Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4bb101f2 JH |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, 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 | |
d3b6f988 GS |
26 | #define yychar PL_yychar |
27 | #define yylval PL_yylval | |
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 | ||
a1a0e61e | 82 | #ifdef USE_PURE_BISON |
dba4d153 JH |
83 | # ifndef YYMAXLEVEL |
84 | # define YYMAXLEVEL 100 | |
85 | # endif | |
20141f0e IRC |
86 | YYSTYPE* yylval_pointer[YYMAXLEVEL]; |
87 | int* yychar_pointer[YYMAXLEVEL]; | |
6f202aea | 88 | int yyactlevel = -1; |
22c35a8c GS |
89 | # undef yylval |
90 | # undef yychar | |
20141f0e IRC |
91 | # define yylval (*yylval_pointer[yyactlevel]) |
92 | # define yychar (*yychar_pointer[yyactlevel]) | |
93 | # define PERL_YYLEX_PARAM yylval_pointer[yyactlevel],yychar_pointer[yyactlevel] | |
4e553d73 | 94 | # undef yylex |
dba4d153 | 95 | # define yylex() Perl_yylex_r(aTHX_ yylval_pointer[yyactlevel],yychar_pointer[yyactlevel]) |
a1a0e61e TD |
96 | #endif |
97 | ||
79072805 | 98 | #include "keywords.h" |
fe14fcc3 | 99 | |
ffb4593c NT |
100 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
101 | ||
ae986130 LW |
102 | #ifdef CLINE |
103 | #undef CLINE | |
104 | #endif | |
57843af0 | 105 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 106 | |
ffb4593c NT |
107 | /* |
108 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 109 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
110 | * |
111 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
112 | * OPERATOR : generic operator | |
113 | * AOPERATOR : assignment operator | |
114 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
115 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
116 | * PREREF : *EXPR where EXPR is not a simple identifier | |
117 | * TERM : expression term | |
118 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
119 | * FTST : file test operator | |
120 | * FUN0 : zero-argument function | |
2d2e263d | 121 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
122 | * BOop : bitwise or or xor |
123 | * BAop : bitwise and | |
124 | * SHop : shift operator | |
125 | * PWop : power operator | |
9cbb5ea2 | 126 | * PMop : pattern-matching operator |
ffb4593c NT |
127 | * Aop : addition-level operator |
128 | * Mop : multiplication-level operator | |
129 | * Eop : equality-testing operator | |
e5edeb50 | 130 | * Rop : relational operator <= != gt |
ffb4593c NT |
131 | * |
132 | * Also see LOP and lop() below. | |
133 | */ | |
134 | ||
075953c3 JH |
135 | /* Note that REPORT() and REPORT2() will be expressions that supply |
136 | * their own trailing comma, not suitable for statements as such. */ | |
998054bd | 137 | #ifdef DEBUGGING /* Serve -DT. */ |
075953c3 JH |
138 | # define REPORT(x,retval) tokereport(x,s,(int)retval), |
139 | # define REPORT2(x,retval) tokereport(x,s, yylval.ival), | |
998054bd | 140 | #else |
075953c3 JH |
141 | # define REPORT(x,retval) |
142 | # define REPORT2(x,retval) | |
998054bd SC |
143 | #endif |
144 | ||
075953c3 JH |
145 | #define TOKEN(retval) return (REPORT2("token",retval) PL_bufptr = s,(int)retval) |
146 | #define OPERATOR(retval) return (REPORT2("operator",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval) | |
147 | #define AOPERATOR(retval) return ao((REPORT2("aop",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval)) | |
148 | #define PREBLOCK(retval) return (REPORT2("preblock",retval) PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
149 | #define PRETERMBLOCK(retval) return (REPORT2("pretermblock",retval) PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
150 | #define PREREF(retval) return (REPORT2("preref",retval) PL_expect = XREF,PL_bufptr = s,(int)retval) | |
151 | #define TERM(retval) return (CLINE, REPORT2("term",retval) PL_expect = XOPERATOR, PL_bufptr = s,(int)retval) | |
152 | #define LOOPX(f) return(yylval.ival=f, REPORT("loopx",f) PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
6f33ba73 | 153 | #define FTST(f) return(yylval.ival=f, REPORT("ftst",f) PL_expect = XTERMORDORDOR,PL_bufptr = s,(int)UNIOP) |
075953c3 JH |
154 | #define FUN0(f) return(yylval.ival = f, REPORT("fun0",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) |
155 | #define FUN1(f) return(yylval.ival = f, REPORT("fun1",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
156 | #define BOop(f) return ao((yylval.ival=f, REPORT("bitorop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
157 | #define BAop(f) return ao((yylval.ival=f, REPORT("bitandop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
158 | #define SHop(f) return ao((yylval.ival=f, REPORT("shiftop",f) PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
159 | #define PWop(f) return ao((yylval.ival=f, REPORT("powop",f) PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
160 | #define PMop(f) return(yylval.ival=f, REPORT("matchop",f) PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
161 | #define Aop(f) return ao((yylval.ival=f, REPORT("add",f) PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
162 | #define Mop(f) return ao((yylval.ival=f, REPORT("mul",f) PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
163 | #define Eop(f) return(yylval.ival=f, REPORT("eq",f) PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
164 | #define Rop(f) return(yylval.ival=f, REPORT("rel",f) PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 165 | |
a687059c LW |
166 | /* This bit of chicanery makes a unary function followed by |
167 | * a parenthesis into a function with one argument, highest precedence. | |
6f33ba73 RGS |
168 | * The UNIDOR macro is for unary functions that can be followed by the // |
169 | * operator (such as C<shift // 0>). | |
a687059c | 170 | */ |
6f33ba73 | 171 | #define UNI2(f,x) return(yylval.ival = f, \ |
075953c3 | 172 | REPORT("uni",f) \ |
6f33ba73 | 173 | PL_expect = x, \ |
3280af22 NIS |
174 | PL_bufptr = s, \ |
175 | PL_last_uni = PL_oldbufptr, \ | |
176 | PL_last_lop_op = f, \ | |
a687059c | 177 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
6f33ba73 RGS |
178 | #define UNI(f) UNI2(f,XTERM) |
179 | #define UNIDOR(f) UNI2(f,XTERMORDORDOR) | |
a687059c | 180 | |
79072805 | 181 | #define UNIBRACK(f) return(yylval.ival = f, \ |
075953c3 | 182 | REPORT("uni",f) \ |
3280af22 NIS |
183 | PL_bufptr = s, \ |
184 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
185 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
186 | ||
9f68db38 | 187 | /* grandfather return to old style */ |
3280af22 | 188 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 189 | |
8fa7f367 JH |
190 | #ifdef DEBUGGING |
191 | ||
2d00ba3b | 192 | STATIC void |
61b2116b | 193 | S_tokereport(pTHX_ char *thing, char* s, I32 rv) |
9041c2e3 | 194 | { |
998054bd | 195 | DEBUG_T({ |
9c5ffd7c | 196 | SV* report = newSVpv(thing, 0); |
29b291f7 RB |
197 | Perl_sv_catpvf(aTHX_ report, ":line %d:%"IVdf":", CopLINE(PL_curcop), |
198 | (IV)rv); | |
998054bd SC |
199 | |
200 | if (s - PL_bufptr > 0) | |
201 | sv_catpvn(report, PL_bufptr, s - PL_bufptr); | |
202 | else { | |
203 | if (PL_oldbufptr && *PL_oldbufptr) | |
204 | sv_catpv(report, PL_tokenbuf); | |
205 | } | |
206 | PerlIO_printf(Perl_debug_log, "### %s\n", SvPV_nolen(report)); | |
5f80b19c | 207 | }); |
998054bd SC |
208 | } |
209 | ||
8fa7f367 JH |
210 | #endif |
211 | ||
ffb4593c NT |
212 | /* |
213 | * S_ao | |
214 | * | |
c963b151 BD |
215 | * This subroutine detects &&=, ||=, and //= and turns an ANDAND, OROR or DORDOR |
216 | * into an OP_ANDASSIGN, OP_ORASSIGN, or OP_DORASSIGN | |
ffb4593c NT |
217 | */ |
218 | ||
76e3520e | 219 | STATIC int |
cea2e8a9 | 220 | S_ao(pTHX_ int toketype) |
a0d0e21e | 221 | { |
3280af22 NIS |
222 | if (*PL_bufptr == '=') { |
223 | PL_bufptr++; | |
a0d0e21e LW |
224 | if (toketype == ANDAND) |
225 | yylval.ival = OP_ANDASSIGN; | |
226 | else if (toketype == OROR) | |
227 | yylval.ival = OP_ORASSIGN; | |
c963b151 BD |
228 | else if (toketype == DORDOR) |
229 | yylval.ival = OP_DORASSIGN; | |
a0d0e21e LW |
230 | toketype = ASSIGNOP; |
231 | } | |
232 | return toketype; | |
233 | } | |
234 | ||
ffb4593c NT |
235 | /* |
236 | * S_no_op | |
237 | * When Perl expects an operator and finds something else, no_op | |
238 | * prints the warning. It always prints "<something> found where | |
239 | * operator expected. It prints "Missing semicolon on previous line?" | |
240 | * if the surprise occurs at the start of the line. "do you need to | |
241 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
242 | * where the compiler doesn't know if foo is a method call or a function. | |
243 | * It prints "Missing operator before end of line" if there's nothing | |
244 | * after the missing operator, or "... before <...>" if there is something | |
245 | * after the missing operator. | |
246 | */ | |
247 | ||
76e3520e | 248 | STATIC void |
cea2e8a9 | 249 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 250 | { |
3280af22 NIS |
251 | char *oldbp = PL_bufptr; |
252 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 253 | |
1189a94a GS |
254 | if (!s) |
255 | s = oldbp; | |
07c798fb | 256 | else |
1189a94a | 257 | PL_bufptr = s; |
cea2e8a9 | 258 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 259 | if (is_first) |
cea2e8a9 | 260 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 261 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 262 | char *t; |
7e2040f0 | 263 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 264 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 265 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 266 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 | 267 | } |
07c798fb HS |
268 | else { |
269 | assert(s >= oldbp); | |
cea2e8a9 | 270 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
07c798fb | 271 | } |
3280af22 | 272 | PL_bufptr = oldbp; |
8990e307 LW |
273 | } |
274 | ||
ffb4593c NT |
275 | /* |
276 | * S_missingterm | |
277 | * Complain about missing quote/regexp/heredoc terminator. | |
278 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
279 | * If we're in a delimited string and the delimiter is a control | |
280 | * character, it's reformatted into a two-char sequence like ^C. | |
281 | * This is fatal. | |
282 | */ | |
283 | ||
76e3520e | 284 | STATIC void |
cea2e8a9 | 285 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
286 | { |
287 | char tmpbuf[3]; | |
288 | char q; | |
289 | if (s) { | |
290 | char *nl = strrchr(s,'\n'); | |
d2719217 | 291 | if (nl) |
8990e307 LW |
292 | *nl = '\0'; |
293 | } | |
9d116dd7 JH |
294 | else if ( |
295 | #ifdef EBCDIC | |
296 | iscntrl(PL_multi_close) | |
297 | #else | |
298 | PL_multi_close < 32 || PL_multi_close == 127 | |
299 | #endif | |
300 | ) { | |
8990e307 | 301 | *tmpbuf = '^'; |
3280af22 | 302 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
303 | s = "\\n"; |
304 | tmpbuf[2] = '\0'; | |
305 | s = tmpbuf; | |
306 | } | |
307 | else { | |
eb160463 | 308 | *tmpbuf = (char)PL_multi_close; |
8990e307 LW |
309 | tmpbuf[1] = '\0'; |
310 | s = tmpbuf; | |
311 | } | |
312 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 313 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 314 | } |
79072805 | 315 | |
ffb4593c NT |
316 | /* |
317 | * Perl_deprecate | |
ffb4593c NT |
318 | */ |
319 | ||
79072805 | 320 | void |
864dbfa3 | 321 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 322 | { |
599cee73 | 323 | if (ckWARN(WARN_DEPRECATED)) |
9014280d | 324 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), "Use of %s is deprecated", s); |
a0d0e21e LW |
325 | } |
326 | ||
12bcd1a6 PM |
327 | void |
328 | Perl_deprecate_old(pTHX_ char *s) | |
329 | { | |
330 | /* This function should NOT be called for any new deprecated warnings */ | |
331 | /* Use Perl_deprecate instead */ | |
332 | /* */ | |
333 | /* It is here to maintain backward compatibility with the pre-5.8 */ | |
334 | /* warnings category hierarchy. The "deprecated" category used to */ | |
335 | /* live under the "syntax" category. It is now a top-level category */ | |
336 | /* in its own right. */ | |
337 | ||
338 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) | |
339 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
340 | "Use of %s is deprecated", s); | |
341 | } | |
342 | ||
ffb4593c NT |
343 | /* |
344 | * depcom | |
9cbb5ea2 | 345 | * Deprecate a comma-less variable list. |
ffb4593c NT |
346 | */ |
347 | ||
76e3520e | 348 | STATIC void |
cea2e8a9 | 349 | S_depcom(pTHX) |
a0d0e21e | 350 | { |
12bcd1a6 | 351 | deprecate_old("comma-less variable list"); |
a0d0e21e LW |
352 | } |
353 | ||
ffb4593c | 354 | /* |
9cbb5ea2 GS |
355 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
356 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
357 | */ |
358 | ||
c39cd008 GS |
359 | #ifdef PERL_CR_FILTER |
360 | static void | |
361 | strip_return(SV *sv) | |
362 | { | |
363 | register char *s = SvPVX(sv); | |
364 | register char *e = s + SvCUR(sv); | |
365 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
366 | while (s < e) { | |
367 | if (*s++ == '\r' && *s == '\n') { | |
368 | /* hit a CR-LF, need to copy the rest */ | |
369 | register char *d = s - 1; | |
370 | *d++ = *s++; | |
371 | while (s < e) { | |
372 | if (*s == '\r' && s[1] == '\n') | |
373 | s++; | |
374 | *d++ = *s++; | |
375 | } | |
376 | SvCUR(sv) -= s - d; | |
377 | return; | |
378 | } | |
379 | } | |
380 | } | |
a868473f | 381 | |
76e3520e | 382 | STATIC I32 |
c39cd008 | 383 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 384 | { |
c39cd008 GS |
385 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
386 | if (count > 0 && !maxlen) | |
387 | strip_return(sv); | |
388 | return count; | |
a868473f NIS |
389 | } |
390 | #endif | |
391 | ||
ffb4593c NT |
392 | /* |
393 | * Perl_lex_start | |
9cbb5ea2 GS |
394 | * Initialize variables. Uses the Perl save_stack to save its state (for |
395 | * recursive calls to the parser). | |
ffb4593c NT |
396 | */ |
397 | ||
a0d0e21e | 398 | void |
864dbfa3 | 399 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 400 | { |
8990e307 LW |
401 | char *s; |
402 | STRLEN len; | |
403 | ||
3280af22 NIS |
404 | SAVEI32(PL_lex_dojoin); |
405 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
406 | SAVEI32(PL_lex_casemods); |
407 | SAVEI32(PL_lex_starts); | |
408 | SAVEI32(PL_lex_state); | |
7766f137 | 409 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 410 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
411 | if (PL_lex_state == LEX_KNOWNEXT) { |
412 | I32 toke = PL_nexttoke; | |
413 | while (--toke >= 0) { | |
414 | SAVEI32(PL_nexttype[toke]); | |
415 | SAVEVPTR(PL_nextval[toke]); | |
416 | } | |
417 | SAVEI32(PL_nexttoke); | |
18b09519 | 418 | } |
57843af0 | 419 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
420 | SAVEPPTR(PL_bufptr); |
421 | SAVEPPTR(PL_bufend); | |
422 | SAVEPPTR(PL_oldbufptr); | |
423 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
424 | SAVEPPTR(PL_last_lop); |
425 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
426 | SAVEPPTR(PL_linestart); |
427 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
428 | SAVEGENERICPV(PL_lex_brackstack); |
429 | SAVEGENERICPV(PL_lex_casestack); | |
c76ac1ee | 430 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
431 | SAVESPTR(PL_lex_stuff); |
432 | SAVEI32(PL_lex_defer); | |
09bef843 | 433 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 434 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
435 | SAVEINT(PL_expect); |
436 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
437 | |
438 | PL_lex_state = LEX_NORMAL; | |
439 | PL_lex_defer = 0; | |
440 | PL_expect = XSTATE; | |
441 | PL_lex_brackets = 0; | |
3280af22 NIS |
442 | New(899, PL_lex_brackstack, 120, char); |
443 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
444 | PL_lex_casemods = 0; |
445 | *PL_lex_casestack = '\0'; | |
446 | PL_lex_dojoin = 0; | |
447 | PL_lex_starts = 0; | |
448 | PL_lex_stuff = Nullsv; | |
449 | PL_lex_repl = Nullsv; | |
450 | PL_lex_inpat = 0; | |
76be56bc | 451 | PL_nexttoke = 0; |
3280af22 | 452 | PL_lex_inwhat = 0; |
09bef843 | 453 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
454 | PL_linestr = line; |
455 | if (SvREADONLY(PL_linestr)) | |
456 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
457 | s = SvPV(PL_linestr, len); | |
6f27f9a7 | 458 | if (!len || s[len-1] != ';') { |
3280af22 NIS |
459 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
460 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
461 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 462 | } |
3280af22 NIS |
463 | SvTEMP_off(PL_linestr); |
464 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
465 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 466 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 467 | PL_rsfp = 0; |
79072805 | 468 | } |
a687059c | 469 | |
ffb4593c NT |
470 | /* |
471 | * Perl_lex_end | |
9cbb5ea2 GS |
472 | * Finalizer for lexing operations. Must be called when the parser is |
473 | * done with the lexer. | |
ffb4593c NT |
474 | */ |
475 | ||
463ee0b2 | 476 | void |
864dbfa3 | 477 | Perl_lex_end(pTHX) |
463ee0b2 | 478 | { |
3280af22 | 479 | PL_doextract = FALSE; |
463ee0b2 LW |
480 | } |
481 | ||
ffb4593c NT |
482 | /* |
483 | * S_incline | |
484 | * This subroutine has nothing to do with tilting, whether at windmills | |
485 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 486 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 487 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
488 | * # line 500 "foo.pm" |
489 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
490 | */ |
491 | ||
76e3520e | 492 | STATIC void |
cea2e8a9 | 493 | S_incline(pTHX_ char *s) |
463ee0b2 LW |
494 | { |
495 | char *t; | |
496 | char *n; | |
73659bf1 | 497 | char *e; |
463ee0b2 | 498 | char ch; |
463ee0b2 | 499 | |
57843af0 | 500 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
501 | if (*s++ != '#') |
502 | return; | |
bf4acbe4 | 503 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
504 | if (strnEQ(s, "line", 4)) |
505 | s += 4; | |
506 | else | |
507 | return; | |
084592ab | 508 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 509 | s++; |
4e553d73 | 510 | else |
73659bf1 | 511 | return; |
bf4acbe4 | 512 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
513 | if (!isDIGIT(*s)) |
514 | return; | |
515 | n = s; | |
516 | while (isDIGIT(*s)) | |
517 | s++; | |
bf4acbe4 | 518 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 519 | s++; |
73659bf1 | 520 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 521 | s++; |
73659bf1 GS |
522 | e = t + 1; |
523 | } | |
463ee0b2 | 524 | else { |
463ee0b2 | 525 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 526 | e = t; |
463ee0b2 | 527 | } |
bf4acbe4 | 528 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
529 | e++; |
530 | if (*e != '\n' && *e != '\0') | |
531 | return; /* false alarm */ | |
532 | ||
463ee0b2 LW |
533 | ch = *t; |
534 | *t = '\0'; | |
f4dd75d9 | 535 | if (t - s > 0) { |
05ec9bb3 | 536 | CopFILE_free(PL_curcop); |
57843af0 | 537 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 538 | } |
463ee0b2 | 539 | *t = ch; |
57843af0 | 540 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
541 | } |
542 | ||
ffb4593c NT |
543 | /* |
544 | * S_skipspace | |
545 | * Called to gobble the appropriate amount and type of whitespace. | |
546 | * Skips comments as well. | |
547 | */ | |
548 | ||
76e3520e | 549 | STATIC char * |
cea2e8a9 | 550 | S_skipspace(pTHX_ register char *s) |
a687059c | 551 | { |
3280af22 | 552 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 553 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
554 | s++; |
555 | return s; | |
556 | } | |
557 | for (;;) { | |
fd049845 | 558 | STRLEN prevlen; |
09bef843 | 559 | SSize_t oldprevlen, oldoldprevlen; |
9c5ffd7c | 560 | SSize_t oldloplen = 0, oldunilen = 0; |
60e6418e GS |
561 | while (s < PL_bufend && isSPACE(*s)) { |
562 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
563 | incline(s); | |
564 | } | |
ffb4593c NT |
565 | |
566 | /* comment */ | |
3280af22 NIS |
567 | if (s < PL_bufend && *s == '#') { |
568 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 569 | s++; |
60e6418e | 570 | if (s < PL_bufend) { |
463ee0b2 | 571 | s++; |
60e6418e GS |
572 | if (PL_in_eval && !PL_rsfp) { |
573 | incline(s); | |
574 | continue; | |
575 | } | |
576 | } | |
463ee0b2 | 577 | } |
ffb4593c NT |
578 | |
579 | /* only continue to recharge the buffer if we're at the end | |
580 | * of the buffer, we're not reading from a source filter, and | |
581 | * we're in normal lexing mode | |
582 | */ | |
09bef843 SB |
583 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
584 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 585 | return s; |
ffb4593c NT |
586 | |
587 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
588 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
589 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
590 | { | |
591 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
592 | if (PL_minus_n || PL_minus_p) { |
593 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
594 | ";}continue{print or die qq(-p destination: $!\\n)" : |
595 | ""); | |
3280af22 NIS |
596 | sv_catpv(PL_linestr,";}"); |
597 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
598 | } |
599 | else | |
3280af22 | 600 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
601 | |
602 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
603 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
604 | = SvPVX(PL_linestr); | |
3280af22 | 605 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 606 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
607 | |
608 | /* Close the filehandle. Could be from -P preprocessor, | |
609 | * STDIN, or a regular file. If we were reading code from | |
610 | * STDIN (because the commandline held no -e or filename) | |
611 | * then we don't close it, we reset it so the code can | |
612 | * read from STDIN too. | |
613 | */ | |
614 | ||
3280af22 NIS |
615 | if (PL_preprocess && !PL_in_eval) |
616 | (void)PerlProc_pclose(PL_rsfp); | |
617 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
618 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 619 | else |
3280af22 NIS |
620 | (void)PerlIO_close(PL_rsfp); |
621 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
622 | return s; |
623 | } | |
ffb4593c NT |
624 | |
625 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
626 | /* make corresponding updates to old pointers, for yyerror() */ |
627 | oldprevlen = PL_oldbufptr - PL_bufend; | |
628 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
629 | if (PL_last_uni) | |
630 | oldunilen = PL_last_uni - PL_bufend; | |
631 | if (PL_last_lop) | |
632 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
633 | PL_linestart = PL_bufptr = s + prevlen; |
634 | PL_bufend = s + SvCUR(PL_linestr); | |
635 | s = PL_bufptr; | |
09bef843 SB |
636 | PL_oldbufptr = s + oldprevlen; |
637 | PL_oldoldbufptr = s + oldoldprevlen; | |
638 | if (PL_last_uni) | |
639 | PL_last_uni = s + oldunilen; | |
640 | if (PL_last_lop) | |
641 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 642 | incline(s); |
ffb4593c NT |
643 | |
644 | /* debugger active and we're not compiling the debugger code, | |
645 | * so store the line into the debugger's array of lines | |
646 | */ | |
3280af22 | 647 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
648 | SV *sv = NEWSV(85,0); |
649 | ||
650 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 651 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
652 | (void)SvIOK_on(sv); |
653 | SvIVX(sv) = 0; | |
57843af0 | 654 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 655 | } |
463ee0b2 | 656 | } |
a687059c | 657 | } |
378cc40b | 658 | |
ffb4593c NT |
659 | /* |
660 | * S_check_uni | |
661 | * Check the unary operators to ensure there's no ambiguity in how they're | |
662 | * used. An ambiguous piece of code would be: | |
663 | * rand + 5 | |
664 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
665 | * the +5 is its argument. | |
666 | */ | |
667 | ||
76e3520e | 668 | STATIC void |
cea2e8a9 | 669 | S_check_uni(pTHX) |
ba106d47 | 670 | { |
2f3197b3 | 671 | char *s; |
a0d0e21e | 672 | char *t; |
2f3197b3 | 673 | |
3280af22 | 674 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 675 | return; |
3280af22 NIS |
676 | while (isSPACE(*PL_last_uni)) |
677 | PL_last_uni++; | |
7e2040f0 | 678 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 679 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 680 | return; |
0453d815 | 681 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 682 | char ch = *s; |
0453d815 | 683 | *s = '\0'; |
9014280d | 684 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
2d5ccbba | 685 | "Warning: Use of \"%s\" without parentheses is ambiguous", |
0453d815 PM |
686 | PL_last_uni); |
687 | *s = ch; | |
688 | } | |
2f3197b3 LW |
689 | } |
690 | ||
ffb4593c NT |
691 | /* |
692 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
693 | * with a subroutine, S_lop() for which LOP is just another name. | |
694 | */ | |
695 | ||
a0d0e21e LW |
696 | #define LOP(f,x) return lop(f,x,s) |
697 | ||
ffb4593c NT |
698 | /* |
699 | * S_lop | |
700 | * Build a list operator (or something that might be one). The rules: | |
701 | * - if we have a next token, then it's a list operator [why?] | |
702 | * - if the next thing is an opening paren, then it's a function | |
703 | * - else it's a list operator | |
704 | */ | |
705 | ||
76e3520e | 706 | STATIC I32 |
a0be28da | 707 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 708 | { |
79072805 | 709 | yylval.ival = f; |
35c8bce7 | 710 | CLINE; |
075953c3 | 711 | REPORT("lop", f) |
3280af22 NIS |
712 | PL_expect = x; |
713 | PL_bufptr = s; | |
714 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 715 | PL_last_lop_op = (OPCODE)f; |
3280af22 | 716 | if (PL_nexttoke) |
a0d0e21e | 717 | return LSTOP; |
79072805 LW |
718 | if (*s == '(') |
719 | return FUNC; | |
720 | s = skipspace(s); | |
721 | if (*s == '(') | |
722 | return FUNC; | |
723 | else | |
724 | return LSTOP; | |
725 | } | |
726 | ||
ffb4593c NT |
727 | /* |
728 | * S_force_next | |
9cbb5ea2 | 729 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 730 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
731 | * to know what token to return the next time the lexer is called. Caller |
732 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
733 | * handles the token correctly. | |
ffb4593c NT |
734 | */ |
735 | ||
4e553d73 | 736 | STATIC void |
cea2e8a9 | 737 | S_force_next(pTHX_ I32 type) |
79072805 | 738 | { |
3280af22 NIS |
739 | PL_nexttype[PL_nexttoke] = type; |
740 | PL_nexttoke++; | |
741 | if (PL_lex_state != LEX_KNOWNEXT) { | |
742 | PL_lex_defer = PL_lex_state; | |
743 | PL_lex_expect = PL_expect; | |
744 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
745 | } |
746 | } | |
747 | ||
ffb4593c NT |
748 | /* |
749 | * S_force_word | |
750 | * When the lexer knows the next thing is a word (for instance, it has | |
751 | * just seen -> and it knows that the next char is a word char, then | |
752 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
753 | * | |
754 | * Arguments: | |
b1b65b59 | 755 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
756 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
757 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
758 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
759 | * int allow_pack : if true, : characters will also be allowed (require, | |
760 | * use, etc. do this) | |
9cbb5ea2 | 761 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
762 | */ |
763 | ||
76e3520e | 764 | STATIC char * |
cea2e8a9 | 765 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 766 | { |
463ee0b2 LW |
767 | register char *s; |
768 | STRLEN len; | |
4e553d73 | 769 | |
463ee0b2 LW |
770 | start = skipspace(start); |
771 | s = start; | |
7e2040f0 | 772 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 773 | (allow_pack && *s == ':') || |
15f0808c | 774 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 775 | { |
3280af22 NIS |
776 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
777 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
778 | return start; |
779 | if (token == METHOD) { | |
780 | s = skipspace(s); | |
781 | if (*s == '(') | |
3280af22 | 782 | PL_expect = XTERM; |
463ee0b2 | 783 | else { |
3280af22 | 784 | PL_expect = XOPERATOR; |
463ee0b2 | 785 | } |
79072805 | 786 | } |
3280af22 NIS |
787 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
788 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
5464dbd2 RGS |
789 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
790 | SvUTF8_on(((SVOP*)PL_nextval[PL_nexttoke].opval)->op_sv); | |
79072805 LW |
791 | force_next(token); |
792 | } | |
793 | return s; | |
794 | } | |
795 | ||
ffb4593c NT |
796 | /* |
797 | * S_force_ident | |
9cbb5ea2 | 798 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
799 | * text only contains the "foo" portion. The first argument is a pointer |
800 | * to the "foo", and the second argument is the type symbol to prefix. | |
801 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 802 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
803 | */ |
804 | ||
76e3520e | 805 | STATIC void |
cea2e8a9 | 806 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
807 | { |
808 | if (s && *s) { | |
11343788 | 809 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 810 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 811 | force_next(WORD); |
748a9306 | 812 | if (kind) { |
11343788 | 813 | o->op_private = OPpCONST_ENTERED; |
55497cff | 814 | /* XXX see note in pp_entereval() for why we forgo typo |
815 | warnings if the symbol must be introduced in an eval. | |
816 | GSAR 96-10-12 */ | |
3280af22 | 817 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
818 | kind == '$' ? SVt_PV : |
819 | kind == '@' ? SVt_PVAV : | |
820 | kind == '%' ? SVt_PVHV : | |
821 | SVt_PVGV | |
822 | ); | |
748a9306 | 823 | } |
79072805 LW |
824 | } |
825 | } | |
826 | ||
1571675a GS |
827 | NV |
828 | Perl_str_to_version(pTHX_ SV *sv) | |
829 | { | |
830 | NV retval = 0.0; | |
831 | NV nshift = 1.0; | |
832 | STRLEN len; | |
833 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 834 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
835 | char *end = start + len; |
836 | while (start < end) { | |
ba210ebe | 837 | STRLEN skip; |
1571675a GS |
838 | UV n; |
839 | if (utf) | |
9041c2e3 | 840 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
841 | else { |
842 | n = *(U8*)start; | |
843 | skip = 1; | |
844 | } | |
845 | retval += ((NV)n)/nshift; | |
846 | start += skip; | |
847 | nshift *= 1000; | |
848 | } | |
849 | return retval; | |
850 | } | |
851 | ||
4e553d73 | 852 | /* |
ffb4593c NT |
853 | * S_force_version |
854 | * Forces the next token to be a version number. | |
e759cc13 RGS |
855 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
856 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
857 | * must use an alternative parsing method). | |
ffb4593c NT |
858 | */ |
859 | ||
76e3520e | 860 | STATIC char * |
e759cc13 | 861 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 862 | { |
863 | OP *version = Nullop; | |
44dcb63b | 864 | char *d; |
89bfa8cd | 865 | |
866 | s = skipspace(s); | |
867 | ||
44dcb63b | 868 | d = s; |
dd629d5b | 869 | if (*d == 'v') |
44dcb63b | 870 | d++; |
44dcb63b | 871 | if (isDIGIT(*d)) { |
e759cc13 RGS |
872 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
873 | d++; | |
9f3d182e | 874 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 875 | SV *ver; |
b73d6f50 | 876 | s = scan_num(s, &yylval); |
89bfa8cd | 877 | version = yylval.opval; |
dd629d5b GS |
878 | ver = cSVOPx(version)->op_sv; |
879 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 880 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
881 | SvNVX(ver) = str_to_version(ver); |
882 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 883 | } |
89bfa8cd | 884 | } |
e759cc13 RGS |
885 | else if (guessing) |
886 | return s; | |
89bfa8cd | 887 | } |
888 | ||
889 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 890 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 891 | force_next(WORD); |
89bfa8cd | 892 | |
e759cc13 | 893 | return s; |
89bfa8cd | 894 | } |
895 | ||
ffb4593c NT |
896 | /* |
897 | * S_tokeq | |
898 | * Tokenize a quoted string passed in as an SV. It finds the next | |
899 | * chunk, up to end of string or a backslash. It may make a new | |
900 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
901 | * turns \\ into \. | |
902 | */ | |
903 | ||
76e3520e | 904 | STATIC SV * |
cea2e8a9 | 905 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
906 | { |
907 | register char *s; | |
908 | register char *send; | |
909 | register char *d; | |
b3ac6de7 IZ |
910 | STRLEN len = 0; |
911 | SV *pv = sv; | |
79072805 LW |
912 | |
913 | if (!SvLEN(sv)) | |
b3ac6de7 | 914 | goto finish; |
79072805 | 915 | |
a0d0e21e | 916 | s = SvPV_force(sv, len); |
21a311ee | 917 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 918 | goto finish; |
463ee0b2 | 919 | send = s + len; |
79072805 LW |
920 | while (s < send && *s != '\\') |
921 | s++; | |
922 | if (s == send) | |
b3ac6de7 | 923 | goto finish; |
79072805 | 924 | d = s; |
be4731d2 | 925 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 926 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
927 | if (SvUTF8(sv)) |
928 | SvUTF8_on(pv); | |
929 | } | |
79072805 LW |
930 | while (s < send) { |
931 | if (*s == '\\') { | |
a0d0e21e | 932 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
933 | s++; /* all that, just for this */ |
934 | } | |
935 | *d++ = *s++; | |
936 | } | |
937 | *d = '\0'; | |
463ee0b2 | 938 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 939 | finish: |
3280af22 | 940 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 941 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
942 | return sv; |
943 | } | |
944 | ||
ffb4593c NT |
945 | /* |
946 | * Now come three functions related to double-quote context, | |
947 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
948 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
949 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
950 | * to handle functions and concatenation. | |
951 | * They assume that whoever calls them will be setting up a fake | |
952 | * join call, because each subthing puts a ',' after it. This lets | |
953 | * "lower \luPpEr" | |
954 | * become | |
955 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
956 | * | |
957 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
958 | * arguments and join's arguments are created or not). | |
959 | */ | |
960 | ||
961 | /* | |
962 | * S_sublex_start | |
963 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
964 | * | |
965 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
966 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
967 | * | |
968 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
969 | * | |
970 | * Everything else becomes a FUNC. | |
971 | * | |
972 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
973 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
974 | * call to S_sublex_push(). | |
975 | */ | |
976 | ||
76e3520e | 977 | STATIC I32 |
cea2e8a9 | 978 | S_sublex_start(pTHX) |
79072805 LW |
979 | { |
980 | register I32 op_type = yylval.ival; | |
79072805 LW |
981 | |
982 | if (op_type == OP_NULL) { | |
3280af22 NIS |
983 | yylval.opval = PL_lex_op; |
984 | PL_lex_op = Nullop; | |
79072805 LW |
985 | return THING; |
986 | } | |
987 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 988 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
989 | |
990 | if (SvTYPE(sv) == SVt_PVIV) { | |
991 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
992 | STRLEN len; | |
993 | char *p; | |
994 | SV *nsv; | |
995 | ||
996 | p = SvPV(sv, len); | |
79cb57f6 | 997 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
998 | if (SvUTF8(sv)) |
999 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
1000 | SvREFCNT_dec(sv); |
1001 | sv = nsv; | |
4e553d73 | 1002 | } |
b3ac6de7 | 1003 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 1004 | PL_lex_stuff = Nullsv; |
6f33ba73 RGS |
1005 | /* Allow <FH> // "foo" */ |
1006 | if (op_type == OP_READLINE) | |
1007 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
1008 | return THING; |
1009 | } | |
1010 | ||
3280af22 NIS |
1011 | PL_sublex_info.super_state = PL_lex_state; |
1012 | PL_sublex_info.sub_inwhat = op_type; | |
1013 | PL_sublex_info.sub_op = PL_lex_op; | |
1014 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1015 | |
3280af22 NIS |
1016 | PL_expect = XTERM; |
1017 | if (PL_lex_op) { | |
1018 | yylval.opval = PL_lex_op; | |
1019 | PL_lex_op = Nullop; | |
55497cff | 1020 | return PMFUNC; |
1021 | } | |
