Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
be3c0a43 | 3 | * Copyright (c) 1991-2002, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
9cbb5ea2 GS |
14 | /* |
15 | * This file is the lexer for Perl. It's closely linked to the | |
4e553d73 | 16 | * parser, perly.y. |
ffb4593c NT |
17 | * |
18 | * The main routine is yylex(), which returns the next token. | |
19 | */ | |
20 | ||
378cc40b | 21 | #include "EXTERN.h" |
864dbfa3 | 22 | #define PERL_IN_TOKE_C |
378cc40b | 23 | #include "perl.h" |
378cc40b | 24 | |
d3b6f988 GS |
25 | #define yychar PL_yychar |
26 | #define yylval PL_yylval | |
27 | ||
fc36a67e | 28 | static char ident_too_long[] = "Identifier too long"; |
4ac733c9 | 29 | static char c_without_g[] = "Use of /c modifier is meaningless without /g"; |
64e578a2 | 30 | static char c_in_subst[] = "Use of /c modifier is meaningless in s///"; |
8903cb82 | 31 | |
acfe0abc | 32 | static void restore_rsfp(pTHX_ void *f); |
6e3aabd6 | 33 | #ifndef PERL_NO_UTF16_FILTER |
acfe0abc GS |
34 | static I32 utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen); |
35 | static I32 utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen); | |
6e3aabd6 | 36 | #endif |
51371543 | 37 | |
9059aa12 LW |
38 | #define XFAKEBRACK 128 |
39 | #define XENUMMASK 127 | |
40 | ||
39e02b42 JH |
41 | #ifdef USE_UTF8_SCRIPTS |
42 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 43 | #else |
746b446a | 44 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8)) |
2b9d42f0 | 45 | #endif |
a0ed51b3 | 46 | |
61f0cdd9 | 47 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
48 | * 1999-02-27 mjd-perl-patch@plover.com */ |
49 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
50 | ||
bf4acbe4 GS |
51 | /* On MacOS, respect nonbreaking spaces */ |
52 | #ifdef MACOS_TRADITIONAL | |
53 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\312'||(c)=='\t') | |
54 | #else | |
55 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') | |
56 | #endif | |
57 | ||
ffb4593c NT |
58 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
59 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
60 | * can get by with a single comparison (if the compiler is smart enough). |
61 | */ | |
62 | ||
fb73857a | 63 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
64 | ||
55497cff | 65 | #define LEX_NORMAL 10 |
66 | #define LEX_INTERPNORMAL 9 | |
67 | #define LEX_INTERPCASEMOD 8 | |
68 | #define LEX_INTERPPUSH 7 | |
69 | #define LEX_INTERPSTART 6 | |
70 | #define LEX_INTERPEND 5 | |
71 | #define LEX_INTERPENDMAYBE 4 | |
72 | #define LEX_INTERPCONCAT 3 | |
73 | #define LEX_INTERPCONST 2 | |
74 | #define LEX_FORMLINE 1 | |
75 | #define LEX_KNOWNEXT 0 | |
79072805 | 76 | |
79072805 LW |
77 | #ifdef ff_next |
78 | #undef ff_next | |
d48672a2 LW |
79 | #endif |
80 | ||
a1a0e61e | 81 | #ifdef USE_PURE_BISON |
dba4d153 JH |
82 | # ifndef YYMAXLEVEL |
83 | # define YYMAXLEVEL 100 | |
84 | # endif | |
20141f0e IRC |
85 | YYSTYPE* yylval_pointer[YYMAXLEVEL]; |
86 | int* yychar_pointer[YYMAXLEVEL]; | |
6f202aea | 87 | int yyactlevel = -1; |
22c35a8c GS |
88 | # undef yylval |
89 | # undef yychar | |
20141f0e IRC |
90 | # define yylval (*yylval_pointer[yyactlevel]) |
91 | # define yychar (*yychar_pointer[yyactlevel]) | |
92 | # define PERL_YYLEX_PARAM yylval_pointer[yyactlevel],yychar_pointer[yyactlevel] | |
4e553d73 | 93 | # undef yylex |
dba4d153 | 94 | # define yylex() Perl_yylex_r(aTHX_ yylval_pointer[yyactlevel],yychar_pointer[yyactlevel]) |
a1a0e61e TD |
95 | #endif |
96 | ||
79072805 | 97 | #include "keywords.h" |
fe14fcc3 | 98 | |
ffb4593c NT |
99 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
100 | ||
ae986130 LW |
101 | #ifdef CLINE |
102 | #undef CLINE | |
103 | #endif | |
57843af0 | 104 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 105 | |
ffb4593c NT |
106 | /* |
107 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 108 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
109 | * |
110 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
111 | * OPERATOR : generic operator | |
112 | * AOPERATOR : assignment operator | |
113 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
114 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
115 | * PREREF : *EXPR where EXPR is not a simple identifier | |
116 | * TERM : expression term | |
117 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
118 | * FTST : file test operator | |
119 | * FUN0 : zero-argument function | |
2d2e263d | 120 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
121 | * BOop : bitwise or or xor |
122 | * BAop : bitwise and | |
123 | * SHop : shift operator | |
124 | * PWop : power operator | |
9cbb5ea2 | 125 | * PMop : pattern-matching operator |
ffb4593c NT |
126 | * Aop : addition-level operator |
127 | * Mop : multiplication-level operator | |
128 | * Eop : equality-testing operator | |
e5edeb50 | 129 | * Rop : relational operator <= != gt |
ffb4593c NT |
130 | * |
131 | * Also see LOP and lop() below. | |
132 | */ | |
133 | ||
075953c3 JH |
134 | /* Note that REPORT() and REPORT2() will be expressions that supply |
135 | * their own trailing comma, not suitable for statements as such. */ | |
998054bd | 136 | #ifdef DEBUGGING /* Serve -DT. */ |
075953c3 JH |
137 | # define REPORT(x,retval) tokereport(x,s,(int)retval), |
138 | # define REPORT2(x,retval) tokereport(x,s, yylval.ival), | |
998054bd | 139 | #else |
075953c3 JH |
140 | # define REPORT(x,retval) |
141 | # define REPORT2(x,retval) | |
998054bd SC |
142 | #endif |
143 | ||
075953c3 JH |
144 | #define TOKEN(retval) return (REPORT2("token",retval) PL_bufptr = s,(int)retval) |
145 | #define OPERATOR(retval) return (REPORT2("operator",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval) | |
146 | #define AOPERATOR(retval) return ao((REPORT2("aop",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval)) | |
147 | #define PREBLOCK(retval) return (REPORT2("preblock",retval) PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
148 | #define PRETERMBLOCK(retval) return (REPORT2("pretermblock",retval) PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
149 | #define PREREF(retval) return (REPORT2("preref",retval) PL_expect = XREF,PL_bufptr = s,(int)retval) | |
150 | #define TERM(retval) return (CLINE, REPORT2("term",retval) PL_expect = XOPERATOR, PL_bufptr = s,(int)retval) | |
151 | #define LOOPX(f) return(yylval.ival=f, REPORT("loopx",f) PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
152 | #define FTST(f) return(yylval.ival=f, REPORT("ftst",f) PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
153 | #define FUN0(f) return(yylval.ival = f, REPORT("fun0",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
154 | #define FUN1(f) return(yylval.ival = f, REPORT("fun1",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
155 | #define BOop(f) return ao((yylval.ival=f, REPORT("bitorop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
156 | #define BAop(f) return ao((yylval.ival=f, REPORT("bitandop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
157 | #define SHop(f) return ao((yylval.ival=f, REPORT("shiftop",f) PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
158 | #define PWop(f) return ao((yylval.ival=f, REPORT("powop",f) PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
159 | #define PMop(f) return(yylval.ival=f, REPORT("matchop",f) PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
160 | #define Aop(f) return ao((yylval.ival=f, REPORT("add",f) PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
161 | #define Mop(f) return ao((yylval.ival=f, REPORT("mul",f) PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
162 | #define Eop(f) return(yylval.ival=f, REPORT("eq",f) PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
163 | #define Rop(f) return(yylval.ival=f, REPORT("rel",f) PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 164 | |
a687059c LW |
165 | /* This bit of chicanery makes a unary function followed by |
166 | * a parenthesis into a function with one argument, highest precedence. | |
167 | */ | |
2f3197b3 | 168 | #define UNI(f) return(yylval.ival = f, \ |
075953c3 | 169 | REPORT("uni",f) \ |
3280af22 NIS |
170 | PL_expect = XTERM, \ |
171 | PL_bufptr = s, \ | |
172 | PL_last_uni = PL_oldbufptr, \ | |
173 | PL_last_lop_op = f, \ | |
a687059c LW |
174 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
175 | ||
79072805 | 176 | #define UNIBRACK(f) return(yylval.ival = f, \ |
075953c3 | 177 | REPORT("uni",f) \ |
3280af22 NIS |
178 | PL_bufptr = s, \ |
179 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
180 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
181 | ||
9f68db38 | 182 | /* grandfather return to old style */ |
3280af22 | 183 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 184 | |
8fa7f367 JH |
185 | #ifdef DEBUGGING |
186 | ||
2d00ba3b | 187 | STATIC void |
61b2116b | 188 | S_tokereport(pTHX_ char *thing, char* s, I32 rv) |
9041c2e3 | 189 | { |
998054bd | 190 | DEBUG_T({ |
9c5ffd7c | 191 | SV* report = newSVpv(thing, 0); |
29b291f7 RB |
192 | Perl_sv_catpvf(aTHX_ report, ":line %d:%"IVdf":", CopLINE(PL_curcop), |
193 | (IV)rv); | |
998054bd SC |
194 | |
195 | if (s - PL_bufptr > 0) | |
196 | sv_catpvn(report, PL_bufptr, s - PL_bufptr); | |
197 | else { | |
198 | if (PL_oldbufptr && *PL_oldbufptr) | |
199 | sv_catpv(report, PL_tokenbuf); | |
200 | } | |
201 | PerlIO_printf(Perl_debug_log, "### %s\n", SvPV_nolen(report)); | |
5f80b19c | 202 | }); |
998054bd SC |
203 | } |
204 | ||
8fa7f367 JH |
205 | #endif |
206 | ||
ffb4593c NT |
207 | /* |
208 | * S_ao | |
209 | * | |
c963b151 BD |
210 | * This subroutine detects &&=, ||=, and //= and turns an ANDAND, OROR or DORDOR |
211 | * into an OP_ANDASSIGN, OP_ORASSIGN, or OP_DORASSIGN | |
ffb4593c NT |
212 | */ |
213 | ||
76e3520e | 214 | STATIC int |
cea2e8a9 | 215 | S_ao(pTHX_ int toketype) |
a0d0e21e | 216 | { |
3280af22 NIS |
217 | if (*PL_bufptr == '=') { |
218 | PL_bufptr++; | |
a0d0e21e LW |
219 | if (toketype == ANDAND) |
220 | yylval.ival = OP_ANDASSIGN; | |
221 | else if (toketype == OROR) | |
222 | yylval.ival = OP_ORASSIGN; | |
c963b151 BD |
223 | else if (toketype == DORDOR) |
224 | yylval.ival = OP_DORASSIGN; | |
a0d0e21e LW |
225 | toketype = ASSIGNOP; |
226 | } | |
227 | return toketype; | |
228 | } | |
229 | ||
ffb4593c NT |
230 | /* |
231 | * S_no_op | |
232 | * When Perl expects an operator and finds something else, no_op | |
233 | * prints the warning. It always prints "<something> found where | |
234 | * operator expected. It prints "Missing semicolon on previous line?" | |
235 | * if the surprise occurs at the start of the line. "do you need to | |
236 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
237 | * where the compiler doesn't know if foo is a method call or a function. | |
238 | * It prints "Missing operator before end of line" if there's nothing | |
239 | * after the missing operator, or "... before <...>" if there is something | |
240 | * after the missing operator. | |
241 | */ | |
242 | ||
76e3520e | 243 | STATIC void |
cea2e8a9 | 244 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 245 | { |
3280af22 NIS |
246 | char *oldbp = PL_bufptr; |
247 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 248 | |
1189a94a GS |
249 | if (!s) |
250 | s = oldbp; | |
07c798fb | 251 | else |
1189a94a | 252 | PL_bufptr = s; |
cea2e8a9 | 253 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 254 | if (is_first) |
cea2e8a9 | 255 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 256 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 257 | char *t; |
7e2040f0 | 258 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 259 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 260 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 261 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 | 262 | } |
07c798fb HS |
263 | else { |
264 | assert(s >= oldbp); | |
cea2e8a9 | 265 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
07c798fb | 266 | } |
3280af22 | 267 | PL_bufptr = oldbp; |
8990e307 LW |
268 | } |
269 | ||
ffb4593c NT |
270 | /* |
271 | * S_missingterm | |
272 | * Complain about missing quote/regexp/heredoc terminator. | |
273 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
274 | * If we're in a delimited string and the delimiter is a control | |
275 | * character, it's reformatted into a two-char sequence like ^C. | |
276 | * This is fatal. | |
277 | */ | |
278 | ||
76e3520e | 279 | STATIC void |
cea2e8a9 | 280 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
281 | { |
282 | char tmpbuf[3]; | |
283 | char q; | |
284 | if (s) { | |
285 | char *nl = strrchr(s,'\n'); | |
d2719217 | 286 | if (nl) |
8990e307 LW |
287 | *nl = '\0'; |
288 | } | |
9d116dd7 JH |
289 | else if ( |
290 | #ifdef EBCDIC | |
291 | iscntrl(PL_multi_close) | |
292 | #else | |
293 | PL_multi_close < 32 || PL_multi_close == 127 | |
294 | #endif | |
295 | ) { | |
8990e307 | 296 | *tmpbuf = '^'; |
3280af22 | 297 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
298 | s = "\\n"; |
299 | tmpbuf[2] = '\0'; | |
300 | s = tmpbuf; | |
301 | } | |
302 | else { | |
eb160463 | 303 | *tmpbuf = (char)PL_multi_close; |
8990e307 LW |
304 | tmpbuf[1] = '\0'; |
305 | s = tmpbuf; | |
306 | } | |
307 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 308 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 309 | } |
79072805 | 310 | |
ffb4593c NT |
311 | /* |
312 | * Perl_deprecate | |
ffb4593c NT |
313 | */ |
314 | ||
79072805 | 315 | void |
864dbfa3 | 316 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 317 | { |
599cee73 | 318 | if (ckWARN(WARN_DEPRECATED)) |
9014280d | 319 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), "Use of %s is deprecated", s); |
a0d0e21e LW |
320 | } |
321 | ||
12bcd1a6 PM |
322 | void |
323 | Perl_deprecate_old(pTHX_ char *s) | |
324 | { | |
325 | /* This function should NOT be called for any new deprecated warnings */ | |
326 | /* Use Perl_deprecate instead */ | |
327 | /* */ | |
328 | /* It is here to maintain backward compatibility with the pre-5.8 */ | |
329 | /* warnings category hierarchy. The "deprecated" category used to */ | |
330 | /* live under the "syntax" category. It is now a top-level category */ | |
331 | /* in its own right. */ | |
332 | ||
333 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) | |
334 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
335 | "Use of %s is deprecated", s); | |
336 | } | |
337 | ||
ffb4593c NT |
338 | /* |
339 | * depcom | |
9cbb5ea2 | 340 | * Deprecate a comma-less variable list. |
ffb4593c NT |
341 | */ |
342 | ||
76e3520e | 343 | STATIC void |
cea2e8a9 | 344 | S_depcom(pTHX) |
a0d0e21e | 345 | { |
12bcd1a6 | 346 | deprecate_old("comma-less variable list"); |
a0d0e21e LW |
347 | } |
348 | ||
ffb4593c | 349 | /* |
9cbb5ea2 GS |
350 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
351 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
352 | */ |
353 | ||
c39cd008 GS |
354 | #ifdef PERL_CR_FILTER |
355 | static void | |
356 | strip_return(SV *sv) | |
357 | { | |
358 | register char *s = SvPVX(sv); | |
359 | register char *e = s + SvCUR(sv); | |
360 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
361 | while (s < e) { | |
362 | if (*s++ == '\r' && *s == '\n') { | |
363 | /* hit a CR-LF, need to copy the rest */ | |
364 | register char *d = s - 1; | |
365 | *d++ = *s++; | |
366 | while (s < e) { | |
367 | if (*s == '\r' && s[1] == '\n') | |
368 | s++; | |
369 | *d++ = *s++; | |
370 | } | |
371 | SvCUR(sv) -= s - d; | |
372 | return; | |
373 | } | |
374 | } | |
375 | } | |
a868473f | 376 | |
76e3520e | 377 | STATIC I32 |
c39cd008 | 378 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 379 | { |
c39cd008 GS |
380 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
381 | if (count > 0 && !maxlen) | |
382 | strip_return(sv); | |
383 | return count; | |
a868473f NIS |
384 | } |
385 | #endif | |
386 | ||
ffb4593c NT |
387 | /* |
388 | * Perl_lex_start | |
9cbb5ea2 GS |
389 | * Initialize variables. Uses the Perl save_stack to save its state (for |
390 | * recursive calls to the parser). | |
ffb4593c NT |
391 | */ |
392 | ||
a0d0e21e | 393 | void |
864dbfa3 | 394 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 395 | { |
8990e307 LW |
396 | char *s; |
397 | STRLEN len; | |
398 | ||
3280af22 NIS |
399 | SAVEI32(PL_lex_dojoin); |
400 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
401 | SAVEI32(PL_lex_casemods); |
402 | SAVEI32(PL_lex_starts); | |
403 | SAVEI32(PL_lex_state); | |
7766f137 | 404 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 405 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
406 | if (PL_lex_state == LEX_KNOWNEXT) { |
407 | I32 toke = PL_nexttoke; | |
408 | while (--toke >= 0) { | |
409 | SAVEI32(PL_nexttype[toke]); | |
410 | SAVEVPTR(PL_nextval[toke]); | |
411 | } | |
412 | SAVEI32(PL_nexttoke); | |
18b09519 | 413 | } |
57843af0 | 414 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
415 | SAVEPPTR(PL_bufptr); |
416 | SAVEPPTR(PL_bufend); | |
417 | SAVEPPTR(PL_oldbufptr); | |
418 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
419 | SAVEPPTR(PL_last_lop); |
420 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
421 | SAVEPPTR(PL_linestart); |
422 | SAVESPTR(PL_linestr); | |
423 | SAVEPPTR(PL_lex_brackstack); | |
424 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 425 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
426 | SAVESPTR(PL_lex_stuff); |
427 | SAVEI32(PL_lex_defer); | |
09bef843 | 428 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 429 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
430 | SAVEINT(PL_expect); |
431 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
432 | |
433 | PL_lex_state = LEX_NORMAL; | |
434 | PL_lex_defer = 0; | |
435 | PL_expect = XSTATE; | |
436 | PL_lex_brackets = 0; | |
3280af22 NIS |
437 | New(899, PL_lex_brackstack, 120, char); |
438 | New(899, PL_lex_casestack, 12, char); | |
439 | SAVEFREEPV(PL_lex_brackstack); | |
440 | SAVEFREEPV(PL_lex_casestack); | |
441 | PL_lex_casemods = 0; | |
442 | *PL_lex_casestack = '\0'; | |
443 | PL_lex_dojoin = 0; | |
444 | PL_lex_starts = 0; | |
445 | PL_lex_stuff = Nullsv; | |
446 | PL_lex_repl = Nullsv; | |
447 | PL_lex_inpat = 0; | |
76be56bc | 448 | PL_nexttoke = 0; |
3280af22 | 449 | PL_lex_inwhat = 0; |
09bef843 | 450 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
451 | PL_linestr = line; |
452 | if (SvREADONLY(PL_linestr)) | |
453 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
454 | s = SvPV(PL_linestr, len); | |
6f27f9a7 | 455 | if (!len || s[len-1] != ';') { |
3280af22 NIS |
456 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
457 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
458 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 459 | } |
3280af22 NIS |
460 | SvTEMP_off(PL_linestr); |
461 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
462 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 463 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 464 | PL_rsfp = 0; |
79072805 | 465 | } |
a687059c | 466 | |
ffb4593c NT |
467 | /* |
468 | * Perl_lex_end | |
9cbb5ea2 GS |
469 | * Finalizer for lexing operations. Must be called when the parser is |
470 | * done with the lexer. | |
ffb4593c NT |
471 | */ |
472 | ||
463ee0b2 | 473 | void |
864dbfa3 | 474 | Perl_lex_end(pTHX) |
463ee0b2 | 475 | { |
3280af22 | 476 | PL_doextract = FALSE; |
463ee0b2 LW |
477 | } |
478 | ||
ffb4593c NT |
479 | /* |
480 | * S_incline | |
481 | * This subroutine has nothing to do with tilting, whether at windmills | |
482 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 483 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 484 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
485 | * # line 500 "foo.pm" |
486 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
487 | */ |
488 | ||
76e3520e | 489 | STATIC void |
cea2e8a9 | 490 | S_incline(pTHX_ char *s) |
463ee0b2 LW |
491 | { |
492 | char *t; | |
493 | char *n; | |
73659bf1 | 494 | char *e; |
463ee0b2 | 495 | char ch; |
463ee0b2 | 496 | |
57843af0 | 497 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
498 | if (*s++ != '#') |
499 | return; | |
bf4acbe4 | 500 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
501 | if (strnEQ(s, "line", 4)) |
502 | s += 4; | |
503 | else | |
504 | return; | |
084592ab | 505 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 506 | s++; |
4e553d73 | 507 | else |
73659bf1 | 508 | return; |
bf4acbe4 | 509 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
510 | if (!isDIGIT(*s)) |
511 | return; | |
512 | n = s; | |
513 | while (isDIGIT(*s)) | |
514 | s++; | |
bf4acbe4 | 515 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 516 | s++; |
73659bf1 | 517 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 518 | s++; |
73659bf1 GS |
519 | e = t + 1; |
520 | } | |
463ee0b2 | 521 | else { |
463ee0b2 | 522 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 523 | e = t; |
463ee0b2 | 524 | } |
bf4acbe4 | 525 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
526 | e++; |
527 | if (*e != '\n' && *e != '\0') | |
528 | return; /* false alarm */ | |
529 | ||
463ee0b2 LW |
530 | ch = *t; |
531 | *t = '\0'; | |
f4dd75d9 | 532 | if (t - s > 0) { |
05ec9bb3 | 533 | CopFILE_free(PL_curcop); |
57843af0 | 534 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 535 | } |
463ee0b2 | 536 | *t = ch; |
57843af0 | 537 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
538 | } |
539 | ||
ffb4593c NT |
540 | /* |
541 | * S_skipspace | |
542 | * Called to gobble the appropriate amount and type of whitespace. | |
543 | * Skips comments as well. | |
544 | */ | |
545 | ||
76e3520e | 546 | STATIC char * |
cea2e8a9 | 547 | S_skipspace(pTHX_ register char *s) |
a687059c | 548 | { |
3280af22 | 549 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 550 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
551 | s++; |
552 | return s; | |
553 | } | |
554 | for (;;) { | |
fd049845 | 555 | STRLEN prevlen; |
09bef843 | 556 | SSize_t oldprevlen, oldoldprevlen; |
9c5ffd7c | 557 | SSize_t oldloplen = 0, oldunilen = 0; |
60e6418e GS |
558 | while (s < PL_bufend && isSPACE(*s)) { |
559 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
560 | incline(s); | |
561 | } | |
ffb4593c NT |
562 | |
563 | /* comment */ | |
3280af22 NIS |
564 | if (s < PL_bufend && *s == '#') { |
565 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 566 | s++; |
60e6418e | 567 | if (s < PL_bufend) { |
463ee0b2 | 568 | s++; |
60e6418e GS |
569 | if (PL_in_eval && !PL_rsfp) { |
570 | incline(s); | |
571 | continue; | |
572 | } | |
573 | } | |
463ee0b2 | 574 | } |
ffb4593c NT |
575 | |
576 | /* only continue to recharge the buffer if we're at the end | |
577 | * of the buffer, we're not reading from a source filter, and | |
578 | * we're in normal lexing mode | |
579 | */ | |
09bef843 SB |
580 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
581 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 582 | return s; |
ffb4593c NT |
583 | |
584 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
585 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
586 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
587 | { | |
588 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
589 | if (PL_minus_n || PL_minus_p) { |
590 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
591 | ";}continue{print or die qq(-p destination: $!\\n)" : |
592 | ""); | |
3280af22 NIS |
593 | sv_catpv(PL_linestr,";}"); |
594 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
595 | } |
596 | else | |
3280af22 | 597 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
598 | |
599 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
600 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
601 | = SvPVX(PL_linestr); | |
3280af22 | 602 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 603 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
604 | |
605 | /* Close the filehandle. Could be from -P preprocessor, | |
606 | * STDIN, or a regular file. If we were reading code from | |
607 | * STDIN (because the commandline held no -e or filename) | |
608 | * then we don't close it, we reset it so the code can | |
609 | * read from STDIN too. | |
610 | */ | |
611 | ||
3280af22 NIS |
612 | if (PL_preprocess && !PL_in_eval) |
613 | (void)PerlProc_pclose(PL_rsfp); | |
614 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
615 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 616 | else |
3280af22 NIS |
617 | (void)PerlIO_close(PL_rsfp); |
618 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
619 | return s; |
620 | } | |
ffb4593c NT |
621 | |
622 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
623 | /* make corresponding updates to old pointers, for yyerror() */ |
624 | oldprevlen = PL_oldbufptr - PL_bufend; | |
625 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
626 | if (PL_last_uni) | |
627 | oldunilen = PL_last_uni - PL_bufend; | |
628 | if (PL_last_lop) | |
629 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
630 | PL_linestart = PL_bufptr = s + prevlen; |
631 | PL_bufend = s + SvCUR(PL_linestr); | |
632 | s = PL_bufptr; | |
09bef843 SB |
633 | PL_oldbufptr = s + oldprevlen; |
634 | PL_oldoldbufptr = s + oldoldprevlen; | |
635 | if (PL_last_uni) | |
636 | PL_last_uni = s + oldunilen; | |
637 | if (PL_last_lop) | |
638 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 639 | incline(s); |
ffb4593c NT |
640 | |
641 | /* debugger active and we're not compiling the debugger code, | |
642 | * so store the line into the debugger's array of lines | |
643 | */ | |
3280af22 | 644 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
645 | SV *sv = NEWSV(85,0); |
646 | ||
647 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 648 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
649 | (void)SvIOK_on(sv); |
650 | SvIVX(sv) = 0; | |
57843af0 | 651 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 652 | } |
463ee0b2 | 653 | } |
a687059c | 654 | } |
378cc40b | 655 | |
ffb4593c NT |
656 | /* |
657 | * S_check_uni | |
