 "foo.pm" |
478 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
479 | */ |
480 | ||
76e3520e | 481 | STATIC void |
cea2e8a9 | 482 | S_incline(pTHX_ char *s) |
463ee0b2 LW |
483 | { |
484 | char *t; | |
485 | char *n; | |
73659bf1 | 486 | char *e; |
463ee0b2 | 487 | char ch; |
463ee0b2 | 488 | |
57843af0 | 489 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
490 | if (*s++ != '#') |
491 | return; | |
bf4acbe4 | 492 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
493 | if (strnEQ(s, "line", 4)) |
494 | s += 4; | |
495 | else | |
496 | return; | |
084592ab | 497 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 498 | s++; |
4e553d73 | 499 | else |
73659bf1 | 500 | return; |
bf4acbe4 | 501 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
502 | if (!isDIGIT(*s)) |
503 | return; | |
504 | n = s; | |
505 | while (isDIGIT(*s)) | |
506 | s++; | |
bf4acbe4 | 507 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 508 | s++; |
73659bf1 | 509 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 510 | s++; |
73659bf1 GS |
511 | e = t + 1; |
512 | } | |
463ee0b2 | 513 | else { |
463ee0b2 | 514 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 515 | e = t; |
463ee0b2 | 516 | } |
bf4acbe4 | 517 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
518 | e++; |
519 | if (*e != '\n' && *e != '\0') | |
520 | return; /* false alarm */ | |
521 | ||
463ee0b2 LW |
522 | ch = *t; |
523 | *t = '\0'; | |
f4dd75d9 | 524 | if (t - s > 0) { |
05ec9bb3 | 525 | CopFILE_free(PL_curcop); |
57843af0 | 526 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 527 | } |
463ee0b2 | 528 | *t = ch; |
57843af0 | 529 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
530 | } |
531 | ||
ffb4593c NT |
532 | /* |
533 | * S_skipspace | |
534 | * Called to gobble the appropriate amount and type of whitespace. | |
535 | * Skips comments as well. | |
536 | */ | |
537 | ||
76e3520e | 538 | STATIC char * |
cea2e8a9 | 539 | S_skipspace(pTHX_ register char *s) |
a687059c | 540 | { |
3280af22 | 541 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 542 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
543 | s++; |
544 | return s; | |
545 | } | |
546 | for (;;) { | |
fd049845 | 547 | STRLEN prevlen; |
09bef843 | 548 | SSize_t oldprevlen, oldoldprevlen; |
9c5ffd7c | 549 | SSize_t oldloplen = 0, oldunilen = 0; |
60e6418e GS |
550 | while (s < PL_bufend && isSPACE(*s)) { |
551 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
552 | incline(s); | |
553 | } | |
ffb4593c NT |
554 | |
555 | /* comment */ | |
3280af22 NIS |
556 | if (s < PL_bufend && *s == '#') { |
557 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 558 | s++; |
60e6418e | 559 | if (s < PL_bufend) { |
463ee0b2 | 560 | s++; |
60e6418e GS |
561 | if (PL_in_eval && !PL_rsfp) { |
562 | incline(s); | |
563 | continue; | |
564 | } | |
565 | } | |
463ee0b2 | 566 | } |
ffb4593c NT |
567 | |
568 | /* only continue to recharge the buffer if we're at the end | |
569 | * of the buffer, we're not reading from a source filter, and | |
570 | * we're in normal lexing mode | |
571 | */ | |
09bef843 SB |
572 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
573 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 574 | return s; |
ffb4593c NT |
575 | |
576 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
577 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
578 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
579 | { | |
580 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
581 | if (PL_minus_n || PL_minus_p) { |
582 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
583 | ";}continue{print or die qq(-p destination: $!\\n)" : |
584 | ""); | |
3280af22 NIS |
585 | sv_catpv(PL_linestr,";}"); |
586 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
587 | } |
588 | else | |
3280af22 | 589 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
590 | |
591 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
592 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
593 | = SvPVX(PL_linestr); | |
3280af22 | 594 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 595 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
596 | |
597 | /* Close the filehandle. Could be from -P preprocessor, | |
598 | * STDIN, or a regular file. If we were reading code from | |
599 | * STDIN (because the commandline held no -e or filename) | |
600 | * then we don't close it, we reset it so the code can | |
601 | * read from STDIN too. | |
602 | */ | |
603 | ||
3280af22 NIS |
604 | if (PL_preprocess && !PL_in_eval) |
605 | (void)PerlProc_pclose(PL_rsfp); | |
606 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
607 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 608 | else |
3280af22 NIS |
609 | (void)PerlIO_close(PL_rsfp); |
610 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
611 | return s; |
612 | } | |
ffb4593c NT |
613 | |
614 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
615 | /* make corresponding updates to old pointers, for yyerror() */ |
616 | oldprevlen = PL_oldbufptr - PL_bufend; | |
617 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
618 | if (PL_last_uni) | |
619 | oldunilen = PL_last_uni - PL_bufend; | |
620 | if (PL_last_lop) | |
621 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
622 | PL_linestart = PL_bufptr = s + prevlen; |
623 | PL_bufend = s + SvCUR(PL_linestr); | |
624 | s = PL_bufptr; | |
09bef843 SB |
625 | PL_oldbufptr = s + oldprevlen; |
626 | PL_oldoldbufptr = s + oldoldprevlen; | |
627 | if (PL_last_uni) | |
628 | PL_last_uni = s + oldunilen; | |
629 | if (PL_last_lop) | |
630 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 631 | incline(s); |
ffb4593c NT |
632 | |
633 | /* debugger active and we're not compiling the debugger code, | |
634 | * so store the line into the debugger's array of lines | |
635 | */ | |
3280af22 | 636 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
637 | SV *sv = NEWSV(85,0); |
638 | ||
639 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 640 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
641 | (void)SvIOK_on(sv); |
642 | SvIVX(sv) = 0; | |
57843af0 | 643 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 644 | } |
463ee0b2 | 645 | } |
a687059c | 646 | } |
378cc40b | 647 | |
ffb4593c NT |
648 | /* |
649 | * S_check_uni | |
650 | * Check the unary operators to ensure there's no ambiguity in how they're | |
651 | * used. An ambiguous piece of code would be: | |
652 | * rand + 5 | |
653 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
654 | * the +5 is its argument. | |
655 | */ | |
656 | ||
76e3520e | 657 | STATIC void |
cea2e8a9 | 658 | S_check_uni(pTHX) |
ba106d47 | 659 | { |
2f3197b3 | 660 | char *s; |
a0d0e21e | 661 | char *t; |
2f3197b3 | 662 | |
3280af22 | 663 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 664 | return; |
3280af22 NIS |
665 | while (isSPACE(*PL_last_uni)) |
666 | PL_last_uni++; | |
7e2040f0 | 667 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 668 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 669 | return; |
0453d815 | 670 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 671 | char ch = *s; |
0453d815 | 672 | *s = '\0'; |
9014280d | 673 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
2d5ccbba | 674 | "Warning: Use of \"%s\" without parentheses is ambiguous", |
0453d815 PM |
675 | PL_last_uni); |
676 | *s = ch; | |
677 | } | |
2f3197b3 LW |
678 | } |
679 | ||
ffb4593c NT |
680 | /* |
681 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
682 | * with a subroutine, S_lop() for which LOP is just another name. | |
683 | */ | |
684 | ||
a0d0e21e LW |
685 | #define LOP(f,x) return lop(f,x,s) |
686 | ||
ffb4593c NT |
687 | /* |
688 | * S_lop | |
689 | * Build a list operator (or something that might be one). The rules: | |
690 | * - if we have a next token, then it's a list operator [why?] | |
691 | * - if the next thing is an opening paren, then it's a function | |
692 | * - else it's a list operator | |
693 | */ | |
694 | ||
76e3520e | 695 | STATIC I32 |
a0be28da | 696 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 697 | { |
79072805 | 698 | yylval.ival = f; |
35c8bce7 | 699 | CLINE; |
075953c3 | 700 | REPORT("lop", f) |
3280af22 NIS |
701 | PL_expect = x; |
702 | PL_bufptr = s; | |
703 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 704 | PL_last_lop_op = (OPCODE)f; |
3280af22 | 705 | if (PL_nexttoke) |
a0d0e21e | 706 | return LSTOP; |
79072805 LW |
707 | if (*s == '(') |
708 | return FUNC; | |
709 | s = skipspace(s); | |
710 | if (*s == '(') | |
711 | return FUNC; | |
712 | else | |
713 | return LSTOP; | |
714 | } | |
715 | ||
ffb4593c NT |
716 | /* |
717 | * S_force_next | |
9cbb5ea2 | 718 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 719 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
720 | * to know what token to return the next time the lexer is called. Caller |
721 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
722 | * handles the token correctly. | |
ffb4593c NT |
723 | */ |
724 | ||
4e553d73 | 725 | STATIC void |
cea2e8a9 | 726 | S_force_next(pTHX_ I32 type) |
79072805 | 727 | { |
3280af22 NIS |
728 | PL_nexttype[PL_nexttoke] = type; |
729 | PL_nexttoke++; | |
730 | if (PL_lex_state != LEX_KNOWNEXT) { | |
731 | PL_lex_defer = PL_lex_state; | |
732 | PL_lex_expect = PL_expect; | |
733 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
734 | } |
735 | } | |
736 | ||
ffb4593c NT |
737 | /* |
738 | * S_force_word | |
739 | * When the lexer knows the next thing is a word (for instance, it has | |
740 | * just seen -> and it knows that the next char is a word char, then | |
741 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
742 | * | |
743 | * Arguments: | |
b1b65b59 | 744 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
745 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
746 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
747 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
748 | * int allow_pack : if true, : characters will also be allowed (require, | |
749 | * use, etc. do this) | |
9cbb5ea2 | 750 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
751 | */ |
752 | ||
76e3520e | 753 | STATIC char * |
cea2e8a9 | 754 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 755 | { |
463ee0b2 LW |
756 | register char *s; |
757 | STRLEN len; | |
4e553d73 | 758 | |
463ee0b2 LW |
759 | start = skipspace(start); |
760 | s = start; | |
7e2040f0 | 761 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 762 | (allow_pack && *s == ':') || |
15f0808c | 763 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 764 | { |
3280af22 NIS |
765 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
766 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
767 | return start; |
768 | if (token == METHOD) { | |
769 | s = skipspace(s); | |
770 | if (*s == '(') | |
3280af22 | 771 | PL_expect = XTERM; |
463ee0b2 | 772 | else { |
3280af22 | 773 | PL_expect = XOPERATOR; |
463ee0b2 | 774 | } |
79072805 | 775 | } |
3280af22 NIS |
776 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
777 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
5464dbd2 RGS |
778 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
779 | SvUTF8_on(((SVOP*)PL_nextval[PL_nexttoke].opval)->op_sv); | |
79072805 LW |
780 | force_next(token); |
781 | } | |
782 | return s; | |
783 | } | |
784 | ||
ffb4593c NT |
785 | /* |
786 | * S_force_ident | |
9cbb5ea2 | 787 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
788 | * text only contains the "foo" portion. The first argument is a pointer |
789 | * to the "foo", and the second argument is the type symbol to prefix. | |
790 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 791 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
792 | */ |
793 | ||
76e3520e | 794 | STATIC void |
cea2e8a9 | 795 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
796 | { |
797 | if (s && *s) { | |
11343788 | 798 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 799 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 800 | force_next(WORD); |
748a9306 | 801 | if (kind) { |
11343788 | 802 | o->op_private = OPpCONST_ENTERED; |
55497cff | 803 | /* XXX see note in pp_entereval() for why we forgo typo |
804 | warnings if the symbol must be introduced in an eval. | |
805 | GSAR 96-10-12 */ | |
3280af22 | 806 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
807 | kind == '$' ? SVt_PV : |
808 | kind == '@' ? SVt_PVAV : | |
809 | kind == '%' ? SVt_PVHV : | |
810 | SVt_PVGV | |
811 | ); | |
748a9306 | 812 | } |
79072805 LW |
813 | } |
814 | } | |
815 | ||
1571675a GS |
816 | NV |
817 | Perl_str_to_version(pTHX_ SV *sv) | |
818 | { | |
819 | NV retval = 0.0; | |
820 | NV nshift = 1.0; | |
821 | STRLEN len; | |
822 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 823 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
824 | char *end = start + len; |
825 | while (start < end) { | |
ba210ebe | 826 | STRLEN skip; |
1571675a GS |
827 | UV n; |
828 | if (utf) | |
9041c2e3 | 829 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
830 | else { |
831 | n = *(U8*)start; | |
832 | skip = 1; | |
833 | } | |
834 | retval += ((NV)n)/nshift; | |
835 | start += skip; | |
836 | nshift *= 1000; | |
837 | } | |
838 | return retval; | |
839 | } | |
840 | ||
4e553d73 | 841 | /* |
ffb4593c NT |
842 | * S_force_version |
843 | * Forces the next token to be a version number. | |
e759cc13 RGS |
844 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
845 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
846 | * must use an alternative parsing method). | |
ffb4593c NT |
847 | */ |
848 | ||
76e3520e | 849 | STATIC char * |
e759cc13 | 850 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 851 | { |
852 | OP *version = Nullop; | |
44dcb63b | 853 | char *d; |
89bfa8cd | 854 | |
855 | s = skipspace(s); | |
856 | ||
44dcb63b | 857 | d = s; |
dd629d5b | 858 | if (*d == 'v') |
44dcb63b | 859 | d++; |
44dcb63b | 860 | if (isDIGIT(*d)) { |
e759cc13 RGS |
861 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
862 | d++; | |
9f3d182e | 863 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 864 | SV *ver; |
b73d6f50 | 865 | s = scan_num(s, &yylval); |
89bfa8cd | 866 | version = yylval.opval; |
dd629d5b GS |
867 | ver = cSVOPx(version)->op_sv; |
868 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 869 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
870 | SvNVX(ver) = str_to_version(ver); |
871 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 872 | } |
89bfa8cd | 873 | } |
e759cc13 RGS |
874 | else if (guessing) |
875 | return s; | |
89bfa8cd | 876 | } |
877 | ||
878 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 879 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 880 | force_next(WORD); |
89bfa8cd | 881 | |
e759cc13 | 882 | return s; |
89bfa8cd | 883 | } |
884 | ||
ffb4593c NT |
885 | /* |
886 | * S_tokeq | |
887 | * Tokenize a quoted string passed in as an SV. It finds the next | |
888 | * chunk, up to end of string or a backslash. It may make a new | |
889 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
890 | * turns \\ into \. | |
891 | */ | |
892 | ||
76e3520e | 893 | STATIC SV * |
cea2e8a9 | 894 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
895 | { |
896 | register char *s; | |
897 | register char *send; | |
898 | register char *d; | |
b3ac6de7 IZ |
899 | STRLEN len = 0; |
900 | SV *pv = sv; | |
79072805 LW |
901 | |
902 | if (!SvLEN(sv)) | |
b3ac6de7 | 903 | goto finish; |
79072805 | 904 | |
a0d0e21e | 905 | s = SvPV_force(sv, len); |
21a311ee | 906 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 907 | goto finish; |
463ee0b2 | 908 | send = s + len; |
79072805 LW |
909 | while (s < send && *s != '\\') |
910 | s++; | |
911 | if (s == send) | |
b3ac6de7 | 912 | goto finish; |
79072805 | 913 | d = s; |
be4731d2 | 914 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 915 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
916 | if (SvUTF8(sv)) |
917 | SvUTF8_on(pv); | |
918 | } | |
79072805 LW |
919 | while (s < send) { |
920 | if (*s == '\\') { | |
a0d0e21e | 921 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
922 | s++; /* all that, just for this */ |
923 | } | |
924 | *d++ = *s++; | |
925 | } | |
926 | *d = '\0'; | |
463ee0b2 | 927 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 928 | finish: |
3280af22 | 929 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 930 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
931 | return sv; |
932 | } | |
933 | ||
ffb4593c NT |
934 | /* |
935 | * Now come three functions related to double-quote context, | |
936 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
937 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
938 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
939 | * to handle functions and concatenation. | |
940 | * They assume that whoever calls them will be setting up a fake | |
941 | * join call, because each subthing puts a ',' after it. This lets | |
942 | * "lower \luPpEr" | |
943 | * become | |
944 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
945 | * | |
946 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
947 | * arguments and join's arguments are created or not). | |
948 | */ | |
949 | ||
950 | /* | |
951 | * S_sublex_start | |
952 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
953 | * | |
954 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
955 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
956 | * | |
957 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
958 | * | |
959 | * Everything else becomes a FUNC. | |
960 | * | |
961 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
962 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
963 | * call to S_sublex_push(). | |
964 | */ | |
965 | ||
76e3520e | 966 | STATIC I32 |
cea2e8a9 | 967 | S_sublex_start(pTHX) |
79072805 LW |
968 | { |
969 | register I32 op_type = yylval.ival; | |
79072805 LW |
970 | |
971 | if (op_type == OP_NULL) { | |
3280af22 NIS |
972 | yylval.opval = PL_lex_op; |
973 | PL_lex_op = Nullop; | |
79072805 LW |
974 | return THING; |
975 | } | |
976 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 977 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
978 | |
979 | if (SvTYPE(sv) == SVt_PVIV) { | |
980 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
981 | STRLEN len; | |
982 | char *p; | |
983 | SV *nsv; | |
984 | ||
985 | p = SvPV(sv, len); | |
79cb57f6 | 986 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
987 | if (SvUTF8(sv)) |
988 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
989 | SvREFCNT_dec(sv); |
990 | sv = nsv; | |
4e553d73 | 991 | } |
b3ac6de7 | 992 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 993 | PL_lex_stuff = Nullsv; |
6f33ba73 RGS |
994 | /* Allow <FH> // "foo" */ |
995 | if (op_type == OP_READLINE) | |
996 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
997 | return THING; |
998 | } | |
999 | ||
3280af22 NIS |
1000 | PL_sublex_info.super_state = PL_lex_state; |
1001 | PL_sublex_info.sub_inwhat = op_type; | |
1002 | PL_sublex_info.sub_op = PL_lex_op; | |
1003 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1004 | |
3280af22 NIS |
1005 | PL_expect = XTERM; |
1006 | if (PL_lex_op) { | |
1007 | yylval.opval = PL_lex_op; | |
1008 | PL_lex_op = Nullop; | |
55497cff | 1009 | return PMFUNC; |
1010 | } | |
1011 | else | |
1012 | return FUNC; | |
1013 | } | |
1014 | ||
ffb4593c NT |
1015 | /* |
1016 | * S_sublex_push | |
1017 | * Create a new scope to save the lexing state. The scope will be | |
1018 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1019 | * to the uc, lc, etc. found before. | |
1020 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1021 | */ | |
1022 | ||
76e3520e | 1023 | STATIC I32 |
cea2e8a9 | 1024 | S_sublex_push(pTHX) |
55497cff | 1025 | { |
f46d017c | 1026 | ENTER; |
55497cff | 1027 | |
3280af22 NIS |
1028 | PL_lex_state = PL_sublex_info.super_state; |
1029 | SAVEI32(PL_lex_dojoin); | |
1030 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1031 | SAVEI32(PL_lex_casemods); |
1032 | SAVEI32(PL_lex_starts); | |
1033 | SAVEI32(PL_lex_state); | |
7766f137 | 1034 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1035 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1036 | SAVECOPLINE(PL_curcop); |
3280af22 | 1037 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1038 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1039 | SAVEPPTR(PL_oldbufptr); |
1040 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1041 | SAVEPPTR(PL_last_lop); |
1042 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1043 | SAVEPPTR(PL_linestart); |
1044 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
1045 | SAVEGENERICPV(PL_lex_brackstack); |
1046 | SAVEGENERICPV(PL_lex_casestack); | |
3280af22 NIS |
1047 | |
1048 | PL_linestr = PL_lex_stuff; | |
1049 | PL_lex_stuff = Nullsv; | |
1050 | ||
9cbb5ea2 GS |
1051 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1052 | = SvPVX(PL_linestr); | |
3280af22 | 1053 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1054 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1055 | SAVEFREESV(PL_linestr); |
1056 | ||
1057 | PL_lex_dojoin = FALSE; | |
1058 | PL_lex_brackets = 0; | |
3280af22 NIS |
1059 | New(899, PL_lex_brackstack, 120, char); |
1060 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
1061 | PL_lex_casemods = 0; |
1062 | *PL_lex_casestack = '\0'; | |
1063 | PL_lex_starts = 0; | |
1064 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 1065 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 NIS |
1066 | |
1067 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1068 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1069 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1070 | else |
3280af22 | 1071 | PL_lex_inpat = Nullop; |
79072805 | 1072 | |
55497cff | 1073 | return '('; |
79072805 LW |
1074 | } |
1075 | ||
ffb4593c NT |
1076 | /* |
1077 | * S_sublex_done | |
1078 | * Restores lexer state after a S_sublex_push. | |
1079 | */ | |
1080 | ||
76e3520e | 1081 | STATIC I32 |
cea2e8a9 | 1082 | S_sublex_done(pTHX) |
79072805 | 1083 | { |
3280af22 | 1084 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1085 | SV *sv = newSVpvn("",0); |
1086 | if (SvUTF8(PL_linestr)) | |
1087 | SvUTF8_on(sv); | |
3280af22 | 1088 | PL_expect = XOPERATOR; |
9aa983d2 | 1089 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1090 | return THING; |
1091 | } | |
1092 | ||
3280af22 NIS |
1093 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1094 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1095 | return yylex(); |
79072805 LW |
1096 | } |
1097 | ||
ffb4593c | 1098 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1099 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1100 | PL_linestr = PL_lex_repl; | |
1101 | PL_lex_inpat = 0; | |
1102 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1103 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1104 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1105 | SAVEFREESV(PL_linestr); |
1106 | PL_lex_dojoin = FALSE; | |
1107 | PL_lex_brackets = 0; | |
3280af22 NIS |
1108 | PL_lex_casemods = 0; |
1109 | *PL_lex_casestack = '\0'; | |
1110 | PL_lex_starts = 0; | |
25da4f38 | 1111 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1112 | PL_lex_state = LEX_INTERPNORMAL; |
1113 | PL_lex_starts++; | |
e9fa98b2 HS |
1114 | /* we don't clear PL_lex_repl here, so that we can check later |
1115 | whether this is an evalled subst; that means we rely on the | |
1116 | logic to ensure sublex_done() is called again only via the | |
1117 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1118 | } |
e9fa98b2 | 1119 | else { |
3280af22 | 1120 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1121 | PL_lex_repl = Nullsv; |
1122 | } | |
79072805 | 1123 | return ','; |
ffed7fef LW |
1124 | } |
1125 | else { | |
f46d017c | 1126 | LEAVE; |
3280af22 NIS |
1127 | PL_bufend = SvPVX(PL_linestr); |
1128 | PL_bufend += SvCUR(PL_linestr); | |
1129 | PL_expect = XOPERATOR; | |
09bef843 | 1130 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1131 | return ')'; |
ffed7fef LW |
1132 | } |
1133 | } | |
1134 | ||
02aa26ce NT |
1135 | /* |
1136 | scan_const | |
1137 | ||
1138 | Extracts a pattern, double-quoted string, or transliteration. This | |
1139 | is terrifying code. | |
1140 | ||
3280af22 NIS |
1141 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1142 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1143 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1144 | ||
9b599b2a GS |
1145 | Returns a pointer to the character scanned up to. Iff this is |
1146 | advanced from the start pointer supplied (ie if anything was | |
1147 | successfully parsed), will leave an OP for the substring scanned | |
1148 | in yylval. Caller must intuit reason for not parsing further | |
1149 | by looking at the next characters herself. | |
1150 | ||
02aa26ce NT |
1151 | In patterns: |
1152 | backslashes: | |
1153 | double-quoted style: \r and \n | |
1154 | regexp special ones: \D \s | |
1155 | constants: \x3 | |
1156 | backrefs: \1 (deprecated in substitution replacements) | |
1157 | case and quoting: \U \Q \E | |
1158 | stops on @ and $, but not for $ as tail anchor | |
1159 | ||
1160 | In transliterations: | |
1161 | characters are VERY literal, except for - not at the start or end | |
1162 | of the string, which indicates a range. scan_const expands the | |
1163 | range to the full set of intermediate characters. | |
1164 | ||
1165 | In double-quoted strings: | |
1166 | backslashes: | |
1167 | double-quoted style: \r and \n | |
1168 | constants: \x3 | |
1169 | backrefs: \1 (deprecated) | |
1170 | case and quoting: \U \Q \E | |
1171 | stops on @ and $ | |
1172 | ||
1173 | scan_const does *not* construct ops to handle interpolated strings. | |
1174 | It stops processing as soon as it finds an embedded $ or @ variable | |
1175 | and leaves it to the caller to work out what's going on. | |
1176 | ||
da6eedaa | 1177 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @::foo. |
02aa26ce NT |
1178 | |
1179 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1180 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1181 | followed by one of ")| \n\t" | |
1182 | ||
1183 | \1 (backreferences) are turned into $1 | |
1184 | ||
1185 | The structure of the code is | |
1186 | while (there's a character to process) { | |
1187 | handle transliteration ranges | |
1188 | skip regexp comments | |
1189 | skip # initiated comments in //x patterns | |
1190 | check for embedded @foo | |
1191 | check for embedded scalars | |
1192 | if (backslash) { | |
1193 | leave intact backslashes from leave (below) | |
1194 | deprecate \1 in strings and sub replacements | |
1195 | handle string-changing backslashes \l \U \Q \E, etc. | |
1196 | switch (what was escaped) { | |
1197 | handle - in a transliteration (becomes a literal -) | |
1198 | handle \132 octal characters | |
1199 | handle 0x15 hex characters | |
1200 | handle \cV (control V) | |
1201 | handle printf backslashes (\f, \r, \n, etc) | |
1202 | } (end switch) | |
1203 | } (end if backslash) | |
1204 | } (end while character to read) | |
4e553d73 | 1205 | |
02aa26ce NT |
1206 | */ |
1207 | ||
76e3520e | 1208 | STATIC char * |
cea2e8a9 | 1209 | S_scan_const(pTHX_ char *start) |
79072805 | 1210 | { |
3280af22 | 1211 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1212 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1213 | register char *s = start; /* start of the constant */ | |
1214 | register char *d = SvPVX(sv); /* destination for copies */ | |
1215 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1216 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1217 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1218 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1219 | UV uv; |
1220 | ||
dff6d3cd | 1221 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1222 | PL_lex_inpat |
b6d5fef8 | 1223 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1224 | : ""; |
79072805 | 1225 | |
2b9d42f0 NIS |
1226 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1227 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1228 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1229 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1230 | } | |
1231 | ||
1232 | ||
79072805 | 1233 | while (s < send || dorange) { |
02aa26ce | 1234 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1235 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1236 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1237 | if (dorange) { |
1ba5c669 JH |
1238 | I32 i; /* current expanded character */ |
1239 | I32 min; /* first character in range */ | |
1240 | I32 max; /* last character in range */ | |
02aa26ce | 1241 | |
2b9d42f0 | 1242 | if (has_utf8) { |
8973db79 JH |
1243 | char *c = (char*)utf8_hop((U8*)d, -1); |
1244 | char *e = d++; | |
1245 | while (e-- > c) | |
1246 | *(e + 1) = *e; | |
25716404 | 1247 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1248 | /* mark the range as done, and continue */ |
1249 | dorange = FALSE; | |
1250 | didrange = TRUE; | |
1251 | continue; | |
1252 | } | |
2b9d42f0 | 1253 | |
02aa26ce | 1254 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1255 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1256 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1257 | d -= 2; /* eat the first char and the - */ |
1258 | ||
8ada0baa JH |
1259 | min = (U8)*d; /* first char in range */ |
1260 | max = (U8)d[1]; /* last char in range */ | |
1261 | ||
c2e66d9e | 1262 | if (min > max) { |
01ec43d0 | 1263 | Perl_croak(aTHX_ |
d1573ac7 | 1264 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 1265 | (char)min, (char)max); |
c2e66d9e GS |
1266 | } |
1267 | ||
c7f1f016 | 1268 | #ifdef EBCDIC |
8ada0baa JH |
1269 | if ((isLOWER(min) && isLOWER(max)) || |
1270 | (isUPPER(min) && isUPPER(max))) { | |
1271 | if (isLOWER(min)) { | |
1272 | for (i = min; i <= max; i++) | |
1273 | if (isLOWER(i)) | |
db42d148 | 1274 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1275 | } else { |
1276 | for (i = min; i <= max; i++) | |
1277 | if (isUPPER(i)) | |
db42d148 | 1278 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1279 | } |
1280 | } | |
1281 | else | |
1282 | #endif | |
1283 | for (i = min; i <= max; i++) | |
eb160463 | 1284 | *d++ = (char)i; |
02aa26ce NT |
1285 | |
1286 | /* mark the range as done, and continue */ | |
79072805 | 1287 | dorange = FALSE; |
01ec43d0 | 1288 | didrange = TRUE; |
79072805 | 1289 | continue; |
4e553d73 | 1290 | } |
02aa26ce NT |
1291 | |
1292 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1293 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1294 | if (didrange) { |
1fafa243 | 1295 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1296 | } |
2b9d42f0 | 1297 | if (has_utf8) { |
25716404 | 1298 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1299 | s++; |
1300 | continue; | |
1301 | } | |
79072805 LW |
1302 | dorange = TRUE; |
1303 | s++; | |
01ec43d0 GS |
1304 | } |
1305 | else { | |
1306 | didrange = FALSE; | |
1307 | } | |
79072805 | 1308 | } |
02aa26ce NT |
1309 | |
1310 | /* if we get here, we're not doing a transliteration */ | |
1311 | ||
0f5d15d6 IZ |
1312 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1313 | except for the last char, which will be done separately. */ | |
3280af22 | 1314 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 | 1315 | if (s[2] == '#') { |
e994fd66 | 1316 | while (s+1 < send && *s != ')') |
db42d148 | 1317 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1318 | } |
1319 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1320 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1321 | { | |
cc6b7395 | 1322 | I32 count = 1; |
0f5d15d6 | 1323 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1324 | char c; |
1325 | ||
d9f97599 GS |
1326 | while (count && (c = *regparse)) { |
1327 | if (c == '\\' && regparse[1]) | |
1328 | regparse++; | |
4e553d73 | 1329 | else if (c == '{') |
cc6b7395 | 1330 | count++; |
4e553d73 | 1331 | else if (c == '}') |
cc6b7395 | 1332 | count--; |
d9f97599 | 1333 | regparse++; |
cc6b7395 | 1334 | } |
e994fd66 | 1335 | if (*regparse != ')') |
5bdf89e7 | 1336 | regparse--; /* Leave one char for continuation. */ |
0f5d15d6 | 1337 | while (s < regparse) |
db42d148 | 1338 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1339 | } |
748a9306 | 1340 | } |
02aa26ce NT |
1341 | |
1342 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1343 | else if (*s == '#' && PL_lex_inpat && |
1344 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1345 | while (s+1 < send && *s != '\n') |
db42d148 | 1346 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1347 | } |
02aa26ce | 1348 | |
5d1d4326 | 1349 | /* check for embedded arrays |
da6eedaa | 1350 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 1351 | */ |
7e2040f0 | 1352 | else if (*s == '@' && s[1] |
5d1d4326 | 1353 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1354 | break; |
02aa26ce NT |
1355 | |
1356 | /* check for embedded scalars. only stop if we're sure it's a | |
1357 | variable. | |
1358 | */ | |
79072805 | 1359 | else if (*s == '$') { |
3280af22 | 1360 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1361 | break; |
6002328a | 1362 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1363 | break; /* in regexp, $ might be tail anchor */ |
1364 | } | |
02aa26ce | 1365 | |
2b9d42f0 NIS |
1366 | /* End of else if chain - OP_TRANS rejoin rest */ |
1367 | ||
02aa26ce | 1368 | /* backslashes */ |
79072805 LW |
1369 | if (*s == '\\' && s+1 < send) { |
1370 | s++; | |
02aa26ce NT |
1371 | |
1372 | /* some backslashes we leave behind */ | |
c9f97d15 | 1373 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1374 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1375 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1376 | continue; |
1377 | } | |
02aa26ce NT |
1378 | |
1379 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1380 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1381 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1382 | { |
599cee73 | 1383 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 1384 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
1385 | *--s = '$'; |
1386 | break; | |
1387 | } | |
02aa26ce NT |
1388 | |
1389 | /* string-change backslash escapes */ | |
3280af22 | 1390 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1391 | --s; |
1392 | break; | |
1393 | } | |
02aa26ce NT |
1394 | |
1395 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1396 | switch (*s) { |
02aa26ce NT |
1397 | |
1398 | /* quoted - in transliterations */ | |
79072805 | 1399 | case '-': |
3280af22 | 1400 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1401 | *d++ = *s++; |