1022 | else | |
1023 | return FUNC; | |
1024 | } | |
1025 | ||
ffb4593c NT |
1026 | /* |
1027 | * S_sublex_push | |
1028 | * Create a new scope to save the lexing state. The scope will be | |
1029 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1030 | * to the uc, lc, etc. found before. | |
1031 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1032 | */ | |
1033 | ||
76e3520e | 1034 | STATIC I32 |
cea2e8a9 | 1035 | S_sublex_push(pTHX) |
55497cff | 1036 | { |
f46d017c | 1037 | ENTER; |
55497cff | 1038 | |
3280af22 NIS |
1039 | PL_lex_state = PL_sublex_info.super_state; |
1040 | SAVEI32(PL_lex_dojoin); | |
1041 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1042 | SAVEI32(PL_lex_casemods); |
1043 | SAVEI32(PL_lex_starts); | |
1044 | SAVEI32(PL_lex_state); | |
7766f137 | 1045 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1046 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1047 | SAVECOPLINE(PL_curcop); |
3280af22 | 1048 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1049 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1050 | SAVEPPTR(PL_oldbufptr); |
1051 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1052 | SAVEPPTR(PL_last_lop); |
1053 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1054 | SAVEPPTR(PL_linestart); |
1055 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
1056 | SAVEGENERICPV(PL_lex_brackstack); |
1057 | SAVEGENERICPV(PL_lex_casestack); | |
3280af22 NIS |
1058 | |
1059 | PL_linestr = PL_lex_stuff; | |
1060 | PL_lex_stuff = Nullsv; | |
1061 | ||
9cbb5ea2 GS |
1062 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1063 | = SvPVX(PL_linestr); | |
3280af22 | 1064 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1065 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1066 | SAVEFREESV(PL_linestr); |
1067 | ||
1068 | PL_lex_dojoin = FALSE; | |
1069 | PL_lex_brackets = 0; | |
3280af22 NIS |
1070 | New(899, PL_lex_brackstack, 120, char); |
1071 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
1072 | PL_lex_casemods = 0; |
1073 | *PL_lex_casestack = '\0'; | |
1074 | PL_lex_starts = 0; | |
1075 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 1076 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 NIS |
1077 | |
1078 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1079 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1080 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1081 | else |
3280af22 | 1082 | PL_lex_inpat = Nullop; |
79072805 | 1083 | |
55497cff | 1084 | return '('; |
79072805 LW |
1085 | } |
1086 | ||
ffb4593c NT |
1087 | /* |
1088 | * S_sublex_done | |
1089 | * Restores lexer state after a S_sublex_push. | |
1090 | */ | |
1091 | ||
76e3520e | 1092 | STATIC I32 |
cea2e8a9 | 1093 | S_sublex_done(pTHX) |
79072805 | 1094 | { |
3280af22 | 1095 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1096 | SV *sv = newSVpvn("",0); |
1097 | if (SvUTF8(PL_linestr)) | |
1098 | SvUTF8_on(sv); | |
3280af22 | 1099 | PL_expect = XOPERATOR; |
9aa983d2 | 1100 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1101 | return THING; |
1102 | } | |
1103 | ||
3280af22 NIS |
1104 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1105 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1106 | return yylex(); |
79072805 LW |
1107 | } |
1108 | ||
ffb4593c | 1109 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1110 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1111 | PL_linestr = PL_lex_repl; | |
1112 | PL_lex_inpat = 0; | |
1113 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1114 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1115 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1116 | SAVEFREESV(PL_linestr); |
1117 | PL_lex_dojoin = FALSE; | |
1118 | PL_lex_brackets = 0; | |
3280af22 NIS |
1119 | PL_lex_casemods = 0; |
1120 | *PL_lex_casestack = '\0'; | |
1121 | PL_lex_starts = 0; | |
25da4f38 | 1122 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1123 | PL_lex_state = LEX_INTERPNORMAL; |
1124 | PL_lex_starts++; | |
e9fa98b2 HS |
1125 | /* we don't clear PL_lex_repl here, so that we can check later |
1126 | whether this is an evalled subst; that means we rely on the | |
1127 | logic to ensure sublex_done() is called again only via the | |
1128 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1129 | } |
e9fa98b2 | 1130 | else { |
3280af22 | 1131 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1132 | PL_lex_repl = Nullsv; |
1133 | } | |
79072805 | 1134 | return ','; |
ffed7fef LW |
1135 | } |
1136 | else { | |
f46d017c | 1137 | LEAVE; |
3280af22 NIS |
1138 | PL_bufend = SvPVX(PL_linestr); |
1139 | PL_bufend += SvCUR(PL_linestr); | |
1140 | PL_expect = XOPERATOR; | |
09bef843 | 1141 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1142 | return ')'; |
ffed7fef LW |
1143 | } |
1144 | } | |
1145 | ||
02aa26ce NT |
1146 | /* |
1147 | scan_const | |
1148 | ||
1149 | Extracts a pattern, double-quoted string, or transliteration. This | |
1150 | is terrifying code. | |
1151 | ||
3280af22 NIS |
1152 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1153 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1154 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1155 | ||
9b599b2a GS |
1156 | Returns a pointer to the character scanned up to. Iff this is |
1157 | advanced from the start pointer supplied (ie if anything was | |
1158 | successfully parsed), will leave an OP for the substring scanned | |
1159 | in yylval. Caller must intuit reason for not parsing further | |
1160 | by looking at the next characters herself. | |
1161 | ||
02aa26ce NT |
1162 | In patterns: |
1163 | backslashes: | |
1164 | double-quoted style: \r and \n | |
1165 | regexp special ones: \D \s | |
1166 | constants: \x3 | |
1167 | backrefs: \1 (deprecated in substitution replacements) | |
1168 | case and quoting: \U \Q \E | |
1169 | stops on @ and $, but not for $ as tail anchor | |
1170 | ||
1171 | In transliterations: | |
1172 | characters are VERY literal, except for - not at the start or end | |
1173 | of the string, which indicates a range. scan_const expands the | |
1174 | range to the full set of intermediate characters. | |
1175 | ||
1176 | In double-quoted strings: | |
1177 | backslashes: | |
1178 | double-quoted style: \r and \n | |
1179 | constants: \x3 | |
1180 | backrefs: \1 (deprecated) | |
1181 | case and quoting: \U \Q \E | |
1182 | stops on @ and $ | |
1183 | ||
1184 | scan_const does *not* construct ops to handle interpolated strings. | |
1185 | It stops processing as soon as it finds an embedded $ or @ variable | |
1186 | and leaves it to the caller to work out what's going on. | |
1187 | ||
da6eedaa | 1188 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @::foo. |
02aa26ce NT |
1189 | |
1190 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1191 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1192 | followed by one of ")| \n\t" | |
1193 | ||
1194 | \1 (backreferences) are turned into $1 | |
1195 | ||
1196 | The structure of the code is | |
1197 | while (there's a character to process) { | |
1198 | handle transliteration ranges | |
1199 | skip regexp comments | |
1200 | skip # initiated comments in //x patterns | |
1201 | check for embedded @foo | |
1202 | check for embedded scalars | |
1203 | if (backslash) { | |
1204 | leave intact backslashes from leave (below) | |
1205 | deprecate \1 in strings and sub replacements | |
1206 | handle string-changing backslashes \l \U \Q \E, etc. | |
1207 | switch (what was escaped) { | |
1208 | handle - in a transliteration (becomes a literal -) | |
1209 | handle \132 octal characters | |
1210 | handle 0x15 hex characters | |
1211 | handle \cV (control V) | |
1212 | handle printf backslashes (\f, \r, \n, etc) | |
1213 | } (end switch) | |
1214 | } (end if backslash) | |
1215 | } (end while character to read) | |
4e553d73 | 1216 | |
02aa26ce NT |
1217 | */ |
1218 | ||
76e3520e | 1219 | STATIC char * |
cea2e8a9 | 1220 | S_scan_const(pTHX_ char *start) |
79072805 | 1221 | { |
3280af22 | 1222 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1223 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1224 | register char *s = start; /* start of the constant */ | |
1225 | register char *d = SvPVX(sv); /* destination for copies */ | |
1226 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1227 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1228 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1229 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1230 | UV uv; |
1231 | ||
dff6d3cd | 1232 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1233 | PL_lex_inpat |
4a2d328f | 1234 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1235 | : ""; |
79072805 | 1236 | |
2b9d42f0 NIS |
1237 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1238 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1239 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1240 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1241 | } | |
1242 | ||
1243 | ||
79072805 | 1244 | while (s < send || dorange) { |
02aa26ce | 1245 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1246 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1247 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1248 | if (dorange) { |
1ba5c669 JH |
1249 | I32 i; /* current expanded character */ |
1250 | I32 min; /* first character in range */ | |
1251 | I32 max; /* last character in range */ | |
02aa26ce | 1252 | |
2b9d42f0 | 1253 | if (has_utf8) { |
8973db79 JH |
1254 | char *c = (char*)utf8_hop((U8*)d, -1); |
1255 | char *e = d++; | |
1256 | while (e-- > c) | |
1257 | *(e + 1) = *e; | |
25716404 | 1258 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1259 | /* mark the range as done, and continue */ |
1260 | dorange = FALSE; | |
1261 | didrange = TRUE; | |
1262 | continue; | |
1263 | } | |
2b9d42f0 | 1264 | |
02aa26ce | 1265 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1266 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1267 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1268 | d -= 2; /* eat the first char and the - */ |
1269 | ||
8ada0baa JH |
1270 | min = (U8)*d; /* first char in range */ |
1271 | max = (U8)d[1]; /* last char in range */ | |
1272 | ||
c2e66d9e | 1273 | if (min > max) { |
01ec43d0 | 1274 | Perl_croak(aTHX_ |
d1573ac7 | 1275 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 1276 | (char)min, (char)max); |
c2e66d9e GS |
1277 | } |
1278 | ||
c7f1f016 | 1279 | #ifdef EBCDIC |
8ada0baa JH |
1280 | if ((isLOWER(min) && isLOWER(max)) || |
1281 | (isUPPER(min) && isUPPER(max))) { | |
1282 | if (isLOWER(min)) { | |
1283 | for (i = min; i <= max; i++) | |
1284 | if (isLOWER(i)) | |
db42d148 | 1285 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1286 | } else { |
1287 | for (i = min; i <= max; i++) | |
1288 | if (isUPPER(i)) | |
db42d148 | 1289 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1290 | } |
1291 | } | |
1292 | else | |
1293 | #endif | |
1294 | for (i = min; i <= max; i++) | |
eb160463 | 1295 | *d++ = (char)i; |
02aa26ce NT |
1296 | |
1297 | /* mark the range as done, and continue */ | |
79072805 | 1298 | dorange = FALSE; |
01ec43d0 | 1299 | didrange = TRUE; |
79072805 | 1300 | continue; |
4e553d73 | 1301 | } |
02aa26ce NT |
1302 | |
1303 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1304 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1305 | if (didrange) { |
1fafa243 | 1306 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1307 | } |
2b9d42f0 | 1308 | if (has_utf8) { |
25716404 | 1309 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1310 | s++; |
1311 | continue; | |
1312 | } | |
79072805 LW |
1313 | dorange = TRUE; |
1314 | s++; | |
01ec43d0 GS |
1315 | } |
1316 | else { | |
1317 | didrange = FALSE; | |
1318 | } | |
79072805 | 1319 | } |
02aa26ce NT |
1320 | |
1321 | /* if we get here, we're not doing a transliteration */ | |
1322 | ||
0f5d15d6 IZ |
1323 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1324 | except for the last char, which will be done separately. */ | |
3280af22 | 1325 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1326 | if (s[2] == '#') { |
1327 | while (s < send && *s != ')') | |
db42d148 | 1328 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1329 | } |
1330 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1331 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1332 | { | |
cc6b7395 | 1333 | I32 count = 1; |
0f5d15d6 | 1334 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1335 | char c; |
1336 | ||
d9f97599 GS |
1337 | while (count && (c = *regparse)) { |
1338 | if (c == '\\' && regparse[1]) | |
1339 | regparse++; | |
4e553d73 | 1340 | else if (c == '{') |
cc6b7395 | 1341 | count++; |
4e553d73 | 1342 | else if (c == '}') |
cc6b7395 | 1343 | count--; |
d9f97599 | 1344 | regparse++; |
cc6b7395 | 1345 | } |
5bdf89e7 IZ |
1346 | if (*regparse != ')') { |
1347 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1348 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1349 | } |
0f5d15d6 | 1350 | while (s < regparse) |
db42d148 | 1351 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1352 | } |
748a9306 | 1353 | } |
02aa26ce NT |
1354 | |
1355 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1356 | else if (*s == '#' && PL_lex_inpat && |
1357 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1358 | while (s+1 < send && *s != '\n') |
db42d148 | 1359 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1360 | } |
02aa26ce | 1361 | |
5d1d4326 | 1362 | /* check for embedded arrays |
da6eedaa | 1363 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 1364 | */ |
7e2040f0 | 1365 | else if (*s == '@' && s[1] |
5d1d4326 | 1366 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1367 | break; |
02aa26ce NT |
1368 | |
1369 | /* check for embedded scalars. only stop if we're sure it's a | |
1370 | variable. | |
1371 | */ | |
79072805 | 1372 | else if (*s == '$') { |
3280af22 | 1373 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1374 | break; |
6002328a | 1375 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1376 | break; /* in regexp, $ might be tail anchor */ |
1377 | } | |
02aa26ce | 1378 | |
2b9d42f0 NIS |
1379 | /* End of else if chain - OP_TRANS rejoin rest */ |
1380 | ||
02aa26ce | 1381 | /* backslashes */ |
79072805 LW |
1382 | if (*s == '\\' && s+1 < send) { |
1383 | s++; | |
02aa26ce NT |
1384 | |
1385 | /* some backslashes we leave behind */ | |
c9f97d15 | 1386 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1387 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1388 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1389 | continue; |
1390 | } | |
02aa26ce NT |
1391 | |
1392 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1393 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1394 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1395 | { |
599cee73 | 1396 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 1397 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
1398 | *--s = '$'; |
1399 | break; | |
1400 | } | |
02aa26ce NT |
1401 | |
1402 | /* string-change backslash escapes */ | |
3280af22 | 1403 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1404 | --s; |
1405 | break; | |
1406 | } | |
02aa26ce NT |
1407 | |
1408 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1409 | switch (*s) { |
02aa26ce NT |
1410 | |
1411 | /* quoted - in transliterations */ | |
79072805 | 1412 | case '-': |
3280af22 | 1413 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1414 | *d++ = *s++; |
1415 | continue; | |
1416 | } | |
1417 | /* FALL THROUGH */ | |
1418 | default: | |
11b8faa4 | 1419 | { |
707afd92 MS |
1420 | if (ckWARN(WARN_MISC) && |
1421 | isALNUM(*s) && | |
1422 | *s != '_') | |
9014280d | 1423 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
11b8faa4 JH |
1424 | "Unrecognized escape \\%c passed through", |
1425 | *s); | |
1426 | /* default action is to copy the quoted character */ | |
f9a63242 | 1427 | goto default_action; |
11b8faa4 | 1428 | } |
02aa26ce NT |
1429 | |
1430 | /* \132 indicates an octal constant */ | |
79072805 LW |
1431 | case '0': case '1': case '2': case '3': |
1432 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1433 | { |
53305cf1 NC |
1434 | I32 flags = 0; |
1435 | STRLEN len = 3; | |
1436 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1437 | s += len; |
1438 | } | |
012bcf8d | 1439 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1440 | |
1441 | /* \x24 indicates a hex constant */ | |
79072805 | 1442 | case 'x': |
a0ed51b3 LW |
1443 | ++s; |
1444 | if (*s == '{') { | |
1445 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1446 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1447 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1448 | STRLEN len; |
355860ce | 1449 | |
53305cf1 | 1450 | ++s; |
adaeee49 | 1451 | if (!e) { |
a0ed51b3 | 1452 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1453 | continue; |
ba210ebe | 1454 | } |
53305cf1 NC |
1455 | len = e - s; |
1456 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1457 | s = e + 1; |
a0ed51b3 LW |
1458 | } |
1459 | else { | |
ba210ebe | 1460 | { |
53305cf1 | 1461 | STRLEN len = 2; |
a4c04bdc | 1462 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1463 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1464 | s += len; |
1465 | } | |
012bcf8d GS |
1466 | } |
1467 | ||
1468 | NUM_ESCAPE_INSERT: | |
1469 | /* Insert oct or hex escaped character. | |
301d3d20 | 1470 | * There will always enough room in sv since such |
db42d148 | 1471 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1472 | * they can end up as. */ |
ba7cea30 | 1473 | |
c7f1f016 NIS |
1474 | /* We need to map to chars to ASCII before doing the tests |
1475 | to cover EBCDIC | |
1476 | */ | |
c4d5f83a | 1477 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1478 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1479 | /* Might need to recode whatever we have |
1480 | * accumulated so far if it contains any | |
1481 | * hibit chars. | |
1482 | * | |
1483 | * (Can't we keep track of that and avoid | |
1484 | * this rescan? --jhi) | |
012bcf8d | 1485 | */ |
c7f1f016 | 1486 | int hicount = 0; |
63cd0674 NIS |
1487 | U8 *c; |
1488 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1489 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1490 | hicount++; |
db42d148 | 1491 | } |
012bcf8d | 1492 | } |
63cd0674 | 1493 | if (hicount) { |
db42d148 NIS |
1494 | STRLEN offset = d - SvPVX(sv); |
1495 | U8 *src, *dst; | |
1496 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1497 | src = (U8 *)d - 1; | |
1498 | dst = src+hicount; | |
1499 | d += hicount; | |
1500 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1501 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1502 | U8 ch = NATIVE_TO_ASCII(*src); |
eb160463 GS |
1503 | *dst-- = (U8)UTF8_EIGHT_BIT_LO(ch); |
1504 | *dst-- = (U8)UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1505 | } |
1506 | else { | |
63cd0674 | 1507 | *dst-- = *src; |
012bcf8d | 1508 | } |
c7f1f016 | 1509 | src--; |
012bcf8d GS |
1510 | } |
1511 | } | |
1512 | } | |
1513 | ||
9aa983d2 | 1514 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1515 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1516 | has_utf8 = TRUE; |
f9a63242 JH |
1517 | if (PL_lex_inwhat == OP_TRANS && |
1518 | PL_sublex_info.sub_op) { | |
1519 | PL_sublex_info.sub_op->op_private |= | |
1520 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1521 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1522 | } |
012bcf8d | 1523 | } |
a0ed51b3 | 1524 | else { |
012bcf8d | 1525 | *d++ = (char)uv; |
a0ed51b3 | 1526 | } |
012bcf8d GS |
1527 | } |
1528 | else { | |
c4d5f83a | 1529 | *d++ = (char) uv; |
a0ed51b3 | 1530 | } |
79072805 | 1531 | continue; |
02aa26ce | 1532 | |
b239daa5 | 1533 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1534 | case 'N': |
55eda711 | 1535 | ++s; |
423cee85 JH |
1536 | if (*s == '{') { |
1537 | char* e = strchr(s, '}'); | |
155aba94 | 1538 | SV *res; |
423cee85 JH |
1539 | STRLEN len; |
1540 | char *str; | |
4e553d73 | 1541 | |
423cee85 | 1542 | if (!e) { |
5777a3f7 | 1543 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1544 | e = s - 1; |
1545 | goto cont_scan; | |
1546 | } | |
dbc0d4f2 JH |
1547 | if (e > s + 2 && s[1] == 'U' && s[2] == '+') { |
1548 | /* \N{U+...} */ | |
1549 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | | |
1550 | PERL_SCAN_DISALLOW_PREFIX; | |
1551 | s += 3; | |
1552 | len = e - s; | |
1553 | uv = grok_hex(s, &len, &flags, NULL); | |
1554 | s = e + 1; | |
1555 | goto NUM_ESCAPE_INSERT; | |
1556 | } | |
55eda711 JH |
1557 | res = newSVpvn(s + 1, e - s - 1); |
1558 | res = new_constant( Nullch, 0, "charnames", | |
1559 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1560 | if (has_utf8) |
1561 | sv_utf8_upgrade(res); | |
423cee85 | 1562 | str = SvPV(res,len); |
1c47067b JH |
1563 | #ifdef EBCDIC_NEVER_MIND |
1564 | /* charnames uses pack U and that has been | |
1565 | * recently changed to do the below uni->native | |
1566 | * mapping, so this would be redundant (and wrong, | |
1567 | * the code point would be doubly converted). | |
1568 | * But leave this in just in case the pack U change | |
1569 | * gets revoked, but the semantics is still | |
1570 | * desireable for charnames. --jhi */ | |
cddc7ef4 JH |
1571 | { |
1572 | UV uv = utf8_to_uvchr((U8*)str, 0); | |
1573 | ||
1574 | if (uv < 0x100) { | |
1575 | U8 tmpbuf[UTF8_MAXLEN+1], *d; | |
1576 | ||
1577 | d = uvchr_to_utf8(tmpbuf, UNI_TO_NATIVE(uv)); | |
1578 | sv_setpvn(res, (char *)tmpbuf, d - tmpbuf); | |
1579 | str = SvPV(res, len); | |
1580 | } | |
1581 | } | |
1582 | #endif | |
89491803 | 1583 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1584 | char *ostart = SvPVX(sv); |
1585 | SvCUR_set(sv, d - ostart); | |
1586 | SvPOK_on(sv); | |
e4f3eed8 | 1587 | *d = '\0'; |
f08d6ad9 | 1588 | sv_utf8_upgrade(sv); |
d2f449dd | 1589 | /* this just broke our allocation above... */ |
eb160463 | 1590 | SvGROW(sv, (STRLEN)(send - start)); |
f08d6ad9 | 1591 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1592 | has_utf8 = TRUE; |
f08d6ad9 | 1593 | } |
eb160463 | 1594 | if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1595 | char *odest = SvPVX(sv); |
1596 | ||
8973db79 | 1597 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1598 | d = SvPVX(sv) + (d - odest); |
1599 | } | |
1600 | Copy(str, d, len, char); | |
1601 | d += len; | |
1602 | SvREFCNT_dec(res); | |
1603 | cont_scan: | |
1604 | s = e + 1; | |
1605 | } | |
1606 | else | |
5777a3f7 | 1607 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1608 | continue; |
1609 | ||
02aa26ce | 1610 | /* \c is a control character */ |
79072805 LW |
1611 | case 'c': |
1612 | s++; | |
961ce445 | 1613 | if (s < send) { |
ba210ebe | 1614 | U8 c = *s++; |
c7f1f016 NIS |
1615 | #ifdef EBCDIC |
1616 | if (isLOWER(c)) | |
1617 | c = toUPPER(c); | |
1618 | #endif | |
db42d148 | 1619 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1620 | } |
961ce445 RGS |
1621 | else { |
1622 | yyerror("Missing control char name in \\c"); | |
1623 | } | |
79072805 | 1624 | continue; |
02aa26ce NT |
1625 | |
1626 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1627 | case 'b': |
db42d148 | 1628 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1629 | break; |
1630 | case 'n': | |
db42d148 | 1631 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1632 | break; |
1633 | case 'r': | |
db42d148 | 1634 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1635 | break; |
1636 | case 'f': | |
db42d148 | 1637 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1638 | break; |
1639 | case 't': | |
db42d148 | 1640 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1641 | break; |
34a3fe2a | 1642 | case 'e': |
db42d148 | 1643 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1644 | break; |
1645 | case 'a': | |
db42d148 | 1646 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1647 | break; |
02aa26ce NT |
1648 | } /* end switch */ |
1649 | ||
79072805 LW |
1650 | s++; |
1651 | continue; | |
02aa26ce NT |
1652 | } /* end if (backslash) */ |
1653 | ||
f9a63242 | 1654 | default_action: |
2b9d42f0 NIS |
1655 | /* If we started with encoded form, or already know we want it |
1656 | and then encode the next character */ | |
1657 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1658 | STRLEN len = 1; | |
1659 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1660 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1661 | s += len; | |
1662 | if (need > len) { | |
1663 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1664 | STRLEN off = d - SvPVX(sv); | |
1665 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1666 | } | |
1667 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1668 | has_utf8 = TRUE; | |
1669 | } | |
1670 | else { | |
1671 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1672 | } | |
02aa26ce NT |
1673 | } /* while loop to process each character */ |
1674 | ||
1675 | /* terminate the string and set up the sv */ | |
79072805 | 1676 | *d = '\0'; |
463ee0b2 | 1677 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1678 | if (SvCUR(sv) >= SvLEN(sv)) |
d0063567 | 1679 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1680 | |
79072805 | 1681 | SvPOK_on(sv); |
9f4817db | 1682 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
1683 | sv_recode_to_utf8(sv, PL_encoding); |
1684 | if (SvUTF8(sv)) | |
1685 | has_utf8 = TRUE; | |
9f4817db | 1686 | } |
2b9d42f0 | 1687 | if (has_utf8) { |
7e2040f0 | 1688 | SvUTF8_on(sv); |
2b9d42f0 | 1689 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 1690 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
1691 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
1692 | } | |
1693 | } | |
79072805 | 1694 | |
02aa26ce | 1695 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1696 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1697 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1698 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1699 | } |
02aa26ce | 1700 | |
9b599b2a | 1701 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1702 | if (s > PL_bufptr) { |
1703 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1704 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1705 | sv, Nullsv, |
4e553d73 | 1706 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1707 | ? "tr" |
3280af22 | 1708 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1709 | ? "s" |
1710 | : "qq"))); | |
79072805 | 1711 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1712 | } else |
8990e307 | 1713 | SvREFCNT_dec(sv); |
79072805 LW |
1714 | return s; |
1715 | } | |
1716 | ||
ffb4593c NT |
1717 | /* S_intuit_more |
1718 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1719 | * FALSE otherwise. | |
ffb4593c NT |
1720 | * |
1721 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1722 | * | |
1723 | * ->[ and ->{ return TRUE | |
1724 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1725 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1726 | * if we're in a pattern and the first char is a { | |
1727 | * {4,5} (any digits around the comma) returns FALSE | |
1728 | * if we're in a pattern and the first char is a [ | |
1729 | * [] returns FALSE | |
1730 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1731 | * character class or not. It has to deal with things like | |
1732 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1733 | * anything else returns TRUE | |
1734 | */ | |
1735 | ||
9cbb5ea2 GS |
1736 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1737 | ||
76e3520e | 1738 | STATIC int |
cea2e8a9 | 1739 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1740 | { |
3280af22 | 1741 | if (PL_lex_brackets) |
79072805 LW |
1742 | return TRUE; |
1743 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1744 | return TRUE; | |
1745 | if (*s != '{' && *s != '[') | |
1746 | return FALSE; | |
3280af22 | 1747 | if (!PL_lex_inpat) |
79072805 LW |
1748 | return TRUE; |
1749 | ||
1750 | /* In a pattern, so maybe we have {n,m}. */ | |
1751 | if (*s == '{') { | |
1752 | s++; | |
1753 | if (!isDIGIT(*s)) | |
1754 | return TRUE; | |
1755 | while (isDIGIT(*s)) | |
1756 | s++; | |
1757 | if (*s == ',') | |
1758 | s++; | |
1759 | while (isDIGIT(*s)) | |
1760 | s++; | |
1761 | if (*s == '}') | |
1762 | return FALSE; | |
1763 | return TRUE; | |
1764 | ||
1765 | } | |
1766 | ||
1767 | /* On the other hand, maybe we have a character class */ | |
1768 | ||
1769 | s++; | |
1770 | if (*s == ']' || *s == '^') | |
1771 | return FALSE; | |
1772 | else { | |
ffb4593c | 1773 | /* this is terrifying, and it works */ |
79072805 LW |
1774 | int weight = 2; /* let's weigh the evidence */ |
1775 | char seen[256]; | |
f27ffc4a | 1776 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1777 | char *send = strchr(s,']'); |
3280af22 | 1778 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1779 | |
1780 | if (!send) /* has to be an expression */ | |
1781 | return TRUE; | |
1782 | ||
1783 | Zero(seen,256,char); | |
1784 | if (*s == '$') | |
1785 | weight -= 3; | |
1786 | else if (isDIGIT(*s)) { | |
1787 | if (s[1] != ']') { | |
1788 | if (isDIGIT(s[1]) && s[2] == ']') | |
1789 | weight -= 10; | |
1790 | } | |
1791 | else | |
1792 | weight -= 100; | |
1793 | } | |
1794 | for (; s < send; s++) { | |
1795 | last_un_char = un_char; | |
1796 | un_char = (unsigned char)*s; | |
1797 | switch (*s) { | |
1798 | case '@': | |
1799 | case '&': | |
1800 | case '$': | |
1801 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1802 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1803 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1804 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1805 | weight -= 100; |
1806 | else | |
1807 | weight -= 10; | |
1808 | } | |
1809 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1810 | strchr("[#!%*<>()-=",s[1])) { |
1811 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1812 | weight -= 10; |
1813 | else | |
1814 | weight -= 1; | |
1815 | } | |
1816 | break; | |
1817 | case '\\': | |
1818 | un_char = 254; | |
1819 | if (s[1]) { | |
93a17b20 | 1820 | if (strchr("wds]",s[1])) |
79072805 LW |
1821 | weight += 100; |
1822 | else if (seen['\''] || seen['"']) | |
1823 | weight += 1; | |
93a17b20 | 1824 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1825 | weight += 40; |
1826 | else if (isDIGIT(s[1])) { | |
1827 | weight += 40; | |
1828 | while (s[1] && isDIGIT(s[1])) | |
1829 | s++; | |
1830 | } | |
1831 | } | |
1832 | else | |
1833 | weight += 100; | |
1834 | break; | |
1835 | case '-': | |
1836 | if (s[1] == '\\') | |
1837 | weight += 50; | |
93a17b20 | 1838 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1839 | weight += 30; |
93a17b20 | 1840 | if (strchr("zZ79~",s[1])) |
79072805 | 1841 | weight += 30; |
f27ffc4a GS |
1842 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1843 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1844 | break; |
1845 | default: | |
93a17b20 | 1846 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1847 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1848 | char *d = tmpbuf; | |
1849 | while (isALPHA(*s)) | |
1850 | *d++ = *s++; | |
1851 | *d = '\0'; | |
1852 | if (keyword(tmpbuf, d - tmpbuf)) | |
1853 | weight -= 150; | |
1854 | } | |
1855 | if (un_char == last_un_char + 1) | |
1856 | weight += 5; | |
1857 | weight -= seen[un_char]; | |
1858 | break; | |
1859 | } | |
1860 | seen[un_char]++; | |
1861 | } | |
1862 | if (weight >= 0) /* probably a character class */ | |
1863 | return FALSE; | |
1864 | } | |
1865 | ||
1866 | return TRUE; | |
1867 | } | |
ffed7fef | 1868 | |
ffb4593c NT |
1869 | /* |
1870 | * S_intuit_method | |
1871 | * | |
1872 | * Does all the checking to disambiguate | |
1873 | * foo bar | |
1874 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1875 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1876 | * | |
1877 | * First argument is the stuff after the first token, e.g. "bar". | |
1878 | * | |
1879 | * Not a method if bar is a filehandle. | |
1880 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1881 | * Not a method if it's really "Foo $bar" | |
1882 | * Method if it's "foo $bar" | |
1883 | * Not a method if it's really "print foo $bar" | |
1884 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 1885 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 1886 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1887 | * => |
1888 | */ | |
1889 | ||
76e3520e | 1890 | STATIC int |
cea2e8a9 | 1891 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1892 | { |
1893 | char *s = start + (*start == '$'); | |
3280af22 | 1894 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1895 | STRLEN len; |
1896 | GV* indirgv; | |
1897 | ||
1898 | if (gv) { | |
b6c543e3 | 1899 | CV *cv; |
a0d0e21e LW |
1900 | if (GvIO(gv)) |
1901 | return 0; | |
b6c543e3 IZ |
1902 | if ((cv = GvCVu(gv))) { |
1903 | char *proto = SvPVX(cv); | |
1904 | if (proto) { | |
1905 | if (*proto == ';') | |
1906 | proto++; | |
1907 | if (*proto == '*') | |
1908 | return 0; | |
1909 | } | |
1910 | } else | |
a0d0e21e LW |
1911 | gv = 0; |
1912 | } | |
8903cb82 | 1913 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1914 | /* start is the beginning of the possible filehandle/object, |
1915 | * and s is the end of it | |
1916 | * tmpbuf is a copy of it | |
1917 | */ | |
1918 | ||
a0d0e21e | 1919 | if (*start == '$') { |
3280af22 | 1920 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1921 | return 0; |
1922 | s = skipspace(s); | |
3280af22 NIS |
1923 | PL_bufptr = start; |
1924 | PL_expect = XREF; | |
a0d0e21e LW |
1925 | return *s == '(' ? FUNCMETH : METHOD; |
1926 | } | |
1927 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1928 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1929 | len -= 2; | |
1930 | tmpbuf[len] = '\0'; | |
1931 | goto bare_package; | |
1932 | } | |
1933 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1934 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1935 | return 0; |
1936 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1937 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1938 | s = skipspace(s); |
3280af22 | 1939 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1940 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1941 | bare_package: |
3280af22 | 1942 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1943 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1944 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1945 | PL_expect = XTERM; | |
a0d0e21e | 1946 | force_next(WORD); |
3280af22 | 1947 | PL_bufptr = s; |
a0d0e21e LW |
1948 | return *s == '(' ? FUNCMETH : METHOD; |
1949 | } | |
1950 | } | |
1951 | return 0; | |
1952 | } | |
1953 | ||
ffb4593c NT |
1954 | /* |
1955 | * S_incl_perldb | |
1956 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1957 | * is set, it will return the contents of that, otherwise a | |
1958 | * compile-time require of perl5db.pl. | |
1959 | */ | |
1960 | ||
76e3520e | 1961 | STATIC char* |
cea2e8a9 | 1962 | S_incl_perldb(pTHX) |
a0d0e21e | 1963 | { |
3280af22 | 1964 | if (PL_perldb) { |
76e3520e | 1965 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1966 | |
1967 | if (pdb) | |
1968 | return pdb; | |
93189314 | 1969 | SETERRNO(0,SS_NORMAL); |
a0d0e21e LW |
1970 | return "BEGIN { require 'perl5db.pl' }"; |
1971 | } | |
1972 | return ""; | |
1973 | } | |
1974 | ||
1975 | ||
16d20bd9 | 1976 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 1977 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
1978 | * Note that the filter function only applies to the current source file |
1979 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1980 | * | |
1981 | * The datasv parameter (which may be NULL) can be used to pass | |
1982 | * private data to this instance of the filter. The filter function | |
1983 | * can recover the SV using the FILTER_DATA macro and use it to | |
1984 | * store private buffers and state information. | |
1985 | * | |
1986 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 1987 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 1988 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
1989 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1990 | * private use must be set using malloc'd pointers. | |
1991 | */ | |
16d20bd9 AD |
1992 | |
1993 | SV * | |
864dbfa3 | 1994 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1995 | { |
f4c556ac GS |
1996 | if (!funcp) |
1997 | return Nullsv; | |
1998 | ||
3280af22 NIS |
1999 | if (!PL_rsfp_filters) |
2000 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 2001 | if (!datasv) |
8c52afec | 2002 | datasv = NEWSV(255,0); |
16d20bd9 | 2003 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 2004 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 2005 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 2006 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 2007 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 2008 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