658 | * Check the unary operators to ensure there's no ambiguity in how they're | |
659 | * used. An ambiguous piece of code would be: | |
660 | * rand + 5 | |
661 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
662 | * the +5 is its argument. | |
663 | */ | |
664 | ||
76e3520e | 665 | STATIC void |
cea2e8a9 | 666 | S_check_uni(pTHX) |
ba106d47 | 667 | { |
2f3197b3 | 668 | char *s; |
a0d0e21e | 669 | char *t; |
2f3197b3 | 670 | |
3280af22 | 671 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 672 | return; |
3280af22 NIS |
673 | while (isSPACE(*PL_last_uni)) |
674 | PL_last_uni++; | |
7e2040f0 | 675 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 676 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 677 | return; |
0453d815 | 678 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 679 | char ch = *s; |
0453d815 | 680 | *s = '\0'; |
9014280d | 681 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
4e553d73 | 682 | "Warning: Use of \"%s\" without parens is ambiguous", |
0453d815 PM |
683 | PL_last_uni); |
684 | *s = ch; | |
685 | } | |
2f3197b3 LW |
686 | } |
687 | ||
ffb4593c NT |
688 | /* |
689 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
690 | * with a subroutine, S_lop() for which LOP is just another name. | |
691 | */ | |
692 | ||
a0d0e21e LW |
693 | #define LOP(f,x) return lop(f,x,s) |
694 | ||
ffb4593c NT |
695 | /* |
696 | * S_lop | |
697 | * Build a list operator (or something that might be one). The rules: | |
698 | * - if we have a next token, then it's a list operator [why?] | |
699 | * - if the next thing is an opening paren, then it's a function | |
700 | * - else it's a list operator | |
701 | */ | |
702 | ||
76e3520e | 703 | STATIC I32 |
a0be28da | 704 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 705 | { |
79072805 | 706 | yylval.ival = f; |
35c8bce7 | 707 | CLINE; |
075953c3 | 708 | REPORT("lop", f) |
3280af22 NIS |
709 | PL_expect = x; |
710 | PL_bufptr = s; | |
711 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 712 | PL_last_lop_op = (OPCODE)f; |
3280af22 | 713 | if (PL_nexttoke) |
a0d0e21e | 714 | return LSTOP; |
79072805 LW |
715 | if (*s == '(') |
716 | return FUNC; | |
717 | s = skipspace(s); | |
718 | if (*s == '(') | |
719 | return FUNC; | |
720 | else | |
721 | return LSTOP; | |
722 | } | |
723 | ||
ffb4593c NT |
724 | /* |
725 | * S_force_next | |
9cbb5ea2 | 726 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 727 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
728 | * to know what token to return the next time the lexer is called. Caller |
729 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
730 | * handles the token correctly. | |
ffb4593c NT |
731 | */ |
732 | ||
4e553d73 | 733 | STATIC void |
cea2e8a9 | 734 | S_force_next(pTHX_ I32 type) |
79072805 | 735 | { |
3280af22 NIS |
736 | PL_nexttype[PL_nexttoke] = type; |
737 | PL_nexttoke++; | |
738 | if (PL_lex_state != LEX_KNOWNEXT) { | |
739 | PL_lex_defer = PL_lex_state; | |
740 | PL_lex_expect = PL_expect; | |
741 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
742 | } |
743 | } | |
744 | ||
ffb4593c NT |
745 | /* |
746 | * S_force_word | |
747 | * When the lexer knows the next thing is a word (for instance, it has | |
748 | * just seen -> and it knows that the next char is a word char, then | |
749 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
750 | * | |
751 | * Arguments: | |
b1b65b59 | 752 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
753 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
754 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
755 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
756 | * int allow_pack : if true, : characters will also be allowed (require, | |
757 | * use, etc. do this) | |
9cbb5ea2 | 758 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
759 | */ |
760 | ||
76e3520e | 761 | STATIC char * |
cea2e8a9 | 762 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 763 | { |
463ee0b2 LW |
764 | register char *s; |
765 | STRLEN len; | |
4e553d73 | 766 | |
463ee0b2 LW |
767 | start = skipspace(start); |
768 | s = start; | |
7e2040f0 | 769 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 770 | (allow_pack && *s == ':') || |
15f0808c | 771 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 772 | { |
3280af22 NIS |
773 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
774 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
775 | return start; |
776 | if (token == METHOD) { | |
777 | s = skipspace(s); | |
778 | if (*s == '(') | |
3280af22 | 779 | PL_expect = XTERM; |
463ee0b2 | 780 | else { |
3280af22 | 781 | PL_expect = XOPERATOR; |
463ee0b2 | 782 | } |
79072805 | 783 | } |
3280af22 NIS |
784 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
785 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
786 | force_next(token); |
787 | } | |
788 | return s; | |
789 | } | |
790 | ||
ffb4593c NT |
791 | /* |
792 | * S_force_ident | |
9cbb5ea2 | 793 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
794 | * text only contains the "foo" portion. The first argument is a pointer |
795 | * to the "foo", and the second argument is the type symbol to prefix. | |
796 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 797 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
798 | */ |
799 | ||
76e3520e | 800 | STATIC void |
cea2e8a9 | 801 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
802 | { |
803 | if (s && *s) { | |
11343788 | 804 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 805 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 806 | force_next(WORD); |
748a9306 | 807 | if (kind) { |
11343788 | 808 | o->op_private = OPpCONST_ENTERED; |
55497cff | 809 | /* XXX see note in pp_entereval() for why we forgo typo |
810 | warnings if the symbol must be introduced in an eval. | |
811 | GSAR 96-10-12 */ | |
3280af22 | 812 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
813 | kind == '$' ? SVt_PV : |
814 | kind == '@' ? SVt_PVAV : | |
815 | kind == '%' ? SVt_PVHV : | |
816 | SVt_PVGV | |
817 | ); | |
748a9306 | 818 | } |
79072805 LW |
819 | } |
820 | } | |
821 | ||
1571675a GS |
822 | NV |
823 | Perl_str_to_version(pTHX_ SV *sv) | |
824 | { | |
825 | NV retval = 0.0; | |
826 | NV nshift = 1.0; | |
827 | STRLEN len; | |
828 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 829 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
830 | char *end = start + len; |
831 | while (start < end) { | |
ba210ebe | 832 | STRLEN skip; |
1571675a GS |
833 | UV n; |
834 | if (utf) | |
9041c2e3 | 835 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
836 | else { |
837 | n = *(U8*)start; | |
838 | skip = 1; | |
839 | } | |
840 | retval += ((NV)n)/nshift; | |
841 | start += skip; | |
842 | nshift *= 1000; | |
843 | } | |
844 | return retval; | |
845 | } | |
846 | ||
4e553d73 | 847 | /* |
ffb4593c NT |
848 | * S_force_version |
849 | * Forces the next token to be a version number. | |
e759cc13 RGS |
850 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
851 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
852 | * must use an alternative parsing method). | |
ffb4593c NT |
853 | */ |
854 | ||
76e3520e | 855 | STATIC char * |
e759cc13 | 856 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 857 | { |
858 | OP *version = Nullop; | |
44dcb63b | 859 | char *d; |
89bfa8cd | 860 | |
861 | s = skipspace(s); | |
862 | ||
44dcb63b | 863 | d = s; |
dd629d5b | 864 | if (*d == 'v') |
44dcb63b | 865 | d++; |
44dcb63b | 866 | if (isDIGIT(*d)) { |
e759cc13 RGS |
867 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
868 | d++; | |
9f3d182e | 869 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 870 | SV *ver; |
b73d6f50 | 871 | s = scan_num(s, &yylval); |
89bfa8cd | 872 | version = yylval.opval; |
dd629d5b GS |
873 | ver = cSVOPx(version)->op_sv; |
874 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 875 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
876 | SvNVX(ver) = str_to_version(ver); |
877 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 878 | } |
89bfa8cd | 879 | } |
e759cc13 RGS |
880 | else if (guessing) |
881 | return s; | |
89bfa8cd | 882 | } |
883 | ||
884 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 885 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 886 | force_next(WORD); |
89bfa8cd | 887 | |
e759cc13 | 888 | return s; |
89bfa8cd | 889 | } |
890 | ||
ffb4593c NT |
891 | /* |
892 | * S_tokeq | |
893 | * Tokenize a quoted string passed in as an SV. It finds the next | |
894 | * chunk, up to end of string or a backslash. It may make a new | |
895 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
896 | * turns \\ into \. | |
897 | */ | |
898 | ||
76e3520e | 899 | STATIC SV * |
cea2e8a9 | 900 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
901 | { |
902 | register char *s; | |
903 | register char *send; | |
904 | register char *d; | |
b3ac6de7 IZ |
905 | STRLEN len = 0; |
906 | SV *pv = sv; | |
79072805 LW |
907 | |
908 | if (!SvLEN(sv)) | |
b3ac6de7 | 909 | goto finish; |
79072805 | 910 | |
a0d0e21e | 911 | s = SvPV_force(sv, len); |
21a311ee | 912 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 913 | goto finish; |
463ee0b2 | 914 | send = s + len; |
79072805 LW |
915 | while (s < send && *s != '\\') |
916 | s++; | |
917 | if (s == send) | |
b3ac6de7 | 918 | goto finish; |
79072805 | 919 | d = s; |
be4731d2 | 920 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 921 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
922 | if (SvUTF8(sv)) |
923 | SvUTF8_on(pv); | |
924 | } | |
79072805 LW |
925 | while (s < send) { |
926 | if (*s == '\\') { | |
a0d0e21e | 927 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
928 | s++; /* all that, just for this */ |
929 | } | |
930 | *d++ = *s++; | |
931 | } | |
932 | *d = '\0'; | |
463ee0b2 | 933 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 934 | finish: |
3280af22 | 935 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 936 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
937 | return sv; |
938 | } | |
939 | ||
ffb4593c NT |
940 | /* |
941 | * Now come three functions related to double-quote context, | |
942 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
943 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
944 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
945 | * to handle functions and concatenation. | |
946 | * They assume that whoever calls them will be setting up a fake | |
947 | * join call, because each subthing puts a ',' after it. This lets | |
948 | * "lower \luPpEr" | |
949 | * become | |
950 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
951 | * | |
952 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
953 | * arguments and join's arguments are created or not). | |
954 | */ | |
955 | ||
956 | /* | |
957 | * S_sublex_start | |
958 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
959 | * | |
960 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
961 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
962 | * | |
963 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
964 | * | |
965 | * Everything else becomes a FUNC. | |
966 | * | |
967 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
968 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
969 | * call to S_sublex_push(). | |
970 | */ | |
971 | ||
76e3520e | 972 | STATIC I32 |
cea2e8a9 | 973 | S_sublex_start(pTHX) |
79072805 LW |
974 | { |
975 | register I32 op_type = yylval.ival; | |
79072805 LW |
976 | |
977 | if (op_type == OP_NULL) { | |
3280af22 NIS |
978 | yylval.opval = PL_lex_op; |
979 | PL_lex_op = Nullop; | |
79072805 LW |
980 | return THING; |
981 | } | |
982 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 983 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
984 | |
985 | if (SvTYPE(sv) == SVt_PVIV) { | |
986 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
987 | STRLEN len; | |
988 | char *p; | |
989 | SV *nsv; | |
990 | ||
991 | p = SvPV(sv, len); | |
79cb57f6 | 992 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
993 | if (SvUTF8(sv)) |
994 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
995 | SvREFCNT_dec(sv); |
996 | sv = nsv; | |
4e553d73 | 997 | } |
b3ac6de7 | 998 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 999 | PL_lex_stuff = Nullsv; |
79072805 LW |
1000 | return THING; |
1001 | } | |
1002 | ||
3280af22 NIS |
1003 | PL_sublex_info.super_state = PL_lex_state; |
1004 | PL_sublex_info.sub_inwhat = op_type; | |
1005 | PL_sublex_info.sub_op = PL_lex_op; | |
1006 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1007 | |
3280af22 NIS |
1008 | PL_expect = XTERM; |
1009 | if (PL_lex_op) { | |
1010 | yylval.opval = PL_lex_op; | |
1011 | PL_lex_op = Nullop; | |
55497cff | 1012 | return PMFUNC; |
1013 | } | |
1014 | else | |
1015 | return FUNC; | |
1016 | } | |
1017 | ||
ffb4593c NT |
1018 | /* |
1019 | * S_sublex_push | |
1020 | * Create a new scope to save the lexing state. The scope will be | |
1021 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1022 | * to the uc, lc, etc. found before. | |
1023 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1024 | */ | |
1025 | ||
76e3520e | 1026 | STATIC I32 |
cea2e8a9 | 1027 | S_sublex_push(pTHX) |
55497cff | 1028 | { |
f46d017c | 1029 | ENTER; |
55497cff | 1030 | |
3280af22 NIS |
1031 | PL_lex_state = PL_sublex_info.super_state; |
1032 | SAVEI32(PL_lex_dojoin); | |
1033 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1034 | SAVEI32(PL_lex_casemods); |
1035 | SAVEI32(PL_lex_starts); | |
1036 | SAVEI32(PL_lex_state); | |
7766f137 | 1037 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1038 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1039 | SAVECOPLINE(PL_curcop); |
3280af22 | 1040 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1041 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1042 | SAVEPPTR(PL_oldbufptr); |
1043 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1044 | SAVEPPTR(PL_last_lop); |
1045 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1046 | SAVEPPTR(PL_linestart); |
1047 | SAVESPTR(PL_linestr); | |
1048 | SAVEPPTR(PL_lex_brackstack); | |
1049 | SAVEPPTR(PL_lex_casestack); | |
1050 | ||
1051 | PL_linestr = PL_lex_stuff; | |
1052 | PL_lex_stuff = Nullsv; | |
1053 | ||
9cbb5ea2 GS |
1054 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1055 | = SvPVX(PL_linestr); | |
3280af22 | 1056 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1057 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1058 | SAVEFREESV(PL_linestr); |
1059 | ||
1060 | PL_lex_dojoin = FALSE; | |
1061 | PL_lex_brackets = 0; | |
3280af22 NIS |
1062 | New(899, PL_lex_brackstack, 120, char); |
1063 | New(899, PL_lex_casestack, 12, char); | |
1064 | SAVEFREEPV(PL_lex_brackstack); | |
1065 | SAVEFREEPV(PL_lex_casestack); | |
1066 | PL_lex_casemods = 0; | |
1067 | *PL_lex_casestack = '\0'; | |
1068 | PL_lex_starts = 0; | |
1069 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 1070 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 NIS |
1071 | |
1072 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1073 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1074 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1075 | else |
3280af22 | 1076 | PL_lex_inpat = Nullop; |
79072805 | 1077 | |
55497cff | 1078 | return '('; |
79072805 LW |
1079 | } |
1080 | ||
ffb4593c NT |
1081 | /* |
1082 | * S_sublex_done | |
1083 | * Restores lexer state after a S_sublex_push. | |
1084 | */ | |
1085 | ||
76e3520e | 1086 | STATIC I32 |
cea2e8a9 | 1087 | S_sublex_done(pTHX) |
79072805 | 1088 | { |
3280af22 | 1089 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1090 | SV *sv = newSVpvn("",0); |
1091 | if (SvUTF8(PL_linestr)) | |
1092 | SvUTF8_on(sv); | |
3280af22 | 1093 | PL_expect = XOPERATOR; |
9aa983d2 | 1094 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1095 | return THING; |
1096 | } | |
1097 | ||
3280af22 NIS |
1098 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1099 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1100 | return yylex(); |
79072805 LW |
1101 | } |
1102 | ||
ffb4593c | 1103 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1104 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1105 | PL_linestr = PL_lex_repl; | |
1106 | PL_lex_inpat = 0; | |
1107 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1108 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1109 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1110 | SAVEFREESV(PL_linestr); |
1111 | PL_lex_dojoin = FALSE; | |
1112 | PL_lex_brackets = 0; | |
3280af22 NIS |
1113 | PL_lex_casemods = 0; |
1114 | *PL_lex_casestack = '\0'; | |
1115 | PL_lex_starts = 0; | |
25da4f38 | 1116 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1117 | PL_lex_state = LEX_INTERPNORMAL; |
1118 | PL_lex_starts++; | |
e9fa98b2 HS |
1119 | /* we don't clear PL_lex_repl here, so that we can check later |
1120 | whether this is an evalled subst; that means we rely on the | |
1121 | logic to ensure sublex_done() is called again only via the | |
1122 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1123 | } |
e9fa98b2 | 1124 | else { |
3280af22 | 1125 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1126 | PL_lex_repl = Nullsv; |
1127 | } | |
79072805 | 1128 | return ','; |
ffed7fef LW |
1129 | } |
1130 | else { | |
f46d017c | 1131 | LEAVE; |
3280af22 NIS |
1132 | PL_bufend = SvPVX(PL_linestr); |
1133 | PL_bufend += SvCUR(PL_linestr); | |
1134 | PL_expect = XOPERATOR; | |
09bef843 | 1135 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1136 | return ')'; |
ffed7fef LW |
1137 | } |
1138 | } | |
1139 | ||
02aa26ce NT |
1140 | /* |
1141 | scan_const | |
1142 | ||
1143 | Extracts a pattern, double-quoted string, or transliteration. This | |
1144 | is terrifying code. | |
1145 | ||
3280af22 NIS |
1146 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1147 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1148 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1149 | ||
9b599b2a GS |
1150 | Returns a pointer to the character scanned up to. Iff this is |
1151 | advanced from the start pointer supplied (ie if anything was | |
1152 | successfully parsed), will leave an OP for the substring scanned | |
1153 | in yylval. Caller must intuit reason for not parsing further | |
1154 | by looking at the next characters herself. | |
1155 | ||
02aa26ce NT |
1156 | In patterns: |
1157 | backslashes: | |
1158 | double-quoted style: \r and \n | |
1159 | regexp special ones: \D \s | |
1160 | constants: \x3 | |
1161 | backrefs: \1 (deprecated in substitution replacements) | |
1162 | case and quoting: \U \Q \E | |
1163 | stops on @ and $, but not for $ as tail anchor | |
1164 | ||
1165 | In transliterations: | |
1166 | characters are VERY literal, except for - not at the start or end | |
1167 | of the string, which indicates a range. scan_const expands the | |
1168 | range to the full set of intermediate characters. | |
1169 | ||
1170 | In double-quoted strings: | |
1171 | backslashes: | |
1172 | double-quoted style: \r and \n | |
1173 | constants: \x3 | |
1174 | backrefs: \1 (deprecated) | |
1175 | case and quoting: \U \Q \E | |
1176 | stops on @ and $ | |
1177 | ||
1178 | scan_const does *not* construct ops to handle interpolated strings. | |
1179 | It stops processing as soon as it finds an embedded $ or @ variable | |
1180 | and leaves it to the caller to work out what's going on. | |
1181 | ||
da6eedaa | 1182 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @::foo. |
02aa26ce NT |
1183 | |
1184 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1185 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1186 | followed by one of ")| \n\t" | |
1187 | ||
1188 | \1 (backreferences) are turned into $1 | |
1189 | ||
1190 | The structure of the code is | |
1191 | while (there's a character to process) { | |
1192 | handle transliteration ranges | |
1193 | skip regexp comments | |
1194 | skip # initiated comments in //x patterns | |
1195 | check for embedded @foo | |
1196 | check for embedded scalars | |
1197 | if (backslash) { | |
1198 | leave intact backslashes from leave (below) | |
1199 | deprecate \1 in strings and sub replacements | |
1200 | handle string-changing backslashes \l \U \Q \E, etc. | |
1201 | switch (what was escaped) { | |
1202 | handle - in a transliteration (becomes a literal -) | |
1203 | handle \132 octal characters | |
1204 | handle 0x15 hex characters | |
1205 | handle \cV (control V) | |
1206 | handle printf backslashes (\f, \r, \n, etc) | |
1207 | } (end switch) | |
1208 | } (end if backslash) | |
1209 | } (end while character to read) | |
4e553d73 | 1210 | |
02aa26ce NT |
1211 | */ |
1212 | ||
76e3520e | 1213 | STATIC char * |
cea2e8a9 | 1214 | S_scan_const(pTHX_ char *start) |
79072805 | 1215 | { |
3280af22 | 1216 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1217 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1218 | register char *s = start; /* start of the constant */ | |
1219 | register char *d = SvPVX(sv); /* destination for copies */ | |
1220 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1221 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1222 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1223 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1224 | UV uv; |
1225 | ||
dff6d3cd | 1226 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1227 | PL_lex_inpat |
4a2d328f | 1228 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1229 | : ""; |
79072805 | 1230 | |
2b9d42f0 NIS |
1231 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1232 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1233 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1234 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1235 | } | |
1236 | ||
1237 | ||
79072805 | 1238 | while (s < send || dorange) { |
02aa26ce | 1239 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1240 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1241 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1242 | if (dorange) { |
1ba5c669 JH |
1243 | I32 i; /* current expanded character */ |
1244 | I32 min; /* first character in range */ | |
1245 | I32 max; /* last character in range */ | |
02aa26ce | 1246 | |
2b9d42f0 | 1247 | if (has_utf8) { |
8973db79 JH |
1248 | char *c = (char*)utf8_hop((U8*)d, -1); |
1249 | char *e = d++; | |
1250 | while (e-- > c) | |
1251 | *(e + 1) = *e; | |
25716404 | 1252 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1253 | /* mark the range as done, and continue */ |
1254 | dorange = FALSE; | |
1255 | didrange = TRUE; | |
1256 | continue; | |
1257 | } | |
2b9d42f0 | 1258 | |
02aa26ce | 1259 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1260 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1261 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1262 | d -= 2; /* eat the first char and the - */ |
1263 | ||
8ada0baa JH |
1264 | min = (U8)*d; /* first char in range */ |
1265 | max = (U8)d[1]; /* last char in range */ | |
1266 | ||
c2e66d9e | 1267 | if (min > max) { |
01ec43d0 | 1268 | Perl_croak(aTHX_ |
1ba5c669 JH |
1269 | "Invalid [] range \"%c-%c\" in transliteration operator", |
1270 | (char)min, (char)max); | |
c2e66d9e GS |
1271 | } |
1272 | ||
c7f1f016 | 1273 | #ifdef EBCDIC |
8ada0baa JH |
1274 | if ((isLOWER(min) && isLOWER(max)) || |
1275 | (isUPPER(min) && isUPPER(max))) { | |
1276 | if (isLOWER(min)) { | |
1277 | for (i = min; i <= max; i++) | |
1278 | if (isLOWER(i)) | |
db42d148 | 1279 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1280 | } else { |
1281 | for (i = min; i <= max; i++) | |
1282 | if (isUPPER(i)) | |
db42d148 | 1283 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1284 | } |
1285 | } | |
1286 | else | |
1287 | #endif | |
1288 | for (i = min; i <= max; i++) | |
eb160463 | 1289 | *d++ = (char)i; |
02aa26ce NT |
1290 | |
1291 | /* mark the range as done, and continue */ | |
79072805 | 1292 | dorange = FALSE; |
01ec43d0 | 1293 | didrange = TRUE; |
79072805 | 1294 | continue; |
4e553d73 | 1295 | } |
02aa26ce NT |
1296 | |
1297 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1298 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1299 | if (didrange) { |
1fafa243 | 1300 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1301 | } |
2b9d42f0 | 1302 | if (has_utf8) { |
25716404 | 1303 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1304 | s++; |
1305 | continue; | |
1306 | } | |
79072805 LW |
1307 | dorange = TRUE; |
1308 | s++; | |
01ec43d0 GS |
1309 | } |
1310 | else { | |
1311 | didrange = FALSE; | |
1312 | } | |
79072805 | 1313 | } |
02aa26ce NT |
1314 | |
1315 | /* if we get here, we're not doing a transliteration */ | |
1316 | ||
0f5d15d6 IZ |
1317 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1318 | except for the last char, which will be done separately. */ | |
3280af22 | 1319 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1320 | if (s[2] == '#') { |
1321 | while (s < send && *s != ')') | |
db42d148 | 1322 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1323 | } |
1324 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1325 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1326 | { | |
cc6b7395 | 1327 | I32 count = 1; |
0f5d15d6 | 1328 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1329 | char c; |
1330 | ||
d9f97599 GS |
1331 | while (count && (c = *regparse)) { |
1332 | if (c == '\\' && regparse[1]) | |
1333 | regparse++; | |
4e553d73 | 1334 | else if (c == '{') |
cc6b7395 | 1335 | count++; |
4e553d73 | 1336 | else if (c == '}') |
cc6b7395 | 1337 | count--; |
d9f97599 | 1338 | regparse++; |
cc6b7395 | 1339 | } |
5bdf89e7 IZ |
1340 | if (*regparse != ')') { |
1341 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1342 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1343 | } |
0f5d15d6 | 1344 | while (s < regparse) |
db42d148 | 1345 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1346 | } |
748a9306 | 1347 | } |
02aa26ce NT |
1348 | |
1349 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1350 | else if (*s == '#' && PL_lex_inpat && |