1402 | continue; | |
1403 | } | |
1404 | /* FALL THROUGH */ | |
1405 | default: | |
11b8faa4 | 1406 | { |
707afd92 MS |
1407 | if (ckWARN(WARN_MISC) && |
1408 | isALNUM(*s) && | |
1409 | *s != '_') | |
9014280d | 1410 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
11b8faa4 JH |
1411 | "Unrecognized escape \\%c passed through", |
1412 | *s); | |
1413 | /* default action is to copy the quoted character */ | |
f9a63242 | 1414 | goto default_action; |
11b8faa4 | 1415 | } |
02aa26ce NT |
1416 | |
1417 | /* \132 indicates an octal constant */ | |
79072805 LW |
1418 | case '0': case '1': case '2': case '3': |
1419 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1420 | { |
53305cf1 NC |
1421 | I32 flags = 0; |
1422 | STRLEN len = 3; | |
1423 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1424 | s += len; |
1425 | } | |
012bcf8d | 1426 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1427 | |
1428 | /* \x24 indicates a hex constant */ | |
79072805 | 1429 | case 'x': |
a0ed51b3 LW |
1430 | ++s; |
1431 | if (*s == '{') { | |
1432 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1433 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1434 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1435 | STRLEN len; |
355860ce | 1436 | |
53305cf1 | 1437 | ++s; |
adaeee49 | 1438 | if (!e) { |
a0ed51b3 | 1439 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1440 | continue; |
ba210ebe | 1441 | } |
53305cf1 NC |
1442 | len = e - s; |
1443 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1444 | s = e + 1; |
a0ed51b3 LW |
1445 | } |
1446 | else { | |
ba210ebe | 1447 | { |
53305cf1 | 1448 | STRLEN len = 2; |
a4c04bdc | 1449 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1450 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1451 | s += len; |
1452 | } | |
012bcf8d GS |
1453 | } |
1454 | ||
1455 | NUM_ESCAPE_INSERT: | |
1456 | /* Insert oct or hex escaped character. | |
301d3d20 | 1457 | * There will always enough room in sv since such |
db42d148 | 1458 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1459 | * they can end up as. */ |
ba7cea30 | 1460 | |
c7f1f016 NIS |
1461 | /* We need to map to chars to ASCII before doing the tests |
1462 | to cover EBCDIC | |
1463 | */ | |
c4d5f83a | 1464 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1465 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1466 | /* Might need to recode whatever we have |
1467 | * accumulated so far if it contains any | |
1468 | * hibit chars. | |
1469 | * | |
1470 | * (Can't we keep track of that and avoid | |
1471 | * this rescan? --jhi) | |
012bcf8d | 1472 | */ |
c7f1f016 | 1473 | int hicount = 0; |
63cd0674 NIS |
1474 | U8 *c; |
1475 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1476 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1477 | hicount++; |
db42d148 | 1478 | } |
012bcf8d | 1479 | } |
63cd0674 | 1480 | if (hicount) { |
db42d148 NIS |
1481 | STRLEN offset = d - SvPVX(sv); |
1482 | U8 *src, *dst; | |
1483 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1484 | src = (U8 *)d - 1; | |
1485 | dst = src+hicount; | |
1486 | d += hicount; | |
1487 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1488 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1489 | U8 ch = NATIVE_TO_ASCII(*src); |
eb160463 GS |
1490 | *dst-- = (U8)UTF8_EIGHT_BIT_LO(ch); |
1491 | *dst-- = (U8)UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1492 | } |
1493 | else { | |
63cd0674 | 1494 | *dst-- = *src; |
012bcf8d | 1495 | } |
c7f1f016 | 1496 | src--; |
012bcf8d GS |
1497 | } |
1498 | } | |
1499 | } | |
1500 | ||
9aa983d2 | 1501 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1502 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1503 | has_utf8 = TRUE; |
f9a63242 JH |
1504 | if (PL_lex_inwhat == OP_TRANS && |
1505 | PL_sublex_info.sub_op) { | |
1506 | PL_sublex_info.sub_op->op_private |= | |
1507 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1508 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1509 | } |
012bcf8d | 1510 | } |
a0ed51b3 | 1511 | else { |
012bcf8d | 1512 | *d++ = (char)uv; |
a0ed51b3 | 1513 | } |
012bcf8d GS |
1514 | } |
1515 | else { | |
c4d5f83a | 1516 | *d++ = (char) uv; |
a0ed51b3 | 1517 | } |
79072805 | 1518 | continue; |
02aa26ce | 1519 | |
b239daa5 | 1520 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1521 | case 'N': |
55eda711 | 1522 | ++s; |
423cee85 JH |
1523 | if (*s == '{') { |
1524 | char* e = strchr(s, '}'); | |
155aba94 | 1525 | SV *res; |
423cee85 JH |
1526 | STRLEN len; |
1527 | char *str; | |
4e553d73 | 1528 | |
423cee85 | 1529 | if (!e) { |
5777a3f7 | 1530 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1531 | e = s - 1; |
1532 | goto cont_scan; | |
1533 | } | |
dbc0d4f2 JH |
1534 | if (e > s + 2 && s[1] == 'U' && s[2] == '+') { |
1535 | /* \N{U+...} */ | |
1536 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | | |
1537 | PERL_SCAN_DISALLOW_PREFIX; | |
1538 | s += 3; | |
1539 | len = e - s; | |
1540 | uv = grok_hex(s, &len, &flags, NULL); | |
1541 | s = e + 1; | |
1542 | goto NUM_ESCAPE_INSERT; | |
1543 | } | |
55eda711 JH |
1544 | res = newSVpvn(s + 1, e - s - 1); |
1545 | res = new_constant( Nullch, 0, "charnames", | |
1546 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1547 | if (has_utf8) |
1548 | sv_utf8_upgrade(res); | |
423cee85 | 1549 | str = SvPV(res,len); |
1c47067b JH |
1550 | #ifdef EBCDIC_NEVER_MIND |
1551 | /* charnames uses pack U and that has been | |
1552 | * recently changed to do the below uni->native | |
1553 | * mapping, so this would be redundant (and wrong, | |
1554 | * the code point would be doubly converted). | |
1555 | * But leave this in just in case the pack U change | |
1556 | * gets revoked, but the semantics is still | |
1557 | * desireable for charnames. --jhi */ | |
cddc7ef4 JH |
1558 | { |
1559 | UV uv = utf8_to_uvchr((U8*)str, 0); | |
1560 | ||
1561 | if (uv < 0x100) { | |
1562 | U8 tmpbuf[UTF8_MAXLEN+1], *d; | |
1563 | ||
1564 | d = uvchr_to_utf8(tmpbuf, UNI_TO_NATIVE(uv)); | |
1565 | sv_setpvn(res, (char *)tmpbuf, d - tmpbuf); | |
1566 | str = SvPV(res, len); | |
1567 | } | |
1568 | } | |
1569 | #endif | |
89491803 | 1570 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1571 | char *ostart = SvPVX(sv); |
1572 | SvCUR_set(sv, d - ostart); | |
1573 | SvPOK_on(sv); | |
e4f3eed8 | 1574 | *d = '\0'; |
f08d6ad9 | 1575 | sv_utf8_upgrade(sv); |
d2f449dd | 1576 | /* this just broke our allocation above... */ |
eb160463 | 1577 | SvGROW(sv, (STRLEN)(send - start)); |
f08d6ad9 | 1578 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1579 | has_utf8 = TRUE; |
f08d6ad9 | 1580 | } |
eb160463 | 1581 | if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1582 | char *odest = SvPVX(sv); |
1583 | ||
8973db79 | 1584 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1585 | d = SvPVX(sv) + (d - odest); |
1586 | } | |
1587 | Copy(str, d, len, char); | |
1588 | d += len; | |
1589 | SvREFCNT_dec(res); | |
1590 | cont_scan: | |
1591 | s = e + 1; | |
1592 | } | |
1593 | else | |
5777a3f7 | 1594 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1595 | continue; |
1596 | ||
02aa26ce | 1597 | /* \c is a control character */ |
79072805 LW |
1598 | case 'c': |
1599 | s++; | |
961ce445 | 1600 | if (s < send) { |
ba210ebe | 1601 | U8 c = *s++; |
c7f1f016 NIS |
1602 | #ifdef EBCDIC |
1603 | if (isLOWER(c)) | |
1604 | c = toUPPER(c); | |
1605 | #endif | |
db42d148 | 1606 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1607 | } |
961ce445 RGS |
1608 | else { |
1609 | yyerror("Missing control char name in \\c"); | |
1610 | } | |
79072805 | 1611 | continue; |
02aa26ce NT |
1612 | |
1613 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1614 | case 'b': |
db42d148 | 1615 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1616 | break; |
1617 | case 'n': | |
db42d148 | 1618 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1619 | break; |
1620 | case 'r': | |
db42d148 | 1621 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1622 | break; |
1623 | case 'f': | |
db42d148 | 1624 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1625 | break; |
1626 | case 't': | |
db42d148 | 1627 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1628 | break; |
34a3fe2a | 1629 | case 'e': |
db42d148 | 1630 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1631 | break; |
1632 | case 'a': | |
db42d148 | 1633 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1634 | break; |
02aa26ce NT |
1635 | } /* end switch */ |
1636 | ||
79072805 LW |
1637 | s++; |
1638 | continue; | |
02aa26ce NT |
1639 | } /* end if (backslash) */ |
1640 | ||
f9a63242 | 1641 | default_action: |
2b9d42f0 NIS |
1642 | /* If we started with encoded form, or already know we want it |
1643 | and then encode the next character */ | |
1644 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1645 | STRLEN len = 1; | |
1646 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1647 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1648 | s += len; | |
1649 | if (need > len) { | |
1650 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1651 | STRLEN off = d - SvPVX(sv); | |
1652 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1653 | } | |
1654 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1655 | has_utf8 = TRUE; | |
1656 | } | |
1657 | else { | |
1658 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1659 | } | |
02aa26ce NT |
1660 | } /* while loop to process each character */ |
1661 | ||
1662 | /* terminate the string and set up the sv */ | |
79072805 | 1663 | *d = '\0'; |
463ee0b2 | 1664 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1665 | if (SvCUR(sv) >= SvLEN(sv)) |
d0063567 | 1666 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1667 | |
79072805 | 1668 | SvPOK_on(sv); |
9f4817db | 1669 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
1670 | sv_recode_to_utf8(sv, PL_encoding); |
1671 | if (SvUTF8(sv)) | |
1672 | has_utf8 = TRUE; | |
9f4817db | 1673 | } |
2b9d42f0 | 1674 | if (has_utf8) { |
7e2040f0 | 1675 | SvUTF8_on(sv); |
2b9d42f0 | 1676 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 1677 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
1678 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
1679 | } | |
1680 | } | |
79072805 | 1681 | |
02aa26ce | 1682 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1683 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1684 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1685 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1686 | } |
02aa26ce | 1687 | |
9b599b2a | 1688 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1689 | if (s > PL_bufptr) { |
1690 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1691 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1692 | sv, Nullsv, |
4e553d73 | 1693 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1694 | ? "tr" |
3280af22 | 1695 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1696 | ? "s" |
1697 | : "qq"))); | |
79072805 | 1698 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1699 | } else |
8990e307 | 1700 | SvREFCNT_dec(sv); |
79072805 LW |
1701 | return s; |
1702 | } | |
1703 | ||
ffb4593c NT |
1704 | /* S_intuit_more |
1705 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1706 | * FALSE otherwise. | |
ffb4593c NT |
1707 | * |
1708 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1709 | * | |
1710 | * ->[ and ->{ return TRUE | |
1711 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1712 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1713 | * if we're in a pattern and the first char is a { | |
1714 | * {4,5} (any digits around the comma) returns FALSE | |
1715 | * if we're in a pattern and the first char is a [ | |
1716 | * [] returns FALSE | |
1717 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1718 | * character class or not. It has to deal with things like | |
1719 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1720 | * anything else returns TRUE | |
1721 | */ | |
1722 | ||
9cbb5ea2 GS |
1723 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1724 | ||
76e3520e | 1725 | STATIC int |
cea2e8a9 | 1726 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1727 | { |
3280af22 | 1728 | if (PL_lex_brackets) |
79072805 LW |
1729 | return TRUE; |
1730 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1731 | return TRUE; | |
1732 | if (*s != '{' && *s != '[') | |
1733 | return FALSE; | |
3280af22 | 1734 | if (!PL_lex_inpat) |
79072805 LW |
1735 | return TRUE; |
1736 | ||
1737 | /* In a pattern, so maybe we have {n,m}. */ | |
1738 | if (*s == '{') { | |
1739 | s++; | |
1740 | if (!isDIGIT(*s)) | |
1741 | return TRUE; | |
1742 | while (isDIGIT(*s)) | |
1743 | s++; | |
1744 | if (*s == ',') | |
1745 | s++; | |
1746 | while (isDIGIT(*s)) | |
1747 | s++; | |
1748 | if (*s == '}') | |
1749 | return FALSE; | |
1750 | return TRUE; | |
1751 | ||
1752 | } | |
1753 | ||
1754 | /* On the other hand, maybe we have a character class */ | |
1755 | ||
1756 | s++; | |
1757 | if (*s == ']' || *s == '^') | |
1758 | return FALSE; | |
1759 | else { | |
ffb4593c | 1760 | /* this is terrifying, and it works */ |
79072805 LW |
1761 | int weight = 2; /* let's weigh the evidence */ |
1762 | char seen[256]; | |
f27ffc4a | 1763 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1764 | char *send = strchr(s,']'); |
3280af22 | 1765 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1766 | |
1767 | if (!send) /* has to be an expression */ | |
1768 | return TRUE; | |
1769 | ||
1770 | Zero(seen,256,char); | |
1771 | if (*s == '$') | |
1772 | weight -= 3; | |
1773 | else if (isDIGIT(*s)) { | |
1774 | if (s[1] != ']') { | |
1775 | if (isDIGIT(s[1]) && s[2] == ']') | |
1776 | weight -= 10; | |
1777 | } | |
1778 | else | |
1779 | weight -= 100; | |
1780 | } | |
1781 | for (; s < send; s++) { | |
1782 | last_un_char = un_char; | |
1783 | un_char = (unsigned char)*s; | |
1784 | switch (*s) { | |
1785 | case '@': | |
1786 | case '&': | |
1787 | case '$': | |
1788 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1789 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1790 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1791 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1792 | weight -= 100; |
1793 | else | |
1794 | weight -= 10; | |
1795 | } | |
1796 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1797 | strchr("[#!%*<>()-=",s[1])) { |
1798 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1799 | weight -= 10; |
1800 | else | |
1801 | weight -= 1; | |
1802 | } | |
1803 | break; | |
1804 | case '\\': | |
1805 | un_char = 254; | |
1806 | if (s[1]) { | |
93a17b20 | 1807 | if (strchr("wds]",s[1])) |
79072805 LW |
1808 | weight += 100; |
1809 | else if (seen['\''] || seen['"']) | |
1810 | weight += 1; | |
93a17b20 | 1811 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1812 | weight += 40; |
1813 | else if (isDIGIT(s[1])) { | |
1814 | weight += 40; | |
1815 | while (s[1] && isDIGIT(s[1])) | |
1816 | s++; | |
1817 | } | |
1818 | } | |
1819 | else | |
1820 | weight += 100; | |
1821 | break; | |
1822 | case '-': | |
1823 | if (s[1] == '\\') | |
1824 | weight += 50; | |
93a17b20 | 1825 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1826 | weight += 30; |
93a17b20 | 1827 | if (strchr("zZ79~",s[1])) |
79072805 | 1828 | weight += 30; |
f27ffc4a GS |
1829 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1830 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1831 | break; |
1832 | default: | |
93a17b20 | 1833 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1834 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1835 | char *d = tmpbuf; | |
1836 | while (isALPHA(*s)) | |
1837 | *d++ = *s++; | |
1838 | *d = '\0'; | |
1839 | if (keyword(tmpbuf, d - tmpbuf)) | |
1840 | weight -= 150; | |
1841 | } | |
1842 | if (un_char == last_un_char + 1) | |
1843 | weight += 5; | |
1844 | weight -= seen[un_char]; | |
1845 | break; | |
1846 | } | |
1847 | seen[un_char]++; | |
1848 | } | |
1849 | if (weight >= 0) /* probably a character class */ | |
1850 | return FALSE; | |
1851 | } | |
1852 | ||
1853 | return TRUE; | |
1854 | } | |
ffed7fef | 1855 | |
ffb4593c NT |
1856 | /* |
1857 | * S_intuit_method | |
1858 | * | |
1859 | * Does all the checking to disambiguate | |
1860 | * foo bar | |
1861 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1862 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1863 | * | |
1864 | * First argument is the stuff after the first token, e.g. "bar". | |
1865 | * | |
1866 | * Not a method if bar is a filehandle. | |
1867 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1868 | * Not a method if it's really "Foo $bar" | |
1869 | * Method if it's "foo $bar" | |
1870 | * Not a method if it's really "print foo $bar" | |
1871 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 1872 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 1873 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1874 | * => |
1875 | */ | |
1876 | ||
76e3520e | 1877 | STATIC int |
cea2e8a9 | 1878 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1879 | { |
1880 | char *s = start + (*start == '$'); | |
3280af22 | 1881 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1882 | STRLEN len; |
1883 | GV* indirgv; | |
1884 | ||
1885 | if (gv) { | |
b6c543e3 | 1886 | CV *cv; |
a0d0e21e LW |
1887 | if (GvIO(gv)) |
1888 | return 0; | |
b6c543e3 IZ |
1889 | if ((cv = GvCVu(gv))) { |
1890 | char *proto = SvPVX(cv); | |
1891 | if (proto) { | |
1892 | if (*proto == ';') | |
1893 | proto++; | |
1894 | if (*proto == '*') | |
1895 | return 0; | |
1896 | } | |
1897 | } else | |
a0d0e21e LW |
1898 | gv = 0; |
1899 | } | |
8903cb82 | 1900 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1901 | /* start is the beginning of the possible filehandle/object, |
1902 | * and s is the end of it | |
1903 | * tmpbuf is a copy of it | |
1904 | */ | |
1905 | ||
a0d0e21e | 1906 | if (*start == '$') { |
3280af22 | 1907 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1908 | return 0; |
1909 | s = skipspace(s); | |
3280af22 NIS |
1910 | PL_bufptr = start; |
1911 | PL_expect = XREF; | |
a0d0e21e LW |
1912 | return *s == '(' ? FUNCMETH : METHOD; |
1913 | } | |
1914 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1915 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1916 | len -= 2; | |
1917 | tmpbuf[len] = '\0'; | |
1918 | goto bare_package; | |
1919 | } | |
1920 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1921 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1922 | return 0; |
1923 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1924 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1925 | s = skipspace(s); |
3280af22 | 1926 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1927 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1928 | bare_package: |
3280af22 | 1929 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1930 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1931 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1932 | PL_expect = XTERM; | |
a0d0e21e | 1933 | force_next(WORD); |
3280af22 | 1934 | PL_bufptr = s; |
a0d0e21e LW |
1935 | return *s == '(' ? FUNCMETH : METHOD; |
1936 | } | |
1937 | } | |
1938 | return 0; | |
1939 | } | |
1940 | ||
ffb4593c NT |
1941 | /* |
1942 | * S_incl_perldb | |
1943 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1944 | * is set, it will return the contents of that, otherwise a | |
1945 | * compile-time require of perl5db.pl. | |
1946 | */ | |
1947 | ||
76e3520e | 1948 | STATIC char* |
cea2e8a9 | 1949 | S_incl_perldb(pTHX) |
a0d0e21e | 1950 | { |
3280af22 | 1951 | if (PL_perldb) { |
76e3520e | 1952 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1953 | |
1954 | if (pdb) | |
1955 | return pdb; | |
93189314 | 1956 | SETERRNO(0,SS_NORMAL); |
a0d0e21e LW |
1957 | return "BEGIN { require 'perl5db.pl' }"; |
1958 | } | |
1959 | return ""; | |
1960 | } | |
1961 | ||
1962 | ||
16d20bd9 | 1963 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 1964 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
1965 | * Note that the filter function only applies to the current source file |
1966 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1967 | * | |
1968 | * The datasv parameter (which may be NULL) can be used to pass | |
1969 | * private data to this instance of the filter. The filter function | |
1970 | * can recover the SV using the FILTER_DATA macro and use it to | |
1971 | * store private buffers and state information. | |
1972 | * | |
1973 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 1974 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 1975 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
1976 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1977 | * private use must be set using malloc'd pointers. | |
1978 | */ | |
16d20bd9 AD |
1979 | |
1980 | SV * | |
864dbfa3 | 1981 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1982 | { |
f4c556ac GS |
1983 | if (!funcp) |
1984 | return Nullsv; | |
1985 | ||
3280af22 NIS |
1986 | if (!PL_rsfp_filters) |
1987 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1988 | if (!datasv) |
8c52afec | 1989 | datasv = NEWSV(255,0); |
16d20bd9 | 1990 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1991 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 1992 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 1993 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 1994 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 1995 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
1996 | av_unshift(PL_rsfp_filters, 1); |
1997 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1998 | return(datasv); |
1999 | } | |
4e553d73 | 2000 | |
16d20bd9 AD |
2001 | |
2002 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2003 | void |
864dbfa3 | 2004 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2005 | { |
e0c19803 | 2006 | SV *datasv; |
fe5a182c | 2007 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2008 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2009 | return; |
2010 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2011 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2012 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2013 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2014 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2015 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2016 | |
16d20bd9 AD |
2017 | return; |
2018 | } | |
2019 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2020 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2021 | } |
2022 | ||
2023 | ||
2024 | /* Invoke the n'th filter function for the current rsfp. */ | |
2025 | I32 | |
864dbfa3 | 2026 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
4e553d73 NIS |
2027 | |
2028 | ||
8ac85365 | 2029 | /* 0 = read one text line */ |
a0d0e21e | 2030 | { |
16d20bd9 AD |
2031 | filter_t funcp; |
2032 | SV *datasv = NULL; | |
e50aee73 | 2033 | |
3280af22 | 2034 | if (!PL_rsfp_filters) |
16d20bd9 | 2035 | return -1; |
3280af22 | 2036 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
2037 | /* Provide a default input filter to make life easy. */ |
2038 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2039 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2040 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2041 | if (maxlen) { |
16d20bd9 AD |
2042 | /* Want a block */ |
2043 | int len ; | |
2044 | int old_len = SvCUR(buf_sv) ; | |
2045 | ||
2046 | /* ensure buf_sv is large enough */ | |
eb160463 | 2047 | SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ; |
3280af22 NIS |
2048 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2049 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2050 | return -1; /* error */ |
2051 | else | |
2052 | return 0 ; /* end of file */ | |
2053 | } | |
16d20bd9 AD |
2054 | SvCUR_set(buf_sv, old_len + len) ; |
2055 | } else { | |
2056 | /* Want a line */ | |
3280af22 NIS |
2057 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2058 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2059 | return -1; /* error */ |
2060 | else | |
2061 | return 0 ; /* end of file */ | |
2062 | } | |
16d20bd9 AD |
2063 | } |
2064 | return SvCUR(buf_sv); | |
2065 | } | |
2066 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 2067 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
2068 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2069 | "filter_read %d: skipped (filter deleted)\n", | |
2070 | idx)); | |
16d20bd9 AD |
2071 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2072 | } | |
2073 | /* Get function pointer hidden within datasv */ | |
4755096e | 2074 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2075 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2076 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2077 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2078 | /* Call function. The function is expected to */ |
2079 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2080 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2081 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2082 | } |
2083 | ||
76e3520e | 2084 | STATIC char * |
cea2e8a9 | 2085 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2086 | { |
c39cd008 | 2087 | #ifdef PERL_CR_FILTER |
3280af22 | 2088 | if (!PL_rsfp_filters) { |
c39cd008 | 2089 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2090 | } |
2091 | #endif | |
3280af22 | 2092 | if (PL_rsfp_filters) { |
16d20bd9 | 2093 | |
55497cff | 2094 | if (!append) |
2095 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2096 | if (FILTER_READ(0, sv, 0) > 0) |
2097 | return ( SvPVX(sv) ) ; | |
2098 | else | |
2099 | return Nullch ; | |
2100 | } | |
9d116dd7 | 2101 | else |
fd049845 | 2102 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2103 | } |
2104 | ||
01ec43d0 GS |
2105 | STATIC HV * |
2106 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2107 | { |
2108 | GV *gv; | |
2109 | ||
01ec43d0 | 2110 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2111 | return PL_curstash; |
2112 | ||
2113 | if (len > 2 && | |
2114 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2115 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2116 | { | |
2117 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2118 | } |
2119 | ||
2120 | /* use constant CLASS => 'MyClass' */ | |
2121 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2122 | SV *sv; | |
2123 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2124 | pkgname = SvPV_nolen(sv); | |
2125 | } | |
2126 | } | |
2127 | ||
2128 | return gv_stashpv(pkgname, FALSE); | |
2129 | } | |
a0d0e21e | 2130 | |
748a9306 LW |
2131 | #ifdef DEBUGGING |
2132 | static char* exp_name[] = | |
09bef843 | 2133 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 2134 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 2135 | }; |
748a9306 | 2136 | #endif |
463ee0b2 | 2137 | |
02aa26ce NT |
2138 | /* |
2139 | yylex | |
2140 | ||
2141 | Works out what to call the token just pulled out of the input | |
2142 | stream. The yacc parser takes care of taking the ops we return and | |
2143 | stitching them into a tree. | |
2144 | ||
2145 | Returns: | |
2146 | PRIVATEREF | |
2147 | ||
2148 | Structure: | |
2149 | if read an identifier | |
2150 | if we're in a my declaration | |
2151 | croak if they tried to say my($foo::bar) | |
2152 | build the ops for a my() declaration | |
2153 | if it's an access to a my() variable | |
2154 | are we in a sort block? | |
2155 | croak if my($a); $a <=> $b | |
2156 | build ops for access to a my() variable | |
2157 | if in a dq string, and they've said @foo and we can't find @foo | |
2158 | croak | |
2159 | build ops for a bareword | |
2160 | if we already built the token before, use it. | |
2161 | */ | |
2162 | ||
20141f0e | 2163 | |
dba4d153 JH |
2164 | #ifdef __SC__ |
2165 | #pragma segment Perl_yylex | |
2166 | #endif | |
dba4d153 | 2167 | int |
dba4d153 | 2168 | Perl_yylex(pTHX) |
20141f0e | 2169 | { |
79072805 | 2170 | register char *s; |
378cc40b | 2171 | register char *d; |
79072805 | 2172 | register I32 tmp; |
463ee0b2 | 2173 | STRLEN len; |
161b471a NIS |
2174 | GV *gv = Nullgv; |
2175 | GV **gvp = 0; | |
aa7440fb | 2176 | bool bof = FALSE; |
1d239bbb | 2177 | I32 orig_keyword = 0; |
a687059c | 2178 | |
02aa26ce | 2179 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2180 | if (PL_pending_ident) |
e930465f | 2181 | return S_pending_ident(aTHX); |
bbce6d69 | 2182 | |
02aa26ce NT |
2183 | /* no identifier pending identification */ |
2184 | ||
3280af22 | 2185 | switch (PL_lex_state) { |
79072805 LW |
2186 | #ifdef COMMENTARY |
2187 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2188 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2189 | break; | |
2190 | #endif | |
2191 | ||
09bef843 | 2192 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2193 | case LEX_KNOWNEXT: |
3280af22 NIS |
2194 | PL_nexttoke--; |
2195 | yylval = PL_nextval[PL_nexttoke]; | |
2196 | if (!PL_nexttoke) { | |
2197 | PL_lex_state = PL_lex_defer; | |
2198 | PL_expect = PL_lex_expect; | |
2199 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2200 | } |
607df283 | 2201 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2202 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2203 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2204 | |
3280af22 | 2205 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2206 | |
02aa26ce | 2207 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2208 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2209 | */ |
79072805 LW |
2210 | case LEX_INTERPCASEMOD: |
2211 | #ifdef DEBUGGING | |
3280af22 | 2212 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2213 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2214 | #endif |
02aa26ce | 2215 | /* handle \E or end of string */ |
3280af22 | 2216 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2217 | char oldmod; |
02aa26ce NT |
2218 | |
2219 | /* if at a \E */ | |
3280af22 NIS |
2220 | if (PL_lex_casemods) { |
2221 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2222 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2223 | |
3280af22 NIS |
2224 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2225 | PL_bufptr += 2; | |
2226 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2227 | } |
79072805 LW |
2228 | return ')'; |
2229 | } | |
3280af22 NIS |
2230 | if (PL_bufptr != PL_bufend) |
2231 | PL_bufptr += 2; | |
2232 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2233 | return yylex(); |
79072805 LW |
2234 | } |
2235 | else { | |
607df283 | 2236 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2237 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2238 | s = PL_bufptr + 1; |
6e909404 JH |
2239 | if (s[1] == '\\' && s[2] == 'E') { |
2240 | PL_bufptr = s + 3; | |
2241 | PL_lex_state = LEX_INTERPCONCAT; | |
2242 | return yylex(); | |
a0d0e21e | 2243 | } |
6e909404 JH |
2244 | else { |
2245 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
2246 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
2247 | if (strchr("LU", *s) && | |
2248 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) { | |
2249 | PL_lex_casestack[--PL_lex_casemods] = '\0'; | |
2250 | return ')'; | |
2251 | } | |
2252 | if (PL_lex_casemods > 10) | |
2253 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2254 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
2255 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2256 | PL_lex_state = LEX_INTERPCONCAT; | |
2257 | PL_nextval[PL_nexttoke].ival = 0; | |
2258 | force_next('('); | |
2259 | if (*s == 'l') | |
2260 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; | |
2261 | else if (*s == 'u') | |
2262 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; | |
2263 | else if (*s == 'L') | |
2264 | PL_nextval[PL_nexttoke].ival = OP_LC; | |
2265 | else if (*s == 'U') | |
2266 | PL_nextval[PL_nexttoke].ival = OP_UC; | |
2267 | else if (*s == 'Q') | |
2268 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; | |
2269 | else | |
2270 | Perl_croak(aTHX_ "panic: yylex"); | |
2271 | PL_bufptr = s + 1; | |
a0d0e21e | 2272 | } |
79072805 | 2273 | force_next(FUNC); |
3280af22 NIS |
2274 | if (PL_lex_starts) { |
2275 | s = PL_bufptr; | |
2276 | PL_lex_starts = 0; | |
79072805 LW |
2277 | Aop(OP_CONCAT); |
2278 | } | |
2279 | else | |
cea2e8a9 | 2280 | return yylex(); |
79072805 LW |
2281 | } |
2282 | ||
55497cff | 2283 | case LEX_INTERPPUSH: |
2284 | return sublex_push(); | |
2285 | ||
79072805 | 2286 | case LEX_INTERPSTART: |
3280af22 | 2287 | if (PL_bufptr == PL_bufend) |
79072805 | 2288 | return sublex_done(); |
607df283 | 2289 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2290 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2291 | PL_expect = XTERM; |
2292 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2293 | PL_lex_state = LEX_INTERPNORMAL; | |
2294 | if (PL_lex_dojoin) { | |
2295 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2296 | force_next(','); |
a0d0e21e | 2297 | force_ident("\"", '$'); |
3280af22 | 2298 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2299 | force_next('$'); |
3280af22 | 2300 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2301 | force_next('('); |
3280af22 | 2302 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2303 | force_next(FUNC); |
2304 | } | |
3280af22 NIS |
2305 | if (PL_lex_starts++) { |
2306 | s = PL_bufptr; | |
79072805 LW |
2307 | Aop(OP_CONCAT); |
2308 | } | |
cea2e8a9 | 2309 | return yylex(); |
79072805 LW |
2310 | |
2311 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2312 | if (intuit_more(PL_bufptr)) { |
2313 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2314 | break; |
2315 | } | |
2316 | /* FALL THROUGH */ | |
2317 | ||
2318 | case LEX_INTERPEND: | |
3280af22 NIS |
2319 | if (PL_lex_dojoin) { |
2320 | PL_lex_dojoin = FALSE; | |
2321 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2322 | return ')'; |
2323 | } | |
43a16006 | 2324 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2325 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2326 | { |
e9fa98b2 | 2327 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2328 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2329 | PL_lex_repl = Nullsv; |
2330 | } | |
79072805 LW |
2331 | /* FALLTHROUGH */ |
2332 | case LEX_INTERPCONCAT: | |
2333 | #ifdef DEBUGGING | |
3280af22 | 2334 | if (PL_lex_brackets) |
cea2e8a9 | 2335 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2336 | #endif |
3280af22 | 2337 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2338 | return sublex_done(); |
2339 | ||
3280af22 NIS |
2340 | if (SvIVX(PL_linestr) == '\'') { |
2341 | SV *sv = newSVsv(PL_linestr); | |
2342 | if (!PL_lex_inpat) | |
76e3520e | 2343 | sv = tokeq(sv); |