2009 | av_unshift(PL_rsfp_filters, 1); |
2010 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
2011 | return(datasv); |
2012 | } | |
4e553d73 | 2013 | |
16d20bd9 AD |
2014 | |
2015 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2016 | void |
864dbfa3 | 2017 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2018 | { |
e0c19803 | 2019 | SV *datasv; |
fe5a182c | 2020 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2021 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2022 | return; |
2023 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2024 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2025 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2026 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2027 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2028 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2029 | |
16d20bd9 AD |
2030 | return; |
2031 | } | |
2032 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2033 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2034 | } |
2035 | ||
2036 | ||
2037 | /* Invoke the n'th filter function for the current rsfp. */ | |
2038 | I32 | |
864dbfa3 | 2039 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
4e553d73 NIS |
2040 | |
2041 | ||
8ac85365 | 2042 | /* 0 = read one text line */ |
a0d0e21e | 2043 | { |
16d20bd9 AD |
2044 | filter_t funcp; |
2045 | SV *datasv = NULL; | |
e50aee73 | 2046 | |
3280af22 | 2047 | if (!PL_rsfp_filters) |
16d20bd9 | 2048 | return -1; |
3280af22 | 2049 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
2050 | /* Provide a default input filter to make life easy. */ |
2051 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2052 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2053 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2054 | if (maxlen) { |
16d20bd9 AD |
2055 | /* Want a block */ |
2056 | int len ; | |
2057 | int old_len = SvCUR(buf_sv) ; | |
2058 | ||
2059 | /* ensure buf_sv is large enough */ | |
eb160463 | 2060 | SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ; |
3280af22 NIS |
2061 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2062 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2063 | return -1; /* error */ |
2064 | else | |
2065 | return 0 ; /* end of file */ | |
2066 | } | |
16d20bd9 AD |
2067 | SvCUR_set(buf_sv, old_len + len) ; |
2068 | } else { | |
2069 | /* Want a line */ | |
3280af22 NIS |
2070 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2071 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2072 | return -1; /* error */ |
2073 | else | |
2074 | return 0 ; /* end of file */ | |
2075 | } | |
16d20bd9 AD |
2076 | } |
2077 | return SvCUR(buf_sv); | |
2078 | } | |
2079 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 2080 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
2081 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2082 | "filter_read %d: skipped (filter deleted)\n", | |
2083 | idx)); | |
16d20bd9 AD |
2084 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2085 | } | |
2086 | /* Get function pointer hidden within datasv */ | |
4755096e | 2087 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2088 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2089 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2090 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2091 | /* Call function. The function is expected to */ |
2092 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2093 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2094 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2095 | } |
2096 | ||
76e3520e | 2097 | STATIC char * |
cea2e8a9 | 2098 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2099 | { |
c39cd008 | 2100 | #ifdef PERL_CR_FILTER |
3280af22 | 2101 | if (!PL_rsfp_filters) { |
c39cd008 | 2102 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2103 | } |
2104 | #endif | |
3280af22 | 2105 | if (PL_rsfp_filters) { |
16d20bd9 | 2106 | |
55497cff | 2107 | if (!append) |
2108 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2109 | if (FILTER_READ(0, sv, 0) > 0) |
2110 | return ( SvPVX(sv) ) ; | |
2111 | else | |
2112 | return Nullch ; | |
2113 | } | |
9d116dd7 | 2114 | else |
fd049845 | 2115 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2116 | } |
2117 | ||
01ec43d0 GS |
2118 | STATIC HV * |
2119 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2120 | { |
2121 | GV *gv; | |
2122 | ||
01ec43d0 | 2123 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2124 | return PL_curstash; |
2125 | ||
2126 | if (len > 2 && | |
2127 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2128 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2129 | { | |
2130 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2131 | } |
2132 | ||
2133 | /* use constant CLASS => 'MyClass' */ | |
2134 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2135 | SV *sv; | |
2136 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2137 | pkgname = SvPV_nolen(sv); | |
2138 | } | |
2139 | } | |
2140 | ||
2141 | return gv_stashpv(pkgname, FALSE); | |
2142 | } | |
a0d0e21e | 2143 | |
748a9306 LW |
2144 | #ifdef DEBUGGING |
2145 | static char* exp_name[] = | |
09bef843 | 2146 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 2147 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 2148 | }; |
748a9306 | 2149 | #endif |
463ee0b2 | 2150 | |
02aa26ce NT |
2151 | /* |
2152 | yylex | |
2153 | ||
2154 | Works out what to call the token just pulled out of the input | |
2155 | stream. The yacc parser takes care of taking the ops we return and | |
2156 | stitching them into a tree. | |
2157 | ||
2158 | Returns: | |
2159 | PRIVATEREF | |
2160 | ||
2161 | Structure: | |
2162 | if read an identifier | |
2163 | if we're in a my declaration | |
2164 | croak if they tried to say my($foo::bar) | |
2165 | build the ops for a my() declaration | |
2166 | if it's an access to a my() variable | |
2167 | are we in a sort block? | |
2168 | croak if my($a); $a <=> $b | |
2169 | build ops for access to a my() variable | |
2170 | if in a dq string, and they've said @foo and we can't find @foo | |
2171 | croak | |
2172 | build ops for a bareword | |
2173 | if we already built the token before, use it. | |
2174 | */ | |
2175 | ||
dba4d153 | 2176 | #ifdef USE_PURE_BISON |
864dbfa3 | 2177 | int |
dba4d153 | 2178 | Perl_yylex_r(pTHX_ YYSTYPE *lvalp, int *lcharp) |
378cc40b | 2179 | { |
20141f0e IRC |
2180 | int r; |
2181 | ||
6f202aea | 2182 | yyactlevel++; |
20141f0e IRC |
2183 | yylval_pointer[yyactlevel] = lvalp; |
2184 | yychar_pointer[yyactlevel] = lcharp; | |
b73d6f50 IRC |
2185 | if (yyactlevel >= YYMAXLEVEL) |
2186 | Perl_croak(aTHX_ "panic: YYMAXLEVEL"); | |
20141f0e | 2187 | |
dba4d153 | 2188 | r = Perl_yylex(aTHX); |
20141f0e | 2189 | |
d8ae6756 IRC |
2190 | if (yyactlevel > 0) |
2191 | yyactlevel--; | |
20141f0e IRC |
2192 | |
2193 | return r; | |
2194 | } | |
dba4d153 | 2195 | #endif |
20141f0e | 2196 | |
dba4d153 JH |
2197 | #ifdef __SC__ |
2198 | #pragma segment Perl_yylex | |
2199 | #endif | |
dba4d153 | 2200 | int |
dba4d153 | 2201 | Perl_yylex(pTHX) |
20141f0e | 2202 | { |
79072805 | 2203 | register char *s; |
378cc40b | 2204 | register char *d; |
79072805 | 2205 | register I32 tmp; |
463ee0b2 | 2206 | STRLEN len; |
161b471a NIS |
2207 | GV *gv = Nullgv; |
2208 | GV **gvp = 0; | |
aa7440fb | 2209 | bool bof = FALSE; |
1d239bbb | 2210 | I32 orig_keyword = 0; |
a687059c | 2211 | |
02aa26ce | 2212 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2213 | if (PL_pending_ident) |
e930465f | 2214 | return S_pending_ident(aTHX); |
bbce6d69 | 2215 | |
02aa26ce NT |
2216 | /* no identifier pending identification */ |
2217 | ||
3280af22 | 2218 | switch (PL_lex_state) { |
79072805 LW |
2219 | #ifdef COMMENTARY |
2220 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2221 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2222 | break; | |
2223 | #endif | |
2224 | ||
09bef843 | 2225 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2226 | case LEX_KNOWNEXT: |
3280af22 NIS |
2227 | PL_nexttoke--; |
2228 | yylval = PL_nextval[PL_nexttoke]; | |
2229 | if (!PL_nexttoke) { | |
2230 | PL_lex_state = PL_lex_defer; | |
2231 | PL_expect = PL_lex_expect; | |
2232 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2233 | } |
607df283 | 2234 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2235 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2236 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2237 | |
3280af22 | 2238 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2239 | |
02aa26ce | 2240 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2241 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2242 | */ |
79072805 LW |
2243 | case LEX_INTERPCASEMOD: |
2244 | #ifdef DEBUGGING | |
3280af22 | 2245 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2246 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2247 | #endif |
02aa26ce | 2248 | /* handle \E or end of string */ |
3280af22 | 2249 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2250 | char oldmod; |
02aa26ce NT |
2251 | |
2252 | /* if at a \E */ | |
3280af22 NIS |
2253 | if (PL_lex_casemods) { |
2254 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2255 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2256 | |
3280af22 NIS |
2257 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2258 | PL_bufptr += 2; | |
2259 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2260 | } |
79072805 LW |
2261 | return ')'; |
2262 | } | |
3280af22 NIS |
2263 | if (PL_bufptr != PL_bufend) |
2264 | PL_bufptr += 2; | |
2265 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2266 | return yylex(); |
79072805 LW |
2267 | } |
2268 | else { | |
607df283 | 2269 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2270 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2271 | s = PL_bufptr + 1; |
6e909404 JH |
2272 | if (s[1] == '\\' && s[2] == 'E') { |
2273 | PL_bufptr = s + 3; | |
2274 | PL_lex_state = LEX_INTERPCONCAT; | |
2275 | return yylex(); | |
a0d0e21e | 2276 | } |
6e909404 JH |
2277 | else { |
2278 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
2279 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
2280 | if (strchr("LU", *s) && | |
2281 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) { | |
2282 | PL_lex_casestack[--PL_lex_casemods] = '\0'; | |
2283 | return ')'; | |
2284 | } | |
2285 | if (PL_lex_casemods > 10) | |
2286 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2287 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
2288 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2289 | PL_lex_state = LEX_INTERPCONCAT; | |
2290 | PL_nextval[PL_nexttoke].ival = 0; | |
2291 | force_next('('); | |
2292 | if (*s == 'l') | |
2293 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; | |
2294 | else if (*s == 'u') | |
2295 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; | |
2296 | else if (*s == 'L') | |
2297 | PL_nextval[PL_nexttoke].ival = OP_LC; | |
2298 | else if (*s == 'U') | |
2299 | PL_nextval[PL_nexttoke].ival = OP_UC; | |
2300 | else if (*s == 'Q') | |
2301 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; | |
2302 | else | |
2303 | Perl_croak(aTHX_ "panic: yylex"); | |
2304 | PL_bufptr = s + 1; | |
a0d0e21e | 2305 | } |
79072805 | 2306 | force_next(FUNC); |
3280af22 NIS |
2307 | if (PL_lex_starts) { |
2308 | s = PL_bufptr; | |
2309 | PL_lex_starts = 0; | |
79072805 LW |
2310 | Aop(OP_CONCAT); |
2311 | } | |
2312 | else | |
cea2e8a9 | 2313 | return yylex(); |
79072805 LW |
2314 | } |
2315 | ||
55497cff | 2316 | case LEX_INTERPPUSH: |
2317 | return sublex_push(); | |
2318 | ||
79072805 | 2319 | case LEX_INTERPSTART: |
3280af22 | 2320 | if (PL_bufptr == PL_bufend) |
79072805 | 2321 | return sublex_done(); |
607df283 | 2322 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2323 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2324 | PL_expect = XTERM; |
2325 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2326 | PL_lex_state = LEX_INTERPNORMAL; | |
2327 | if (PL_lex_dojoin) { | |
2328 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2329 | force_next(','); |
a0d0e21e | 2330 | force_ident("\"", '$'); |
3280af22 | 2331 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2332 | force_next('$'); |
3280af22 | 2333 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2334 | force_next('('); |
3280af22 | 2335 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2336 | force_next(FUNC); |
2337 | } | |
3280af22 NIS |
2338 | if (PL_lex_starts++) { |
2339 | s = PL_bufptr; | |
79072805 LW |
2340 | Aop(OP_CONCAT); |
2341 | } | |
cea2e8a9 | 2342 | return yylex(); |
79072805 LW |
2343 | |
2344 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2345 | if (intuit_more(PL_bufptr)) { |
2346 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2347 | break; |
2348 | } | |
2349 | /* FALL THROUGH */ | |
2350 | ||
2351 | case LEX_INTERPEND: | |
3280af22 NIS |
2352 | if (PL_lex_dojoin) { |
2353 | PL_lex_dojoin = FALSE; | |
2354 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2355 | return ')'; |
2356 | } | |
43a16006 | 2357 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2358 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2359 | { |
e9fa98b2 | 2360 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2361 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2362 | PL_lex_repl = Nullsv; |
2363 | } | |
79072805 LW |
2364 | /* FALLTHROUGH */ |
2365 | case LEX_INTERPCONCAT: | |
2366 | #ifdef DEBUGGING | |
3280af22 | 2367 | if (PL_lex_brackets) |
cea2e8a9 | 2368 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2369 | #endif |
3280af22 | 2370 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2371 | return sublex_done(); |
2372 | ||
3280af22 NIS |
2373 | if (SvIVX(PL_linestr) == '\'') { |
2374 | SV *sv = newSVsv(PL_linestr); | |
2375 | if (!PL_lex_inpat) | |
76e3520e | 2376 | sv = tokeq(sv); |
3280af22 | 2377 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2378 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2379 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2380 | s = PL_bufend; |
79072805 LW |
2381 | } |
2382 | else { | |
3280af22 | 2383 | s = scan_const(PL_bufptr); |
79072805 | 2384 | if (*s == '\\') |
3280af22 | 2385 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2386 | else |
3280af22 | 2387 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2388 | } |
2389 | ||
3280af22 NIS |
2390 | if (s != PL_bufptr) { |
2391 | PL_nextval[PL_nexttoke] = yylval; | |
2392 | PL_expect = XTERM; | |
79072805 | 2393 | force_next(THING); |
3280af22 | 2394 | if (PL_lex_starts++) |
79072805 LW |
2395 | Aop(OP_CONCAT); |
2396 | else { | |
3280af22 | 2397 | PL_bufptr = s; |
cea2e8a9 | 2398 | return yylex(); |
79072805 LW |
2399 | } |
2400 | } | |
2401 | ||
cea2e8a9 | 2402 | return yylex(); |
a0d0e21e | 2403 | case LEX_FORMLINE: |
3280af22 NIS |
2404 | PL_lex_state = LEX_NORMAL; |
2405 | s = scan_formline(PL_bufptr); | |
2406 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2407 | goto rightbracket; |
2408 | OPERATOR(';'); | |
79072805 LW |
2409 | } |
2410 | ||
3280af22 NIS |
2411 | s = PL_bufptr; |
2412 | PL_oldoldbufptr = PL_oldbufptr; | |
2413 | PL_oldbufptr = s; | |
607df283 | 2414 | DEBUG_T( { |
bf49b057 GS |
2415 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2416 | exp_name[PL_expect], s); | |
5f80b19c | 2417 | } ); |
463ee0b2 LW |
2418 | |
2419 | retry: | |
378cc40b LW |
2420 | switch (*s) { |
2421 | default: | |
7e2040f0 | 2422 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2423 | goto keylookup; |
cea2e8a9 | 2424 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2425 | case 4: |
2426 | case 26: | |
2427 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2428 | case 0: |
3280af22 NIS |
2429 | if (!PL_rsfp) { |
2430 | PL_last_uni = 0; | |
2431 | PL_last_lop = 0; | |
2432 | if (PL_lex_brackets) | |
d98d5fff | 2433 | yyerror("Missing right curly or square bracket"); |
4e553d73 | 2434 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2435 | "### Tokener got EOF\n"); |
5f80b19c | 2436 | } ); |
79072805 | 2437 | TOKEN(0); |
463ee0b2 | 2438 | } |
3280af22 | 2439 | if (s++ < PL_bufend) |
a687059c | 2440 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2441 | PL_last_uni = 0; |
2442 | PL_last_lop = 0; | |
2443 | if (!PL_in_eval && !PL_preambled) { | |
2444 | PL_preambled = TRUE; | |
2445 | sv_setpv(PL_linestr,incl_perldb()); | |
2446 | if (SvCUR(PL_linestr)) | |
2447 | sv_catpv(PL_linestr,";"); | |
2448 | if (PL_preambleav){ | |
2449 | while(AvFILLp(PL_preambleav) >= 0) { | |
2450 | SV *tmpsv = av_shift(PL_preambleav); | |
2451 | sv_catsv(PL_linestr, tmpsv); | |
2452 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2453 | sv_free(tmpsv); |
2454 | } | |
3280af22 NIS |
2455 | sv_free((SV*)PL_preambleav); |
2456 | PL_preambleav = NULL; | |
91b7def8 | 2457 | } |
3280af22 NIS |
2458 | if (PL_minus_n || PL_minus_p) { |
2459 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2460 | if (PL_minus_l) | |
2461 | sv_catpv(PL_linestr,"chomp;"); | |
2462 | if (PL_minus_a) { | |
3280af22 NIS |
2463 | if (PL_minus_F) { |
2464 | if (strchr("/'\"", *PL_splitstr) | |
2465 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
3db68c4c | 2466 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2467 | else { |
2468 | char delim; | |
2469 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2470 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2471 | delim = *s; |
75c72d73 | 2472 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2473 | "q" + (delim == '\''), delim); |
3280af22 | 2474 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2475 | if (*s == '\\') |
3280af22 NIS |
2476 | sv_catpvn(PL_linestr, "\\", 1); |
2477 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2478 | } |
cea2e8a9 | 2479 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2480 | } |
2304df62 AD |
2481 | } |
2482 | else | |
75c72d73 | 2483 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2484 | } |
79072805 | 2485 | } |
3280af22 NIS |
2486 | sv_catpv(PL_linestr, "\n"); |
2487 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2488 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2489 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2490 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2491 | SV *sv = NEWSV(85,0); |
2492 | ||
2493 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2494 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2495 | (void)SvIOK_on(sv); |
2496 | SvIVX(sv) = 0; | |
57843af0 | 2497 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2498 | } |
79072805 | 2499 | goto retry; |
a687059c | 2500 | } |
e929a76b | 2501 | do { |
aa7440fb | 2502 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2503 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2504 | fake_eof: | |
2505 | if (PL_rsfp) { | |
2506 | if (PL_preprocess && !PL_in_eval) | |
2507 | (void)PerlProc_pclose(PL_rsfp); | |
2508 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2509 | PerlIO_clearerr(PL_rsfp); | |
2510 | else | |
2511 | (void)PerlIO_close(PL_rsfp); | |
2512 | PL_rsfp = Nullfp; | |
2513 | PL_doextract = FALSE; | |
2514 | } | |
2515 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2516 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2517 | sv_catpv(PL_linestr,";}"); | |
2518 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2519 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2520 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2521 | PL_minus_n = PL_minus_p = 0; |
2522 | goto retry; | |
2523 | } | |
2524 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2525 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2526 | sv_setpv(PL_linestr,""); |
2527 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2528 | } | |
2529 | /* if it looks like the start of a BOM, check if it in fact is */ | |
2530 | else if (bof && (!*s || *(U8*)s == 0xEF || *(U8*)s >= 0xFE)) { | |
226017aa | 2531 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2532 | # ifdef __GNU_LIBRARY__ |
2533 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2534 | # define FTELL_FOR_PIPE_IS_BROKEN |
2535 | # endif | |
e3f494f1 JH |
2536 | # else |
2537 | # ifdef __GLIBC__ | |
2538 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2539 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2540 | # endif | |
2541 | # endif | |
226017aa DD |
2542 | # endif |
2543 | #endif | |
2544 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2545 | /* This loses the possibility to detect the bof | |
2546 | * situation on perl -P when the libc5 is being used. | |
2547 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2548 | */ | |
2549 | if (!PL_preprocess) | |
7e28d3af | 2550 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2551 | #else |
eb160463 | 2552 | bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr); |
226017aa | 2553 | #endif |
7e28d3af | 2554 | if (bof) { |
3280af22 | 2555 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2556 | s = swallow_bom((U8*)s); |
e929a76b | 2557 | } |
378cc40b | 2558 | } |
3280af22 | 2559 | if (PL_doextract) { |
a0d0e21e LW |
2560 | /* Incest with pod. */ |
2561 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2562 | sv_setpv(PL_linestr, ""); |
2563 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2564 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2565 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2566 | PL_doextract = FALSE; |
a0d0e21e | 2567 | } |
4e553d73 | 2568 | } |
463ee0b2 | 2569 | incline(s); |
3280af22 NIS |
2570 | } while (PL_doextract); |
2571 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2572 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2573 | SV *sv = NEWSV(85,0); |
a687059c | 2574 | |
93a17b20 | 2575 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2576 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2577 | (void)SvIOK_on(sv); |
2578 | SvIVX(sv) = 0; | |
57843af0 | 2579 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2580 | } |
3280af22 | 2581 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2582 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2583 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2584 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2585 | s++; |
a0d0e21e | 2586 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2587 | s++; |
44a8e56a | 2588 | d = Nullch; |
3280af22 | 2589 | if (!PL_in_eval) { |
44a8e56a | 2590 | if (*s == '#' && *(s+1) == '!') |
2591 | d = s + 2; | |
2592 | #ifdef ALTERNATE_SHEBANG | |
2593 | else { | |
2594 | static char as[] = ALTERNATE_SHEBANG; | |
2595 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2596 | d = s + (sizeof(as) - 1); | |
2597 | } | |
2598 | #endif /* ALTERNATE_SHEBANG */ | |
2599 | } | |
2600 | if (d) { | |
b8378b72 | 2601 | char *ipath; |
774d564b | 2602 | char *ipathend; |
b8378b72 | 2603 | |
774d564b | 2604 | while (isSPACE(*d)) |
b8378b72 CS |
2605 | d++; |
2606 | ipath = d; | |
774d564b | 2607 | while (*d && !isSPACE(*d)) |
2608 | d++; | |
2609 | ipathend = d; | |
2610 | ||
2611 | #ifdef ARG_ZERO_IS_SCRIPT | |
2612 | if (ipathend > ipath) { | |
2613 | /* | |
2614 | * HP-UX (at least) sets argv[0] to the script name, | |
2615 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2616 | * at least, set argv[0] to the basename of the Perl | |
2617 | * interpreter. So, having found "#!", we'll set it right. | |
2618 | */ | |
ee2f7564 | 2619 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2620 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2621 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2622 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2623 | SvSETMAGIC(x); |
2624 | } | |
556c1dec JH |
2625 | else { |
2626 | STRLEN blen; | |
2627 | STRLEN llen; | |
2628 | char *bstart = SvPV(CopFILESV(PL_curcop),blen); | |
2629 | char *lstart = SvPV(x,llen); | |
2630 | if (llen < blen) { | |
2631 | bstart += blen - llen; | |
2632 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
2633 | sv_setpvn(x, ipath, ipathend - ipath); | |
2634 | SvSETMAGIC(x); | |
2635 | } | |
2636 | } | |
2637 | } | |
774d564b | 2638 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2639 | } |
774d564b | 2640 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2641 | |
2642 | /* | |
2643 | * Look for options. | |
2644 | */ | |
748a9306 | 2645 | d = instr(s,"perl -"); |
84e30d1a | 2646 | if (!d) { |
748a9306 | 2647 | d = instr(s,"perl"); |
84e30d1a GS |
2648 | #if defined(DOSISH) |
2649 | /* avoid getting into infinite loops when shebang | |
2650 | * line contains "Perl" rather than "perl" */ | |
2651 | if (!d) { | |
2652 | for (d = ipathend-4; d >= ipath; --d) { | |
2653 | if ((*d == 'p' || *d == 'P') | |
2654 | && !ibcmp(d, "perl", 4)) | |
2655 | { | |
2656 | break; | |
2657 | } | |
2658 | } | |
2659 | if (d < ipath) | |
2660 | d = Nullch; | |
2661 | } | |
2662 | #endif | |
2663 | } | |
44a8e56a | 2664 | #ifdef ALTERNATE_SHEBANG |
2665 | /* | |
2666 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2667 | * character that can be part of a Perl expression, then if | |
2668 | * we see it but not "perl", we're probably looking at the | |
2669 | * start of Perl code, not a request to hand off to some | |
2670 | * other interpreter. Similarly, if "perl" is there, but | |
2671 | * not in the first 'word' of the line, we assume the line | |
2672 | * contains the start of the Perl program. | |
44a8e56a | 2673 | */ |
2674 | if (d && *s != '#') { | |
774d564b | 2675 | char *c = ipath; |
44a8e56a | 2676 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2677 | c++; | |
2678 | if (c < d) | |
2679 | d = Nullch; /* "perl" not in first word; ignore */ | |
2680 | else | |
2681 | *s = '#'; /* Don't try to parse shebang line */ | |
2682 | } | |
774d564b | 2683 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2684 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2685 | if (!d && |
44a8e56a | 2686 | *s == '#' && |
774d564b | 2687 | ipathend > ipath && |
3280af22 | 2688 | !PL_minus_c && |
748a9306 | 2689 | !instr(s,"indir") && |
3280af22 | 2690 | instr(PL_origargv[0],"perl")) |
748a9306 | 2691 | { |
9f68db38 | 2692 | char **newargv; |
9f68db38 | 2693 | |
774d564b | 2694 | *ipathend = '\0'; |
2695 | s = ipathend + 1; | |
3280af22 | 2696 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2697 | s++; |
3280af22 NIS |
2698 | if (s < PL_bufend) { |
2699 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2700 | newargv[1] = s; |
3280af22 | 2701 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2702 | s++; |
2703 | *s = '\0'; | |
3280af22 | 2704 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2705 | } |
2706 | else | |
3280af22 | 2707 | newargv = PL_origargv; |
774d564b | 2708 | newargv[0] = ipath; |
b35112e7 | 2709 | PERL_FPU_PRE_EXEC |
b4748376 | 2710 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 2711 | PERL_FPU_POST_EXEC |
cea2e8a9 | 2712 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2713 | } |
bf4acbe4 | 2714 | #endif |
748a9306 | 2715 | if (d) { |
3280af22 NIS |
2716 | U32 oldpdb = PL_perldb; |
2717 | bool oldn = PL_minus_n; | |
2718 | bool oldp = PL_minus_p; | |
748a9306 LW |
2719 | |
2720 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2721 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2722 | |
2723 | if (*d++ == '-') { | |
a11ec5a9 | 2724 | bool switches_done = PL_doswitches; |
8cc95fdb | 2725 | do { |
2726 | if (*d == 'M' || *d == 'm') { | |
2727 | char *m = d; | |
2728 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2729 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2730 | (int)(d - m), m); |
2731 | } | |
2732 | d = moreswitches(d); | |
2733 | } while (d); | |
f0b2cf55 YST |
2734 | if (PL_doswitches && !switches_done) { |
2735 | int argc = PL_origargc; | |
2736 | char **argv = PL_origargv; | |
2737 | do { | |
2738 | argc--,argv++; | |
2739 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2740 | init_argv_symbols(argc,argv); | |
2741 | } | |
155aba94 GS |
2742 | if ((PERLDB_LINE && !oldpdb) || |
2743 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2744 | /* if we have already added "LINE: while (<>) {", |
2745 | we must not do it again */ | |
748a9306 | 2746 | { |
3280af22 NIS |
2747 | sv_setpv(PL_linestr, ""); |
2748 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2749 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2750 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2751 | PL_preambled = FALSE; |
84902520 | 2752 | if (PERLDB_LINE) |
3280af22 | 2753 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2754 | goto retry; |
2755 | } | |
a11ec5a9 RGS |
2756 | if (PL_doswitches && !switches_done) { |
2757 | int argc = PL_origargc; | |
2758 | char **argv = PL_origargv; | |
2759 | do { | |
2760 | argc--,argv++; | |
2761 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2762 | init_argv_symbols(argc,argv); | |
2763 | } | |
a0d0e21e | 2764 | } |
79072805 | 2765 | } |
9f68db38 | 2766 | } |
79072805 | 2767 | } |
3280af22 NIS |
2768 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2769 | PL_bufptr = s; | |
2770 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2771 | return yylex(); |
ae986130 | 2772 | } |
378cc40b | 2773 | goto retry; |
4fdae800 | 2774 | case '\r': |
6a27c188 | 2775 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2776 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2777 | Perl_croak(aTHX_ |
cc507455 | 2778 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2779 | #endif |
4fdae800 | 2780 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2781 | #ifdef MACOS_TRADITIONAL |
2782 | case '\312': | |
2783 | #endif | |
378cc40b LW |
2784 | s++; |
2785 | goto retry; | |
378cc40b | 2786 | case '#': |
e929a76b | 2787 | case '\n': |
3280af22 | 2788 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2789 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2790 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2791 | CopLINE_dec(PL_curcop); | |
2792 | incline(s); | |
2793 | } | |
3280af22 | 2794 | d = PL_bufend; |
a687059c | 2795 | while (s < d && *s != '\n') |
378cc40b | 2796 | s++; |
0f85fab0 | 2797 | if (s < d) |
378cc40b | 2798 | s++; |
78c267c1 | 2799 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2800 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2801 | incline(s); |
3280af22 NIS |
2802 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2803 | PL_bufptr = s; | |
2804 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2805 | return yylex(); |
a687059c | 2806 | } |
378cc40b | 2807 | } |
a687059c | 2808 | else { |
378cc40b | 2809 | *s = '\0'; |
3280af22 | 2810 | PL_bufend = s; |
a687059c | 2811 | } |
378cc40b LW |
2812 | goto retry; |
2813 | case '-': | |
79072805 | 2814 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2815 | I32 ftst = 0; |
2816 | ||
378cc40b | 2817 | s++; |
3280af22 | 2818 | PL_bufptr = s; |
748a9306 LW |
2819 | tmp = *s++; |
2820 | ||
bf4acbe4 | 2821 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2822 | s++; |
2823 | ||
2824 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2825 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2826 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2827 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2828 | } ); |
748a9306 LW |
2829 | OPERATOR('-'); /* unary minus */ |
2830 | } | |
3280af22 | 2831 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2832 | switch (tmp) { |
e5edeb50 JH |
2833 | case 'r': ftst = OP_FTEREAD; break; |
2834 | case 'w': ftst = OP_FTEWRITE; break; | |
2835 | case 'x': ftst = OP_FTEEXEC; break; | |
2836 | case 'o': ftst = OP_FTEOWNED; break; | |
2837 | case 'R': ftst = OP_FTRREAD; break; | |
2838 | case 'W': ftst = OP_FTRWRITE; break; | |
2839 | case 'X': ftst = OP_FTREXEC; break; | |
2840 | case 'O': ftst = OP_FTROWNED; break; | |
2841 | case 'e': ftst = OP_FTIS; break; | |
2842 | case 'z': ftst = OP_FTZERO; break; | |
2843 | case 's': ftst = OP_FTSIZE; break; | |
2844 | case 'f': ftst = OP_FTFILE; break; | |
2845 | case 'd': ftst = OP_FTDIR; break; | |
2846 | case 'l': ftst = OP_FTLINK; break; | |
2847 | case 'p': ftst = OP_FTPIPE; break; | |
2848 | case 'S': ftst = OP_FTSOCK; break; | |
2849 | case 'u': ftst = OP_FTSUID; break; | |
2850 | case 'g': ftst = OP_FTSGID; break; | |
2851 | case 'k': ftst = OP_FTSVTX; break; | |
2852 | case 'b': ftst = OP_FTBLK; break; | |
2853 | case 'c': ftst = OP_FTCHR; break; | |
2854 | case 't': ftst = OP_FTTTY; break; | |
2855 | case 'T': ftst = OP_FTTEXT; break; | |
2856 | case 'B': ftst = OP_FTBINARY; break; | |
2857 | case 'M': case 'A': case 'C': | |
2858 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2859 | switch (tmp) { | |
2860 | case 'M': ftst = OP_FTMTIME; break; | |
2861 | case 'A': ftst = OP_FTATIME; break; | |
2862 | case 'C': ftst = OP_FTCTIME; break; | |
2863 | default: break; | |
2864 | } | |
2865 | break; | |
378cc40b | 2866 | default: |
378cc40b LW |
2867 | break; |
2868 | } | |
e5edeb50 | 2869 | if (ftst) { |
eb160463 | 2870 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 2871 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 2872 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 2873 | } ); |
e5edeb50 JH |
2874 | FTST(ftst); |
2875 | } | |
2876 | else { | |
2877 | /* Assume it was a minus followed by a one-letter named | |
2878 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 2879 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 RB |
2880 | "### %c looked like a file test but was not\n", |
2881 | (int)ftst); | |
5f80b19c | 2882 | } ); |
e5edeb50 JH |
2883 | s -= 2; |
2884 | } | |
378cc40b | 2885 | } |
a687059c LW |
2886 | tmp = *s++; |
2887 | if (*s == tmp) { | |
2888 | s++; | |
3280af22 | 2889 | if (PL_expect == XOPERATOR) |
79072805 LW |
2890 | TERM(POSTDEC); |
2891 | else | |
2892 | OPERATOR(PREDEC); | |
2893 | } | |
2894 | else if (*s == '>') { | |
2895 | s++; | |
2896 | s = skipspace(s); | |
7e2040f0 | 2897 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2898 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2899 | TOKEN(ARROW); |
79072805 | 2900 | } |
748a9306 LW |
2901 | else if (*s == '$') |
2902 | OPERATOR(ARROW); | |
463ee0b2 | 2903 | else |
748a9306 | 2904 | TERM(ARROW); |
a687059c | 2905 | } |
3280af22 | 2906 | if (PL_expect == XOPERATOR) |
79072805 LW |
2907 | Aop(OP_SUBTRACT); |
2908 | else { | |
3280af22 | 2909 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2910 | check_uni(); |
79072805 | 2911 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2912 | } |
79072805 | 2913 | |
378cc40b | 2914 | case '+': |
a687059c LW |
2915 | tmp = *s++; |
2916 | if (*s == tmp) { | |
378cc40b | 2917 | s++; |
3280af22 | 2918 | if (PL_expect == XOPERATOR) |
79072805 LW |
2919 | TERM(POSTINC); |
2920 | else | |
2921 | OPERATOR(PREINC); | |
378cc40b | 2922 | } |
3280af22 | 2923 | if (PL_expect == XOPERATOR) |
79072805 LW |
2924 | Aop(OP_ADD); |
2925 | else { | |
3280af22 | 2926 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2927 | check_uni(); |
a687059c | 2928 | OPERATOR('+'); |
2f3197b3 | 2929 | } |
a687059c | 2930 | |
378cc40b | 2931 | case '*': |
3280af22 NIS |
2932 | if (PL_expect != XOPERATOR) { |
2933 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2934 | PL_expect = XOPERATOR; | |
2935 | force_ident(PL_tokenbuf, '*'); | |
2936 | if (!*PL_tokenbuf) | |
a0d0e21e | 2937 | PREREF('*'); |
79072805 | 2938 | TERM('*'); |
a687059c | 2939 | } |
79072805 LW |
2940 | s++; |
2941 | if (*s == '*') { | |
a687059c | 2942 | s++; |
79072805 | 2943 | PWop(OP_POW); |
a687059c | 2944 | } |
79072805 LW |
2945 | Mop(OP_MULTIPLY); |
2946 | ||
378cc40b | 2947 | case '%': |
3280af22 | 2948 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2949 | ++s; |
2950 | Mop(OP_MODULO); | |
a687059c | 2951 | } |
3280af22 NIS |
2952 | PL_tokenbuf[0] = '%'; |
2953 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2954 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 2955 | PREREF('%'); |
a687059c | 2956 | } |
3280af22 | 2957 | PL_pending_ident = '%'; |
bbce6d69 | 2958 | TERM('%'); |
a687059c | 2959 | |
378cc40b | 2960 | case '^': |
79072805 | 2961 | s++; |
a0d0e21e | 2962 | BOop(OP_BIT_XOR); |
79072805 | 2963 | case '[': |
3280af22 | 2964 | PL_lex_brackets++; |
79072805 | 2965 | /* FALL THROUGH */ |
378cc40b | 2966 | case '~': |
378cc40b | 2967 | case ',': |
378cc40b LW |
2968 | tmp = *s++; |
2969 | OPERATOR(tmp); | |
a0d0e21e LW |
2970 | case ':': |
2971 | if (s[1] == ':') { | |
2972 | len = 0; | |
2973 | goto just_a_word; | |
2974 | } | |
2975 | s++; | |
09bef843 SB |
2976 | switch (PL_expect) { |
2977 | OP *attrs; | |
2978 | case XOPERATOR: | |
2979 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2980 | break; | |
2981 | PL_bufptr = s; /* update in case we back off */ | |
2982 | goto grabattrs; | |