1351 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1352 | while (s+1 < send && *s != '\n') |
db42d148 | 1353 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1354 | } |
02aa26ce | 1355 | |
5d1d4326 | 1356 | /* check for embedded arrays |
da6eedaa | 1357 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 1358 | */ |
7e2040f0 | 1359 | else if (*s == '@' && s[1] |
5d1d4326 | 1360 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1361 | break; |
02aa26ce NT |
1362 | |
1363 | /* check for embedded scalars. only stop if we're sure it's a | |
1364 | variable. | |
1365 | */ | |
79072805 | 1366 | else if (*s == '$') { |
3280af22 | 1367 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1368 | break; |
6002328a | 1369 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1370 | break; /* in regexp, $ might be tail anchor */ |
1371 | } | |
02aa26ce | 1372 | |
2b9d42f0 NIS |
1373 | /* End of else if chain - OP_TRANS rejoin rest */ |
1374 | ||
02aa26ce | 1375 | /* backslashes */ |
79072805 LW |
1376 | if (*s == '\\' && s+1 < send) { |
1377 | s++; | |
02aa26ce NT |
1378 | |
1379 | /* some backslashes we leave behind */ | |
c9f97d15 | 1380 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1381 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1382 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1383 | continue; |
1384 | } | |
02aa26ce NT |
1385 | |
1386 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1387 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1388 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1389 | { |
599cee73 | 1390 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 1391 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
1392 | *--s = '$'; |
1393 | break; | |
1394 | } | |
02aa26ce NT |
1395 | |
1396 | /* string-change backslash escapes */ | |
3280af22 | 1397 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1398 | --s; |
1399 | break; | |
1400 | } | |
02aa26ce NT |
1401 | |
1402 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1403 | switch (*s) { |
02aa26ce NT |
1404 | |
1405 | /* quoted - in transliterations */ | |
79072805 | 1406 | case '-': |
3280af22 | 1407 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1408 | *d++ = *s++; |
1409 | continue; | |
1410 | } | |
1411 | /* FALL THROUGH */ | |
1412 | default: | |
11b8faa4 | 1413 | { |
707afd92 MS |
1414 | if (ckWARN(WARN_MISC) && |
1415 | isALNUM(*s) && | |
1416 | *s != '_') | |
9014280d | 1417 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
11b8faa4 JH |
1418 | "Unrecognized escape \\%c passed through", |
1419 | *s); | |
1420 | /* default action is to copy the quoted character */ | |
f9a63242 | 1421 | goto default_action; |
11b8faa4 | 1422 | } |
02aa26ce NT |
1423 | |
1424 | /* \132 indicates an octal constant */ | |
79072805 LW |
1425 | case '0': case '1': case '2': case '3': |
1426 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1427 | { |
53305cf1 NC |
1428 | I32 flags = 0; |
1429 | STRLEN len = 3; | |
1430 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1431 | s += len; |
1432 | } | |
012bcf8d | 1433 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1434 | |
1435 | /* \x24 indicates a hex constant */ | |
79072805 | 1436 | case 'x': |
a0ed51b3 LW |
1437 | ++s; |
1438 | if (*s == '{') { | |
1439 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1440 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1441 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1442 | STRLEN len; |
355860ce | 1443 | |
53305cf1 | 1444 | ++s; |
adaeee49 | 1445 | if (!e) { |
a0ed51b3 | 1446 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1447 | continue; |
ba210ebe | 1448 | } |
53305cf1 NC |
1449 | len = e - s; |
1450 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1451 | s = e + 1; |
a0ed51b3 LW |
1452 | } |
1453 | else { | |
ba210ebe | 1454 | { |
53305cf1 | 1455 | STRLEN len = 2; |
a4c04bdc | 1456 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1457 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1458 | s += len; |
1459 | } | |
012bcf8d GS |
1460 | } |
1461 | ||
1462 | NUM_ESCAPE_INSERT: | |
1463 | /* Insert oct or hex escaped character. | |
301d3d20 | 1464 | * There will always enough room in sv since such |
db42d148 | 1465 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1466 | * they can end up as. */ |
ba7cea30 | 1467 | |
c7f1f016 NIS |
1468 | /* We need to map to chars to ASCII before doing the tests |
1469 | to cover EBCDIC | |
1470 | */ | |
c4d5f83a | 1471 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1472 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1473 | /* Might need to recode whatever we have |
1474 | * accumulated so far if it contains any | |
1475 | * hibit chars. | |
1476 | * | |
1477 | * (Can't we keep track of that and avoid | |
1478 | * this rescan? --jhi) | |
012bcf8d | 1479 | */ |
c7f1f016 | 1480 | int hicount = 0; |
63cd0674 NIS |
1481 | U8 *c; |
1482 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1483 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1484 | hicount++; |
db42d148 | 1485 | } |
012bcf8d | 1486 | } |
63cd0674 | 1487 | if (hicount) { |
db42d148 NIS |
1488 | STRLEN offset = d - SvPVX(sv); |
1489 | U8 *src, *dst; | |
1490 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1491 | src = (U8 *)d - 1; | |
1492 | dst = src+hicount; | |
1493 | d += hicount; | |
1494 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1495 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1496 | U8 ch = NATIVE_TO_ASCII(*src); |
eb160463 GS |
1497 | *dst-- = (U8)UTF8_EIGHT_BIT_LO(ch); |
1498 | *dst-- = (U8)UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1499 | } |
1500 | else { | |
63cd0674 | 1501 | *dst-- = *src; |
012bcf8d | 1502 | } |
c7f1f016 | 1503 | src--; |
012bcf8d GS |
1504 | } |
1505 | } | |
1506 | } | |
1507 | ||
9aa983d2 | 1508 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1509 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1510 | has_utf8 = TRUE; |
f9a63242 JH |
1511 | if (PL_lex_inwhat == OP_TRANS && |
1512 | PL_sublex_info.sub_op) { | |
1513 | PL_sublex_info.sub_op->op_private |= | |
1514 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1515 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1516 | } |
012bcf8d | 1517 | } |
a0ed51b3 | 1518 | else { |
012bcf8d | 1519 | *d++ = (char)uv; |
a0ed51b3 | 1520 | } |
012bcf8d GS |
1521 | } |
1522 | else { | |
c4d5f83a | 1523 | *d++ = (char) uv; |
a0ed51b3 | 1524 | } |
79072805 | 1525 | continue; |
02aa26ce | 1526 | |
b239daa5 | 1527 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1528 | case 'N': |
55eda711 | 1529 | ++s; |
423cee85 JH |
1530 | if (*s == '{') { |
1531 | char* e = strchr(s, '}'); | |
155aba94 | 1532 | SV *res; |
423cee85 JH |
1533 | STRLEN len; |
1534 | char *str; | |
4e553d73 | 1535 | |
423cee85 | 1536 | if (!e) { |
5777a3f7 | 1537 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1538 | e = s - 1; |
1539 | goto cont_scan; | |
1540 | } | |
dbc0d4f2 JH |
1541 | if (e > s + 2 && s[1] == 'U' && s[2] == '+') { |
1542 | /* \N{U+...} */ | |
1543 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | | |
1544 | PERL_SCAN_DISALLOW_PREFIX; | |
1545 | s += 3; | |
1546 | len = e - s; | |
1547 | uv = grok_hex(s, &len, &flags, NULL); | |
1548 | s = e + 1; | |
1549 | goto NUM_ESCAPE_INSERT; | |
1550 | } | |
55eda711 JH |
1551 | res = newSVpvn(s + 1, e - s - 1); |
1552 | res = new_constant( Nullch, 0, "charnames", | |
1553 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1554 | if (has_utf8) |
1555 | sv_utf8_upgrade(res); | |
423cee85 | 1556 | str = SvPV(res,len); |
1c47067b JH |
1557 | #ifdef EBCDIC_NEVER_MIND |
1558 | /* charnames uses pack U and that has been | |
1559 | * recently changed to do the below uni->native | |
1560 | * mapping, so this would be redundant (and wrong, | |
1561 | * the code point would be doubly converted). | |
1562 | * But leave this in just in case the pack U change | |
1563 | * gets revoked, but the semantics is still | |
1564 | * desireable for charnames. --jhi */ | |
cddc7ef4 JH |
1565 | { |
1566 | UV uv = utf8_to_uvchr((U8*)str, 0); | |
1567 | ||
1568 | if (uv < 0x100) { | |
1569 | U8 tmpbuf[UTF8_MAXLEN+1], *d; | |
1570 | ||
1571 | d = uvchr_to_utf8(tmpbuf, UNI_TO_NATIVE(uv)); | |
1572 | sv_setpvn(res, (char *)tmpbuf, d - tmpbuf); | |
1573 | str = SvPV(res, len); | |
1574 | } | |
1575 | } | |
1576 | #endif | |
89491803 | 1577 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1578 | char *ostart = SvPVX(sv); |
1579 | SvCUR_set(sv, d - ostart); | |
1580 | SvPOK_on(sv); | |
e4f3eed8 | 1581 | *d = '\0'; |
f08d6ad9 | 1582 | sv_utf8_upgrade(sv); |
d2f449dd | 1583 | /* this just broke our allocation above... */ |
eb160463 | 1584 | SvGROW(sv, (STRLEN)(send - start)); |
f08d6ad9 | 1585 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1586 | has_utf8 = TRUE; |
f08d6ad9 | 1587 | } |
eb160463 | 1588 | if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1589 | char *odest = SvPVX(sv); |
1590 | ||
8973db79 | 1591 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1592 | d = SvPVX(sv) + (d - odest); |
1593 | } | |
1594 | Copy(str, d, len, char); | |
1595 | d += len; | |
1596 | SvREFCNT_dec(res); | |
1597 | cont_scan: | |
1598 | s = e + 1; | |
1599 | } | |
1600 | else | |
5777a3f7 | 1601 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1602 | continue; |
1603 | ||
02aa26ce | 1604 | /* \c is a control character */ |
79072805 LW |
1605 | case 'c': |
1606 | s++; | |
ba210ebe JH |
1607 | { |
1608 | U8 c = *s++; | |
c7f1f016 NIS |
1609 | #ifdef EBCDIC |
1610 | if (isLOWER(c)) | |
1611 | c = toUPPER(c); | |
1612 | #endif | |
db42d148 | 1613 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1614 | } |
79072805 | 1615 | continue; |
02aa26ce NT |
1616 | |
1617 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1618 | case 'b': |
db42d148 | 1619 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1620 | break; |
1621 | case 'n': | |
db42d148 | 1622 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1623 | break; |
1624 | case 'r': | |
db42d148 | 1625 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1626 | break; |
1627 | case 'f': | |
db42d148 | 1628 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1629 | break; |
1630 | case 't': | |
db42d148 | 1631 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1632 | break; |
34a3fe2a | 1633 | case 'e': |
db42d148 | 1634 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1635 | break; |
1636 | case 'a': | |
db42d148 | 1637 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1638 | break; |
02aa26ce NT |
1639 | } /* end switch */ |
1640 | ||
79072805 LW |
1641 | s++; |
1642 | continue; | |
02aa26ce NT |
1643 | } /* end if (backslash) */ |
1644 | ||
f9a63242 | 1645 | default_action: |
2b9d42f0 NIS |
1646 | /* If we started with encoded form, or already know we want it |
1647 | and then encode the next character */ | |
1648 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1649 | STRLEN len = 1; | |
1650 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1651 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1652 | s += len; | |
1653 | if (need > len) { | |
1654 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1655 | STRLEN off = d - SvPVX(sv); | |
1656 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1657 | } | |
1658 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1659 | has_utf8 = TRUE; | |
1660 | } | |
1661 | else { | |
1662 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1663 | } | |
02aa26ce NT |
1664 | } /* while loop to process each character */ |
1665 | ||
1666 | /* terminate the string and set up the sv */ | |
79072805 | 1667 | *d = '\0'; |
463ee0b2 | 1668 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1669 | if (SvCUR(sv) >= SvLEN(sv)) |
585602fa | 1670 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1671 | |
79072805 | 1672 | SvPOK_on(sv); |
9f4817db | 1673 | if (PL_encoding && !has_utf8) { |
799ef3cb | 1674 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db JH |
1675 | has_utf8 = TRUE; |
1676 | } | |
2b9d42f0 | 1677 | if (has_utf8) { |
7e2040f0 | 1678 | SvUTF8_on(sv); |
2b9d42f0 NIS |
1679 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1680 | PL_sublex_info.sub_op->op_private |= | |
1681 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1682 | } | |
1683 | } | |
79072805 | 1684 | |
02aa26ce | 1685 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1686 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1687 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1688 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1689 | } |
02aa26ce | 1690 | |
9b599b2a | 1691 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1692 | if (s > PL_bufptr) { |
1693 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1694 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1695 | sv, Nullsv, |
4e553d73 | 1696 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1697 | ? "tr" |
3280af22 | 1698 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1699 | ? "s" |
1700 | : "qq"))); | |
79072805 | 1701 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1702 | } else |
8990e307 | 1703 | SvREFCNT_dec(sv); |
79072805 LW |
1704 | return s; |
1705 | } | |
1706 | ||
ffb4593c NT |
1707 | /* S_intuit_more |
1708 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1709 | * FALSE otherwise. | |
ffb4593c NT |
1710 | * |
1711 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1712 | * | |
1713 | * ->[ and ->{ return TRUE | |
1714 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1715 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1716 | * if we're in a pattern and the first char is a { | |
1717 | * {4,5} (any digits around the comma) returns FALSE | |
1718 | * if we're in a pattern and the first char is a [ | |
1719 | * [] returns FALSE | |
1720 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1721 | * character class or not. It has to deal with things like | |
1722 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1723 | * anything else returns TRUE | |
1724 | */ | |
1725 | ||
9cbb5ea2 GS |
1726 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1727 | ||
76e3520e | 1728 | STATIC int |
cea2e8a9 | 1729 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1730 | { |
3280af22 | 1731 | if (PL_lex_brackets) |
79072805 LW |
1732 | return TRUE; |
1733 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1734 | return TRUE; | |
1735 | if (*s != '{' && *s != '[') | |
1736 | return FALSE; | |
3280af22 | 1737 | if (!PL_lex_inpat) |
79072805 LW |
1738 | return TRUE; |
1739 | ||
1740 | /* In a pattern, so maybe we have {n,m}. */ | |
1741 | if (*s == '{') { | |
1742 | s++; | |
1743 | if (!isDIGIT(*s)) | |
1744 | return TRUE; | |
1745 | while (isDIGIT(*s)) | |
1746 | s++; | |
1747 | if (*s == ',') | |
1748 | s++; | |
1749 | while (isDIGIT(*s)) | |
1750 | s++; | |
1751 | if (*s == '}') | |
1752 | return FALSE; | |
1753 | return TRUE; | |
1754 | ||
1755 | } | |
1756 | ||
1757 | /* On the other hand, maybe we have a character class */ | |
1758 | ||
1759 | s++; | |
1760 | if (*s == ']' || *s == '^') | |
1761 | return FALSE; | |
1762 | else { | |
ffb4593c | 1763 | /* this is terrifying, and it works */ |
79072805 LW |
1764 | int weight = 2; /* let's weigh the evidence */ |
1765 | char seen[256]; | |
f27ffc4a | 1766 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1767 | char *send = strchr(s,']'); |
3280af22 | 1768 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1769 | |
1770 | if (!send) /* has to be an expression */ | |
1771 | return TRUE; | |
1772 | ||
1773 | Zero(seen,256,char); | |
1774 | if (*s == '$') | |
1775 | weight -= 3; | |
1776 | else if (isDIGIT(*s)) { | |
1777 | if (s[1] != ']') { | |
1778 | if (isDIGIT(s[1]) && s[2] == ']') | |
1779 | weight -= 10; | |
1780 | } | |
1781 | else | |
1782 | weight -= 100; | |
1783 | } | |
1784 | for (; s < send; s++) { | |
1785 | last_un_char = un_char; | |
1786 | un_char = (unsigned char)*s; | |
1787 | switch (*s) { | |
1788 | case '@': | |
1789 | case '&': | |
1790 | case '$': | |
1791 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1792 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1793 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1794 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1795 | weight -= 100; |
1796 | else | |
1797 | weight -= 10; | |
1798 | } | |
1799 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1800 | strchr("[#!%*<>()-=",s[1])) { |
1801 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1802 | weight -= 10; |
1803 | else | |
1804 | weight -= 1; | |
1805 | } | |
1806 | break; | |
1807 | case '\\': | |
1808 | un_char = 254; | |
1809 | if (s[1]) { | |
93a17b20 | 1810 | if (strchr("wds]",s[1])) |
79072805 LW |
1811 | weight += 100; |
1812 | else if (seen['\''] || seen['"']) | |
1813 | weight += 1; | |
93a17b20 | 1814 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1815 | weight += 40; |
1816 | else if (isDIGIT(s[1])) { | |
1817 | weight += 40; | |
1818 | while (s[1] && isDIGIT(s[1])) | |
1819 | s++; | |
1820 | } | |
1821 | } | |
1822 | else | |
1823 | weight += 100; | |
1824 | break; | |
1825 | case '-': | |
1826 | if (s[1] == '\\') | |
1827 | weight += 50; | |
93a17b20 | 1828 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1829 | weight += 30; |
93a17b20 | 1830 | if (strchr("zZ79~",s[1])) |
79072805 | 1831 | weight += 30; |
f27ffc4a GS |
1832 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1833 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1834 | break; |
1835 | default: | |
93a17b20 | 1836 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1837 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1838 | char *d = tmpbuf; | |
1839 | while (isALPHA(*s)) | |
1840 | *d++ = *s++; | |
1841 | *d = '\0'; | |
1842 | if (keyword(tmpbuf, d - tmpbuf)) | |
1843 | weight -= 150; | |
1844 | } | |
1845 | if (un_char == last_un_char + 1) | |
1846 | weight += 5; | |
1847 | weight -= seen[un_char]; | |
1848 | break; | |
1849 | } | |
1850 | seen[un_char]++; | |
1851 | } | |
1852 | if (weight >= 0) /* probably a character class */ | |
1853 | return FALSE; | |
1854 | } | |
1855 | ||
1856 | return TRUE; | |
1857 | } | |
ffed7fef | 1858 | |
ffb4593c NT |
1859 | /* |
1860 | * S_intuit_method | |
1861 | * | |
1862 | * Does all the checking to disambiguate | |
1863 | * foo bar | |
1864 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1865 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1866 | * | |
1867 | * First argument is the stuff after the first token, e.g. "bar". | |
1868 | * | |
1869 | * Not a method if bar is a filehandle. | |
1870 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1871 | * Not a method if it's really "Foo $bar" | |
1872 | * Method if it's "foo $bar" | |
1873 | * Not a method if it's really "print foo $bar" | |
1874 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 1875 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 1876 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1877 | * => |
1878 | */ | |
1879 | ||
76e3520e | 1880 | STATIC int |
cea2e8a9 | 1881 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1882 | { |
1883 | char *s = start + (*start == '$'); | |
3280af22 | 1884 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1885 | STRLEN len; |
1886 | GV* indirgv; | |
1887 | ||
1888 | if (gv) { | |
b6c543e3 | 1889 | CV *cv; |
a0d0e21e LW |
1890 | if (GvIO(gv)) |
1891 | return 0; | |
b6c543e3 IZ |
1892 | if ((cv = GvCVu(gv))) { |
1893 | char *proto = SvPVX(cv); | |
1894 | if (proto) { | |
1895 | if (*proto == ';') | |
1896 | proto++; | |
1897 | if (*proto == '*') | |
1898 | return 0; | |
1899 | } | |
1900 | } else | |
a0d0e21e LW |
1901 | gv = 0; |
1902 | } | |
8903cb82 | 1903 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1904 | /* start is the beginning of the possible filehandle/object, |
1905 | * and s is the end of it | |
1906 | * tmpbuf is a copy of it | |
1907 | */ | |
1908 | ||
a0d0e21e | 1909 | if (*start == '$') { |
3280af22 | 1910 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1911 | return 0; |
1912 | s = skipspace(s); | |
3280af22 NIS |
1913 | PL_bufptr = start; |
1914 | PL_expect = XREF; | |
a0d0e21e LW |
1915 | return *s == '(' ? FUNCMETH : METHOD; |
1916 | } | |
1917 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1918 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1919 | len -= 2; | |
1920 | tmpbuf[len] = '\0'; | |
1921 | goto bare_package; | |
1922 | } | |
1923 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1924 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1925 | return 0; |
1926 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1927 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1928 | s = skipspace(s); |
3280af22 | 1929 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1930 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1931 | bare_package: |
3280af22 | 1932 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1933 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1934 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1935 | PL_expect = XTERM; | |
a0d0e21e | 1936 | force_next(WORD); |
3280af22 | 1937 | PL_bufptr = s; |
a0d0e21e LW |
1938 | return *s == '(' ? FUNCMETH : METHOD; |
1939 | } | |
1940 | } | |
1941 | return 0; | |
1942 | } | |
1943 | ||
ffb4593c NT |
1944 | /* |
1945 | * S_incl_perldb | |
1946 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1947 | * is set, it will return the contents of that, otherwise a | |
1948 | * compile-time require of perl5db.pl. | |
1949 | */ | |
1950 | ||
76e3520e | 1951 | STATIC char* |
cea2e8a9 | 1952 | S_incl_perldb(pTHX) |
a0d0e21e | 1953 | { |
3280af22 | 1954 | if (PL_perldb) { |
76e3520e | 1955 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1956 | |
1957 | if (pdb) | |
1958 | return pdb; | |
91487cfc | 1959 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1960 | return "BEGIN { require 'perl5db.pl' }"; |
1961 | } | |
1962 | return ""; | |
1963 | } | |
1964 | ||
1965 | ||
16d20bd9 | 1966 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 1967 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
1968 | * Note that the filter function only applies to the current source file |
1969 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1970 | * | |
1971 | * The datasv parameter (which may be NULL) can be used to pass | |
1972 | * private data to this instance of the filter. The filter function | |
1973 | * can recover the SV using the FILTER_DATA macro and use it to | |
1974 | * store private buffers and state information. | |
1975 | * | |
1976 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 1977 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 1978 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
1979 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1980 | * private use must be set using malloc'd pointers. | |
1981 | */ | |
16d20bd9 AD |
1982 | |
1983 | SV * | |
864dbfa3 | 1984 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1985 | { |
f4c556ac GS |
1986 | if (!funcp) |
1987 | return Nullsv; | |
1988 | ||
3280af22 NIS |
1989 | if (!PL_rsfp_filters) |
1990 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1991 | if (!datasv) |
8c52afec | 1992 | datasv = NEWSV(255,0); |
16d20bd9 | 1993 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1994 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 1995 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 1996 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 1997 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 1998 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
1999 | av_unshift(PL_rsfp_filters, 1); |
2000 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
2001 | return(datasv); |
2002 | } | |
4e553d73 | 2003 | |
16d20bd9 AD |
2004 | |
2005 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2006 | void |
864dbfa3 | 2007 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2008 | { |
e0c19803 | 2009 | SV *datasv; |
fe5a182c | 2010 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2011 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2012 | return; |
2013 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2014 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2015 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2016 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2017 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2018 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2019 | |
16d20bd9 AD |
2020 | return; |
2021 | } | |
2022 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2023 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2024 | } |
2025 | ||
2026 | ||
2027 | /* Invoke the n'th filter function for the current rsfp. */ | |
2028 | I32 | |
864dbfa3 | 2029 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
4e553d73 NIS |
2030 | |
2031 | ||
8ac85365 | 2032 | /* 0 = read one text line */ |
a0d0e21e | 2033 | { |
16d20bd9 AD |
2034 | filter_t funcp; |
2035 | SV *datasv = NULL; | |
e50aee73 | 2036 | |
3280af22 | 2037 | if (!PL_rsfp_filters) |
16d20bd9 | 2038 | return -1; |
3280af22 | 2039 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
2040 | /* Provide a default input filter to make life easy. */ |
2041 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2042 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2043 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2044 | if (maxlen) { |
16d20bd9 AD |
2045 | /* Want a block */ |
2046 | int len ; | |
2047 | int old_len = SvCUR(buf_sv) ; | |
2048 | ||
2049 | /* ensure buf_sv is large enough */ | |
eb160463 | 2050 | SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ; |
3280af22 NIS |
2051 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2052 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2053 | return -1; /* error */ |
2054 | else | |
2055 | return 0 ; /* end of file */ | |
2056 | } | |
16d20bd9 AD |
2057 | SvCUR_set(buf_sv, old_len + len) ; |
2058 | } else { | |
2059 | /* Want a line */ | |
3280af22 NIS |