3280af22 | 2344 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2345 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2346 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2347 | s = PL_bufend; |
79072805 LW |
2348 | } |
2349 | else { | |
3280af22 | 2350 | s = scan_const(PL_bufptr); |
79072805 | 2351 | if (*s == '\\') |
3280af22 | 2352 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2353 | else |
3280af22 | 2354 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2355 | } |
2356 | ||
3280af22 NIS |
2357 | if (s != PL_bufptr) { |
2358 | PL_nextval[PL_nexttoke] = yylval; | |
2359 | PL_expect = XTERM; | |
79072805 | 2360 | force_next(THING); |
3280af22 | 2361 | if (PL_lex_starts++) |
79072805 LW |
2362 | Aop(OP_CONCAT); |
2363 | else { | |
3280af22 | 2364 | PL_bufptr = s; |
cea2e8a9 | 2365 | return yylex(); |
79072805 LW |
2366 | } |
2367 | } | |
2368 | ||
cea2e8a9 | 2369 | return yylex(); |
a0d0e21e | 2370 | case LEX_FORMLINE: |
3280af22 NIS |
2371 | PL_lex_state = LEX_NORMAL; |
2372 | s = scan_formline(PL_bufptr); | |
2373 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2374 | goto rightbracket; |
2375 | OPERATOR(';'); | |
79072805 LW |
2376 | } |
2377 | ||
3280af22 NIS |
2378 | s = PL_bufptr; |
2379 | PL_oldoldbufptr = PL_oldbufptr; | |
2380 | PL_oldbufptr = s; | |
607df283 | 2381 | DEBUG_T( { |
bf49b057 GS |
2382 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2383 | exp_name[PL_expect], s); | |
5f80b19c | 2384 | } ); |
463ee0b2 LW |
2385 | |
2386 | retry: | |
378cc40b LW |
2387 | switch (*s) { |
2388 | default: | |
7e2040f0 | 2389 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2390 | goto keylookup; |
cea2e8a9 | 2391 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2392 | case 4: |
2393 | case 26: | |
2394 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2395 | case 0: |
3280af22 NIS |
2396 | if (!PL_rsfp) { |
2397 | PL_last_uni = 0; | |
2398 | PL_last_lop = 0; | |
c5ee2135 WL |
2399 | if (PL_lex_brackets) { |
2400 | if (PL_lex_formbrack) | |
2401 | yyerror("Format not terminated"); | |
2402 | else | |
2403 | yyerror("Missing right curly or square bracket"); | |
2404 | } | |
4e553d73 | 2405 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2406 | "### Tokener got EOF\n"); |
5f80b19c | 2407 | } ); |
79072805 | 2408 | TOKEN(0); |
463ee0b2 | 2409 | } |
3280af22 | 2410 | if (s++ < PL_bufend) |
a687059c | 2411 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2412 | PL_last_uni = 0; |
2413 | PL_last_lop = 0; | |
2414 | if (!PL_in_eval && !PL_preambled) { | |
2415 | PL_preambled = TRUE; | |
2416 | sv_setpv(PL_linestr,incl_perldb()); | |
2417 | if (SvCUR(PL_linestr)) | |
2418 | sv_catpv(PL_linestr,";"); | |
2419 | if (PL_preambleav){ | |
2420 | while(AvFILLp(PL_preambleav) >= 0) { | |
2421 | SV *tmpsv = av_shift(PL_preambleav); | |
2422 | sv_catsv(PL_linestr, tmpsv); | |
2423 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2424 | sv_free(tmpsv); |
2425 | } | |
3280af22 NIS |
2426 | sv_free((SV*)PL_preambleav); |
2427 | PL_preambleav = NULL; | |
91b7def8 | 2428 | } |
3280af22 NIS |
2429 | if (PL_minus_n || PL_minus_p) { |
2430 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2431 | if (PL_minus_l) | |
2432 | sv_catpv(PL_linestr,"chomp;"); | |
2433 | if (PL_minus_a) { | |
3280af22 NIS |
2434 | if (PL_minus_F) { |
2435 | if (strchr("/'\"", *PL_splitstr) | |
2436 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
3db68c4c | 2437 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2438 | else { |
2439 | char delim; | |
2440 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2441 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2442 | delim = *s; |
75c72d73 | 2443 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2444 | "q" + (delim == '\''), delim); |
3280af22 | 2445 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2446 | if (*s == '\\') |
3280af22 NIS |
2447 | sv_catpvn(PL_linestr, "\\", 1); |
2448 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2449 | } |
cea2e8a9 | 2450 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2451 | } |
2304df62 AD |
2452 | } |
2453 | else | |
75c72d73 | 2454 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2455 | } |
79072805 | 2456 | } |
3280af22 NIS |
2457 | sv_catpv(PL_linestr, "\n"); |
2458 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2459 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2460 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2461 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2462 | SV *sv = NEWSV(85,0); |
2463 | ||
2464 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2465 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2466 | (void)SvIOK_on(sv); |
2467 | SvIVX(sv) = 0; | |
57843af0 | 2468 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2469 | } |
79072805 | 2470 | goto retry; |
a687059c | 2471 | } |
e929a76b | 2472 | do { |
aa7440fb | 2473 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2474 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2475 | fake_eof: | |
2476 | if (PL_rsfp) { | |
2477 | if (PL_preprocess && !PL_in_eval) | |
2478 | (void)PerlProc_pclose(PL_rsfp); | |
2479 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2480 | PerlIO_clearerr(PL_rsfp); | |
2481 | else | |
2482 | (void)PerlIO_close(PL_rsfp); | |
2483 | PL_rsfp = Nullfp; | |
2484 | PL_doextract = FALSE; | |
2485 | } | |
2486 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2487 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2488 | sv_catpv(PL_linestr,";}"); | |
2489 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2490 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2491 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2492 | PL_minus_n = PL_minus_p = 0; |
2493 | goto retry; | |
2494 | } | |
2495 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2496 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2497 | sv_setpv(PL_linestr,""); |
2498 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2499 | } | |
2500 | /* if it looks like the start of a BOM, check if it in fact is */ | |
2501 | else if (bof && (!*s || *(U8*)s == 0xEF || *(U8*)s >= 0xFE)) { | |
226017aa | 2502 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2503 | # ifdef __GNU_LIBRARY__ |
2504 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2505 | # define FTELL_FOR_PIPE_IS_BROKEN |
2506 | # endif | |
e3f494f1 JH |
2507 | # else |
2508 | # ifdef __GLIBC__ | |
2509 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2510 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2511 | # endif | |
2512 | # endif | |
226017aa DD |
2513 | # endif |
2514 | #endif | |
2515 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2516 | /* This loses the possibility to detect the bof | |
2517 | * situation on perl -P when the libc5 is being used. | |
2518 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2519 | */ | |
2520 | if (!PL_preprocess) | |
7e28d3af | 2521 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2522 | #else |
eb160463 | 2523 | bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr); |
226017aa | 2524 | #endif |
7e28d3af | 2525 | if (bof) { |
3280af22 | 2526 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2527 | s = swallow_bom((U8*)s); |
e929a76b | 2528 | } |
378cc40b | 2529 | } |
3280af22 | 2530 | if (PL_doextract) { |
a0d0e21e LW |
2531 | /* Incest with pod. */ |
2532 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2533 | sv_setpv(PL_linestr, ""); |
2534 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2535 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2536 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2537 | PL_doextract = FALSE; |
a0d0e21e | 2538 | } |
4e553d73 | 2539 | } |
463ee0b2 | 2540 | incline(s); |
3280af22 NIS |
2541 | } while (PL_doextract); |
2542 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2543 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2544 | SV *sv = NEWSV(85,0); |
a687059c | 2545 | |
93a17b20 | 2546 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2547 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2548 | (void)SvIOK_on(sv); |
2549 | SvIVX(sv) = 0; | |
57843af0 | 2550 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2551 | } |
3280af22 | 2552 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2553 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2554 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2555 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2556 | s++; |
a0d0e21e | 2557 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2558 | s++; |
44a8e56a | 2559 | d = Nullch; |
3280af22 | 2560 | if (!PL_in_eval) { |
44a8e56a | 2561 | if (*s == '#' && *(s+1) == '!') |
2562 | d = s + 2; | |
2563 | #ifdef ALTERNATE_SHEBANG | |
2564 | else { | |
2565 | static char as[] = ALTERNATE_SHEBANG; | |
2566 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2567 | d = s + (sizeof(as) - 1); | |
2568 | } | |
2569 | #endif /* ALTERNATE_SHEBANG */ | |
2570 | } | |
2571 | if (d) { | |
b8378b72 | 2572 | char *ipath; |
774d564b | 2573 | char *ipathend; |
b8378b72 | 2574 | |
774d564b | 2575 | while (isSPACE(*d)) |
b8378b72 CS |
2576 | d++; |
2577 | ipath = d; | |
774d564b | 2578 | while (*d && !isSPACE(*d)) |
2579 | d++; | |
2580 | ipathend = d; | |
2581 | ||
2582 | #ifdef ARG_ZERO_IS_SCRIPT | |
2583 | if (ipathend > ipath) { | |
2584 | /* | |
2585 | * HP-UX (at least) sets argv[0] to the script name, | |
2586 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2587 | * at least, set argv[0] to the basename of the Perl | |
2588 | * interpreter. So, having found "#!", we'll set it right. | |
2589 | */ | |
ee2f7564 | 2590 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2591 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2592 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2593 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2594 | SvSETMAGIC(x); |
2595 | } | |
556c1dec JH |
2596 | else { |
2597 | STRLEN blen; | |
2598 | STRLEN llen; | |
2599 | char *bstart = SvPV(CopFILESV(PL_curcop),blen); | |
2600 | char *lstart = SvPV(x,llen); | |
2601 | if (llen < blen) { | |
2602 | bstart += blen - llen; | |
2603 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
2604 | sv_setpvn(x, ipath, ipathend - ipath); | |
2605 | SvSETMAGIC(x); | |
2606 | } | |
2607 | } | |
2608 | } | |
774d564b | 2609 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2610 | } |
774d564b | 2611 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2612 | |
2613 | /* | |
2614 | * Look for options. | |
2615 | */ | |
748a9306 | 2616 | d = instr(s,"perl -"); |
84e30d1a | 2617 | if (!d) { |
748a9306 | 2618 | d = instr(s,"perl"); |
84e30d1a GS |
2619 | #if defined(DOSISH) |
2620 | /* avoid getting into infinite loops when shebang | |
2621 | * line contains "Perl" rather than "perl" */ | |
2622 | if (!d) { | |
2623 | for (d = ipathend-4; d >= ipath; --d) { | |
2624 | if ((*d == 'p' || *d == 'P') | |
2625 | && !ibcmp(d, "perl", 4)) | |
2626 | { | |
2627 | break; | |
2628 | } | |
2629 | } | |
2630 | if (d < ipath) | |
2631 | d = Nullch; | |
2632 | } | |
2633 | #endif | |
2634 | } | |
44a8e56a | 2635 | #ifdef ALTERNATE_SHEBANG |
2636 | /* | |
2637 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2638 | * character that can be part of a Perl expression, then if | |
2639 | * we see it but not "perl", we're probably looking at the | |
2640 | * start of Perl code, not a request to hand off to some | |
2641 | * other interpreter. Similarly, if "perl" is there, but | |
2642 | * not in the first 'word' of the line, we assume the line | |
2643 | * contains the start of the Perl program. | |
44a8e56a | 2644 | */ |
2645 | if (d && *s != '#') { | |
774d564b | 2646 | char *c = ipath; |
44a8e56a | 2647 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2648 | c++; | |
2649 | if (c < d) | |
2650 | d = Nullch; /* "perl" not in first word; ignore */ | |
2651 | else | |
2652 | *s = '#'; /* Don't try to parse shebang line */ | |
2653 | } | |
774d564b | 2654 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2655 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2656 | if (!d && |
44a8e56a | 2657 | *s == '#' && |
774d564b | 2658 | ipathend > ipath && |
3280af22 | 2659 | !PL_minus_c && |
748a9306 | 2660 | !instr(s,"indir") && |
3280af22 | 2661 | instr(PL_origargv[0],"perl")) |
748a9306 | 2662 | { |
9f68db38 | 2663 | char **newargv; |
9f68db38 | 2664 | |
774d564b | 2665 | *ipathend = '\0'; |
2666 | s = ipathend + 1; | |
3280af22 | 2667 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2668 | s++; |
3280af22 NIS |
2669 | if (s < PL_bufend) { |
2670 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2671 | newargv[1] = s; |
3280af22 | 2672 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2673 | s++; |
2674 | *s = '\0'; | |
3280af22 | 2675 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2676 | } |
2677 | else | |
3280af22 | 2678 | newargv = PL_origargv; |
774d564b | 2679 | newargv[0] = ipath; |
b35112e7 | 2680 | PERL_FPU_PRE_EXEC |
b4748376 | 2681 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 2682 | PERL_FPU_POST_EXEC |
cea2e8a9 | 2683 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2684 | } |
bf4acbe4 | 2685 | #endif |
748a9306 | 2686 | if (d) { |
3280af22 NIS |
2687 | U32 oldpdb = PL_perldb; |
2688 | bool oldn = PL_minus_n; | |
2689 | bool oldp = PL_minus_p; | |
748a9306 LW |
2690 | |
2691 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2692 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2693 | |
2694 | if (*d++ == '-') { | |
a11ec5a9 | 2695 | bool switches_done = PL_doswitches; |
8cc95fdb | 2696 | do { |
2697 | if (*d == 'M' || *d == 'm') { | |
2698 | char *m = d; | |
2699 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2700 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2701 | (int)(d - m), m); |
2702 | } | |
2703 | d = moreswitches(d); | |
2704 | } while (d); | |
f0b2cf55 YST |
2705 | if (PL_doswitches && !switches_done) { |
2706 | int argc = PL_origargc; | |
2707 | char **argv = PL_origargv; | |
2708 | do { | |
2709 | argc--,argv++; | |
2710 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2711 | init_argv_symbols(argc,argv); | |
2712 | } | |
155aba94 GS |
2713 | if ((PERLDB_LINE && !oldpdb) || |
2714 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2715 | /* if we have already added "LINE: while (<>) {", |
2716 | we must not do it again */ | |
748a9306 | 2717 | { |
3280af22 NIS |
2718 | sv_setpv(PL_linestr, ""); |
2719 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2720 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2721 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2722 | PL_preambled = FALSE; |
84902520 | 2723 | if (PERLDB_LINE) |
3280af22 | 2724 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2725 | goto retry; |
2726 | } | |
a11ec5a9 RGS |
2727 | if (PL_doswitches && !switches_done) { |
2728 | int argc = PL_origargc; | |
2729 | char **argv = PL_origargv; | |
2730 | do { | |
2731 | argc--,argv++; | |
2732 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2733 | init_argv_symbols(argc,argv); | |
2734 | } | |
a0d0e21e | 2735 | } |
79072805 | 2736 | } |
9f68db38 | 2737 | } |
79072805 | 2738 | } |
3280af22 NIS |
2739 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2740 | PL_bufptr = s; | |
2741 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2742 | return yylex(); |
ae986130 | 2743 | } |
378cc40b | 2744 | goto retry; |
4fdae800 | 2745 | case '\r': |
6a27c188 | 2746 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2747 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2748 | Perl_croak(aTHX_ |
cc507455 | 2749 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2750 | #endif |
4fdae800 | 2751 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2752 | #ifdef MACOS_TRADITIONAL |
2753 | case '\312': | |
2754 | #endif | |
378cc40b LW |
2755 | s++; |
2756 | goto retry; | |
378cc40b | 2757 | case '#': |
e929a76b | 2758 | case '\n': |
3280af22 | 2759 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2760 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2761 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2762 | CopLINE_dec(PL_curcop); | |
2763 | incline(s); | |
2764 | } | |
3280af22 | 2765 | d = PL_bufend; |
a687059c | 2766 | while (s < d && *s != '\n') |
378cc40b | 2767 | s++; |
0f85fab0 | 2768 | if (s < d) |
378cc40b | 2769 | s++; |
78c267c1 | 2770 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2771 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2772 | incline(s); |
3280af22 NIS |
2773 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2774 | PL_bufptr = s; | |
2775 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2776 | return yylex(); |
a687059c | 2777 | } |
378cc40b | 2778 | } |
a687059c | 2779 | else { |
378cc40b | 2780 | *s = '\0'; |
3280af22 | 2781 | PL_bufend = s; |
a687059c | 2782 | } |
378cc40b LW |
2783 | goto retry; |
2784 | case '-': | |
79072805 | 2785 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2786 | I32 ftst = 0; |
2787 | ||
378cc40b | 2788 | s++; |
3280af22 | 2789 | PL_bufptr = s; |
748a9306 LW |
2790 | tmp = *s++; |
2791 | ||
bf4acbe4 | 2792 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2793 | s++; |
2794 | ||
2795 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2796 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2797 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2798 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2799 | } ); |
748a9306 LW |
2800 | OPERATOR('-'); /* unary minus */ |
2801 | } | |
3280af22 | 2802 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2803 | switch (tmp) { |
e5edeb50 JH |
2804 | case 'r': ftst = OP_FTEREAD; break; |
2805 | case 'w': ftst = OP_FTEWRITE; break; | |
2806 | case 'x': ftst = OP_FTEEXEC; break; | |
2807 | case 'o': ftst = OP_FTEOWNED; break; | |
2808 | case 'R': ftst = OP_FTRREAD; break; | |
2809 | case 'W': ftst = OP_FTRWRITE; break; | |
2810 | case 'X': ftst = OP_FTREXEC; break; | |
2811 | case 'O': ftst = OP_FTROWNED; break; | |
2812 | case 'e': ftst = OP_FTIS; break; | |
2813 | case 'z': ftst = OP_FTZERO; break; | |
2814 | case 's': ftst = OP_FTSIZE; break; | |
2815 | case 'f': ftst = OP_FTFILE; break; | |
2816 | case 'd': ftst = OP_FTDIR; break; | |
2817 | case 'l': ftst = OP_FTLINK; break; | |
2818 | case 'p': ftst = OP_FTPIPE; break; | |
2819 | case 'S': ftst = OP_FTSOCK; break; | |
2820 | case 'u': ftst = OP_FTSUID; break; | |
2821 | case 'g': ftst = OP_FTSGID; break; | |
2822 | case 'k': ftst = OP_FTSVTX; break; | |
2823 | case 'b': ftst = OP_FTBLK; break; | |
2824 | case 'c': ftst = OP_FTCHR; break; | |
2825 | case 't': ftst = OP_FTTTY; break; | |
2826 | case 'T': ftst = OP_FTTEXT; break; | |
2827 | case 'B': ftst = OP_FTBINARY; break; | |
2828 | case 'M': case 'A': case 'C': | |
2829 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2830 | switch (tmp) { | |
2831 | case 'M': ftst = OP_FTMTIME; break; | |
2832 | case 'A': ftst = OP_FTATIME; break; | |
2833 | case 'C': ftst = OP_FTCTIME; break; | |
2834 | default: break; | |
2835 | } | |
2836 | break; | |
378cc40b | 2837 | default: |
378cc40b LW |
2838 | break; |
2839 | } | |
e5edeb50 | 2840 | if (ftst) { |
eb160463 | 2841 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 2842 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 2843 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 2844 | } ); |
e5edeb50 JH |
2845 | FTST(ftst); |
2846 | } | |
2847 | else { | |
2848 | /* Assume it was a minus followed by a one-letter named | |
2849 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 2850 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 RGS |
2851 | "### '-%c' looked like a file test but was not\n", |
2852 | tmp); | |
5f80b19c | 2853 | } ); |
3cf7b4c4 | 2854 | s = --PL_bufptr; |
e5edeb50 | 2855 | } |
378cc40b | 2856 | } |
a687059c LW |
2857 | tmp = *s++; |
2858 | if (*s == tmp) { | |
2859 | s++; | |
3280af22 | 2860 | if (PL_expect == XOPERATOR) |
79072805 LW |
2861 | TERM(POSTDEC); |
2862 | else | |
2863 | OPERATOR(PREDEC); | |
2864 | } | |
2865 | else if (*s == '>') { | |
2866 | s++; | |
2867 | s = skipspace(s); | |
7e2040f0 | 2868 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2869 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2870 | TOKEN(ARROW); |
79072805 | 2871 | } |
748a9306 LW |
2872 | else if (*s == '$') |
2873 | OPERATOR(ARROW); | |
463ee0b2 | 2874 | else |
748a9306 | 2875 | TERM(ARROW); |
a687059c | 2876 | } |
3280af22 | 2877 | if (PL_expect == XOPERATOR) |
79072805 LW |
2878 | Aop(OP_SUBTRACT); |
2879 | else { | |
3280af22 | 2880 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2881 | check_uni(); |
79072805 | 2882 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2883 | } |
79072805 | 2884 | |
378cc40b | 2885 | case '+': |
a687059c LW |
2886 | tmp = *s++; |
2887 | if (*s == tmp) { | |
378cc40b | 2888 | s++; |
3280af22 | 2889 | if (PL_expect == XOPERATOR) |
79072805 LW |
2890 | TERM(POSTINC); |
2891 | else | |
2892 | OPERATOR(PREINC); | |
378cc40b | 2893 | } |
3280af22 | 2894 | if (PL_expect == XOPERATOR) |
79072805 LW |
2895 | Aop(OP_ADD); |
2896 | else { | |
3280af22 | 2897 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2898 | check_uni(); |
a687059c | 2899 | OPERATOR('+'); |
2f3197b3 | 2900 | } |
a687059c | 2901 | |
378cc40b | 2902 | case '*': |
3280af22 NIS |
2903 | if (PL_expect != XOPERATOR) { |
2904 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2905 | PL_expect = XOPERATOR; | |
2906 | force_ident(PL_tokenbuf, '*'); | |
2907 | if (!*PL_tokenbuf) | |
a0d0e21e | 2908 | PREREF('*'); |
79072805 | 2909 | TERM('*'); |
a687059c | 2910 | } |
79072805 LW |
2911 | s++; |
2912 | if (*s == '*') { | |
a687059c | 2913 | s++; |
79072805 | 2914 | PWop(OP_POW); |
a687059c | 2915 | } |
79072805 LW |
2916 | Mop(OP_MULTIPLY); |
2917 | ||
378cc40b | 2918 | case '%': |
3280af22 | 2919 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2920 | ++s; |
2921 | Mop(OP_MODULO); | |
a687059c | 2922 | } |
3280af22 NIS |
2923 | PL_tokenbuf[0] = '%'; |
2924 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2925 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 2926 | PREREF('%'); |
a687059c | 2927 | } |
3280af22 | 2928 | PL_pending_ident = '%'; |
bbce6d69 | 2929 | TERM('%'); |
a687059c | 2930 | |
378cc40b | 2931 | case '^': |
79072805 | 2932 | s++; |
a0d0e21e | 2933 | BOop(OP_BIT_XOR); |
79072805 | 2934 | case '[': |
3280af22 | 2935 | PL_lex_brackets++; |
79072805 | 2936 | /* FALL THROUGH */ |
378cc40b | 2937 | case '~': |
378cc40b | 2938 | case ',': |
378cc40b LW |
2939 | tmp = *s++; |
2940 | OPERATOR(tmp); | |
a0d0e21e LW |
2941 | case ':': |
2942 | if (s[1] == ':') { | |
2943 | len = 0; | |
2944 | goto just_a_word; | |
2945 | } | |
2946 | s++; | |
09bef843 SB |
2947 | switch (PL_expect) { |
2948 | OP *attrs; | |
2949 | case XOPERATOR: | |
2950 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2951 | break; | |
2952 | PL_bufptr = s; /* update in case we back off */ | |
2953 | goto grabattrs; | |
2954 | case XATTRBLOCK: | |
2955 | PL_expect = XBLOCK; | |
2956 | goto grabattrs; | |
2957 | case XATTRTERM: | |
2958 | PL_expect = XTERMBLOCK; | |
2959 | grabattrs: | |
2960 | s = skipspace(s); | |
2961 | attrs = Nullop; | |
7e2040f0 | 2962 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2963 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2964 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2965 | if (tmp < 0) tmp = -tmp; | |
2966 | switch (tmp) { | |
2967 | case KEY_or: | |
2968 | case KEY_and: | |
c963b151 | 2969 | case KEY_err: |
f9829d6b GS |
2970 | case KEY_for: |
2971 | case KEY_unless: | |
2972 | case KEY_if: | |
2973 | case KEY_while: | |
2974 | case KEY_until: | |
2975 | goto got_attrs; | |
2976 | default: | |
2977 | break; | |
2978 | } | |
2979 | } | |
09bef843 SB |
2980 | if (*d == '(') { |
2981 | d = scan_str(d,TRUE,TRUE); | |
2982 | if (!d) { | |
09bef843 SB |
2983 | /* MUST advance bufptr here to avoid bogus |
2984 | "at end of line" context messages from yyerror(). | |
2985 | */ | |
2986 | PL_bufptr = s + len; | |
2987 | yyerror("Unterminated attribute parameter in attribute list"); | |
2988 | if (attrs) | |
2989 | op_free(attrs); | |
2990 | return 0; /* EOF indicator */ | |
2991 | } | |
2992 | } | |
2993 | if (PL_lex_stuff) { | |
2994 | SV *sv = newSVpvn(s, len); | |
2995 | sv_catsv(sv, PL_lex_stuff); | |
2996 | attrs = append_elem(OP_LIST, attrs, | |
2997 | newSVOP(OP_CONST, 0, sv)); | |
2998 | SvREFCNT_dec(PL_lex_stuff); | |
2999 | PL_lex_stuff = Nullsv; | |
3000 | } | |
3001 | else { | |
371fce9b DM |
3002 | if (len == 6 && strnEQ(s, "unique", len)) { |
3003 | if (PL_in_my == KEY_our) | |
3004 | #ifdef USE_ITHREADS | |
3005 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); | |
3006 | #else | |
3007 | ; /* skip to avoid loading attributes.pm */ | |
3008 | #endif | |
3009 | else | |
3010 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); | |
3011 | } | |
3012 | ||
d3cea301 SB |
3013 | /* NOTE: any CV attrs applied here need to be part of |
3014 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
371fce9b | 3015 | else if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
78f9721b SM |
3016 | CvLVALUE_on(PL_compcv); |
3017 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3018 | CvLOCKED_on(PL_compcv); | |
3019 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3020 | CvMETHOD_on(PL_compcv); | |
06492da6 SF |
3021 | else if (!PL_in_my && len == 9 && strnEQ(s, "assertion", len)) |
3022 | CvASSERTION_on(PL_compcv); | |
78f9721b SM |
3023 | /* After we've set the flags, it could be argued that |
3024 | we don't need to do the attributes.pm-based setting | |
3025 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
3026 | flags. To experiment with that, uncomment the |
3027 | following "else". (Note that's already been | |
3028 | uncommented. That keeps the above-applied built-in | |
3029 | attributes from being intercepted (and possibly | |
3030 | rejected) by a package's attribute routines, but is | |
3031 | justified by the performance win for the common case | |
3032 | of applying only built-in attributes.) */ | |
0256094b | 3033 | else |
78f9721b SM |
3034 | attrs = append_elem(OP_LIST, attrs, |
3035 | newSVOP(OP_CONST, 0, | |
3036 | newSVpvn(s, len))); | |
09bef843 SB |
3037 | } |
3038 | s = skipspace(d); | |
0120eecf | 3039 | if (*s == ':' && s[1] != ':') |
09bef843 | 3040 | s = skipspace(s+1); |
0120eecf GS |
3041 | else if (s == d) |
3042 | break; /* require real whitespace or :'s */ | |
09bef843 | 3043 | } |
f9829d6b | 3044 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
8e7ae056 | 3045 | if (*s != ';' && *s != '}' && *s != tmp && (tmp != '=' || *s != ')')) { |
09bef843 SB |
3046 | char q = ((*s == '\'') ? '"' : '\''); |
3047 | /* If here for an expression, and parsed no attrs, back off. */ | |
3048 | if (tmp == '=' && !attrs) { | |
3049 | s = PL_bufptr; | |
3050 | break; | |
3051 | } | |
3052 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3053 | context messages from yyerror(). | |
3054 | */ | |
3055 | PL_bufptr = s; | |
3056 | if (!*s) | |
3057 | yyerror("Unterminated attribute list"); | |
3058 | else | |
3059 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3060 | q, *s, q)); | |
3061 | if (attrs) | |
3062 | op_free(attrs); | |
3063 | OPERATOR(':'); | |
3064 | } | |
f9829d6b | 3065 | got_attrs: |
09bef843 SB |
3066 | if (attrs) { |
3067 | PL_nextval[PL_nexttoke].opval = attrs; | |
3068 | force_next(THING); | |
3069 | } | |
3070 | TOKEN(COLONATTR); | |
3071 | } | |
a0d0e21e | 3072 | OPERATOR(':'); |
8990e307 LW |
3073 | case '(': |
3074 | s++; | |
3280af22 NIS |
3075 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3076 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3077 | else |
3280af22 | 3078 | PL_expect = XTERM; |
4a202259 | 3079 | s = skipspace(s); |
a0d0e21e | 3080 | TOKEN('('); |
378cc40b | 3081 | case ';': |
f4dd75d9 | 3082 | CLINE; |
378cc40b LW |
3083 | tmp = *s++; |
3084 | OPERATOR(tmp); | |
3085 | case ')': | |
378cc40b | 3086 | tmp = *s++; |
16d20bd9 AD |
3087 | s = skipspace(s); |
3088 | if (*s == '{') | |
3089 | PREBLOCK(tmp); | |
378cc40b | 3090 | TERM(tmp); |
79072805 LW |
3091 | case ']': |
3092 | s++; | |
3280af22 | 3093 | if (PL_lex_brackets <= 0) |
d98d5fff | 3094 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3095 | else |
3280af22 NIS |
3096 | --PL_lex_brackets; |
3097 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3098 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3099 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3100 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3101 | } |
3102 | } | |
4633a7c4 | 3103 | TERM(']'); |
79072805 LW |
3104 | case '{': |
3105 | leftbracket: | |
79072805 | 3106 | s++; |
3280af22 | 3107 | if (PL_lex_brackets > 100) { |
8edd5f42 | 3108 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 3109 | } |
3280af22 | 3110 | switch (PL_expect) { |
a0d0e21e | 3111 | case XTERM: |
3280af22 | 3112 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3113 | s--; |
3114 | PRETERMBLOCK(DO); | |
3115 | } | |
3280af22 NIS |
3116 | if (PL_oldoldbufptr == PL_last_lop) |
3117 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3118 | else |
3280af22 | 3119 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3120 | OPERATOR(HASHBRACK); |
a0d0e21e | 3121 | case XOPERATOR: |
bf4acbe4 | 3122 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3123 | s++; |
44a8e56a | 3124 | d = s; |
3280af22 NIS |
3125 | PL_tokenbuf[0] = '\0'; |
3126 | if (d < PL_bufend && *d == '-') { | |
3127 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3128 | d++; |
bf4acbe4 | 3129 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3130 | d++; |
3131 | } | |
7e2040f0 | 3132 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3133 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3134 | FALSE, &len); |
bf4acbe4 | 3135 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3136 | d++; |
3137 | if (*d == '}') { | |
3280af22 | 3138 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3139 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3140 | if (minus) | |
3141 | force_next('-'); | |
748a9306 LW |
3142 | } |
3143 | } | |
3144 | /* FALL THROUGH */ | |
09bef843 | 3145 | case XATTRBLOCK: |
748a9306 | 3146 | case XBLOCK: |
3280af22 NIS |
3147 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3148 | PL_expect = XSTATE; | |
a0d0e21e | 3149 | break; |
09bef843 | 3150 | case XATTRTERM: |
a0d0e21e | 3151 | case XTERMBLOCK: |
3280af22 NIS |
3152 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3153 | PL_expect = XSTATE; | |
a0d0e21e LW |
3154 | break; |
3155 | default: { | |
3156 | char *t; | |
3280af22 NIS |
3157 | if (PL_oldoldbufptr == PL_last_lop) |
3158 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3159 | else |
3280af22 | 3160 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3161 | s = skipspace(s); |
8452ff4b SB |
3162 | if (*s == '}') { |
3163 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3164 | PL_expect = XTERM; | |
3165 | /* This hack is to get the ${} in the message. */ | |
3166 | PL_bufptr = s+1; | |
3167 | yyerror("syntax error"); | |
3168 | break; | |
3169 | } | |
a0d0e21e | 3170 | OPERATOR(HASHBRACK); |
8452ff4b | 3171 | } |
b8a4b1be GS |
3172 | /* This hack serves to disambiguate a pair of curlies |
3173 | * as being a block or an anon hash. Normally, expectation | |
3174 | * determines that, but in cases where we're not in a | |
3175 | * position to expect anything in particular (like inside | |
3176 | * eval"") we have to resolve the ambiguity. This code | |
3177 | * covers the case where the first term in the curlies is a | |
3178 | * quoted string. Most other cases need to be explicitly | |
3179 | * disambiguated by prepending a `+' before the opening | |
3180 | * curly in order to force resolution as an anon hash. | |
3181 | * | |
3182 | * XXX should probably propagate the outer expectation | |
3183 | * into eval"" to rely less on this hack, but that could | |
3184 | * potentially break current behavior of eval"". | |
3185 | * GSAR 97-07-21 | |
3186 | */ | |
3187 | t = s; | |
3188 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3189 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3190 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3191 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3192 | t++; | |
3193 | t++; | |
a0d0e21e | 3194 | } |
b8a4b1be | 3195 | else if (*s == 'q') { |
3280af22 | 3196 | if (++t < PL_bufend |
b8a4b1be | 3197 | && (!isALNUM(*t) |
3280af22 | 3198 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3199 | && !isALNUM(*t)))) |
3200 | { | |
abc667d1 | 3201 | /* skip q//-like construct */ |
b8a4b1be GS |
3202 | char *tmps; |
3203 | char open, close, term; | |
3204 | I32 brackets = 1; | |
3205 | ||
3280af22 | 3206 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 3207 | t++; |
abc667d1 DM |
3208 | /* check for q => */ |
3209 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
3210 | OPERATOR(HASHBRACK); | |
3211 | } | |
b8a4b1be GS |
3212 | term = *t; |
3213 | open = term; | |
3214 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3215 | term = tmps[5]; | |
3216 | close = term; | |
3217 | if (open == close) | |
3280af22 NIS |
3218 | for (t++; t < PL_bufend; t++) { |
3219 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3220 | t++; |
6d07e5e9 | 3221 | else if (*t == open) |
b8a4b1be GS |
3222 | break; |
3223 | } | |
abc667d1 | 3224 | else { |
3280af22 NIS |
3225 | for (t++; t < PL_bufend; t++) { |
3226 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3227 | t++; |
6d07e5e9 | 3228 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3229 | break; |
3230 | else if (*t == open) | |
3231 | brackets++; | |
3232 | } | |
abc667d1 DM |
3233 | } |
3234 | t++; | |
b8a4b1be | 3235 | } |
abc667d1 DM |
3236 | else |
3237 | /* skip plain q word */ | |
3238 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
3239 | t += UTF8SKIP(t); | |
a0d0e21e | 3240 | } |
7e2040f0 | 3241 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3242 | t += UTF8SKIP(t); |
7e2040f0 | 3243 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3244 | t += UTF8SKIP(t); |
a0d0e21e | 3245 | } |
3280af22 | 3246 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3247 | t++; |
b8a4b1be GS |
3248 | /* if comma follows first term, call it an anon hash */ |
3249 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3250 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3251 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3252 | OPERATOR(HASHBRACK); |
3280af22 | 3253 | if (PL_expect == XREF) |
4e4e412b | 3254 | PL_expect = XTERM; |
a0d0e21e | 3255 | else { |
3280af22 NIS |
3256 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3257 | PL_expect = XSTATE; | |
a0d0e21e | 3258 | } |