2983 | case XATTRBLOCK: | |
2984 | PL_expect = XBLOCK; | |
2985 | goto grabattrs; | |
2986 | case XATTRTERM: | |
2987 | PL_expect = XTERMBLOCK; | |
2988 | grabattrs: | |
2989 | s = skipspace(s); | |
2990 | attrs = Nullop; | |
7e2040f0 | 2991 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2992 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2993 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2994 | if (tmp < 0) tmp = -tmp; | |
2995 | switch (tmp) { | |
2996 | case KEY_or: | |
2997 | case KEY_and: | |
c963b151 | 2998 | case KEY_err: |
f9829d6b GS |
2999 | case KEY_for: |
3000 | case KEY_unless: | |
3001 | case KEY_if: | |
3002 | case KEY_while: | |
3003 | case KEY_until: | |
3004 | goto got_attrs; | |
3005 | default: | |
3006 | break; | |
3007 | } | |
3008 | } | |
09bef843 SB |
3009 | if (*d == '(') { |
3010 | d = scan_str(d,TRUE,TRUE); | |
3011 | if (!d) { | |
09bef843 SB |
3012 | /* MUST advance bufptr here to avoid bogus |
3013 | "at end of line" context messages from yyerror(). | |
3014 | */ | |
3015 | PL_bufptr = s + len; | |
3016 | yyerror("Unterminated attribute parameter in attribute list"); | |
3017 | if (attrs) | |
3018 | op_free(attrs); | |
3019 | return 0; /* EOF indicator */ | |
3020 | } | |
3021 | } | |
3022 | if (PL_lex_stuff) { | |
3023 | SV *sv = newSVpvn(s, len); | |
3024 | sv_catsv(sv, PL_lex_stuff); | |
3025 | attrs = append_elem(OP_LIST, attrs, | |
3026 | newSVOP(OP_CONST, 0, sv)); | |
3027 | SvREFCNT_dec(PL_lex_stuff); | |
3028 | PL_lex_stuff = Nullsv; | |
3029 | } | |
3030 | else { | |
d3cea301 SB |
3031 | /* NOTE: any CV attrs applied here need to be part of |
3032 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
78f9721b SM |
3033 | if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
3034 | CvLVALUE_on(PL_compcv); | |
3035 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3036 | CvLOCKED_on(PL_compcv); | |
3037 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3038 | CvMETHOD_on(PL_compcv); | |
06492da6 SF |
3039 | else if (!PL_in_my && len == 9 && strnEQ(s, "assertion", len)) |
3040 | CvASSERTION_on(PL_compcv); | |
87ecf892 | 3041 | #ifdef USE_ITHREADS |
d3cea301 SB |
3042 | else if (PL_in_my == KEY_our && len == 6 && |
3043 | strnEQ(s, "unique", len)) | |
7fb37951 | 3044 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); |
87ecf892 | 3045 | #endif |
78f9721b SM |
3046 | /* After we've set the flags, it could be argued that |
3047 | we don't need to do the attributes.pm-based setting | |
3048 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
3049 | flags. To experiment with that, uncomment the |
3050 | following "else". (Note that's already been | |
3051 | uncommented. That keeps the above-applied built-in | |
3052 | attributes from being intercepted (and possibly | |
3053 | rejected) by a package's attribute routines, but is | |
3054 | justified by the performance win for the common case | |
3055 | of applying only built-in attributes.) */ | |
0256094b | 3056 | else |
78f9721b SM |
3057 | attrs = append_elem(OP_LIST, attrs, |
3058 | newSVOP(OP_CONST, 0, | |
3059 | newSVpvn(s, len))); | |
09bef843 SB |
3060 | } |
3061 | s = skipspace(d); | |
0120eecf | 3062 | if (*s == ':' && s[1] != ':') |
09bef843 | 3063 | s = skipspace(s+1); |
0120eecf GS |
3064 | else if (s == d) |
3065 | break; /* require real whitespace or :'s */ | |
09bef843 | 3066 | } |
f9829d6b | 3067 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
8e7ae056 | 3068 | if (*s != ';' && *s != '}' && *s != tmp && (tmp != '=' || *s != ')')) { |
09bef843 SB |
3069 | char q = ((*s == '\'') ? '"' : '\''); |
3070 | /* If here for an expression, and parsed no attrs, back off. */ | |
3071 | if (tmp == '=' && !attrs) { | |
3072 | s = PL_bufptr; | |
3073 | break; | |
3074 | } | |
3075 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3076 | context messages from yyerror(). | |
3077 | */ | |
3078 | PL_bufptr = s; | |
3079 | if (!*s) | |
3080 | yyerror("Unterminated attribute list"); | |
3081 | else | |
3082 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3083 | q, *s, q)); | |
3084 | if (attrs) | |
3085 | op_free(attrs); | |
3086 | OPERATOR(':'); | |
3087 | } | |
f9829d6b | 3088 | got_attrs: |
09bef843 SB |
3089 | if (attrs) { |
3090 | PL_nextval[PL_nexttoke].opval = attrs; | |
3091 | force_next(THING); | |
3092 | } | |
3093 | TOKEN(COLONATTR); | |
3094 | } | |
a0d0e21e | 3095 | OPERATOR(':'); |
8990e307 LW |
3096 | case '(': |
3097 | s++; | |
3280af22 NIS |
3098 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3099 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3100 | else |
3280af22 | 3101 | PL_expect = XTERM; |
4a202259 | 3102 | s = skipspace(s); |
a0d0e21e | 3103 | TOKEN('('); |
378cc40b | 3104 | case ';': |
f4dd75d9 | 3105 | CLINE; |
378cc40b LW |
3106 | tmp = *s++; |
3107 | OPERATOR(tmp); | |
3108 | case ')': | |
378cc40b | 3109 | tmp = *s++; |
16d20bd9 AD |
3110 | s = skipspace(s); |
3111 | if (*s == '{') | |
3112 | PREBLOCK(tmp); | |
378cc40b | 3113 | TERM(tmp); |
79072805 LW |
3114 | case ']': |
3115 | s++; | |
3280af22 | 3116 | if (PL_lex_brackets <= 0) |
d98d5fff | 3117 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3118 | else |
3280af22 NIS |
3119 | --PL_lex_brackets; |
3120 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3121 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3122 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3123 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3124 | } |
3125 | } | |
4633a7c4 | 3126 | TERM(']'); |
79072805 LW |
3127 | case '{': |
3128 | leftbracket: | |
79072805 | 3129 | s++; |
3280af22 | 3130 | if (PL_lex_brackets > 100) { |
8edd5f42 | 3131 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 3132 | } |
3280af22 | 3133 | switch (PL_expect) { |
a0d0e21e | 3134 | case XTERM: |
3280af22 | 3135 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3136 | s--; |
3137 | PRETERMBLOCK(DO); | |
3138 | } | |
3280af22 NIS |
3139 | if (PL_oldoldbufptr == PL_last_lop) |
3140 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3141 | else |
3280af22 | 3142 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3143 | OPERATOR(HASHBRACK); |
a0d0e21e | 3144 | case XOPERATOR: |
bf4acbe4 | 3145 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3146 | s++; |
44a8e56a | 3147 | d = s; |
3280af22 NIS |
3148 | PL_tokenbuf[0] = '\0'; |
3149 | if (d < PL_bufend && *d == '-') { | |
3150 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3151 | d++; |
bf4acbe4 | 3152 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3153 | d++; |
3154 | } | |
7e2040f0 | 3155 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3156 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3157 | FALSE, &len); |
bf4acbe4 | 3158 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3159 | d++; |
3160 | if (*d == '}') { | |
3280af22 | 3161 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3162 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3163 | if (minus) | |
3164 | force_next('-'); | |
748a9306 LW |
3165 | } |
3166 | } | |
3167 | /* FALL THROUGH */ | |
09bef843 | 3168 | case XATTRBLOCK: |
748a9306 | 3169 | case XBLOCK: |
3280af22 NIS |
3170 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3171 | PL_expect = XSTATE; | |
a0d0e21e | 3172 | break; |
09bef843 | 3173 | case XATTRTERM: |
a0d0e21e | 3174 | case XTERMBLOCK: |
3280af22 NIS |
3175 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3176 | PL_expect = XSTATE; | |
a0d0e21e LW |
3177 | break; |
3178 | default: { | |
3179 | char *t; | |
3280af22 NIS |
3180 | if (PL_oldoldbufptr == PL_last_lop) |
3181 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3182 | else |
3280af22 | 3183 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3184 | s = skipspace(s); |
8452ff4b SB |
3185 | if (*s == '}') { |
3186 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3187 | PL_expect = XTERM; | |
3188 | /* This hack is to get the ${} in the message. */ | |
3189 | PL_bufptr = s+1; | |
3190 | yyerror("syntax error"); | |
3191 | break; | |
3192 | } | |
a0d0e21e | 3193 | OPERATOR(HASHBRACK); |
8452ff4b | 3194 | } |
b8a4b1be GS |
3195 | /* This hack serves to disambiguate a pair of curlies |
3196 | * as being a block or an anon hash. Normally, expectation | |
3197 | * determines that, but in cases where we're not in a | |
3198 | * position to expect anything in particular (like inside | |
3199 | * eval"") we have to resolve the ambiguity. This code | |
3200 | * covers the case where the first term in the curlies is a | |
3201 | * quoted string. Most other cases need to be explicitly | |
3202 | * disambiguated by prepending a `+' before the opening | |
3203 | * curly in order to force resolution as an anon hash. | |
3204 | * | |
3205 | * XXX should probably propagate the outer expectation | |
3206 | * into eval"" to rely less on this hack, but that could | |
3207 | * potentially break current behavior of eval"". | |
3208 | * GSAR 97-07-21 | |
3209 | */ | |
3210 | t = s; | |
3211 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3212 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3213 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3214 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3215 | t++; | |
3216 | t++; | |
a0d0e21e | 3217 | } |
b8a4b1be | 3218 | else if (*s == 'q') { |
3280af22 | 3219 | if (++t < PL_bufend |
b8a4b1be | 3220 | && (!isALNUM(*t) |
3280af22 | 3221 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3222 | && !isALNUM(*t)))) |
3223 | { | |
abc667d1 | 3224 | /* skip q//-like construct */ |
b8a4b1be GS |
3225 | char *tmps; |
3226 | char open, close, term; | |
3227 | I32 brackets = 1; | |
3228 | ||
3280af22 | 3229 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 3230 | t++; |
abc667d1 DM |
3231 | /* check for q => */ |
3232 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
3233 | OPERATOR(HASHBRACK); | |
3234 | } | |
b8a4b1be GS |
3235 | term = *t; |
3236 | open = term; | |
3237 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3238 | term = tmps[5]; | |
3239 | close = term; | |
3240 | if (open == close) | |
3280af22 NIS |
3241 | for (t++; t < PL_bufend; t++) { |
3242 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3243 | t++; |
6d07e5e9 | 3244 | else if (*t == open) |
b8a4b1be GS |
3245 | break; |
3246 | } | |
abc667d1 | 3247 | else { |
3280af22 NIS |
3248 | for (t++; t < PL_bufend; t++) { |
3249 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3250 | t++; |
6d07e5e9 | 3251 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3252 | break; |
3253 | else if (*t == open) | |
3254 | brackets++; | |
3255 | } | |
abc667d1 DM |
3256 | } |
3257 | t++; | |
b8a4b1be | 3258 | } |
abc667d1 DM |
3259 | else |
3260 | /* skip plain q word */ | |
3261 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
3262 | t += UTF8SKIP(t); | |
a0d0e21e | 3263 | } |
7e2040f0 | 3264 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3265 | t += UTF8SKIP(t); |
7e2040f0 | 3266 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3267 | t += UTF8SKIP(t); |
a0d0e21e | 3268 | } |
3280af22 | 3269 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3270 | t++; |
b8a4b1be GS |
3271 | /* if comma follows first term, call it an anon hash */ |
3272 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3273 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3274 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3275 | OPERATOR(HASHBRACK); |
3280af22 | 3276 | if (PL_expect == XREF) |
4e4e412b | 3277 | PL_expect = XTERM; |
a0d0e21e | 3278 | else { |
3280af22 NIS |
3279 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3280 | PL_expect = XSTATE; | |
a0d0e21e | 3281 | } |
8990e307 | 3282 | } |
a0d0e21e | 3283 | break; |
463ee0b2 | 3284 | } |
57843af0 | 3285 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3286 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3287 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3288 | TOKEN('{'); |
378cc40b | 3289 | case '}': |
79072805 LW |
3290 | rightbracket: |
3291 | s++; | |
3280af22 | 3292 | if (PL_lex_brackets <= 0) |
d98d5fff | 3293 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3294 | else |
3280af22 | 3295 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3296 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3297 | PL_lex_formbrack = 0; |
3298 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3299 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3300 | if (PL_expect & XFAKEBRACK) { |
3301 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3302 | PL_lex_state = LEX_INTERPEND; |
3303 | PL_bufptr = s; | |
cea2e8a9 | 3304 | return yylex(); /* ignore fake brackets */ |
79072805 | 3305 | } |
fa83b5b6 | 3306 | if (*s == '-' && s[1] == '>') |
3280af22 | 3307 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3308 | else if (*s != '[' && *s != '{') |
3280af22 | 3309 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3310 | } |
3311 | } | |
9059aa12 LW |
3312 | if (PL_expect & XFAKEBRACK) { |
3313 | PL_expect &= XENUMMASK; | |
3280af22 | 3314 | PL_bufptr = s; |
cea2e8a9 | 3315 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3316 | } |
79072805 LW |
3317 | force_next('}'); |
3318 | TOKEN(';'); | |
378cc40b LW |
3319 | case '&': |
3320 | s++; | |
3321 | tmp = *s++; | |
3322 | if (tmp == '&') | |
a0d0e21e | 3323 | AOPERATOR(ANDAND); |
378cc40b | 3324 | s--; |
3280af22 | 3325 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3326 | if (ckWARN(WARN_SEMICOLON) |
3327 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3328 | { | |
57843af0 | 3329 | CopLINE_dec(PL_curcop); |
9014280d | 3330 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3331 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3332 | } |
79072805 | 3333 | BAop(OP_BIT_AND); |
463ee0b2 | 3334 | } |
79072805 | 3335 | |
3280af22 NIS |
3336 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3337 | if (*PL_tokenbuf) { | |
3338 | PL_expect = XOPERATOR; | |
3339 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3340 | } |
79072805 LW |
3341 | else |
3342 | PREREF('&'); | |
c07a80fd | 3343 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3344 | TERM('&'); |
3345 | ||
378cc40b LW |
3346 | case '|': |
3347 | s++; | |
3348 | tmp = *s++; | |
3349 | if (tmp == '|') | |
a0d0e21e | 3350 | AOPERATOR(OROR); |
378cc40b | 3351 | s--; |
79072805 | 3352 | BOop(OP_BIT_OR); |
378cc40b LW |
3353 | case '=': |
3354 | s++; | |
3355 | tmp = *s++; | |
3356 | if (tmp == '=') | |
79072805 LW |
3357 | Eop(OP_EQ); |
3358 | if (tmp == '>') | |
3359 | OPERATOR(','); | |
378cc40b | 3360 | if (tmp == '~') |
79072805 | 3361 | PMop(OP_MATCH); |
599cee73 | 3362 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
9014280d | 3363 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Reversed %c= operator",(int)tmp); |
378cc40b | 3364 | s--; |
3280af22 NIS |
3365 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3366 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3367 | { |
3280af22 NIS |
3368 | if (PL_in_eval && !PL_rsfp) { |
3369 | d = PL_bufend; | |
a5f75d66 AD |
3370 | while (s < d) { |
3371 | if (*s++ == '\n') { | |
3372 | incline(s); | |
3373 | if (strnEQ(s,"=cut",4)) { | |
3374 | s = strchr(s,'\n'); | |
3375 | if (s) | |
3376 | s++; | |
3377 | else | |
3378 | s = d; | |
3379 | incline(s); | |
3380 | goto retry; | |
3381 | } | |
3382 | } | |
3383 | } | |
3384 | goto retry; | |
3385 | } | |
3280af22 NIS |
3386 | s = PL_bufend; |
3387 | PL_doextract = TRUE; | |
a0d0e21e LW |
3388 | goto retry; |
3389 | } | |
3280af22 | 3390 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3391 | char *t; |
51882d45 | 3392 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3393 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3394 | #else |
bf4acbe4 | 3395 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3396 | #endif |
a0d0e21e LW |
3397 | if (*t == '\n' || *t == '#') { |
3398 | s--; | |
3280af22 | 3399 | PL_expect = XBLOCK; |
a0d0e21e LW |
3400 | goto leftbracket; |
3401 | } | |
79072805 | 3402 | } |
a0d0e21e LW |
3403 | yylval.ival = 0; |
3404 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3405 | case '!': |
3406 | s++; | |
3407 | tmp = *s++; | |
3408 | if (tmp == '=') | |
79072805 | 3409 | Eop(OP_NE); |
378cc40b | 3410 | if (tmp == '~') |
79072805 | 3411 | PMop(OP_NOT); |
378cc40b LW |
3412 | s--; |
3413 | OPERATOR('!'); | |
3414 | case '<': | |
3280af22 | 3415 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3416 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3417 | check_uni(); |
79072805 LW |
3418 | if (s[1] == '<') |
3419 | s = scan_heredoc(s); | |
3420 | else | |
3421 | s = scan_inputsymbol(s); | |
3422 | TERM(sublex_start()); | |
378cc40b LW |
3423 | } |
3424 | s++; | |
3425 | tmp = *s++; | |
3426 | if (tmp == '<') | |
79072805 | 3427 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3428 | if (tmp == '=') { |
3429 | tmp = *s++; | |
3430 | if (tmp == '>') | |
79072805 | 3431 | Eop(OP_NCMP); |
395c3793 | 3432 | s--; |
79072805 | 3433 | Rop(OP_LE); |
395c3793 | 3434 | } |
378cc40b | 3435 | s--; |
79072805 | 3436 | Rop(OP_LT); |
378cc40b LW |
3437 | case '>': |
3438 | s++; | |
3439 | tmp = *s++; | |
3440 | if (tmp == '>') | |
79072805 | 3441 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3442 | if (tmp == '=') |
79072805 | 3443 | Rop(OP_GE); |
378cc40b | 3444 | s--; |
79072805 | 3445 | Rop(OP_GT); |
378cc40b LW |
3446 | |
3447 | case '$': | |
bbce6d69 | 3448 | CLINE; |
3449 | ||
3280af22 NIS |
3450 | if (PL_expect == XOPERATOR) { |
3451 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3452 | PL_expect = XTERM; | |
a0d0e21e | 3453 | depcom(); |
bbce6d69 | 3454 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3455 | } |
8990e307 | 3456 | } |
a0d0e21e | 3457 | |
7e2040f0 | 3458 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3459 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3460 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3461 | sizeof PL_tokenbuf - 1, FALSE); | |
3462 | if (PL_expect == XOPERATOR) | |
3463 | no_op("Array length", s); | |
3280af22 | 3464 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3465 | PREREF(DOLSHARP); |
3280af22 NIS |
3466 | PL_expect = XOPERATOR; |
3467 | PL_pending_ident = '#'; | |
463ee0b2 | 3468 | TOKEN(DOLSHARP); |
79072805 | 3469 | } |
bbce6d69 | 3470 | |
3280af22 | 3471 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3472 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3473 | sizeof PL_tokenbuf - 1, FALSE); | |
3474 | if (PL_expect == XOPERATOR) | |
3475 | no_op("Scalar", s); | |
3280af22 NIS |
3476 | if (!PL_tokenbuf[1]) { |
3477 | if (s == PL_bufend) | |
bbce6d69 | 3478 | yyerror("Final $ should be \\$ or $name"); |
3479 | PREREF('$'); | |
8990e307 | 3480 | } |
a0d0e21e | 3481 | |
bbce6d69 | 3482 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3483 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3484 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3485 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3486 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3487 | TERM(THING); | |
3488 | } | |
3489 | ||
ff68c719 | 3490 | d = s; |
69d2bceb | 3491 | tmp = (I32)*s; |
3280af22 | 3492 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3493 | s = skipspace(s); |
3494 | ||
3280af22 | 3495 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3496 | char *t; |
3497 | if (*s == '[') { | |
3280af22 | 3498 | PL_tokenbuf[0] = '@'; |
599cee73 | 3499 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3500 | for(t = s + 1; |
7e2040f0 | 3501 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3502 | t++) ; |
a0d0e21e | 3503 | if (*t++ == ',') { |
3280af22 NIS |
3504 | PL_bufptr = skipspace(PL_bufptr); |
3505 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3506 | t++; |
9014280d | 3507 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 PM |
3508 | "Multidimensional syntax %.*s not supported", |
3509 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3510 | } |
3511 | } | |
bbce6d69 | 3512 | } |
3513 | else if (*s == '{') { | |
3280af22 | 3514 | PL_tokenbuf[0] = '%'; |
599cee73 | 3515 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3516 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3517 | { | |
3280af22 | 3518 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3519 | STRLEN len; |
3520 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3521 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3522 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3523 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3524 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
9014280d | 3525 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3526 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3527 | } |
93a17b20 LW |
3528 | } |
3529 | } | |
2f3197b3 | 3530 | } |
bbce6d69 | 3531 | |
3280af22 | 3532 | PL_expect = XOPERATOR; |
69d2bceb | 3533 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3534 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3535 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3536 | PL_expect = XOPERATOR; | |
bbce6d69 | 3537 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3538 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3539 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3540 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3541 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3542 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3543 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3544 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3545 | /* binary operators exclude handle interpretations */ |
3546 | switch (tmp) { | |
3547 | case -KEY_x: | |
3548 | case -KEY_eq: | |
3549 | case -KEY_ne: | |
3550 | case -KEY_gt: | |
3551 | case -KEY_lt: | |
3552 | case -KEY_ge: | |
3553 | case -KEY_le: | |
3554 | case -KEY_cmp: | |
3555 | break; | |
3556 | default: | |
3280af22 | 3557 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3558 | break; |
3559 | } | |
3560 | } | |
68dc0745 | 3561 | else { |
3562 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3563 | if (gv && GvCVu(gv)) | |
3280af22 | 3564 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3565 | } |
93a17b20 | 3566 | } |
bbce6d69 | 3567 | else if (isDIGIT(*s)) |
3280af22 | 3568 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3569 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3570 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
c963b151 BD |
3571 | else if (strchr("?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3572 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
7ce6e6b9 RGS |
3573 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' && s[1] != '/') |
3574 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
3575 | XXX except DORDOR operator */ | |
e0587a03 | 3576 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3577 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3578 | } |
3280af22 | 3579 | PL_pending_ident = '$'; |
79072805 | 3580 | TOKEN('$'); |
378cc40b LW |
3581 | |
3582 | case '@': | |
3280af22 | 3583 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3584 | no_op("Array", s); |
3280af22 NIS |
3585 | PL_tokenbuf[0] = '@'; |
3586 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3587 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3588 | PREREF('@'); |
3589 | } | |
3280af22 | 3590 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3591 | s = skipspace(s); |
3280af22 | 3592 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3593 | if (*s == '{') |
3280af22 | 3594 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3595 | |
3596 | /* Warn about @ where they meant $. */ | |
599cee73 | 3597 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3598 | if (*s == '[' || *s == '{') { |
3599 | char *t = s + 1; | |
7e2040f0 | 3600 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3601 | t++; |
3602 | if (*t == '}' || *t == ']') { | |
3603 | t++; | |
3280af22 | 3604 | PL_bufptr = skipspace(PL_bufptr); |
9014280d | 3605 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3606 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3607 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3608 | } |
93a17b20 LW |
3609 | } |
3610 | } | |
463ee0b2 | 3611 | } |
3280af22 | 3612 | PL_pending_ident = '@'; |
79072805 | 3613 | TERM('@'); |
378cc40b | 3614 | |
c963b151 | 3615 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 RGS |
3616 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
3617 | s += 2; | |
3618 | AOPERATOR(DORDOR); | |
3619 | } | |
c963b151 BD |
3620 | case '?': /* may either be conditional or pattern */ |
3621 | if(PL_expect == XOPERATOR) { | |
3622 | tmp = *s++; | |
3623 | if(tmp == '?') { | |
3624 | OPERATOR('?'); | |
3625 | } | |
3626 | else { | |
3627 | tmp = *s++; | |
3628 | if(tmp == '/') { | |
3629 | /* A // operator. */ | |
3630 | AOPERATOR(DORDOR); | |
3631 | } | |
3632 | else { | |
3633 | s--; | |
3634 | Mop(OP_DIVIDE); | |
3635 | } | |
3636 | } | |
3637 | } | |
3638 | else { | |
3639 | /* Disable warning on "study /blah/" */ | |
3640 | if (PL_oldoldbufptr == PL_last_uni | |
3641 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
3642 | || memNE(PL_last_uni, "study", 5) | |
3643 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
3644 | )) | |
3645 | check_uni(); | |
3646 | s = scan_pat(s,OP_MATCH); | |
3647 | TERM(sublex_start()); | |
3648 | } | |
378cc40b LW |
3649 | |
3650 | case '.': | |
51882d45 GS |
3651 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3652 | #ifdef PERL_STRICT_CR | |
3653 | && s[1] == '\n' | |
3654 | #else | |
3655 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3656 | #endif | |
3657 | && (s == PL_linestart || s[-1] == '\n') ) | |
3658 | { | |
3280af22 NIS |
3659 | PL_lex_formbrack = 0; |
3660 | PL_expect = XSTATE; | |
79072805 LW |
3661 | goto rightbracket; |
3662 | } | |
3280af22 | 3663 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3664 | tmp = *s++; |
a687059c LW |
3665 | if (*s == tmp) { |
3666 | s++; | |
2f3197b3 LW |
3667 | if (*s == tmp) { |
3668 | s++; | |
79072805 | 3669 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3670 | } |
3671 | else | |
79072805 | 3672 | yylval.ival = 0; |
378cc40b | 3673 | OPERATOR(DOTDOT); |
a687059c | 3674 | } |
3280af22 | 3675 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3676 | check_uni(); |
79072805 | 3677 | Aop(OP_CONCAT); |
378cc40b LW |
3678 | } |
3679 | /* FALL THROUGH */ | |
3680 | case '0': case '1': case '2': case '3': case '4': | |
3681 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3682 | s = scan_num(s, &yylval); |
4e553d73 | 3683 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3684 | "### Saw number in '%s'\n", s); |
5f80b19c | 3685 | } ); |
3280af22 | 3686 | if (PL_expect == XOPERATOR) |
8990e307 | 3687 | no_op("Number",s); |
79072805 LW |
3688 | TERM(THING); |
3689 | ||
3690 | case '\'': | |
09bef843 | 3691 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3692 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3693 | "### Saw string before '%s'\n", s); |
5f80b19c | 3694 | } ); |
3280af22 NIS |
3695 | if (PL_expect == XOPERATOR) { |
3696 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3697 | PL_expect = XTERM; | |
a0d0e21e LW |
3698 | depcom(); |
3699 | return ','; /* grandfather non-comma-format format */ | |
3700 | } | |
463ee0b2 | 3701 | else |
8990e307 | 3702 | no_op("String",s); |
463ee0b2 | 3703 | } |
79072805 | 3704 | if (!s) |
85e6fe83 | 3705 | missingterm((char*)0); |
79072805 LW |
3706 | yylval.ival = OP_CONST; |
3707 | TERM(sublex_start()); | |
3708 | ||
3709 | case '"': | |
09bef843 | 3710 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3711 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3712 | "### Saw string before '%s'\n", s); |
5f80b19c | 3713 | } ); |
3280af22 NIS |
3714 | if (PL_expect == XOPERATOR) { |
3715 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3716 | PL_expect = XTERM; | |
a0d0e21e LW |
3717 | depcom(); |
3718 | return ','; /* grandfather non-comma-format format */ | |
3719 | } | |
463ee0b2 | 3720 | else |
8990e307 | 3721 | no_op("String",s); |
463ee0b2 | 3722 | } |
79072805 | 3723 | if (!s) |
85e6fe83 | 3724 | missingterm((char*)0); |
4633a7c4 | 3725 | yylval.ival = OP_CONST; |
3280af22 | 3726 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3727 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3728 | yylval.ival = OP_STRINGIFY; |
3729 | break; | |
3730 | } | |
3731 | } | |
79072805 LW |
3732 | TERM(sublex_start()); |
3733 | ||
3734 | case '`': | |
09bef843 | 3735 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3736 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3737 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3738 | } ); |
3280af22 | 3739 | if (PL_expect == XOPERATOR) |
8990e307 | 3740 | no_op("Backticks",s); |
79072805 | 3741 | if (!s) |
85e6fe83 | 3742 | missingterm((char*)0); |
79072805 LW |
3743 | yylval.ival = OP_BACKTICK; |
3744 | set_csh(); | |
3745 | TERM(sublex_start()); | |
3746 | ||
3747 | case '\\': | |
3748 | s++; | |
599cee73 | 3749 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
9014280d | 3750 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", |
599cee73 | 3751 | *s, *s); |
3280af22 | 3752 | if (PL_expect == XOPERATOR) |
8990e307 | 3753 | no_op("Backslash",s); |
79072805 LW |
3754 | OPERATOR(REFGEN); |
3755 | ||
a7cb1f99 | 3756 | case 'v': |
e526c9e6 | 3757 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3758 | char *start = s; |
3759 | start++; | |
3760 | start++; | |
dd629d5b | 3761 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3762 | start++; |
3763 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3764 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3765 | TERM(THING); |
3766 | } | |
e526c9e6 | 3767 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
6f33ba73 RGS |
3768 | else if (!isALPHA(*start) && (PL_expect == XTERM |
3769 | || PL_expect == XREF || PL_expect == XSTATE | |
3770 | || PL_expect == XTERMORDORDOR)) { | |
e526c9e6 GS |
3771 | char c = *start; |
3772 | GV *gv; | |
3773 | *start = '\0'; | |
3774 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3775 | *start = c; | |
3776 | if (!gv) { | |
b73d6f50 | 3777 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3778 | TERM(THING); |
3779 | } | |
3780 | } | |
a7cb1f99 GS |
3781 | } |
3782 | goto keylookup; | |
79072805 | 3783 | case 'x': |
3280af22 | 3784 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3785 | s++; |
3786 | Mop(OP_REPEAT); | |
2f3197b3 | 3787 | } |
79072805 LW |
3788 | goto keylookup; |
3789 | ||
378cc40b | 3790 | case '_': |
79072805 LW |
3791 | case 'a': case 'A': |
3792 | case 'b': case 'B': | |
3793 | case 'c': case 'C': | |
3794 | case 'd': case 'D': | |
3795 | case 'e': case 'E': | |
3796 | case 'f': case 'F': | |
3797 | case 'g': case 'G': | |
3798 | case 'h': case 'H': | |
3799 | case 'i': case 'I': | |
3800 | case 'j': case 'J': | |
3801 | case 'k': case 'K': | |
3802 | case 'l': case 'L': | |
3803 | case 'm': case 'M': | |
3804 | case 'n': case 'N': | |
3805 | case 'o': case 'O': | |
3806 | case 'p': case 'P': | |
3807 | case 'q': case 'Q': | |
3808 | case 'r': case 'R': | |
3809 | case 's': case 'S': | |
3810 | case 't': case 'T': | |
3811 | case 'u': case 'U': | |
a7cb1f99 | 3812 | case 'V': |
79072805 LW |
3813 | case 'w': case 'W': |
3814 | case 'X': | |
3815 | case 'y': case 'Y': | |
3816 | case 'z': case 'Z': | |
3817 | ||
49dc05e3 | 3818 | keylookup: { |
1d239bbb | 3819 | orig_keyword = 0; |
161b471a NIS |
3820 | gv = Nullgv; |
3821 | gvp = 0; | |
49dc05e3 | 3822 | |
3280af22 NIS |
3823 | PL_bufptr = s; |
3824 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3825 | |
3826 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3827 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3828 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3829 | (PL_tokenbuf[0] == 'q' && | |
3830 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3831 | |
3832 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3833 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3834 | goto just_a_word; |
3835 | ||
3643fb5f | 3836 | d = s; |
3280af22 | 3837 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3838 | d++; /* no comments skipped here, or s### is misparsed */ |
3839 | ||
3840 | /* Is this a label? */ | |
3280af22 NIS |
3841 | if (!tmp && PL_expect == XSTATE |
3842 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3843 | s = d + 1; |
3280af22 | 3844 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3845 | CLINE; |
3846 | TOKEN(LABEL); | |
3643fb5f CS |
3847 | } |
3848 | ||
3849 | /* Check for keywords */ | |
3280af22 | 3850 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3851 | |
3852 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3853 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3854 | CLINE; |
3280af22 | 3855 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 3856 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 3857 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3858 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
3859 | TERM(WORD); |
3860 | } | |
3861 | ||
a0d0e21e | 3862 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3863 | GV *ogv = Nullgv; /* override (winner) */ |
3864 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3865 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3866 | CV *cv; |
3280af22 | 3867 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3868 | (cv = GvCVu(gv))) |
3869 | { | |
3870 | if (GvIMPORTED_CV(gv)) | |
3871 | ogv = gv; | |
3872 | else if (! CvMETHOD(cv)) | |
3873 | hgv = gv; | |
3874 | } | |
3875 | if (!ogv && | |
3280af22 NIS |
3876 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3877 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3878 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3879 | { | |
3880 | ogv = gv; | |
3881 | } | |
3882 | } | |
3883 | if (ogv) { | |
30fe34ed | 3884 | orig_keyword = tmp; |
56f7f34b | 3885 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
3886 | } |
3887 | else if (gv && !gvp | |
3888 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3889 | && GvCVu(gv) |
3280af22 | 3890 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3891 | { |
3892 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3893 | } |
56f7f34b CS |
3894 | else { /* no override */ |
3895 | tmp = -tmp; | |
ac206dc8 | 3896 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
9014280d | 3897 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
ac206dc8 RGS |
3898 | "dump() better written as CORE::dump()"); |
3899 | } | |
56f7f34b CS |
3900 | gv = Nullgv; |
3901 | gvp = 0; | |
4944e2f7 GS |
3902 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3903 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
9014280d | 3904 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 3905 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3906 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3907 | } |
a0d0e21e LW |
3908 | } |
3909 | ||
3910 | reserved_word: | |
3911 | switch (tmp) { | |
79072805 LW |
3912 | |
3913 | default: /* not a keyword */ | |
93a17b20 | 3914 | just_a_word: { |
96e4d5b1 | 3915 | SV *sv; |
ce29ac45 | 3916 | int pkgname = 0; |
3280af22 | 3917 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3918 | |
3919 | /* Get the rest if it looks like a package qualifier */ | |
3920 | ||
155aba94 | 3921 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3922 | STRLEN morelen; |
3280af22 | 3923 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3924 | TRUE, &morelen); |
3925 | if (!morelen) | |
cea2e8a9 | 3926 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3927 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3928 | len += morelen; |
ce29ac45 | 3929 | pkgname = 1; |
a0d0e21e | 3930 | } |
8990e307 | 3931 | |
3280af22 NIS |
3932 | if (PL_expect == XOPERATOR) { |
3933 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3934 | CopLINE_dec(PL_curcop); |
9014280d | 3935 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3936 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3937 | } |
3938 | else | |
54310121 | 3939 | no_op("Bareword",s); |
463ee0b2 | 3940 | } |
8990e307 | 3941 | |
c3e0f903 GS |
3942 | /* Look for a subroutine with this name in current package, |
3943 | unless name is "Foo::", in which case Foo is a bearword | |
3944 | (and a package name). */ | |
3945 | ||
3946 | if (len > 2 && | |
3280af22 | 3947 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3948 | { |
e476b1b5 | 3949 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
9014280d | 3950 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 3951 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3952 | PL_tokenbuf); |
c3e0f903 | 3953 | len -= 2; |
3280af22 | 3954 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3955 | gv = Nullgv; |
3956 | gvp = 0; | |
3957 | } | |
3958 | else { | |