2060 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2061 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2062 | return -1; /* error */ |
2063 | else | |
2064 | return 0 ; /* end of file */ | |
2065 | } | |
16d20bd9 AD |
2066 | } |
2067 | return SvCUR(buf_sv); | |
2068 | } | |
2069 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 2070 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
2071 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2072 | "filter_read %d: skipped (filter deleted)\n", | |
2073 | idx)); | |
16d20bd9 AD |
2074 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2075 | } | |
2076 | /* Get function pointer hidden within datasv */ | |
4755096e | 2077 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2078 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2079 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2080 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2081 | /* Call function. The function is expected to */ |
2082 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2083 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2084 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2085 | } |
2086 | ||
76e3520e | 2087 | STATIC char * |
cea2e8a9 | 2088 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2089 | { |
c39cd008 | 2090 | #ifdef PERL_CR_FILTER |
3280af22 | 2091 | if (!PL_rsfp_filters) { |
c39cd008 | 2092 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2093 | } |
2094 | #endif | |
3280af22 | 2095 | if (PL_rsfp_filters) { |
16d20bd9 | 2096 | |
55497cff | 2097 | if (!append) |
2098 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2099 | if (FILTER_READ(0, sv, 0) > 0) |
2100 | return ( SvPVX(sv) ) ; | |
2101 | else | |
2102 | return Nullch ; | |
2103 | } | |
9d116dd7 | 2104 | else |
fd049845 | 2105 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2106 | } |
2107 | ||
01ec43d0 GS |
2108 | STATIC HV * |
2109 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2110 | { |
2111 | GV *gv; | |
2112 | ||
01ec43d0 | 2113 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2114 | return PL_curstash; |
2115 | ||
2116 | if (len > 2 && | |
2117 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2118 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2119 | { | |
2120 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2121 | } |
2122 | ||
2123 | /* use constant CLASS => 'MyClass' */ | |
2124 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2125 | SV *sv; | |
2126 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2127 | pkgname = SvPV_nolen(sv); | |
2128 | } | |
2129 | } | |
2130 | ||
2131 | return gv_stashpv(pkgname, FALSE); | |
2132 | } | |
a0d0e21e | 2133 | |
748a9306 LW |
2134 | #ifdef DEBUGGING |
2135 | static char* exp_name[] = | |
09bef843 SB |
2136 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
2137 | "ATTRTERM", "TERMBLOCK" | |
2138 | }; | |
748a9306 | 2139 | #endif |
463ee0b2 | 2140 | |
02aa26ce NT |
2141 | /* |
2142 | yylex | |
2143 | ||
2144 | Works out what to call the token just pulled out of the input | |
2145 | stream. The yacc parser takes care of taking the ops we return and | |
2146 | stitching them into a tree. | |
2147 | ||
2148 | Returns: | |
2149 | PRIVATEREF | |
2150 | ||
2151 | Structure: | |
2152 | if read an identifier | |
2153 | if we're in a my declaration | |
2154 | croak if they tried to say my($foo::bar) | |
2155 | build the ops for a my() declaration | |
2156 | if it's an access to a my() variable | |
2157 | are we in a sort block? | |
2158 | croak if my($a); $a <=> $b | |
2159 | build ops for access to a my() variable | |
2160 | if in a dq string, and they've said @foo and we can't find @foo | |
2161 | croak | |
2162 | build ops for a bareword | |
2163 | if we already built the token before, use it. | |
2164 | */ | |
2165 | ||
dba4d153 | 2166 | #ifdef USE_PURE_BISON |
864dbfa3 | 2167 | int |
dba4d153 | 2168 | Perl_yylex_r(pTHX_ YYSTYPE *lvalp, int *lcharp) |
378cc40b | 2169 | { |
20141f0e IRC |
2170 | int r; |
2171 | ||
6f202aea | 2172 | yyactlevel++; |
20141f0e IRC |
2173 | yylval_pointer[yyactlevel] = lvalp; |
2174 | yychar_pointer[yyactlevel] = lcharp; | |
b73d6f50 IRC |
2175 | if (yyactlevel >= YYMAXLEVEL) |
2176 | Perl_croak(aTHX_ "panic: YYMAXLEVEL"); | |
20141f0e | 2177 | |
dba4d153 | 2178 | r = Perl_yylex(aTHX); |
20141f0e | 2179 | |
d8ae6756 IRC |
2180 | if (yyactlevel > 0) |
2181 | yyactlevel--; | |
20141f0e IRC |
2182 | |
2183 | return r; | |
2184 | } | |
dba4d153 | 2185 | #endif |
20141f0e | 2186 | |
dba4d153 JH |
2187 | #ifdef __SC__ |
2188 | #pragma segment Perl_yylex | |
2189 | #endif | |
dba4d153 | 2190 | int |
dba4d153 | 2191 | Perl_yylex(pTHX) |
20141f0e | 2192 | { |
79072805 | 2193 | register char *s; |
378cc40b | 2194 | register char *d; |
79072805 | 2195 | register I32 tmp; |
463ee0b2 | 2196 | STRLEN len; |
161b471a NIS |
2197 | GV *gv = Nullgv; |
2198 | GV **gvp = 0; | |
aa7440fb | 2199 | bool bof = FALSE; |
a687059c | 2200 | |
02aa26ce | 2201 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2202 | if (PL_pending_ident) |
e930465f | 2203 | return S_pending_ident(aTHX); |
bbce6d69 | 2204 | |
02aa26ce NT |
2205 | /* no identifier pending identification */ |
2206 | ||
3280af22 | 2207 | switch (PL_lex_state) { |
79072805 LW |
2208 | #ifdef COMMENTARY |
2209 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2210 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2211 | break; | |
2212 | #endif | |
2213 | ||
09bef843 | 2214 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2215 | case LEX_KNOWNEXT: |
3280af22 NIS |
2216 | PL_nexttoke--; |
2217 | yylval = PL_nextval[PL_nexttoke]; | |
2218 | if (!PL_nexttoke) { | |
2219 | PL_lex_state = PL_lex_defer; | |
2220 | PL_expect = PL_lex_expect; | |
2221 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2222 | } |
607df283 | 2223 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2224 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2225 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2226 | |
3280af22 | 2227 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2228 | |
02aa26ce | 2229 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2230 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2231 | */ |
79072805 LW |
2232 | case LEX_INTERPCASEMOD: |
2233 | #ifdef DEBUGGING | |
3280af22 | 2234 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2235 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2236 | #endif |
02aa26ce | 2237 | /* handle \E or end of string */ |
3280af22 | 2238 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2239 | char oldmod; |
02aa26ce NT |
2240 | |
2241 | /* if at a \E */ | |
3280af22 NIS |
2242 | if (PL_lex_casemods) { |
2243 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2244 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2245 | |
3280af22 NIS |
2246 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2247 | PL_bufptr += 2; | |
2248 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2249 | } |
79072805 LW |
2250 | return ')'; |
2251 | } | |
3280af22 NIS |
2252 | if (PL_bufptr != PL_bufend) |
2253 | PL_bufptr += 2; | |
2254 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2255 | return yylex(); |
79072805 LW |
2256 | } |
2257 | else { | |
607df283 | 2258 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2259 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2260 | s = PL_bufptr + 1; |
79072805 | 2261 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
eb160463 | 2262 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ |
a0d0e21e | 2263 | if (strchr("LU", *s) && |
3280af22 | 2264 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2265 | { |
3280af22 | 2266 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2267 | return ')'; |
2268 | } | |
3280af22 NIS |
2269 | if (PL_lex_casemods > 10) { |
2270 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2271 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2272 | SAVEFREEPV(newlb); |
3280af22 | 2273 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2274 | } |
2275 | } | |
3280af22 NIS |
2276 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2277 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2278 | PL_lex_state = LEX_INTERPCONCAT; | |
2279 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2280 | force_next('('); |
2281 | if (*s == 'l') | |
3280af22 | 2282 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2283 | else if (*s == 'u') |
3280af22 | 2284 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2285 | else if (*s == 'L') |
3280af22 | 2286 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2287 | else if (*s == 'U') |
3280af22 | 2288 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2289 | else if (*s == 'Q') |
3280af22 | 2290 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2291 | else |
cea2e8a9 | 2292 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2293 | PL_bufptr = s + 1; |
79072805 | 2294 | force_next(FUNC); |
3280af22 NIS |
2295 | if (PL_lex_starts) { |
2296 | s = PL_bufptr; | |
2297 | PL_lex_starts = 0; | |
79072805 LW |
2298 | Aop(OP_CONCAT); |
2299 | } | |
2300 | else | |
cea2e8a9 | 2301 | return yylex(); |
79072805 LW |
2302 | } |
2303 | ||
55497cff | 2304 | case LEX_INTERPPUSH: |
2305 | return sublex_push(); | |
2306 | ||
79072805 | 2307 | case LEX_INTERPSTART: |
3280af22 | 2308 | if (PL_bufptr == PL_bufend) |
79072805 | 2309 | return sublex_done(); |
607df283 | 2310 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2311 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2312 | PL_expect = XTERM; |
2313 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2314 | PL_lex_state = LEX_INTERPNORMAL; | |
2315 | if (PL_lex_dojoin) { | |
2316 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2317 | force_next(','); |
4d1ff10f | 2318 | #ifdef USE_5005THREADS |
533c011a NIS |
2319 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2320 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2321 | force_next(PRIVATEREF); |
2322 | #else | |
a0d0e21e | 2323 | force_ident("\"", '$'); |
4d1ff10f | 2324 | #endif /* USE_5005THREADS */ |
3280af22 | 2325 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2326 | force_next('$'); |
3280af22 | 2327 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2328 | force_next('('); |
3280af22 | 2329 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2330 | force_next(FUNC); |
2331 | } | |
3280af22 NIS |
2332 | if (PL_lex_starts++) { |
2333 | s = PL_bufptr; | |
79072805 LW |
2334 | Aop(OP_CONCAT); |
2335 | } | |
cea2e8a9 | 2336 | return yylex(); |
79072805 LW |
2337 | |
2338 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2339 | if (intuit_more(PL_bufptr)) { |
2340 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2341 | break; |
2342 | } | |
2343 | /* FALL THROUGH */ | |
2344 | ||
2345 | case LEX_INTERPEND: | |
3280af22 NIS |
2346 | if (PL_lex_dojoin) { |
2347 | PL_lex_dojoin = FALSE; | |
2348 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2349 | return ')'; |
2350 | } | |
43a16006 | 2351 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2352 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2353 | { |
e9fa98b2 | 2354 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2355 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2356 | PL_lex_repl = Nullsv; |
2357 | } | |
79072805 LW |
2358 | /* FALLTHROUGH */ |
2359 | case LEX_INTERPCONCAT: | |
2360 | #ifdef DEBUGGING | |
3280af22 | 2361 | if (PL_lex_brackets) |
cea2e8a9 | 2362 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2363 | #endif |
3280af22 | 2364 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2365 | return sublex_done(); |
2366 | ||
3280af22 NIS |
2367 | if (SvIVX(PL_linestr) == '\'') { |
2368 | SV *sv = newSVsv(PL_linestr); | |
2369 | if (!PL_lex_inpat) | |
76e3520e | 2370 | sv = tokeq(sv); |
3280af22 | 2371 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2372 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2373 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2374 | s = PL_bufend; |
79072805 LW |
2375 | } |
2376 | else { | |
3280af22 | 2377 | s = scan_const(PL_bufptr); |
79072805 | 2378 | if (*s == '\\') |
3280af22 | 2379 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2380 | else |
3280af22 | 2381 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2382 | } |
2383 | ||
3280af22 NIS |
2384 | if (s != PL_bufptr) { |
2385 | PL_nextval[PL_nexttoke] = yylval; | |
2386 | PL_expect = XTERM; | |
79072805 | 2387 | force_next(THING); |
3280af22 | 2388 | if (PL_lex_starts++) |
79072805 LW |
2389 | Aop(OP_CONCAT); |
2390 | else { | |
3280af22 | 2391 | PL_bufptr = s; |
cea2e8a9 | 2392 | return yylex(); |
79072805 LW |
2393 | } |
2394 | } | |
2395 | ||
cea2e8a9 | 2396 | return yylex(); |
a0d0e21e | 2397 | case LEX_FORMLINE: |
3280af22 NIS |
2398 | PL_lex_state = LEX_NORMAL; |
2399 | s = scan_formline(PL_bufptr); | |
2400 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2401 | goto rightbracket; |
2402 | OPERATOR(';'); | |
79072805 LW |
2403 | } |
2404 | ||
3280af22 NIS |
2405 | s = PL_bufptr; |
2406 | PL_oldoldbufptr = PL_oldbufptr; | |
2407 | PL_oldbufptr = s; | |
607df283 | 2408 | DEBUG_T( { |
bf49b057 GS |
2409 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2410 | exp_name[PL_expect], s); | |
5f80b19c | 2411 | } ); |
463ee0b2 LW |
2412 | |
2413 | retry: | |
378cc40b LW |
2414 | switch (*s) { |
2415 | default: | |
7e2040f0 | 2416 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2417 | goto keylookup; |
cea2e8a9 | 2418 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2419 | case 4: |
2420 | case 26: | |
2421 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2422 | case 0: |
3280af22 NIS |
2423 | if (!PL_rsfp) { |
2424 | PL_last_uni = 0; | |
2425 | PL_last_lop = 0; | |
2426 | if (PL_lex_brackets) | |
d98d5fff | 2427 | yyerror("Missing right curly or square bracket"); |
4e553d73 | 2428 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2429 | "### Tokener got EOF\n"); |
5f80b19c | 2430 | } ); |
79072805 | 2431 | TOKEN(0); |
463ee0b2 | 2432 | } |
3280af22 | 2433 | if (s++ < PL_bufend) |
a687059c | 2434 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2435 | PL_last_uni = 0; |
2436 | PL_last_lop = 0; | |
2437 | if (!PL_in_eval && !PL_preambled) { | |
2438 | PL_preambled = TRUE; | |
2439 | sv_setpv(PL_linestr,incl_perldb()); | |
2440 | if (SvCUR(PL_linestr)) | |
2441 | sv_catpv(PL_linestr,";"); | |
2442 | if (PL_preambleav){ | |
2443 | while(AvFILLp(PL_preambleav) >= 0) { | |
2444 | SV *tmpsv = av_shift(PL_preambleav); | |
2445 | sv_catsv(PL_linestr, tmpsv); | |
2446 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2447 | sv_free(tmpsv); |
2448 | } | |
3280af22 NIS |
2449 | sv_free((SV*)PL_preambleav); |
2450 | PL_preambleav = NULL; | |
91b7def8 | 2451 | } |
3280af22 NIS |
2452 | if (PL_minus_n || PL_minus_p) { |
2453 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2454 | if (PL_minus_l) | |
2455 | sv_catpv(PL_linestr,"chomp;"); | |
2456 | if (PL_minus_a) { | |
3280af22 NIS |
2457 | if (PL_minus_F) { |
2458 | if (strchr("/'\"", *PL_splitstr) | |
2459 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
3db68c4c | 2460 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2461 | else { |
2462 | char delim; | |
2463 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2464 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2465 | delim = *s; |
75c72d73 | 2466 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2467 | "q" + (delim == '\''), delim); |
3280af22 | 2468 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2469 | if (*s == '\\') |
3280af22 NIS |
2470 | sv_catpvn(PL_linestr, "\\", 1); |
2471 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2472 | } |
cea2e8a9 | 2473 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2474 | } |
2304df62 AD |
2475 | } |
2476 | else | |
75c72d73 | 2477 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2478 | } |
79072805 | 2479 | } |
3280af22 NIS |
2480 | sv_catpv(PL_linestr, "\n"); |
2481 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2482 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2483 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2484 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2485 | SV *sv = NEWSV(85,0); |
2486 | ||
2487 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2488 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2489 | (void)SvIOK_on(sv); |
2490 | SvIVX(sv) = 0; | |
57843af0 | 2491 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2492 | } |
79072805 | 2493 | goto retry; |
a687059c | 2494 | } |
e929a76b | 2495 | do { |
aa7440fb | 2496 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2497 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2498 | fake_eof: | |
2499 | if (PL_rsfp) { | |
2500 | if (PL_preprocess && !PL_in_eval) | |
2501 | (void)PerlProc_pclose(PL_rsfp); | |
2502 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2503 | PerlIO_clearerr(PL_rsfp); | |
2504 | else | |
2505 | (void)PerlIO_close(PL_rsfp); | |
2506 | PL_rsfp = Nullfp; | |
2507 | PL_doextract = FALSE; | |
2508 | } | |
2509 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2510 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2511 | sv_catpv(PL_linestr,";}"); | |
2512 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2513 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2514 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2515 | PL_minus_n = PL_minus_p = 0; |
2516 | goto retry; | |
2517 | } | |
2518 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2519 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2520 | sv_setpv(PL_linestr,""); |
2521 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2522 | } | |
2523 | /* if it looks like the start of a BOM, check if it in fact is */ | |
2524 | else if (bof && (!*s || *(U8*)s == 0xEF || *(U8*)s >= 0xFE)) { | |
226017aa | 2525 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2526 | # ifdef __GNU_LIBRARY__ |
2527 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2528 | # define FTELL_FOR_PIPE_IS_BROKEN |
2529 | # endif | |
e3f494f1 JH |
2530 | # else |
2531 | # ifdef __GLIBC__ | |
2532 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2533 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2534 | # endif | |
2535 | # endif | |
226017aa DD |
2536 | # endif |
2537 | #endif | |
2538 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2539 | /* This loses the possibility to detect the bof | |
2540 | * situation on perl -P when the libc5 is being used. | |
2541 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2542 | */ | |
2543 | if (!PL_preprocess) | |
7e28d3af | 2544 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2545 | #else |
eb160463 | 2546 | bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr); |
226017aa | 2547 | #endif |
7e28d3af | 2548 | if (bof) { |
3280af22 | 2549 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2550 | s = swallow_bom((U8*)s); |
e929a76b | 2551 | } |
378cc40b | 2552 | } |
3280af22 | 2553 | if (PL_doextract) { |
a0d0e21e LW |
2554 | /* Incest with pod. */ |
2555 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2556 | sv_setpv(PL_linestr, ""); |
2557 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2558 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2559 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2560 | PL_doextract = FALSE; |
a0d0e21e | 2561 | } |
4e553d73 | 2562 | } |
463ee0b2 | 2563 | incline(s); |
3280af22 NIS |
2564 | } while (PL_doextract); |
2565 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2566 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2567 | SV *sv = NEWSV(85,0); |
a687059c | 2568 | |
93a17b20 | 2569 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2570 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2571 | (void)SvIOK_on(sv); |
2572 | SvIVX(sv) = 0; | |
57843af0 | 2573 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2574 | } |
3280af22 | 2575 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2576 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2577 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2578 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2579 | s++; |
a0d0e21e | 2580 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2581 | s++; |
44a8e56a | 2582 | d = Nullch; |
3280af22 | 2583 | if (!PL_in_eval) { |
44a8e56a | 2584 | if (*s == '#' && *(s+1) == '!') |
2585 | d = s + 2; | |
2586 | #ifdef ALTERNATE_SHEBANG | |
2587 | else { | |
2588 | static char as[] = ALTERNATE_SHEBANG; | |
2589 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2590 | d = s + (sizeof(as) - 1); | |
2591 | } | |
2592 | #endif /* ALTERNATE_SHEBANG */ | |
2593 | } | |
2594 | if (d) { | |
b8378b72 | 2595 | char *ipath; |
774d564b | 2596 | char *ipathend; |
b8378b72 | 2597 | |
774d564b | 2598 | while (isSPACE(*d)) |
b8378b72 CS |
2599 | d++; |
2600 | ipath = d; | |
774d564b | 2601 | while (*d && !isSPACE(*d)) |
2602 | d++; | |
2603 | ipathend = d; | |
2604 | ||
2605 | #ifdef ARG_ZERO_IS_SCRIPT | |
2606 | if (ipathend > ipath) { | |
2607 | /* | |
2608 | * HP-UX (at least) sets argv[0] to the script name, | |
2609 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2610 | * at least, set argv[0] to the basename of the Perl | |
2611 | * interpreter. So, having found "#!", we'll set it right. | |
2612 | */ | |
ee2f7564 | 2613 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2614 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2615 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2616 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2617 | SvSETMAGIC(x); |
2618 | } | |
556c1dec JH |
2619 | else { |
2620 | STRLEN blen; | |
2621 | STRLEN llen; | |
2622 | char *bstart = SvPV(CopFILESV(PL_curcop),blen); | |
2623 | char *lstart = SvPV(x,llen); | |
2624 | if (llen < blen) { | |
2625 | bstart += blen - llen; | |
2626 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
2627 | sv_setpvn(x, ipath, ipathend - ipath); | |
2628 | SvSETMAGIC(x); | |
2629 | } | |
2630 | } | |
2631 | } | |
774d564b | 2632 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2633 | } |
774d564b | 2634 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2635 | |
2636 | /* | |
2637 | * Look for options. | |
2638 | */ | |
748a9306 | 2639 | d = instr(s,"perl -"); |
84e30d1a | 2640 | if (!d) { |
748a9306 | 2641 | d = instr(s,"perl"); |
84e30d1a GS |
2642 | #if defined(DOSISH) |
2643 | /* avoid getting into infinite loops when shebang | |
2644 | * line contains "Perl" rather than "perl" */ | |
2645 | if (!d) { | |
2646 | for (d = ipathend-4; d >= ipath; --d) { | |
2647 | if ((*d == 'p' || *d == 'P') | |
2648 | && !ibcmp(d, "perl", 4)) | |
2649 | { | |
2650 | break; | |
2651 | } | |
2652 | } | |
2653 | if (d < ipath) | |
2654 | d = Nullch; | |
2655 | } | |
2656 | #endif | |
2657 | } | |
44a8e56a | 2658 | #ifdef ALTERNATE_SHEBANG |
2659 | /* | |
2660 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2661 | * character that can be part of a Perl expression, then if | |
2662 | * we see it but not "perl", we're probably looking at the | |
2663 | * start of Perl code, not a request to hand off to some | |
2664 | * other interpreter. Similarly, if "perl" is there, but | |
2665 | * not in the first 'word' of the line, we assume the line | |
2666 | * contains the start of the Perl program. | |
44a8e56a | 2667 | */ |
2668 | if (d && *s != '#') { | |
774d564b | 2669 | char *c = ipath; |
44a8e56a | 2670 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2671 | c++; | |
2672 | if (c < d) | |
2673 | d = Nullch; /* "perl" not in first word; ignore */ | |
2674 | else | |
2675 | *s = '#'; /* Don't try to parse shebang line */ | |
2676 | } | |
774d564b | 2677 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2678 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2679 | if (!d && |
44a8e56a | 2680 | *s == '#' && |
774d564b | 2681 | ipathend > ipath && |
3280af22 | 2682 | !PL_minus_c && |
748a9306 | 2683 | !instr(s,"indir") && |
3280af22 | 2684 | instr(PL_origargv[0],"perl")) |
748a9306 | 2685 | { |
9f68db38 | 2686 | char **newargv; |
9f68db38 | 2687 | |
774d564b | 2688 | *ipathend = '\0'; |
2689 | s = ipathend + 1; | |
3280af22 | 2690 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2691 | s++; |
3280af22 NIS |
2692 | if (s < PL_bufend) { |
2693 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2694 | newargv[1] = s; |
3280af22 | 2695 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2696 | s++; |
2697 | *s = '\0'; | |
3280af22 | 2698 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2699 | } |
2700 | else | |
3280af22 | 2701 | newargv = PL_origargv; |
774d564b | 2702 | newargv[0] = ipath; |
b4748376 | 2703 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
cea2e8a9 | 2704 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2705 | } |
bf4acbe4 | 2706 | #endif |
748a9306 | 2707 | if (d) { |
3280af22 NIS |
2708 | U32 oldpdb = PL_perldb; |
2709 | bool oldn = PL_minus_n; | |
2710 | bool oldp = PL_minus_p; | |
748a9306 LW |
2711 | |
2712 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2713 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2714 | |
2715 | if (*d++ == '-') { | |
a11ec5a9 | 2716 | bool switches_done = PL_doswitches; |
8cc95fdb | 2717 | do { |
2718 | if (*d == 'M' || *d == 'm') { | |
2719 | char *m = d; | |
2720 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2721 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2722 | (int)(d - m), m); |
2723 | } | |
2724 | d = moreswitches(d); | |
2725 | } while (d); | |
155aba94 GS |
2726 | if ((PERLDB_LINE && !oldpdb) || |
2727 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2728 | /* if we have already added "LINE: while (<>) {", |
2729 | we must not do it again */ | |
748a9306 | 2730 | { |
3280af22 NIS |
2731 | sv_setpv(PL_linestr, ""); |
2732 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2733 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2734 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2735 | PL_preambled = FALSE; |
84902520 | 2736 | if (PERLDB_LINE) |
3280af22 | 2737 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2738 | goto retry; |