8990e307 | 3259 | } |
a0d0e21e | 3260 | break; |
463ee0b2 | 3261 | } |
57843af0 | 3262 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3263 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3264 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3265 | TOKEN('{'); |
378cc40b | 3266 | case '}': |
79072805 LW |
3267 | rightbracket: |
3268 | s++; | |
3280af22 | 3269 | if (PL_lex_brackets <= 0) |
d98d5fff | 3270 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3271 | else |
3280af22 | 3272 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3273 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3274 | PL_lex_formbrack = 0; |
3275 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3276 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3277 | if (PL_expect & XFAKEBRACK) { |
3278 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3279 | PL_lex_state = LEX_INTERPEND; |
3280 | PL_bufptr = s; | |
cea2e8a9 | 3281 | return yylex(); /* ignore fake brackets */ |
79072805 | 3282 | } |
fa83b5b6 | 3283 | if (*s == '-' && s[1] == '>') |
3280af22 | 3284 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3285 | else if (*s != '[' && *s != '{') |
3280af22 | 3286 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3287 | } |
3288 | } | |
9059aa12 LW |
3289 | if (PL_expect & XFAKEBRACK) { |
3290 | PL_expect &= XENUMMASK; | |
3280af22 | 3291 | PL_bufptr = s; |
cea2e8a9 | 3292 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3293 | } |
79072805 LW |
3294 | force_next('}'); |
3295 | TOKEN(';'); | |
378cc40b LW |
3296 | case '&': |
3297 | s++; | |
3298 | tmp = *s++; | |
3299 | if (tmp == '&') | |
a0d0e21e | 3300 | AOPERATOR(ANDAND); |
378cc40b | 3301 | s--; |
3280af22 | 3302 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3303 | if (ckWARN(WARN_SEMICOLON) |
3304 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3305 | { | |
57843af0 | 3306 | CopLINE_dec(PL_curcop); |
9014280d | 3307 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3308 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3309 | } |
79072805 | 3310 | BAop(OP_BIT_AND); |
463ee0b2 | 3311 | } |
79072805 | 3312 | |
3280af22 NIS |
3313 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3314 | if (*PL_tokenbuf) { | |
3315 | PL_expect = XOPERATOR; | |
3316 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3317 | } |
79072805 LW |
3318 | else |
3319 | PREREF('&'); | |
c07a80fd | 3320 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3321 | TERM('&'); |
3322 | ||
378cc40b LW |
3323 | case '|': |
3324 | s++; | |
3325 | tmp = *s++; | |
3326 | if (tmp == '|') | |
a0d0e21e | 3327 | AOPERATOR(OROR); |
378cc40b | 3328 | s--; |
79072805 | 3329 | BOop(OP_BIT_OR); |
378cc40b LW |
3330 | case '=': |
3331 | s++; | |
3332 | tmp = *s++; | |
3333 | if (tmp == '=') | |
79072805 LW |
3334 | Eop(OP_EQ); |
3335 | if (tmp == '>') | |
3336 | OPERATOR(','); | |
378cc40b | 3337 | if (tmp == '~') |
79072805 | 3338 | PMop(OP_MATCH); |
599cee73 | 3339 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
9014280d | 3340 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Reversed %c= operator",(int)tmp); |
378cc40b | 3341 | s--; |
3280af22 NIS |
3342 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3343 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3344 | { |
3280af22 NIS |
3345 | if (PL_in_eval && !PL_rsfp) { |
3346 | d = PL_bufend; | |
a5f75d66 AD |
3347 | while (s < d) { |
3348 | if (*s++ == '\n') { | |
3349 | incline(s); | |
3350 | if (strnEQ(s,"=cut",4)) { | |
3351 | s = strchr(s,'\n'); | |
3352 | if (s) | |
3353 | s++; | |
3354 | else | |
3355 | s = d; | |
3356 | incline(s); | |
3357 | goto retry; | |
3358 | } | |
3359 | } | |
3360 | } | |
3361 | goto retry; | |
3362 | } | |
3280af22 NIS |
3363 | s = PL_bufend; |
3364 | PL_doextract = TRUE; | |
a0d0e21e LW |
3365 | goto retry; |
3366 | } | |
3280af22 | 3367 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3368 | char *t; |
51882d45 | 3369 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3370 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3371 | #else |
bf4acbe4 | 3372 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3373 | #endif |
a0d0e21e LW |
3374 | if (*t == '\n' || *t == '#') { |
3375 | s--; | |
3280af22 | 3376 | PL_expect = XBLOCK; |
a0d0e21e LW |
3377 | goto leftbracket; |
3378 | } | |
79072805 | 3379 | } |
a0d0e21e LW |
3380 | yylval.ival = 0; |
3381 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3382 | case '!': |
3383 | s++; | |
3384 | tmp = *s++; | |
984200d0 | 3385 | if (tmp == '=') { |
decca21c YST |
3386 | /* was this !=~ where !~ was meant? |
3387 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
3388 | ||
984200d0 YST |
3389 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { |
3390 | char *t = s+1; | |
3391 | ||
3392 | while (t < PL_bufend && isSPACE(*t)) | |
3393 | ++t; | |
3394 | ||
decca21c YST |
3395 | if (*t == '/' || *t == '?' || |
3396 | ((*t == 'm' || *t == 's' || *t == 'y') && !isALNUM(t[1])) || | |
3397 | (*t == 't' && t[1] == 'r' && !isALNUM(t[2]))) | |
984200d0 YST |
3398 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
3399 | "!=~ should be !~"); | |
3400 | } | |
79072805 | 3401 | Eop(OP_NE); |
984200d0 | 3402 | } |
378cc40b | 3403 | if (tmp == '~') |
79072805 | 3404 | PMop(OP_NOT); |
378cc40b LW |
3405 | s--; |
3406 | OPERATOR('!'); | |
3407 | case '<': | |
3280af22 | 3408 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3409 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3410 | check_uni(); |
79072805 LW |
3411 | if (s[1] == '<') |
3412 | s = scan_heredoc(s); | |
3413 | else | |
3414 | s = scan_inputsymbol(s); | |
3415 | TERM(sublex_start()); | |
378cc40b LW |
3416 | } |
3417 | s++; | |
3418 | tmp = *s++; | |
3419 | if (tmp == '<') | |
79072805 | 3420 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3421 | if (tmp == '=') { |
3422 | tmp = *s++; | |
3423 | if (tmp == '>') | |
79072805 | 3424 | Eop(OP_NCMP); |
395c3793 | 3425 | s--; |
79072805 | 3426 | Rop(OP_LE); |
395c3793 | 3427 | } |
378cc40b | 3428 | s--; |
79072805 | 3429 | Rop(OP_LT); |
378cc40b LW |
3430 | case '>': |
3431 | s++; | |
3432 | tmp = *s++; | |
3433 | if (tmp == '>') | |
79072805 | 3434 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3435 | if (tmp == '=') |
79072805 | 3436 | Rop(OP_GE); |
378cc40b | 3437 | s--; |
79072805 | 3438 | Rop(OP_GT); |
378cc40b LW |
3439 | |
3440 | case '$': | |
bbce6d69 | 3441 | CLINE; |
3442 | ||
3280af22 NIS |
3443 | if (PL_expect == XOPERATOR) { |
3444 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3445 | PL_expect = XTERM; | |
a0d0e21e | 3446 | depcom(); |
bbce6d69 | 3447 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3448 | } |
8990e307 | 3449 | } |
a0d0e21e | 3450 | |
7e2040f0 | 3451 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3452 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3453 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3454 | sizeof PL_tokenbuf - 1, FALSE); | |
3455 | if (PL_expect == XOPERATOR) | |
3456 | no_op("Array length", s); | |
3280af22 | 3457 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3458 | PREREF(DOLSHARP); |
3280af22 NIS |
3459 | PL_expect = XOPERATOR; |
3460 | PL_pending_ident = '#'; | |
463ee0b2 | 3461 | TOKEN(DOLSHARP); |
79072805 | 3462 | } |
bbce6d69 | 3463 | |
3280af22 | 3464 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3465 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3466 | sizeof PL_tokenbuf - 1, FALSE); | |
3467 | if (PL_expect == XOPERATOR) | |
3468 | no_op("Scalar", s); | |
3280af22 NIS |
3469 | if (!PL_tokenbuf[1]) { |
3470 | if (s == PL_bufend) | |
bbce6d69 | 3471 | yyerror("Final $ should be \\$ or $name"); |
3472 | PREREF('$'); | |
8990e307 | 3473 | } |
a0d0e21e | 3474 | |
bbce6d69 | 3475 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3476 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3477 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3478 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3479 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3480 | TERM(THING); | |
3481 | } | |
3482 | ||
ff68c719 | 3483 | d = s; |
69d2bceb | 3484 | tmp = (I32)*s; |
3280af22 | 3485 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3486 | s = skipspace(s); |
3487 | ||
3280af22 | 3488 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3489 | char *t; |
3490 | if (*s == '[') { | |
3280af22 | 3491 | PL_tokenbuf[0] = '@'; |
599cee73 | 3492 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3493 | for(t = s + 1; |
7e2040f0 | 3494 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3495 | t++) ; |
a0d0e21e | 3496 | if (*t++ == ',') { |
3280af22 NIS |
3497 | PL_bufptr = skipspace(PL_bufptr); |
3498 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3499 | t++; |
9014280d | 3500 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 PM |
3501 | "Multidimensional syntax %.*s not supported", |
3502 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3503 | } |
3504 | } | |
bbce6d69 | 3505 | } |
3506 | else if (*s == '{') { | |
3280af22 | 3507 | PL_tokenbuf[0] = '%'; |
599cee73 | 3508 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3509 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3510 | { | |
3280af22 | 3511 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3512 | STRLEN len; |
3513 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3514 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3515 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3516 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3517 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
9014280d | 3518 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3519 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3520 | } |
93a17b20 LW |
3521 | } |
3522 | } | |
2f3197b3 | 3523 | } |
bbce6d69 | 3524 | |
3280af22 | 3525 | PL_expect = XOPERATOR; |
69d2bceb | 3526 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3527 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3528 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3529 | PL_expect = XOPERATOR; | |
bbce6d69 | 3530 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3531 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3532 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3533 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3534 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3535 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3536 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3537 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3538 | /* binary operators exclude handle interpretations */ |
3539 | switch (tmp) { | |
3540 | case -KEY_x: | |
3541 | case -KEY_eq: | |
3542 | case -KEY_ne: | |
3543 | case -KEY_gt: | |
3544 | case -KEY_lt: | |
3545 | case -KEY_ge: | |
3546 | case -KEY_le: | |
3547 | case -KEY_cmp: | |
3548 | break; | |
3549 | default: | |
3280af22 | 3550 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3551 | break; |
3552 | } | |
3553 | } | |
68dc0745 | 3554 | else { |
8a8635f0 | 3555 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3556 | } |
93a17b20 | 3557 | } |
bbce6d69 | 3558 | else if (isDIGIT(*s)) |
3280af22 | 3559 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3560 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3561 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
c963b151 BD |
3562 | else if (strchr("?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3563 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
7ce6e6b9 RGS |
3564 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' && s[1] != '/') |
3565 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
3566 | XXX except DORDOR operator */ | |
e0587a03 | 3567 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3568 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3569 | } |
3280af22 | 3570 | PL_pending_ident = '$'; |
79072805 | 3571 | TOKEN('$'); |
378cc40b LW |
3572 | |
3573 | case '@': | |
3280af22 | 3574 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3575 | no_op("Array", s); |
3280af22 NIS |
3576 | PL_tokenbuf[0] = '@'; |
3577 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3578 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3579 | PREREF('@'); |
3580 | } | |
3280af22 | 3581 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3582 | s = skipspace(s); |
3280af22 | 3583 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3584 | if (*s == '{') |
3280af22 | 3585 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3586 | |
3587 | /* Warn about @ where they meant $. */ | |
599cee73 | 3588 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3589 | if (*s == '[' || *s == '{') { |
3590 | char *t = s + 1; | |
7e2040f0 | 3591 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3592 | t++; |
3593 | if (*t == '}' || *t == ']') { | |
3594 | t++; | |
3280af22 | 3595 | PL_bufptr = skipspace(PL_bufptr); |
9014280d | 3596 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3597 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3598 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3599 | } |
93a17b20 LW |
3600 | } |
3601 | } | |
463ee0b2 | 3602 | } |
3280af22 | 3603 | PL_pending_ident = '@'; |
79072805 | 3604 | TERM('@'); |
378cc40b | 3605 | |
c963b151 | 3606 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 RGS |
3607 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
3608 | s += 2; | |
3609 | AOPERATOR(DORDOR); | |
3610 | } | |
c963b151 BD |
3611 | case '?': /* may either be conditional or pattern */ |
3612 | if(PL_expect == XOPERATOR) { | |
3613 | tmp = *s++; | |
3614 | if(tmp == '?') { | |
3615 | OPERATOR('?'); | |
3616 | } | |
3617 | else { | |
3618 | tmp = *s++; | |
3619 | if(tmp == '/') { | |
3620 | /* A // operator. */ | |
3621 | AOPERATOR(DORDOR); | |
3622 | } | |
3623 | else { | |
3624 | s--; | |
3625 | Mop(OP_DIVIDE); | |
3626 | } | |
3627 | } | |
3628 | } | |
3629 | else { | |
3630 | /* Disable warning on "study /blah/" */ | |
3631 | if (PL_oldoldbufptr == PL_last_uni | |
3632 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
3633 | || memNE(PL_last_uni, "study", 5) | |
3634 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
3635 | )) | |
3636 | check_uni(); | |
3637 | s = scan_pat(s,OP_MATCH); | |
3638 | TERM(sublex_start()); | |
3639 | } | |
378cc40b LW |
3640 | |
3641 | case '.': | |
51882d45 GS |
3642 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3643 | #ifdef PERL_STRICT_CR | |
3644 | && s[1] == '\n' | |
3645 | #else | |
3646 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3647 | #endif | |
3648 | && (s == PL_linestart || s[-1] == '\n') ) | |
3649 | { | |
3280af22 NIS |
3650 | PL_lex_formbrack = 0; |
3651 | PL_expect = XSTATE; | |
79072805 LW |
3652 | goto rightbracket; |
3653 | } | |
3280af22 | 3654 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3655 | tmp = *s++; |
a687059c LW |
3656 | if (*s == tmp) { |
3657 | s++; | |
2f3197b3 LW |
3658 | if (*s == tmp) { |
3659 | s++; | |
79072805 | 3660 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3661 | } |
3662 | else | |
79072805 | 3663 | yylval.ival = 0; |
378cc40b | 3664 | OPERATOR(DOTDOT); |
a687059c | 3665 | } |
3280af22 | 3666 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3667 | check_uni(); |
79072805 | 3668 | Aop(OP_CONCAT); |
378cc40b LW |
3669 | } |
3670 | /* FALL THROUGH */ | |
3671 | case '0': case '1': case '2': case '3': case '4': | |
3672 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3673 | s = scan_num(s, &yylval); |
4e553d73 | 3674 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3675 | "### Saw number in '%s'\n", s); |
5f80b19c | 3676 | } ); |
3280af22 | 3677 | if (PL_expect == XOPERATOR) |
8990e307 | 3678 | no_op("Number",s); |
79072805 LW |
3679 | TERM(THING); |
3680 | ||
3681 | case '\'': | |
09bef843 | 3682 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3683 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3684 | "### Saw string before '%s'\n", s); |
5f80b19c | 3685 | } ); |
3280af22 NIS |
3686 | if (PL_expect == XOPERATOR) { |
3687 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3688 | PL_expect = XTERM; | |
a0d0e21e LW |
3689 | depcom(); |
3690 | return ','; /* grandfather non-comma-format format */ | |
3691 | } | |
463ee0b2 | 3692 | else |
8990e307 | 3693 | no_op("String",s); |
463ee0b2 | 3694 | } |
79072805 | 3695 | if (!s) |
85e6fe83 | 3696 | missingterm((char*)0); |
79072805 LW |
3697 | yylval.ival = OP_CONST; |
3698 | TERM(sublex_start()); | |
3699 | ||
3700 | case '"': | |
09bef843 | 3701 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3702 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3703 | "### Saw string before '%s'\n", s); |
5f80b19c | 3704 | } ); |
3280af22 NIS |
3705 | if (PL_expect == XOPERATOR) { |
3706 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3707 | PL_expect = XTERM; | |
a0d0e21e LW |
3708 | depcom(); |
3709 | return ','; /* grandfather non-comma-format format */ | |
3710 | } | |
463ee0b2 | 3711 | else |
8990e307 | 3712 | no_op("String",s); |
463ee0b2 | 3713 | } |
79072805 | 3714 | if (!s) |
85e6fe83 | 3715 | missingterm((char*)0); |
4633a7c4 | 3716 | yylval.ival = OP_CONST; |
3280af22 | 3717 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3718 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3719 | yylval.ival = OP_STRINGIFY; |
3720 | break; | |
3721 | } | |
3722 | } | |
79072805 LW |
3723 | TERM(sublex_start()); |
3724 | ||
3725 | case '`': | |
09bef843 | 3726 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3727 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3728 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3729 | } ); |
3280af22 | 3730 | if (PL_expect == XOPERATOR) |
8990e307 | 3731 | no_op("Backticks",s); |
79072805 | 3732 | if (!s) |
85e6fe83 | 3733 | missingterm((char*)0); |
79072805 LW |
3734 | yylval.ival = OP_BACKTICK; |
3735 | set_csh(); | |
3736 | TERM(sublex_start()); | |
3737 | ||
3738 | case '\\': | |
3739 | s++; | |
599cee73 | 3740 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
9014280d | 3741 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", |
599cee73 | 3742 | *s, *s); |
3280af22 | 3743 | if (PL_expect == XOPERATOR) |
8990e307 | 3744 | no_op("Backslash",s); |
79072805 LW |
3745 | OPERATOR(REFGEN); |
3746 | ||
a7cb1f99 | 3747 | case 'v': |
e526c9e6 | 3748 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3749 | char *start = s; |
3750 | start++; | |
3751 | start++; | |
dd629d5b | 3752 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3753 | start++; |
3754 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3755 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3756 | TERM(THING); |
3757 | } | |
e526c9e6 | 3758 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
6f33ba73 RGS |
3759 | else if (!isALPHA(*start) && (PL_expect == XTERM |
3760 | || PL_expect == XREF || PL_expect == XSTATE | |
3761 | || PL_expect == XTERMORDORDOR)) { | |
e526c9e6 GS |
3762 | char c = *start; |
3763 | GV *gv; | |
3764 | *start = '\0'; | |
3765 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3766 | *start = c; | |
3767 | if (!gv) { | |
b73d6f50 | 3768 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3769 | TERM(THING); |
3770 | } | |
3771 | } | |
a7cb1f99 GS |
3772 | } |
3773 | goto keylookup; | |
79072805 | 3774 | case 'x': |
3280af22 | 3775 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3776 | s++; |
3777 | Mop(OP_REPEAT); | |
2f3197b3 | 3778 | } |
79072805 LW |
3779 | goto keylookup; |
3780 | ||
378cc40b | 3781 | case '_': |
79072805 LW |
3782 | case 'a': case 'A': |
3783 | case 'b': case 'B': | |
3784 | case 'c': case 'C': | |
3785 | case 'd': case 'D': | |
3786 | case 'e': case 'E': | |
3787 | case 'f': case 'F': | |
3788 | case 'g': case 'G': | |
3789 | case 'h': case 'H': | |
3790 | case 'i': case 'I': | |
3791 | case 'j': case 'J': | |
3792 | case 'k': case 'K': | |
3793 | case 'l': case 'L': | |
3794 | case 'm': case 'M': | |
3795 | case 'n': case 'N': | |
3796 | case 'o': case 'O': | |
3797 | case 'p': case 'P': | |
3798 | case 'q': case 'Q': | |
3799 | case 'r': case 'R': | |
3800 | case 's': case 'S': | |
3801 | case 't': case 'T': | |
3802 | case 'u': case 'U': | |
a7cb1f99 | 3803 | case 'V': |
79072805 LW |
3804 | case 'w': case 'W': |
3805 | case 'X': | |
3806 | case 'y': case 'Y': | |
3807 | case 'z': case 'Z': | |
3808 | ||
49dc05e3 | 3809 | keylookup: { |
1d239bbb | 3810 | orig_keyword = 0; |
161b471a NIS |
3811 | gv = Nullgv; |
3812 | gvp = 0; | |
49dc05e3 | 3813 | |
3280af22 NIS |
3814 | PL_bufptr = s; |
3815 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3816 | |
3817 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3818 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3819 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3820 | (PL_tokenbuf[0] == 'q' && | |
3821 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3822 | |
3823 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3824 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3825 | goto just_a_word; |
3826 | ||
3643fb5f | 3827 | d = s; |
3280af22 | 3828 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3829 | d++; /* no comments skipped here, or s### is misparsed */ |
3830 | ||
3831 | /* Is this a label? */ | |
3280af22 NIS |
3832 | if (!tmp && PL_expect == XSTATE |
3833 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3834 | s = d + 1; |
3280af22 | 3835 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3836 | CLINE; |
3837 | TOKEN(LABEL); | |
3643fb5f CS |
3838 | } |
3839 | ||
3840 | /* Check for keywords */ | |
3280af22 | 3841 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3842 | |
3843 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3844 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3845 | CLINE; |
3280af22 | 3846 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 3847 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 3848 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3849 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
3850 | TERM(WORD); |
3851 | } | |
3852 | ||
a0d0e21e | 3853 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3854 | GV *ogv = Nullgv; /* override (winner) */ |
3855 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3856 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3857 | CV *cv; |
3280af22 | 3858 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3859 | (cv = GvCVu(gv))) |
3860 | { | |
3861 | if (GvIMPORTED_CV(gv)) | |
3862 | ogv = gv; | |
3863 | else if (! CvMETHOD(cv)) | |
3864 | hgv = gv; | |
3865 | } | |
3866 | if (!ogv && | |
3280af22 NIS |
3867 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3868 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3869 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3870 | { | |
3871 | ogv = gv; | |
3872 | } | |
3873 | } | |
3874 | if (ogv) { | |
30fe34ed | 3875 | orig_keyword = tmp; |
56f7f34b | 3876 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
3877 | } |
3878 | else if (gv && !gvp | |
3879 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3880 | && GvCVu(gv) |
3280af22 | 3881 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3882 | { |
3883 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3884 | } |
56f7f34b CS |
3885 | else { /* no override */ |
3886 | tmp = -tmp; | |
ac206dc8 | 3887 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
9014280d | 3888 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
ac206dc8 RGS |
3889 | "dump() better written as CORE::dump()"); |
3890 | } | |
56f7f34b CS |
3891 | gv = Nullgv; |
3892 | gvp = 0; | |
4944e2f7 GS |
3893 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3894 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
9014280d | 3895 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 3896 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3897 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3898 | } |
a0d0e21e LW |
3899 | } |
3900 | ||
3901 | reserved_word: | |
3902 | switch (tmp) { | |
79072805 LW |
3903 | |
3904 | default: /* not a keyword */ | |
93a17b20 | 3905 | just_a_word: { |
96e4d5b1 | 3906 | SV *sv; |
ce29ac45 | 3907 | int pkgname = 0; |
3280af22 | 3908 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3909 | |
3910 | /* Get the rest if it looks like a package qualifier */ | |
3911 | ||
155aba94 | 3912 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3913 | STRLEN morelen; |
3280af22 | 3914 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3915 | TRUE, &morelen); |
3916 | if (!morelen) | |
cea2e8a9 | 3917 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3918 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3919 | len += morelen; |
ce29ac45 | 3920 | pkgname = 1; |
a0d0e21e | 3921 | } |
8990e307 | 3922 | |
3280af22 NIS |
3923 | if (PL_expect == XOPERATOR) { |
3924 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3925 | CopLINE_dec(PL_curcop); |
9014280d | 3926 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3927 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3928 | } |
3929 | else | |
54310121 | 3930 | no_op("Bareword",s); |
463ee0b2 | 3931 | } |
8990e307 | 3932 | |
c3e0f903 GS |
3933 | /* Look for a subroutine with this name in current package, |
3934 | unless name is "Foo::", in which case Foo is a bearword | |
3935 | (and a package name). */ | |
3936 | ||
3937 | if (len > 2 && | |
3280af22 | 3938 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3939 | { |
e476b1b5 | 3940 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
9014280d | 3941 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 3942 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3943 | PL_tokenbuf); |
c3e0f903 | 3944 | len -= 2; |
3280af22 | 3945 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3946 | gv = Nullgv; |
3947 | gvp = 0; | |
3948 | } | |
3949 | else { | |
3950 | len = 0; | |
3951 | if (!gv) | |
3280af22 | 3952 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3953 | } |
3954 | ||
3955 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3956 | |
49dc05e3 | 3957 | if (gvp) { |
79cb57f6 | 3958 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3959 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3960 | } |
3961 | else | |
3280af22 | 3962 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3963 | |
a0d0e21e LW |
3964 | /* Presume this is going to be a bareword of some sort. */ |
3965 | ||
3966 | CLINE; | |
49dc05e3 | 3967 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e | 3968 | yylval.opval->op_private = OPpCONST_BARE; |
8f8cf39c JH |
3969 | /* UTF-8 package name? */ |
3970 | if (UTF && !IN_BYTES && | |
3971 | is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
3972 | SvUTF8_on(sv); | |
a0d0e21e | 3973 | |
c3e0f903 GS |
3974 | /* And if "Foo::", then that's what it certainly is. */ |
3975 | ||
3976 | if (len) | |
3977 | goto safe_bareword; | |
3978 | ||
8990e307 LW |
3979 | /* See if it's the indirect object for a list operator. */ |
3980 | ||
3280af22 NIS |
3981 | if (PL_oldoldbufptr && |
3982 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3983 | (PL_oldoldbufptr == PL_last_lop |
3984 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3985 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3986 | (PL_expect == XREF || |
3987 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3988 | { |
748a9306 LW |
3989 | bool immediate_paren = *s == '('; |
3990 | ||
a0d0e21e LW |
3991 | /* (Now we can afford to cross potential line boundary.) */ |
3992 | s = skipspace(s); | |
3993 | ||
3994 | /* Two barewords in a row may indicate method call. */ | |
3995 | ||
7e2040f0 | 3996 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3997 | return tmp; |
3998 | ||
3999 | /* If not a declared subroutine, it's an indirect object. */ | |
4000 | /* (But it's an indir obj regardless for sort.) */ | |
4001 | ||
7948272d | 4002 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 4003 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 4004 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 4005 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 4006 | { |
3280af22 | 4007 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 4008 | goto bareword; |
93a17b20 LW |
4009 | } |
4010 | } | |
8990e307 | 4011 | |
3280af22 | 4012 | PL_expect = XOPERATOR; |
8990e307 | 4013 | s = skipspace(s); |
1c3923b3 GS |
4014 | |
4015 | /* Is this a word before a => operator? */ | |
ce29ac45 | 4016 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
4017 | CLINE; |
4018 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 4019 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4020 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
4021 | TERM(WORD); |
4022 | } | |
4023 | ||
4024 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 4025 | if (*s == '(') { |
79072805 | 4026 | CLINE; |
96e4d5b1 | 4027 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 4028 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 4029 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 4030 | s = d + 1; |
4031 | goto its_constant; | |
4032 | } | |
4033 | } | |
3280af22 NIS |
4034 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4035 | PL_expect = XOPERATOR; | |
93a17b20 | 4036 | force_next(WORD); |
c07a80fd | 4037 | yylval.ival = 0; |
463ee0b2 | 4038 | TOKEN('&'); |
79072805 | 4039 | } |
93a17b20 | 4040 | |
a0d0e21e | 4041 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 4042 | |
8ebc5c01 | 4043 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
4044 | PL_last_lop = PL_oldbufptr; |
4045 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 4046 | PREBLOCK(METHOD); |
463ee0b2 LW |
4047 | } |
4048 | ||
8990e307 LW |
4049 | /* If followed by a bareword, see if it looks like indir obj. */ |
4050 | ||
30fe34ed RGS |
4051 | if (!orig_keyword |
4052 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
4053 | && (tmp = intuit_method(s,gv))) | |
a0d0e21e | 4054 | return tmp; |
93a17b20 | 4055 | |
8990e307 LW |
4056 | /* Not a method, so call it a subroutine (if defined) */ |
4057 | ||
8ebc5c01 | 4058 | if (gv && GvCVu(gv)) { |
46fc3d4c | 4059 | CV* cv; |
0453d815 | 4060 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
9014280d | 4061 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4062 | "Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 4063 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 4064 | /* Check for a constant sub */ |
46fc3d4c | 4065 | cv = GvCV(gv); |
96e4d5b1 | 4066 | if ((sv = cv_const_sv(cv))) { |
4067 | its_constant: | |
4068 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4069 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4070 | yylval.opval->op_private = 0; | |
4071 | TOKEN(WORD); | |
89bfa8cd | 4072 | } |
4073 | ||
a5f75d66 AD |
4074 | /* Resolve to GV now. */ |
4075 | op_free(yylval.opval); | |
4076 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4077 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4078 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4079 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4080 | /* Is there a prototype? */ |
4081 | if (SvPOK(cv)) { | |
4082 | STRLEN len; | |
7a52d87a | 4083 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4084 | if (!len) |
4085 | TERM(FUNC0SUB); | |
7a52d87a | 4086 | if (strEQ(proto, "$")) |
4633a7c4 | 4087 | OPERATOR(UNIOPSUB); |
0f5d0394 AE |
4088 | while (*proto == ';') |
4089 | proto++; | |
7a52d87a | 4090 | if (*proto == '&' && *s == '{') { |
c99da370 JH |
4091 | sv_setpv(PL_subname, PL_curstash ? |
4092 | "__ANON__" : "__ANON__::__ANON__"); | |
4633a7c4 LW |
4093 | PREBLOCK(LSTOPSUB); |
4094 | } | |
a9ef352a | 4095 | } |
3280af22 NIS |
4096 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4097 | PL_expect = XTERM; | |
8990e307 LW |
4098 | force_next(WORD); |
4099 | TOKEN(NOAMP); | |
4100 | } | |
748a9306 | 4101 | |
8990e307 LW |
4102 | /* Call it a bare word */ |
4103 | ||
5603f27d GS |
4104 | if (PL_hints & HINT_STRICT_SUBS) |
4105 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4106 | else { | |
4107 | bareword: | |
4108 | if (ckWARN(WARN_RESERVED)) { | |
4109 | if (lastchar != '-') { | |
4110 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
238ae712 | 4111 | if (!*d && !gv_stashpv(PL_tokenbuf,FALSE)) |
9014280d | 4112 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
4113 | PL_tokenbuf); |
4114 | } | |
748a9306 LW |
4115 | } |
4116 | } | |
c3e0f903 GS |
4117 | |
4118 | safe_bareword: | |
f248d071 | 4119 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
9014280d | 4120 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4121 | "Operator or semicolon missing before %c%s", |
3280af22 | 4122 | lastchar, PL_tokenbuf); |
9014280d | 4123 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4124 | "Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
4125 | lastchar, lastchar); |
4126 | } | |
93a17b20 | 4127 | TOKEN(WORD); |
79072805 | 4128 | } |
79072805 | 4129 | |
68dc0745 | 4130 | case KEY___FILE__: |
46fc3d4c | 4131 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4132 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4133 | TERM(THING); |
4134 | ||
79072805 | 4135 | case KEY___LINE__: |
cf2093f6 | 4136 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4137 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4138 | TERM(THING); |
68dc0745 | 4139 | |
4140 | case KEY___PACKAGE__: | |
4141 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
4142 | (PL_curstash |
4143 | ? newSVsv(PL_curstname) | |
4144 | : &PL_sv_undef)); | |
79072805 | 4145 | TERM(THING); |
79072805 | 4146 | |
e50aee73 | 4147 | case KEY___DATA__: |
79072805 LW |
4148 | case KEY___END__: { |
4149 | GV *gv; | |
79072805 LW |
4150 | |
4151 | /*SUPPRESS 560*/ | |
3280af22 | 4152 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4153 | char *pname = "main"; |
3280af22 NIS |
4154 | if (PL_tokenbuf[2] == 'D') |
4155 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4156 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4157 | GvMULTI_on(gv); |
79072805 | 4158 | if (!GvIO(gv)) |
a0d0e21e | 4159 | GvIOp(gv) = newIO(); |
3280af22 | 4160 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4161 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4162 | { | |
3280af22 | 4163 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4164 | fcntl(fd,F_SETFD,fd >= 3); |
4165 | } | |
79072805 | 4166 | #endif |
fd049845 | 4167 | /* Mark this internal pseudo-handle as clean */ |
4168 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4169 | if (PL_preprocess) |
50952442 | 4170 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4171 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4172 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4173 | else |