3959 | len = 0; | |
3960 | if (!gv) | |
3280af22 | 3961 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3962 | } |
3963 | ||
3964 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3965 | |
49dc05e3 | 3966 | if (gvp) { |
79cb57f6 | 3967 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3968 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3969 | } |
3970 | else | |
3280af22 | 3971 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3972 | |
a0d0e21e LW |
3973 | /* Presume this is going to be a bareword of some sort. */ |
3974 | ||
3975 | CLINE; | |
49dc05e3 | 3976 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e | 3977 | yylval.opval->op_private = OPpCONST_BARE; |
8f8cf39c JH |
3978 | /* UTF-8 package name? */ |
3979 | if (UTF && !IN_BYTES && | |
3980 | is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
3981 | SvUTF8_on(sv); | |
a0d0e21e | 3982 | |
c3e0f903 GS |
3983 | /* And if "Foo::", then that's what it certainly is. */ |
3984 | ||
3985 | if (len) | |
3986 | goto safe_bareword; | |
3987 | ||
8990e307 LW |
3988 | /* See if it's the indirect object for a list operator. */ |
3989 | ||
3280af22 NIS |
3990 | if (PL_oldoldbufptr && |
3991 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3992 | (PL_oldoldbufptr == PL_last_lop |
3993 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3994 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3995 | (PL_expect == XREF || |
3996 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3997 | { |
748a9306 LW |
3998 | bool immediate_paren = *s == '('; |
3999 | ||
a0d0e21e LW |
4000 | /* (Now we can afford to cross potential line boundary.) */ |
4001 | s = skipspace(s); | |
4002 | ||
4003 | /* Two barewords in a row may indicate method call. */ | |
4004 | ||
7e2040f0 | 4005 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
4006 | return tmp; |
4007 | ||
4008 | /* If not a declared subroutine, it's an indirect object. */ | |
4009 | /* (But it's an indir obj regardless for sort.) */ | |
4010 | ||
7948272d | 4011 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 4012 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 4013 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 4014 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 4015 | { |
3280af22 | 4016 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 4017 | goto bareword; |
93a17b20 LW |
4018 | } |
4019 | } | |
8990e307 | 4020 | |
3280af22 | 4021 | PL_expect = XOPERATOR; |
8990e307 | 4022 | s = skipspace(s); |
1c3923b3 GS |
4023 | |
4024 | /* Is this a word before a => operator? */ | |
ce29ac45 | 4025 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
4026 | CLINE; |
4027 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 4028 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4029 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
4030 | TERM(WORD); |
4031 | } | |
4032 | ||
4033 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 4034 | if (*s == '(') { |
79072805 | 4035 | CLINE; |
96e4d5b1 | 4036 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 4037 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 4038 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 4039 | s = d + 1; |
4040 | goto its_constant; | |
4041 | } | |
4042 | } | |
3280af22 NIS |
4043 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4044 | PL_expect = XOPERATOR; | |
93a17b20 | 4045 | force_next(WORD); |
c07a80fd | 4046 | yylval.ival = 0; |
463ee0b2 | 4047 | TOKEN('&'); |
79072805 | 4048 | } |
93a17b20 | 4049 | |
a0d0e21e | 4050 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 4051 | |
8ebc5c01 | 4052 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
4053 | PL_last_lop = PL_oldbufptr; |
4054 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 4055 | PREBLOCK(METHOD); |
463ee0b2 LW |
4056 | } |
4057 | ||
8990e307 LW |
4058 | /* If followed by a bareword, see if it looks like indir obj. */ |
4059 | ||
30fe34ed RGS |
4060 | if (!orig_keyword |
4061 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
4062 | && (tmp = intuit_method(s,gv))) | |
a0d0e21e | 4063 | return tmp; |
93a17b20 | 4064 | |
8990e307 LW |
4065 | /* Not a method, so call it a subroutine (if defined) */ |
4066 | ||
8ebc5c01 | 4067 | if (gv && GvCVu(gv)) { |
46fc3d4c | 4068 | CV* cv; |
0453d815 | 4069 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
9014280d | 4070 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4071 | "Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 4072 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 4073 | /* Check for a constant sub */ |
46fc3d4c | 4074 | cv = GvCV(gv); |
96e4d5b1 | 4075 | if ((sv = cv_const_sv(cv))) { |
4076 | its_constant: | |
4077 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4078 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4079 | yylval.opval->op_private = 0; | |
4080 | TOKEN(WORD); | |
89bfa8cd | 4081 | } |
4082 | ||
a5f75d66 AD |
4083 | /* Resolve to GV now. */ |
4084 | op_free(yylval.opval); | |
4085 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4086 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4087 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4088 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4089 | /* Is there a prototype? */ |
4090 | if (SvPOK(cv)) { | |
4091 | STRLEN len; | |
7a52d87a | 4092 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4093 | if (!len) |
4094 | TERM(FUNC0SUB); | |
7a52d87a | 4095 | if (strEQ(proto, "$")) |
4633a7c4 | 4096 | OPERATOR(UNIOPSUB); |
0f5d0394 AE |
4097 | while (*proto == ';') |
4098 | proto++; | |
7a52d87a | 4099 | if (*proto == '&' && *s == '{') { |
c99da370 JH |
4100 | sv_setpv(PL_subname, PL_curstash ? |
4101 | "__ANON__" : "__ANON__::__ANON__"); | |
4633a7c4 LW |
4102 | PREBLOCK(LSTOPSUB); |
4103 | } | |
a9ef352a | 4104 | } |
3280af22 NIS |
4105 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4106 | PL_expect = XTERM; | |
8990e307 LW |
4107 | force_next(WORD); |
4108 | TOKEN(NOAMP); | |
4109 | } | |
748a9306 | 4110 | |
8990e307 LW |
4111 | /* Call it a bare word */ |
4112 | ||
5603f27d GS |
4113 | if (PL_hints & HINT_STRICT_SUBS) |
4114 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4115 | else { | |
4116 | bareword: | |
4117 | if (ckWARN(WARN_RESERVED)) { | |
4118 | if (lastchar != '-') { | |
4119 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
238ae712 | 4120 | if (!*d && !gv_stashpv(PL_tokenbuf,FALSE)) |
9014280d | 4121 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
4122 | PL_tokenbuf); |
4123 | } | |
748a9306 LW |
4124 | } |
4125 | } | |
c3e0f903 GS |
4126 | |
4127 | safe_bareword: | |
f248d071 | 4128 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
9014280d | 4129 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4130 | "Operator or semicolon missing before %c%s", |
3280af22 | 4131 | lastchar, PL_tokenbuf); |
9014280d | 4132 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4133 | "Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
4134 | lastchar, lastchar); |
4135 | } | |
93a17b20 | 4136 | TOKEN(WORD); |
79072805 | 4137 | } |
79072805 | 4138 | |
68dc0745 | 4139 | case KEY___FILE__: |
46fc3d4c | 4140 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4141 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4142 | TERM(THING); |
4143 | ||
79072805 | 4144 | case KEY___LINE__: |
cf2093f6 | 4145 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4146 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4147 | TERM(THING); |
68dc0745 | 4148 | |
4149 | case KEY___PACKAGE__: | |
4150 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
4151 | (PL_curstash |
4152 | ? newSVsv(PL_curstname) | |
4153 | : &PL_sv_undef)); | |
79072805 | 4154 | TERM(THING); |
79072805 | 4155 | |
e50aee73 | 4156 | case KEY___DATA__: |
79072805 LW |
4157 | case KEY___END__: { |
4158 | GV *gv; | |
79072805 LW |
4159 | |
4160 | /*SUPPRESS 560*/ | |
3280af22 | 4161 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4162 | char *pname = "main"; |
3280af22 NIS |
4163 | if (PL_tokenbuf[2] == 'D') |
4164 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4165 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4166 | GvMULTI_on(gv); |
79072805 | 4167 | if (!GvIO(gv)) |
a0d0e21e | 4168 | GvIOp(gv) = newIO(); |
3280af22 | 4169 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4170 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4171 | { | |
3280af22 | 4172 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4173 | fcntl(fd,F_SETFD,fd >= 3); |
4174 | } | |
79072805 | 4175 | #endif |
fd049845 | 4176 | /* Mark this internal pseudo-handle as clean */ |
4177 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4178 | if (PL_preprocess) |
50952442 | 4179 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4180 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4181 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4182 | else |
50952442 | 4183 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4184 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4185 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4186 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4187 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4188 | if (PL_bufend-PL_bufptr > 2 |
4189 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4190 | { |
4191 | Off_t loc = 0; | |
50952442 | 4192 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4193 | loc = PerlIO_tell(PL_rsfp); |
4194 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4195 | } | |
2986a63f JH |
4196 | #ifdef NETWARE |
4197 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4198 | #else | |
c39cd008 | 4199 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4200 | #endif /* NETWARE */ |
1143fce0 JH |
4201 | #ifdef PERLIO_IS_STDIO /* really? */ |
4202 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4203 | /* XXX see note in do_binmode() */ |
4204 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4205 | # endif |
4206 | #endif | |
c39cd008 GS |
4207 | if (loc > 0) |
4208 | PerlIO_seek(PL_rsfp, loc, 0); | |
4209 | } | |
4210 | } | |
4211 | #endif | |
7948272d | 4212 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
4213 | if (!IN_BYTES) { |
4214 | if (UTF) | |
4215 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
4216 | else if (PL_encoding) { | |
4217 | SV *name; | |
4218 | dSP; | |
4219 | ENTER; | |
4220 | SAVETMPS; | |
4221 | PUSHMARK(sp); | |
4222 | EXTEND(SP, 1); | |
4223 | XPUSHs(PL_encoding); | |
4224 | PUTBACK; | |
4225 | call_method("name", G_SCALAR); | |
4226 | SPAGAIN; | |
4227 | name = POPs; | |
4228 | PUTBACK; | |
4229 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, | |
4230 | Perl_form(aTHX_ ":encoding(%"SVf")", | |
4231 | name)); | |
4232 | FREETMPS; | |
4233 | LEAVE; | |
4234 | } | |
4235 | } | |
7948272d | 4236 | #endif |
3280af22 | 4237 | PL_rsfp = Nullfp; |
79072805 LW |
4238 | } |
4239 | goto fake_eof; | |
e929a76b | 4240 | } |
de3bb511 | 4241 | |
8990e307 | 4242 | case KEY_AUTOLOAD: |
ed6116ce | 4243 | case KEY_DESTROY: |
79072805 | 4244 | case KEY_BEGIN: |
7d30b5c4 | 4245 | case KEY_CHECK: |
7d07dbc2 | 4246 | case KEY_INIT: |
7d30b5c4 | 4247 | case KEY_END: |
3280af22 NIS |
4248 | if (PL_expect == XSTATE) { |
4249 | s = PL_bufptr; | |
93a17b20 | 4250 | goto really_sub; |
79072805 LW |
4251 | } |
4252 | goto just_a_word; | |
4253 | ||
a0d0e21e LW |
4254 | case KEY_CORE: |
4255 | if (*s == ':' && s[1] == ':') { | |
4256 | s += 2; | |
748a9306 | 4257 | d = s; |
3280af22 | 4258 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4259 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4260 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4261 | if (tmp < 0) |
4262 | tmp = -tmp; | |
4263 | goto reserved_word; | |
4264 | } | |
4265 | goto just_a_word; | |
4266 | ||
463ee0b2 LW |
4267 | case KEY_abs: |
4268 | UNI(OP_ABS); | |
4269 | ||
79072805 LW |
4270 | case KEY_alarm: |
4271 | UNI(OP_ALARM); | |
4272 | ||
4273 | case KEY_accept: | |
a0d0e21e | 4274 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4275 | |
463ee0b2 LW |
4276 | case KEY_and: |
4277 | OPERATOR(ANDOP); | |
4278 | ||
79072805 | 4279 | case KEY_atan2: |
a0d0e21e | 4280 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4281 | |
79072805 | 4282 | case KEY_bind: |
a0d0e21e | 4283 | LOP(OP_BIND,XTERM); |
79072805 LW |
4284 | |
4285 | case KEY_binmode: | |
1c1fc3ea | 4286 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4287 | |
4288 | case KEY_bless: | |
a0d0e21e | 4289 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4290 | |
4291 | case KEY_chop: | |
4292 | UNI(OP_CHOP); | |
4293 | ||
4294 | case KEY_continue: | |
4295 | PREBLOCK(CONTINUE); | |
4296 | ||
4297 | case KEY_chdir: | |
85e6fe83 | 4298 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4299 | UNI(OP_CHDIR); |
4300 | ||
4301 | case KEY_close: | |
4302 | UNI(OP_CLOSE); | |
4303 | ||
4304 | case KEY_closedir: | |
4305 | UNI(OP_CLOSEDIR); | |
4306 | ||
4307 | case KEY_cmp: | |
4308 | Eop(OP_SCMP); | |
4309 | ||
4310 | case KEY_caller: | |
4311 | UNI(OP_CALLER); | |
4312 | ||
4313 | case KEY_crypt: | |
4314 | #ifdef FCRYPT | |
f4c556ac GS |
4315 | if (!PL_cryptseen) { |
4316 | PL_cryptseen = TRUE; | |
de3bb511 | 4317 | init_des(); |
f4c556ac | 4318 | } |
a687059c | 4319 | #endif |
a0d0e21e | 4320 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4321 | |
4322 | case KEY_chmod: | |
a0d0e21e | 4323 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4324 | |
4325 | case KEY_chown: | |
a0d0e21e | 4326 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4327 | |
4328 | case KEY_connect: | |
a0d0e21e | 4329 | LOP(OP_CONNECT,XTERM); |
79072805 | 4330 | |
463ee0b2 LW |
4331 | case KEY_chr: |
4332 | UNI(OP_CHR); | |
4333 | ||
79072805 LW |
4334 | case KEY_cos: |
4335 | UNI(OP_COS); | |
4336 | ||
4337 | case KEY_chroot: | |
4338 | UNI(OP_CHROOT); | |
4339 | ||
4340 | case KEY_do: | |
4341 | s = skipspace(s); | |
4342 | if (*s == '{') | |
a0d0e21e | 4343 | PRETERMBLOCK(DO); |
79072805 | 4344 | if (*s != '\'') |
89c5585f | 4345 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4346 | OPERATOR(DO); |
79072805 LW |
4347 | |
4348 | case KEY_die: | |
3280af22 | 4349 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4350 | LOP(OP_DIE,XTERM); |
79072805 LW |
4351 | |
4352 | case KEY_defined: | |
4353 | UNI(OP_DEFINED); | |
4354 | ||
4355 | case KEY_delete: | |
a0d0e21e | 4356 | UNI(OP_DELETE); |
79072805 LW |
4357 | |
4358 | case KEY_dbmopen: | |
a0d0e21e LW |
4359 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4360 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4361 | |
4362 | case KEY_dbmclose: | |
4363 | UNI(OP_DBMCLOSE); | |
4364 | ||
4365 | case KEY_dump: | |
a0d0e21e | 4366 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4367 | LOOPX(OP_DUMP); |
4368 | ||
4369 | case KEY_else: | |
4370 | PREBLOCK(ELSE); | |
4371 | ||
4372 | case KEY_elsif: | |
57843af0 | 4373 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4374 | OPERATOR(ELSIF); |
4375 | ||
4376 | case KEY_eq: | |
4377 | Eop(OP_SEQ); | |
4378 | ||
a0d0e21e LW |
4379 | case KEY_exists: |
4380 | UNI(OP_EXISTS); | |
4e553d73 | 4381 | |
79072805 LW |
4382 | case KEY_exit: |
4383 | UNI(OP_EXIT); | |
4384 | ||
4385 | case KEY_eval: | |
79072805 | 4386 | s = skipspace(s); |
3280af22 | 4387 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4388 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4389 | |
4390 | case KEY_eof: | |
4391 | UNI(OP_EOF); | |
4392 | ||
c963b151 BD |
4393 | case KEY_err: |
4394 | OPERATOR(DOROP); | |
4395 | ||
79072805 LW |
4396 | case KEY_exp: |
4397 | UNI(OP_EXP); | |
4398 | ||
4399 | case KEY_each: | |
4400 | UNI(OP_EACH); | |
4401 | ||
4402 | case KEY_exec: | |
4403 | set_csh(); | |
a0d0e21e | 4404 | LOP(OP_EXEC,XREF); |
79072805 LW |
4405 | |
4406 | case KEY_endhostent: | |
4407 | FUN0(OP_EHOSTENT); | |
4408 | ||
4409 | case KEY_endnetent: | |
4410 | FUN0(OP_ENETENT); | |
4411 | ||
4412 | case KEY_endservent: | |
4413 | FUN0(OP_ESERVENT); | |
4414 | ||
4415 | case KEY_endprotoent: | |
4416 | FUN0(OP_EPROTOENT); | |
4417 | ||
4418 | case KEY_endpwent: | |
4419 | FUN0(OP_EPWENT); | |
4420 | ||
4421 | case KEY_endgrent: | |
4422 | FUN0(OP_EGRENT); | |
4423 | ||
4424 | case KEY_for: | |
4425 | case KEY_foreach: | |
57843af0 | 4426 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4427 | s = skipspace(s); |
7e2040f0 | 4428 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4429 | char *p = s; |
3280af22 | 4430 | if ((PL_bufend - p) >= 3 && |
55497cff | 4431 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4432 | p += 2; | |
77ca0c92 LW |
4433 | else if ((PL_bufend - p) >= 4 && |
4434 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4435 | p += 3; | |
55497cff | 4436 | p = skipspace(p); |
7e2040f0 | 4437 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4438 | p = scan_ident(p, PL_bufend, |
4439 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4440 | p = skipspace(p); | |
4441 | } | |
4442 | if (*p != '$') | |
cea2e8a9 | 4443 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4444 | } |
79072805 LW |
4445 | OPERATOR(FOR); |
4446 | ||
4447 | case KEY_formline: | |
a0d0e21e | 4448 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4449 | |
4450 | case KEY_fork: | |
4451 | FUN0(OP_FORK); | |
4452 | ||
4453 | case KEY_fcntl: | |
a0d0e21e | 4454 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4455 | |
4456 | case KEY_fileno: | |
4457 | UNI(OP_FILENO); | |
4458 | ||
4459 | case KEY_flock: | |
a0d0e21e | 4460 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4461 | |
4462 | case KEY_gt: | |
4463 | Rop(OP_SGT); | |
4464 | ||
4465 | case KEY_ge: | |
4466 | Rop(OP_SGE); | |
4467 | ||
4468 | case KEY_grep: | |
2c38e13d | 4469 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4470 | |
4471 | case KEY_goto: | |
a0d0e21e | 4472 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4473 | LOOPX(OP_GOTO); |
4474 | ||
4475 | case KEY_gmtime: | |
4476 | UNI(OP_GMTIME); | |
4477 | ||
4478 | case KEY_getc: | |
6f33ba73 | 4479 | UNIDOR(OP_GETC); |
79072805 LW |
4480 | |
4481 | case KEY_getppid: | |
4482 | FUN0(OP_GETPPID); | |
4483 | ||
4484 | case KEY_getpgrp: | |
4485 | UNI(OP_GETPGRP); | |
4486 | ||
4487 | case KEY_getpriority: | |
a0d0e21e | 4488 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4489 | |
4490 | case KEY_getprotobyname: | |
4491 | UNI(OP_GPBYNAME); | |
4492 | ||
4493 | case KEY_getprotobynumber: | |
a0d0e21e | 4494 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4495 | |
4496 | case KEY_getprotoent: | |
4497 | FUN0(OP_GPROTOENT); | |
4498 | ||
4499 | case KEY_getpwent: | |
4500 | FUN0(OP_GPWENT); | |
4501 | ||
4502 | case KEY_getpwnam: | |
ff68c719 | 4503 | UNI(OP_GPWNAM); |
79072805 LW |
4504 | |
4505 | case KEY_getpwuid: | |
ff68c719 | 4506 | UNI(OP_GPWUID); |
79072805 LW |
4507 | |
4508 | case KEY_getpeername: | |
4509 | UNI(OP_GETPEERNAME); | |
4510 | ||
4511 | case KEY_gethostbyname: | |
4512 | UNI(OP_GHBYNAME); | |
4513 | ||
4514 | case KEY_gethostbyaddr: | |
a0d0e21e | 4515 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4516 | |
4517 | case KEY_gethostent: | |
4518 | FUN0(OP_GHOSTENT); | |
4519 | ||
4520 | case KEY_getnetbyname: | |
4521 | UNI(OP_GNBYNAME); | |
4522 | ||
4523 | case KEY_getnetbyaddr: | |
a0d0e21e | 4524 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4525 | |
4526 | case KEY_getnetent: | |
4527 | FUN0(OP_GNETENT); | |
4528 | ||
4529 | case KEY_getservbyname: | |
a0d0e21e | 4530 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4531 | |
4532 | case KEY_getservbyport: | |
a0d0e21e | 4533 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4534 | |
4535 | case KEY_getservent: | |
4536 | FUN0(OP_GSERVENT); | |
4537 | ||
4538 | case KEY_getsockname: | |
4539 | UNI(OP_GETSOCKNAME); | |
4540 | ||
4541 | case KEY_getsockopt: | |
a0d0e21e | 4542 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4543 | |
4544 | case KEY_getgrent: | |
4545 | FUN0(OP_GGRENT); | |
4546 | ||
4547 | case KEY_getgrnam: | |
ff68c719 | 4548 | UNI(OP_GGRNAM); |
79072805 LW |
4549 | |
4550 | case KEY_getgrgid: | |
ff68c719 | 4551 | UNI(OP_GGRGID); |
79072805 LW |
4552 | |
4553 | case KEY_getlogin: | |
4554 | FUN0(OP_GETLOGIN); | |
4555 | ||
93a17b20 | 4556 | case KEY_glob: |
a0d0e21e LW |
4557 | set_csh(); |
4558 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4559 | |
79072805 LW |
4560 | case KEY_hex: |
4561 | UNI(OP_HEX); | |
4562 | ||
4563 | case KEY_if: | |
57843af0 | 4564 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4565 | OPERATOR(IF); |
4566 | ||
4567 | case KEY_index: | |
a0d0e21e | 4568 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4569 | |
4570 | case KEY_int: | |
4571 | UNI(OP_INT); | |
4572 | ||
4573 | case KEY_ioctl: | |
a0d0e21e | 4574 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4575 | |
4576 | case KEY_join: | |
a0d0e21e | 4577 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4578 | |
4579 | case KEY_keys: | |
4580 | UNI(OP_KEYS); | |
4581 | ||
4582 | case KEY_kill: | |
a0d0e21e | 4583 | LOP(OP_KILL,XTERM); |
79072805 LW |
4584 | |
4585 | case KEY_last: | |
a0d0e21e | 4586 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4587 | LOOPX(OP_LAST); |
4e553d73 | 4588 | |
79072805 LW |
4589 | case KEY_lc: |
4590 | UNI(OP_LC); | |
4591 | ||
4592 | case KEY_lcfirst: | |
4593 | UNI(OP_LCFIRST); | |
4594 | ||
4595 | case KEY_local: | |
09bef843 | 4596 | yylval.ival = 0; |
79072805 LW |
4597 | OPERATOR(LOCAL); |
4598 | ||
4599 | case KEY_length: | |
4600 | UNI(OP_LENGTH); | |
4601 | ||
4602 | case KEY_lt: | |
4603 | Rop(OP_SLT); | |
4604 | ||
4605 | case KEY_le: | |
4606 | Rop(OP_SLE); | |
4607 | ||
4608 | case KEY_localtime: | |
4609 | UNI(OP_LOCALTIME); | |
4610 | ||
4611 | case KEY_log: | |
4612 | UNI(OP_LOG); | |
4613 | ||
4614 | case KEY_link: | |
a0d0e21e | 4615 | LOP(OP_LINK,XTERM); |
79072805 LW |
4616 | |
4617 | case KEY_listen: | |
a0d0e21e | 4618 | LOP(OP_LISTEN,XTERM); |
79072805 | 4619 | |
c0329465 MB |
4620 | case KEY_lock: |
4621 | UNI(OP_LOCK); | |
4622 | ||
79072805 LW |
4623 | case KEY_lstat: |
4624 | UNI(OP_LSTAT); | |
4625 | ||
4626 | case KEY_m: | |
8782bef2 | 4627 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4628 | TERM(sublex_start()); |
4629 | ||
a0d0e21e | 4630 | case KEY_map: |
2c38e13d | 4631 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4632 | |
79072805 | 4633 | case KEY_mkdir: |
a0d0e21e | 4634 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4635 | |
4636 | case KEY_msgctl: | |
a0d0e21e | 4637 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4638 | |
4639 | case KEY_msgget: | |
a0d0e21e | 4640 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4641 | |
4642 | case KEY_msgrcv: | |
a0d0e21e | 4643 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4644 | |
4645 | case KEY_msgsnd: | |
a0d0e21e | 4646 | LOP(OP_MSGSND,XTERM); |
79072805 | 4647 | |
77ca0c92 | 4648 | case KEY_our: |
93a17b20 | 4649 | case KEY_my: |
77ca0c92 | 4650 | PL_in_my = tmp; |
c750a3ec | 4651 | s = skipspace(s); |
7e2040f0 | 4652 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4653 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4654 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4655 | goto really_sub; | |
def3634b | 4656 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4657 | if (!PL_in_my_stash) { |
c750a3ec | 4658 | char tmpbuf[1024]; |
3280af22 NIS |
4659 | PL_bufptr = s; |
4660 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4661 | yyerror(tmpbuf); |
4662 | } | |
4663 | } | |
09bef843 | 4664 | yylval.ival = 1; |
55497cff | 4665 | OPERATOR(MY); |
93a17b20 | 4666 | |
79072805 | 4667 | case KEY_next: |
a0d0e21e | 4668 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4669 | LOOPX(OP_NEXT); |
4670 | ||
4671 | case KEY_ne: | |
4672 | Eop(OP_SNE); | |
4673 | ||
a0d0e21e | 4674 | case KEY_no: |
3280af22 | 4675 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4676 | yyerror("\"no\" not allowed in expression"); |
4677 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4678 | s = force_version(s, FALSE); |
a0d0e21e LW |
4679 | yylval.ival = 0; |
4680 | OPERATOR(USE); | |
4681 | ||
4682 | case KEY_not: | |
2d2e263d LW |
4683 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4684 | FUN1(OP_NOT); | |
4685 | else | |
4686 | OPERATOR(NOTOP); | |
a0d0e21e | 4687 | |
79072805 | 4688 | case KEY_open: |
93a17b20 | 4689 | s = skipspace(s); |
7e2040f0 | 4690 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4691 | char *t; |
7e2040f0 | 4692 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4693 | t = skipspace(d); |
66fbe8fb HS |
4694 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) |
4695 | /* [perl #16184] */ | |
4696 | && !(t[0] == '=' && t[1] == '>') | |
4697 | ) { | |
9014280d | 4698 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 | 4699 | "Precedence problem: open %.*s should be open(%.*s)", |
66fbe8fb HS |
4700 | d - s, s, d - s, s); |
4701 | } | |
93a17b20 | 4702 | } |
a0d0e21e | 4703 | LOP(OP_OPEN,XTERM); |
79072805 | 4704 | |
463ee0b2 | 4705 | case KEY_or: |
a0d0e21e | 4706 | yylval.ival = OP_OR; |
463ee0b2 LW |
4707 | OPERATOR(OROP); |
4708 | ||
79072805 LW |
4709 | case KEY_ord: |
4710 | UNI(OP_ORD); | |
4711 | ||
4712 | case KEY_oct: | |
4713 | UNI(OP_OCT); | |
4714 | ||
4715 | case KEY_opendir: | |
a0d0e21e | 4716 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4717 | |
4718 | case KEY_print: | |
3280af22 | 4719 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4720 | LOP(OP_PRINT,XREF); |
79072805 LW |
4721 | |
4722 | case KEY_printf: | |
3280af22 | 4723 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4724 | LOP(OP_PRTF,XREF); |
79072805 | 4725 | |
c07a80fd | 4726 | case KEY_prototype: |
4727 | UNI(OP_PROTOTYPE); | |
4728 | ||
79072805 | 4729 | case KEY_push: |
a0d0e21e | 4730 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4731 | |
4732 | case KEY_pop: | |
6f33ba73 | 4733 | UNIDOR(OP_POP); |
79072805 | 4734 | |
a0d0e21e | 4735 | case KEY_pos: |
6f33ba73 | 4736 | UNIDOR(OP_POS); |
4e553d73 | 4737 | |
79072805 | 4738 | case KEY_pack: |
a0d0e21e | 4739 | LOP(OP_PACK,XTERM); |
79072805 LW |
4740 | |
4741 | case KEY_package: | |
a0d0e21e | 4742 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4743 | OPERATOR(PACKAGE); |
4744 | ||
4745 | case KEY_pipe: | |
a0d0e21e | 4746 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4747 | |
4748 | case KEY_q: | |
09bef843 | 4749 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4750 | if (!s) |
85e6fe83 | 4751 | missingterm((char*)0); |
79072805 LW |
4752 | yylval.ival = OP_CONST; |
4753 | TERM(sublex_start()); | |
4754 | ||
a0d0e21e LW |
4755 | case KEY_quotemeta: |
4756 | UNI(OP_QUOTEMETA); | |
4757 | ||
8990e307 | 4758 | case KEY_qw: |
09bef843 | 4759 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4760 | if (!s) |
85e6fe83 | 4761 | missingterm((char*)0); |
8127e0e3 GS |
4762 | force_next(')'); |
4763 | if (SvCUR(PL_lex_stuff)) { | |
4764 | OP *words = Nullop; | |
4765 | int warned = 0; | |
3280af22 | 4766 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4767 | while (len) { |
7948272d | 4768 | SV *sv; |
8127e0e3 GS |
4769 | for (; isSPACE(*d) && len; --len, ++d) ; |
4770 | if (len) { | |
4771 | char *b = d; | |
e476b1b5 | 4772 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4773 | for (; !isSPACE(*d) && len; --len, ++d) { |
4774 | if (*d == ',') { | |
9014280d | 4775 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4776 | "Possible attempt to separate words with commas"); |
4777 | ++warned; | |
4778 | } | |
4779 | else if (*d == '#') { | |
9014280d | 4780 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4781 | "Possible attempt to put comments in qw() list"); |
4782 | ++warned; | |
4783 | } | |
4784 | } | |
4785 | } | |
4786 | else { | |
4787 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4788 | } | |
7948272d NIS |
4789 | sv = newSVpvn(b, d-b); |
4790 | if (DO_UTF8(PL_lex_stuff)) | |
4791 | SvUTF8_on(sv); | |
8127e0e3 | 4792 | words = append_elem(OP_LIST, words, |
7948272d | 4793 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4794 | } |
4795 | } | |
8127e0e3 GS |
4796 | if (words) { |
4797 | PL_nextval[PL_nexttoke].opval = words; | |
4798 | force_next(THING); | |
4799 | } | |
55497cff | 4800 | } |
37fd879b | 4801 | if (PL_lex_stuff) { |
8127e0e3 | 4802 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4803 | PL_lex_stuff = Nullsv; |
4804 | } | |
3280af22 | 4805 | PL_expect = XTERM; |
8127e0e3 | 4806 | TOKEN('('); |
8990e307 | 4807 | |
79072805 | 4808 | case KEY_qq: |
09bef843 | 4809 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4810 | if (!s) |
85e6fe83 | 4811 | missingterm((char*)0); |
a0d0e21e | 4812 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4813 | if (SvIVX(PL_lex_stuff) == '\'') |
4814 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4815 | TERM(sublex_start()); |
4816 | ||
8782bef2 GB |
4817 | case KEY_qr: |
4818 | s = scan_pat(s,OP_QR); | |
4819 | TERM(sublex_start()); | |
4820 | ||
79072805 | 4821 | case KEY_qx: |
09bef843 | 4822 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4823 | if (!s) |
85e6fe83 | 4824 | missingterm((char*)0); |
79072805 LW |
4825 | yylval.ival = OP_BACKTICK; |
4826 | set_csh(); | |
4827 | TERM(sublex_start()); | |
4828 | ||
4829 | case KEY_return: | |
4830 | OLDLOP(OP_RETURN); | |
4831 | ||
4832 | case KEY_require: | |
a7cb1f99 | 4833 | s = skipspace(s); |
e759cc13 RGS |
4834 | if (isDIGIT(*s)) { |
4835 | s = force_version(s, FALSE); | |
a7cb1f99 | 4836 | } |
e759cc13 RGS |
4837 | else if (*s != 'v' || !isDIGIT(s[1]) |
4838 | || (s = force_version(s, TRUE), *s == 'v')) | |
4839 | { | |
a7cb1f99 GS |
4840 | *PL_tokenbuf = '\0'; |
4841 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4842 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4843 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4844 | else if (*s == '<') | |
4845 | yyerror("<> should be quotes"); | |
4846 | } | |
463ee0b2 | 4847 | UNI(OP_REQUIRE); |
79072805 LW |
4848 | |
4849 | case KEY_reset: | |
4850 | UNI(OP_RESET); | |
4851 | ||
4852 | case KEY_redo: | |
a0d0e21e | 4853 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4854 | LOOPX(OP_REDO); |
4855 | ||
4856 | case KEY_rename: | |
a0d0e21e | 4857 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4858 | |
4859 | case KEY_rand: | |
4860 | UNI(OP_RAND); | |
4861 | ||
4862 | case KEY_rmdir: | |
4863 | UNI(OP_RMDIR); | |
4864 | ||
4865 | case KEY_rindex: | |
a0d0e21e | 4866 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4867 | |
4868 | case KEY_read: | |
a0d0e21e | 4869 | LOP(OP_READ,XTERM); |
79072805 LW |
4870 | |
4871 | case KEY_readdir: | |
4872 | UNI(OP_READDIR); | |
4873 | ||
93a17b20 LW |
4874 | case KEY_readline: |
4875 | set_csh(); | |
6f33ba73 | 4876 | UNIDOR(OP_READLINE); |
93a17b20 LW |
4877 | |
4878 | case KEY_readpipe: | |
4879 | set_csh(); | |
4880 | UNI(OP_BACKTICK); | |
4881 | ||
79072805 LW |
4882 | case KEY_rewinddir: |
4883 | UNI(OP_REWINDDIR); | |
4884 | ||
4885 | case KEY_recv: | |
a0d0e21e | 4886 | LOP(OP_RECV,XTERM); |
79072805 LW |
4887 | |
4888 | case KEY_reverse: | |
a0d0e21e | 4889 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4890 | |
4891 | case KEY_readlink: | |
6f33ba73 | 4892 | UNIDOR(OP_READLINK); |
79072805 LW |
4893 | |
4894 | case KEY_ref: | |
4895 | UNI(OP_REF); | |
4896 | ||
4897 | case KEY_s: | |
4898 | s = scan_subst(s); | |
4899 | if (yylval.opval) | |
4900 | TERM(sublex_start()); | |
4901 | else | |
4902 | TOKEN(1); /* force error */ | |
4903 | ||
a0d0e21e LW |
4904 | case KEY_chomp: |
4905 | UNI(OP_CHOMP); | |
4e553d73 | 4906 | |
79072805 LW |
4907 | case KEY_scalar: |
4908 | UNI(OP_SCALAR); | |
4909 | ||
4910 | case KEY_select: | |
a0d0e21e | 4911 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4912 | |
4913 | case KEY_seek: | |
a0d0e21e | 4914 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4915 | |
4916 | case KEY_semctl: | |
a0d0e21e | 4917 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4918 | |
4919 | case KEY_semget: | |
a0d0e21e | 4920 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4921 | |
4922 | case KEY_semop: | |
a0d0e21e | 4923 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4924 | |
4925 | case KEY_send: | |
a0d0e21e | 4926 | LOP(OP_SEND,XTERM); |
79072805 LW |
4927 | |
4928 | case KEY_setpgrp: | |
a0d0e21e | 4929 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4930 | |
4931 | case KEY_setpriority: | |
a0d0e21e | 4932 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4933 | |
4934 | case KEY_sethostent: | |
ff68c719 | 4935 | UNI(OP_SHOSTENT); |
79072805 LW |
4936 | |
4937 | case KEY_setnetent: | |
ff68c719 | 4938 | UNI(OP_SNETENT); |
79072805 LW |
4939 | |
4940 | case KEY_setservent: | |
ff68c719 | 4941 | UNI(OP_SSERVENT); |
79072805 LW |
4942 | |
4943 | case KEY_setprotoent: | |
ff68c719 | 4944 | UNI(OP_SPROTOENT); |
79072805 LW |
4945 | |
4946 | case KEY_setpwent: | |
4947 | FUN0(OP_SPWENT); | |
4948 | ||
4949 | case KEY_setgrent: | |
4950 | FUN0(OP_SGRENT); | |
4951 | ||
4952 | case KEY_seekdir: | |
a0d0e21e | 4953 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4954 | |
4955 | case KEY_setsockopt: | |
a0d0e21e | 4956 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4957 | |
4958 | case KEY_shift: | |
6f33ba73 | 4959 | UNIDOR(OP_SHIFT); |
79072805 LW |
4960 | |
4961 | case KEY_shmctl: | |
a0d0e21e | 4962 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4963 | |
4964 | case KEY_shmget: | |
a0d0e21e | 4965 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4966 | |
4967 | case KEY_shmread: | |
a0d0e21e | 4968 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4969 | |
4970 | case KEY_shmwrite: | |
a0d0e21e | 4971 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4972 | |
4973 | case KEY_shutdown: | |
a0d0e21e | 4974 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4975 | |
4976 | case KEY_sin: | |
4977 | UNI(OP_SIN); | |
4978 | ||
4979 | case KEY_sleep: | |
4980 | UNI(OP_SLEEP); | |
4981 | ||
4982 | case KEY_socket: | |
a0d0e21e | 4983 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4984 | |
4985 | case KEY_socketpair: | |
a0d0e21e | 4986 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4987 | |
4988 | case KEY_sort: | |
3280af22 | 4989 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4990 | s = skipspace(s); |
4991 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4992 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4993 | PL_expect = XTERM; |
15f0808c | 4994 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4995 | LOP(OP_SORT,XREF); |
79072805 LW |
4996 | |
4997 | case KEY_split: | |
a0d0e21e | 4998 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4999 | |
5000 | case KEY_sprintf: | |
a0d0e21e | 5001 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
5002 | |
5003 | case KEY_splice: | |
a0d0e21e | 5004 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
5005 | |
5006 | case KEY_sqrt: | |
5007 | UNI(OP_SQRT); | |
5008 | ||
5009 | case KEY_srand: | |
5010 | UNI(OP_SRAND); | |
5011 | ||
5012 | case KEY_stat: | |
5013 | UNI(OP_STAT); | |
5014 | ||
5015 | case KEY_study: | |
79072805 LW |
5016 | UNI(OP_STUDY); |
5017 | ||
5018 | case KEY_substr: | |
a0d0e21e | 5019 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
5020 | |
5021 | case KEY_format: | |
5022 | case KEY_sub: | |
93a17b20 | 5023 | really_sub: |
09bef843 | 5024 | { |
3280af22 | 5025 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 5026 | SSize_t tboffset = 0; |
09bef843 | 5027 | expectation attrful; |
d731386a | 5028 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
5029 | int key = tmp; |
5030 | ||
5031 | s = skipspace(s); | |
5032 | ||
7e2040f0 | 5033 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
5034 | (*s == ':' && s[1] == ':')) |
5035 | { | |
5036 | PL_expect = XBLOCK; | |
5037 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
5038 | /* remember buffer pos'n for later force_word */ |
5039 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
5040 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
5041 | if (strchr(tmpbuf, ':')) | |
5042 | sv_setpv(PL_subname, tmpbuf); | |
5043 | else { | |
5044 | sv_setsv(PL_subname,PL_curstname); | |
5045 | sv_catpvn(PL_subname,"::",2); | |
5046 | sv_catpvn(PL_subname,tmpbuf,len); | |
5047 | } | |
5048 | s = skipspace(d); | |
5049 | have_name = TRUE; | |
5050 | } | |
463ee0b2 | 5051 | else { |
09bef843 SB |
5052 | if (key == KEY_my) |
5053 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
5054 | PL_expect = XTERMBLOCK; | |
5055 | attrful = XATTRTERM; | |
5056 | sv_setpv(PL_subname,"?"); | |
5057 | have_name = FALSE; | |
463ee0b2 | 5058 | } |
4633a7c4 | 5059 | |
09bef843 SB |
5060 | if (key == KEY_format) { |
5061 | if (*s == '=') | |
5062 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5063 | if (have_name) | |
b1b65b59 JH |