2739 | } | |
a11ec5a9 RGS |
2740 | if (PL_doswitches && !switches_done) { |
2741 | int argc = PL_origargc; | |
2742 | char **argv = PL_origargv; | |
2743 | do { | |
2744 | argc--,argv++; | |
2745 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2746 | init_argv_symbols(argc,argv); | |
2747 | } | |
a0d0e21e | 2748 | } |
79072805 | 2749 | } |
9f68db38 | 2750 | } |
79072805 | 2751 | } |
3280af22 NIS |
2752 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2753 | PL_bufptr = s; | |
2754 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2755 | return yylex(); |
ae986130 | 2756 | } |
378cc40b | 2757 | goto retry; |
4fdae800 | 2758 | case '\r': |
6a27c188 | 2759 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2760 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2761 | Perl_croak(aTHX_ |
cc507455 | 2762 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2763 | #endif |
4fdae800 | 2764 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2765 | #ifdef MACOS_TRADITIONAL |
2766 | case '\312': | |
2767 | #endif | |
378cc40b LW |
2768 | s++; |
2769 | goto retry; | |
378cc40b | 2770 | case '#': |
e929a76b | 2771 | case '\n': |
3280af22 | 2772 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2773 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2774 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2775 | CopLINE_dec(PL_curcop); | |
2776 | incline(s); | |
2777 | } | |
3280af22 | 2778 | d = PL_bufend; |
a687059c | 2779 | while (s < d && *s != '\n') |
378cc40b | 2780 | s++; |
0f85fab0 | 2781 | if (s < d) |
378cc40b | 2782 | s++; |
78c267c1 | 2783 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2784 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2785 | incline(s); |
3280af22 NIS |
2786 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2787 | PL_bufptr = s; | |
2788 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2789 | return yylex(); |
a687059c | 2790 | } |
378cc40b | 2791 | } |
a687059c | 2792 | else { |
378cc40b | 2793 | *s = '\0'; |
3280af22 | 2794 | PL_bufend = s; |
a687059c | 2795 | } |
378cc40b LW |
2796 | goto retry; |
2797 | case '-': | |
79072805 | 2798 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2799 | I32 ftst = 0; |
2800 | ||
378cc40b | 2801 | s++; |
3280af22 | 2802 | PL_bufptr = s; |
748a9306 LW |
2803 | tmp = *s++; |
2804 | ||
bf4acbe4 | 2805 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2806 | s++; |
2807 | ||
2808 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2809 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2810 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2811 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2812 | } ); |
748a9306 LW |
2813 | OPERATOR('-'); /* unary minus */ |
2814 | } | |
3280af22 | 2815 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2816 | switch (tmp) { |
e5edeb50 JH |
2817 | case 'r': ftst = OP_FTEREAD; break; |
2818 | case 'w': ftst = OP_FTEWRITE; break; | |
2819 | case 'x': ftst = OP_FTEEXEC; break; | |
2820 | case 'o': ftst = OP_FTEOWNED; break; | |
2821 | case 'R': ftst = OP_FTRREAD; break; | |
2822 | case 'W': ftst = OP_FTRWRITE; break; | |
2823 | case 'X': ftst = OP_FTREXEC; break; | |
2824 | case 'O': ftst = OP_FTROWNED; break; | |
2825 | case 'e': ftst = OP_FTIS; break; | |
2826 | case 'z': ftst = OP_FTZERO; break; | |
2827 | case 's': ftst = OP_FTSIZE; break; | |
2828 | case 'f': ftst = OP_FTFILE; break; | |
2829 | case 'd': ftst = OP_FTDIR; break; | |
2830 | case 'l': ftst = OP_FTLINK; break; | |
2831 | case 'p': ftst = OP_FTPIPE; break; | |
2832 | case 'S': ftst = OP_FTSOCK; break; | |
2833 | case 'u': ftst = OP_FTSUID; break; | |
2834 | case 'g': ftst = OP_FTSGID; break; | |
2835 | case 'k': ftst = OP_FTSVTX; break; | |
2836 | case 'b': ftst = OP_FTBLK; break; | |
2837 | case 'c': ftst = OP_FTCHR; break; | |
2838 | case 't': ftst = OP_FTTTY; break; | |
2839 | case 'T': ftst = OP_FTTEXT; break; | |
2840 | case 'B': ftst = OP_FTBINARY; break; | |
2841 | case 'M': case 'A': case 'C': | |
2842 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2843 | switch (tmp) { | |
2844 | case 'M': ftst = OP_FTMTIME; break; | |
2845 | case 'A': ftst = OP_FTATIME; break; | |
2846 | case 'C': ftst = OP_FTCTIME; break; | |
2847 | default: break; | |
2848 | } | |
2849 | break; | |
378cc40b | 2850 | default: |
378cc40b LW |
2851 | break; |
2852 | } | |
e5edeb50 | 2853 | if (ftst) { |
eb160463 | 2854 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 2855 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 2856 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 2857 | } ); |
e5edeb50 JH |
2858 | FTST(ftst); |
2859 | } | |
2860 | else { | |
2861 | /* Assume it was a minus followed by a one-letter named | |
2862 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 2863 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 RB |
2864 | "### %c looked like a file test but was not\n", |
2865 | (int)ftst); | |
5f80b19c | 2866 | } ); |
e5edeb50 JH |
2867 | s -= 2; |
2868 | } | |
378cc40b | 2869 | } |
a687059c LW |
2870 | tmp = *s++; |
2871 | if (*s == tmp) { | |
2872 | s++; | |
3280af22 | 2873 | if (PL_expect == XOPERATOR) |
79072805 LW |
2874 | TERM(POSTDEC); |
2875 | else | |
2876 | OPERATOR(PREDEC); | |
2877 | } | |
2878 | else if (*s == '>') { | |
2879 | s++; | |
2880 | s = skipspace(s); | |
7e2040f0 | 2881 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2882 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2883 | TOKEN(ARROW); |
79072805 | 2884 | } |
748a9306 LW |
2885 | else if (*s == '$') |
2886 | OPERATOR(ARROW); | |
463ee0b2 | 2887 | else |
748a9306 | 2888 | TERM(ARROW); |
a687059c | 2889 | } |
3280af22 | 2890 | if (PL_expect == XOPERATOR) |
79072805 LW |
2891 | Aop(OP_SUBTRACT); |
2892 | else { | |
3280af22 | 2893 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2894 | check_uni(); |
79072805 | 2895 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2896 | } |
79072805 | 2897 | |
378cc40b | 2898 | case '+': |
a687059c LW |
2899 | tmp = *s++; |
2900 | if (*s == tmp) { | |
378cc40b | 2901 | s++; |
3280af22 | 2902 | if (PL_expect == XOPERATOR) |
79072805 LW |
2903 | TERM(POSTINC); |
2904 | else | |
2905 | OPERATOR(PREINC); | |
378cc40b | 2906 | } |
3280af22 | 2907 | if (PL_expect == XOPERATOR) |
79072805 LW |
2908 | Aop(OP_ADD); |
2909 | else { | |
3280af22 | 2910 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2911 | check_uni(); |
a687059c | 2912 | OPERATOR('+'); |
2f3197b3 | 2913 | } |
a687059c | 2914 | |
378cc40b | 2915 | case '*': |
3280af22 NIS |
2916 | if (PL_expect != XOPERATOR) { |
2917 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2918 | PL_expect = XOPERATOR; | |
2919 | force_ident(PL_tokenbuf, '*'); | |
2920 | if (!*PL_tokenbuf) | |
a0d0e21e | 2921 | PREREF('*'); |
79072805 | 2922 | TERM('*'); |
a687059c | 2923 | } |
79072805 LW |
2924 | s++; |
2925 | if (*s == '*') { | |
a687059c | 2926 | s++; |
79072805 | 2927 | PWop(OP_POW); |
a687059c | 2928 | } |
79072805 LW |
2929 | Mop(OP_MULTIPLY); |
2930 | ||
378cc40b | 2931 | case '%': |
3280af22 | 2932 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2933 | ++s; |
2934 | Mop(OP_MODULO); | |
a687059c | 2935 | } |
3280af22 NIS |
2936 | PL_tokenbuf[0] = '%'; |
2937 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2938 | if (!PL_tokenbuf[1]) { | |
2939 | if (s == PL_bufend) | |
bbce6d69 | 2940 | yyerror("Final % should be \\% or %name"); |
2941 | PREREF('%'); | |
a687059c | 2942 | } |
3280af22 | 2943 | PL_pending_ident = '%'; |
bbce6d69 | 2944 | TERM('%'); |
a687059c | 2945 | |
378cc40b | 2946 | case '^': |
79072805 | 2947 | s++; |
a0d0e21e | 2948 | BOop(OP_BIT_XOR); |
79072805 | 2949 | case '[': |
3280af22 | 2950 | PL_lex_brackets++; |
79072805 | 2951 | /* FALL THROUGH */ |
378cc40b | 2952 | case '~': |
378cc40b | 2953 | case ',': |
378cc40b LW |
2954 | tmp = *s++; |
2955 | OPERATOR(tmp); | |
a0d0e21e LW |
2956 | case ':': |
2957 | if (s[1] == ':') { | |
2958 | len = 0; | |
2959 | goto just_a_word; | |
2960 | } | |
2961 | s++; | |
09bef843 SB |
2962 | switch (PL_expect) { |
2963 | OP *attrs; | |
2964 | case XOPERATOR: | |
2965 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2966 | break; | |
2967 | PL_bufptr = s; /* update in case we back off */ | |
2968 | goto grabattrs; | |
2969 | case XATTRBLOCK: | |
2970 | PL_expect = XBLOCK; | |
2971 | goto grabattrs; | |
2972 | case XATTRTERM: | |
2973 | PL_expect = XTERMBLOCK; | |
2974 | grabattrs: | |
2975 | s = skipspace(s); | |
2976 | attrs = Nullop; | |
7e2040f0 | 2977 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2978 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2979 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2980 | if (tmp < 0) tmp = -tmp; | |
2981 | switch (tmp) { | |
2982 | case KEY_or: | |
2983 | case KEY_and: | |
c963b151 | 2984 | case KEY_err: |
f9829d6b GS |
2985 | case KEY_for: |
2986 | case KEY_unless: | |
2987 | case KEY_if: | |
2988 | case KEY_while: | |
2989 | case KEY_until: | |
2990 | goto got_attrs; | |
2991 | default: | |
2992 | break; | |
2993 | } | |
2994 | } | |
09bef843 SB |
2995 | if (*d == '(') { |
2996 | d = scan_str(d,TRUE,TRUE); | |
2997 | if (!d) { | |
09bef843 SB |
2998 | /* MUST advance bufptr here to avoid bogus |
2999 | "at end of line" context messages from yyerror(). | |
3000 | */ | |
3001 | PL_bufptr = s + len; | |
3002 | yyerror("Unterminated attribute parameter in attribute list"); | |
3003 | if (attrs) | |
3004 | op_free(attrs); | |
3005 | return 0; /* EOF indicator */ | |
3006 | } | |
3007 | } | |
3008 | if (PL_lex_stuff) { | |
3009 | SV *sv = newSVpvn(s, len); | |
3010 | sv_catsv(sv, PL_lex_stuff); | |
3011 | attrs = append_elem(OP_LIST, attrs, | |
3012 | newSVOP(OP_CONST, 0, sv)); | |
3013 | SvREFCNT_dec(PL_lex_stuff); | |
3014 | PL_lex_stuff = Nullsv; | |
3015 | } | |
3016 | else { | |
d3cea301 SB |
3017 | /* NOTE: any CV attrs applied here need to be part of |
3018 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
78f9721b SM |
3019 | if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
3020 | CvLVALUE_on(PL_compcv); | |
3021 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3022 | CvLOCKED_on(PL_compcv); | |
3023 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3024 | CvMETHOD_on(PL_compcv); | |
87ecf892 | 3025 | #ifdef USE_ITHREADS |
d3cea301 SB |
3026 | else if (PL_in_my == KEY_our && len == 6 && |
3027 | strnEQ(s, "unique", len)) | |
7fb37951 | 3028 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); |
87ecf892 | 3029 | #endif |
78f9721b SM |
3030 | /* After we've set the flags, it could be argued that |
3031 | we don't need to do the attributes.pm-based setting | |
3032 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
3033 | flags. To experiment with that, uncomment the |
3034 | following "else". (Note that's already been | |
3035 | uncommented. That keeps the above-applied built-in | |
3036 | attributes from being intercepted (and possibly | |
3037 | rejected) by a package's attribute routines, but is | |
3038 | justified by the performance win for the common case | |
3039 | of applying only built-in attributes.) */ | |
0256094b | 3040 | else |
78f9721b SM |
3041 | attrs = append_elem(OP_LIST, attrs, |
3042 | newSVOP(OP_CONST, 0, | |
3043 | newSVpvn(s, len))); | |
09bef843 SB |
3044 | } |
3045 | s = skipspace(d); | |
0120eecf | 3046 | if (*s == ':' && s[1] != ':') |
09bef843 | 3047 | s = skipspace(s+1); |
0120eecf GS |
3048 | else if (s == d) |
3049 | break; /* require real whitespace or :'s */ | |
09bef843 | 3050 | } |
f9829d6b | 3051 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
8e7ae056 | 3052 | if (*s != ';' && *s != '}' && *s != tmp && (tmp != '=' || *s != ')')) { |
09bef843 SB |
3053 | char q = ((*s == '\'') ? '"' : '\''); |
3054 | /* If here for an expression, and parsed no attrs, back off. */ | |
3055 | if (tmp == '=' && !attrs) { | |
3056 | s = PL_bufptr; | |
3057 | break; | |
3058 | } | |
3059 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3060 | context messages from yyerror(). | |
3061 | */ | |
3062 | PL_bufptr = s; | |
3063 | if (!*s) | |
3064 | yyerror("Unterminated attribute list"); | |
3065 | else | |
3066 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3067 | q, *s, q)); | |
3068 | if (attrs) | |
3069 | op_free(attrs); | |
3070 | OPERATOR(':'); | |
3071 | } | |
f9829d6b | 3072 | got_attrs: |
09bef843 SB |
3073 | if (attrs) { |
3074 | PL_nextval[PL_nexttoke].opval = attrs; | |
3075 | force_next(THING); | |
3076 | } | |
3077 | TOKEN(COLONATTR); | |
3078 | } | |
a0d0e21e | 3079 | OPERATOR(':'); |
8990e307 LW |
3080 | case '(': |
3081 | s++; | |
3280af22 NIS |
3082 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3083 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3084 | else |
3280af22 | 3085 | PL_expect = XTERM; |
a0d0e21e | 3086 | TOKEN('('); |
378cc40b | 3087 | case ';': |
f4dd75d9 | 3088 | CLINE; |
378cc40b LW |
3089 | tmp = *s++; |
3090 | OPERATOR(tmp); | |
3091 | case ')': | |
378cc40b | 3092 | tmp = *s++; |
16d20bd9 AD |
3093 | s = skipspace(s); |
3094 | if (*s == '{') | |
3095 | PREBLOCK(tmp); | |
378cc40b | 3096 | TERM(tmp); |
79072805 LW |
3097 | case ']': |
3098 | s++; | |
3280af22 | 3099 | if (PL_lex_brackets <= 0) |
d98d5fff | 3100 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3101 | else |
3280af22 NIS |
3102 | --PL_lex_brackets; |
3103 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3104 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3105 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3106 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3107 | } |
3108 | } | |
4633a7c4 | 3109 | TERM(']'); |
79072805 LW |
3110 | case '{': |
3111 | leftbracket: | |
79072805 | 3112 | s++; |
3280af22 NIS |
3113 | if (PL_lex_brackets > 100) { |
3114 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
3115 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 3116 | SAVEFREEPV(newlb); |
3280af22 | 3117 | PL_lex_brackstack = newlb; |
8990e307 LW |
3118 | } |
3119 | } | |
3280af22 | 3120 | switch (PL_expect) { |
a0d0e21e | 3121 | case XTERM: |
3280af22 | 3122 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3123 | s--; |
3124 | PRETERMBLOCK(DO); | |
3125 | } | |
3280af22 NIS |
3126 | if (PL_oldoldbufptr == PL_last_lop) |
3127 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3128 | else |
3280af22 | 3129 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3130 | OPERATOR(HASHBRACK); |
a0d0e21e | 3131 | case XOPERATOR: |
bf4acbe4 | 3132 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3133 | s++; |
44a8e56a | 3134 | d = s; |
3280af22 NIS |
3135 | PL_tokenbuf[0] = '\0'; |
3136 | if (d < PL_bufend && *d == '-') { | |
3137 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3138 | d++; |
bf4acbe4 | 3139 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3140 | d++; |
3141 | } | |
7e2040f0 | 3142 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3143 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3144 | FALSE, &len); |
bf4acbe4 | 3145 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3146 | d++; |
3147 | if (*d == '}') { | |
3280af22 | 3148 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3149 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3150 | if (minus) | |
3151 | force_next('-'); | |
748a9306 LW |
3152 | } |
3153 | } | |
3154 | /* FALL THROUGH */ | |
09bef843 | 3155 | case XATTRBLOCK: |
748a9306 | 3156 | case XBLOCK: |
3280af22 NIS |
3157 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3158 | PL_expect = XSTATE; | |
a0d0e21e | 3159 | break; |
09bef843 | 3160 | case XATTRTERM: |
a0d0e21e | 3161 | case XTERMBLOCK: |
3280af22 NIS |
3162 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3163 | PL_expect = XSTATE; | |
a0d0e21e LW |
3164 | break; |
3165 | default: { | |
3166 | char *t; | |
3280af22 NIS |
3167 | if (PL_oldoldbufptr == PL_last_lop) |
3168 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3169 | else |
3280af22 | 3170 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3171 | s = skipspace(s); |
8452ff4b SB |
3172 | if (*s == '}') { |
3173 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3174 | PL_expect = XTERM; | |
3175 | /* This hack is to get the ${} in the message. */ | |
3176 | PL_bufptr = s+1; | |
3177 | yyerror("syntax error"); | |
3178 | break; | |
3179 | } | |
a0d0e21e | 3180 | OPERATOR(HASHBRACK); |
8452ff4b | 3181 | } |
b8a4b1be GS |
3182 | /* This hack serves to disambiguate a pair of curlies |
3183 | * as being a block or an anon hash. Normally, expectation | |
3184 | * determines that, but in cases where we're not in a | |
3185 | * position to expect anything in particular (like inside | |
3186 | * eval"") we have to resolve the ambiguity. This code | |
3187 | * covers the case where the first term in the curlies is a | |
3188 | * quoted string. Most other cases need to be explicitly | |
3189 | * disambiguated by prepending a `+' before the opening | |
3190 | * curly in order to force resolution as an anon hash. | |
3191 | * | |
3192 | * XXX should probably propagate the outer expectation | |
3193 | * into eval"" to rely less on this hack, but that could | |
3194 | * potentially break current behavior of eval"". | |
3195 | * GSAR 97-07-21 | |
3196 | */ | |
3197 | t = s; | |
3198 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3199 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3200 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3201 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3202 | t++; | |
3203 | t++; | |
a0d0e21e | 3204 | } |
b8a4b1be | 3205 | else if (*s == 'q') { |
3280af22 | 3206 | if (++t < PL_bufend |
b8a4b1be | 3207 | && (!isALNUM(*t) |
3280af22 | 3208 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3209 | && !isALNUM(*t)))) |
3210 | { | |
b8a4b1be GS |
3211 | char *tmps; |
3212 | char open, close, term; | |
3213 | I32 brackets = 1; | |
3214 | ||
3280af22 | 3215 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3216 | t++; |
3217 | term = *t; | |
3218 | open = term; | |
3219 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3220 | term = tmps[5]; | |
3221 | close = term; | |
3222 | if (open == close) | |
3280af22 NIS |
3223 | for (t++; t < PL_bufend; t++) { |
3224 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3225 | t++; |
6d07e5e9 | 3226 | else if (*t == open) |
b8a4b1be GS |
3227 | break; |
3228 | } | |
3229 | else | |
3280af22 NIS |
3230 | for (t++; t < PL_bufend; t++) { |
3231 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3232 | t++; |
6d07e5e9 | 3233 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3234 | break; |
3235 | else if (*t == open) | |
3236 | brackets++; | |
3237 | } | |
3238 | } | |
3239 | t++; | |
a0d0e21e | 3240 | } |
7e2040f0 | 3241 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3242 | t += UTF8SKIP(t); |
7e2040f0 | 3243 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3244 | t += UTF8SKIP(t); |
a0d0e21e | 3245 | } |
3280af22 | 3246 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3247 | t++; |
b8a4b1be GS |
3248 | /* if comma follows first term, call it an anon hash */ |
3249 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3250 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3251 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3252 | OPERATOR(HASHBRACK); |
3280af22 | 3253 | if (PL_expect == XREF) |
4e4e412b | 3254 | PL_expect = XTERM; |
a0d0e21e | 3255 | else { |
3280af22 NIS |
3256 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3257 | PL_expect = XSTATE; | |
a0d0e21e | 3258 | } |
8990e307 | 3259 | } |
a0d0e21e | 3260 | break; |
463ee0b2 | 3261 | } |
57843af0 | 3262 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3263 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3264 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3265 | TOKEN('{'); |
378cc40b | 3266 | case '}': |
79072805 LW |
3267 | rightbracket: |
3268 | s++; | |
3280af22 | 3269 | if (PL_lex_brackets <= 0) |
d98d5fff | 3270 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3271 | else |
3280af22 | 3272 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3273 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3274 | PL_lex_formbrack = 0; |
3275 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3276 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3277 | if (PL_expect & XFAKEBRACK) { |
3278 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3279 | PL_lex_state = LEX_INTERPEND; |
3280 | PL_bufptr = s; | |
cea2e8a9 | 3281 | return yylex(); /* ignore fake brackets */ |
79072805 | 3282 | } |
fa83b5b6 | 3283 | if (*s == '-' && s[1] == '>') |
3280af22 | 3284 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3285 | else if (*s != '[' && *s != '{') |
3280af22 | 3286 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3287 | } |
3288 | } | |
9059aa12 LW |
3289 | if (PL_expect & XFAKEBRACK) { |
3290 | PL_expect &= XENUMMASK; | |
3280af22 | 3291 | PL_bufptr = s; |
cea2e8a9 | 3292 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3293 | } |
79072805 LW |
3294 | force_next('}'); |
3295 | TOKEN(';'); | |
378cc40b LW |
3296 | case '&': |
3297 | s++; | |
3298 | tmp = *s++; | |
3299 | if (tmp == '&') | |
a0d0e21e | 3300 | AOPERATOR(ANDAND); |
378cc40b | 3301 | s--; |
3280af22 | 3302 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3303 | if (ckWARN(WARN_SEMICOLON) |
3304 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3305 | { | |
57843af0 | 3306 | CopLINE_dec(PL_curcop); |
9014280d | 3307 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3308 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3309 | } |
79072805 | 3310 | BAop(OP_BIT_AND); |
463ee0b2 | 3311 | } |
79072805 | 3312 | |
3280af22 NIS |
3313 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3314 | if (*PL_tokenbuf) { | |
3315 | PL_expect = XOPERATOR; | |
3316 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3317 | } |
79072805 LW |
3318 | else |
3319 | PREREF('&'); | |
c07a80fd | 3320 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3321 | TERM('&'); |
3322 | ||
378cc40b LW |
3323 | case '|': |
3324 | s++; | |
3325 | tmp = *s++; | |
3326 | if (tmp == '|') | |
a0d0e21e | 3327 | AOPERATOR(OROR); |
378cc40b | 3328 | s--; |
79072805 | 3329 | BOop(OP_BIT_OR); |
378cc40b LW |
3330 | case '=': |
3331 | s++; | |
3332 | tmp = *s++; | |
3333 | if (tmp == '=') | |
79072805 LW |
3334 | Eop(OP_EQ); |
3335 | if (tmp == '>') | |
3336 | OPERATOR(','); | |
378cc40b | 3337 | if (tmp == '~') |
79072805 | 3338 | PMop(OP_MATCH); |
599cee73 | 3339 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
9014280d | 3340 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Reversed %c= operator",(int)tmp); |
378cc40b | 3341 | s--; |
3280af22 NIS |
3342 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3343 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3344 | { |
3280af22 NIS |
3345 | if (PL_in_eval && !PL_rsfp) { |
3346 | d = PL_bufend; | |
a5f75d66 AD |
3347 | while (s < d) { |
3348 | if (*s++ == '\n') { | |
3349 | incline(s); | |
3350 | if (strnEQ(s,"=cut",4)) { | |
3351 | s = strchr(s,'\n'); | |
3352 | if (s) | |
3353 | s++; | |
3354 | else | |
3355 | s = d; | |
3356 | incline(s); | |
3357 | goto retry; | |
3358 | } | |
3359 | } | |
3360 | } | |
3361 | goto retry; | |
3362 | } | |
3280af22 NIS |
3363 | s = PL_bufend; |
3364 | PL_doextract = TRUE; | |
a0d0e21e LW |
3365 | goto retry; |
3366 | } | |
3280af22 | 3367 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3368 | char *t; |
51882d45 | 3369 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3370 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3371 | #else |
bf4acbe4 | 3372 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3373 | #endif |
a0d0e21e LW |
3374 | if (*t == '\n' || *t == '#') { |
3375 | s--; | |
3280af22 | 3376 | PL_expect = XBLOCK; |
a0d0e21e LW |
3377 | goto leftbracket; |
3378 | } | |
79072805 | 3379 | } |
a0d0e21e LW |
3380 | yylval.ival = 0; |
3381 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3382 | case '!': |
3383 | s++; | |
3384 | tmp = *s++; | |
3385 | if (tmp == '=') | |
79072805 | 3386 | Eop(OP_NE); |
378cc40b | 3387 | if (tmp == '~') |
79072805 | 3388 | PMop(OP_NOT); |
378cc40b LW |
3389 | s--; |
3390 | OPERATOR('!'); | |
3391 | case '<': | |
3280af22 | 3392 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3393 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3394 | check_uni(); |
79072805 LW |
3395 | if (s[1] == '<') |
3396 | s = scan_heredoc(s); | |
3397 | else | |
3398 | s = scan_inputsymbol(s); | |
3399 | TERM(sublex_start()); | |
378cc40b LW |
3400 | } |
3401 | s++; | |
3402 | tmp = *s++; | |
3403 | if (tmp == '<') | |
79072805 | 3404 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3405 | if (tmp == '=') { |
3406 | tmp = *s++; | |
3407 | if (tmp == '>') | |
79072805 | 3408 | Eop(OP_NCMP); |
395c3793 | 3409 | s--; |
79072805 | 3410 | Rop(OP_LE); |
395c3793 | 3411 | } |
378cc40b | 3412 | s--; |
79072805 | 3413 | Rop(OP_LT); |
378cc40b LW |
3414 | case '>': |
3415 | s++; | |
3416 | tmp = *s++; | |
3417 | if (tmp == '>') | |
79072805 | 3418 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3419 | if (tmp == '=') |
79072805 | 3420 | Rop(OP_GE); |
378cc40b | 3421 | s--; |
79072805 | 3422 | Rop(OP_GT); |
378cc40b LW |
3423 | |
3424 | case '$': | |
bbce6d69 | 3425 | CLINE; |
3426 | ||
3280af22 NIS |
3427 | if (PL_expect == XOPERATOR) { |
3428 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3429 | PL_expect = XTERM; | |
a0d0e21e | 3430 | depcom(); |
bbce6d69 | 3431 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3432 | } |
8990e307 | 3433 | } |
a0d0e21e | 3434 | |
7e2040f0 | 3435 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3436 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3437 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3438 | sizeof PL_tokenbuf - 1, FALSE); | |
3439 | if (PL_expect == XOPERATOR) | |
3440 | no_op("Array length", s); | |
3280af22 | 3441 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3442 | PREREF(DOLSHARP); |
3280af22 NIS |
3443 | PL_expect = XOPERATOR; |
3444 | PL_pending_ident = '#'; | |