50952442 | 4174 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4175 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4176 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4177 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4178 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4179 | if (PL_bufend-PL_bufptr > 2 |
4180 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4181 | { |
4182 | Off_t loc = 0; | |
50952442 | 4183 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4184 | loc = PerlIO_tell(PL_rsfp); |
4185 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4186 | } | |
2986a63f JH |
4187 | #ifdef NETWARE |
4188 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4189 | #else | |
c39cd008 | 4190 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4191 | #endif /* NETWARE */ |
1143fce0 JH |
4192 | #ifdef PERLIO_IS_STDIO /* really? */ |
4193 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4194 | /* XXX see note in do_binmode() */ |
4195 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4196 | # endif |
4197 | #endif | |
c39cd008 GS |
4198 | if (loc > 0) |
4199 | PerlIO_seek(PL_rsfp, loc, 0); | |
4200 | } | |
4201 | } | |
4202 | #endif | |
7948272d | 4203 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
4204 | if (!IN_BYTES) { |
4205 | if (UTF) | |
4206 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
4207 | else if (PL_encoding) { | |
4208 | SV *name; | |
4209 | dSP; | |
4210 | ENTER; | |
4211 | SAVETMPS; | |
4212 | PUSHMARK(sp); | |
4213 | EXTEND(SP, 1); | |
4214 | XPUSHs(PL_encoding); | |
4215 | PUTBACK; | |
4216 | call_method("name", G_SCALAR); | |
4217 | SPAGAIN; | |
4218 | name = POPs; | |
4219 | PUTBACK; | |
4220 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, | |
4221 | Perl_form(aTHX_ ":encoding(%"SVf")", | |
4222 | name)); | |
4223 | FREETMPS; | |
4224 | LEAVE; | |
4225 | } | |
4226 | } | |
7948272d | 4227 | #endif |
3280af22 | 4228 | PL_rsfp = Nullfp; |
79072805 LW |
4229 | } |
4230 | goto fake_eof; | |
e929a76b | 4231 | } |
de3bb511 | 4232 | |
8990e307 | 4233 | case KEY_AUTOLOAD: |
ed6116ce | 4234 | case KEY_DESTROY: |
79072805 | 4235 | case KEY_BEGIN: |
7d30b5c4 | 4236 | case KEY_CHECK: |
7d07dbc2 | 4237 | case KEY_INIT: |
7d30b5c4 | 4238 | case KEY_END: |
3280af22 NIS |
4239 | if (PL_expect == XSTATE) { |
4240 | s = PL_bufptr; | |
93a17b20 | 4241 | goto really_sub; |
79072805 LW |
4242 | } |
4243 | goto just_a_word; | |
4244 | ||
a0d0e21e LW |
4245 | case KEY_CORE: |
4246 | if (*s == ':' && s[1] == ':') { | |
4247 | s += 2; | |
748a9306 | 4248 | d = s; |
3280af22 | 4249 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4250 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4251 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4252 | if (tmp < 0) |
4253 | tmp = -tmp; | |
4254 | goto reserved_word; | |
4255 | } | |
4256 | goto just_a_word; | |
4257 | ||
463ee0b2 LW |
4258 | case KEY_abs: |
4259 | UNI(OP_ABS); | |
4260 | ||
79072805 LW |
4261 | case KEY_alarm: |
4262 | UNI(OP_ALARM); | |
4263 | ||
4264 | case KEY_accept: | |
a0d0e21e | 4265 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4266 | |
463ee0b2 LW |
4267 | case KEY_and: |
4268 | OPERATOR(ANDOP); | |
4269 | ||
79072805 | 4270 | case KEY_atan2: |
a0d0e21e | 4271 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4272 | |
79072805 | 4273 | case KEY_bind: |
a0d0e21e | 4274 | LOP(OP_BIND,XTERM); |
79072805 LW |
4275 | |
4276 | case KEY_binmode: | |
1c1fc3ea | 4277 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4278 | |
4279 | case KEY_bless: | |
a0d0e21e | 4280 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4281 | |
4282 | case KEY_chop: | |
4283 | UNI(OP_CHOP); | |
4284 | ||
4285 | case KEY_continue: | |
4286 | PREBLOCK(CONTINUE); | |
4287 | ||
4288 | case KEY_chdir: | |
85e6fe83 | 4289 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4290 | UNI(OP_CHDIR); |
4291 | ||
4292 | case KEY_close: | |
4293 | UNI(OP_CLOSE); | |
4294 | ||
4295 | case KEY_closedir: | |
4296 | UNI(OP_CLOSEDIR); | |
4297 | ||
4298 | case KEY_cmp: | |
4299 | Eop(OP_SCMP); | |
4300 | ||
4301 | case KEY_caller: | |
4302 | UNI(OP_CALLER); | |
4303 | ||
4304 | case KEY_crypt: | |
4305 | #ifdef FCRYPT | |
f4c556ac GS |
4306 | if (!PL_cryptseen) { |
4307 | PL_cryptseen = TRUE; | |
de3bb511 | 4308 | init_des(); |
f4c556ac | 4309 | } |
a687059c | 4310 | #endif |
a0d0e21e | 4311 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4312 | |
4313 | case KEY_chmod: | |
a0d0e21e | 4314 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4315 | |
4316 | case KEY_chown: | |
a0d0e21e | 4317 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4318 | |
4319 | case KEY_connect: | |
a0d0e21e | 4320 | LOP(OP_CONNECT,XTERM); |
79072805 | 4321 | |
463ee0b2 LW |
4322 | case KEY_chr: |
4323 | UNI(OP_CHR); | |
4324 | ||
79072805 LW |
4325 | case KEY_cos: |
4326 | UNI(OP_COS); | |
4327 | ||
4328 | case KEY_chroot: | |
4329 | UNI(OP_CHROOT); | |
4330 | ||
4331 | case KEY_do: | |
4332 | s = skipspace(s); | |
4333 | if (*s == '{') | |
a0d0e21e | 4334 | PRETERMBLOCK(DO); |
79072805 | 4335 | if (*s != '\'') |
89c5585f | 4336 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4337 | OPERATOR(DO); |
79072805 LW |
4338 | |
4339 | case KEY_die: | |
3280af22 | 4340 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4341 | LOP(OP_DIE,XTERM); |
79072805 LW |
4342 | |
4343 | case KEY_defined: | |
4344 | UNI(OP_DEFINED); | |
4345 | ||
4346 | case KEY_delete: | |
a0d0e21e | 4347 | UNI(OP_DELETE); |
79072805 LW |
4348 | |
4349 | case KEY_dbmopen: | |
a0d0e21e LW |
4350 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4351 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4352 | |
4353 | case KEY_dbmclose: | |
4354 | UNI(OP_DBMCLOSE); | |
4355 | ||
4356 | case KEY_dump: | |
a0d0e21e | 4357 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4358 | LOOPX(OP_DUMP); |
4359 | ||
4360 | case KEY_else: | |
4361 | PREBLOCK(ELSE); | |
4362 | ||
4363 | case KEY_elsif: | |
57843af0 | 4364 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4365 | OPERATOR(ELSIF); |
4366 | ||
4367 | case KEY_eq: | |
4368 | Eop(OP_SEQ); | |
4369 | ||
a0d0e21e LW |
4370 | case KEY_exists: |
4371 | UNI(OP_EXISTS); | |
4e553d73 | 4372 | |
79072805 LW |
4373 | case KEY_exit: |
4374 | UNI(OP_EXIT); | |
4375 | ||
4376 | case KEY_eval: | |
79072805 | 4377 | s = skipspace(s); |
3280af22 | 4378 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4379 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4380 | |
4381 | case KEY_eof: | |
4382 | UNI(OP_EOF); | |
4383 | ||
c963b151 BD |
4384 | case KEY_err: |
4385 | OPERATOR(DOROP); | |
4386 | ||
79072805 LW |
4387 | case KEY_exp: |
4388 | UNI(OP_EXP); | |
4389 | ||
4390 | case KEY_each: | |
4391 | UNI(OP_EACH); | |
4392 | ||
4393 | case KEY_exec: | |
4394 | set_csh(); | |
a0d0e21e | 4395 | LOP(OP_EXEC,XREF); |
79072805 LW |
4396 | |
4397 | case KEY_endhostent: | |
4398 | FUN0(OP_EHOSTENT); | |
4399 | ||
4400 | case KEY_endnetent: | |
4401 | FUN0(OP_ENETENT); | |
4402 | ||
4403 | case KEY_endservent: | |
4404 | FUN0(OP_ESERVENT); | |
4405 | ||
4406 | case KEY_endprotoent: | |
4407 | FUN0(OP_EPROTOENT); | |
4408 | ||
4409 | case KEY_endpwent: | |
4410 | FUN0(OP_EPWENT); | |
4411 | ||
4412 | case KEY_endgrent: | |
4413 | FUN0(OP_EGRENT); | |
4414 | ||
4415 | case KEY_for: | |
4416 | case KEY_foreach: | |
57843af0 | 4417 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4418 | s = skipspace(s); |
7e2040f0 | 4419 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4420 | char *p = s; |
3280af22 | 4421 | if ((PL_bufend - p) >= 3 && |
55497cff | 4422 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4423 | p += 2; | |
77ca0c92 LW |
4424 | else if ((PL_bufend - p) >= 4 && |
4425 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4426 | p += 3; | |
55497cff | 4427 | p = skipspace(p); |
7e2040f0 | 4428 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4429 | p = scan_ident(p, PL_bufend, |
4430 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4431 | p = skipspace(p); | |
4432 | } | |
4433 | if (*p != '$') | |
cea2e8a9 | 4434 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4435 | } |
79072805 LW |
4436 | OPERATOR(FOR); |
4437 | ||
4438 | case KEY_formline: | |
a0d0e21e | 4439 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4440 | |
4441 | case KEY_fork: | |
4442 | FUN0(OP_FORK); | |
4443 | ||
4444 | case KEY_fcntl: | |
a0d0e21e | 4445 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4446 | |
4447 | case KEY_fileno: | |
4448 | UNI(OP_FILENO); | |
4449 | ||
4450 | case KEY_flock: | |
a0d0e21e | 4451 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4452 | |
4453 | case KEY_gt: | |
4454 | Rop(OP_SGT); | |
4455 | ||
4456 | case KEY_ge: | |
4457 | Rop(OP_SGE); | |
4458 | ||
4459 | case KEY_grep: | |
2c38e13d | 4460 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4461 | |
4462 | case KEY_goto: | |
a0d0e21e | 4463 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4464 | LOOPX(OP_GOTO); |
4465 | ||
4466 | case KEY_gmtime: | |
4467 | UNI(OP_GMTIME); | |
4468 | ||
4469 | case KEY_getc: | |
6f33ba73 | 4470 | UNIDOR(OP_GETC); |
79072805 LW |
4471 | |
4472 | case KEY_getppid: | |
4473 | FUN0(OP_GETPPID); | |
4474 | ||
4475 | case KEY_getpgrp: | |
4476 | UNI(OP_GETPGRP); | |
4477 | ||
4478 | case KEY_getpriority: | |
a0d0e21e | 4479 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4480 | |
4481 | case KEY_getprotobyname: | |
4482 | UNI(OP_GPBYNAME); | |
4483 | ||
4484 | case KEY_getprotobynumber: | |
a0d0e21e | 4485 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4486 | |
4487 | case KEY_getprotoent: | |
4488 | FUN0(OP_GPROTOENT); | |
4489 | ||
4490 | case KEY_getpwent: | |
4491 | FUN0(OP_GPWENT); | |
4492 | ||
4493 | case KEY_getpwnam: | |
ff68c719 | 4494 | UNI(OP_GPWNAM); |
79072805 LW |
4495 | |
4496 | case KEY_getpwuid: | |
ff68c719 | 4497 | UNI(OP_GPWUID); |
79072805 LW |
4498 | |
4499 | case KEY_getpeername: | |
4500 | UNI(OP_GETPEERNAME); | |
4501 | ||
4502 | case KEY_gethostbyname: | |
4503 | UNI(OP_GHBYNAME); | |
4504 | ||
4505 | case KEY_gethostbyaddr: | |
a0d0e21e | 4506 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4507 | |
4508 | case KEY_gethostent: | |
4509 | FUN0(OP_GHOSTENT); | |
4510 | ||
4511 | case KEY_getnetbyname: | |
4512 | UNI(OP_GNBYNAME); | |
4513 | ||
4514 | case KEY_getnetbyaddr: | |
a0d0e21e | 4515 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4516 | |
4517 | case KEY_getnetent: | |
4518 | FUN0(OP_GNETENT); | |
4519 | ||
4520 | case KEY_getservbyname: | |
a0d0e21e | 4521 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4522 | |
4523 | case KEY_getservbyport: | |
a0d0e21e | 4524 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4525 | |
4526 | case KEY_getservent: | |
4527 | FUN0(OP_GSERVENT); | |
4528 | ||
4529 | case KEY_getsockname: | |
4530 | UNI(OP_GETSOCKNAME); | |
4531 | ||
4532 | case KEY_getsockopt: | |
a0d0e21e | 4533 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4534 | |
4535 | case KEY_getgrent: | |
4536 | FUN0(OP_GGRENT); | |
4537 | ||
4538 | case KEY_getgrnam: | |
ff68c719 | 4539 | UNI(OP_GGRNAM); |
79072805 LW |
4540 | |
4541 | case KEY_getgrgid: | |
ff68c719 | 4542 | UNI(OP_GGRGID); |
79072805 LW |
4543 | |
4544 | case KEY_getlogin: | |
4545 | FUN0(OP_GETLOGIN); | |
4546 | ||
93a17b20 | 4547 | case KEY_glob: |
a0d0e21e LW |
4548 | set_csh(); |
4549 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4550 | |
79072805 LW |
4551 | case KEY_hex: |
4552 | UNI(OP_HEX); | |
4553 | ||
4554 | case KEY_if: | |
57843af0 | 4555 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4556 | OPERATOR(IF); |
4557 | ||
4558 | case KEY_index: | |
a0d0e21e | 4559 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4560 | |
4561 | case KEY_int: | |
4562 | UNI(OP_INT); | |
4563 | ||
4564 | case KEY_ioctl: | |
a0d0e21e | 4565 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4566 | |
4567 | case KEY_join: | |
a0d0e21e | 4568 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4569 | |
4570 | case KEY_keys: | |
4571 | UNI(OP_KEYS); | |
4572 | ||
4573 | case KEY_kill: | |
a0d0e21e | 4574 | LOP(OP_KILL,XTERM); |
79072805 LW |
4575 | |
4576 | case KEY_last: | |
a0d0e21e | 4577 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4578 | LOOPX(OP_LAST); |
4e553d73 | 4579 | |
79072805 LW |
4580 | case KEY_lc: |
4581 | UNI(OP_LC); | |
4582 | ||
4583 | case KEY_lcfirst: | |
4584 | UNI(OP_LCFIRST); | |
4585 | ||
4586 | case KEY_local: | |
09bef843 | 4587 | yylval.ival = 0; |
79072805 LW |
4588 | OPERATOR(LOCAL); |
4589 | ||
4590 | case KEY_length: | |
4591 | UNI(OP_LENGTH); | |
4592 | ||
4593 | case KEY_lt: | |
4594 | Rop(OP_SLT); | |
4595 | ||
4596 | case KEY_le: | |
4597 | Rop(OP_SLE); | |
4598 | ||
4599 | case KEY_localtime: | |
4600 | UNI(OP_LOCALTIME); | |
4601 | ||
4602 | case KEY_log: | |
4603 | UNI(OP_LOG); | |
4604 | ||
4605 | case KEY_link: | |
a0d0e21e | 4606 | LOP(OP_LINK,XTERM); |
79072805 LW |
4607 | |
4608 | case KEY_listen: | |
a0d0e21e | 4609 | LOP(OP_LISTEN,XTERM); |
79072805 | 4610 | |
c0329465 MB |
4611 | case KEY_lock: |
4612 | UNI(OP_LOCK); | |
4613 | ||
79072805 LW |
4614 | case KEY_lstat: |
4615 | UNI(OP_LSTAT); | |
4616 | ||
4617 | case KEY_m: | |
8782bef2 | 4618 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4619 | TERM(sublex_start()); |
4620 | ||
a0d0e21e | 4621 | case KEY_map: |
2c38e13d | 4622 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4623 | |
79072805 | 4624 | case KEY_mkdir: |
a0d0e21e | 4625 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4626 | |
4627 | case KEY_msgctl: | |
a0d0e21e | 4628 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4629 | |
4630 | case KEY_msgget: | |
a0d0e21e | 4631 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4632 | |
4633 | case KEY_msgrcv: | |
a0d0e21e | 4634 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4635 | |
4636 | case KEY_msgsnd: | |
a0d0e21e | 4637 | LOP(OP_MSGSND,XTERM); |
79072805 | 4638 | |
77ca0c92 | 4639 | case KEY_our: |
93a17b20 | 4640 | case KEY_my: |
77ca0c92 | 4641 | PL_in_my = tmp; |
c750a3ec | 4642 | s = skipspace(s); |
7e2040f0 | 4643 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4644 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4645 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4646 | goto really_sub; | |
def3634b | 4647 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4648 | if (!PL_in_my_stash) { |
c750a3ec | 4649 | char tmpbuf[1024]; |
3280af22 NIS |
4650 | PL_bufptr = s; |
4651 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4652 | yyerror(tmpbuf); |
4653 | } | |
4654 | } | |
09bef843 | 4655 | yylval.ival = 1; |
55497cff | 4656 | OPERATOR(MY); |
93a17b20 | 4657 | |
79072805 | 4658 | case KEY_next: |
a0d0e21e | 4659 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4660 | LOOPX(OP_NEXT); |
4661 | ||
4662 | case KEY_ne: | |
4663 | Eop(OP_SNE); | |
4664 | ||
a0d0e21e | 4665 | case KEY_no: |
3280af22 | 4666 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4667 | yyerror("\"no\" not allowed in expression"); |
4668 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4669 | s = force_version(s, FALSE); |
a0d0e21e LW |
4670 | yylval.ival = 0; |
4671 | OPERATOR(USE); | |
4672 | ||
4673 | case KEY_not: | |
2d2e263d LW |
4674 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4675 | FUN1(OP_NOT); | |
4676 | else | |
4677 | OPERATOR(NOTOP); | |
a0d0e21e | 4678 | |
79072805 | 4679 | case KEY_open: |
93a17b20 | 4680 | s = skipspace(s); |
7e2040f0 | 4681 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4682 | char *t; |
7e2040f0 | 4683 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
e2ab214b DM |
4684 | for (t=d; *t && isSPACE(*t); t++) ; |
4685 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) | |
66fbe8fb HS |
4686 | /* [perl #16184] */ |
4687 | && !(t[0] == '=' && t[1] == '>') | |
4688 | ) { | |
9014280d | 4689 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 | 4690 | "Precedence problem: open %.*s should be open(%.*s)", |
66fbe8fb HS |
4691 | d - s, s, d - s, s); |
4692 | } | |
93a17b20 | 4693 | } |
a0d0e21e | 4694 | LOP(OP_OPEN,XTERM); |
79072805 | 4695 | |
463ee0b2 | 4696 | case KEY_or: |
a0d0e21e | 4697 | yylval.ival = OP_OR; |
463ee0b2 LW |
4698 | OPERATOR(OROP); |
4699 | ||
79072805 LW |
4700 | case KEY_ord: |
4701 | UNI(OP_ORD); | |
4702 | ||
4703 | case KEY_oct: | |
4704 | UNI(OP_OCT); | |
4705 | ||
4706 | case KEY_opendir: | |
a0d0e21e | 4707 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4708 | |
4709 | case KEY_print: | |
3280af22 | 4710 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4711 | LOP(OP_PRINT,XREF); |
79072805 LW |
4712 | |
4713 | case KEY_printf: | |
3280af22 | 4714 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4715 | LOP(OP_PRTF,XREF); |
79072805 | 4716 | |
c07a80fd | 4717 | case KEY_prototype: |
4718 | UNI(OP_PROTOTYPE); | |
4719 | ||
79072805 | 4720 | case KEY_push: |
a0d0e21e | 4721 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4722 | |
4723 | case KEY_pop: | |
6f33ba73 | 4724 | UNIDOR(OP_POP); |
79072805 | 4725 | |
a0d0e21e | 4726 | case KEY_pos: |
6f33ba73 | 4727 | UNIDOR(OP_POS); |
4e553d73 | 4728 | |
79072805 | 4729 | case KEY_pack: |
a0d0e21e | 4730 | LOP(OP_PACK,XTERM); |
79072805 LW |
4731 | |
4732 | case KEY_package: | |
a0d0e21e | 4733 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4734 | OPERATOR(PACKAGE); |
4735 | ||
4736 | case KEY_pipe: | |
a0d0e21e | 4737 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4738 | |
4739 | case KEY_q: | |
09bef843 | 4740 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4741 | if (!s) |
85e6fe83 | 4742 | missingterm((char*)0); |
79072805 LW |
4743 | yylval.ival = OP_CONST; |
4744 | TERM(sublex_start()); | |
4745 | ||
a0d0e21e LW |
4746 | case KEY_quotemeta: |
4747 | UNI(OP_QUOTEMETA); | |
4748 | ||
8990e307 | 4749 | case KEY_qw: |
09bef843 | 4750 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4751 | if (!s) |
85e6fe83 | 4752 | missingterm((char*)0); |
8127e0e3 GS |
4753 | force_next(')'); |
4754 | if (SvCUR(PL_lex_stuff)) { | |
4755 | OP *words = Nullop; | |
4756 | int warned = 0; | |
3280af22 | 4757 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4758 | while (len) { |
7948272d | 4759 | SV *sv; |
8127e0e3 GS |
4760 | for (; isSPACE(*d) && len; --len, ++d) ; |
4761 | if (len) { | |
4762 | char *b = d; | |
e476b1b5 | 4763 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4764 | for (; !isSPACE(*d) && len; --len, ++d) { |
4765 | if (*d == ',') { | |
9014280d | 4766 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4767 | "Possible attempt to separate words with commas"); |
4768 | ++warned; | |
4769 | } | |
4770 | else if (*d == '#') { | |
9014280d | 4771 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4772 | "Possible attempt to put comments in qw() list"); |
4773 | ++warned; | |
4774 | } | |
4775 | } | |
4776 | } | |
4777 | else { | |
4778 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4779 | } | |
7948272d NIS |
4780 | sv = newSVpvn(b, d-b); |
4781 | if (DO_UTF8(PL_lex_stuff)) | |
4782 | SvUTF8_on(sv); | |
8127e0e3 | 4783 | words = append_elem(OP_LIST, words, |
7948272d | 4784 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4785 | } |
4786 | } | |
8127e0e3 GS |
4787 | if (words) { |
4788 | PL_nextval[PL_nexttoke].opval = words; | |
4789 | force_next(THING); | |
4790 | } | |
55497cff | 4791 | } |
37fd879b | 4792 | if (PL_lex_stuff) { |
8127e0e3 | 4793 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4794 | PL_lex_stuff = Nullsv; |
4795 | } | |
3280af22 | 4796 | PL_expect = XTERM; |
8127e0e3 | 4797 | TOKEN('('); |
8990e307 | 4798 | |
79072805 | 4799 | case KEY_qq: |
09bef843 | 4800 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4801 | if (!s) |
85e6fe83 | 4802 | missingterm((char*)0); |
a0d0e21e | 4803 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4804 | if (SvIVX(PL_lex_stuff) == '\'') |
4805 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4806 | TERM(sublex_start()); |
4807 | ||
8782bef2 GB |
4808 | case KEY_qr: |
4809 | s = scan_pat(s,OP_QR); | |
4810 | TERM(sublex_start()); | |
4811 | ||
79072805 | 4812 | case KEY_qx: |
09bef843 | 4813 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4814 | if (!s) |
85e6fe83 | 4815 | missingterm((char*)0); |
79072805 LW |
4816 | yylval.ival = OP_BACKTICK; |
4817 | set_csh(); | |
4818 | TERM(sublex_start()); | |
4819 | ||
4820 | case KEY_return: | |
4821 | OLDLOP(OP_RETURN); | |
4822 | ||
4823 | case KEY_require: | |
a7cb1f99 | 4824 | s = skipspace(s); |
e759cc13 RGS |
4825 | if (isDIGIT(*s)) { |
4826 | s = force_version(s, FALSE); | |
a7cb1f99 | 4827 | } |
e759cc13 RGS |
4828 | else if (*s != 'v' || !isDIGIT(s[1]) |
4829 | || (s = force_version(s, TRUE), *s == 'v')) | |
4830 | { | |
a7cb1f99 GS |
4831 | *PL_tokenbuf = '\0'; |
4832 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4833 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4834 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4835 | else if (*s == '<') | |
4836 | yyerror("<> should be quotes"); | |
4837 | } | |
463ee0b2 | 4838 | UNI(OP_REQUIRE); |
79072805 LW |
4839 | |
4840 | case KEY_reset: | |
4841 | UNI(OP_RESET); | |
4842 | ||
4843 | case KEY_redo: | |
a0d0e21e | 4844 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4845 | LOOPX(OP_REDO); |
4846 | ||
4847 | case KEY_rename: | |
a0d0e21e | 4848 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4849 | |
4850 | case KEY_rand: | |
4851 | UNI(OP_RAND); | |
4852 | ||
4853 | case KEY_rmdir: | |
4854 | UNI(OP_RMDIR); | |
4855 | ||
4856 | case KEY_rindex: | |
a0d0e21e | 4857 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4858 | |
4859 | case KEY_read: | |
a0d0e21e | 4860 | LOP(OP_READ,XTERM); |
79072805 LW |
4861 | |
4862 | case KEY_readdir: | |
4863 | UNI(OP_READDIR); | |
4864 | ||
93a17b20 LW |
4865 | case KEY_readline: |
4866 | set_csh(); | |
6f33ba73 | 4867 | UNIDOR(OP_READLINE); |
93a17b20 LW |
4868 | |
4869 | case KEY_readpipe: | |
4870 | set_csh(); | |
4871 | UNI(OP_BACKTICK); | |
4872 | ||
79072805 LW |
4873 | case KEY_rewinddir: |
4874 | UNI(OP_REWINDDIR); | |
4875 | ||
4876 | case KEY_recv: | |
a0d0e21e | 4877 | LOP(OP_RECV,XTERM); |
79072805 LW |
4878 | |
4879 | case KEY_reverse: | |
a0d0e21e | 4880 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4881 | |
4882 | case KEY_readlink: | |
6f33ba73 | 4883 | UNIDOR(OP_READLINK); |
79072805 LW |
4884 | |
4885 | case KEY_ref: | |
4886 | UNI(OP_REF); | |
4887 | ||
4888 | case KEY_s: | |
4889 | s = scan_subst(s); | |
4890 | if (yylval.opval) | |
4891 | TERM(sublex_start()); | |
4892 | else | |
4893 | TOKEN(1); /* force error */ | |
4894 | ||
a0d0e21e LW |
4895 | case KEY_chomp: |
4896 | UNI(OP_CHOMP); | |
4e553d73 | 4897 | |
79072805 LW |
4898 | case KEY_scalar: |
4899 | UNI(OP_SCALAR); | |
4900 | ||
4901 | case KEY_select: | |
a0d0e21e | 4902 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4903 | |
4904 | case KEY_seek: | |
a0d0e21e | 4905 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4906 | |
4907 | case KEY_semctl: | |
a0d0e21e | 4908 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4909 | |
4910 | case KEY_semget: | |
a0d0e21e | 4911 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4912 | |
4913 | case KEY_semop: | |
a0d0e21e | 4914 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4915 | |
4916 | case KEY_send: | |
a0d0e21e | 4917 | LOP(OP_SEND,XTERM); |
79072805 LW |
4918 | |
4919 | case KEY_setpgrp: | |
a0d0e21e | 4920 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4921 | |
4922 | case KEY_setpriority: | |
a0d0e21e | 4923 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4924 | |
4925 | case KEY_sethostent: | |
ff68c719 | 4926 | UNI(OP_SHOSTENT); |
79072805 LW |
4927 | |
4928 | case KEY_setnetent: | |
ff68c719 | 4929 | UNI(OP_SNETENT); |
79072805 LW |
4930 | |
4931 | case KEY_setservent: | |
ff68c719 | 4932 | UNI(OP_SSERVENT); |
79072805 LW |
4933 | |
4934 | case KEY_setprotoent: | |
ff68c719 | 4935 | UNI(OP_SPROTOENT); |
79072805 LW |
4936 | |
4937 | case KEY_setpwent: | |
4938 | FUN0(OP_SPWENT); | |
4939 | ||
4940 | case KEY_setgrent: | |
4941 | FUN0(OP_SGRENT); | |
4942 | ||
4943 | case KEY_seekdir: | |
a0d0e21e | 4944 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4945 | |
4946 | case KEY_setsockopt: | |
a0d0e21e | 4947 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4948 | |
4949 | case KEY_shift: | |
6f33ba73 | 4950 | UNIDOR(OP_SHIFT); |
79072805 LW |
4951 | |
4952 | case KEY_shmctl: | |
a0d0e21e | 4953 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4954 | |
4955 | case KEY_shmget: | |
a0d0e21e | 4956 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4957 | |
4958 | case KEY_shmread: | |
a0d0e21e | 4959 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4960 | |
4961 | case KEY_shmwrite: | |
a0d0e21e | 4962 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4963 | |
4964 | case KEY_shutdown: | |
a0d0e21e | 4965 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4966 | |
4967 | case KEY_sin: | |
4968 | UNI(OP_SIN); | |
4969 | ||
4970 | case KEY_sleep: | |
4971 | UNI(OP_SLEEP); | |
4972 | ||
4973 | case KEY_socket: | |
a0d0e21e | 4974 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4975 | |
4976 | case KEY_socketpair: | |
a0d0e21e | 4977 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4978 | |
4979 | case KEY_sort: | |
3280af22 | 4980 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4981 | s = skipspace(s); |
4982 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4983 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4984 | PL_expect = XTERM; |
15f0808c | 4985 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4986 | LOP(OP_SORT,XREF); |
79072805 LW |
4987 | |
4988 | case KEY_split: | |
a0d0e21e | 4989 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4990 | |
4991 | case KEY_sprintf: | |
a0d0e21e | 4992 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4993 | |
4994 | case KEY_splice: | |
a0d0e21e | 4995 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4996 | |
4997 | case KEY_sqrt: | |
4998 | UNI(OP_SQRT); | |
4999 | ||
5000 | case KEY_srand: | |
5001 | UNI(OP_SRAND); | |
5002 | ||
5003 | case KEY_stat: | |
5004 | UNI(OP_STAT); | |
5005 | ||
5006 | case KEY_study: | |
79072805 LW |
5007 | UNI(OP_STUDY); |
5008 | ||
5009 | case KEY_substr: | |
a0d0e21e | 5010 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
5011 | |
5012 | case KEY_format: | |
5013 | case KEY_sub: | |
93a17b20 | 5014 | really_sub: |
09bef843 | 5015 | { |
3280af22 | 5016 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 5017 | SSize_t tboffset = 0; |
09bef843 | 5018 | expectation attrful; |
d731386a | 5019 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
5020 | int key = tmp; |
5021 | ||
5022 | s = skipspace(s); | |
5023 | ||
7e2040f0 | 5024 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
5025 | (*s == ':' && s[1] == ':')) |
5026 | { | |
5027 | PL_expect = XBLOCK; | |
5028 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
5029 | /* remember buffer pos'n for later force_word */ |
5030 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
5031 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
5032 | if (strchr(tmpbuf, ':')) | |
5033 | sv_setpv(PL_subname, tmpbuf); | |
5034 | else { | |
5035 | sv_setsv(PL_subname,PL_curstname); | |
5036 | sv_catpvn(PL_subname,"::",2); | |
5037 | sv_catpvn(PL_subname,tmpbuf,len); | |
5038 | } | |
5039 | s = skipspace(d); | |
5040 | have_name = TRUE; | |
5041 | } | |
463ee0b2 | 5042 | else { |
09bef843 SB |
5043 | if (key == KEY_my) |
5044 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
5045 | PL_expect = XTERMBLOCK; | |
5046 | attrful = XATTRTERM; | |
5047 | sv_setpv(PL_subname,"?"); | |
5048 | have_name = FALSE; | |
463ee0b2 | 5049 | } |
4633a7c4 | 5050 | |
09bef843 SB |
5051 | if (key == KEY_format) { |
5052 | if (*s == '=') | |
5053 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5054 | if (have_name) | |
b1b65b59 JH |
5055 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5056 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5057 | OPERATOR(FORMAT); |
5058 | } | |
79072805 | 5059 | |
09bef843 SB |
5060 | /* Look for a prototype */ |
5061 | if (*s == '(') { | |
5062 | char *p; | |
5063 | ||
5064 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 5065 | if (!s) |
09bef843 | 5066 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 5067 | /* strip spaces and check for bad characters */ |
09bef843 SB |
5068 | d = SvPVX(PL_lex_stuff); |
5069 | tmp = 0; | |
d731386a | 5070 | bad_proto = FALSE; |
09bef843 | 5071 | for (p = d; *p; ++p) { |
d37a9538 | 5072 | if (!isSPACE(*p)) { |
09bef843 | 5073 | d[tmp++] = *p; |
d37a9538 ST |
5074 | if (!strchr("$@%*;[]&\\", *p)) |
5075 | bad_proto = TRUE; | |
5076 | } | |
09bef843 SB |
5077 | } |
5078 | d[tmp] = '\0'; | |
420cdfc1 | 5079 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
9014280d | 5080 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d NC |
5081 | "Illegal character in prototype for %"SVf" : %s", |
5082 | PL_subname, d); | |
09bef843 SB |
5083 | SvCUR(PL_lex_stuff) = tmp; |
5084 | have_proto = TRUE; | |
68dc0745 | 5085 | |
09bef843 | 5086 | s = skipspace(s); |
4633a7c4 | 5087 | } |
09bef843 SB |
5088 | else |
5089 | have_proto = FALSE; | |
5090 | ||
5091 | if (*s == ':' && s[1] != ':') | |
5092 | PL_expect = attrful; | |
904d85c5 RGS |
5093 | else if (!have_name && *s != '{' && key == KEY_sub) |
5094 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
09bef843 SB |
5095 | |
5096 | if (have_proto) { | |
b1b65b59 JH |
5097 | PL_nextval[PL_nexttoke].opval = |
5098 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5099 | PL_lex_stuff = Nullsv; |
5100 | force_next(THING); | |
68dc0745 | 5101 | } |
09bef843 | 5102 | if (!have_name) { |
c99da370 JH |
5103 | sv_setpv(PL_subname, |
5104 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__"); | |
09bef843 | 5105 | TOKEN(ANONSUB); |
4633a7c4 | 5106 | } |
b1b65b59 JH |
5107 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5108 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5109 | if (key == KEY_my) |
5110 | TOKEN(MYSUB); | |
5111 | TOKEN(SUB); | |
4633a7c4 | 5112 | } |
79072805 LW |
5113 | |
5114 | case KEY_system: | |
5115 | set_csh(); | |
a0d0e21e | 5116 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5117 | |
5118 | case KEY_symlink: | |
a0d0e21e | 5119 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5120 | |
5121 | case KEY_syscall: | |
a0d0e21e | 5122 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5123 | |
c07a80fd | 5124 | case KEY_sysopen: |
5125 | LOP(OP_SYSOPEN,XTERM); | |
5126 | ||
137443ea | 5127 | case KEY_sysseek: |
5128 | LOP(OP_SYSSEEK,XTERM); | |
5129 | ||
79072805 | 5130 | case KEY_sysread: |
a0d0e21e | 5131 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5132 | |
5133 | case KEY_syswrite: | |
a0d0e21e | 5134 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5135 | |
5136 | case KEY_tr: | |
5137 | s = scan_trans(s); | |
5138 | TERM(sublex_start()); | |
5139 | ||
5140 | case KEY_tell: | |
5141 | UNI(OP_TELL); | |
5142 | ||
5143 | case KEY_telldir: | |
5144 | UNI(OP_TELLDIR); | |
5145 | ||
463ee0b2 | 5146 | case KEY_tie: |
a0d0e21e | 5147 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5148 | |
c07a80fd | 5149 | case KEY_tied: |
5150 | UNI(OP_TIED); | |
5151 | ||
79072805 LW |
5152 | case KEY_time: |
5153 | FUN0(OP_TIME); | |
5154 | ||
5155 | case KEY_times: | |
5156 | FUN0(OP_TMS); | |
5157 | ||
5158 | case KEY_truncate: | |
a0d0e21e | 5159 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5160 | |
5161 | case KEY_uc: | |
5162 | UNI(OP_UC); | |
5163 | ||
5164 | case KEY_ucfirst: | |
5165 | UNI(OP_UCFIRST); | |
5166 | ||
463ee0b2 LW |
5167 | case KEY_untie: |
5168 | UNI(OP_UNTIE); | |
5169 | ||
79072805 | 5170 | case KEY_until: |
57843af0 | 5171 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5172 | OPERATOR(UNTIL); |
5173 | ||
5174 | case KEY_unless: | |
57843af0 | 5175 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5176 | OPERATOR(UNLESS); |
5177 | ||
5178 | case KEY_unlink: | |
a0d0e21e | 5179 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5180 | |
5181 | case KEY_undef: | |
6f33ba73 | 5182 | UNIDOR(OP_UNDEF); |
79072805 LW |
5183 | |
5184 | case KEY_unpack: | |
a0d0e21e | 5185 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5186 | |
5187 | case KEY_utime: | |
a0d0e21e | 5188 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5189 | |
5190 | case KEY_umask: | |
6f33ba73 | 5191 | UNIDOR(OP_UMASK); |
79072805 LW |
5192 | |
5193 | case KEY_unshift: | |
a0d0e21e LW |
5194 | LOP(OP_UNSHIFT,XTERM); |
5195 | ||
5196 | case KEY_use: | |
3280af22 | 5197 | if (PL_expect != XSTATE) |
a0d0e21e | 5198 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5199 | s = skipspace(s); |
a7cb1f99 | 5200 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5201 | s = force_version(s, TRUE); |
a7cb1f99 | 5202 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5203 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5204 | force_next(WORD); |
5205 | } | |
e759cc13 RGS |
5206 | else if (*s == 'v') { |
5207 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5208 | s = force_version(s, FALSE); | |
5209 | } | |
89bfa8cd | 5210 | } |
5211 | else { | |
5212 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5213 | s = force_version(s, FALSE); |
89bfa8cd | 5214 | } |
a0d0e21e LW |
5215 | yylval.ival = 1; |
5216 | OPERATOR(USE); | |
79072805 LW |
5217 | |
5218 | case KEY_values: | |
5219 | UNI(OP_VALUES); | |
5220 | ||
5221 | case KEY_vec: | |
a0d0e21e | 5222 | LOP(OP_VEC,XTERM); |
79072805 LW |
5223 | |
5224 | case KEY_while: | |
57843af0 | 5225 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5226 | OPERATOR(WHILE); |
5227 | ||
5228 | case KEY_warn: | |
3280af22 | 5229 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5230 | LOP(OP_WARN,XTERM); |
79072805 LW |
5231 | |
5232 | case KEY_wait: | |
5233 | FUN0(OP_WAIT); | |
5234 | ||
5235 | case KEY_waitpid: | |
a0d0e21e | 5236 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5237 | |
5238 | case KEY_wantarray: | |
5239 | FUN0(OP_WANTARRAY); | |
5240 | ||
5241 | case KEY_write: | |
9d116dd7 JH |
5242 | #ifdef EBCDIC |
5243 | { | |
df3728a2 JH |
5244 | char ctl_l[2]; |
5245 | ctl_l[0] = toCTRL('L'); | |
5246 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5247 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5248 | } | |
5249 | #else | |
5250 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5251 | #endif | |
79072805 LW |
5252 | UNI(OP_ENTERWRITE); |
5253 | ||
5254 | case KEY_x: | |
3280af22 | 5255 | if (PL_expect == XOPERATOR) |
79072805 LW |
5256 | Mop(OP_REPEAT); |
5257 | check_uni(); | |
5258 | goto just_a_word; | |
5259 | ||
a0d0e21e LW |
5260 | case KEY_xor: |
5261 | yylval.ival = OP_XOR; | |
5262 | OPERATOR(OROP); | |
5263 | ||