5064 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5065 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5066 | OPERATOR(FORMAT); |
5067 | } | |
79072805 | 5068 | |
09bef843 SB |
5069 | /* Look for a prototype */ |
5070 | if (*s == '(') { | |
5071 | char *p; | |
5072 | ||
5073 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 5074 | if (!s) |
09bef843 | 5075 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 5076 | /* strip spaces and check for bad characters */ |
09bef843 SB |
5077 | d = SvPVX(PL_lex_stuff); |
5078 | tmp = 0; | |
d731386a | 5079 | bad_proto = FALSE; |
09bef843 | 5080 | for (p = d; *p; ++p) { |
d37a9538 | 5081 | if (!isSPACE(*p)) { |
09bef843 | 5082 | d[tmp++] = *p; |
d37a9538 ST |
5083 | if (!strchr("$@%*;[]&\\", *p)) |
5084 | bad_proto = TRUE; | |
5085 | } | |
09bef843 SB |
5086 | } |
5087 | d[tmp] = '\0'; | |
420cdfc1 | 5088 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
9014280d | 5089 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d NC |
5090 | "Illegal character in prototype for %"SVf" : %s", |
5091 | PL_subname, d); | |
09bef843 SB |
5092 | SvCUR(PL_lex_stuff) = tmp; |
5093 | have_proto = TRUE; | |
68dc0745 | 5094 | |
09bef843 | 5095 | s = skipspace(s); |
4633a7c4 | 5096 | } |
09bef843 SB |
5097 | else |
5098 | have_proto = FALSE; | |
5099 | ||
5100 | if (*s == ':' && s[1] != ':') | |
5101 | PL_expect = attrful; | |
904d85c5 RGS |
5102 | else if (!have_name && *s != '{' && key == KEY_sub) |
5103 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
09bef843 SB |
5104 | |
5105 | if (have_proto) { | |
b1b65b59 JH |
5106 | PL_nextval[PL_nexttoke].opval = |
5107 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5108 | PL_lex_stuff = Nullsv; |
5109 | force_next(THING); | |
68dc0745 | 5110 | } |
09bef843 | 5111 | if (!have_name) { |
c99da370 JH |
5112 | sv_setpv(PL_subname, |
5113 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__"); | |
09bef843 | 5114 | TOKEN(ANONSUB); |
4633a7c4 | 5115 | } |
b1b65b59 JH |
5116 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5117 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5118 | if (key == KEY_my) |
5119 | TOKEN(MYSUB); | |
5120 | TOKEN(SUB); | |
4633a7c4 | 5121 | } |
79072805 LW |
5122 | |
5123 | case KEY_system: | |
5124 | set_csh(); | |
a0d0e21e | 5125 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5126 | |
5127 | case KEY_symlink: | |
a0d0e21e | 5128 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5129 | |
5130 | case KEY_syscall: | |
a0d0e21e | 5131 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5132 | |
c07a80fd | 5133 | case KEY_sysopen: |
5134 | LOP(OP_SYSOPEN,XTERM); | |
5135 | ||
137443ea | 5136 | case KEY_sysseek: |
5137 | LOP(OP_SYSSEEK,XTERM); | |
5138 | ||
79072805 | 5139 | case KEY_sysread: |
a0d0e21e | 5140 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5141 | |
5142 | case KEY_syswrite: | |
a0d0e21e | 5143 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5144 | |
5145 | case KEY_tr: | |
5146 | s = scan_trans(s); | |
5147 | TERM(sublex_start()); | |
5148 | ||
5149 | case KEY_tell: | |
5150 | UNI(OP_TELL); | |
5151 | ||
5152 | case KEY_telldir: | |
5153 | UNI(OP_TELLDIR); | |
5154 | ||
463ee0b2 | 5155 | case KEY_tie: |
a0d0e21e | 5156 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5157 | |
c07a80fd | 5158 | case KEY_tied: |
5159 | UNI(OP_TIED); | |
5160 | ||
79072805 LW |
5161 | case KEY_time: |
5162 | FUN0(OP_TIME); | |
5163 | ||
5164 | case KEY_times: | |
5165 | FUN0(OP_TMS); | |
5166 | ||
5167 | case KEY_truncate: | |
a0d0e21e | 5168 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5169 | |
5170 | case KEY_uc: | |
5171 | UNI(OP_UC); | |
5172 | ||
5173 | case KEY_ucfirst: | |
5174 | UNI(OP_UCFIRST); | |
5175 | ||
463ee0b2 LW |
5176 | case KEY_untie: |
5177 | UNI(OP_UNTIE); | |
5178 | ||
79072805 | 5179 | case KEY_until: |
57843af0 | 5180 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5181 | OPERATOR(UNTIL); |
5182 | ||
5183 | case KEY_unless: | |
57843af0 | 5184 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5185 | OPERATOR(UNLESS); |
5186 | ||
5187 | case KEY_unlink: | |
a0d0e21e | 5188 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5189 | |
5190 | case KEY_undef: | |
6f33ba73 | 5191 | UNIDOR(OP_UNDEF); |
79072805 LW |
5192 | |
5193 | case KEY_unpack: | |
a0d0e21e | 5194 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5195 | |
5196 | case KEY_utime: | |
a0d0e21e | 5197 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5198 | |
5199 | case KEY_umask: | |
6f33ba73 | 5200 | UNIDOR(OP_UMASK); |
79072805 LW |
5201 | |
5202 | case KEY_unshift: | |
a0d0e21e LW |
5203 | LOP(OP_UNSHIFT,XTERM); |
5204 | ||
5205 | case KEY_use: | |
3280af22 | 5206 | if (PL_expect != XSTATE) |
a0d0e21e | 5207 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5208 | s = skipspace(s); |
a7cb1f99 | 5209 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5210 | s = force_version(s, TRUE); |
a7cb1f99 | 5211 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5212 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5213 | force_next(WORD); |
5214 | } | |
e759cc13 RGS |
5215 | else if (*s == 'v') { |
5216 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5217 | s = force_version(s, FALSE); | |
5218 | } | |
89bfa8cd | 5219 | } |
5220 | else { | |
5221 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5222 | s = force_version(s, FALSE); |
89bfa8cd | 5223 | } |
a0d0e21e LW |
5224 | yylval.ival = 1; |
5225 | OPERATOR(USE); | |
79072805 LW |
5226 | |
5227 | case KEY_values: | |
5228 | UNI(OP_VALUES); | |
5229 | ||
5230 | case KEY_vec: | |
a0d0e21e | 5231 | LOP(OP_VEC,XTERM); |
79072805 LW |
5232 | |
5233 | case KEY_while: | |
57843af0 | 5234 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5235 | OPERATOR(WHILE); |
5236 | ||
5237 | case KEY_warn: | |
3280af22 | 5238 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5239 | LOP(OP_WARN,XTERM); |
79072805 LW |
5240 | |
5241 | case KEY_wait: | |
5242 | FUN0(OP_WAIT); | |
5243 | ||
5244 | case KEY_waitpid: | |
a0d0e21e | 5245 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5246 | |
5247 | case KEY_wantarray: | |
5248 | FUN0(OP_WANTARRAY); | |
5249 | ||
5250 | case KEY_write: | |
9d116dd7 JH |
5251 | #ifdef EBCDIC |
5252 | { | |
df3728a2 JH |
5253 | char ctl_l[2]; |
5254 | ctl_l[0] = toCTRL('L'); | |
5255 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5256 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5257 | } | |
5258 | #else | |
5259 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5260 | #endif | |
79072805 LW |
5261 | UNI(OP_ENTERWRITE); |
5262 | ||
5263 | case KEY_x: | |
3280af22 | 5264 | if (PL_expect == XOPERATOR) |
79072805 LW |
5265 | Mop(OP_REPEAT); |
5266 | check_uni(); | |
5267 | goto just_a_word; | |
5268 | ||
a0d0e21e LW |
5269 | case KEY_xor: |
5270 | yylval.ival = OP_XOR; | |
5271 | OPERATOR(OROP); | |
5272 | ||
79072805 LW |
5273 | case KEY_y: |
5274 | s = scan_trans(s); | |
5275 | TERM(sublex_start()); | |
5276 | } | |
49dc05e3 | 5277 | }} |
79072805 | 5278 | } |
bf4acbe4 GS |
5279 | #ifdef __SC__ |
5280 | #pragma segment Main | |
5281 | #endif | |
79072805 | 5282 | |
e930465f JH |
5283 | static int |
5284 | S_pending_ident(pTHX) | |
8eceec63 SC |
5285 | { |
5286 | register char *d; | |
a55b55d8 | 5287 | register I32 tmp = 0; |
8eceec63 SC |
5288 | /* pit holds the identifier we read and pending_ident is reset */ |
5289 | char pit = PL_pending_ident; | |
5290 | PL_pending_ident = 0; | |
5291 | ||
5292 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5293 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5294 | ||
5295 | /* if we're in a my(), we can't allow dynamics here. | |
5296 | $foo'bar has already been turned into $foo::bar, so | |
5297 | just check for colons. | |
5298 | ||
5299 | if it's a legal name, the OP is a PADANY. | |
5300 | */ | |
5301 | if (PL_in_my) { | |
5302 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5303 | if (strchr(PL_tokenbuf,':')) | |
5304 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5305 | "variable %s in \"our\"", | |
5306 | PL_tokenbuf)); | |
dd2155a4 | 5307 | tmp = allocmy(PL_tokenbuf); |
8eceec63 SC |
5308 | } |
5309 | else { | |
5310 | if (strchr(PL_tokenbuf,':')) | |
5311 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5312 | ||
5313 | yylval.opval = newOP(OP_PADANY, 0); | |
dd2155a4 | 5314 | yylval.opval->op_targ = allocmy(PL_tokenbuf); |
8eceec63 SC |
5315 | return PRIVATEREF; |
5316 | } | |
5317 | } | |
5318 | ||
5319 | /* | |
5320 | build the ops for accesses to a my() variable. | |
5321 | ||
5322 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5323 | then used in a comparison. This catches most, but not | |
5324 | all cases. For instance, it catches | |
5325 | sort { my($a); $a <=> $b } | |
5326 | but not | |
5327 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5328 | (although why you'd do that is anyone's guess). | |
5329 | */ | |
5330 | ||
5331 | if (!strchr(PL_tokenbuf,':')) { | |
8716503d DM |
5332 | if (!PL_in_my) |
5333 | tmp = pad_findmy(PL_tokenbuf); | |
5334 | if (tmp != NOT_IN_PAD) { | |
8eceec63 | 5335 | /* might be an "our" variable" */ |
dd2155a4 | 5336 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
8eceec63 | 5337 | /* build ops for a bareword */ |
dd2155a4 | 5338 | SV *sym = newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)), 0); |
8eceec63 SC |
5339 | sv_catpvn(sym, "::", 2); |
5340 | sv_catpv(sym, PL_tokenbuf+1); | |
5341 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5342 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5343 | gv_fetchpv(SvPVX(sym), | |
5344 | (PL_in_eval | |
5345 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5346 | : GV_ADDMULTI |
8eceec63 SC |
5347 | ), |
5348 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5349 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5350 | : SVt_PVHV)); | |
5351 | return WORD; | |
5352 | } | |
5353 | ||
5354 | /* if it's a sort block and they're naming $a or $b */ | |
5355 | if (PL_last_lop_op == OP_SORT && | |
5356 | PL_tokenbuf[0] == '$' && | |
5357 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5358 | && !PL_tokenbuf[2]) | |
5359 | { | |
5360 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5361 | d < PL_bufend && *d != '\n'; | |
5362 | d++) | |
5363 | { | |
5364 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5365 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5366 | PL_tokenbuf); | |
5367 | } | |
5368 | } | |
5369 | } | |
5370 | ||
5371 | yylval.opval = newOP(OP_PADANY, 0); | |
5372 | yylval.opval->op_targ = tmp; | |
5373 | return PRIVATEREF; | |
5374 | } | |
5375 | } | |
5376 | ||
5377 | /* | |
5378 | Whine if they've said @foo in a doublequoted string, | |
5379 | and @foo isn't a variable we can find in the symbol | |
5380 | table. | |
5381 | */ | |
5382 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5383 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5384 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5385 | && ckWARN(WARN_AMBIGUOUS)) | |
5386 | { | |
5387 | /* Downgraded from fatal to warning 20000522 mjd */ | |
9014280d | 5388 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8eceec63 SC |
5389 | "Possible unintended interpolation of %s in string", |
5390 | PL_tokenbuf); | |
5391 | } | |
5392 | } | |
5393 | ||
5394 | /* build ops for a bareword */ | |
5395 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5396 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5397 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5398 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5399 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5400 | : SVt_PVHV)); | |
5401 | return WORD; | |
5402 | } | |
5403 | ||
79072805 | 5404 | I32 |
864dbfa3 | 5405 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5406 | { |
5407 | switch (*d) { | |
5408 | case '_': | |
5409 | if (d[1] == '_') { | |
a0d0e21e | 5410 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5411 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5412 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5413 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5414 | if (strEQ(d,"__END__")) return KEY___END__; |
5415 | } | |
5416 | break; | |
8990e307 LW |
5417 | case 'A': |
5418 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5419 | break; | |
79072805 | 5420 | case 'a': |
463ee0b2 LW |
5421 | switch (len) { |
5422 | case 3: | |
a0d0e21e LW |
5423 | if (strEQ(d,"and")) return -KEY_and; |
5424 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5425 | break; |
463ee0b2 | 5426 | case 5: |
a0d0e21e LW |
5427 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5428 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5429 | break; |
5430 | case 6: | |
a0d0e21e | 5431 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5432 | break; |
5433 | } | |
79072805 LW |
5434 | break; |
5435 | case 'B': | |
5436 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5437 | break; |
79072805 | 5438 | case 'b': |
a0d0e21e LW |
5439 | if (strEQ(d,"bless")) return -KEY_bless; |
5440 | if (strEQ(d,"bind")) return -KEY_bind; | |
5441 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5442 | break; | |
5443 | case 'C': | |
5444 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5445 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5446 | break; |
5447 | case 'c': | |
5448 | switch (len) { | |
5449 | case 3: | |
a0d0e21e LW |
5450 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5451 | if (strEQ(d,"chr")) return -KEY_chr; | |
5452 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5453 | break; |
5454 | case 4: | |
77bc9082 | 5455 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5456 | break; |
5457 | case 5: | |
a0d0e21e LW |
5458 | if (strEQ(d,"close")) return -KEY_close; |
5459 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5460 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5461 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5462 | if (strEQ(d,"chown")) return -KEY_chown; | |
5463 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5464 | break; |
5465 | case 6: | |
a0d0e21e LW |
5466 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5467 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5468 | break; |
5469 | case 7: | |
a0d0e21e | 5470 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5471 | break; |
5472 | case 8: | |
a0d0e21e LW |
5473 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5474 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5475 | break; |
5476 | } | |
5477 | break; | |
ed6116ce LW |
5478 | case 'D': |
5479 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5480 | break; | |
79072805 LW |
5481 | case 'd': |
5482 | switch (len) { | |
5483 | case 2: | |
5484 | if (strEQ(d,"do")) return KEY_do; | |
5485 | break; | |
5486 | case 3: | |
a0d0e21e | 5487 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5488 | break; |
5489 | case 4: | |
a0d0e21e | 5490 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5491 | break; |
5492 | case 6: | |
5493 | if (strEQ(d,"delete")) return KEY_delete; | |
5494 | break; | |
5495 | case 7: | |
5496 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5497 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5498 | break; |
5499 | case 8: | |
a0d0e21e | 5500 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5501 | break; |
5502 | } | |
5503 | break; | |
5504 | case 'E': | |
79072805 LW |
5505 | if (strEQ(d,"END")) return KEY_END; |
5506 | break; | |
5507 | case 'e': | |
5508 | switch (len) { | |
5509 | case 2: | |
a0d0e21e | 5510 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5511 | break; |
5512 | case 3: | |
a0d0e21e | 5513 | if (strEQ(d,"eof")) return -KEY_eof; |
c963b151 | 5514 | if (strEQ(d,"err")) return -KEY_err; |
a0d0e21e | 5515 | if (strEQ(d,"exp")) return -KEY_exp; |
79072805 LW |
5516 | break; |
5517 | case 4: | |
5518 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5519 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5520 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5521 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5522 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5523 | break; |
5524 | case 5: | |
5525 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5526 | break; | |
a0d0e21e LW |
5527 | case 6: |
5528 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5529 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5530 | break; |
79072805 | 5531 | case 8: |
a0d0e21e LW |
5532 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5533 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5534 | break; |
5535 | case 9: | |
a0d0e21e | 5536 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5537 | break; |
5538 | case 10: | |
a0d0e21e LW |
5539 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5540 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5541 | break; |
5542 | case 11: | |
a0d0e21e | 5543 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5544 | break; |
a687059c | 5545 | } |
a687059c | 5546 | break; |
79072805 LW |
5547 | case 'f': |
5548 | switch (len) { | |
5549 | case 3: | |
5550 | if (strEQ(d,"for")) return KEY_for; | |
5551 | break; | |
5552 | case 4: | |
a0d0e21e | 5553 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5554 | break; |
5555 | case 5: | |
a0d0e21e LW |
5556 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5557 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5558 | break; |
5559 | case 6: | |
5560 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5561 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5562 | break; |
5563 | case 7: | |
5564 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5565 | break; | |
5566 | case 8: | |
a0d0e21e | 5567 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5568 | break; |
378cc40b | 5569 | } |
a687059c | 5570 | break; |
79072805 | 5571 | case 'g': |
a687059c LW |
5572 | if (strnEQ(d,"get",3)) { |
5573 | d += 3; | |
5574 | if (*d == 'p') { | |
79072805 LW |
5575 | switch (len) { |
5576 | case 7: | |
a0d0e21e LW |
5577 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5578 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5579 | break; |
5580 | case 8: | |
a0d0e21e LW |
5581 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5582 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5583 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5584 | break; |
5585 | case 11: | |
a0d0e21e LW |
5586 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5587 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5588 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5589 | break; |
5590 | case 14: | |
a0d0e21e | 5591 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5592 | break; |
5593 | case 16: | |
a0d0e21e | 5594 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5595 | break; |
5596 | } | |
a687059c LW |
5597 | } |
5598 | else if (*d == 'h') { | |
a0d0e21e LW |
5599 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5600 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5601 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5602 | } |
5603 | else if (*d == 'n') { | |
a0d0e21e LW |
5604 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5605 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5606 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5607 | } |
5608 | else if (*d == 's') { | |
a0d0e21e LW |
5609 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5610 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5611 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5612 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5613 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5614 | } |
5615 | else if (*d == 'g') { | |
a0d0e21e LW |
5616 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5617 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5618 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5619 | } |
5620 | else if (*d == 'l') { | |
a0d0e21e | 5621 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5622 | } |
a0d0e21e | 5623 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5624 | break; |
a687059c | 5625 | } |
79072805 LW |
5626 | switch (len) { |
5627 | case 2: | |
a0d0e21e LW |
5628 | if (strEQ(d,"gt")) return -KEY_gt; |
5629 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5630 | break; |
5631 | case 4: | |
5632 | if (strEQ(d,"grep")) return KEY_grep; | |
5633 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5634 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5635 | break; |
5636 | case 6: | |
a0d0e21e | 5637 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5638 | break; |
378cc40b | 5639 | } |
a687059c | 5640 | break; |
79072805 | 5641 | case 'h': |
a0d0e21e | 5642 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5643 | break; |
7d07dbc2 MB |
5644 | case 'I': |
5645 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5646 | break; | |
79072805 LW |
5647 | case 'i': |
5648 | switch (len) { | |
5649 | case 2: | |
5650 | if (strEQ(d,"if")) return KEY_if; | |
5651 | break; | |
5652 | case 3: | |
a0d0e21e | 5653 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5654 | break; |
5655 | case 5: | |
a0d0e21e LW |
5656 | if (strEQ(d,"index")) return -KEY_index; |
5657 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5658 | break; |
5659 | } | |
a687059c | 5660 | break; |
79072805 | 5661 | case 'j': |
a0d0e21e | 5662 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5663 | break; |
79072805 LW |
5664 | case 'k': |
5665 | if (len == 4) { | |
3a6a8333 | 5666 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5667 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5668 | } |
79072805 | 5669 | break; |
79072805 LW |
5670 | case 'l': |
5671 | switch (len) { | |
5672 | case 2: | |
a0d0e21e LW |
5673 | if (strEQ(d,"lt")) return -KEY_lt; |
5674 | if (strEQ(d,"le")) return -KEY_le; | |
5675 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5676 | break; |
5677 | case 3: | |
a0d0e21e | 5678 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5679 | break; |
5680 | case 4: | |
5681 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5682 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5683 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5684 | break; |
79072805 LW |
5685 | case 5: |
5686 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5687 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5688 | break; |
5689 | case 6: | |
a0d0e21e LW |
5690 | if (strEQ(d,"length")) return -KEY_length; |
5691 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5692 | break; |
5693 | case 7: | |
a0d0e21e | 5694 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5695 | break; |
5696 | case 9: | |
a0d0e21e | 5697 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5698 | break; |
5699 | } | |
a687059c | 5700 | break; |
79072805 LW |
5701 | case 'm': |
5702 | switch (len) { | |
5703 | case 1: return KEY_m; | |
93a17b20 LW |
5704 | case 2: |
5705 | if (strEQ(d,"my")) return KEY_my; | |
5706 | break; | |
a0d0e21e LW |
5707 | case 3: |
5708 | if (strEQ(d,"map")) return KEY_map; | |
5709 | break; | |
79072805 | 5710 | case 5: |
a0d0e21e | 5711 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5712 | break; |
5713 | case 6: | |
a0d0e21e LW |
5714 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5715 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5716 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5717 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5718 | break; |
5719 | } | |
a687059c | 5720 | break; |
79072805 LW |
5721 | case 'n': |
5722 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5723 | if (strEQ(d,"ne")) return -KEY_ne; |
5724 | if (strEQ(d,"not")) return -KEY_not; | |
5725 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5726 | break; |
79072805 LW |
5727 | case 'o': |
5728 | switch (len) { | |
463ee0b2 | 5729 | case 2: |
a0d0e21e | 5730 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5731 | break; |
79072805 | 5732 | case 3: |
a0d0e21e LW |
5733 | if (strEQ(d,"ord")) return -KEY_ord; |
5734 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5735 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5736 | break; |
5737 | case 4: | |
a0d0e21e | 5738 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5739 | break; |
5740 | case 7: | |
a0d0e21e | 5741 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5742 | break; |
fe14fcc3 | 5743 | } |
a687059c | 5744 | break; |
79072805 LW |
5745 | case 'p': |
5746 | switch (len) { | |
5747 | case 3: | |
4e553d73 | 5748 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5749 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5750 | break; |
5751 | case 4: | |
3a6a8333 | 5752 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5753 | if (strEQ(d,"pack")) return -KEY_pack; |
5754 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5755 | break; |
5756 | case 5: | |
5757 | if (strEQ(d,"print")) return KEY_print; | |
5758 | break; | |
5759 | case 6: | |
5760 | if (strEQ(d,"printf")) return KEY_printf; | |
5761 | break; | |
5762 | case 7: | |
5763 | if (strEQ(d,"package")) return KEY_package; | |
5764 | break; | |
c07a80fd | 5765 | case 9: |
5766 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5767 | } |
79072805 LW |
5768 | break; |
5769 | case 'q': | |
5770 | if (len <= 2) { | |
5771 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5772 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5773 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5774 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5775 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5776 | } |
a0d0e21e | 5777 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5778 | break; |
5779 | case 'r': | |
5780 | switch (len) { | |
5781 | case 3: | |
a0d0e21e | 5782 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5783 | break; |
5784 | case 4: | |
a0d0e21e LW |
5785 | if (strEQ(d,"read")) return -KEY_read; |
5786 | if (strEQ(d,"rand")) return -KEY_rand; | |
5787 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5788 | if (strEQ(d,"redo")) return KEY_redo; |
5789 | break; | |
5790 | case 5: | |
a0d0e21e LW |
5791 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5792 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5793 | break; |
5794 | case 6: | |
5795 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5796 | if (strEQ(d,"rename")) return -KEY_rename; |
5797 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5798 | break; |
5799 | case 7: | |
ec4ab249 | 5800 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5801 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5802 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5803 | break; |
5804 | case 8: | |
a0d0e21e LW |
5805 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5806 | if (strEQ(d,"readline")) return -KEY_readline; | |
5807 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5808 | break; |
5809 | case 9: | |
a0d0e21e | 5810 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5811 | break; |
a687059c | 5812 | } |
79072805 LW |
5813 | break; |
5814 | case 's': | |
a687059c | 5815 | switch (d[1]) { |
79072805 | 5816 | case 0: return KEY_s; |
a687059c | 5817 | case 'c': |
79072805 | 5818 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5819 | break; |
5820 | case 'e': | |
79072805 LW |
5821 | switch (len) { |
5822 | case 4: | |
a0d0e21e LW |
5823 | if (strEQ(d,"seek")) return -KEY_seek; |
5824 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5825 | break; |
5826 | case 5: | |
a0d0e21e | 5827 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5828 | break; |
5829 | case 6: | |
a0d0e21e LW |
5830 | if (strEQ(d,"select")) return -KEY_select; |
5831 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5832 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5833 | break; |
5834 | case 7: | |
a0d0e21e LW |
5835 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5836 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5837 | break; |
5838 | case 8: | |
a0d0e21e LW |
5839 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5840 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5841 | break; |
5842 | case 9: | |
a0d0e21e | 5843 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5844 | break; |
5845 | case 10: | |
a0d0e21e LW |
5846 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5847 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5848 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5849 | break; |
5850 | case 11: | |
a0d0e21e LW |
5851 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5852 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5853 | break; |
5854 | } | |
a687059c LW |
5855 | break; |
5856 | case 'h': | |
79072805 LW |
5857 | switch (len) { |
5858 | case 5: | |
3a6a8333 | 5859 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
5860 | break; |
5861 | case 6: | |
a0d0e21e LW |
5862 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5863 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5864 | break; |
5865 | case 7: | |
a0d0e21e | 5866 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5867 | break; |
5868 | case 8: | |
a0d0e21e LW |
5869 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5870 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5871 | break; |
5872 | } | |
a687059c LW |
5873 | break; |
5874 | case 'i': | |
a0d0e21e | 5875 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5876 | break; |
5877 | case 'l': | |
a0d0e21e | 5878 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5879 | break; |
5880 | case 'o': | |
79072805 | 5881 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5882 | if (strEQ(d,"socket")) return -KEY_socket; |
5883 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5884 | break; |
5885 | case 'p': | |
79072805 | 5886 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5887 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 5888 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
5889 | break; |
5890 | case 'q': | |
a0d0e21e | 5891 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5892 | break; |
5893 | case 'r': | |
a0d0e21e | 5894 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5895 | break; |
5896 | case 't': | |
a0d0e21e | 5897 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5898 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5899 | break; |
5900 | case 'u': | |
a0d0e21e | 5901 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5902 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5903 | break; |
5904 | case 'y': | |
79072805 LW |
5905 | switch (len) { |
5906 | case 6: | |
a0d0e21e | 5907 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5908 | break; |
5909 | case 7: | |
a0d0e21e LW |
5910 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5911 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5912 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5913 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5914 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5915 | break; |
5916 | case 8: | |
a0d0e21e | 5917 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5918 | break; |
a687059c | 5919 | } |
a687059c LW |
5920 | break; |
5921 | } | |
5922 | break; | |
79072805 LW |
5923 | case 't': |
5924 | switch (len) { | |
5925 | case 2: | |
5926 | if (strEQ(d,"tr")) return KEY_tr; | |
5927 | break; | |
463ee0b2 LW |
5928 | case 3: |
5929 | if (strEQ(d,"tie")) return KEY_tie; | |
5930 | break; | |
79072805 | 5931 | case 4: |
a0d0e21e | 5932 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5933 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5934 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5935 | break; |
5936 | case 5: | |
a0d0e21e | 5937 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5938 | break; |
5939 | case 7: | |
a0d0e21e | 5940 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5941 | break; |
5942 | case 8: | |
a0d0e21e | 5943 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5944 | break; |
378cc40b | 5945 | } |
a687059c | 5946 | break; |
79072805 LW |
5947 | case 'u': |
5948 | switch (len) { | |
5949 | case 2: | |
a0d0e21e LW |
5950 | if (strEQ(d,"uc")) return -KEY_uc; |
5951 | break; | |
5952 | case 3: | |
5953 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5954 | break; |
5955 | case 5: | |
5956 | if (strEQ(d,"undef")) return KEY_undef; | |
5957 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5958 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5959 | if (strEQ(d,"utime")) return -KEY_utime; |
5960 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5961 | break; |
5962 | case 6: | |
5963 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5964 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5965 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5966 | break; |
5967 | case 7: | |
3a6a8333 | 5968 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 5969 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5970 | break; |
a687059c LW |
5971 | } |
5972 | break; | |
79072805 | 5973 | case 'v': |
a0d0e21e LW |
5974 | if (strEQ(d,"values")) return -KEY_values; |
5975 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5976 | break; |
79072805 LW |
5977 | case 'w': |
5978 | switch (len) { | |
5979 | case 4: | |
a0d0e21e LW |
5980 | if (strEQ(d,"warn")) return -KEY_warn; |
5981 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5982 | break; |
5983 | case 5: | |
5984 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5985 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5986 | break; |
5987 | case 7: | |
a0d0e21e | 5988 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5989 | break; |
5990 | case 9: | |
a0d0e21e | 5991 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5992 | break; |
2f3197b3 | 5993 | } |
a687059c | 5994 | break; |
79072805 | 5995 | case 'x': |
a0d0e21e LW |
5996 | if (len == 1) return -KEY_x; |
5997 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5998 | break; |
79072805 LW |
5999 | case 'y': |
6000 | if (len == 1) return KEY_y; | |
6001 | break; | |
6002 | case 'z': | |
a687059c LW |
6003 | break; |
6004 | } | |
79072805 | 6005 | return 0; |
a687059c LW |
6006 | } |
6007 | ||
76e3520e | 6008 | STATIC void |
cea2e8a9 | 6009 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 6010 | { |
2f3197b3 LW |
6011 | char *w; |
6012 | ||
d008e5eb | 6013 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
6014 | if (ckWARN(WARN_SYNTAX)) { |
6015 | int level = 1; | |
6016 | for (w = s+2; *w && level; w++) { | |
6017 | if (*w == '(') | |
6018 | ++level; | |
6019 | else if (*w == ')') | |
6020 | --level; | |
6021 | } | |
6022 | if (*w) | |
6023 | for (; *w && isSPACE(*w); w++) ; | |
6024 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
9014280d | 6025 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 6026 | "%s (...) interpreted as function",name); |
d008e5eb | 6027 | } |
2f3197b3 | 6028 | } |
3280af22 | 6029 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 6030 | s++; |
a687059c LW |
6031 | if (*s == '(') |
6032 | s++; | |
3280af22 | 6033 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6034 | s++; |
7e2040f0 | 6035 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 6036 | w = s++; |
7e2040f0 | 6037 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 6038 | s++; |
3280af22 | 6039 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6040 | s++; |
e929a76b | 6041 | if (*s == ',') { |
463ee0b2 | 6042 | int kw; |
e929a76b | 6043 | *s = '\0'; |
864dbfa3 | 6044 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 6045 | *s = ','; |
463ee0b2 | 6046 | if (kw) |
e929a76b | 6047 | return; |
cea2e8a9 | 6048 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
6049 | } |
6050 | } | |
6051 | } | |
6052 | ||
423cee85 JH |
6053 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
6054 | Best used as sv=new_constant(..., sv, ...). | |
6055 | If s, pv are NULL, calls subroutine with one argument, | |
6056 | and type is used with error messages only. */ | |
6057 | ||
b3ac6de7 | 6058 | STATIC SV * |
dff6d3cd | 6059 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 6060 | const char *type) |
b3ac6de7 | 6061 | { |
b3ac6de7 | 6062 | dSP; |
3280af22 | 6063 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 6064 | SV *res; |
b3ac6de7 IZ |
6065 | SV **cvp; |
6066 | SV *cv, *typesv; | |
f0af216f | 6067 | const char *why1, *why2, *why3; |
4e553d73 | 6068 | |
f0af216f | 6069 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
6070 | SV *msg; |
6071 | ||
f0af216f | 6072 | why2 = strEQ(key,"charnames") |
41ab332f | 6073 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 6074 | : ""; |
4e553d73 | 6075 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
6076 | (type ? type: "undef"), why2); |
6077 | ||
6078 | /* This is convoluted and evil ("goto considered harmful") | |
6079 | * but I do not understand the intricacies of all the different | |