463ee0b2 | 3445 | TOKEN(DOLSHARP); |
79072805 | 3446 | } |
bbce6d69 | 3447 | |
3280af22 | 3448 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3449 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3450 | sizeof PL_tokenbuf - 1, FALSE); | |
3451 | if (PL_expect == XOPERATOR) | |
3452 | no_op("Scalar", s); | |
3280af22 NIS |
3453 | if (!PL_tokenbuf[1]) { |
3454 | if (s == PL_bufend) | |
bbce6d69 | 3455 | yyerror("Final $ should be \\$ or $name"); |
3456 | PREREF('$'); | |
8990e307 | 3457 | } |
a0d0e21e | 3458 | |
bbce6d69 | 3459 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3460 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3461 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3462 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3463 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3464 | TERM(THING); | |
3465 | } | |
3466 | ||
ff68c719 | 3467 | d = s; |
69d2bceb | 3468 | tmp = (I32)*s; |
3280af22 | 3469 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3470 | s = skipspace(s); |
3471 | ||
3280af22 | 3472 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3473 | char *t; |
3474 | if (*s == '[') { | |
3280af22 | 3475 | PL_tokenbuf[0] = '@'; |
599cee73 | 3476 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3477 | for(t = s + 1; |
7e2040f0 | 3478 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3479 | t++) ; |
a0d0e21e | 3480 | if (*t++ == ',') { |
3280af22 NIS |
3481 | PL_bufptr = skipspace(PL_bufptr); |
3482 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3483 | t++; |
9014280d | 3484 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 PM |
3485 | "Multidimensional syntax %.*s not supported", |
3486 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3487 | } |
3488 | } | |
bbce6d69 | 3489 | } |
3490 | else if (*s == '{') { | |
3280af22 | 3491 | PL_tokenbuf[0] = '%'; |
599cee73 | 3492 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3493 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3494 | { | |
3280af22 | 3495 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3496 | STRLEN len; |
3497 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3498 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3499 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3500 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3501 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
9014280d | 3502 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3503 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3504 | } |
93a17b20 LW |
3505 | } |
3506 | } | |
2f3197b3 | 3507 | } |
bbce6d69 | 3508 | |
3280af22 | 3509 | PL_expect = XOPERATOR; |
69d2bceb | 3510 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3511 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3512 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3513 | PL_expect = XOPERATOR; | |
bbce6d69 | 3514 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3515 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3516 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3517 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3518 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3519 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3520 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3521 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3522 | /* binary operators exclude handle interpretations */ |
3523 | switch (tmp) { | |
3524 | case -KEY_x: | |
3525 | case -KEY_eq: | |
3526 | case -KEY_ne: | |
3527 | case -KEY_gt: | |
3528 | case -KEY_lt: | |
3529 | case -KEY_ge: | |
3530 | case -KEY_le: | |
3531 | case -KEY_cmp: | |
3532 | break; | |
3533 | default: | |
3280af22 | 3534 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3535 | break; |
3536 | } | |
3537 | } | |
68dc0745 | 3538 | else { |
3539 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3540 | if (gv && GvCVu(gv)) | |
3280af22 | 3541 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3542 | } |
93a17b20 | 3543 | } |
bbce6d69 | 3544 | else if (isDIGIT(*s)) |
3280af22 | 3545 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3546 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3547 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
c963b151 BD |
3548 | else if (strchr("?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3549 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
3550 | else if (*s == '/') { | |
3551 | if(s[1] == '/') { | |
3552 | PL_expect=XOPERATOR; | |
3553 | } | |
3554 | else { | |
3555 | PL_expect=XTERM; | |
3556 | } | |
3557 | } | |
e0587a03 | 3558 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3559 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3560 | } |
3280af22 | 3561 | PL_pending_ident = '$'; |
79072805 | 3562 | TOKEN('$'); |
378cc40b LW |
3563 | |
3564 | case '@': | |
3280af22 | 3565 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3566 | no_op("Array", s); |
3280af22 NIS |
3567 | PL_tokenbuf[0] = '@'; |
3568 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3569 | if (!PL_tokenbuf[1]) { | |
3570 | if (s == PL_bufend) | |
bbce6d69 | 3571 | yyerror("Final @ should be \\@ or @name"); |
3572 | PREREF('@'); | |
3573 | } | |
3280af22 | 3574 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3575 | s = skipspace(s); |
3280af22 | 3576 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3577 | if (*s == '{') |
3280af22 | 3578 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3579 | |
3580 | /* Warn about @ where they meant $. */ | |
599cee73 | 3581 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3582 | if (*s == '[' || *s == '{') { |
3583 | char *t = s + 1; | |
7e2040f0 | 3584 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3585 | t++; |
3586 | if (*t == '}' || *t == ']') { | |
3587 | t++; | |
3280af22 | 3588 | PL_bufptr = skipspace(PL_bufptr); |
9014280d | 3589 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3590 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3591 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3592 | } |
93a17b20 LW |
3593 | } |
3594 | } | |
463ee0b2 | 3595 | } |
3280af22 | 3596 | PL_pending_ident = '@'; |
79072805 | 3597 | TERM('@'); |
378cc40b | 3598 | |
c963b151 BD |
3599 | case '/': /* may be division, defined-or, or pattern */ |
3600 | case '?': /* may either be conditional or pattern */ | |
3601 | if(PL_expect == XOPERATOR) { | |
3602 | tmp = *s++; | |
3603 | if(tmp == '?') { | |
3604 | OPERATOR('?'); | |
3605 | } | |
3606 | else { | |
3607 | tmp = *s++; | |
3608 | if(tmp == '/') { | |
3609 | /* A // operator. */ | |
3610 | AOPERATOR(DORDOR); | |
3611 | } | |
3612 | else { | |
3613 | s--; | |
3614 | Mop(OP_DIVIDE); | |
3615 | } | |
3616 | } | |
3617 | } | |
3618 | else { | |
3619 | /* Disable warning on "study /blah/" */ | |
3620 | if (PL_oldoldbufptr == PL_last_uni | |
3621 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
3622 | || memNE(PL_last_uni, "study", 5) | |
3623 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
3624 | )) | |
3625 | check_uni(); | |
3626 | s = scan_pat(s,OP_MATCH); | |
3627 | TERM(sublex_start()); | |
3628 | } | |
378cc40b LW |
3629 | |
3630 | case '.': | |
51882d45 GS |
3631 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3632 | #ifdef PERL_STRICT_CR | |
3633 | && s[1] == '\n' | |
3634 | #else | |
3635 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3636 | #endif | |
3637 | && (s == PL_linestart || s[-1] == '\n') ) | |
3638 | { | |
3280af22 NIS |
3639 | PL_lex_formbrack = 0; |
3640 | PL_expect = XSTATE; | |
79072805 LW |
3641 | goto rightbracket; |
3642 | } | |
3280af22 | 3643 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3644 | tmp = *s++; |
a687059c LW |
3645 | if (*s == tmp) { |
3646 | s++; | |
2f3197b3 LW |
3647 | if (*s == tmp) { |
3648 | s++; | |
79072805 | 3649 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3650 | } |
3651 | else | |
79072805 | 3652 | yylval.ival = 0; |
378cc40b | 3653 | OPERATOR(DOTDOT); |
a687059c | 3654 | } |
3280af22 | 3655 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3656 | check_uni(); |
79072805 | 3657 | Aop(OP_CONCAT); |
378cc40b LW |
3658 | } |
3659 | /* FALL THROUGH */ | |
3660 | case '0': case '1': case '2': case '3': case '4': | |
3661 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3662 | s = scan_num(s, &yylval); |
4e553d73 | 3663 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3664 | "### Saw number in '%s'\n", s); |
5f80b19c | 3665 | } ); |
3280af22 | 3666 | if (PL_expect == XOPERATOR) |
8990e307 | 3667 | no_op("Number",s); |
79072805 LW |
3668 | TERM(THING); |
3669 | ||
3670 | case '\'': | |
09bef843 | 3671 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3672 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3673 | "### Saw string before '%s'\n", s); |
5f80b19c | 3674 | } ); |
3280af22 NIS |
3675 | if (PL_expect == XOPERATOR) { |
3676 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3677 | PL_expect = XTERM; | |
a0d0e21e LW |
3678 | depcom(); |
3679 | return ','; /* grandfather non-comma-format format */ | |
3680 | } | |
463ee0b2 | 3681 | else |
8990e307 | 3682 | no_op("String",s); |
463ee0b2 | 3683 | } |
79072805 | 3684 | if (!s) |
85e6fe83 | 3685 | missingterm((char*)0); |
79072805 LW |
3686 | yylval.ival = OP_CONST; |
3687 | TERM(sublex_start()); | |
3688 | ||
3689 | case '"': | |
09bef843 | 3690 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3691 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3692 | "### Saw string before '%s'\n", s); |
5f80b19c | 3693 | } ); |
3280af22 NIS |
3694 | if (PL_expect == XOPERATOR) { |
3695 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3696 | PL_expect = XTERM; | |
a0d0e21e LW |
3697 | depcom(); |
3698 | return ','; /* grandfather non-comma-format format */ | |
3699 | } | |
463ee0b2 | 3700 | else |
8990e307 | 3701 | no_op("String",s); |
463ee0b2 | 3702 | } |
79072805 | 3703 | if (!s) |
85e6fe83 | 3704 | missingterm((char*)0); |
4633a7c4 | 3705 | yylval.ival = OP_CONST; |
3280af22 | 3706 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3707 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3708 | yylval.ival = OP_STRINGIFY; |
3709 | break; | |
3710 | } | |
3711 | } | |
79072805 LW |
3712 | TERM(sublex_start()); |
3713 | ||
3714 | case '`': | |
09bef843 | 3715 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3716 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3717 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3718 | } ); |
3280af22 | 3719 | if (PL_expect == XOPERATOR) |
8990e307 | 3720 | no_op("Backticks",s); |
79072805 | 3721 | if (!s) |
85e6fe83 | 3722 | missingterm((char*)0); |
79072805 LW |
3723 | yylval.ival = OP_BACKTICK; |
3724 | set_csh(); | |
3725 | TERM(sublex_start()); | |
3726 | ||
3727 | case '\\': | |
3728 | s++; | |
599cee73 | 3729 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
9014280d | 3730 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", |
599cee73 | 3731 | *s, *s); |
3280af22 | 3732 | if (PL_expect == XOPERATOR) |
8990e307 | 3733 | no_op("Backslash",s); |
79072805 LW |
3734 | OPERATOR(REFGEN); |
3735 | ||
a7cb1f99 | 3736 | case 'v': |
e526c9e6 | 3737 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3738 | char *start = s; |
3739 | start++; | |
3740 | start++; | |
dd629d5b | 3741 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3742 | start++; |
3743 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3744 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3745 | TERM(THING); |
3746 | } | |
e526c9e6 | 3747 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
62ec34bd | 3748 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF || PL_expect == XSTATE)) { |
e526c9e6 GS |
3749 | char c = *start; |
3750 | GV *gv; | |
3751 | *start = '\0'; | |
3752 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3753 | *start = c; | |
3754 | if (!gv) { | |
b73d6f50 | 3755 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3756 | TERM(THING); |
3757 | } | |
3758 | } | |
a7cb1f99 GS |
3759 | } |
3760 | goto keylookup; | |
79072805 | 3761 | case 'x': |
3280af22 | 3762 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3763 | s++; |
3764 | Mop(OP_REPEAT); | |
2f3197b3 | 3765 | } |
79072805 LW |
3766 | goto keylookup; |
3767 | ||
378cc40b | 3768 | case '_': |
79072805 LW |
3769 | case 'a': case 'A': |
3770 | case 'b': case 'B': | |
3771 | case 'c': case 'C': | |
3772 | case 'd': case 'D': | |
3773 | case 'e': case 'E': | |
3774 | case 'f': case 'F': | |
3775 | case 'g': case 'G': | |
3776 | case 'h': case 'H': | |
3777 | case 'i': case 'I': | |
3778 | case 'j': case 'J': | |
3779 | case 'k': case 'K': | |
3780 | case 'l': case 'L': | |
3781 | case 'm': case 'M': | |
3782 | case 'n': case 'N': | |
3783 | case 'o': case 'O': | |
3784 | case 'p': case 'P': | |
3785 | case 'q': case 'Q': | |
3786 | case 'r': case 'R': | |
3787 | case 's': case 'S': | |
3788 | case 't': case 'T': | |
3789 | case 'u': case 'U': | |
a7cb1f99 | 3790 | case 'V': |
79072805 LW |
3791 | case 'w': case 'W': |
3792 | case 'X': | |
3793 | case 'y': case 'Y': | |
3794 | case 'z': case 'Z': | |
3795 | ||
49dc05e3 | 3796 | keylookup: { |
161b471a NIS |
3797 | gv = Nullgv; |
3798 | gvp = 0; | |
49dc05e3 | 3799 | |
3280af22 NIS |
3800 | PL_bufptr = s; |
3801 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3802 | |
3803 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3804 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3805 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3806 | (PL_tokenbuf[0] == 'q' && | |
3807 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3808 | |
3809 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3810 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3811 | goto just_a_word; |
3812 | ||
3643fb5f | 3813 | d = s; |
3280af22 | 3814 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3815 | d++; /* no comments skipped here, or s### is misparsed */ |
3816 | ||
3817 | /* Is this a label? */ | |
3280af22 NIS |
3818 | if (!tmp && PL_expect == XSTATE |
3819 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3820 | s = d + 1; |
3280af22 | 3821 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3822 | CLINE; |
3823 | TOKEN(LABEL); | |
3643fb5f CS |
3824 | } |
3825 | ||
3826 | /* Check for keywords */ | |
3280af22 | 3827 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3828 | |
3829 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3830 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3831 | CLINE; |
3280af22 | 3832 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 3833 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 3834 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3835 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
3836 | TERM(WORD); |
3837 | } | |
3838 | ||
a0d0e21e | 3839 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3840 | GV *ogv = Nullgv; /* override (winner) */ |
3841 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3842 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3843 | CV *cv; |
3280af22 | 3844 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3845 | (cv = GvCVu(gv))) |
3846 | { | |
3847 | if (GvIMPORTED_CV(gv)) | |
3848 | ogv = gv; | |
3849 | else if (! CvMETHOD(cv)) | |
3850 | hgv = gv; | |
3851 | } | |
3852 | if (!ogv && | |
3280af22 NIS |
3853 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3854 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3855 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3856 | { | |
3857 | ogv = gv; | |
3858 | } | |
3859 | } | |
3860 | if (ogv) { | |
3861 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3862 | } |
3863 | else if (gv && !gvp | |
3864 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3865 | && GvCVu(gv) |
3280af22 | 3866 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3867 | { |
3868 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3869 | } |
56f7f34b CS |
3870 | else { /* no override */ |
3871 | tmp = -tmp; | |
ac206dc8 | 3872 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
9014280d | 3873 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
ac206dc8 RGS |
3874 | "dump() better written as CORE::dump()"); |
3875 | } | |
56f7f34b CS |
3876 | gv = Nullgv; |
3877 | gvp = 0; | |
4944e2f7 GS |
3878 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3879 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
9014280d | 3880 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 3881 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3882 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3883 | } |
a0d0e21e LW |
3884 | } |
3885 | ||
3886 | reserved_word: | |
3887 | switch (tmp) { | |
79072805 LW |
3888 | |
3889 | default: /* not a keyword */ | |
93a17b20 | 3890 | just_a_word: { |
96e4d5b1 | 3891 | SV *sv; |
ce29ac45 | 3892 | int pkgname = 0; |
3280af22 | 3893 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3894 | |
3895 | /* Get the rest if it looks like a package qualifier */ | |
3896 | ||
155aba94 | 3897 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3898 | STRLEN morelen; |
3280af22 | 3899 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3900 | TRUE, &morelen); |
3901 | if (!morelen) | |
cea2e8a9 | 3902 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3903 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3904 | len += morelen; |
ce29ac45 | 3905 | pkgname = 1; |
a0d0e21e | 3906 | } |
8990e307 | 3907 | |
3280af22 NIS |
3908 | if (PL_expect == XOPERATOR) { |
3909 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3910 | CopLINE_dec(PL_curcop); |
9014280d | 3911 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3912 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3913 | } |
3914 | else | |
54310121 | 3915 | no_op("Bareword",s); |
463ee0b2 | 3916 | } |
8990e307 | 3917 | |
c3e0f903 GS |
3918 | /* Look for a subroutine with this name in current package, |
3919 | unless name is "Foo::", in which case Foo is a bearword | |
3920 | (and a package name). */ | |
3921 | ||
3922 | if (len > 2 && | |
3280af22 | 3923 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3924 | { |
e476b1b5 | 3925 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
9014280d | 3926 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 3927 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3928 | PL_tokenbuf); |
c3e0f903 | 3929 | len -= 2; |
3280af22 | 3930 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3931 | gv = Nullgv; |
3932 | gvp = 0; | |
3933 | } | |
3934 | else { | |
3935 | len = 0; | |
3936 | if (!gv) | |
3280af22 | 3937 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3938 | } |
3939 | ||
3940 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3941 | |
49dc05e3 | 3942 | if (gvp) { |
79cb57f6 | 3943 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3944 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3945 | } |
3946 | else | |
3280af22 | 3947 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3948 | |
a0d0e21e LW |
3949 | /* Presume this is going to be a bareword of some sort. */ |
3950 | ||
3951 | CLINE; | |
49dc05e3 | 3952 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e | 3953 | yylval.opval->op_private = OPpCONST_BARE; |
8f8cf39c JH |
3954 | /* UTF-8 package name? */ |
3955 | if (UTF && !IN_BYTES && | |
3956 | is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
3957 | SvUTF8_on(sv); | |
a0d0e21e | 3958 | |
c3e0f903 GS |
3959 | /* And if "Foo::", then that's what it certainly is. */ |
3960 | ||
3961 | if (len) | |
3962 | goto safe_bareword; | |
3963 | ||
8990e307 LW |
3964 | /* See if it's the indirect object for a list operator. */ |
3965 | ||
3280af22 NIS |
3966 | if (PL_oldoldbufptr && |
3967 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3968 | (PL_oldoldbufptr == PL_last_lop |
3969 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3970 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3971 | (PL_expect == XREF || |
3972 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3973 | { |
748a9306 LW |
3974 | bool immediate_paren = *s == '('; |
3975 | ||
a0d0e21e LW |
3976 | /* (Now we can afford to cross potential line boundary.) */ |
3977 | s = skipspace(s); | |
3978 | ||
3979 | /* Two barewords in a row may indicate method call. */ | |
3980 | ||
7e2040f0 | 3981 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3982 | return tmp; |
3983 | ||
3984 | /* If not a declared subroutine, it's an indirect object. */ | |
3985 | /* (But it's an indir obj regardless for sort.) */ | |
3986 | ||
7948272d | 3987 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 3988 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 3989 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 3990 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 3991 | { |
3280af22 | 3992 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3993 | goto bareword; |
93a17b20 LW |
3994 | } |
3995 | } | |
8990e307 | 3996 | |
3280af22 | 3997 | PL_expect = XOPERATOR; |
8990e307 | 3998 | s = skipspace(s); |
1c3923b3 GS |
3999 | |
4000 | /* Is this a word before a => operator? */ | |
ce29ac45 | 4001 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
4002 | CLINE; |
4003 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 4004 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4005 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
4006 | TERM(WORD); |
4007 | } | |
4008 | ||
4009 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 4010 | if (*s == '(') { |
79072805 | 4011 | CLINE; |
96e4d5b1 | 4012 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 4013 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 4014 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 4015 | s = d + 1; |
4016 | goto its_constant; | |
4017 | } | |
4018 | } | |
3280af22 NIS |
4019 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4020 | PL_expect = XOPERATOR; | |
93a17b20 | 4021 | force_next(WORD); |
c07a80fd | 4022 | yylval.ival = 0; |
463ee0b2 | 4023 | TOKEN('&'); |
79072805 | 4024 | } |
93a17b20 | 4025 | |
a0d0e21e | 4026 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 4027 | |
8ebc5c01 | 4028 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
4029 | PL_last_lop = PL_oldbufptr; |
4030 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 4031 | PREBLOCK(METHOD); |
463ee0b2 LW |
4032 | } |
4033 | ||
8990e307 LW |
4034 | /* If followed by a bareword, see if it looks like indir obj. */ |
4035 | ||
7e2040f0 | 4036 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 4037 | return tmp; |
93a17b20 | 4038 | |
8990e307 LW |
4039 | /* Not a method, so call it a subroutine (if defined) */ |
4040 | ||
8ebc5c01 | 4041 | if (gv && GvCVu(gv)) { |
46fc3d4c | 4042 | CV* cv; |
0453d815 | 4043 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
9014280d | 4044 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4045 | "Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 4046 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 4047 | /* Check for a constant sub */ |
46fc3d4c | 4048 | cv = GvCV(gv); |
96e4d5b1 | 4049 | if ((sv = cv_const_sv(cv))) { |
4050 | its_constant: | |
4051 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4052 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4053 | yylval.opval->op_private = 0; | |
4054 | TOKEN(WORD); | |
89bfa8cd | 4055 | } |
4056 | ||
a5f75d66 AD |
4057 | /* Resolve to GV now. */ |
4058 | op_free(yylval.opval); | |
4059 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4060 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4061 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4062 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4063 | /* Is there a prototype? */ |
4064 | if (SvPOK(cv)) { | |
4065 | STRLEN len; | |
7a52d87a | 4066 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4067 | if (!len) |
4068 | TERM(FUNC0SUB); | |
7a52d87a | 4069 | if (strEQ(proto, "$")) |
4633a7c4 | 4070 | OPERATOR(UNIOPSUB); |
7a52d87a | 4071 | if (*proto == '&' && *s == '{') { |
c99da370 JH |
4072 | sv_setpv(PL_subname, PL_curstash ? |
4073 | "__ANON__" : "__ANON__::__ANON__"); | |
4633a7c4 LW |
4074 | PREBLOCK(LSTOPSUB); |
4075 | } | |
a9ef352a | 4076 | } |
3280af22 NIS |
4077 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4078 | PL_expect = XTERM; | |
8990e307 LW |
4079 | force_next(WORD); |
4080 | TOKEN(NOAMP); | |
4081 | } | |
748a9306 | 4082 | |
8990e307 LW |
4083 | /* Call it a bare word */ |
4084 | ||
5603f27d GS |
4085 | if (PL_hints & HINT_STRICT_SUBS) |
4086 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4087 | else { | |
4088 | bareword: | |
4089 | if (ckWARN(WARN_RESERVED)) { | |
4090 | if (lastchar != '-') { | |
4091 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
238ae712 | 4092 | if (!*d && !gv_stashpv(PL_tokenbuf,FALSE)) |
9014280d | 4093 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
4094 | PL_tokenbuf); |
4095 | } | |
748a9306 LW |
4096 | } |
4097 | } | |
c3e0f903 GS |
4098 | |
4099 | safe_bareword: | |
f248d071 | 4100 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
9014280d | 4101 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4102 | "Operator or semicolon missing before %c%s", |
3280af22 | 4103 | lastchar, PL_tokenbuf); |
9014280d | 4104 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4105 | "Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
4106 | lastchar, lastchar); |
4107 | } | |
93a17b20 | 4108 | TOKEN(WORD); |
79072805 | 4109 | } |
79072805 | 4110 | |
68dc0745 | 4111 | case KEY___FILE__: |
46fc3d4c | 4112 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4113 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4114 | TERM(THING); |
4115 | ||
79072805 | 4116 | case KEY___LINE__: |
cf2093f6 | 4117 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4118 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4119 | TERM(THING); |
68dc0745 | 4120 | |
4121 | case KEY___PACKAGE__: | |
4122 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
4123 | (PL_curstash |
4124 | ? newSVsv(PL_curstname) | |
4125 | : &PL_sv_undef)); | |
79072805 | 4126 | TERM(THING); |
79072805 | 4127 | |