79072805 LW |
5264 | case KEY_y: |
5265 | s = scan_trans(s); | |
5266 | TERM(sublex_start()); | |
5267 | } | |
49dc05e3 | 5268 | }} |
79072805 | 5269 | } |
bf4acbe4 GS |
5270 | #ifdef __SC__ |
5271 | #pragma segment Main | |
5272 | #endif | |
79072805 | 5273 | |
e930465f JH |
5274 | static int |
5275 | S_pending_ident(pTHX) | |
8eceec63 SC |
5276 | { |
5277 | register char *d; | |
a55b55d8 | 5278 | register I32 tmp = 0; |
8eceec63 SC |
5279 | /* pit holds the identifier we read and pending_ident is reset */ |
5280 | char pit = PL_pending_ident; | |
5281 | PL_pending_ident = 0; | |
5282 | ||
5283 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5284 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5285 | ||
5286 | /* if we're in a my(), we can't allow dynamics here. | |
5287 | $foo'bar has already been turned into $foo::bar, so | |
5288 | just check for colons. | |
5289 | ||
5290 | if it's a legal name, the OP is a PADANY. | |
5291 | */ | |
5292 | if (PL_in_my) { | |
5293 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5294 | if (strchr(PL_tokenbuf,':')) | |
5295 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5296 | "variable %s in \"our\"", | |
5297 | PL_tokenbuf)); | |
dd2155a4 | 5298 | tmp = allocmy(PL_tokenbuf); |
8eceec63 SC |
5299 | } |
5300 | else { | |
5301 | if (strchr(PL_tokenbuf,':')) | |
5302 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5303 | ||
5304 | yylval.opval = newOP(OP_PADANY, 0); | |
dd2155a4 | 5305 | yylval.opval->op_targ = allocmy(PL_tokenbuf); |
8eceec63 SC |
5306 | return PRIVATEREF; |
5307 | } | |
5308 | } | |
5309 | ||
5310 | /* | |
5311 | build the ops for accesses to a my() variable. | |
5312 | ||
5313 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5314 | then used in a comparison. This catches most, but not | |
5315 | all cases. For instance, it catches | |
5316 | sort { my($a); $a <=> $b } | |
5317 | but not | |
5318 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5319 | (although why you'd do that is anyone's guess). | |
5320 | */ | |
5321 | ||
5322 | if (!strchr(PL_tokenbuf,':')) { | |
8716503d DM |
5323 | if (!PL_in_my) |
5324 | tmp = pad_findmy(PL_tokenbuf); | |
5325 | if (tmp != NOT_IN_PAD) { | |
8eceec63 | 5326 | /* might be an "our" variable" */ |
dd2155a4 | 5327 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
8eceec63 | 5328 | /* build ops for a bareword */ |
dd2155a4 | 5329 | SV *sym = newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)), 0); |
8eceec63 SC |
5330 | sv_catpvn(sym, "::", 2); |
5331 | sv_catpv(sym, PL_tokenbuf+1); | |
5332 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5333 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5334 | gv_fetchpv(SvPVX(sym), | |
5335 | (PL_in_eval | |
5336 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5337 | : GV_ADDMULTI |
8eceec63 SC |
5338 | ), |
5339 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5340 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5341 | : SVt_PVHV)); | |
5342 | return WORD; | |
5343 | } | |
5344 | ||
5345 | /* if it's a sort block and they're naming $a or $b */ | |
5346 | if (PL_last_lop_op == OP_SORT && | |
5347 | PL_tokenbuf[0] == '$' && | |
5348 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5349 | && !PL_tokenbuf[2]) | |
5350 | { | |
5351 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5352 | d < PL_bufend && *d != '\n'; | |
5353 | d++) | |
5354 | { | |
5355 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5356 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5357 | PL_tokenbuf); | |
5358 | } | |
5359 | } | |
5360 | } | |
5361 | ||
5362 | yylval.opval = newOP(OP_PADANY, 0); | |
5363 | yylval.opval->op_targ = tmp; | |
5364 | return PRIVATEREF; | |
5365 | } | |
5366 | } | |
5367 | ||
5368 | /* | |
5369 | Whine if they've said @foo in a doublequoted string, | |
5370 | and @foo isn't a variable we can find in the symbol | |
5371 | table. | |
5372 | */ | |
5373 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5374 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5375 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5376 | && ckWARN(WARN_AMBIGUOUS)) | |
5377 | { | |
5378 | /* Downgraded from fatal to warning 20000522 mjd */ | |
9014280d | 5379 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8eceec63 SC |
5380 | "Possible unintended interpolation of %s in string", |
5381 | PL_tokenbuf); | |
5382 | } | |
5383 | } | |
5384 | ||
5385 | /* build ops for a bareword */ | |
5386 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5387 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5388 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5389 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5390 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5391 | : SVt_PVHV)); | |
5392 | return WORD; | |
5393 | } | |
5394 | ||
79072805 | 5395 | I32 |
864dbfa3 | 5396 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5397 | { |
5398 | switch (*d) { | |
5399 | case '_': | |
5400 | if (d[1] == '_') { | |
a0d0e21e | 5401 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5402 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5403 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5404 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5405 | if (strEQ(d,"__END__")) return KEY___END__; |
5406 | } | |
5407 | break; | |
8990e307 LW |
5408 | case 'A': |
5409 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5410 | break; | |
79072805 | 5411 | case 'a': |
463ee0b2 LW |
5412 | switch (len) { |
5413 | case 3: | |
a0d0e21e LW |
5414 | if (strEQ(d,"and")) return -KEY_and; |
5415 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5416 | break; |
463ee0b2 | 5417 | case 5: |
a0d0e21e LW |
5418 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5419 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5420 | break; |
5421 | case 6: | |
a0d0e21e | 5422 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5423 | break; |
5424 | } | |
79072805 LW |
5425 | break; |
5426 | case 'B': | |
5427 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5428 | break; |
79072805 | 5429 | case 'b': |
a0d0e21e LW |
5430 | if (strEQ(d,"bless")) return -KEY_bless; |
5431 | if (strEQ(d,"bind")) return -KEY_bind; | |
5432 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5433 | break; | |
5434 | case 'C': | |
5435 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5436 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5437 | break; |
5438 | case 'c': | |
5439 | switch (len) { | |
5440 | case 3: | |
a0d0e21e LW |
5441 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5442 | if (strEQ(d,"chr")) return -KEY_chr; | |
5443 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5444 | break; |
5445 | case 4: | |
77bc9082 | 5446 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5447 | break; |
5448 | case 5: | |
a0d0e21e LW |
5449 | if (strEQ(d,"close")) return -KEY_close; |
5450 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5451 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5452 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5453 | if (strEQ(d,"chown")) return -KEY_chown; | |
5454 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5455 | break; |
5456 | case 6: | |
a0d0e21e LW |
5457 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5458 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5459 | break; |
5460 | case 7: | |
a0d0e21e | 5461 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5462 | break; |
5463 | case 8: | |
a0d0e21e LW |
5464 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5465 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5466 | break; |
5467 | } | |
5468 | break; | |
ed6116ce LW |
5469 | case 'D': |
5470 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5471 | break; | |
79072805 LW |
5472 | case 'd': |
5473 | switch (len) { | |
5474 | case 2: | |
5475 | if (strEQ(d,"do")) return KEY_do; | |
5476 | break; | |
5477 | case 3: | |
a0d0e21e | 5478 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5479 | break; |
5480 | case 4: | |
a0d0e21e | 5481 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5482 | break; |
5483 | case 6: | |
5484 | if (strEQ(d,"delete")) return KEY_delete; | |
5485 | break; | |
5486 | case 7: | |
5487 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5488 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5489 | break; |
5490 | case 8: | |
a0d0e21e | 5491 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5492 | break; |
5493 | } | |
5494 | break; | |
5495 | case 'E': | |
79072805 LW |
5496 | if (strEQ(d,"END")) return KEY_END; |
5497 | break; | |
5498 | case 'e': | |
5499 | switch (len) { | |
5500 | case 2: | |
a0d0e21e | 5501 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5502 | break; |
5503 | case 3: | |
a0d0e21e | 5504 | if (strEQ(d,"eof")) return -KEY_eof; |
c963b151 | 5505 | if (strEQ(d,"err")) return -KEY_err; |
a0d0e21e | 5506 | if (strEQ(d,"exp")) return -KEY_exp; |
79072805 LW |
5507 | break; |
5508 | case 4: | |
5509 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5510 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5511 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5512 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5513 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5514 | break; |
5515 | case 5: | |
5516 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5517 | break; | |
a0d0e21e LW |
5518 | case 6: |
5519 | if (strEQ(d,"exists")) return KEY_exists; | |
56da5a46 RGS |
5520 | if (strEQ(d,"elseif") && ckWARN_d(WARN_SYNTAX)) |
5521 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
5522 | "elseif should be elsif"); | |
a0d0e21e | 5523 | break; |
79072805 | 5524 | case 8: |
a0d0e21e LW |
5525 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5526 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5527 | break; |
5528 | case 9: | |
a0d0e21e | 5529 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5530 | break; |
5531 | case 10: | |
a0d0e21e LW |
5532 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5533 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5534 | break; |
5535 | case 11: | |
a0d0e21e | 5536 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5537 | break; |
a687059c | 5538 | } |
a687059c | 5539 | break; |
79072805 LW |
5540 | case 'f': |
5541 | switch (len) { | |
5542 | case 3: | |
5543 | if (strEQ(d,"for")) return KEY_for; | |
5544 | break; | |
5545 | case 4: | |
a0d0e21e | 5546 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5547 | break; |
5548 | case 5: | |
a0d0e21e LW |
5549 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5550 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5551 | break; |
5552 | case 6: | |
5553 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5554 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5555 | break; |
5556 | case 7: | |
5557 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5558 | break; | |
5559 | case 8: | |
a0d0e21e | 5560 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5561 | break; |
378cc40b | 5562 | } |
a687059c | 5563 | break; |
79072805 | 5564 | case 'g': |
a687059c LW |
5565 | if (strnEQ(d,"get",3)) { |
5566 | d += 3; | |
5567 | if (*d == 'p') { | |
79072805 LW |
5568 | switch (len) { |
5569 | case 7: | |
a0d0e21e LW |
5570 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5571 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5572 | break; |
5573 | case 8: | |
a0d0e21e LW |
5574 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5575 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5576 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5577 | break; |
5578 | case 11: | |
a0d0e21e LW |
5579 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5580 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5581 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5582 | break; |
5583 | case 14: | |
a0d0e21e | 5584 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5585 | break; |
5586 | case 16: | |
a0d0e21e | 5587 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5588 | break; |
5589 | } | |
a687059c LW |
5590 | } |
5591 | else if (*d == 'h') { | |
a0d0e21e LW |
5592 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5593 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5594 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5595 | } |
5596 | else if (*d == 'n') { | |
a0d0e21e LW |
5597 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5598 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5599 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5600 | } |
5601 | else if (*d == 's') { | |
a0d0e21e LW |
5602 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5603 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5604 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5605 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5606 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5607 | } |
5608 | else if (*d == 'g') { | |
a0d0e21e LW |
5609 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5610 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5611 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5612 | } |
5613 | else if (*d == 'l') { | |
a0d0e21e | 5614 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5615 | } |
a0d0e21e | 5616 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5617 | break; |
a687059c | 5618 | } |
79072805 LW |
5619 | switch (len) { |
5620 | case 2: | |
a0d0e21e LW |
5621 | if (strEQ(d,"gt")) return -KEY_gt; |
5622 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5623 | break; |
5624 | case 4: | |
5625 | if (strEQ(d,"grep")) return KEY_grep; | |
5626 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5627 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5628 | break; |
5629 | case 6: | |
a0d0e21e | 5630 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5631 | break; |
378cc40b | 5632 | } |
a687059c | 5633 | break; |
79072805 | 5634 | case 'h': |
a0d0e21e | 5635 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5636 | break; |
7d07dbc2 MB |
5637 | case 'I': |
5638 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5639 | break; | |
79072805 LW |
5640 | case 'i': |
5641 | switch (len) { | |
5642 | case 2: | |
5643 | if (strEQ(d,"if")) return KEY_if; | |
5644 | break; | |
5645 | case 3: | |
a0d0e21e | 5646 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5647 | break; |
5648 | case 5: | |
a0d0e21e LW |
5649 | if (strEQ(d,"index")) return -KEY_index; |
5650 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5651 | break; |
5652 | } | |
a687059c | 5653 | break; |
79072805 | 5654 | case 'j': |
a0d0e21e | 5655 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5656 | break; |
79072805 LW |
5657 | case 'k': |
5658 | if (len == 4) { | |
3a6a8333 | 5659 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5660 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5661 | } |
79072805 | 5662 | break; |
79072805 LW |
5663 | case 'l': |
5664 | switch (len) { | |
5665 | case 2: | |
a0d0e21e LW |
5666 | if (strEQ(d,"lt")) return -KEY_lt; |
5667 | if (strEQ(d,"le")) return -KEY_le; | |
5668 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5669 | break; |
5670 | case 3: | |
a0d0e21e | 5671 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5672 | break; |
5673 | case 4: | |
5674 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5675 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5676 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5677 | break; |
79072805 LW |
5678 | case 5: |
5679 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5680 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5681 | break; |
5682 | case 6: | |
a0d0e21e LW |
5683 | if (strEQ(d,"length")) return -KEY_length; |
5684 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5685 | break; |
5686 | case 7: | |
a0d0e21e | 5687 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5688 | break; |
5689 | case 9: | |
a0d0e21e | 5690 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5691 | break; |
5692 | } | |
a687059c | 5693 | break; |
79072805 LW |
5694 | case 'm': |
5695 | switch (len) { | |
5696 | case 1: return KEY_m; | |
93a17b20 LW |
5697 | case 2: |
5698 | if (strEQ(d,"my")) return KEY_my; | |
5699 | break; | |
a0d0e21e LW |
5700 | case 3: |
5701 | if (strEQ(d,"map")) return KEY_map; | |
5702 | break; | |
79072805 | 5703 | case 5: |
a0d0e21e | 5704 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5705 | break; |
5706 | case 6: | |
a0d0e21e LW |
5707 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5708 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5709 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5710 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5711 | break; |
5712 | } | |
a687059c | 5713 | break; |
79072805 LW |
5714 | case 'n': |
5715 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5716 | if (strEQ(d,"ne")) return -KEY_ne; |
5717 | if (strEQ(d,"not")) return -KEY_not; | |
5718 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5719 | break; |
79072805 LW |
5720 | case 'o': |
5721 | switch (len) { | |
463ee0b2 | 5722 | case 2: |
a0d0e21e | 5723 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5724 | break; |
79072805 | 5725 | case 3: |
a0d0e21e LW |
5726 | if (strEQ(d,"ord")) return -KEY_ord; |
5727 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5728 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5729 | break; |
5730 | case 4: | |
a0d0e21e | 5731 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5732 | break; |
5733 | case 7: | |
a0d0e21e | 5734 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5735 | break; |
fe14fcc3 | 5736 | } |
a687059c | 5737 | break; |
79072805 LW |
5738 | case 'p': |
5739 | switch (len) { | |
5740 | case 3: | |
4e553d73 | 5741 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5742 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5743 | break; |
5744 | case 4: | |
3a6a8333 | 5745 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5746 | if (strEQ(d,"pack")) return -KEY_pack; |
5747 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5748 | break; |
5749 | case 5: | |
5750 | if (strEQ(d,"print")) return KEY_print; | |
5751 | break; | |
5752 | case 6: | |
5753 | if (strEQ(d,"printf")) return KEY_printf; | |
5754 | break; | |
5755 | case 7: | |
5756 | if (strEQ(d,"package")) return KEY_package; | |
5757 | break; | |
c07a80fd | 5758 | case 9: |
5759 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5760 | } |
79072805 LW |
5761 | break; |
5762 | case 'q': | |
5763 | if (len <= 2) { | |
5764 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5765 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5766 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5767 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5768 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5769 | } |
a0d0e21e | 5770 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5771 | break; |
5772 | case 'r': | |
5773 | switch (len) { | |
5774 | case 3: | |
a0d0e21e | 5775 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5776 | break; |
5777 | case 4: | |
a0d0e21e LW |
5778 | if (strEQ(d,"read")) return -KEY_read; |
5779 | if (strEQ(d,"rand")) return -KEY_rand; | |
5780 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5781 | if (strEQ(d,"redo")) return KEY_redo; |
5782 | break; | |
5783 | case 5: | |
a0d0e21e LW |
5784 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5785 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5786 | break; |
5787 | case 6: | |
5788 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5789 | if (strEQ(d,"rename")) return -KEY_rename; |
5790 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5791 | break; |
5792 | case 7: | |
ec4ab249 | 5793 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5794 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5795 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5796 | break; |
5797 | case 8: | |
a0d0e21e LW |
5798 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5799 | if (strEQ(d,"readline")) return -KEY_readline; | |
5800 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5801 | break; |
5802 | case 9: | |
a0d0e21e | 5803 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5804 | break; |
a687059c | 5805 | } |
79072805 LW |
5806 | break; |
5807 | case 's': | |
a687059c | 5808 | switch (d[1]) { |
79072805 | 5809 | case 0: return KEY_s; |
a687059c | 5810 | case 'c': |
79072805 | 5811 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5812 | break; |
5813 | case 'e': | |
79072805 LW |
5814 | switch (len) { |
5815 | case 4: | |
a0d0e21e LW |
5816 | if (strEQ(d,"seek")) return -KEY_seek; |
5817 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5818 | break; |
5819 | case 5: | |
a0d0e21e | 5820 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5821 | break; |
5822 | case 6: | |
a0d0e21e LW |
5823 | if (strEQ(d,"select")) return -KEY_select; |
5824 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5825 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5826 | break; |
5827 | case 7: | |
a0d0e21e LW |
5828 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5829 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5830 | break; |
5831 | case 8: | |
a0d0e21e LW |
5832 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5833 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5834 | break; |
5835 | case 9: | |
a0d0e21e | 5836 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5837 | break; |
5838 | case 10: | |
a0d0e21e LW |
5839 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5840 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5841 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5842 | break; |
5843 | case 11: | |
a0d0e21e LW |
5844 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5845 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5846 | break; |
5847 | } | |
a687059c LW |
5848 | break; |
5849 | case 'h': | |
79072805 LW |
5850 | switch (len) { |
5851 | case 5: | |
3a6a8333 | 5852 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
5853 | break; |
5854 | case 6: | |
a0d0e21e LW |
5855 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5856 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5857 | break; |
5858 | case 7: | |
a0d0e21e | 5859 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5860 | break; |
5861 | case 8: | |
a0d0e21e LW |
5862 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5863 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5864 | break; |
5865 | } | |
a687059c LW |
5866 | break; |
5867 | case 'i': | |
a0d0e21e | 5868 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5869 | break; |
5870 | case 'l': | |
a0d0e21e | 5871 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5872 | break; |
5873 | case 'o': | |
79072805 | 5874 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5875 | if (strEQ(d,"socket")) return -KEY_socket; |
5876 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5877 | break; |
5878 | case 'p': | |
79072805 | 5879 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5880 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 5881 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
5882 | break; |
5883 | case 'q': | |
a0d0e21e | 5884 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5885 | break; |
5886 | case 'r': | |
a0d0e21e | 5887 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5888 | break; |
5889 | case 't': | |
a0d0e21e | 5890 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5891 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5892 | break; |
5893 | case 'u': | |
a0d0e21e | 5894 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5895 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5896 | break; |
5897 | case 'y': | |
79072805 LW |
5898 | switch (len) { |
5899 | case 6: | |
a0d0e21e | 5900 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5901 | break; |
5902 | case 7: | |
a0d0e21e LW |
5903 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5904 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5905 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5906 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5907 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5908 | break; |
5909 | case 8: | |
a0d0e21e | 5910 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5911 | break; |
a687059c | 5912 | } |
a687059c LW |
5913 | break; |
5914 | } | |
5915 | break; | |
79072805 LW |
5916 | case 't': |
5917 | switch (len) { | |
5918 | case 2: | |
5919 | if (strEQ(d,"tr")) return KEY_tr; | |
5920 | break; | |
463ee0b2 LW |
5921 | case 3: |
5922 | if (strEQ(d,"tie")) return KEY_tie; | |
5923 | break; | |
79072805 | 5924 | case 4: |
a0d0e21e | 5925 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5926 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5927 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5928 | break; |
5929 | case 5: | |
a0d0e21e | 5930 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5931 | break; |
5932 | case 7: | |
a0d0e21e | 5933 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5934 | break; |
5935 | case 8: | |
a0d0e21e | 5936 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5937 | break; |
378cc40b | 5938 | } |
a687059c | 5939 | break; |
79072805 LW |
5940 | case 'u': |
5941 | switch (len) { | |
5942 | case 2: | |
a0d0e21e LW |
5943 | if (strEQ(d,"uc")) return -KEY_uc; |
5944 | break; | |
5945 | case 3: | |
5946 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5947 | break; |
5948 | case 5: | |
5949 | if (strEQ(d,"undef")) return KEY_undef; | |
5950 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5951 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5952 | if (strEQ(d,"utime")) return -KEY_utime; |
5953 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5954 | break; |
5955 | case 6: | |
5956 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5957 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5958 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5959 | break; |
5960 | case 7: | |
3a6a8333 | 5961 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 5962 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5963 | break; |
a687059c LW |
5964 | } |
5965 | break; | |
79072805 | 5966 | case 'v': |
a0d0e21e LW |
5967 | if (strEQ(d,"values")) return -KEY_values; |
5968 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5969 | break; |
79072805 LW |
5970 | case 'w': |
5971 | switch (len) { | |
5972 | case 4: | |
a0d0e21e LW |
5973 | if (strEQ(d,"warn")) return -KEY_warn; |
5974 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5975 | break; |
5976 | case 5: | |
5977 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5978 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5979 | break; |
5980 | case 7: | |
a0d0e21e | 5981 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5982 | break; |
5983 | case 9: | |
a0d0e21e | 5984 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5985 | break; |
2f3197b3 | 5986 | } |
a687059c | 5987 | break; |
79072805 | 5988 | case 'x': |
a0d0e21e LW |
5989 | if (len == 1) return -KEY_x; |
5990 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5991 | break; |
79072805 LW |
5992 | case 'y': |
5993 | if (len == 1) return KEY_y; | |
5994 | break; | |
5995 | case 'z': | |
a687059c LW |
5996 | break; |
5997 | } | |
79072805 | 5998 | return 0; |
a687059c LW |
5999 | } |
6000 | ||
76e3520e | 6001 | STATIC void |
cea2e8a9 | 6002 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 6003 | { |
2f3197b3 LW |
6004 | char *w; |
6005 | ||
d008e5eb | 6006 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
6007 | if (ckWARN(WARN_SYNTAX)) { |
6008 | int level = 1; | |
6009 | for (w = s+2; *w && level; w++) { | |
6010 | if (*w == '(') | |
6011 | ++level; | |
6012 | else if (*w == ')') | |
6013 | --level; | |
6014 | } | |
6015 | if (*w) | |
6016 | for (; *w && isSPACE(*w); w++) ; | |
6017 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
9014280d | 6018 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 6019 | "%s (...) interpreted as function",name); |
d008e5eb | 6020 | } |
2f3197b3 | 6021 | } |
3280af22 | 6022 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 6023 | s++; |
a687059c LW |
6024 | if (*s == '(') |
6025 | s++; | |
3280af22 | 6026 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6027 | s++; |
7e2040f0 | 6028 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 6029 | w = s++; |
7e2040f0 | 6030 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 6031 | s++; |
3280af22 | 6032 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6033 | s++; |
e929a76b | 6034 | if (*s == ',') { |
463ee0b2 | 6035 | int kw; |
e929a76b | 6036 | *s = '\0'; |
864dbfa3 | 6037 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 6038 | *s = ','; |
463ee0b2 | 6039 | if (kw) |
e929a76b | 6040 | return; |
cea2e8a9 | 6041 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
6042 | } |
6043 | } | |
6044 | } | |
6045 | ||
423cee85 JH |
6046 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
6047 | Best used as sv=new_constant(..., sv, ...). | |
6048 | If s, pv are NULL, calls subroutine with one argument, | |
6049 | and type is used with error messages only. */ | |
6050 | ||
b3ac6de7 | 6051 | STATIC SV * |
dff6d3cd | 6052 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 6053 | const char *type) |
b3ac6de7 | 6054 | { |
b3ac6de7 | 6055 | dSP; |
3280af22 | 6056 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 6057 | SV *res; |
b3ac6de7 IZ |
6058 | SV **cvp; |
6059 | SV *cv, *typesv; | |
f0af216f | 6060 | const char *why1, *why2, *why3; |
4e553d73 | 6061 | |
f0af216f | 6062 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
6063 | SV *msg; |
6064 | ||
f0af216f | 6065 | why2 = strEQ(key,"charnames") |
41ab332f | 6066 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 6067 | : ""; |
4e553d73 | 6068 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
6069 | (type ? type: "undef"), why2); |
6070 | ||
6071 | /* This is convoluted and evil ("goto considered harmful") | |
6072 | * but I do not understand the intricacies of all the different | |
6073 | * failure modes of %^H in here. The goal here is to make | |
6074 | * the most probable error message user-friendly. --jhi */ | |
6075 | ||
6076 | goto msgdone; | |
6077 | ||
423cee85 | 6078 | report: |
4e553d73 | 6079 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 6080 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 6081 | msgdone: |
423cee85 JH |
6082 | yyerror(SvPVX(msg)); |
6083 | SvREFCNT_dec(msg); | |
6084 | return sv; | |
6085 | } | |
b3ac6de7 IZ |
6086 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
6087 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
6088 | why1 = "$^H{"; |
6089 | why2 = key; | |
f0af216f | 6090 | why3 = "} is not defined"; |
423cee85 | 6091 | goto report; |
b3ac6de7 IZ |
6092 | } |
6093 | sv_2mortal(sv); /* Parent created it permanently */ | |
6094 | cv = *cvp; | |
423cee85 JH |
6095 | if (!pv && s) |
6096 | pv = sv_2mortal(newSVpvn(s, len)); | |
6097 | if (type && pv) | |
6098 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6099 | else |
423cee85 | 6100 | typesv = &PL_sv_undef; |
4e553d73 | 6101 | |
e788e7d3 | 6102 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6103 | ENTER ; |
6104 | SAVETMPS; | |
4e553d73 | 6105 | |
423cee85 | 6106 | PUSHMARK(SP) ; |
a5845cb7 | 6107 | EXTEND(sp, 3); |
423cee85 JH |
6108 | if (pv) |
6109 | PUSHs(pv); | |
b3ac6de7 | 6110 | PUSHs(sv); |
423cee85 JH |
6111 | if (pv) |
6112 | PUSHs(typesv); | |
b3ac6de7 | 6113 | PUTBACK; |
423cee85 | 6114 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6115 | |
423cee85 | 6116 | SPAGAIN ; |
4e553d73 | 6117 | |
423cee85 | 6118 | /* Check the eval first */ |
9b0e499b | 6119 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6120 | STRLEN n_a; |
6121 | sv_catpv(ERRSV, "Propagated"); | |
6122 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6123 | (void)POPs; |
423cee85 JH |
6124 | res = SvREFCNT_inc(sv); |
6125 | } | |
6126 | else { | |
6127 | res = POPs; | |
e1f15930 | 6128 | (void)SvREFCNT_inc(res); |
423cee85 | 6129 | } |
4e553d73 | 6130 | |
423cee85 JH |
6131 | PUTBACK ; |
6132 | FREETMPS ; | |
6133 | LEAVE ; | |
b3ac6de7 | 6134 | POPSTACK; |
4e553d73 | 6135 | |
b3ac6de7 | 6136 | if (!SvOK(res)) { |
423cee85 JH |
6137 | why1 = "Call to &{$^H{"; |
6138 | why2 = key; | |
f0af216f | 6139 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6140 | sv = res; |
6141 | goto report; | |
9b0e499b | 6142 | } |
423cee85 | 6143 | |
9b0e499b | 6144 | return res; |
b3ac6de7 | 6145 | } |
4e553d73 | 6146 | |
76e3520e | 6147 | STATIC char * |
cea2e8a9 | 6148 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6149 | { |
6150 | register char *d = dest; | |
8903cb82 | 6151 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6152 | for (;;) { |
8903cb82 | 6153 | if (d >= e) |
cea2e8a9 | 6154 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6155 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6156 | *d++ = *s++; |
7e2040f0 | 6157 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6158 | *d++ = ':'; |
6159 | *d++ = ':'; | |
6160 | s++; | |
6161 | } | |
c3e0f903 | 6162 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6163 | *d++ = *s++; |
6164 | *d++ = *s++; | |
6165 | } | |
fd400ab9 | 6166 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6167 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6168 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6169 | t += UTF8SKIP(t); |
6170 | if (d + (t - s) > e) | |
cea2e8a9 | 6171 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6172 | Copy(s, d, t - s, char); |
6173 | d += t - s; | |
6174 | s = t; | |
6175 | } | |
463ee0b2 LW |
6176 | else { |
6177 | *d = '\0'; | |
6178 | *slp = d - dest; | |
6179 | return s; | |
e929a76b | 6180 | } |
378cc40b LW |
6181 | } |
6182 | } | |
6183 | ||
76e3520e | 6184 | STATIC char * |
cea2e8a9 | 6185 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6186 | { |
6187 | register char *d; | |
8903cb82 | 6188 | register char *e; |
79072805 | 6189 | char *bracket = 0; |
748a9306 | 6190 | char funny = *s++; |
378cc40b | 6191 | |
a0d0e21e LW |
6192 | if (isSPACE(*s)) |
6193 | s = skipspace(s); | |
378cc40b | 6194 | d = dest; |
8903cb82 | 6195 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6196 | if (isDIGIT(*s)) { |
8903cb82 | 6197 | while (isDIGIT(*s)) { |
6198 | if (d >= e) | |
cea2e8a9 | 6199 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6200 | *d++ = *s++; |
8903cb82 | 6201 | } |
378cc40b LW |
6202 | } |
6203 | else { | |
463ee0b2 | 6204 | for (;;) { |
8903cb82 | 6205 | if (d >= e) |
cea2e8a9 | 6206 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6207 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6208 | *d++ = *s++; |