6080 | * failure modes of %^H in here. The goal here is to make | |
6081 | * the most probable error message user-friendly. --jhi */ | |
6082 | ||
6083 | goto msgdone; | |
6084 | ||
423cee85 | 6085 | report: |
4e553d73 | 6086 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 6087 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 6088 | msgdone: |
423cee85 JH |
6089 | yyerror(SvPVX(msg)); |
6090 | SvREFCNT_dec(msg); | |
6091 | return sv; | |
6092 | } | |
b3ac6de7 IZ |
6093 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
6094 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
6095 | why1 = "$^H{"; |
6096 | why2 = key; | |
f0af216f | 6097 | why3 = "} is not defined"; |
423cee85 | 6098 | goto report; |
b3ac6de7 IZ |
6099 | } |
6100 | sv_2mortal(sv); /* Parent created it permanently */ | |
6101 | cv = *cvp; | |
423cee85 JH |
6102 | if (!pv && s) |
6103 | pv = sv_2mortal(newSVpvn(s, len)); | |
6104 | if (type && pv) | |
6105 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6106 | else |
423cee85 | 6107 | typesv = &PL_sv_undef; |
4e553d73 | 6108 | |
e788e7d3 | 6109 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6110 | ENTER ; |
6111 | SAVETMPS; | |
4e553d73 | 6112 | |
423cee85 | 6113 | PUSHMARK(SP) ; |
a5845cb7 | 6114 | EXTEND(sp, 3); |
423cee85 JH |
6115 | if (pv) |
6116 | PUSHs(pv); | |
b3ac6de7 | 6117 | PUSHs(sv); |
423cee85 JH |
6118 | if (pv) |
6119 | PUSHs(typesv); | |
b3ac6de7 | 6120 | PUTBACK; |
423cee85 | 6121 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6122 | |
423cee85 | 6123 | SPAGAIN ; |
4e553d73 | 6124 | |
423cee85 | 6125 | /* Check the eval first */ |
9b0e499b | 6126 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6127 | STRLEN n_a; |
6128 | sv_catpv(ERRSV, "Propagated"); | |
6129 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6130 | (void)POPs; |
423cee85 JH |
6131 | res = SvREFCNT_inc(sv); |
6132 | } | |
6133 | else { | |
6134 | res = POPs; | |
e1f15930 | 6135 | (void)SvREFCNT_inc(res); |
423cee85 | 6136 | } |
4e553d73 | 6137 | |
423cee85 JH |
6138 | PUTBACK ; |
6139 | FREETMPS ; | |
6140 | LEAVE ; | |
b3ac6de7 | 6141 | POPSTACK; |
4e553d73 | 6142 | |
b3ac6de7 | 6143 | if (!SvOK(res)) { |
423cee85 JH |
6144 | why1 = "Call to &{$^H{"; |
6145 | why2 = key; | |
f0af216f | 6146 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6147 | sv = res; |
6148 | goto report; | |
9b0e499b | 6149 | } |
423cee85 | 6150 | |
9b0e499b | 6151 | return res; |
b3ac6de7 | 6152 | } |
4e553d73 | 6153 | |
76e3520e | 6154 | STATIC char * |
cea2e8a9 | 6155 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6156 | { |
6157 | register char *d = dest; | |
8903cb82 | 6158 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6159 | for (;;) { |
8903cb82 | 6160 | if (d >= e) |
cea2e8a9 | 6161 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6162 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6163 | *d++ = *s++; |
7e2040f0 | 6164 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6165 | *d++ = ':'; |
6166 | *d++ = ':'; | |
6167 | s++; | |
6168 | } | |
c3e0f903 | 6169 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6170 | *d++ = *s++; |
6171 | *d++ = *s++; | |
6172 | } | |
fd400ab9 | 6173 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6174 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6175 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6176 | t += UTF8SKIP(t); |
6177 | if (d + (t - s) > e) | |
cea2e8a9 | 6178 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6179 | Copy(s, d, t - s, char); |
6180 | d += t - s; | |
6181 | s = t; | |
6182 | } | |
463ee0b2 LW |
6183 | else { |
6184 | *d = '\0'; | |
6185 | *slp = d - dest; | |
6186 | return s; | |
e929a76b | 6187 | } |
378cc40b LW |
6188 | } |
6189 | } | |
6190 | ||
76e3520e | 6191 | STATIC char * |
cea2e8a9 | 6192 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6193 | { |
6194 | register char *d; | |
8903cb82 | 6195 | register char *e; |
79072805 | 6196 | char *bracket = 0; |
748a9306 | 6197 | char funny = *s++; |
378cc40b | 6198 | |
a0d0e21e LW |
6199 | if (isSPACE(*s)) |
6200 | s = skipspace(s); | |
378cc40b | 6201 | d = dest; |
8903cb82 | 6202 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6203 | if (isDIGIT(*s)) { |
8903cb82 | 6204 | while (isDIGIT(*s)) { |
6205 | if (d >= e) | |
cea2e8a9 | 6206 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6207 | *d++ = *s++; |
8903cb82 | 6208 | } |
378cc40b LW |
6209 | } |
6210 | else { | |
463ee0b2 | 6211 | for (;;) { |
8903cb82 | 6212 | if (d >= e) |
cea2e8a9 | 6213 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6214 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6215 | *d++ = *s++; |
7e2040f0 | 6216 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6217 | *d++ = ':'; |
6218 | *d++ = ':'; | |
6219 | s++; | |
6220 | } | |
a0d0e21e | 6221 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6222 | *d++ = *s++; |
6223 | *d++ = *s++; | |
6224 | } | |
fd400ab9 | 6225 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6226 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6227 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6228 | t += UTF8SKIP(t); |
6229 | if (d + (t - s) > e) | |
cea2e8a9 | 6230 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6231 | Copy(s, d, t - s, char); |
6232 | d += t - s; | |
6233 | s = t; | |
6234 | } | |
463ee0b2 LW |
6235 | else |
6236 | break; | |
6237 | } | |
378cc40b LW |
6238 | } |
6239 | *d = '\0'; | |
6240 | d = dest; | |
79072805 | 6241 | if (*d) { |
3280af22 NIS |
6242 | if (PL_lex_state != LEX_NORMAL) |
6243 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6244 | return s; |
378cc40b | 6245 | } |
748a9306 | 6246 | if (*s == '$' && s[1] && |
7e2040f0 | 6247 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6248 | { |
4810e5ec | 6249 | return s; |
5cd24f17 | 6250 | } |
79072805 LW |
6251 | if (*s == '{') { |
6252 | bracket = s; | |
6253 | s++; | |
6254 | } | |
6255 | else if (ck_uni) | |
6256 | check_uni(); | |
93a17b20 | 6257 | if (s < send) |
79072805 LW |
6258 | *d = *s++; |
6259 | d[1] = '\0'; | |
2b92dfce | 6260 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6261 | *d = toCTRL(*s); |
6262 | s++; | |
de3bb511 | 6263 | } |
79072805 | 6264 | if (bracket) { |
748a9306 | 6265 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6266 | while (s < send) { |
6267 | char ch = *s++; | |
bf4acbe4 | 6268 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6269 | *d = ch; |
6270 | break; | |
6271 | } | |
6272 | } | |
748a9306 | 6273 | } |
7e2040f0 | 6274 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6275 | d++; |
a0ed51b3 LW |
6276 | if (UTF) { |
6277 | e = s; | |
155aba94 | 6278 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6279 | e += UTF8SKIP(e); |
fd400ab9 | 6280 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6281 | e += UTF8SKIP(e); |
6282 | } | |
6283 | Copy(s, d, e - s, char); | |
6284 | d += e - s; | |
6285 | s = e; | |
6286 | } | |
6287 | else { | |
2b92dfce | 6288 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6289 | *d++ = *s++; |
2b92dfce | 6290 | if (d >= e) |
cea2e8a9 | 6291 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6292 | } |
79072805 | 6293 | *d = '\0'; |
bf4acbe4 | 6294 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6295 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6296 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6297 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
9014280d | 6298 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 6299 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6300 | funny, dest, brack, funny, dest, brack); |
6301 | } | |
79072805 | 6302 | bracket++; |
a0be28da | 6303 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6304 | return s; |
6305 | } | |
4e553d73 NIS |
6306 | } |
6307 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6308 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6309 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6310 | && isALNUM(*s)) | |
6311 | { | |
6312 | d++; | |
6313 | while (isALNUM(*s) && d < e) { | |
6314 | *d++ = *s++; | |
6315 | } | |
6316 | if (d >= e) | |
cea2e8a9 | 6317 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6318 | *d = '\0'; |
79072805 LW |
6319 | } |
6320 | if (*s == '}') { | |
6321 | s++; | |
7df0d042 | 6322 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 6323 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
6324 | PL_expect = XREF; |
6325 | } | |
748a9306 LW |
6326 | if (funny == '#') |
6327 | funny = '@'; | |
d008e5eb | 6328 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6329 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6330 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6331 | { |
9014280d | 6332 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
6333 | "Ambiguous use of %c{%s} resolved to %c%s", |
6334 | funny, dest, funny, dest); | |
6335 | } | |
6336 | } | |
79072805 LW |
6337 | } |
6338 | else { | |
6339 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6340 | *dest = '\0'; |
79072805 LW |
6341 | } |
6342 | } | |
3280af22 NIS |
6343 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6344 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6345 | return s; |
6346 | } | |
6347 | ||
cea2e8a9 | 6348 | void |
2b36a5a0 | 6349 | Perl_pmflag(pTHX_ U32* pmfl, int ch) |
a0d0e21e | 6350 | { |
bbce6d69 | 6351 | if (ch == 'i') |
a0d0e21e | 6352 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6353 | else if (ch == 'g') |
6354 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6355 | else if (ch == 'c') |
6356 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6357 | else if (ch == 'o') |
6358 | *pmfl |= PMf_KEEP; | |
6359 | else if (ch == 'm') | |
6360 | *pmfl |= PMf_MULTILINE; | |
6361 | else if (ch == 's') | |
6362 | *pmfl |= PMf_SINGLELINE; | |
6363 | else if (ch == 'x') | |
6364 | *pmfl |= PMf_EXTENDED; | |
6365 | } | |
378cc40b | 6366 | |
76e3520e | 6367 | STATIC char * |
cea2e8a9 | 6368 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6369 | { |
79072805 LW |
6370 | PMOP *pm; |
6371 | char *s; | |
378cc40b | 6372 | |
09bef843 | 6373 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6374 | if (!s) |
cea2e8a9 | 6375 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6376 | |
8782bef2 | 6377 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6378 | if (PL_multi_open == '?') |
79072805 | 6379 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6380 | if(type == OP_QR) { |
6381 | while (*s && strchr("iomsx", *s)) | |
6382 | pmflag(&pm->op_pmflags,*s++); | |
6383 | } | |
6384 | else { | |
6385 | while (*s && strchr("iogcmsx", *s)) | |
6386 | pmflag(&pm->op_pmflags,*s++); | |
6387 | } | |
4ac733c9 MJD |
6388 | /* issue a warning if /c is specified,but /g is not */ |
6389 | if (ckWARN(WARN_REGEXP) && | |
6390 | (pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) | |
6391 | { | |
6392 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_without_g); | |
6393 | } | |
6394 | ||
4633a7c4 | 6395 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6396 | |
3280af22 | 6397 | PL_lex_op = (OP*)pm; |
79072805 | 6398 | yylval.ival = OP_MATCH; |
378cc40b LW |
6399 | return s; |
6400 | } | |
6401 | ||
76e3520e | 6402 | STATIC char * |
cea2e8a9 | 6403 | S_scan_subst(pTHX_ char *start) |
79072805 | 6404 | { |
a0d0e21e | 6405 | register char *s; |
79072805 | 6406 | register PMOP *pm; |
4fdae800 | 6407 | I32 first_start; |
79072805 LW |
6408 | I32 es = 0; |
6409 | ||
79072805 LW |
6410 | yylval.ival = OP_NULL; |
6411 | ||
09bef843 | 6412 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6413 | |
37fd879b | 6414 | if (!s) |
cea2e8a9 | 6415 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6416 | |
3280af22 | 6417 | if (s[-1] == PL_multi_open) |
79072805 LW |
6418 | s--; |
6419 | ||
3280af22 | 6420 | first_start = PL_multi_start; |
09bef843 | 6421 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6422 | if (!s) { |
37fd879b | 6423 | if (PL_lex_stuff) { |
3280af22 | 6424 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6425 | PL_lex_stuff = Nullsv; |
6426 | } | |
cea2e8a9 | 6427 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6428 | } |
3280af22 | 6429 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6430 | |
79072805 | 6431 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6432 | while (*s) { |
a687059c LW |
6433 | if (*s == 'e') { |
6434 | s++; | |
2f3197b3 | 6435 | es++; |
a687059c | 6436 | } |
b3eb6a9b | 6437 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6438 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6439 | else |
6440 | break; | |
378cc40b | 6441 | } |
79072805 | 6442 | |
64e578a2 MJD |
6443 | /* /c is not meaningful with s/// */ |
6444 | if (ckWARN(WARN_REGEXP) && (pm->op_pmflags & PMf_CONTINUE)) | |
4ac733c9 | 6445 | { |
64e578a2 | 6446 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_in_subst); |
4ac733c9 MJD |
6447 | } |
6448 | ||
79072805 LW |
6449 | if (es) { |
6450 | SV *repl; | |
0244c3a4 GS |
6451 | PL_sublex_info.super_bufptr = s; |
6452 | PL_sublex_info.super_bufend = PL_bufend; | |
6453 | PL_multi_end = 0; | |
79072805 | 6454 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6455 | repl = newSVpvn("",0); |
463ee0b2 | 6456 | while (es-- > 0) |
a0d0e21e | 6457 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6458 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6459 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6460 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6461 | SvEVALED_on(repl); |
3280af22 NIS |
6462 | SvREFCNT_dec(PL_lex_repl); |
6463 | PL_lex_repl = repl; | |
378cc40b | 6464 | } |
79072805 | 6465 | |
4633a7c4 | 6466 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6467 | PL_lex_op = (OP*)pm; |
79072805 | 6468 | yylval.ival = OP_SUBST; |
378cc40b LW |
6469 | return s; |
6470 | } | |
6471 | ||
76e3520e | 6472 | STATIC char * |
cea2e8a9 | 6473 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6474 | { |
a0d0e21e | 6475 | register char* s; |
11343788 | 6476 | OP *o; |
79072805 LW |
6477 | short *tbl; |
6478 | I32 squash; | |
a0ed51b3 | 6479 | I32 del; |
79072805 LW |
6480 | I32 complement; |
6481 | ||
6482 | yylval.ival = OP_NULL; | |
6483 | ||
09bef843 | 6484 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6485 | if (!s) |
cea2e8a9 | 6486 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6487 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6488 | s--; |
6489 | ||
09bef843 | 6490 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6491 | if (!s) { |
37fd879b | 6492 | if (PL_lex_stuff) { |
3280af22 | 6493 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6494 | PL_lex_stuff = Nullsv; |
6495 | } | |
cea2e8a9 | 6496 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6497 | } |
79072805 | 6498 | |
a0ed51b3 | 6499 | complement = del = squash = 0; |
6940069f | 6500 | while (strchr("cds", *s)) { |
395c3793 | 6501 | if (*s == 'c') |
79072805 | 6502 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6503 | else if (*s == 'd') |
a0ed51b3 LW |
6504 | del = OPpTRANS_DELETE; |
6505 | else if (*s == 's') | |
79072805 | 6506 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6507 | s++; |
6508 | } | |
8973db79 JH |
6509 | |
6510 | New(803, tbl, complement&&!del?258:256, short); | |
6511 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
7948272d NIS |
6512 | o->op_private = del|squash|complement| |
6513 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| | |
6514 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6515 | |
3280af22 | 6516 | PL_lex_op = o; |
79072805 LW |
6517 | yylval.ival = OP_TRANS; |
6518 | return s; | |
6519 | } | |
6520 | ||
76e3520e | 6521 | STATIC char * |
cea2e8a9 | 6522 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6523 | { |
6524 | SV *herewas; | |
6525 | I32 op_type = OP_SCALAR; | |
6526 | I32 len; | |
6527 | SV *tmpstr; | |
6528 | char term; | |
6529 | register char *d; | |
fc36a67e | 6530 | register char *e; |
4633a7c4 | 6531 | char *peek; |
3280af22 | 6532 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6533 | |
6534 | s += 2; | |
3280af22 NIS |
6535 | d = PL_tokenbuf; |
6536 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6537 | if (!outer) |
79072805 | 6538 | *d++ = '\n'; |
bf4acbe4 | 6539 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6540 | if (*peek && strchr("`'\"",*peek)) { |
6541 | s = peek; | |
79072805 | 6542 | term = *s++; |
3280af22 | 6543 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6544 | d += len; |
3280af22 | 6545 | if (s < PL_bufend) |
79072805 | 6546 | s++; |
79072805 LW |
6547 | } |
6548 | else { | |
6549 | if (*s == '\\') | |
6550 | s++, term = '\''; | |
6551 | else | |
6552 | term = '"'; | |
7e2040f0 | 6553 | if (!isALNUM_lazy_if(s,UTF)) |
12bcd1a6 | 6554 | deprecate_old("bare << to mean <<\"\""); |
7e2040f0 | 6555 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6556 | if (d < e) |
6557 | *d++ = *s; | |
6558 | } | |
6559 | } | |
3280af22 | 6560 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6561 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6562 | *d++ = '\n'; |
6563 | *d = '\0'; | |
3280af22 | 6564 | len = d - PL_tokenbuf; |
6a27c188 | 6565 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6566 | d = strchr(s, '\r'); |
6567 | if (d) { | |
6568 | char *olds = s; | |
6569 | s = d; | |
3280af22 | 6570 | while (s < PL_bufend) { |
f63a84b2 LW |
6571 | if (*s == '\r') { |
6572 | *d++ = '\n'; | |
6573 | if (*++s == '\n') | |
6574 | s++; | |
6575 | } | |
6576 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6577 | *d++ = *s++; | |
6578 | s++; | |
6579 | } | |
6580 | else | |
6581 | *d++ = *s++; | |
6582 | } | |
6583 | *d = '\0'; | |
3280af22 NIS |
6584 | PL_bufend = d; |
6585 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6586 | s = olds; |
6587 | } | |
6588 | #endif | |
79072805 | 6589 | d = "\n"; |
3280af22 | 6590 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6591 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6592 | else |
79cb57f6 | 6593 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6594 | s += SvCUR(herewas); |
748a9306 | 6595 | |
8d6dde3e | 6596 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6597 | sv_upgrade(tmpstr, SVt_PVIV); |
6598 | if (term == '\'') { | |
79072805 | 6599 | op_type = OP_CONST; |
748a9306 LW |
6600 | SvIVX(tmpstr) = -1; |
6601 | } | |
6602 | else if (term == '`') { | |
79072805 | 6603 | op_type = OP_BACKTICK; |
748a9306 LW |
6604 | SvIVX(tmpstr) = '\\'; |
6605 | } | |
79072805 LW |
6606 | |
6607 | CLINE; | |
57843af0 | 6608 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6609 | PL_multi_open = PL_multi_close = '<'; |
6610 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6611 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6612 | char *bufptr = PL_sublex_info.super_bufptr; | |
6613 | char *bufend = PL_sublex_info.super_bufend; | |
6614 | char *olds = s - SvCUR(herewas); | |
6615 | s = strchr(bufptr, '\n'); | |
6616 | if (!s) | |
6617 | s = bufend; | |
6618 | d = s; | |
6619 | while (s < bufend && | |
6620 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6621 | if (*s++ == '\n') | |
57843af0 | 6622 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6623 | } |
6624 | if (s >= bufend) { | |
eb160463 | 6625 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
6626 | missingterm(PL_tokenbuf); |
6627 | } | |
6628 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6629 | sv_setpvn(tmpstr,d+1,s-d); | |
6630 | s += len - 1; | |
6631 | sv_catpvn(herewas,s,bufend-s); | |
6632 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6633 | ||
6634 | s = olds; | |
6635 | goto retval; | |
6636 | } | |
6637 | else if (!outer) { | |
79072805 | 6638 | d = s; |
3280af22 NIS |
6639 | while (s < PL_bufend && |
6640 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6641 | if (*s++ == '\n') |
57843af0 | 6642 | CopLINE_inc(PL_curcop); |
79072805 | 6643 | } |
3280af22 | 6644 | if (s >= PL_bufend) { |
eb160463 | 6645 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6646 | missingterm(PL_tokenbuf); |
79072805 LW |
6647 | } |
6648 | sv_setpvn(tmpstr,d+1,s-d); | |
6649 | s += len - 1; | |
57843af0 | 6650 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6651 | |
3280af22 NIS |
6652 | sv_catpvn(herewas,s,PL_bufend-s); |
6653 | sv_setsv(PL_linestr,herewas); | |
6654 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6655 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6656 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6657 | } |
6658 | else | |
6659 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6660 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6661 | if (!outer || |
3280af22 | 6662 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
eb160463 | 6663 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6664 | missingterm(PL_tokenbuf); |
79072805 | 6665 | } |
57843af0 | 6666 | CopLINE_inc(PL_curcop); |
3280af22 | 6667 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6668 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6669 | #ifndef PERL_STRICT_CR |
3280af22 | 6670 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6671 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6672 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6673 | { |
3280af22 NIS |
6674 | PL_bufend[-2] = '\n'; |
6675 | PL_bufend--; | |
6676 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6677 | } |
3280af22 NIS |
6678 | else if (PL_bufend[-1] == '\r') |
6679 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6680 | } |
3280af22 NIS |
6681 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6682 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6683 | #endif |
3280af22 | 6684 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6685 | SV *sv = NEWSV(88,0); |
6686 | ||
93a17b20 | 6687 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6688 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6689 | (void)SvIOK_on(sv); |
6690 | SvIVX(sv) = 0; | |
57843af0 | 6691 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6692 | } |
3280af22 NIS |
6693 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6694 | s = PL_bufend - 1; | |
79072805 | 6695 | *s = ' '; |
3280af22 NIS |
6696 | sv_catsv(PL_linestr,herewas); |
6697 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6698 | } |
6699 | else { | |
3280af22 NIS |
6700 | s = PL_bufend; |
6701 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6702 | } |
6703 | } | |
79072805 | 6704 | s++; |
0244c3a4 | 6705 | retval: |
57843af0 | 6706 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6707 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6708 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6709 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6710 | } |
8990e307 | 6711 | SvREFCNT_dec(herewas); |
2f31ce75 JH |
6712 | if (!IN_BYTES) { |
6713 | if (UTF && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) | |
6714 | SvUTF8_on(tmpstr); | |
6715 | else if (PL_encoding) | |
6716 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
6717 | } | |
3280af22 | 6718 | PL_lex_stuff = tmpstr; |
79072805 LW |
6719 | yylval.ival = op_type; |
6720 | return s; | |
6721 | } | |
6722 | ||
02aa26ce NT |
6723 | /* scan_inputsymbol |
6724 | takes: current position in input buffer | |
6725 | returns: new position in input buffer | |
6726 | side-effects: yylval and lex_op are set. | |
6727 | ||
6728 | This code handles: | |
6729 | ||
6730 | <> read from ARGV | |
6731 | <FH> read from filehandle | |
6732 | <pkg::FH> read from package qualified filehandle | |
6733 | <pkg'FH> read from package qualified filehandle | |
6734 | <$fh> read from filehandle in $fh | |
6735 | <*.h> filename glob | |
6736 | ||
6737 | */ | |
6738 | ||
76e3520e | 6739 | STATIC char * |
cea2e8a9 | 6740 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6741 | { |
02aa26ce | 6742 | register char *s = start; /* current position in buffer */ |
79072805 | 6743 | register char *d; |
fc36a67e | 6744 | register char *e; |
1b420867 | 6745 | char *end; |
79072805 LW |
6746 | I32 len; |
6747 | ||
3280af22 NIS |
6748 | d = PL_tokenbuf; /* start of temp holding space */ |
6749 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6750 | end = strchr(s, '\n'); |
6751 | if (!end) | |
6752 | end = PL_bufend; | |
6753 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6754 | |
6755 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6756 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6757 | */ |
6758 | ||
3280af22 | 6759 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6760 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6761 | if (s >= end) |
cea2e8a9 | 6762 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6763 | |
fc36a67e | 6764 | s++; |
02aa26ce NT |
6765 | |
6766 | /* check for <$fh> | |
6767 | Remember, only scalar variables are interpreted as filehandles by | |
6768 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6769 | treated as a glob() call. | |
6770 | This code makes use of the fact that except for the $ at the front, | |
6771 | a scalar variable and a filehandle look the same. | |
6772 | */ | |
4633a7c4 | 6773 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6774 | |
6775 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6776 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6777 | d++; |
02aa26ce NT |
6778 | |
6779 | /* If we've tried to read what we allow filehandles to look like, and | |
6780 | there's still text left, then it must be a glob() and not a getline. | |
6781 | Use scan_str to pull out the stuff between the <> and treat it | |
6782 | as nothing more than a string. | |
6783 | */ | |
6784 | ||
3280af22 | 6785 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6786 | yylval.ival = OP_GLOB; |
6787 | set_csh(); | |
09bef843 | 6788 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6789 | if (!s) |
cea2e8a9 | 6790 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6791 | return s; |
6792 | } | |
395c3793 | 6793 | else { |
9b3023bc RGS |
6794 | bool readline_overriden = FALSE; |
6795 | GV *gv_readline = Nullgv; | |
6796 | GV **gvp; | |
02aa26ce | 6797 | /* we're in a filehandle read situation */ |
3280af22 | 6798 | d = PL_tokenbuf; |
02aa26ce NT |
6799 | |
6800 | /* turn <> into <ARGV> */ | |
79072805 LW |
6801 | if (!len) |
6802 | (void)strcpy(d,"ARGV"); | |
02aa26ce | 6803 | |
9b3023bc | 6804 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6805 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6806 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6807 | || |
ba979b31 | 6808 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6809 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6810 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
6811 | readline_overriden = TRUE; |
6812 | ||
02aa26ce NT |
6813 | /* if <$fh>, create the ops to turn the variable into a |
6814 | filehandle | |
6815 | */ | |
79072805 | 6816 | if (*d == '$') { |
a0d0e21e | 6817 | I32 tmp; |
02aa26ce NT |
6818 | |
6819 | /* try to find it in the pad for this block, otherwise find | |
6820 | add symbol table ops | |
6821 | */ | |
11343788 | 6822 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
dd2155a4 DM |
6823 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
6824 | SV *sym = sv_2mortal( | |
6825 | newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)),0)); | |
f558d5af JH |
6826 | sv_catpvn(sym, "::", 2); |
6827 | sv_catpv(sym, d+1); | |
6828 | d = SvPVX(sym); | |
6829 | goto intro_sym; | |
6830 | } | |
6831 | else { | |
6832 | OP *o = newOP(OP_PADSV, 0); | |
6833 | o->op_targ = tmp; | |
9b3023bc RGS |
6834 | PL_lex_op = readline_overriden |
6835 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6836 | append_elem(OP_LIST, o, | |
6837 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
6838 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 6839 | } |
a0d0e21e LW |
6840 | } |
6841 | else { | |
f558d5af JH |
6842 | GV *gv; |
6843 | ++d; | |
6844 | intro_sym: | |
6845 | gv = gv_fetchpv(d, | |
6846 | (PL_in_eval | |
6847 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 6848 | : GV_ADDMULTI), |
f558d5af | 6849 | SVt_PV); |
9b3023bc RGS |
6850 | PL_lex_op = readline_overriden |
6851 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6852 | append_elem(OP_LIST, | |
6853 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
6854 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6855 | : (OP*)newUNOP(OP_READLINE, 0, | |
6856 | newUNOP(OP_RV2SV, 0, | |
6857 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 6858 | } |
7c6fadd6 RGS |
6859 | if (!readline_overriden) |
6860 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
f5284f61 | 6861 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ |
79072805 LW |
6862 | yylval.ival = OP_NULL; |
6863 | } | |
02aa26ce NT |
6864 | |
6865 | /* If it's none of the above, it must be a literal filehandle | |
6866 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6867 | else { |
85e6fe83 | 6868 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
6869 | PL_lex_op = readline_overriden |
6870 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6871 | append_elem(OP_LIST, | |
6872 | newGVOP(OP_GV, 0, gv), | |
6873 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6874 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
6875 | yylval.ival = OP_NULL; |
6876 | } | |
6877 | } | |
02aa26ce | 6878 | |
79072805 LW |
6879 | return s; |
6880 | } | |
6881 | ||
02aa26ce NT |
6882 | |
6883 | /* scan_str | |
6884 | takes: start position in buffer | |
09bef843 SB |
6885 | keep_quoted preserve \ on the embedded delimiter(s) |
6886 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6887 | returns: position to continue reading from buffer |
6888 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6889 | updates the read buffer. | |
6890 | ||
6891 | This subroutine pulls a string out of the input. It is called for: | |
6892 | q single quotes q(literal text) | |
6893 | ' single quotes 'literal text' | |
6894 | qq double quotes qq(interpolate $here please) | |
6895 | " double quotes "interpolate $here please" | |
6896 | qx backticks qx(/bin/ls -l) | |
6897 | ` backticks `/bin/ls -l` | |
6898 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6899 | m// regexp match m/this/ | |
6900 | s/// regexp substitute s/this/that/ | |
6901 | tr/// string transliterate tr/this/that/ | |
6902 | y/// string transliterate y/this/that/ | |
6903 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6904 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6905 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6906 | ||
6907 | In most of these cases (all but <>, patterns and transliterate) | |
6908 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6909 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6910 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6911 | calls scan_str(). | |
4e553d73 | 6912 | |
02aa26ce NT |
6913 | It skips whitespace before the string starts, and treats the first |
6914 | character as the delimiter. If the delimiter is one of ([{< then | |
6915 | the corresponding "close" character )]}> is used as the closing | |
6916 | delimiter. It allows quoting of delimiters, and if the string has | |
6917 | balanced delimiters ([{<>}]) it allows nesting. | |
6918 | ||
37fd879b HS |
6919 | On success, the SV with the resulting string is put into lex_stuff or, |
6920 | if that is already non-NULL, into lex_repl. The second case occurs only | |
6921 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
6922 | For convenience, the terminating delimiter character is stuffed into | |
6923 | SvIVX of the SV. | |
02aa26ce NT |
6924 | */ |
6925 | ||
76e3520e | 6926 | STATIC char * |
09bef843 | 6927 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6928 | { |
02aa26ce NT |
6929 | SV *sv; /* scalar value: string */ |
6930 | char *tmps; /* temp string, used for delimiter matching */ | |
6931 | register char *s = start; /* current position in the buffer */ | |
6932 | register char term; /* terminating character */ | |
6933 | register char *to; /* current position in the sv's data */ | |
6934 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 6935 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e IH |
6936 | I32 termcode; /* terminating char. code */ |
6937 | U8 termstr[UTF8_MAXLEN]; /* terminating string */ | |
6938 | STRLEN termlen; /* length of terminating string */ | |
6939 | char *last = NULL; /* last position for nesting bracket */ | |
02aa26ce NT |
6940 | |
6941 | /* skip space before the delimiter */ | |
fb73857a | 6942 | if (isSPACE(*s)) |
6943 | s = skipspace(s); | |
02aa26ce NT |
6944 | |
6945 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6946 | CLINE; |
02aa26ce NT |
6947 | |
6948 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6949 | term = *s; |
220e2d4e IH |
6950 | if (!UTF) { |
6951 | termcode = termstr[0] = term; | |
6952 | termlen = 1; | |
6953 | } | |
6954 | else { | |
f3b9ce0f | 6955 | termcode = utf8_to_uvchr((U8*)s, &termlen); |
220e2d4e IH |
6956 | Copy(s, termstr, termlen, U8); |
6957 | if (!UTF8_IS_INVARIANT(term)) | |
6958 | has_utf8 = TRUE; | |
6959 | } | |
b1c7b182 | 6960 | |
02aa26ce | 6961 | /* mark where we are */ |
57843af0 | 6962 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6963 | PL_multi_open = term; |
02aa26ce NT |
6964 | |
6965 | /* find corresponding closing delimiter */ | |
93a17b20 | 6966 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
6967 | termcode = termstr[0] = term = tmps[5]; |
6968 | ||
3280af22 | 6969 | PL_multi_close = term; |
79072805 | 6970 | |
02aa26ce | 6971 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6972 | assuming. 79 is the SV's initial length. What a random number. */ |
6973 | sv = NEWSV(87,79); | |
ed6116ce | 6974 | sv_upgrade(sv, SVt_PVIV); |
220e2d4e | 6975 | SvIVX(sv) = termcode; |
a0d0e21e | 6976 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6977 | |
6978 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 6979 | if (keep_delims) |
220e2d4e IH |
6980 | sv_catpvn(sv, s, termlen); |
6981 | s += termlen; | |
93a17b20 | 6982 | for (;;) { |
220e2d4e IH |
6983 | if (PL_encoding && !UTF) { |
6984 | bool cont = TRUE; | |
6985 | ||
6986 | while (cont) { | |
6987 | int offset = s - SvPVX(PL_linestr); | |
6988 | bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, | |
f3b9ce0f | 6989 | &offset, (char*)termstr, termlen); |
220e2d4e IH |
6990 | char *ns = SvPVX(PL_linestr) + offset; |
6991 | char *svlast = SvEND(sv) - 1; | |
6992 | ||
6993 | for (; s < ns; s++) { | |
6994 | if (*s == '\n' && !PL_rsfp) | |
6995 | CopLINE_inc(PL_curcop); | |
6996 | } | |
6997 | if (!found) | |
6998 | goto read_more_line; | |
6999 | else { | |
7000 | /* handle quoted delimiters */ | |
7001 | if (*(svlast-1) == '\\') { | |
7002 | char *t; | |
7003 | for (t = svlast-2; t >= SvPVX(sv) && *t == '\\';) | |
7004 | t--; | |
7005 | if ((svlast-1 - t) % 2) { | |
7006 | if (!keep_quoted) { | |
7007 | *(svlast-1) = term; | |
7008 | *svlast = '\0'; | |
7009 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7010 | } | |
7011 | continue; | |
7012 | } | |
7013 | } | |
7014 | if (PL_multi_open == PL_multi_close) { | |
7015 | cont = FALSE; | |
7016 | } | |
7017 | else { | |
7018 | char *t, *w; | |
7019 | if (!last) | |
7020 | last = SvPVX(sv); | |
7021 | for (w = t = last; t < svlast; w++, t++) { | |
7022 | /* At here, all closes are "was quoted" one, | |
7023 | so we don't check PL_multi_close. */ | |
7024 | if (*t == '\\') { | |
7025 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
7026 | t++; | |
7027 | else | |
7028 | *w++ = *t++; | |
7029 | } | |
7030 | else if (*t == PL_multi_open) | |
7031 | brackets++; | |
7032 | ||
7033 | *w = *t; | |
7034 | } | |
7035 | if (w < t) { | |
7036 | *w++ = term; | |
7037 | *w = '\0'; | |
7038 | SvCUR_set(sv, w - SvPVX(sv)); | |
7039 | } | |
7040 | last = w; | |
7041 | if (--brackets <= 0) | |
7042 | cont = FALSE; | |
7043 | } | |
7044 | } | |
7045 | } | |
7046 | if (!keep_delims) { | |
7047 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7048 | *SvEND(sv) = '\0'; | |
7049 | } | |
7050 | break; | |
7051 | } | |
7052 | ||
02aa26ce | 7053 | /* extend sv if need be */ |
3280af22 | 7054 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 7055 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 7056 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 7057 | |
02aa26ce | 7058 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
7059 | if (PL_multi_open == PL_multi_close) { |
7060 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 7061 | /* embedded newlines increment the current line number */ |
3280af22 | 7062 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7063 | CopLINE_inc(PL_curcop); |
02aa26ce | 7064 | /* handle quoted delimiters */ |
3280af22 | 7065 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 7066 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 7067 | s++; |