e50aee73 | 4128 | case KEY___DATA__: |
79072805 LW |
4129 | case KEY___END__: { |
4130 | GV *gv; | |
79072805 LW |
4131 | |
4132 | /*SUPPRESS 560*/ | |
3280af22 | 4133 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4134 | char *pname = "main"; |
3280af22 NIS |
4135 | if (PL_tokenbuf[2] == 'D') |
4136 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4137 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4138 | GvMULTI_on(gv); |
79072805 | 4139 | if (!GvIO(gv)) |
a0d0e21e | 4140 | GvIOp(gv) = newIO(); |
3280af22 | 4141 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4142 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4143 | { | |
3280af22 | 4144 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4145 | fcntl(fd,F_SETFD,fd >= 3); |
4146 | } | |
79072805 | 4147 | #endif |
fd049845 | 4148 | /* Mark this internal pseudo-handle as clean */ |
4149 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4150 | if (PL_preprocess) |
50952442 | 4151 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4152 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4153 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4154 | else |
50952442 | 4155 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4156 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4157 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4158 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4159 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4160 | if (PL_bufend-PL_bufptr > 2 |
4161 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4162 | { |
4163 | Off_t loc = 0; | |
50952442 | 4164 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4165 | loc = PerlIO_tell(PL_rsfp); |
4166 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4167 | } | |
2986a63f JH |
4168 | #ifdef NETWARE |
4169 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4170 | #else | |
c39cd008 | 4171 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4172 | #endif /* NETWARE */ |
1143fce0 JH |
4173 | #ifdef PERLIO_IS_STDIO /* really? */ |
4174 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4175 | /* XXX see note in do_binmode() */ |
4176 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4177 | # endif |
4178 | #endif | |
c39cd008 GS |
4179 | if (loc > 0) |
4180 | PerlIO_seek(PL_rsfp, loc, 0); | |
4181 | } | |
4182 | } | |
4183 | #endif | |
7948272d | 4184 | #ifdef PERLIO_LAYERS |
0064a8a9 | 4185 | if (UTF && !IN_BYTES) |
7948272d NIS |
4186 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); |
4187 | #endif | |
3280af22 | 4188 | PL_rsfp = Nullfp; |
79072805 LW |
4189 | } |
4190 | goto fake_eof; | |
e929a76b | 4191 | } |
de3bb511 | 4192 | |
8990e307 | 4193 | case KEY_AUTOLOAD: |
ed6116ce | 4194 | case KEY_DESTROY: |
79072805 | 4195 | case KEY_BEGIN: |
7d30b5c4 | 4196 | case KEY_CHECK: |
7d07dbc2 | 4197 | case KEY_INIT: |
7d30b5c4 | 4198 | case KEY_END: |
3280af22 NIS |
4199 | if (PL_expect == XSTATE) { |
4200 | s = PL_bufptr; | |
93a17b20 | 4201 | goto really_sub; |
79072805 LW |
4202 | } |
4203 | goto just_a_word; | |
4204 | ||
a0d0e21e LW |
4205 | case KEY_CORE: |
4206 | if (*s == ':' && s[1] == ':') { | |
4207 | s += 2; | |
748a9306 | 4208 | d = s; |
3280af22 | 4209 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4210 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4211 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4212 | if (tmp < 0) |
4213 | tmp = -tmp; | |
4214 | goto reserved_word; | |
4215 | } | |
4216 | goto just_a_word; | |
4217 | ||
463ee0b2 LW |
4218 | case KEY_abs: |
4219 | UNI(OP_ABS); | |
4220 | ||
79072805 LW |
4221 | case KEY_alarm: |
4222 | UNI(OP_ALARM); | |
4223 | ||
4224 | case KEY_accept: | |
a0d0e21e | 4225 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4226 | |
463ee0b2 LW |
4227 | case KEY_and: |
4228 | OPERATOR(ANDOP); | |
4229 | ||
79072805 | 4230 | case KEY_atan2: |
a0d0e21e | 4231 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4232 | |
79072805 | 4233 | case KEY_bind: |
a0d0e21e | 4234 | LOP(OP_BIND,XTERM); |
79072805 LW |
4235 | |
4236 | case KEY_binmode: | |
1c1fc3ea | 4237 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4238 | |
4239 | case KEY_bless: | |
a0d0e21e | 4240 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4241 | |
4242 | case KEY_chop: | |
4243 | UNI(OP_CHOP); | |
4244 | ||
4245 | case KEY_continue: | |
4246 | PREBLOCK(CONTINUE); | |
4247 | ||
4248 | case KEY_chdir: | |
85e6fe83 | 4249 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4250 | UNI(OP_CHDIR); |
4251 | ||
4252 | case KEY_close: | |
4253 | UNI(OP_CLOSE); | |
4254 | ||
4255 | case KEY_closedir: | |
4256 | UNI(OP_CLOSEDIR); | |
4257 | ||
4258 | case KEY_cmp: | |
4259 | Eop(OP_SCMP); | |
4260 | ||
4261 | case KEY_caller: | |
4262 | UNI(OP_CALLER); | |
4263 | ||
4264 | case KEY_crypt: | |
4265 | #ifdef FCRYPT | |
f4c556ac GS |
4266 | if (!PL_cryptseen) { |
4267 | PL_cryptseen = TRUE; | |
de3bb511 | 4268 | init_des(); |
f4c556ac | 4269 | } |
a687059c | 4270 | #endif |
a0d0e21e | 4271 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4272 | |
4273 | case KEY_chmod: | |
a0d0e21e | 4274 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4275 | |
4276 | case KEY_chown: | |
a0d0e21e | 4277 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4278 | |
4279 | case KEY_connect: | |
a0d0e21e | 4280 | LOP(OP_CONNECT,XTERM); |
79072805 | 4281 | |
463ee0b2 LW |
4282 | case KEY_chr: |
4283 | UNI(OP_CHR); | |
4284 | ||
79072805 LW |
4285 | case KEY_cos: |
4286 | UNI(OP_COS); | |
4287 | ||
4288 | case KEY_chroot: | |
4289 | UNI(OP_CHROOT); | |
4290 | ||
4291 | case KEY_do: | |
4292 | s = skipspace(s); | |
4293 | if (*s == '{') | |
a0d0e21e | 4294 | PRETERMBLOCK(DO); |
79072805 | 4295 | if (*s != '\'') |
89c5585f | 4296 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4297 | OPERATOR(DO); |
79072805 LW |
4298 | |
4299 | case KEY_die: | |
3280af22 | 4300 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4301 | LOP(OP_DIE,XTERM); |
79072805 LW |
4302 | |
4303 | case KEY_defined: | |
4304 | UNI(OP_DEFINED); | |
4305 | ||
4306 | case KEY_delete: | |
a0d0e21e | 4307 | UNI(OP_DELETE); |
79072805 LW |
4308 | |
4309 | case KEY_dbmopen: | |
a0d0e21e LW |
4310 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4311 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4312 | |
4313 | case KEY_dbmclose: | |
4314 | UNI(OP_DBMCLOSE); | |
4315 | ||
4316 | case KEY_dump: | |
a0d0e21e | 4317 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4318 | LOOPX(OP_DUMP); |
4319 | ||
4320 | case KEY_else: | |
4321 | PREBLOCK(ELSE); | |
4322 | ||
4323 | case KEY_elsif: | |
57843af0 | 4324 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4325 | OPERATOR(ELSIF); |
4326 | ||
4327 | case KEY_eq: | |
4328 | Eop(OP_SEQ); | |
4329 | ||
a0d0e21e LW |
4330 | case KEY_exists: |
4331 | UNI(OP_EXISTS); | |
4e553d73 | 4332 | |
79072805 LW |
4333 | case KEY_exit: |
4334 | UNI(OP_EXIT); | |
4335 | ||
4336 | case KEY_eval: | |
79072805 | 4337 | s = skipspace(s); |
3280af22 | 4338 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4339 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4340 | |
4341 | case KEY_eof: | |
4342 | UNI(OP_EOF); | |
4343 | ||
c963b151 BD |
4344 | case KEY_err: |
4345 | OPERATOR(DOROP); | |
4346 | ||
79072805 LW |
4347 | case KEY_exp: |
4348 | UNI(OP_EXP); | |
4349 | ||
4350 | case KEY_each: | |
4351 | UNI(OP_EACH); | |
4352 | ||
4353 | case KEY_exec: | |
4354 | set_csh(); | |
a0d0e21e | 4355 | LOP(OP_EXEC,XREF); |
79072805 LW |
4356 | |
4357 | case KEY_endhostent: | |
4358 | FUN0(OP_EHOSTENT); | |
4359 | ||
4360 | case KEY_endnetent: | |
4361 | FUN0(OP_ENETENT); | |
4362 | ||
4363 | case KEY_endservent: | |
4364 | FUN0(OP_ESERVENT); | |
4365 | ||
4366 | case KEY_endprotoent: | |
4367 | FUN0(OP_EPROTOENT); | |
4368 | ||
4369 | case KEY_endpwent: | |
4370 | FUN0(OP_EPWENT); | |
4371 | ||
4372 | case KEY_endgrent: | |
4373 | FUN0(OP_EGRENT); | |
4374 | ||
4375 | case KEY_for: | |
4376 | case KEY_foreach: | |
57843af0 | 4377 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4378 | s = skipspace(s); |
7e2040f0 | 4379 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4380 | char *p = s; |
3280af22 | 4381 | if ((PL_bufend - p) >= 3 && |
55497cff | 4382 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4383 | p += 2; | |
77ca0c92 LW |
4384 | else if ((PL_bufend - p) >= 4 && |
4385 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4386 | p += 3; | |
55497cff | 4387 | p = skipspace(p); |
7e2040f0 | 4388 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4389 | p = scan_ident(p, PL_bufend, |
4390 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4391 | p = skipspace(p); | |
4392 | } | |
4393 | if (*p != '$') | |
cea2e8a9 | 4394 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4395 | } |
79072805 LW |
4396 | OPERATOR(FOR); |
4397 | ||
4398 | case KEY_formline: | |
a0d0e21e | 4399 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4400 | |
4401 | case KEY_fork: | |
4402 | FUN0(OP_FORK); | |
4403 | ||
4404 | case KEY_fcntl: | |
a0d0e21e | 4405 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4406 | |
4407 | case KEY_fileno: | |
4408 | UNI(OP_FILENO); | |
4409 | ||
4410 | case KEY_flock: | |
a0d0e21e | 4411 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4412 | |
4413 | case KEY_gt: | |
4414 | Rop(OP_SGT); | |
4415 | ||
4416 | case KEY_ge: | |
4417 | Rop(OP_SGE); | |
4418 | ||
4419 | case KEY_grep: | |
2c38e13d | 4420 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4421 | |
4422 | case KEY_goto: | |
a0d0e21e | 4423 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4424 | LOOPX(OP_GOTO); |
4425 | ||
4426 | case KEY_gmtime: | |
4427 | UNI(OP_GMTIME); | |
4428 | ||
4429 | case KEY_getc: | |
4430 | UNI(OP_GETC); | |
4431 | ||
4432 | case KEY_getppid: | |
4433 | FUN0(OP_GETPPID); | |
4434 | ||
4435 | case KEY_getpgrp: | |
4436 | UNI(OP_GETPGRP); | |
4437 | ||
4438 | case KEY_getpriority: | |
a0d0e21e | 4439 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4440 | |
4441 | case KEY_getprotobyname: | |
4442 | UNI(OP_GPBYNAME); | |
4443 | ||
4444 | case KEY_getprotobynumber: | |
a0d0e21e | 4445 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4446 | |
4447 | case KEY_getprotoent: | |
4448 | FUN0(OP_GPROTOENT); | |
4449 | ||
4450 | case KEY_getpwent: | |
4451 | FUN0(OP_GPWENT); | |
4452 | ||
4453 | case KEY_getpwnam: | |
ff68c719 | 4454 | UNI(OP_GPWNAM); |
79072805 LW |
4455 | |
4456 | case KEY_getpwuid: | |
ff68c719 | 4457 | UNI(OP_GPWUID); |
79072805 LW |
4458 | |
4459 | case KEY_getpeername: | |
4460 | UNI(OP_GETPEERNAME); | |
4461 | ||
4462 | case KEY_gethostbyname: | |
4463 | UNI(OP_GHBYNAME); | |
4464 | ||
4465 | case KEY_gethostbyaddr: | |
a0d0e21e | 4466 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4467 | |
4468 | case KEY_gethostent: | |
4469 | FUN0(OP_GHOSTENT); | |
4470 | ||
4471 | case KEY_getnetbyname: | |
4472 | UNI(OP_GNBYNAME); | |
4473 | ||
4474 | case KEY_getnetbyaddr: | |
a0d0e21e | 4475 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4476 | |
4477 | case KEY_getnetent: | |
4478 | FUN0(OP_GNETENT); | |
4479 | ||
4480 | case KEY_getservbyname: | |
a0d0e21e | 4481 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4482 | |
4483 | case KEY_getservbyport: | |
a0d0e21e | 4484 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4485 | |
4486 | case KEY_getservent: | |
4487 | FUN0(OP_GSERVENT); | |
4488 | ||
4489 | case KEY_getsockname: | |
4490 | UNI(OP_GETSOCKNAME); | |
4491 | ||
4492 | case KEY_getsockopt: | |
a0d0e21e | 4493 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4494 | |
4495 | case KEY_getgrent: | |
4496 | FUN0(OP_GGRENT); | |
4497 | ||
4498 | case KEY_getgrnam: | |
ff68c719 | 4499 | UNI(OP_GGRNAM); |
79072805 LW |
4500 | |
4501 | case KEY_getgrgid: | |
ff68c719 | 4502 | UNI(OP_GGRGID); |
79072805 LW |
4503 | |
4504 | case KEY_getlogin: | |
4505 | FUN0(OP_GETLOGIN); | |
4506 | ||
93a17b20 | 4507 | case KEY_glob: |
a0d0e21e LW |
4508 | set_csh(); |
4509 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4510 | |
79072805 LW |
4511 | case KEY_hex: |
4512 | UNI(OP_HEX); | |
4513 | ||
4514 | case KEY_if: | |
57843af0 | 4515 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4516 | OPERATOR(IF); |
4517 | ||
4518 | case KEY_index: | |
a0d0e21e | 4519 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4520 | |
4521 | case KEY_int: | |
4522 | UNI(OP_INT); | |
4523 | ||
4524 | case KEY_ioctl: | |
a0d0e21e | 4525 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4526 | |
4527 | case KEY_join: | |
a0d0e21e | 4528 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4529 | |
4530 | case KEY_keys: | |
4531 | UNI(OP_KEYS); | |
4532 | ||
4533 | case KEY_kill: | |
a0d0e21e | 4534 | LOP(OP_KILL,XTERM); |
79072805 LW |
4535 | |
4536 | case KEY_last: | |
a0d0e21e | 4537 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4538 | LOOPX(OP_LAST); |
4e553d73 | 4539 | |
79072805 LW |
4540 | case KEY_lc: |
4541 | UNI(OP_LC); | |
4542 | ||
4543 | case KEY_lcfirst: | |
4544 | UNI(OP_LCFIRST); | |
4545 | ||
4546 | case KEY_local: | |
09bef843 | 4547 | yylval.ival = 0; |
79072805 LW |
4548 | OPERATOR(LOCAL); |
4549 | ||
4550 | case KEY_length: | |
4551 | UNI(OP_LENGTH); | |
4552 | ||
4553 | case KEY_lt: | |
4554 | Rop(OP_SLT); | |
4555 | ||
4556 | case KEY_le: | |
4557 | Rop(OP_SLE); | |
4558 | ||
4559 | case KEY_localtime: | |
4560 | UNI(OP_LOCALTIME); | |
4561 | ||
4562 | case KEY_log: | |
4563 | UNI(OP_LOG); | |
4564 | ||
4565 | case KEY_link: | |
a0d0e21e | 4566 | LOP(OP_LINK,XTERM); |
79072805 LW |
4567 | |
4568 | case KEY_listen: | |
a0d0e21e | 4569 | LOP(OP_LISTEN,XTERM); |
79072805 | 4570 | |
c0329465 MB |
4571 | case KEY_lock: |
4572 | UNI(OP_LOCK); | |
4573 | ||
79072805 LW |
4574 | case KEY_lstat: |
4575 | UNI(OP_LSTAT); | |
4576 | ||
4577 | case KEY_m: | |
8782bef2 | 4578 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4579 | TERM(sublex_start()); |
4580 | ||
a0d0e21e | 4581 | case KEY_map: |
2c38e13d | 4582 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4583 | |
79072805 | 4584 | case KEY_mkdir: |
a0d0e21e | 4585 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4586 | |
4587 | case KEY_msgctl: | |
a0d0e21e | 4588 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4589 | |
4590 | case KEY_msgget: | |
a0d0e21e | 4591 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4592 | |
4593 | case KEY_msgrcv: | |
a0d0e21e | 4594 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4595 | |
4596 | case KEY_msgsnd: | |
a0d0e21e | 4597 | LOP(OP_MSGSND,XTERM); |
79072805 | 4598 | |
77ca0c92 | 4599 | case KEY_our: |
93a17b20 | 4600 | case KEY_my: |
77ca0c92 | 4601 | PL_in_my = tmp; |
c750a3ec | 4602 | s = skipspace(s); |
7e2040f0 | 4603 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4604 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4605 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4606 | goto really_sub; | |
def3634b | 4607 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4608 | if (!PL_in_my_stash) { |
c750a3ec | 4609 | char tmpbuf[1024]; |
3280af22 NIS |
4610 | PL_bufptr = s; |
4611 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4612 | yyerror(tmpbuf); |
4613 | } | |
4614 | } | |
09bef843 | 4615 | yylval.ival = 1; |
55497cff | 4616 | OPERATOR(MY); |
93a17b20 | 4617 | |
79072805 | 4618 | case KEY_next: |
a0d0e21e | 4619 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4620 | LOOPX(OP_NEXT); |
4621 | ||
4622 | case KEY_ne: | |
4623 | Eop(OP_SNE); | |
4624 | ||
a0d0e21e | 4625 | case KEY_no: |
3280af22 | 4626 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4627 | yyerror("\"no\" not allowed in expression"); |
4628 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4629 | s = force_version(s, FALSE); |
a0d0e21e LW |
4630 | yylval.ival = 0; |
4631 | OPERATOR(USE); | |
4632 | ||
4633 | case KEY_not: | |
2d2e263d LW |
4634 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4635 | FUN1(OP_NOT); | |
4636 | else | |
4637 | OPERATOR(NOTOP); | |
a0d0e21e | 4638 | |
79072805 | 4639 | case KEY_open: |
93a17b20 | 4640 | s = skipspace(s); |
7e2040f0 | 4641 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4642 | char *t; |
7e2040f0 | 4643 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4644 | t = skipspace(d); |
e476b1b5 | 4645 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
9014280d | 4646 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 PM |
4647 | "Precedence problem: open %.*s should be open(%.*s)", |
4648 | d-s,s, d-s,s); | |
93a17b20 | 4649 | } |
a0d0e21e | 4650 | LOP(OP_OPEN,XTERM); |
79072805 | 4651 | |
463ee0b2 | 4652 | case KEY_or: |
a0d0e21e | 4653 | yylval.ival = OP_OR; |
463ee0b2 LW |
4654 | OPERATOR(OROP); |
4655 | ||
79072805 LW |
4656 | case KEY_ord: |
4657 | UNI(OP_ORD); | |
4658 | ||
4659 | case KEY_oct: | |
4660 | UNI(OP_OCT); | |
4661 | ||
4662 | case KEY_opendir: | |
a0d0e21e | 4663 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4664 | |
4665 | case KEY_print: | |
3280af22 | 4666 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4667 | LOP(OP_PRINT,XREF); |
79072805 LW |
4668 | |
4669 | case KEY_printf: | |
3280af22 | 4670 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4671 | LOP(OP_PRTF,XREF); |
79072805 | 4672 | |
c07a80fd | 4673 | case KEY_prototype: |
4674 | UNI(OP_PROTOTYPE); | |
4675 | ||
79072805 | 4676 | case KEY_push: |
a0d0e21e | 4677 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4678 | |
4679 | case KEY_pop: | |
4680 | UNI(OP_POP); | |
4681 | ||
a0d0e21e LW |
4682 | case KEY_pos: |
4683 | UNI(OP_POS); | |
4e553d73 | 4684 | |
79072805 | 4685 | case KEY_pack: |
a0d0e21e | 4686 | LOP(OP_PACK,XTERM); |
79072805 LW |
4687 | |
4688 | case KEY_package: | |
a0d0e21e | 4689 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4690 | OPERATOR(PACKAGE); |
4691 | ||
4692 | case KEY_pipe: | |
a0d0e21e | 4693 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4694 | |
4695 | case KEY_q: | |
09bef843 | 4696 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4697 | if (!s) |
85e6fe83 | 4698 | missingterm((char*)0); |
79072805 LW |
4699 | yylval.ival = OP_CONST; |
4700 | TERM(sublex_start()); | |
4701 | ||
a0d0e21e LW |
4702 | case KEY_quotemeta: |
4703 | UNI(OP_QUOTEMETA); | |
4704 | ||
8990e307 | 4705 | case KEY_qw: |
09bef843 | 4706 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4707 | if (!s) |
85e6fe83 | 4708 | missingterm((char*)0); |
8127e0e3 GS |
4709 | force_next(')'); |
4710 | if (SvCUR(PL_lex_stuff)) { | |
4711 | OP *words = Nullop; | |
4712 | int warned = 0; | |
3280af22 | 4713 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4714 | while (len) { |
7948272d | 4715 | SV *sv; |
8127e0e3 GS |
4716 | for (; isSPACE(*d) && len; --len, ++d) ; |
4717 | if (len) { | |
4718 | char *b = d; | |
e476b1b5 | 4719 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4720 | for (; !isSPACE(*d) && len; --len, ++d) { |
4721 | if (*d == ',') { | |
9014280d | 4722 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4723 | "Possible attempt to separate words with commas"); |
4724 | ++warned; | |
4725 | } | |
4726 | else if (*d == '#') { | |
9014280d | 4727 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4728 | "Possible attempt to put comments in qw() list"); |
4729 | ++warned; | |
4730 | } | |
4731 | } | |
4732 | } | |
4733 | else { | |
4734 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4735 | } | |
7948272d NIS |
4736 | sv = newSVpvn(b, d-b); |
4737 | if (DO_UTF8(PL_lex_stuff)) | |
4738 | SvUTF8_on(sv); | |
8127e0e3 | 4739 | words = append_elem(OP_LIST, words, |
7948272d | 4740 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4741 | } |
4742 | } | |
8127e0e3 GS |
4743 | if (words) { |
4744 | PL_nextval[PL_nexttoke].opval = words; | |
4745 | force_next(THING); | |
4746 | } | |
55497cff | 4747 | } |
37fd879b | 4748 | if (PL_lex_stuff) { |
8127e0e3 | 4749 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4750 | PL_lex_stuff = Nullsv; |
4751 | } | |
3280af22 | 4752 | PL_expect = XTERM; |
8127e0e3 | 4753 | TOKEN('('); |
8990e307 | 4754 | |
79072805 | 4755 | case KEY_qq: |
09bef843 | 4756 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4757 | if (!s) |
85e6fe83 | 4758 | missingterm((char*)0); |
a0d0e21e | 4759 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4760 | if (SvIVX(PL_lex_stuff) == '\'') |
4761 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4762 | TERM(sublex_start()); |
4763 | ||
8782bef2 GB |
4764 | case KEY_qr: |
4765 | s = scan_pat(s,OP_QR); | |
4766 | TERM(sublex_start()); | |
4767 | ||
79072805 | 4768 | case KEY_qx: |
09bef843 | 4769 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4770 | if (!s) |
85e6fe83 | 4771 | missingterm((char*)0); |
79072805 LW |
4772 | yylval.ival = OP_BACKTICK; |
4773 | set_csh(); | |
4774 | TERM(sublex_start()); | |
4775 | ||
4776 | case KEY_return: | |
4777 | OLDLOP(OP_RETURN); | |
4778 | ||
4779 | case KEY_require: | |
a7cb1f99 | 4780 | s = skipspace(s); |
e759cc13 RGS |
4781 | if (isDIGIT(*s)) { |
4782 | s = force_version(s, FALSE); | |
a7cb1f99 | 4783 | } |
e759cc13 RGS |
4784 | else if (*s != 'v' || !isDIGIT(s[1]) |
4785 | || (s = force_version(s, TRUE), *s == 'v')) | |
4786 | { | |
a7cb1f99 GS |
4787 | *PL_tokenbuf = '\0'; |
4788 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4789 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4790 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4791 | else if (*s == '<') | |
4792 | yyerror("<> should be quotes"); | |
4793 | } | |
463ee0b2 | 4794 | UNI(OP_REQUIRE); |
79072805 LW |
4795 | |
4796 | case KEY_reset: | |
4797 | UNI(OP_RESET); | |
4798 | ||
4799 | case KEY_redo: | |
a0d0e21e | 4800 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4801 | LOOPX(OP_REDO); |
4802 | ||
4803 | case KEY_rename: | |
a0d0e21e | 4804 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4805 | |
4806 | case KEY_rand: | |
4807 | UNI(OP_RAND); | |
4808 | ||
4809 | case KEY_rmdir: | |
4810 | UNI(OP_RMDIR); | |
4811 | ||
4812 | case KEY_rindex: | |
a0d0e21e | 4813 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4814 | |
4815 | case KEY_read: | |
a0d0e21e | 4816 | LOP(OP_READ,XTERM); |
79072805 LW |
4817 | |
4818 | case KEY_readdir: | |
4819 | UNI(OP_READDIR); | |
4820 | ||
93a17b20 LW |
4821 | case KEY_readline: |
4822 | set_csh(); | |
4823 | UNI(OP_READLINE); | |
4824 | ||
4825 | case KEY_readpipe: | |
4826 | set_csh(); | |
4827 | UNI(OP_BACKTICK); | |
4828 | ||
79072805 LW |
4829 | case KEY_rewinddir: |
4830 | UNI(OP_REWINDDIR); | |
4831 | ||
4832 | case KEY_recv: | |
a0d0e21e | 4833 | LOP(OP_RECV,XTERM); |
79072805 LW |
4834 | |
4835 | case KEY_reverse: | |
a0d0e21e | 4836 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4837 | |
4838 | case KEY_readlink: | |
4839 | UNI(OP_READLINK); | |
4840 | ||
4841 | case KEY_ref: | |
4842 | UNI(OP_REF); | |
4843 | ||
4844 | case KEY_s: | |
4845 | s = scan_subst(s); | |
4846 | if (yylval.opval) | |
4847 | TERM(sublex_start()); | |
4848 | else | |
4849 | TOKEN(1); /* force error */ | |
4850 | ||
a0d0e21e LW |
4851 | case KEY_chomp: |
4852 | UNI(OP_CHOMP); | |
4e553d73 | 4853 | |
79072805 LW |
4854 | case KEY_scalar: |
4855 | UNI(OP_SCALAR); | |
4856 | ||
4857 | case KEY_select: | |
a0d0e21e | 4858 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4859 | |
4860 | case KEY_seek: | |
a0d0e21e | 4861 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4862 | |
4863 | case KEY_semctl: | |
a0d0e21e | 4864 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4865 | |
4866 | case KEY_semget: | |
a0d0e21e | 4867 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4868 | |
4869 | case KEY_semop: | |
a0d0e21e | 4870 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4871 | |
4872 | case KEY_send: | |
a0d0e21e | 4873 | LOP(OP_SEND,XTERM); |
79072805 LW |
4874 | |
4875 | case KEY_setpgrp: | |
a0d0e21e | 4876 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4877 | |
4878 | case KEY_setpriority: | |
a0d0e21e | 4879 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4880 | |
4881 | case KEY_sethostent: | |
ff68c719 | 4882 | UNI(OP_SHOSTENT); |
79072805 LW |
4883 | |
4884 | case KEY_setnetent: | |
ff68c719 | 4885 | UNI(OP_SNETENT); |
79072805 LW |
4886 | |
4887 | case KEY_setservent: | |
ff68c719 | 4888 | UNI(OP_SSERVENT); |
79072805 LW |
4889 | |
4890 | case KEY_setprotoent: | |
ff68c719 | 4891 | UNI(OP_SPROTOENT); |
79072805 LW |
4892 | |
4893 | case KEY_setpwent: | |
4894 | FUN0(OP_SPWENT); | |
4895 | ||
4896 | case KEY_setgrent: | |
4897 | FUN0(OP_SGRENT); | |
4898 | ||
4899 | case KEY_seekdir: | |
a0d0e21e | 4900 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4901 | |
4902 | case KEY_setsockopt: | |
a0d0e21e | 4903 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4904 | |
4905 | case KEY_shift: | |
4906 | UNI(OP_SHIFT); | |
4907 | ||
4908 | case KEY_shmctl: | |
a0d0e21e | 4909 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4910 | |
4911 | case KEY_shmget: | |
a0d0e21e | 4912 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4913 | |
4914 | case KEY_shmread: | |
a0d0e21e | 4915 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4916 | |
4917 | case KEY_shmwrite: | |
a0d0e21e | 4918 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4919 | |
4920 | case KEY_shutdown: | |
a0d0e21e | 4921 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4922 | |
4923 | case KEY_sin: | |
4924 | UNI(OP_SIN); | |
4925 | ||
4926 | case KEY_sleep: | |
4927 | UNI(OP_SLEEP); | |
4928 | ||
4929 | case KEY_socket: | |
a0d0e21e | 4930 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4931 | |
4932 | case KEY_socketpair: | |
a0d0e21e | 4933 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4934 | |
4935 | case KEY_sort: | |
3280af22 | 4936 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4937 | s = skipspace(s); |
4938 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4939 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4940 | PL_expect = XTERM; |
15f0808c | 4941 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4942 | LOP(OP_SORT,XREF); |
79072805 LW |
4943 | |
4944 | case KEY_split: | |