7e2040f0 | 6209 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6210 | *d++ = ':'; |
6211 | *d++ = ':'; | |
6212 | s++; | |
6213 | } | |
a0d0e21e | 6214 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6215 | *d++ = *s++; |
6216 | *d++ = *s++; | |
6217 | } | |
fd400ab9 | 6218 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6219 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6220 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6221 | t += UTF8SKIP(t); |
6222 | if (d + (t - s) > e) | |
cea2e8a9 | 6223 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6224 | Copy(s, d, t - s, char); |
6225 | d += t - s; | |
6226 | s = t; | |
6227 | } | |
463ee0b2 LW |
6228 | else |
6229 | break; | |
6230 | } | |
378cc40b LW |
6231 | } |
6232 | *d = '\0'; | |
6233 | d = dest; | |
79072805 | 6234 | if (*d) { |
3280af22 NIS |
6235 | if (PL_lex_state != LEX_NORMAL) |
6236 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6237 | return s; |
378cc40b | 6238 | } |
748a9306 | 6239 | if (*s == '$' && s[1] && |
7e2040f0 | 6240 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6241 | { |
4810e5ec | 6242 | return s; |
5cd24f17 | 6243 | } |
79072805 LW |
6244 | if (*s == '{') { |
6245 | bracket = s; | |
6246 | s++; | |
6247 | } | |
6248 | else if (ck_uni) | |
6249 | check_uni(); | |
93a17b20 | 6250 | if (s < send) |
79072805 LW |
6251 | *d = *s++; |
6252 | d[1] = '\0'; | |
2b92dfce | 6253 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6254 | *d = toCTRL(*s); |
6255 | s++; | |
de3bb511 | 6256 | } |
79072805 | 6257 | if (bracket) { |
748a9306 | 6258 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6259 | while (s < send) { |
6260 | char ch = *s++; | |
bf4acbe4 | 6261 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6262 | *d = ch; |
6263 | break; | |
6264 | } | |
6265 | } | |
748a9306 | 6266 | } |
7e2040f0 | 6267 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6268 | d++; |
a0ed51b3 LW |
6269 | if (UTF) { |
6270 | e = s; | |
155aba94 | 6271 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6272 | e += UTF8SKIP(e); |
fd400ab9 | 6273 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6274 | e += UTF8SKIP(e); |
6275 | } | |
6276 | Copy(s, d, e - s, char); | |
6277 | d += e - s; | |
6278 | s = e; | |
6279 | } | |
6280 | else { | |
2b92dfce | 6281 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6282 | *d++ = *s++; |
2b92dfce | 6283 | if (d >= e) |
cea2e8a9 | 6284 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6285 | } |
79072805 | 6286 | *d = '\0'; |
bf4acbe4 | 6287 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6288 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6289 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6290 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
9014280d | 6291 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 6292 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6293 | funny, dest, brack, funny, dest, brack); |
6294 | } | |
79072805 | 6295 | bracket++; |
a0be28da | 6296 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6297 | return s; |
6298 | } | |
4e553d73 NIS |
6299 | } |
6300 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6301 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6302 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6303 | && isALNUM(*s)) | |
6304 | { | |
6305 | d++; | |
6306 | while (isALNUM(*s) && d < e) { | |
6307 | *d++ = *s++; | |
6308 | } | |
6309 | if (d >= e) | |
cea2e8a9 | 6310 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6311 | *d = '\0'; |
79072805 LW |
6312 | } |
6313 | if (*s == '}') { | |
6314 | s++; | |
7df0d042 | 6315 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 6316 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
6317 | PL_expect = XREF; |
6318 | } | |
748a9306 LW |
6319 | if (funny == '#') |
6320 | funny = '@'; | |
d008e5eb | 6321 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6322 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6323 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6324 | { |
9014280d | 6325 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
6326 | "Ambiguous use of %c{%s} resolved to %c%s", |
6327 | funny, dest, funny, dest); | |
6328 | } | |
6329 | } | |
79072805 LW |
6330 | } |
6331 | else { | |
6332 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6333 | *dest = '\0'; |
79072805 LW |
6334 | } |
6335 | } | |
3280af22 NIS |
6336 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6337 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6338 | return s; |
6339 | } | |
6340 | ||
cea2e8a9 | 6341 | void |
2b36a5a0 | 6342 | Perl_pmflag(pTHX_ U32* pmfl, int ch) |
a0d0e21e | 6343 | { |
bbce6d69 | 6344 | if (ch == 'i') |
a0d0e21e | 6345 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6346 | else if (ch == 'g') |
6347 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6348 | else if (ch == 'c') |
6349 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6350 | else if (ch == 'o') |
6351 | *pmfl |= PMf_KEEP; | |
6352 | else if (ch == 'm') | |
6353 | *pmfl |= PMf_MULTILINE; | |
6354 | else if (ch == 's') | |
6355 | *pmfl |= PMf_SINGLELINE; | |
6356 | else if (ch == 'x') | |
6357 | *pmfl |= PMf_EXTENDED; | |
6358 | } | |
378cc40b | 6359 | |
76e3520e | 6360 | STATIC char * |
cea2e8a9 | 6361 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6362 | { |
79072805 LW |
6363 | PMOP *pm; |
6364 | char *s; | |
378cc40b | 6365 | |
09bef843 | 6366 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6367 | if (!s) |
cea2e8a9 | 6368 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6369 | |
8782bef2 | 6370 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6371 | if (PL_multi_open == '?') |
79072805 | 6372 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6373 | if(type == OP_QR) { |
6374 | while (*s && strchr("iomsx", *s)) | |
6375 | pmflag(&pm->op_pmflags,*s++); | |
6376 | } | |
6377 | else { | |
6378 | while (*s && strchr("iogcmsx", *s)) | |
6379 | pmflag(&pm->op_pmflags,*s++); | |
6380 | } | |
4ac733c9 MJD |
6381 | /* issue a warning if /c is specified,but /g is not */ |
6382 | if (ckWARN(WARN_REGEXP) && | |
6383 | (pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) | |
6384 | { | |
6385 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_without_g); | |
6386 | } | |
6387 | ||
4633a7c4 | 6388 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6389 | |
3280af22 | 6390 | PL_lex_op = (OP*)pm; |
79072805 | 6391 | yylval.ival = OP_MATCH; |
378cc40b LW |
6392 | return s; |
6393 | } | |
6394 | ||
76e3520e | 6395 | STATIC char * |
cea2e8a9 | 6396 | S_scan_subst(pTHX_ char *start) |
79072805 | 6397 | { |
a0d0e21e | 6398 | register char *s; |
79072805 | 6399 | register PMOP *pm; |
4fdae800 | 6400 | I32 first_start; |
79072805 LW |
6401 | I32 es = 0; |
6402 | ||
79072805 LW |
6403 | yylval.ival = OP_NULL; |
6404 | ||
09bef843 | 6405 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6406 | |
37fd879b | 6407 | if (!s) |
cea2e8a9 | 6408 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6409 | |
3280af22 | 6410 | if (s[-1] == PL_multi_open) |
79072805 LW |
6411 | s--; |
6412 | ||
3280af22 | 6413 | first_start = PL_multi_start; |
09bef843 | 6414 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6415 | if (!s) { |
37fd879b | 6416 | if (PL_lex_stuff) { |
3280af22 | 6417 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6418 | PL_lex_stuff = Nullsv; |
6419 | } | |
cea2e8a9 | 6420 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6421 | } |
3280af22 | 6422 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6423 | |
79072805 | 6424 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6425 | while (*s) { |
a687059c LW |
6426 | if (*s == 'e') { |
6427 | s++; | |
2f3197b3 | 6428 | es++; |
a687059c | 6429 | } |
b3eb6a9b | 6430 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6431 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6432 | else |
6433 | break; | |
378cc40b | 6434 | } |
79072805 | 6435 | |
64e578a2 MJD |
6436 | /* /c is not meaningful with s/// */ |
6437 | if (ckWARN(WARN_REGEXP) && (pm->op_pmflags & PMf_CONTINUE)) | |
4ac733c9 | 6438 | { |
64e578a2 | 6439 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_in_subst); |
4ac733c9 MJD |
6440 | } |
6441 | ||
79072805 LW |
6442 | if (es) { |
6443 | SV *repl; | |
0244c3a4 GS |
6444 | PL_sublex_info.super_bufptr = s; |
6445 | PL_sublex_info.super_bufend = PL_bufend; | |
6446 | PL_multi_end = 0; | |
79072805 | 6447 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6448 | repl = newSVpvn("",0); |
463ee0b2 | 6449 | while (es-- > 0) |
a0d0e21e | 6450 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6451 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6452 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6453 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6454 | SvEVALED_on(repl); |
3280af22 NIS |
6455 | SvREFCNT_dec(PL_lex_repl); |
6456 | PL_lex_repl = repl; | |
378cc40b | 6457 | } |
79072805 | 6458 | |
4633a7c4 | 6459 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6460 | PL_lex_op = (OP*)pm; |
79072805 | 6461 | yylval.ival = OP_SUBST; |
378cc40b LW |
6462 | return s; |
6463 | } | |
6464 | ||
76e3520e | 6465 | STATIC char * |
cea2e8a9 | 6466 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6467 | { |
a0d0e21e | 6468 | register char* s; |
11343788 | 6469 | OP *o; |
79072805 LW |
6470 | short *tbl; |
6471 | I32 squash; | |
a0ed51b3 | 6472 | I32 del; |
79072805 LW |
6473 | I32 complement; |
6474 | ||
6475 | yylval.ival = OP_NULL; | |
6476 | ||
09bef843 | 6477 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6478 | if (!s) |
cea2e8a9 | 6479 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6480 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6481 | s--; |
6482 | ||
09bef843 | 6483 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6484 | if (!s) { |
37fd879b | 6485 | if (PL_lex_stuff) { |
3280af22 | 6486 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6487 | PL_lex_stuff = Nullsv; |
6488 | } | |
cea2e8a9 | 6489 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6490 | } |
79072805 | 6491 | |
a0ed51b3 | 6492 | complement = del = squash = 0; |
6940069f | 6493 | while (strchr("cds", *s)) { |
395c3793 | 6494 | if (*s == 'c') |
79072805 | 6495 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6496 | else if (*s == 'd') |
a0ed51b3 LW |
6497 | del = OPpTRANS_DELETE; |
6498 | else if (*s == 's') | |
79072805 | 6499 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6500 | s++; |
6501 | } | |
8973db79 JH |
6502 | |
6503 | New(803, tbl, complement&&!del?258:256, short); | |
6504 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
59f00321 RGS |
6505 | o->op_private &= ~OPpTRANS_ALL; |
6506 | o->op_private |= del|squash|complement| | |
7948272d NIS |
6507 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
6508 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6509 | |
3280af22 | 6510 | PL_lex_op = o; |
79072805 LW |
6511 | yylval.ival = OP_TRANS; |
6512 | return s; | |
6513 | } | |
6514 | ||
76e3520e | 6515 | STATIC char * |
cea2e8a9 | 6516 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6517 | { |
6518 | SV *herewas; | |
6519 | I32 op_type = OP_SCALAR; | |
6520 | I32 len; | |
6521 | SV *tmpstr; | |
6522 | char term; | |
6523 | register char *d; | |
fc36a67e | 6524 | register char *e; |
4633a7c4 | 6525 | char *peek; |
3280af22 | 6526 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6527 | |
6528 | s += 2; | |
3280af22 NIS |
6529 | d = PL_tokenbuf; |
6530 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6531 | if (!outer) |
79072805 | 6532 | *d++ = '\n'; |
bf4acbe4 | 6533 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6534 | if (*peek && strchr("`'\"",*peek)) { |
6535 | s = peek; | |
79072805 | 6536 | term = *s++; |
3280af22 | 6537 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6538 | d += len; |
3280af22 | 6539 | if (s < PL_bufend) |
79072805 | 6540 | s++; |
79072805 LW |
6541 | } |
6542 | else { | |
6543 | if (*s == '\\') | |
6544 | s++, term = '\''; | |
6545 | else | |
6546 | term = '"'; | |
7e2040f0 | 6547 | if (!isALNUM_lazy_if(s,UTF)) |
12bcd1a6 | 6548 | deprecate_old("bare << to mean <<\"\""); |
7e2040f0 | 6549 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6550 | if (d < e) |
6551 | *d++ = *s; | |
6552 | } | |
6553 | } | |
3280af22 | 6554 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6555 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6556 | *d++ = '\n'; |
6557 | *d = '\0'; | |
3280af22 | 6558 | len = d - PL_tokenbuf; |
6a27c188 | 6559 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6560 | d = strchr(s, '\r'); |
6561 | if (d) { | |
6562 | char *olds = s; | |
6563 | s = d; | |
3280af22 | 6564 | while (s < PL_bufend) { |
f63a84b2 LW |
6565 | if (*s == '\r') { |
6566 | *d++ = '\n'; | |
6567 | if (*++s == '\n') | |
6568 | s++; | |
6569 | } | |
6570 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6571 | *d++ = *s++; | |
6572 | s++; | |
6573 | } | |
6574 | else | |
6575 | *d++ = *s++; | |
6576 | } | |
6577 | *d = '\0'; | |
3280af22 NIS |
6578 | PL_bufend = d; |
6579 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6580 | s = olds; |
6581 | } | |
6582 | #endif | |
79072805 | 6583 | d = "\n"; |
3280af22 | 6584 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6585 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6586 | else |
79cb57f6 | 6587 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6588 | s += SvCUR(herewas); |
748a9306 | 6589 | |
8d6dde3e | 6590 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6591 | sv_upgrade(tmpstr, SVt_PVIV); |
6592 | if (term == '\'') { | |
79072805 | 6593 | op_type = OP_CONST; |
748a9306 LW |
6594 | SvIVX(tmpstr) = -1; |
6595 | } | |
6596 | else if (term == '`') { | |
79072805 | 6597 | op_type = OP_BACKTICK; |
748a9306 LW |
6598 | SvIVX(tmpstr) = '\\'; |
6599 | } | |
79072805 LW |
6600 | |
6601 | CLINE; | |
57843af0 | 6602 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6603 | PL_multi_open = PL_multi_close = '<'; |
6604 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6605 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6606 | char *bufptr = PL_sublex_info.super_bufptr; | |
6607 | char *bufend = PL_sublex_info.super_bufend; | |
6608 | char *olds = s - SvCUR(herewas); | |
6609 | s = strchr(bufptr, '\n'); | |
6610 | if (!s) | |
6611 | s = bufend; | |
6612 | d = s; | |
6613 | while (s < bufend && | |
6614 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6615 | if (*s++ == '\n') | |
57843af0 | 6616 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6617 | } |
6618 | if (s >= bufend) { | |
eb160463 | 6619 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
6620 | missingterm(PL_tokenbuf); |
6621 | } | |
6622 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6623 | sv_setpvn(tmpstr,d+1,s-d); | |
6624 | s += len - 1; | |
6625 | sv_catpvn(herewas,s,bufend-s); | |
6626 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6627 | ||
6628 | s = olds; | |
6629 | goto retval; | |
6630 | } | |
6631 | else if (!outer) { | |
79072805 | 6632 | d = s; |
3280af22 NIS |
6633 | while (s < PL_bufend && |
6634 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6635 | if (*s++ == '\n') |
57843af0 | 6636 | CopLINE_inc(PL_curcop); |
79072805 | 6637 | } |
3280af22 | 6638 | if (s >= PL_bufend) { |
eb160463 | 6639 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6640 | missingterm(PL_tokenbuf); |
79072805 LW |
6641 | } |
6642 | sv_setpvn(tmpstr,d+1,s-d); | |
6643 | s += len - 1; | |
57843af0 | 6644 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6645 | |
3280af22 NIS |
6646 | sv_catpvn(herewas,s,PL_bufend-s); |
6647 | sv_setsv(PL_linestr,herewas); | |
6648 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6649 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6650 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6651 | } |
6652 | else | |
6653 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6654 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6655 | if (!outer || |
3280af22 | 6656 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
eb160463 | 6657 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6658 | missingterm(PL_tokenbuf); |
79072805 | 6659 | } |
57843af0 | 6660 | CopLINE_inc(PL_curcop); |
3280af22 | 6661 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6662 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6663 | #ifndef PERL_STRICT_CR |
3280af22 | 6664 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6665 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6666 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6667 | { |
3280af22 NIS |
6668 | PL_bufend[-2] = '\n'; |
6669 | PL_bufend--; | |
6670 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6671 | } |
3280af22 NIS |
6672 | else if (PL_bufend[-1] == '\r') |
6673 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6674 | } |
3280af22 NIS |
6675 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6676 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6677 | #endif |
3280af22 | 6678 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6679 | SV *sv = NEWSV(88,0); |
6680 | ||
93a17b20 | 6681 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6682 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6683 | (void)SvIOK_on(sv); |
6684 | SvIVX(sv) = 0; | |
57843af0 | 6685 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6686 | } |
3280af22 NIS |
6687 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6688 | s = PL_bufend - 1; | |
79072805 | 6689 | *s = ' '; |
3280af22 NIS |
6690 | sv_catsv(PL_linestr,herewas); |
6691 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6692 | } |
6693 | else { | |
3280af22 NIS |
6694 | s = PL_bufend; |
6695 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6696 | } |
6697 | } | |
79072805 | 6698 | s++; |
0244c3a4 | 6699 | retval: |
57843af0 | 6700 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6701 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6702 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6703 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6704 | } |
8990e307 | 6705 | SvREFCNT_dec(herewas); |
2f31ce75 JH |
6706 | if (!IN_BYTES) { |
6707 | if (UTF && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) | |
6708 | SvUTF8_on(tmpstr); | |
6709 | else if (PL_encoding) | |
6710 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
6711 | } | |
3280af22 | 6712 | PL_lex_stuff = tmpstr; |
79072805 LW |
6713 | yylval.ival = op_type; |
6714 | return s; | |
6715 | } | |
6716 | ||
02aa26ce NT |
6717 | /* scan_inputsymbol |
6718 | takes: current position in input buffer | |
6719 | returns: new position in input buffer | |
6720 | side-effects: yylval and lex_op are set. | |
6721 | ||
6722 | This code handles: | |
6723 | ||
6724 | <> read from ARGV | |
6725 | <FH> read from filehandle | |
6726 | <pkg::FH> read from package qualified filehandle | |
6727 | <pkg'FH> read from package qualified filehandle | |
6728 | <$fh> read from filehandle in $fh | |
6729 | <*.h> filename glob | |
6730 | ||
6731 | */ | |
6732 | ||
76e3520e | 6733 | STATIC char * |
cea2e8a9 | 6734 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6735 | { |
02aa26ce | 6736 | register char *s = start; /* current position in buffer */ |
79072805 | 6737 | register char *d; |
fc36a67e | 6738 | register char *e; |
1b420867 | 6739 | char *end; |
79072805 LW |
6740 | I32 len; |
6741 | ||
3280af22 NIS |
6742 | d = PL_tokenbuf; /* start of temp holding space */ |
6743 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6744 | end = strchr(s, '\n'); |
6745 | if (!end) | |
6746 | end = PL_bufend; | |
6747 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6748 | |
6749 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6750 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6751 | */ |
6752 | ||
3280af22 | 6753 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6754 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6755 | if (s >= end) |
cea2e8a9 | 6756 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6757 | |
fc36a67e | 6758 | s++; |
02aa26ce NT |
6759 | |
6760 | /* check for <$fh> | |
6761 | Remember, only scalar variables are interpreted as filehandles by | |
6762 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6763 | treated as a glob() call. | |
6764 | This code makes use of the fact that except for the $ at the front, | |
6765 | a scalar variable and a filehandle look the same. | |
6766 | */ | |
4633a7c4 | 6767 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6768 | |
6769 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6770 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6771 | d++; |
02aa26ce NT |
6772 | |
6773 | /* If we've tried to read what we allow filehandles to look like, and | |
6774 | there's still text left, then it must be a glob() and not a getline. | |
6775 | Use scan_str to pull out the stuff between the <> and treat it | |
6776 | as nothing more than a string. | |
6777 | */ | |
6778 | ||
3280af22 | 6779 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6780 | yylval.ival = OP_GLOB; |
6781 | set_csh(); | |
09bef843 | 6782 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6783 | if (!s) |
cea2e8a9 | 6784 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6785 | return s; |
6786 | } | |
395c3793 | 6787 | else { |
9b3023bc RGS |
6788 | bool readline_overriden = FALSE; |
6789 | GV *gv_readline = Nullgv; | |
6790 | GV **gvp; | |
02aa26ce | 6791 | /* we're in a filehandle read situation */ |
3280af22 | 6792 | d = PL_tokenbuf; |
02aa26ce NT |
6793 | |
6794 | /* turn <> into <ARGV> */ | |
79072805 LW |
6795 | if (!len) |
6796 | (void)strcpy(d,"ARGV"); | |
02aa26ce | 6797 | |
9b3023bc | 6798 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6799 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6800 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6801 | || |
ba979b31 | 6802 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6803 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6804 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
6805 | readline_overriden = TRUE; |
6806 | ||
02aa26ce NT |
6807 | /* if <$fh>, create the ops to turn the variable into a |
6808 | filehandle | |
6809 | */ | |
79072805 | 6810 | if (*d == '$') { |
a0d0e21e | 6811 | I32 tmp; |
02aa26ce NT |
6812 | |
6813 | /* try to find it in the pad for this block, otherwise find | |
6814 | add symbol table ops | |
6815 | */ | |
11343788 | 6816 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
dd2155a4 DM |
6817 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
6818 | SV *sym = sv_2mortal( | |
6819 | newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)),0)); | |
f558d5af JH |
6820 | sv_catpvn(sym, "::", 2); |
6821 | sv_catpv(sym, d+1); | |
6822 | d = SvPVX(sym); | |
6823 | goto intro_sym; | |
6824 | } | |
6825 | else { | |
6826 | OP *o = newOP(OP_PADSV, 0); | |
6827 | o->op_targ = tmp; | |
9b3023bc RGS |
6828 | PL_lex_op = readline_overriden |
6829 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6830 | append_elem(OP_LIST, o, | |
6831 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
6832 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 6833 | } |
a0d0e21e LW |
6834 | } |
6835 | else { | |
f558d5af JH |
6836 | GV *gv; |
6837 | ++d; | |
6838 | intro_sym: | |
6839 | gv = gv_fetchpv(d, | |
6840 | (PL_in_eval | |
6841 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 6842 | : GV_ADDMULTI), |
f558d5af | 6843 | SVt_PV); |
9b3023bc RGS |
6844 | PL_lex_op = readline_overriden |
6845 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6846 | append_elem(OP_LIST, | |
6847 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
6848 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6849 | : (OP*)newUNOP(OP_READLINE, 0, | |
6850 | newUNOP(OP_RV2SV, 0, | |
6851 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 6852 | } |
7c6fadd6 RGS |
6853 | if (!readline_overriden) |
6854 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
f5284f61 | 6855 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ |
79072805 LW |
6856 | yylval.ival = OP_NULL; |
6857 | } | |
02aa26ce NT |
6858 | |
6859 | /* If it's none of the above, it must be a literal filehandle | |
6860 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6861 | else { |
85e6fe83 | 6862 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
6863 | PL_lex_op = readline_overriden |
6864 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6865 | append_elem(OP_LIST, | |
6866 | newGVOP(OP_GV, 0, gv), | |
6867 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6868 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
6869 | yylval.ival = OP_NULL; |
6870 | } | |
6871 | } | |
02aa26ce | 6872 | |
79072805 LW |
6873 | return s; |
6874 | } | |
6875 | ||
02aa26ce NT |
6876 | |
6877 | /* scan_str | |
6878 | takes: start position in buffer | |
09bef843 SB |
6879 | keep_quoted preserve \ on the embedded delimiter(s) |
6880 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6881 | returns: position to continue reading from buffer |
6882 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6883 | updates the read buffer. | |
6884 | ||
6885 | This subroutine pulls a string out of the input. It is called for: | |
6886 | q single quotes q(literal text) | |
6887 | ' single quotes 'literal text' | |
6888 | qq double quotes qq(interpolate $here please) | |
6889 | " double quotes "interpolate $here please" | |
6890 | qx backticks qx(/bin/ls -l) | |
6891 | ` backticks `/bin/ls -l` | |
6892 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6893 | m// regexp match m/this/ | |
6894 | s/// regexp substitute s/this/that/ | |
6895 | tr/// string transliterate tr/this/that/ | |
6896 | y/// string transliterate y/this/that/ | |
6897 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6898 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6899 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6900 | ||
6901 | In most of these cases (all but <>, patterns and transliterate) | |
6902 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6903 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6904 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6905 | calls scan_str(). | |
4e553d73 | 6906 | |
02aa26ce NT |
6907 | It skips whitespace before the string starts, and treats the first |
6908 | character as the delimiter. If the delimiter is one of ([{< then | |
6909 | the corresponding "close" character )]}> is used as the closing | |
6910 | delimiter. It allows quoting of delimiters, and if the string has | |
6911 | balanced delimiters ([{<>}]) it allows nesting. | |
6912 | ||
37fd879b HS |
6913 | On success, the SV with the resulting string is put into lex_stuff or, |
6914 | if that is already non-NULL, into lex_repl. The second case occurs only | |
6915 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
6916 | For convenience, the terminating delimiter character is stuffed into | |
6917 | SvIVX of the SV. | |
02aa26ce NT |
6918 | */ |
6919 | ||
76e3520e | 6920 | STATIC char * |
09bef843 | 6921 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6922 | { |
02aa26ce NT |
6923 | SV *sv; /* scalar value: string */ |
6924 | char *tmps; /* temp string, used for delimiter matching */ | |
6925 | register char *s = start; /* current position in the buffer */ | |
6926 | register char term; /* terminating character */ | |
6927 | register char *to; /* current position in the sv's data */ | |
6928 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 6929 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e IH |
6930 | I32 termcode; /* terminating char. code */ |
6931 | U8 termstr[UTF8_MAXLEN]; /* terminating string */ | |
6932 | STRLEN termlen; /* length of terminating string */ | |
6933 | char *last = NULL; /* last position for nesting bracket */ | |
02aa26ce NT |
6934 | |
6935 | /* skip space before the delimiter */ | |
fb73857a | 6936 | if (isSPACE(*s)) |
6937 | s = skipspace(s); | |
02aa26ce NT |
6938 | |
6939 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6940 | CLINE; |
02aa26ce NT |
6941 | |
6942 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6943 | term = *s; |
220e2d4e IH |
6944 | if (!UTF) { |
6945 | termcode = termstr[0] = term; | |
6946 | termlen = 1; | |
6947 | } | |
6948 | else { | |
f3b9ce0f | 6949 | termcode = utf8_to_uvchr((U8*)s, &termlen); |
220e2d4e IH |
6950 | Copy(s, termstr, termlen, U8); |
6951 | if (!UTF8_IS_INVARIANT(term)) | |
6952 | has_utf8 = TRUE; | |
6953 | } | |
b1c7b182 | 6954 | |
02aa26ce | 6955 | /* mark where we are */ |
57843af0 | 6956 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6957 | PL_multi_open = term; |
02aa26ce NT |
6958 | |
6959 | /* find corresponding closing delimiter */ | |
93a17b20 | 6960 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
6961 | termcode = termstr[0] = term = tmps[5]; |
6962 | ||
3280af22 | 6963 | PL_multi_close = term; |
79072805 | 6964 | |
02aa26ce | 6965 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6966 | assuming. 79 is the SV's initial length. What a random number. */ |
6967 | sv = NEWSV(87,79); | |
ed6116ce | 6968 | sv_upgrade(sv, SVt_PVIV); |
220e2d4e | 6969 | SvIVX(sv) = termcode; |
a0d0e21e | 6970 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6971 | |
6972 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 6973 | if (keep_delims) |
220e2d4e IH |
6974 | sv_catpvn(sv, s, termlen); |
6975 | s += termlen; | |
93a17b20 | 6976 | for (;;) { |
220e2d4e IH |
6977 | if (PL_encoding && !UTF) { |
6978 | bool cont = TRUE; | |
6979 | ||
6980 | while (cont) { | |
6981 | int offset = s - SvPVX(PL_linestr); | |
6982 | bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, | |
f3b9ce0f | 6983 | &offset, (char*)termstr, termlen); |
220e2d4e IH |
6984 | char *ns = SvPVX(PL_linestr) + offset; |
6985 | char *svlast = SvEND(sv) - 1; | |
6986 | ||
6987 | for (; s < ns; s++) { | |
6988 | if (*s == '\n' && !PL_rsfp) | |
6989 | CopLINE_inc(PL_curcop); | |
6990 | } | |
6991 | if (!found) | |
6992 | goto read_more_line; | |
6993 | else { | |
6994 | /* handle quoted delimiters */ | |
52327caf | 6995 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
220e2d4e IH |
6996 | char *t; |
6997 | for (t = svlast-2; t >= SvPVX(sv) && *t == '\\';) | |
6998 | t--; | |
6999 | if ((svlast-1 - t) % 2) { | |
7000 | if (!keep_quoted) { | |
7001 | *(svlast-1) = term; | |
7002 | *svlast = '\0'; | |
7003 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7004 | } | |
7005 | continue; | |
7006 | } | |
7007 | } | |
7008 | if (PL_multi_open == PL_multi_close) { | |
7009 | cont = FALSE; | |
7010 | } | |
7011 | else { | |
7012 | char *t, *w; | |
7013 | if (!last) | |
7014 | last = SvPVX(sv); | |
7015 | for (w = t = last; t < svlast; w++, t++) { | |
7016 | /* At here, all closes are "was quoted" one, | |
7017 | so we don't check PL_multi_close. */ | |
7018 | if (*t == '\\') { | |
7019 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
7020 | t++; | |
7021 | else | |
7022 | *w++ = *t++; | |
7023 | } | |
7024 | else if (*t == PL_multi_open) | |
7025 | brackets++; | |
7026 | ||
7027 | *w = *t; | |
7028 | } | |
7029 | if (w < t) { | |
7030 | *w++ = term; | |
7031 | *w = '\0'; | |
7032 | SvCUR_set(sv, w - SvPVX(sv)); | |
7033 | } | |
7034 | last = w; | |
7035 | if (--brackets <= 0) | |
7036 | cont = FALSE; | |
7037 | } | |
7038 | } | |
7039 | } | |
7040 | if (!keep_delims) { | |
7041 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7042 | *SvEND(sv) = '\0'; | |
7043 | } | |
7044 | break; | |
7045 | } | |
7046 | ||
02aa26ce | 7047 | /* extend sv if need be */ |
3280af22 | 7048 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 7049 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 7050 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 7051 | |
02aa26ce | 7052 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
7053 | if (PL_multi_open == PL_multi_close) { |
7054 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 7055 | /* embedded newlines increment the current line number */ |
3280af22 | 7056 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7057 | CopLINE_inc(PL_curcop); |
02aa26ce | 7058 | /* handle quoted delimiters */ |
3280af22 | 7059 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 7060 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 7061 | s++; |
02aa26ce | 7062 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
7063 | else |
7064 | *to++ = *s++; | |
7065 | } | |
02aa26ce NT |
7066 | /* terminate when run out of buffer (the for() condition), or |
7067 | have found the terminator */ | |
220e2d4e IH |
7068 | else if (*s == term) { |
7069 | if (termlen == 1) | |
7070 | break; | |
f3b9ce0f | 7071 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
7072 | break; |
7073 | } | |
63cd0674 | 7074 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7075 | has_utf8 = TRUE; |
93a17b20 LW |
7076 | *to = *s; |
7077 | } | |
7078 | } | |
02aa26ce NT |
7079 | |
7080 | /* if the terminator isn't the same as the start character (e.g., | |
7081 | matched brackets), we have to allow more in the quoting, and | |
7082 | be prepared for nested brackets. | |
7083 | */ | |
93a17b20 | 7084 | else { |
02aa26ce | 7085 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 7086 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 7087 | /* embedded newlines increment the line count */ |
3280af22 | 7088 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7089 | CopLINE_inc(PL_curcop); |
02aa26ce | 7090 | /* backslashes can escape the open or closing characters */ |
3280af22 | 7091 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
7092 | if (!keep_quoted && |
7093 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
7094 | s++; |
7095 | else | |
7096 | *to++ = *s++; | |
7097 | } | |
02aa26ce | 7098 | /* allow nested opens and closes */ |
3280af22 | 7099 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 7100 | break; |
3280af22 | 7101 | else if (*s == PL_multi_open) |
93a17b20 | 7102 | brackets++; |
63cd0674 | 7103 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7104 | has_utf8 = TRUE; |
93a17b20 LW |
7105 | *to = *s; |
7106 | } | |
7107 | } | |
02aa26ce | 7108 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 7109 | *to = '\0'; |
463ee0b2 | 7110 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 7111 | |
02aa26ce NT |
7112 | /* |
7113 | * this next chunk reads more into the buffer if we're not done yet | |
7114 | */ | |
7115 | ||
b1c7b182 GS |
7116 | if (s < PL_bufend) |
7117 | break; /* handle case where we are done yet :-) */ | |
79072805 | 7118 | |
6a27c188 | 7119 | #ifndef PERL_STRICT_CR |
f63a84b2 | 7120 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
7121 | if ((to[-2] == '\r' && to[-1] == '\n') || |