02aa26ce | 7068 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
7069 | else |
7070 | *to++ = *s++; | |
7071 | } | |
02aa26ce NT |
7072 | /* terminate when run out of buffer (the for() condition), or |
7073 | have found the terminator */ | |
220e2d4e IH |
7074 | else if (*s == term) { |
7075 | if (termlen == 1) | |
7076 | break; | |
f3b9ce0f | 7077 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
7078 | break; |
7079 | } | |
63cd0674 | 7080 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7081 | has_utf8 = TRUE; |
93a17b20 LW |
7082 | *to = *s; |
7083 | } | |
7084 | } | |
02aa26ce NT |
7085 | |
7086 | /* if the terminator isn't the same as the start character (e.g., | |
7087 | matched brackets), we have to allow more in the quoting, and | |
7088 | be prepared for nested brackets. | |
7089 | */ | |
93a17b20 | 7090 | else { |
02aa26ce | 7091 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 7092 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 7093 | /* embedded newlines increment the line count */ |
3280af22 | 7094 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7095 | CopLINE_inc(PL_curcop); |
02aa26ce | 7096 | /* backslashes can escape the open or closing characters */ |
3280af22 | 7097 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
7098 | if (!keep_quoted && |
7099 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
7100 | s++; |
7101 | else | |
7102 | *to++ = *s++; | |
7103 | } | |
02aa26ce | 7104 | /* allow nested opens and closes */ |
3280af22 | 7105 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 7106 | break; |
3280af22 | 7107 | else if (*s == PL_multi_open) |
93a17b20 | 7108 | brackets++; |
63cd0674 | 7109 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7110 | has_utf8 = TRUE; |
93a17b20 LW |
7111 | *to = *s; |
7112 | } | |
7113 | } | |
02aa26ce | 7114 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 7115 | *to = '\0'; |
463ee0b2 | 7116 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 7117 | |
02aa26ce NT |
7118 | /* |
7119 | * this next chunk reads more into the buffer if we're not done yet | |
7120 | */ | |
7121 | ||
b1c7b182 GS |
7122 | if (s < PL_bufend) |
7123 | break; /* handle case where we are done yet :-) */ | |
79072805 | 7124 | |
6a27c188 | 7125 | #ifndef PERL_STRICT_CR |
f63a84b2 | 7126 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
7127 | if ((to[-2] == '\r' && to[-1] == '\n') || |
7128 | (to[-2] == '\n' && to[-1] == '\r')) | |
7129 | { | |
f63a84b2 LW |
7130 | to[-2] = '\n'; |
7131 | to--; | |
7132 | SvCUR_set(sv, to - SvPVX(sv)); | |
7133 | } | |
7134 | else if (to[-1] == '\r') | |
7135 | to[-1] = '\n'; | |
7136 | } | |
7137 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
7138 | to[-1] = '\n'; | |
7139 | #endif | |
7140 | ||
220e2d4e | 7141 | read_more_line: |
02aa26ce NT |
7142 | /* if we're out of file, or a read fails, bail and reset the current |
7143 | line marker so we can report where the unterminated string began | |
7144 | */ | |
3280af22 NIS |
7145 | if (!PL_rsfp || |
7146 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 7147 | sv_free(sv); |
eb160463 | 7148 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
79072805 LW |
7149 | return Nullch; |
7150 | } | |
02aa26ce | 7151 | /* we read a line, so increment our line counter */ |
57843af0 | 7152 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 7153 | |
02aa26ce | 7154 | /* update debugger info */ |
3280af22 | 7155 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
7156 | SV *sv = NEWSV(88,0); |
7157 | ||
93a17b20 | 7158 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 7159 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
7160 | (void)SvIOK_on(sv); |
7161 | SvIVX(sv) = 0; | |
57843af0 | 7162 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 7163 | } |
a0ed51b3 | 7164 | |
3280af22 NIS |
7165 | /* having changed the buffer, we must update PL_bufend */ |
7166 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 7167 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 7168 | } |
4e553d73 | 7169 | |
02aa26ce NT |
7170 | /* at this point, we have successfully read the delimited string */ |
7171 | ||
220e2d4e IH |
7172 | if (!PL_encoding || UTF) { |
7173 | if (keep_delims) | |
7174 | sv_catpvn(sv, s, termlen); | |
7175 | s += termlen; | |
7176 | } | |
7177 | if (has_utf8 || PL_encoding) | |
b1c7b182 | 7178 | SvUTF8_on(sv); |
d0063567 | 7179 | |
57843af0 | 7180 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
7181 | |
7182 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
7183 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
7184 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 7185 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 7186 | } |
02aa26ce NT |
7187 | |
7188 | /* decide whether this is the first or second quoted string we've read | |
7189 | for this op | |
7190 | */ | |
4e553d73 | 7191 | |
3280af22 NIS |
7192 | if (PL_lex_stuff) |
7193 | PL_lex_repl = sv; | |
79072805 | 7194 | else |
3280af22 | 7195 | PL_lex_stuff = sv; |
378cc40b LW |
7196 | return s; |
7197 | } | |
7198 | ||
02aa26ce NT |
7199 | /* |
7200 | scan_num | |
7201 | takes: pointer to position in buffer | |
7202 | returns: pointer to new position in buffer | |
7203 | side-effects: builds ops for the constant in yylval.op | |
7204 | ||
7205 | Read a number in any of the formats that Perl accepts: | |
7206 | ||
7fd134d9 JH |
7207 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
7208 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
7209 | 0b[01](_?[01])* |
7210 | 0[0-7](_?[0-7])* | |
7211 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7212 | |
3280af22 | 7213 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7214 | thing it reads. |
7215 | ||
7216 | If it reads a number without a decimal point or an exponent, it will | |
7217 | try converting the number to an integer and see if it can do so | |
7218 | without loss of precision. | |
7219 | */ | |
4e553d73 | 7220 | |
378cc40b | 7221 | char * |
b73d6f50 | 7222 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7223 | { |
02aa26ce NT |
7224 | register char *s = start; /* current position in buffer */ |
7225 | register char *d; /* destination in temp buffer */ | |
7226 | register char *e; /* end of temp buffer */ | |
86554af2 | 7227 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7228 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7229 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7230 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7231 | static char number_too_long[] = "Number too long"; |
378cc40b | 7232 | |
02aa26ce NT |
7233 | /* We use the first character to decide what type of number this is */ |
7234 | ||
378cc40b | 7235 | switch (*s) { |
79072805 | 7236 | default: |
cea2e8a9 | 7237 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7238 | |
02aa26ce | 7239 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7240 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7241 | case '0': |
7242 | { | |
02aa26ce NT |
7243 | /* variables: |
7244 | u holds the "number so far" | |
4f19785b WSI |
7245 | shift the power of 2 of the base |
7246 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7247 | overflowed was the number more than we can hold? |
7248 | ||
7249 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7250 | we in octal/hex/binary?" indicator to disallow hex characters |
7251 | when in octal mode. | |
02aa26ce | 7252 | */ |
9e24b6e2 JH |
7253 | NV n = 0.0; |
7254 | UV u = 0; | |
79072805 | 7255 | I32 shift; |
9e24b6e2 JH |
7256 | bool overflowed = FALSE; |
7257 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
7258 | static char* bases[5] = { "", "binary", "", "octal", | |
7259 | "hexadecimal" }; | |
7260 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7261 | "Hexadecimal" }; | |
7262 | static char *maxima[5] = { "", | |
7263 | "0b11111111111111111111111111111111", | |
7264 | "", | |
893fe2c2 | 7265 | "037777777777", |
9e24b6e2 JH |
7266 | "0xffffffff" }; |
7267 | char *base, *Base, *max; | |
378cc40b | 7268 | |
02aa26ce | 7269 | /* check for hex */ |
378cc40b LW |
7270 | if (s[1] == 'x') { |
7271 | shift = 4; | |
7272 | s += 2; | |
4f19785b WSI |
7273 | } else if (s[1] == 'b') { |
7274 | shift = 1; | |
7275 | s += 2; | |
378cc40b | 7276 | } |
02aa26ce | 7277 | /* check for a decimal in disguise */ |
b78218b7 | 7278 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7279 | goto decimal; |
02aa26ce | 7280 | /* so it must be octal */ |
928753ea | 7281 | else { |
378cc40b | 7282 | shift = 3; |
928753ea JH |
7283 | s++; |
7284 | } | |
7285 | ||
7286 | if (*s == '_') { | |
7287 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7288 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7289 | "Misplaced _ in number"); |
7290 | lastub = s++; | |
7291 | } | |
9e24b6e2 JH |
7292 | |
7293 | base = bases[shift]; | |
7294 | Base = Bases[shift]; | |
7295 | max = maxima[shift]; | |
02aa26ce | 7296 | |
4f19785b | 7297 | /* read the rest of the number */ |
378cc40b | 7298 | for (;;) { |
9e24b6e2 | 7299 | /* x is used in the overflow test, |
893fe2c2 | 7300 | b is the digit we're adding on. */ |
9e24b6e2 | 7301 | UV x, b; |
55497cff | 7302 | |
378cc40b | 7303 | switch (*s) { |
02aa26ce NT |
7304 | |
7305 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7306 | default: |
7307 | goto out; | |
02aa26ce | 7308 | |
928753ea | 7309 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7310 | case '_': |
928753ea | 7311 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7312 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7313 | "Misplaced _ in number"); |
7314 | lastub = s++; | |
de3bb511 | 7315 | break; |
02aa26ce NT |
7316 | |
7317 | /* 8 and 9 are not octal */ | |
378cc40b | 7318 | case '8': case '9': |
4f19785b | 7319 | if (shift == 3) |
cea2e8a9 | 7320 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7321 | /* FALL THROUGH */ |
02aa26ce NT |
7322 | |
7323 | /* octal digits */ | |
4f19785b | 7324 | case '2': case '3': case '4': |
378cc40b | 7325 | case '5': case '6': case '7': |
4f19785b | 7326 | if (shift == 1) |
cea2e8a9 | 7327 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7328 | /* FALL THROUGH */ |
7329 | ||
7330 | case '0': case '1': | |
02aa26ce | 7331 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7332 | goto digit; |
02aa26ce NT |
7333 | |
7334 | /* hex digits */ | |
378cc40b LW |
7335 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7336 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7337 | /* make sure they said 0x */ |
378cc40b LW |
7338 | if (shift != 4) |
7339 | goto out; | |
55497cff | 7340 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7341 | |
7342 | /* Prepare to put the digit we have onto the end | |
7343 | of the number so far. We check for overflows. | |
7344 | */ | |
7345 | ||
55497cff | 7346 | digit: |
9e24b6e2 JH |
7347 | if (!overflowed) { |
7348 | x = u << shift; /* make room for the digit */ | |
7349 | ||
7350 | if ((x >> shift) != u | |
7351 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7352 | overflowed = TRUE; |
7353 | n = (NV) u; | |
767a6a26 | 7354 | if (ckWARN_d(WARN_OVERFLOW)) |
9014280d | 7355 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), |
9e24b6e2 JH |
7356 | "Integer overflow in %s number", |
7357 | base); | |
7358 | } else | |
7359 | u = x | b; /* add the digit to the end */ | |
7360 | } | |
7361 | if (overflowed) { | |
7362 | n *= nvshift[shift]; | |
7363 | /* If an NV has not enough bits in its | |
7364 | * mantissa to represent an UV this summing of | |
7365 | * small low-order numbers is a waste of time | |
7366 | * (because the NV cannot preserve the | |
7367 | * low-order bits anyway): we could just | |
7368 | * remember when did we overflow and in the | |
7369 | * end just multiply n by the right | |
7370 | * amount. */ | |
7371 | n += (NV) b; | |
55497cff | 7372 | } |
378cc40b LW |
7373 | break; |
7374 | } | |
7375 | } | |
02aa26ce NT |
7376 | |
7377 | /* if we get here, we had success: make a scalar value from | |
7378 | the number. | |
7379 | */ | |
378cc40b | 7380 | out: |
928753ea JH |
7381 | |
7382 | /* final misplaced underbar check */ | |
7383 | if (s[-1] == '_') { | |
7384 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7385 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
7386 | } |
7387 | ||
79072805 | 7388 | sv = NEWSV(92,0); |
9e24b6e2 | 7389 | if (overflowed) { |
767a6a26 | 7390 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
9014280d | 7391 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7392 | "%s number > %s non-portable", |
7393 | Base, max); | |
7394 | sv_setnv(sv, n); | |
7395 | } | |
7396 | else { | |
15041a67 | 7397 | #if UVSIZE > 4 |
767a6a26 | 7398 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
9014280d | 7399 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7400 | "%s number > %s non-portable", |
7401 | Base, max); | |
2cc4c2dc | 7402 | #endif |
9e24b6e2 JH |
7403 | sv_setuv(sv, u); |
7404 | } | |
2cc4c2dc | 7405 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 7406 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7407 | } |
7408 | break; | |
02aa26ce NT |
7409 | |
7410 | /* | |
7411 | handle decimal numbers. | |
7412 | we're also sent here when we read a 0 as the first digit | |
7413 | */ | |
378cc40b LW |
7414 | case '1': case '2': case '3': case '4': case '5': |
7415 | case '6': case '7': case '8': case '9': case '.': | |
7416 | decimal: | |
3280af22 NIS |
7417 | d = PL_tokenbuf; |
7418 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7419 | floatit = FALSE; |
02aa26ce NT |
7420 | |
7421 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7422 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7423 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7424 | if -w is on |
7425 | */ | |
93a17b20 | 7426 | if (*s == '_') { |
928753ea | 7427 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7428 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7429 | "Misplaced _ in number"); |
7430 | lastub = s++; | |
93a17b20 | 7431 | } |
fc36a67e | 7432 | else { |
02aa26ce | 7433 | /* check for end of fixed-length buffer */ |
fc36a67e | 7434 | if (d >= e) |
cea2e8a9 | 7435 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7436 | /* if we're ok, copy the character */ |
378cc40b | 7437 | *d++ = *s++; |
fc36a67e | 7438 | } |
378cc40b | 7439 | } |
02aa26ce NT |
7440 | |
7441 | /* final misplaced underbar check */ | |
928753ea | 7442 | if (lastub && s == lastub + 1) { |
d008e5eb | 7443 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 7444 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 7445 | } |
02aa26ce NT |
7446 | |
7447 | /* read a decimal portion if there is one. avoid | |
7448 | 3..5 being interpreted as the number 3. followed | |
7449 | by .5 | |
7450 | */ | |
2f3197b3 | 7451 | if (*s == '.' && s[1] != '.') { |
79072805 | 7452 | floatit = TRUE; |
378cc40b | 7453 | *d++ = *s++; |
02aa26ce | 7454 | |
928753ea JH |
7455 | if (*s == '_') { |
7456 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7457 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7458 | "Misplaced _ in number"); |
7459 | lastub = s; | |
7460 | } | |
7461 | ||
7462 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7463 | */ |
fc36a67e | 7464 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7465 | /* fixed length buffer check */ |
fc36a67e | 7466 | if (d >= e) |
cea2e8a9 | 7467 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7468 | if (*s == '_') { |
7469 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
9014280d | 7470 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7471 | "Misplaced _ in number"); |
7472 | lastub = s; | |
7473 | } | |
7474 | else | |
fc36a67e | 7475 | *d++ = *s; |
378cc40b | 7476 | } |
928753ea JH |
7477 | /* fractional part ending in underbar? */ |
7478 | if (s[-1] == '_') { | |
7479 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7480 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7481 | "Misplaced _ in number"); |
7482 | } | |
dd629d5b GS |
7483 | if (*s == '.' && isDIGIT(s[1])) { |
7484 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7485 | s = start; |
dd629d5b GS |
7486 | goto vstring; |
7487 | } | |
378cc40b | 7488 | } |
02aa26ce NT |
7489 | |
7490 | /* read exponent part, if present */ | |
7fd134d9 | 7491 | if (*s && strchr("eE",*s) && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7492 | floatit = TRUE; |
7493 | s++; | |
02aa26ce NT |
7494 | |
7495 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7496 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7497 | |
7fd134d9 JH |
7498 | /* stray preinitial _ */ |
7499 | if (*s == '_') { | |
7500 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7501 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7502 | "Misplaced _ in number"); |
7503 | lastub = s++; | |
7504 | } | |
7505 | ||
02aa26ce | 7506 | /* allow positive or negative exponent */ |
378cc40b LW |
7507 | if (*s == '+' || *s == '-') |
7508 | *d++ = *s++; | |
02aa26ce | 7509 | |
7fd134d9 JH |
7510 | /* stray initial _ */ |
7511 | if (*s == '_') { | |
7512 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7513 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7514 | "Misplaced _ in number"); |
7515 | lastub = s++; | |
7516 | } | |
7517 | ||
7fd134d9 JH |
7518 | /* read digits of exponent */ |
7519 | while (isDIGIT(*s) || *s == '_') { | |
7520 | if (isDIGIT(*s)) { | |
7521 | if (d >= e) | |
7522 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7523 | *d++ = *s++; |
7fd134d9 JH |
7524 | } |
7525 | else { | |
7526 | if (ckWARN(WARN_SYNTAX) && | |
7527 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7528 | (!isDIGIT(s[1]) && s[1] != '_'))) |
9014280d | 7529 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 | 7530 | "Misplaced _ in number"); |
b3b48e3e | 7531 | lastub = s++; |
7fd134d9 | 7532 | } |
7fd134d9 | 7533 | } |
378cc40b | 7534 | } |
02aa26ce | 7535 | |
02aa26ce NT |
7536 | |
7537 | /* make an sv from the string */ | |
79072805 | 7538 | sv = NEWSV(92,0); |
097ee67d | 7539 | |
0b7fceb9 | 7540 | /* |
58bb9ec3 NC |
7541 | We try to do an integer conversion first if no characters |
7542 | indicating "float" have been found. | |
0b7fceb9 MU |
7543 | */ |
7544 | ||
7545 | if (!floatit) { | |
58bb9ec3 NC |
7546 | UV uv; |
7547 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7548 | ||
7549 | if (flags == IS_NUMBER_IN_UV) { | |
7550 | if (uv <= IV_MAX) | |
86554af2 | 7551 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7552 | else |
c239479b | 7553 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7554 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7555 | if (uv <= (UV) IV_MIN) | |
7556 | sv_setiv(sv, -(IV)uv); | |
7557 | else | |
7558 | floatit = TRUE; | |
7559 | } else | |
7560 | floatit = TRUE; | |
7561 | } | |
0b7fceb9 | 7562 | if (floatit) { |
58bb9ec3 NC |
7563 | /* terminate the string */ |
7564 | *d = '\0'; | |
86554af2 JH |
7565 | nv = Atof(PL_tokenbuf); |
7566 | sv_setnv(sv, nv); | |
7567 | } | |
86554af2 | 7568 | |
b8403495 JH |
7569 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7570 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7571 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7572 | (floatit ? "float" : "integer"), |
7573 | sv, Nullsv, NULL); | |
378cc40b | 7574 | break; |
0b7fceb9 | 7575 | |
e312add1 | 7576 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7577 | case 'v': |
dd629d5b | 7578 | vstring: |
f4758303 | 7579 | sv = NEWSV(92,5); /* preallocate storage space */ |
b0f01acb | 7580 | s = scan_vstring(s,sv); |
a7cb1f99 | 7581 | break; |
79072805 | 7582 | } |
a687059c | 7583 | |
02aa26ce NT |
7584 | /* make the op for the constant and return */ |
7585 | ||
a86a20aa | 7586 | if (sv) |
b73d6f50 | 7587 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7588 | else |
b73d6f50 | 7589 | lvalp->opval = Nullop; |
a687059c | 7590 | |
378cc40b LW |
7591 | return s; |
7592 | } | |
7593 | ||
76e3520e | 7594 | STATIC char * |
cea2e8a9 | 7595 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7596 | { |
79072805 | 7597 | register char *eol; |
378cc40b | 7598 | register char *t; |
79cb57f6 | 7599 | SV *stuff = newSVpvn("",0); |
79072805 | 7600 | bool needargs = FALSE; |
378cc40b | 7601 | |
79072805 | 7602 | while (!needargs) { |
c2e66d9e | 7603 | if (*s == '.' || *s == /*{*/'}') { |
79072805 | 7604 | /*SUPPRESS 530*/ |
51882d45 | 7605 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7606 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7607 | #else |
bf4acbe4 | 7608 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7609 | #endif |
6a65c6a0 | 7610 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7611 | break; |
7612 | } | |
3280af22 | 7613 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7614 | eol = strchr(s,'\n'); |
0f85fab0 | 7615 | if (!eol++) |
3280af22 | 7616 | eol = PL_bufend; |
0f85fab0 LW |
7617 | } |
7618 | else | |
3280af22 | 7619 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7620 | if (*s != '#') { |
a0d0e21e LW |
7621 | for (t = s; t < eol; t++) { |
7622 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7623 | needargs = FALSE; | |
7624 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7625 | } |
a0d0e21e LW |
7626 | if (*t == '@' || *t == '^') |
7627 | needargs = TRUE; | |
378cc40b | 7628 | } |
7121b347 MG |
7629 | if (eol > s) { |
7630 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7631 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7632 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7633 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7634 | end[-2] = '\n'; | |
7635 | end[-1] = '\0'; | |
7636 | SvCUR(stuff)--; | |
7637 | } | |
2dc4c65b | 7638 | #endif |
7121b347 MG |
7639 | } |
7640 | else | |
7641 | break; | |
79072805 LW |
7642 | } |
7643 | s = eol; | |
3280af22 NIS |
7644 | if (PL_rsfp) { |
7645 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7646 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7647 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7648 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7649 | if (!s) { |
3280af22 | 7650 | s = PL_bufptr; |
79072805 | 7651 | yyerror("Format not terminated"); |
378cc40b LW |
7652 | break; |
7653 | } | |
378cc40b | 7654 | } |
463ee0b2 | 7655 | incline(s); |
79072805 | 7656 | } |
a0d0e21e LW |
7657 | enough: |
7658 | if (SvCUR(stuff)) { | |
3280af22 | 7659 | PL_expect = XTERM; |
79072805 | 7660 | if (needargs) { |
3280af22 NIS |
7661 | PL_lex_state = LEX_NORMAL; |
7662 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7663 | force_next(','); |
7664 | } | |
a0d0e21e | 7665 | else |
3280af22 | 7666 | PL_lex_state = LEX_FORMLINE; |
1bd51a4c IH |
7667 | if (!IN_BYTES) { |
7668 | if (UTF && is_utf8_string((U8*)SvPVX(stuff), SvCUR(stuff))) | |
7669 | SvUTF8_on(stuff); | |
7670 | else if (PL_encoding) | |
7671 | sv_recode_to_utf8(stuff, PL_encoding); | |
7672 | } | |
3280af22 | 7673 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 7674 | force_next(THING); |
3280af22 | 7675 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7676 | force_next(LSTOP); |
378cc40b | 7677 | } |
79072805 | 7678 | else { |
8990e307 | 7679 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7680 | PL_lex_formbrack = 0; |
7681 | PL_bufptr = s; | |
79072805 LW |
7682 | } |
7683 | return s; | |
378cc40b | 7684 | } |
a687059c | 7685 | |
76e3520e | 7686 | STATIC void |
cea2e8a9 | 7687 | S_set_csh(pTHX) |
a687059c | 7688 | { |
ae986130 | 7689 | #ifdef CSH |
3280af22 NIS |
7690 | if (!PL_cshlen) |
7691 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7692 | #endif |
a687059c | 7693 | } |
463ee0b2 | 7694 | |
ba6d6ac9 | 7695 | I32 |
864dbfa3 | 7696 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7697 | { |
3280af22 NIS |
7698 | I32 oldsavestack_ix = PL_savestack_ix; |
7699 | CV* outsidecv = PL_compcv; | |
8990e307 | 7700 | |
3280af22 NIS |
7701 | if (PL_compcv) { |
7702 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7703 | } |
7766f137 | 7704 | SAVEI32(PL_subline); |
3280af22 | 7705 | save_item(PL_subname); |
3280af22 | 7706 | SAVESPTR(PL_compcv); |
3280af22 NIS |
7707 | |
7708 | PL_compcv = (CV*)NEWSV(1104,0); | |
7709 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7710 | CvFLAGS(PL_compcv) |= flags; | |
7711 | ||
57843af0 | 7712 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 7713 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
3280af22 | 7714 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); |
a3985cdc | 7715 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
748a9306 | 7716 | |
8990e307 LW |
7717 | return oldsavestack_ix; |
7718 | } | |
7719 | ||
084592ab CN |
7720 | #ifdef __SC__ |
7721 | #pragma segment Perl_yylex | |
7722 | #endif | |
8990e307 | 7723 | int |
864dbfa3 | 7724 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7725 | { |
faef0170 | 7726 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7727 | yyerror(s); |
faef0170 | 7728 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7729 | return 0; |
8990e307 LW |
7730 | } |
7731 | ||
7732 | int | |
864dbfa3 | 7733 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7734 | { |
68dc0745 | 7735 | char *where = NULL; |
7736 | char *context = NULL; | |
7737 | int contlen = -1; | |
46fc3d4c | 7738 | SV *msg; |
463ee0b2 | 7739 | |
3280af22 | 7740 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7741 | where = "at EOF"; |
3280af22 NIS |
7742 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7743 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7744 | /* |
7745 | Only for NetWare: | |
7746 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7747 | when the script has error such as not having the closing quotes like: | |
7748 | if ($var eq "value) | |
7749 | Checking of white spaces is anyway done in NetWare code. | |
7750 | */ | |
7751 | #ifndef NETWARE | |
3280af22 NIS |
7752 | while (isSPACE(*PL_oldoldbufptr)) |
7753 | PL_oldoldbufptr++; | |
f355267c | 7754 | #endif |
3280af22 NIS |
7755 | context = PL_oldoldbufptr; |
7756 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7757 | } |
3280af22 NIS |
7758 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7759 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7760 | /* |
7761 | Only for NetWare: | |
7762 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7763 | when the script has error such as not having the closing quotes like: | |
7764 | if ($var eq "value) | |
7765 | Checking of white spaces is anyway done in NetWare code. | |
7766 | */ | |
7767 | #ifndef NETWARE | |
3280af22 NIS |
7768 | while (isSPACE(*PL_oldbufptr)) |
7769 | PL_oldbufptr++; | |
f355267c | 7770 | #endif |
3280af22 NIS |
7771 | context = PL_oldbufptr; |
7772 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7773 | } |
7774 | else if (yychar > 255) | |
68dc0745 | 7775 | where = "next token ???"; |
cdfb297e GS |
7776 | #ifdef USE_PURE_BISON |
7777 | /* GNU Bison sets the value -2 */ | |
7778 | else if (yychar == -2) { | |
7779 | #else | |
463ee0b2 | 7780 | else if ((yychar & 127) == 127) { |
cdfb297e | 7781 | #endif |
3280af22 NIS |
7782 | if (PL_lex_state == LEX_NORMAL || |
7783 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7784 | where = "at end of line"; |
3280af22 | 7785 | else if (PL_lex_inpat) |
68dc0745 | 7786 | where = "within pattern"; |
463ee0b2 | 7787 | else |
68dc0745 | 7788 | where = "within string"; |
463ee0b2 | 7789 | } |
46fc3d4c | 7790 | else { |
79cb57f6 | 7791 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7792 | if (yychar < 32) |
cea2e8a9 | 7793 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7794 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7795 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7796 | else |
cea2e8a9 | 7797 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7798 | where = SvPVX(where_sv); |
463ee0b2 | 7799 | } |
46fc3d4c | 7800 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 7801 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 7802 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 7803 | if (context) |
cea2e8a9 | 7804 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7805 | else |
cea2e8a9 | 7806 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7807 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7808 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7809 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7810 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7811 | PL_multi_end = 0; |
a0d0e21e | 7812 | } |
faef0170 | 7813 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7814 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7815 | else |
5a844595 | 7816 | qerror(msg); |
c7d6bfb2 GS |
7817 | if (PL_error_count >= 10) { |
7818 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 7819 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
248c2a4d | 7820 | ERRSV, OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
7821 | else |
7822 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 7823 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 7824 | } |
3280af22 NIS |
7825 | PL_in_my = 0; |
7826 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7827 | return 0; |
7828 | } | |
084592ab CN |
7829 | #ifdef __SC__ |
7830 | #pragma segment Main | |
7831 | #endif | |
4e35701f | 7832 | |
b250498f | 7833 | STATIC char* |
3ae08724 | 7834 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 7835 | { |
b250498f GS |
7836 | STRLEN slen; |
7837 | slen = SvCUR(PL_linestr); | |
7838 | switch (*s) { | |
4e553d73 NIS |
7839 | case 0xFF: |
7840 | if (s[1] == 0xFE) { | |
01ec43d0 | 7841 | /* UTF-16 little-endian */ |
3ae08724 | 7842 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
01ec43d0 GS |
7843 | Perl_croak(aTHX_ "Unsupported script encoding"); |
7844 | #ifndef PERL_NO_UTF16_FILTER | |
dea0fc0b | 7845 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-LE script encoding\n")); |
3ae08724 | 7846 | s += 2; |
dea0fc0b JH |
7847 | if (PL_bufend > (char*)s) { |
7848 | U8 *news; | |
7849 | I32 newlen; | |
7850 | ||
7851 | filter_add(utf16rev_textfilter, NULL); | |
7852 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
f72f5f89 JH |
7853 | PL_bufend = (char*)utf16_to_utf8_reversed(s, news, |
7854 | PL_bufend - (char*)s - 1, | |
dea0fc0b JH |
7855 | &newlen); |
7856 | Copy(news, s, newlen, U8); | |
7857 | SvCUR_set(PL_linestr, newlen); | |
7858 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7859 | news[newlen++] = '\0'; | |
7860 | Safefree(news); | |
7861 | } | |
b250498f | 7862 | #else |
01ec43d0 | 7863 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7864 | #endif |
01ec43d0 GS |
7865 | } |
7866 | break; | |
78ae23f5 | 7867 | case 0xFE: |
3ae08724 | 7868 | if (s[1] == 0xFF) { /* UTF-16 big-endian */ |
01ec43d0 | 7869 | #ifndef PERL_NO_UTF16_FILTER |
dea0fc0b JH |
7870 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding\n")); |
7871 | s += 2; | |
7872 | if (PL_bufend > (char *)s) { | |
7873 | U8 *news; | |
7874 | I32 newlen; | |
7875 | ||
7876 | filter_add(utf16_textfilter, NULL); | |
7877 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
7878 | PL_bufend = (char*)utf16_to_utf8(s, news, | |
7879 | PL_bufend - (char*)s, | |
7880 | &newlen); | |
7881 | Copy(news, s, newlen, U8); | |
7882 | SvCUR_set(PL_linestr, newlen); | |
7883 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7884 | news[newlen++] = '\0'; | |
7885 | Safefree(news); | |
7886 | } | |
b250498f | 7887 | #else |
01ec43d0 | 7888 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7889 | #endif |
01ec43d0 GS |
7890 | } |
7891 | break; | |
3ae08724 GS |
7892 | case 0xEF: |
7893 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
dea0fc0b | 7894 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-8 script encoding\n")); |
01ec43d0 GS |
7895 | s += 3; /* UTF-8 */ |
7896 | } | |
7897 | break; | |
7898 | case 0: | |
7899 | if (slen > 3 && s[1] == 0 && /* UTF-32 big-endian */ | |
3ae08724 | 7900 | s[2] == 0xFE && s[3] == 0xFF) |
01ec43d0 GS |
7901 | { |
7902 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7903 | } | |
7904 | } | |
b8f84bb2 | 7905 | return (char*)s; |
b250498f | 7906 | } |
4755096e | 7907 | |
4755096e GS |
7908 | /* |
7909 | * restore_rsfp | |
7910 | * Restore a source filter. | |
7911 | */ | |
7912 | ||
7913 | static void | |
acfe0abc | 7914 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
7915 | { |
7916 | PerlIO *fp = (PerlIO*)f; | |
7917 | ||
7918 | if (PL_rsfp == PerlIO_stdin()) | |
7919 | PerlIO_clearerr(PL_rsfp); | |
7920 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7921 | PerlIO_close(PL_rsfp); | |
7922 | PL_rsfp = fp; | |
7923 | } | |
6e3aabd6 GS |
7924 | |
7925 | #ifndef PERL_NO_UTF16_FILTER | |
7926 | static I32 | |
acfe0abc | 7927 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7928 | { |
7929 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7930 | if (count) { | |
7931 | U8* tmps; | |
7932 | U8* tend; | |
dea0fc0b | 7933 | I32 newlen; |
6e3aabd6 | 7934 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
f72f5f89 JH |
7935 | if (!*SvPV_nolen(sv)) |
7936 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7937 | return count; | |
4e553d73 | 7938 | |
dea0fc0b | 7939 | tend = utf16_to_utf8((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7940 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7941 | } | |
7942 | return count; | |
7943 | } | |
7944 | ||
7945 | static I32 | |
acfe0abc | 7946 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7947 | { |
7948 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7949 | if (count) { | |
7950 | U8* tmps; | |
7951 | U8* tend; | |
dea0fc0b | 7952 | I32 newlen; |
f72f5f89 JH |
7953 | if (!*SvPV_nolen(sv)) |
7954 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7955 | return count; | |
7956 | ||
6e3aabd6 | 7957 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
dea0fc0b | 7958 | tend = utf16_to_utf8_reversed((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7959 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7960 | } | |
7961 | return count; | |
7962 | } | |
7963 | #endif | |
9f4817db | 7964 | |
f333445c JP |
7965 | /* |
7966 | Returns a pointer to the next character after the parsed | |
7967 | vstring, as well as updating the passed in sv. | |
7968 | ||
7969 | Function must be called like | |
7970 | ||
7971 | sv = NEWSV(92,5); | |
7972 | s = scan_vstring(s,sv); | |
7973 | ||
7974 | The sv should already be large enough to store the vstring | |
7975 | passed in, for performance reasons. | |
7976 | ||
7977 | */ | |
7978 | ||
7979 | char * | |
7980 | Perl_scan_vstring(pTHX_ char *s, SV *sv) | |
7981 | { | |
7982 | char *pos = s; | |
7983 | char *start = s; | |
7984 | if (*pos == 'v') pos++; /* get past 'v' */ | |
3e884cbf JH |
7985 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
7986 | pos++; | |
f333445c JP |
7987 | if ( *pos != '.') { |
7988 | /* this may not be a v-string if followed by => */ | |
8fc7bb1c SM |
7989 | char *next = pos; |
7990 | while (next < PL_bufend && isSPACE(*next)) | |
7991 | ++next; | |
7992 | if ((PL_bufend - next) >= 2 && *next == '=' && next[1] == '>' ) { | |
f333445c JP |
7993 | /* return string not v-string */ |
7994 | sv_setpvn(sv,(char *)s,pos-s); | |
7995 | return pos; | |
7996 | } | |
7997 | } | |
7998 | ||
7999 | if (!isALPHA(*pos)) { | |
8000 | UV rev; | |
8001 | U8 tmpbuf[UTF8_MAXLEN+1]; | |
8002 | U8 *tmpend; | |
8003 | ||
8004 | if (*s == 'v') s++; /* get past 'v' */ | |
8005 | ||
8006 | sv_setpvn(sv, "", 0); | |
8007 | ||
8008 | for (;;) { | |
8009 | rev = 0; | |
8010 | { | |
8011 | /* this is atoi() that tolerates underscores */ | |
8012 | char *end = pos; | |
8013 | UV mult = 1; | |
8014 | while (--end >= s) { | |
8015 | UV orev; | |
8016 | if (*end == '_') | |
8017 | continue; | |
8018 | orev = rev; | |
8019 | rev += (*end - '0') * mult; | |
8020 | mult *= 10; | |
8021 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
8022 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
8023 | "Integer overflow in decimal number"); | |
8024 | } | |
8025 | } | |
8026 | #ifdef EBCDIC | |
8027 | if (rev > 0x7FFFFFFF) | |
8028 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
8029 | #endif | |
8030 | /* Append native character for the rev point */ | |
8031 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
8032 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
8033 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
8034 | SvUTF8_on(sv); | |
3e884cbf | 8035 | if (pos + 1 < PL_bufend && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
8036 | s = ++pos; |
8037 | else { | |
8038 | s = pos; | |
8039 | break; | |
8040 | } | |
3e884cbf | 8041 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
8042 | pos++; |
8043 | } | |
8044 | SvPOK_on(sv); | |
8045 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
8046 | SvRMAGICAL_on(sv); | |
8047 | } | |
8048 | return s; | |
8049 | } | |
8050 |