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