7122 | (to[-2] == '\n' && to[-1] == '\r')) | |
7123 | { | |
f63a84b2 LW |
7124 | to[-2] = '\n'; |
7125 | to--; | |
7126 | SvCUR_set(sv, to - SvPVX(sv)); | |
7127 | } | |
7128 | else if (to[-1] == '\r') | |
7129 | to[-1] = '\n'; | |
7130 | } | |
7131 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
7132 | to[-1] = '\n'; | |
7133 | #endif | |
7134 | ||
220e2d4e | 7135 | read_more_line: |
02aa26ce NT |
7136 | /* if we're out of file, or a read fails, bail and reset the current |
7137 | line marker so we can report where the unterminated string began | |
7138 | */ | |
3280af22 NIS |
7139 | if (!PL_rsfp || |
7140 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 7141 | sv_free(sv); |
eb160463 | 7142 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
79072805 LW |
7143 | return Nullch; |
7144 | } | |
02aa26ce | 7145 | /* we read a line, so increment our line counter */ |
57843af0 | 7146 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 7147 | |
02aa26ce | 7148 | /* update debugger info */ |
3280af22 | 7149 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
7150 | SV *sv = NEWSV(88,0); |
7151 | ||
93a17b20 | 7152 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 7153 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
7154 | (void)SvIOK_on(sv); |
7155 | SvIVX(sv) = 0; | |
57843af0 | 7156 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 7157 | } |
a0ed51b3 | 7158 | |
3280af22 NIS |
7159 | /* having changed the buffer, we must update PL_bufend */ |
7160 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 7161 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 7162 | } |
4e553d73 | 7163 | |
02aa26ce NT |
7164 | /* at this point, we have successfully read the delimited string */ |
7165 | ||
220e2d4e IH |
7166 | if (!PL_encoding || UTF) { |
7167 | if (keep_delims) | |
7168 | sv_catpvn(sv, s, termlen); | |
7169 | s += termlen; | |
7170 | } | |
7171 | if (has_utf8 || PL_encoding) | |
b1c7b182 | 7172 | SvUTF8_on(sv); |
d0063567 | 7173 | |
57843af0 | 7174 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
7175 | |
7176 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
7177 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
7178 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 7179 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 7180 | } |
02aa26ce NT |
7181 | |
7182 | /* decide whether this is the first or second quoted string we've read | |
7183 | for this op | |
7184 | */ | |
4e553d73 | 7185 | |
3280af22 NIS |
7186 | if (PL_lex_stuff) |
7187 | PL_lex_repl = sv; | |
79072805 | 7188 | else |
3280af22 | 7189 | PL_lex_stuff = sv; |
378cc40b LW |
7190 | return s; |
7191 | } | |
7192 | ||
02aa26ce NT |
7193 | /* |
7194 | scan_num | |
7195 | takes: pointer to position in buffer | |
7196 | returns: pointer to new position in buffer | |
7197 | side-effects: builds ops for the constant in yylval.op | |
7198 | ||
7199 | Read a number in any of the formats that Perl accepts: | |
7200 | ||
7fd134d9 JH |
7201 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
7202 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
7203 | 0b[01](_?[01])* |
7204 | 0[0-7](_?[0-7])* | |
7205 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7206 | |
3280af22 | 7207 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7208 | thing it reads. |
7209 | ||
7210 | If it reads a number without a decimal point or an exponent, it will | |
7211 | try converting the number to an integer and see if it can do so | |
7212 | without loss of precision. | |
7213 | */ | |
4e553d73 | 7214 | |
378cc40b | 7215 | char * |
b73d6f50 | 7216 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7217 | { |
02aa26ce NT |
7218 | register char *s = start; /* current position in buffer */ |
7219 | register char *d; /* destination in temp buffer */ | |
7220 | register char *e; /* end of temp buffer */ | |
86554af2 | 7221 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7222 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7223 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7224 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7225 | static char number_too_long[] = "Number too long"; |
378cc40b | 7226 | |
02aa26ce NT |
7227 | /* We use the first character to decide what type of number this is */ |
7228 | ||
378cc40b | 7229 | switch (*s) { |
79072805 | 7230 | default: |
cea2e8a9 | 7231 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7232 | |
02aa26ce | 7233 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7234 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7235 | case '0': |
7236 | { | |
02aa26ce NT |
7237 | /* variables: |
7238 | u holds the "number so far" | |
4f19785b WSI |
7239 | shift the power of 2 of the base |
7240 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7241 | overflowed was the number more than we can hold? |
7242 | ||
7243 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7244 | we in octal/hex/binary?" indicator to disallow hex characters |
7245 | when in octal mode. | |
02aa26ce | 7246 | */ |
9e24b6e2 JH |
7247 | NV n = 0.0; |
7248 | UV u = 0; | |
79072805 | 7249 | I32 shift; |
9e24b6e2 | 7250 | bool overflowed = FALSE; |
61f33854 | 7251 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
9e24b6e2 JH |
7252 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
7253 | static char* bases[5] = { "", "binary", "", "octal", | |
7254 | "hexadecimal" }; | |
7255 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7256 | "Hexadecimal" }; | |
7257 | static char *maxima[5] = { "", | |
7258 | "0b11111111111111111111111111111111", | |
7259 | "", | |
893fe2c2 | 7260 | "037777777777", |
9e24b6e2 JH |
7261 | "0xffffffff" }; |
7262 | char *base, *Base, *max; | |
378cc40b | 7263 | |
02aa26ce | 7264 | /* check for hex */ |
378cc40b LW |
7265 | if (s[1] == 'x') { |
7266 | shift = 4; | |
7267 | s += 2; | |
61f33854 | 7268 | just_zero = FALSE; |
4f19785b WSI |
7269 | } else if (s[1] == 'b') { |
7270 | shift = 1; | |
7271 | s += 2; | |
61f33854 | 7272 | just_zero = FALSE; |
378cc40b | 7273 | } |
02aa26ce | 7274 | /* check for a decimal in disguise */ |
b78218b7 | 7275 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7276 | goto decimal; |
02aa26ce | 7277 | /* so it must be octal */ |
928753ea | 7278 | else { |
378cc40b | 7279 | shift = 3; |
928753ea JH |
7280 | s++; |
7281 | } | |
7282 | ||
7283 | if (*s == '_') { | |
7284 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7285 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7286 | "Misplaced _ in number"); |
7287 | lastub = s++; | |
7288 | } | |
9e24b6e2 JH |
7289 | |
7290 | base = bases[shift]; | |
7291 | Base = Bases[shift]; | |
7292 | max = maxima[shift]; | |
02aa26ce | 7293 | |
4f19785b | 7294 | /* read the rest of the number */ |
378cc40b | 7295 | for (;;) { |
9e24b6e2 | 7296 | /* x is used in the overflow test, |
893fe2c2 | 7297 | b is the digit we're adding on. */ |
9e24b6e2 | 7298 | UV x, b; |
55497cff | 7299 | |
378cc40b | 7300 | switch (*s) { |
02aa26ce NT |
7301 | |
7302 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7303 | default: |
7304 | goto out; | |
02aa26ce | 7305 | |
928753ea | 7306 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7307 | case '_': |
928753ea | 7308 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7309 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7310 | "Misplaced _ in number"); |
7311 | lastub = s++; | |
de3bb511 | 7312 | break; |
02aa26ce NT |
7313 | |
7314 | /* 8 and 9 are not octal */ | |
378cc40b | 7315 | case '8': case '9': |
4f19785b | 7316 | if (shift == 3) |
cea2e8a9 | 7317 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7318 | /* FALL THROUGH */ |
02aa26ce NT |
7319 | |
7320 | /* octal digits */ | |
4f19785b | 7321 | case '2': case '3': case '4': |
378cc40b | 7322 | case '5': case '6': case '7': |
4f19785b | 7323 | if (shift == 1) |
cea2e8a9 | 7324 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7325 | /* FALL THROUGH */ |
7326 | ||
7327 | case '0': case '1': | |
02aa26ce | 7328 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7329 | goto digit; |
02aa26ce NT |
7330 | |
7331 | /* hex digits */ | |
378cc40b LW |
7332 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7333 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7334 | /* make sure they said 0x */ |
378cc40b LW |
7335 | if (shift != 4) |
7336 | goto out; | |
55497cff | 7337 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7338 | |
7339 | /* Prepare to put the digit we have onto the end | |
7340 | of the number so far. We check for overflows. | |
7341 | */ | |
7342 | ||
55497cff | 7343 | digit: |
61f33854 | 7344 | just_zero = FALSE; |
9e24b6e2 JH |
7345 | if (!overflowed) { |
7346 | x = u << shift; /* make room for the digit */ | |
7347 | ||
7348 | if ((x >> shift) != u | |
7349 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7350 | overflowed = TRUE; |
7351 | n = (NV) u; | |
767a6a26 | 7352 | if (ckWARN_d(WARN_OVERFLOW)) |
9014280d | 7353 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), |
9e24b6e2 JH |
7354 | "Integer overflow in %s number", |
7355 | base); | |
7356 | } else | |
7357 | u = x | b; /* add the digit to the end */ | |
7358 | } | |
7359 | if (overflowed) { | |
7360 | n *= nvshift[shift]; | |
7361 | /* If an NV has not enough bits in its | |
7362 | * mantissa to represent an UV this summing of | |
7363 | * small low-order numbers is a waste of time | |
7364 | * (because the NV cannot preserve the | |
7365 | * low-order bits anyway): we could just | |
7366 | * remember when did we overflow and in the | |
7367 | * end just multiply n by the right | |
7368 | * amount. */ | |
7369 | n += (NV) b; | |
55497cff | 7370 | } |
378cc40b LW |
7371 | break; |
7372 | } | |
7373 | } | |
02aa26ce NT |
7374 | |
7375 | /* if we get here, we had success: make a scalar value from | |
7376 | the number. | |
7377 | */ | |
378cc40b | 7378 | out: |
928753ea JH |
7379 | |
7380 | /* final misplaced underbar check */ | |
7381 | if (s[-1] == '_') { | |
7382 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7383 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
7384 | } |
7385 | ||
79072805 | 7386 | sv = NEWSV(92,0); |
9e24b6e2 | 7387 | if (overflowed) { |
767a6a26 | 7388 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
9014280d | 7389 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7390 | "%s number > %s non-portable", |
7391 | Base, max); | |
7392 | sv_setnv(sv, n); | |
7393 | } | |
7394 | else { | |
15041a67 | 7395 | #if UVSIZE > 4 |
767a6a26 | 7396 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
9014280d | 7397 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7398 | "%s number > %s non-portable", |
7399 | Base, max); | |
2cc4c2dc | 7400 | #endif |
9e24b6e2 JH |
7401 | sv_setuv(sv, u); |
7402 | } | |
61f33854 RGS |
7403 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
7404 | sv = new_constant(start, s - start, "integer", | |
7405 | sv, Nullsv, NULL); | |
7406 | else if (PL_hints & HINT_NEW_BINARY) | |
b3ac6de7 | 7407 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7408 | } |
7409 | break; | |
02aa26ce NT |
7410 | |
7411 | /* | |
7412 | handle decimal numbers. | |
7413 | we're also sent here when we read a 0 as the first digit | |
7414 | */ | |
378cc40b LW |
7415 | case '1': case '2': case '3': case '4': case '5': |
7416 | case '6': case '7': case '8': case '9': case '.': | |
7417 | decimal: | |
3280af22 NIS |
7418 | d = PL_tokenbuf; |
7419 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7420 | floatit = FALSE; |
02aa26ce NT |
7421 | |
7422 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7423 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7424 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7425 | if -w is on |
7426 | */ | |
93a17b20 | 7427 | if (*s == '_') { |
928753ea | 7428 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7429 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7430 | "Misplaced _ in number"); |
7431 | lastub = s++; | |
93a17b20 | 7432 | } |
fc36a67e | 7433 | else { |
02aa26ce | 7434 | /* check for end of fixed-length buffer */ |
fc36a67e | 7435 | if (d >= e) |
cea2e8a9 | 7436 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7437 | /* if we're ok, copy the character */ |
378cc40b | 7438 | *d++ = *s++; |
fc36a67e | 7439 | } |
378cc40b | 7440 | } |
02aa26ce NT |
7441 | |
7442 | /* final misplaced underbar check */ | |
928753ea | 7443 | if (lastub && s == lastub + 1) { |
d008e5eb | 7444 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 7445 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 7446 | } |
02aa26ce NT |
7447 | |
7448 | /* read a decimal portion if there is one. avoid | |
7449 | 3..5 being interpreted as the number 3. followed | |
7450 | by .5 | |
7451 | */ | |
2f3197b3 | 7452 | if (*s == '.' && s[1] != '.') { |
79072805 | 7453 | floatit = TRUE; |
378cc40b | 7454 | *d++ = *s++; |
02aa26ce | 7455 | |
928753ea JH |
7456 | if (*s == '_') { |
7457 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7458 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7459 | "Misplaced _ in number"); |
7460 | lastub = s; | |
7461 | } | |
7462 | ||
7463 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7464 | */ |
fc36a67e | 7465 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7466 | /* fixed length buffer check */ |
fc36a67e | 7467 | if (d >= e) |
cea2e8a9 | 7468 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7469 | if (*s == '_') { |
7470 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
9014280d | 7471 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7472 | "Misplaced _ in number"); |
7473 | lastub = s; | |
7474 | } | |
7475 | else | |
fc36a67e | 7476 | *d++ = *s; |
378cc40b | 7477 | } |
928753ea JH |
7478 | /* fractional part ending in underbar? */ |
7479 | if (s[-1] == '_') { | |
7480 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7481 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7482 | "Misplaced _ in number"); |
7483 | } | |
dd629d5b GS |
7484 | if (*s == '.' && isDIGIT(s[1])) { |
7485 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7486 | s = start; |
dd629d5b GS |
7487 | goto vstring; |
7488 | } | |
378cc40b | 7489 | } |
02aa26ce NT |
7490 | |
7491 | /* read exponent part, if present */ | |
7fd134d9 | 7492 | if (*s && strchr("eE",*s) && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7493 | floatit = TRUE; |
7494 | s++; | |
02aa26ce NT |
7495 | |
7496 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7497 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7498 | |
7fd134d9 JH |
7499 | /* stray preinitial _ */ |
7500 | if (*s == '_') { | |
7501 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7502 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7503 | "Misplaced _ in number"); |
7504 | lastub = s++; | |
7505 | } | |
7506 | ||
02aa26ce | 7507 | /* allow positive or negative exponent */ |
378cc40b LW |
7508 | if (*s == '+' || *s == '-') |
7509 | *d++ = *s++; | |
02aa26ce | 7510 | |
7fd134d9 JH |
7511 | /* stray initial _ */ |
7512 | if (*s == '_') { | |
7513 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7514 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7515 | "Misplaced _ in number"); |
7516 | lastub = s++; | |
7517 | } | |
7518 | ||
7fd134d9 JH |
7519 | /* read digits of exponent */ |
7520 | while (isDIGIT(*s) || *s == '_') { | |
7521 | if (isDIGIT(*s)) { | |
7522 | if (d >= e) | |
7523 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7524 | *d++ = *s++; |
7fd134d9 JH |
7525 | } |
7526 | else { | |
7527 | if (ckWARN(WARN_SYNTAX) && | |
7528 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7529 | (!isDIGIT(s[1]) && s[1] != '_'))) |
9014280d | 7530 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 | 7531 | "Misplaced _ in number"); |
b3b48e3e | 7532 | lastub = s++; |
7fd134d9 | 7533 | } |
7fd134d9 | 7534 | } |
378cc40b | 7535 | } |
02aa26ce | 7536 | |
02aa26ce NT |
7537 | |
7538 | /* make an sv from the string */ | |
79072805 | 7539 | sv = NEWSV(92,0); |
097ee67d | 7540 | |
0b7fceb9 | 7541 | /* |
58bb9ec3 NC |
7542 | We try to do an integer conversion first if no characters |
7543 | indicating "float" have been found. | |
0b7fceb9 MU |
7544 | */ |
7545 | ||
7546 | if (!floatit) { | |
58bb9ec3 NC |
7547 | UV uv; |
7548 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7549 | ||
7550 | if (flags == IS_NUMBER_IN_UV) { | |
7551 | if (uv <= IV_MAX) | |
86554af2 | 7552 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7553 | else |
c239479b | 7554 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7555 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7556 | if (uv <= (UV) IV_MIN) | |
7557 | sv_setiv(sv, -(IV)uv); | |
7558 | else | |
7559 | floatit = TRUE; | |
7560 | } else | |
7561 | floatit = TRUE; | |
7562 | } | |
0b7fceb9 | 7563 | if (floatit) { |
58bb9ec3 NC |
7564 | /* terminate the string */ |
7565 | *d = '\0'; | |
86554af2 JH |
7566 | nv = Atof(PL_tokenbuf); |
7567 | sv_setnv(sv, nv); | |
7568 | } | |
86554af2 | 7569 | |
b8403495 JH |
7570 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7571 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7572 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7573 | (floatit ? "float" : "integer"), |
7574 | sv, Nullsv, NULL); | |
378cc40b | 7575 | break; |
0b7fceb9 | 7576 | |
e312add1 | 7577 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7578 | case 'v': |
dd629d5b | 7579 | vstring: |
f4758303 | 7580 | sv = NEWSV(92,5); /* preallocate storage space */ |
b0f01acb | 7581 | s = scan_vstring(s,sv); |
a7cb1f99 | 7582 | break; |
79072805 | 7583 | } |
a687059c | 7584 | |
02aa26ce NT |
7585 | /* make the op for the constant and return */ |
7586 | ||
a86a20aa | 7587 | if (sv) |
b73d6f50 | 7588 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7589 | else |
b73d6f50 | 7590 | lvalp->opval = Nullop; |
a687059c | 7591 | |
378cc40b LW |
7592 | return s; |
7593 | } | |
7594 | ||
76e3520e | 7595 | STATIC char * |
cea2e8a9 | 7596 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7597 | { |
79072805 | 7598 | register char *eol; |
378cc40b | 7599 | register char *t; |
79cb57f6 | 7600 | SV *stuff = newSVpvn("",0); |
79072805 | 7601 | bool needargs = FALSE; |
c5ee2135 | 7602 | bool eofmt = FALSE; |
378cc40b | 7603 | |
79072805 | 7604 | while (!needargs) { |
a1b95068 | 7605 | if (*s == '.') { |
79072805 | 7606 | /*SUPPRESS 530*/ |
51882d45 | 7607 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7608 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7609 | #else |
bf4acbe4 | 7610 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7611 | #endif |
c5ee2135 WL |
7612 | if (*t == '\n' || t == PL_bufend) { |
7613 | eofmt = TRUE; | |
79072805 | 7614 | break; |
c5ee2135 | 7615 | } |
79072805 | 7616 | } |
3280af22 | 7617 | if (PL_in_eval && !PL_rsfp) { |
a1b95068 | 7618 | eol = memchr(s,'\n',PL_bufend-s); |
0f85fab0 | 7619 | if (!eol++) |
3280af22 | 7620 | eol = PL_bufend; |
0f85fab0 LW |
7621 | } |
7622 | else | |
3280af22 | 7623 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7624 | if (*s != '#') { |
a0d0e21e LW |
7625 | for (t = s; t < eol; t++) { |
7626 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7627 | needargs = FALSE; | |
7628 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7629 | } |
a0d0e21e LW |
7630 | if (*t == '@' || *t == '^') |
7631 | needargs = TRUE; | |
378cc40b | 7632 | } |
7121b347 MG |
7633 | if (eol > s) { |
7634 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7635 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7636 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7637 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7638 | end[-2] = '\n'; | |
7639 | end[-1] = '\0'; | |
7640 | SvCUR(stuff)--; | |
7641 | } | |
2dc4c65b | 7642 | #endif |
7121b347 MG |
7643 | } |
7644 | else | |
7645 | break; | |
79072805 LW |
7646 | } |
7647 | s = eol; | |
3280af22 NIS |
7648 | if (PL_rsfp) { |
7649 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7650 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7651 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7652 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7653 | if (!s) { |
3280af22 | 7654 | s = PL_bufptr; |
378cc40b LW |
7655 | break; |
7656 | } | |
378cc40b | 7657 | } |
463ee0b2 | 7658 | incline(s); |
79072805 | 7659 | } |
a0d0e21e LW |
7660 | enough: |
7661 | if (SvCUR(stuff)) { | |
3280af22 | 7662 | PL_expect = XTERM; |
79072805 | 7663 | if (needargs) { |
3280af22 NIS |
7664 | PL_lex_state = LEX_NORMAL; |
7665 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7666 | force_next(','); |
7667 | } | |
a0d0e21e | 7668 | else |
3280af22 | 7669 | PL_lex_state = LEX_FORMLINE; |
1bd51a4c IH |
7670 | if (!IN_BYTES) { |
7671 | if (UTF && is_utf8_string((U8*)SvPVX(stuff), SvCUR(stuff))) | |
7672 | SvUTF8_on(stuff); | |
7673 | else if (PL_encoding) | |
7674 | sv_recode_to_utf8(stuff, PL_encoding); | |
7675 | } | |
3280af22 | 7676 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 7677 | force_next(THING); |
3280af22 | 7678 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7679 | force_next(LSTOP); |
378cc40b | 7680 | } |
79072805 | 7681 | else { |
8990e307 | 7682 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
7683 | if (eofmt) |
7684 | PL_lex_formbrack = 0; | |
3280af22 | 7685 | PL_bufptr = s; |
79072805 LW |
7686 | } |
7687 | return s; | |
378cc40b | 7688 | } |
a687059c | 7689 | |
76e3520e | 7690 | STATIC void |
cea2e8a9 | 7691 | S_set_csh(pTHX) |
a687059c | 7692 | { |
ae986130 | 7693 | #ifdef CSH |
3280af22 NIS |
7694 | if (!PL_cshlen) |
7695 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7696 | #endif |
a687059c | 7697 | } |
463ee0b2 | 7698 | |
ba6d6ac9 | 7699 | I32 |
864dbfa3 | 7700 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7701 | { |
3280af22 NIS |
7702 | I32 oldsavestack_ix = PL_savestack_ix; |
7703 | CV* outsidecv = PL_compcv; | |
8990e307 | 7704 | |
3280af22 NIS |
7705 | if (PL_compcv) { |
7706 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7707 | } |
7766f137 | 7708 | SAVEI32(PL_subline); |
3280af22 | 7709 | save_item(PL_subname); |
3280af22 | 7710 | SAVESPTR(PL_compcv); |
3280af22 NIS |
7711 | |
7712 | PL_compcv = (CV*)NEWSV(1104,0); | |
7713 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7714 | CvFLAGS(PL_compcv) |= flags; | |
7715 | ||
57843af0 | 7716 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 7717 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
3280af22 | 7718 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); |
a3985cdc | 7719 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
748a9306 | 7720 | |
8990e307 LW |
7721 | return oldsavestack_ix; |
7722 | } | |
7723 | ||
084592ab CN |
7724 | #ifdef __SC__ |
7725 | #pragma segment Perl_yylex | |
7726 | #endif | |
8990e307 | 7727 | int |
864dbfa3 | 7728 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7729 | { |
faef0170 | 7730 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7731 | yyerror(s); |
faef0170 | 7732 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7733 | return 0; |
8990e307 LW |
7734 | } |
7735 | ||
7736 | int | |
864dbfa3 | 7737 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7738 | { |
68dc0745 | 7739 | char *where = NULL; |
7740 | char *context = NULL; | |
7741 | int contlen = -1; | |
46fc3d4c | 7742 | SV *msg; |
463ee0b2 | 7743 | |
3280af22 | 7744 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7745 | where = "at EOF"; |
3280af22 NIS |
7746 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7747 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7748 | /* |
7749 | Only for NetWare: | |
7750 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7751 | when the script has error such as not having the closing quotes like: | |
7752 | if ($var eq "value) | |
7753 | Checking of white spaces is anyway done in NetWare code. | |
7754 | */ | |
7755 | #ifndef NETWARE | |
3280af22 NIS |
7756 | while (isSPACE(*PL_oldoldbufptr)) |
7757 | PL_oldoldbufptr++; | |
f355267c | 7758 | #endif |
3280af22 NIS |
7759 | context = PL_oldoldbufptr; |
7760 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7761 | } |
3280af22 NIS |
7762 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7763 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7764 | /* |
7765 | Only for NetWare: | |
7766 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7767 | when the script has error such as not having the closing quotes like: | |
7768 | if ($var eq "value) | |
7769 | Checking of white spaces is anyway done in NetWare code. | |
7770 | */ | |
7771 | #ifndef NETWARE | |
3280af22 NIS |
7772 | while (isSPACE(*PL_oldbufptr)) |
7773 | PL_oldbufptr++; | |
f355267c | 7774 | #endif |
3280af22 NIS |
7775 | context = PL_oldbufptr; |
7776 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7777 | } |
7778 | else if (yychar > 255) | |
68dc0745 | 7779 | where = "next token ???"; |
12fbd33b | 7780 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
7781 | if (PL_lex_state == LEX_NORMAL || |
7782 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7783 | where = "at end of line"; |
3280af22 | 7784 | else if (PL_lex_inpat) |
68dc0745 | 7785 | where = "within pattern"; |
463ee0b2 | 7786 | else |
68dc0745 | 7787 | where = "within string"; |
463ee0b2 | 7788 | } |
46fc3d4c | 7789 | else { |
79cb57f6 | 7790 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7791 | if (yychar < 32) |
cea2e8a9 | 7792 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7793 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7794 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7795 | else |
cea2e8a9 | 7796 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7797 | where = SvPVX(where_sv); |
463ee0b2 | 7798 | } |
46fc3d4c | 7799 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 7800 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 7801 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 7802 | if (context) |
cea2e8a9 | 7803 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7804 | else |
cea2e8a9 | 7805 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7806 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7807 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7808 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7809 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7810 | PL_multi_end = 0; |
a0d0e21e | 7811 | } |
56da5a46 RGS |
7812 | if (PL_in_eval & EVAL_WARNONLY && ckWARN_d(WARN_SYNTAX)) |
7813 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, msg); | |
463ee0b2 | 7814 | else |
5a844595 | 7815 | qerror(msg); |
c7d6bfb2 GS |
7816 | if (PL_error_count >= 10) { |
7817 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 7818 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
248c2a4d | 7819 | ERRSV, OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
7820 | else |
7821 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 7822 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 7823 | } |
3280af22 NIS |
7824 | PL_in_my = 0; |
7825 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7826 | return 0; |
7827 | } | |
084592ab CN |
7828 | #ifdef __SC__ |
7829 | #pragma segment Main | |
7830 | #endif | |
4e35701f | 7831 | |
b250498f | 7832 | STATIC char* |
3ae08724 | 7833 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 7834 | { |
b250498f GS |
7835 | STRLEN slen; |
7836 | slen = SvCUR(PL_linestr); | |
7837 | switch (*s) { | |
4e553d73 NIS |
7838 | case 0xFF: |
7839 | if (s[1] == 0xFE) { | |
01ec43d0 | 7840 | /* UTF-16 little-endian */ |
3ae08724 | 7841 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
01ec43d0 GS |
7842 | Perl_croak(aTHX_ "Unsupported script encoding"); |
7843 | #ifndef PERL_NO_UTF16_FILTER | |
dea0fc0b | 7844 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-LE script encoding\n")); |
3ae08724 | 7845 | s += 2; |
dea0fc0b JH |
7846 | if (PL_bufend > (char*)s) { |
7847 | U8 *news; | |
7848 | I32 newlen; | |
7849 | ||
7850 | filter_add(utf16rev_textfilter, NULL); | |
7851 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
f72f5f89 JH |
7852 | PL_bufend = (char*)utf16_to_utf8_reversed(s, news, |
7853 | PL_bufend - (char*)s - 1, | |
dea0fc0b JH |
7854 | &newlen); |
7855 | Copy(news, s, newlen, U8); | |
7856 | SvCUR_set(PL_linestr, newlen); | |
7857 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7858 | news[newlen++] = '\0'; | |
7859 | Safefree(news); | |
7860 | } | |
b250498f | 7861 | #else |
01ec43d0 | 7862 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7863 | #endif |
01ec43d0 GS |
7864 | } |
7865 | break; | |
78ae23f5 | 7866 | case 0xFE: |
3ae08724 | 7867 | if (s[1] == 0xFF) { /* UTF-16 big-endian */ |
01ec43d0 | 7868 | #ifndef PERL_NO_UTF16_FILTER |
dea0fc0b JH |
7869 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding\n")); |
7870 | s += 2; | |
7871 | if (PL_bufend > (char *)s) { | |
7872 | U8 *news; | |
7873 | I32 newlen; | |
7874 | ||
7875 | filter_add(utf16_textfilter, NULL); | |
7876 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
7877 | PL_bufend = (char*)utf16_to_utf8(s, news, | |
7878 | PL_bufend - (char*)s, | |
7879 | &newlen); | |
7880 | Copy(news, s, newlen, U8); | |
7881 | SvCUR_set(PL_linestr, newlen); | |
7882 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7883 | news[newlen++] = '\0'; | |
7884 | Safefree(news); | |
7885 | } | |
b250498f | 7886 | #else |
01ec43d0 | 7887 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7888 | #endif |
01ec43d0 GS |
7889 | } |
7890 | break; | |
3ae08724 GS |
7891 | case 0xEF: |
7892 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
dea0fc0b | 7893 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-8 script encoding\n")); |
01ec43d0 GS |
7894 | s += 3; /* UTF-8 */ |
7895 | } | |
7896 | break; | |
7897 | case 0: | |
7898 | if (slen > 3 && s[1] == 0 && /* UTF-32 big-endian */ | |
3ae08724 | 7899 | s[2] == 0xFE && s[3] == 0xFF) |
01ec43d0 GS |
7900 | { |
7901 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7902 | } | |
7903 | } | |
b8f84bb2 | 7904 | return (char*)s; |
b250498f | 7905 | } |
4755096e | 7906 | |
4755096e GS |
7907 | /* |
7908 | * restore_rsfp | |
7909 | * Restore a source filter. | |
7910 | */ | |
7911 | ||
7912 | static void | |
acfe0abc | 7913 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
7914 | { |
7915 | PerlIO *fp = (PerlIO*)f; | |
7916 | ||
7917 | if (PL_rsfp == PerlIO_stdin()) | |
7918 | PerlIO_clearerr(PL_rsfp); | |
7919 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7920 | PerlIO_close(PL_rsfp); | |
7921 | PL_rsfp = fp; | |
7922 | } | |
6e3aabd6 GS |
7923 | |
7924 | #ifndef PERL_NO_UTF16_FILTER | |
7925 | static I32 | |
acfe0abc | 7926 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7927 | { |
7928 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7929 | if (count) { | |
7930 | U8* tmps; | |
7931 | U8* tend; | |
dea0fc0b | 7932 | I32 newlen; |
6e3aabd6 | 7933 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
f72f5f89 JH |
7934 | if (!*SvPV_nolen(sv)) |
7935 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7936 | return count; | |
4e553d73 | 7937 | |
dea0fc0b | 7938 | tend = utf16_to_utf8((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7939 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7940 | } | |
7941 | return count; | |
7942 | } | |
7943 | ||
7944 | static I32 | |
acfe0abc | 7945 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7946 | { |
7947 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7948 | if (count) { | |
7949 | U8* tmps; | |
7950 | U8* tend; | |
dea0fc0b | 7951 | I32 newlen; |
f72f5f89 JH |
7952 | if (!*SvPV_nolen(sv)) |
7953 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7954 | return count; | |
7955 | ||
6e3aabd6 | 7956 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
dea0fc0b | 7957 | tend = utf16_to_utf8_reversed((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7958 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7959 | } | |
7960 | return count; | |
7961 | } | |
7962 | #endif | |
9f4817db | 7963 | |
f333445c JP |
7964 | /* |
7965 | Returns a pointer to the next character after the parsed | |
7966 | vstring, as well as updating the passed in sv. | |
7967 | ||
7968 | Function must be called like | |
7969 | ||
7970 | sv = NEWSV(92,5); | |
7971 | s = scan_vstring(s,sv); | |
7972 | ||
7973 | The sv should already be large enough to store the vstring | |
7974 | passed in, for performance reasons. | |
7975 | ||
7976 | */ | |
7977 | ||
7978 | char * | |
7979 | Perl_scan_vstring(pTHX_ char *s, SV *sv) | |
7980 | { | |
7981 | char *pos = s; | |
7982 | char *start = s; | |
7983 | if (*pos == 'v') pos++; /* get past 'v' */ | |
3e884cbf JH |
7984 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
7985 | pos++; | |
f333445c JP |
7986 | if ( *pos != '.') { |
7987 | /* this may not be a v-string if followed by => */ | |
8fc7bb1c SM |
7988 | char *next = pos; |
7989 | while (next < PL_bufend && isSPACE(*next)) | |
7990 | ++next; | |
7991 | if ((PL_bufend - next) >= 2 && *next == '=' && next[1] == '>' ) { | |
f333445c JP |
7992 | /* return string not v-string */ |
7993 | sv_setpvn(sv,(char *)s,pos-s); | |
7994 | return pos; | |
7995 | } | |
7996 | } | |
7997 | ||
7998 | if (!isALPHA(*pos)) { | |
7999 | UV rev; | |
8000 | U8 tmpbuf[UTF8_MAXLEN+1]; | |
8001 | U8 *tmpend; | |
8002 | ||
8003 | if (*s == 'v') s++; /* get past 'v' */ | |
8004 | ||
8005 | sv_setpvn(sv, "", 0); | |
8006 | ||
8007 | for (;;) { | |
8008 | rev = 0; | |
8009 | { | |
8010 | /* this is atoi() that tolerates underscores */ | |
8011 | char *end = pos; | |
8012 | UV mult = 1; | |
8013 | while (--end >= s) { | |
8014 | UV orev; | |
8015 | if (*end == '_') | |
8016 | continue; | |
8017 | orev = rev; | |
8018 | rev += (*end - '0') * mult; | |
8019 | mult *= 10; | |
8020 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
8021 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
8022 | "Integer overflow in decimal number"); | |
8023 | } | |
8024 | } | |
8025 | #ifdef EBCDIC | |
8026 | if (rev > 0x7FFFFFFF) | |
8027 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
8028 | #endif | |
8029 | /* Append native character for the rev point */ | |
8030 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
8031 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
8032 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
8033 | SvUTF8_on(sv); | |
3e884cbf | 8034 | if (pos + 1 < PL_bufend && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
8035 | s = ++pos; |
8036 | else { | |
8037 | s = pos; | |
8038 | break; | |
8039 | } | |
3e884cbf | 8040 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
8041 | pos++; |
8042 | } | |
8043 | SvPOK_on(sv); | |
8044 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
8045 | SvRMAGICAL_on(sv); | |
8046 | } | |
8047 | return s; | |
8048 | } | |
8049 |