a0d0e21e | 4945 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4946 | |
4947 | case KEY_sprintf: | |
a0d0e21e | 4948 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4949 | |
4950 | case KEY_splice: | |
a0d0e21e | 4951 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4952 | |
4953 | case KEY_sqrt: | |
4954 | UNI(OP_SQRT); | |
4955 | ||
4956 | case KEY_srand: | |
4957 | UNI(OP_SRAND); | |
4958 | ||
4959 | case KEY_stat: | |
4960 | UNI(OP_STAT); | |
4961 | ||
4962 | case KEY_study: | |
79072805 LW |
4963 | UNI(OP_STUDY); |
4964 | ||
4965 | case KEY_substr: | |
a0d0e21e | 4966 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4967 | |
4968 | case KEY_format: | |
4969 | case KEY_sub: | |
93a17b20 | 4970 | really_sub: |
09bef843 | 4971 | { |
3280af22 | 4972 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 4973 | SSize_t tboffset = 0; |
09bef843 | 4974 | expectation attrful; |
d731386a | 4975 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
4976 | int key = tmp; |
4977 | ||
4978 | s = skipspace(s); | |
4979 | ||
7e2040f0 | 4980 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4981 | (*s == ':' && s[1] == ':')) |
4982 | { | |
4983 | PL_expect = XBLOCK; | |
4984 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4985 | /* remember buffer pos'n for later force_word */ |
4986 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4987 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4988 | if (strchr(tmpbuf, ':')) | |
4989 | sv_setpv(PL_subname, tmpbuf); | |
4990 | else { | |
4991 | sv_setsv(PL_subname,PL_curstname); | |
4992 | sv_catpvn(PL_subname,"::",2); | |
4993 | sv_catpvn(PL_subname,tmpbuf,len); | |
4994 | } | |
4995 | s = skipspace(d); | |
4996 | have_name = TRUE; | |
4997 | } | |
463ee0b2 | 4998 | else { |
09bef843 SB |
4999 | if (key == KEY_my) |
5000 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
5001 | PL_expect = XTERMBLOCK; | |
5002 | attrful = XATTRTERM; | |
5003 | sv_setpv(PL_subname,"?"); | |
5004 | have_name = FALSE; | |
463ee0b2 | 5005 | } |
4633a7c4 | 5006 | |
09bef843 SB |
5007 | if (key == KEY_format) { |
5008 | if (*s == '=') | |
5009 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5010 | if (have_name) | |
b1b65b59 JH |
5011 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5012 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5013 | OPERATOR(FORMAT); |
5014 | } | |
79072805 | 5015 | |
09bef843 SB |
5016 | /* Look for a prototype */ |
5017 | if (*s == '(') { | |
5018 | char *p; | |
5019 | ||
5020 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 5021 | if (!s) |
09bef843 | 5022 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 5023 | /* strip spaces and check for bad characters */ |
09bef843 SB |
5024 | d = SvPVX(PL_lex_stuff); |
5025 | tmp = 0; | |
d731386a | 5026 | bad_proto = FALSE; |
09bef843 | 5027 | for (p = d; *p; ++p) { |
d37a9538 | 5028 | if (!isSPACE(*p)) { |
09bef843 | 5029 | d[tmp++] = *p; |
d37a9538 ST |
5030 | if (!strchr("$@%*;[]&\\", *p)) |
5031 | bad_proto = TRUE; | |
5032 | } | |
09bef843 SB |
5033 | } |
5034 | d[tmp] = '\0'; | |
420cdfc1 | 5035 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
9014280d | 5036 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
420cdfc1 ST |
5037 | "Illegal character in prototype for %s : %s", |
5038 | SvPVX(PL_subname), d); | |
09bef843 SB |
5039 | SvCUR(PL_lex_stuff) = tmp; |
5040 | have_proto = TRUE; | |
68dc0745 | 5041 | |
09bef843 | 5042 | s = skipspace(s); |
4633a7c4 | 5043 | } |
09bef843 SB |
5044 | else |
5045 | have_proto = FALSE; | |
5046 | ||
5047 | if (*s == ':' && s[1] != ':') | |
5048 | PL_expect = attrful; | |
5049 | ||
5050 | if (have_proto) { | |
b1b65b59 JH |
5051 | PL_nextval[PL_nexttoke].opval = |
5052 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5053 | PL_lex_stuff = Nullsv; |
5054 | force_next(THING); | |
68dc0745 | 5055 | } |
09bef843 | 5056 | if (!have_name) { |
c99da370 JH |
5057 | sv_setpv(PL_subname, |
5058 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__"); | |
09bef843 | 5059 | TOKEN(ANONSUB); |
4633a7c4 | 5060 | } |
b1b65b59 JH |
5061 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5062 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5063 | if (key == KEY_my) |
5064 | TOKEN(MYSUB); | |
5065 | TOKEN(SUB); | |
4633a7c4 | 5066 | } |
79072805 LW |
5067 | |
5068 | case KEY_system: | |
5069 | set_csh(); | |
a0d0e21e | 5070 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5071 | |
5072 | case KEY_symlink: | |
a0d0e21e | 5073 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5074 | |
5075 | case KEY_syscall: | |
a0d0e21e | 5076 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5077 | |
c07a80fd | 5078 | case KEY_sysopen: |
5079 | LOP(OP_SYSOPEN,XTERM); | |
5080 | ||
137443ea | 5081 | case KEY_sysseek: |
5082 | LOP(OP_SYSSEEK,XTERM); | |
5083 | ||
79072805 | 5084 | case KEY_sysread: |
a0d0e21e | 5085 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5086 | |
5087 | case KEY_syswrite: | |
a0d0e21e | 5088 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5089 | |
5090 | case KEY_tr: | |
5091 | s = scan_trans(s); | |
5092 | TERM(sublex_start()); | |
5093 | ||
5094 | case KEY_tell: | |
5095 | UNI(OP_TELL); | |
5096 | ||
5097 | case KEY_telldir: | |
5098 | UNI(OP_TELLDIR); | |
5099 | ||
463ee0b2 | 5100 | case KEY_tie: |
a0d0e21e | 5101 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5102 | |
c07a80fd | 5103 | case KEY_tied: |
5104 | UNI(OP_TIED); | |
5105 | ||
79072805 LW |
5106 | case KEY_time: |
5107 | FUN0(OP_TIME); | |
5108 | ||
5109 | case KEY_times: | |
5110 | FUN0(OP_TMS); | |
5111 | ||
5112 | case KEY_truncate: | |
a0d0e21e | 5113 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5114 | |
5115 | case KEY_uc: | |
5116 | UNI(OP_UC); | |
5117 | ||
5118 | case KEY_ucfirst: | |
5119 | UNI(OP_UCFIRST); | |
5120 | ||
463ee0b2 LW |
5121 | case KEY_untie: |
5122 | UNI(OP_UNTIE); | |
5123 | ||
79072805 | 5124 | case KEY_until: |
57843af0 | 5125 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5126 | OPERATOR(UNTIL); |
5127 | ||
5128 | case KEY_unless: | |
57843af0 | 5129 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5130 | OPERATOR(UNLESS); |
5131 | ||
5132 | case KEY_unlink: | |
a0d0e21e | 5133 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5134 | |
5135 | case KEY_undef: | |
5136 | UNI(OP_UNDEF); | |
5137 | ||
5138 | case KEY_unpack: | |
a0d0e21e | 5139 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5140 | |
5141 | case KEY_utime: | |
a0d0e21e | 5142 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5143 | |
5144 | case KEY_umask: | |
5145 | UNI(OP_UMASK); | |
5146 | ||
5147 | case KEY_unshift: | |
a0d0e21e LW |
5148 | LOP(OP_UNSHIFT,XTERM); |
5149 | ||
5150 | case KEY_use: | |
3280af22 | 5151 | if (PL_expect != XSTATE) |
a0d0e21e | 5152 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5153 | s = skipspace(s); |
a7cb1f99 | 5154 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5155 | s = force_version(s, TRUE); |
a7cb1f99 | 5156 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5157 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5158 | force_next(WORD); |
5159 | } | |
e759cc13 RGS |
5160 | else if (*s == 'v') { |
5161 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5162 | s = force_version(s, FALSE); | |
5163 | } | |
89bfa8cd | 5164 | } |
5165 | else { | |
5166 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5167 | s = force_version(s, FALSE); |
89bfa8cd | 5168 | } |
a0d0e21e LW |
5169 | yylval.ival = 1; |
5170 | OPERATOR(USE); | |
79072805 LW |
5171 | |
5172 | case KEY_values: | |
5173 | UNI(OP_VALUES); | |
5174 | ||
5175 | case KEY_vec: | |
a0d0e21e | 5176 | LOP(OP_VEC,XTERM); |
79072805 LW |
5177 | |
5178 | case KEY_while: | |
57843af0 | 5179 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5180 | OPERATOR(WHILE); |
5181 | ||
5182 | case KEY_warn: | |
3280af22 | 5183 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5184 | LOP(OP_WARN,XTERM); |
79072805 LW |
5185 | |
5186 | case KEY_wait: | |
5187 | FUN0(OP_WAIT); | |
5188 | ||
5189 | case KEY_waitpid: | |
a0d0e21e | 5190 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5191 | |
5192 | case KEY_wantarray: | |
5193 | FUN0(OP_WANTARRAY); | |
5194 | ||
5195 | case KEY_write: | |
9d116dd7 JH |
5196 | #ifdef EBCDIC |
5197 | { | |
df3728a2 JH |
5198 | char ctl_l[2]; |
5199 | ctl_l[0] = toCTRL('L'); | |
5200 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5201 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5202 | } | |
5203 | #else | |
5204 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5205 | #endif | |
79072805 LW |
5206 | UNI(OP_ENTERWRITE); |
5207 | ||
5208 | case KEY_x: | |
3280af22 | 5209 | if (PL_expect == XOPERATOR) |
79072805 LW |
5210 | Mop(OP_REPEAT); |
5211 | check_uni(); | |
5212 | goto just_a_word; | |
5213 | ||
a0d0e21e LW |
5214 | case KEY_xor: |
5215 | yylval.ival = OP_XOR; | |
5216 | OPERATOR(OROP); | |
5217 | ||
79072805 LW |
5218 | case KEY_y: |
5219 | s = scan_trans(s); | |
5220 | TERM(sublex_start()); | |
5221 | } | |
49dc05e3 | 5222 | }} |
79072805 | 5223 | } |
bf4acbe4 GS |
5224 | #ifdef __SC__ |
5225 | #pragma segment Main | |
5226 | #endif | |
79072805 | 5227 | |
e930465f JH |
5228 | static int |
5229 | S_pending_ident(pTHX) | |
8eceec63 SC |
5230 | { |
5231 | register char *d; | |
5232 | register I32 tmp; | |
5233 | /* pit holds the identifier we read and pending_ident is reset */ | |
5234 | char pit = PL_pending_ident; | |
5235 | PL_pending_ident = 0; | |
5236 | ||
5237 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5238 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5239 | ||
5240 | /* if we're in a my(), we can't allow dynamics here. | |
5241 | $foo'bar has already been turned into $foo::bar, so | |
5242 | just check for colons. | |
5243 | ||
5244 | if it's a legal name, the OP is a PADANY. | |
5245 | */ | |
5246 | if (PL_in_my) { | |
5247 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5248 | if (strchr(PL_tokenbuf,':')) | |
5249 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5250 | "variable %s in \"our\"", | |
5251 | PL_tokenbuf)); | |
5252 | tmp = pad_allocmy(PL_tokenbuf); | |
5253 | } | |
5254 | else { | |
5255 | if (strchr(PL_tokenbuf,':')) | |
5256 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5257 | ||
5258 | yylval.opval = newOP(OP_PADANY, 0); | |
5259 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
5260 | return PRIVATEREF; | |
5261 | } | |
5262 | } | |
5263 | ||
5264 | /* | |
5265 | build the ops for accesses to a my() variable. | |
5266 | ||
5267 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5268 | then used in a comparison. This catches most, but not | |
5269 | all cases. For instance, it catches | |
5270 | sort { my($a); $a <=> $b } | |
5271 | but not | |
5272 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5273 | (although why you'd do that is anyone's guess). | |
5274 | */ | |
5275 | ||
5276 | if (!strchr(PL_tokenbuf,':')) { | |
4d1ff10f | 5277 | #ifdef USE_5005THREADS |
8eceec63 SC |
5278 | /* Check for single character per-thread SVs */ |
5279 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' | |
5280 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
5281 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
5282 | { | |
5283 | yylval.opval = newOP(OP_THREADSV, 0); | |
5284 | yylval.opval->op_targ = tmp; | |
5285 | return PRIVATEREF; | |
5286 | } | |
4d1ff10f | 5287 | #endif /* USE_5005THREADS */ |
8eceec63 SC |
5288 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
5289 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; | |
5290 | /* might be an "our" variable" */ | |
5291 | if (SvFLAGS(namesv) & SVpad_OUR) { | |
5292 | /* build ops for a bareword */ | |
5293 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); | |
5294 | sv_catpvn(sym, "::", 2); | |
5295 | sv_catpv(sym, PL_tokenbuf+1); | |
5296 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5297 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5298 | gv_fetchpv(SvPVX(sym), | |
5299 | (PL_in_eval | |
5300 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5301 | : GV_ADDMULTI |
8eceec63 SC |
5302 | ), |
5303 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5304 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5305 | : SVt_PVHV)); | |
5306 | return WORD; | |
5307 | } | |
5308 | ||
5309 | /* if it's a sort block and they're naming $a or $b */ | |
5310 | if (PL_last_lop_op == OP_SORT && | |
5311 | PL_tokenbuf[0] == '$' && | |
5312 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5313 | && !PL_tokenbuf[2]) | |
5314 | { | |
5315 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5316 | d < PL_bufend && *d != '\n'; | |
5317 | d++) | |
5318 | { | |
5319 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5320 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5321 | PL_tokenbuf); | |
5322 | } | |
5323 | } | |
5324 | } | |
5325 | ||
5326 | yylval.opval = newOP(OP_PADANY, 0); | |
5327 | yylval.opval->op_targ = tmp; | |
5328 | return PRIVATEREF; | |
5329 | } | |
5330 | } | |
5331 | ||
5332 | /* | |
5333 | Whine if they've said @foo in a doublequoted string, | |
5334 | and @foo isn't a variable we can find in the symbol | |
5335 | table. | |
5336 | */ | |
5337 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5338 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5339 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5340 | && ckWARN(WARN_AMBIGUOUS)) | |
5341 | { | |
5342 | /* Downgraded from fatal to warning 20000522 mjd */ | |
9014280d | 5343 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8eceec63 SC |
5344 | "Possible unintended interpolation of %s in string", |
5345 | PL_tokenbuf); | |
5346 | } | |
5347 | } | |
5348 | ||
5349 | /* build ops for a bareword */ | |
5350 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5351 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5352 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5353 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5354 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5355 | : SVt_PVHV)); | |
5356 | return WORD; | |
5357 | } | |
5358 | ||
79072805 | 5359 | I32 |
864dbfa3 | 5360 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5361 | { |
5362 | switch (*d) { | |
5363 | case '_': | |
5364 | if (d[1] == '_') { | |
a0d0e21e | 5365 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5366 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5367 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5368 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5369 | if (strEQ(d,"__END__")) return KEY___END__; |
5370 | } | |
5371 | break; | |
8990e307 LW |
5372 | case 'A': |
5373 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5374 | break; | |
79072805 | 5375 | case 'a': |
463ee0b2 LW |
5376 | switch (len) { |
5377 | case 3: | |
a0d0e21e LW |
5378 | if (strEQ(d,"and")) return -KEY_and; |
5379 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5380 | break; |
463ee0b2 | 5381 | case 5: |
a0d0e21e LW |
5382 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5383 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5384 | break; |
5385 | case 6: | |
a0d0e21e | 5386 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5387 | break; |
5388 | } | |
79072805 LW |
5389 | break; |
5390 | case 'B': | |
5391 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5392 | break; |
79072805 | 5393 | case 'b': |
a0d0e21e LW |
5394 | if (strEQ(d,"bless")) return -KEY_bless; |
5395 | if (strEQ(d,"bind")) return -KEY_bind; | |
5396 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5397 | break; | |
5398 | case 'C': | |
5399 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5400 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5401 | break; |
5402 | case 'c': | |
5403 | switch (len) { | |
5404 | case 3: | |
a0d0e21e LW |
5405 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5406 | if (strEQ(d,"chr")) return -KEY_chr; | |
5407 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5408 | break; |
5409 | case 4: | |
77bc9082 | 5410 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5411 | break; |
5412 | case 5: | |
a0d0e21e LW |
5413 | if (strEQ(d,"close")) return -KEY_close; |
5414 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5415 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5416 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5417 | if (strEQ(d,"chown")) return -KEY_chown; | |
5418 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5419 | break; |
5420 | case 6: | |
a0d0e21e LW |
5421 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5422 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5423 | break; |
5424 | case 7: | |
a0d0e21e | 5425 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5426 | break; |
5427 | case 8: | |
a0d0e21e LW |
5428 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5429 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5430 | break; |
5431 | } | |
5432 | break; | |
ed6116ce LW |
5433 | case 'D': |
5434 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5435 | break; | |
79072805 LW |
5436 | case 'd': |
5437 | switch (len) { | |
5438 | case 2: | |
5439 | if (strEQ(d,"do")) return KEY_do; | |
5440 | break; | |
5441 | case 3: | |
a0d0e21e | 5442 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5443 | break; |
5444 | case 4: | |
a0d0e21e | 5445 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5446 | break; |
5447 | case 6: | |
5448 | if (strEQ(d,"delete")) return KEY_delete; | |
5449 | break; | |
5450 | case 7: | |
5451 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5452 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5453 | break; |
5454 | case 8: | |
a0d0e21e | 5455 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5456 | break; |
5457 | } | |
5458 | break; | |
5459 | case 'E': | |
79072805 LW |
5460 | if (strEQ(d,"END")) return KEY_END; |
5461 | break; | |
5462 | case 'e': | |
5463 | switch (len) { | |
5464 | case 2: | |
a0d0e21e | 5465 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5466 | break; |
5467 | case 3: | |
a0d0e21e | 5468 | if (strEQ(d,"eof")) return -KEY_eof; |
c963b151 | 5469 | if (strEQ(d,"err")) return -KEY_err; |
a0d0e21e | 5470 | if (strEQ(d,"exp")) return -KEY_exp; |
79072805 LW |
5471 | break; |
5472 | case 4: | |
5473 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5474 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5475 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5476 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5477 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5478 | break; |
5479 | case 5: | |
5480 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5481 | break; | |
a0d0e21e LW |
5482 | case 6: |
5483 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5484 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5485 | break; |
79072805 | 5486 | case 8: |
a0d0e21e LW |
5487 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5488 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5489 | break; |
5490 | case 9: | |
a0d0e21e | 5491 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5492 | break; |
5493 | case 10: | |
a0d0e21e LW |
5494 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5495 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5496 | break; |
5497 | case 11: | |
a0d0e21e | 5498 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5499 | break; |
a687059c | 5500 | } |
a687059c | 5501 | break; |
79072805 LW |
5502 | case 'f': |
5503 | switch (len) { | |
5504 | case 3: | |
5505 | if (strEQ(d,"for")) return KEY_for; | |
5506 | break; | |
5507 | case 4: | |
a0d0e21e | 5508 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5509 | break; |
5510 | case 5: | |
a0d0e21e LW |
5511 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5512 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5513 | break; |
5514 | case 6: | |
5515 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5516 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5517 | break; |
5518 | case 7: | |
5519 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5520 | break; | |
5521 | case 8: | |
a0d0e21e | 5522 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5523 | break; |
378cc40b | 5524 | } |
a687059c | 5525 | break; |
79072805 | 5526 | case 'g': |
a687059c LW |
5527 | if (strnEQ(d,"get",3)) { |
5528 | d += 3; | |
5529 | if (*d == 'p') { | |
79072805 LW |
5530 | switch (len) { |
5531 | case 7: | |
a0d0e21e LW |
5532 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5533 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5534 | break; |
5535 | case 8: | |
a0d0e21e LW |
5536 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5537 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5538 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5539 | break; |
5540 | case 11: | |
a0d0e21e LW |
5541 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5542 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5543 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5544 | break; |
5545 | case 14: | |
a0d0e21e | 5546 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5547 | break; |
5548 | case 16: | |
a0d0e21e | 5549 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5550 | break; |
5551 | } | |
a687059c LW |
5552 | } |
5553 | else if (*d == 'h') { | |
a0d0e21e LW |
5554 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5555 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5556 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5557 | } |
5558 | else if (*d == 'n') { | |
a0d0e21e LW |
5559 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5560 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5561 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5562 | } |
5563 | else if (*d == 's') { | |
a0d0e21e LW |
5564 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5565 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5566 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5567 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5568 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5569 | } |
5570 | else if (*d == 'g') { | |
a0d0e21e LW |
5571 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5572 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5573 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5574 | } |
5575 | else if (*d == 'l') { | |
a0d0e21e | 5576 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5577 | } |
a0d0e21e | 5578 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5579 | break; |
a687059c | 5580 | } |
79072805 LW |
5581 | switch (len) { |
5582 | case 2: | |
a0d0e21e LW |
5583 | if (strEQ(d,"gt")) return -KEY_gt; |
5584 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5585 | break; |
5586 | case 4: | |
5587 | if (strEQ(d,"grep")) return KEY_grep; | |
5588 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5589 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5590 | break; |
5591 | case 6: | |
a0d0e21e | 5592 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5593 | break; |
378cc40b | 5594 | } |
a687059c | 5595 | break; |
79072805 | 5596 | case 'h': |
a0d0e21e | 5597 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5598 | break; |
7d07dbc2 MB |
5599 | case 'I': |
5600 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5601 | break; | |
79072805 LW |
5602 | case 'i': |
5603 | switch (len) { | |
5604 | case 2: | |
5605 | if (strEQ(d,"if")) return KEY_if; | |
5606 | break; | |
5607 | case 3: | |
a0d0e21e | 5608 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5609 | break; |
5610 | case 5: | |
a0d0e21e LW |
5611 | if (strEQ(d,"index")) return -KEY_index; |
5612 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5613 | break; |
5614 | } | |
a687059c | 5615 | break; |
79072805 | 5616 | case 'j': |
a0d0e21e | 5617 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5618 | break; |
79072805 LW |
5619 | case 'k': |
5620 | if (len == 4) { | |
3a6a8333 | 5621 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5622 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5623 | } |
79072805 | 5624 | break; |
79072805 LW |
5625 | case 'l': |
5626 | switch (len) { | |
5627 | case 2: | |
a0d0e21e LW |
5628 | if (strEQ(d,"lt")) return -KEY_lt; |
5629 | if (strEQ(d,"le")) return -KEY_le; | |
5630 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5631 | break; |
5632 | case 3: | |
a0d0e21e | 5633 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5634 | break; |
5635 | case 4: | |
5636 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5637 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5638 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5639 | break; |
79072805 LW |
5640 | case 5: |
5641 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5642 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5643 | break; |
5644 | case 6: | |
a0d0e21e LW |
5645 | if (strEQ(d,"length")) return -KEY_length; |
5646 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5647 | break; |
5648 | case 7: | |
a0d0e21e | 5649 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5650 | break; |
5651 | case 9: | |
a0d0e21e | 5652 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5653 | break; |
5654 | } | |
a687059c | 5655 | break; |
79072805 LW |
5656 | case 'm': |
5657 | switch (len) { | |
5658 | case 1: return KEY_m; | |
93a17b20 LW |
5659 | case 2: |
5660 | if (strEQ(d,"my")) return KEY_my; | |
5661 | break; | |
a0d0e21e LW |
5662 | case 3: |
5663 | if (strEQ(d,"map")) return KEY_map; | |
5664 | break; | |
79072805 | 5665 | case 5: |
a0d0e21e | 5666 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5667 | break; |
5668 | case 6: | |
a0d0e21e LW |
5669 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5670 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5671 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5672 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5673 | break; |
5674 | } | |
a687059c | 5675 | break; |
79072805 LW |
5676 | case 'n': |
5677 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5678 | if (strEQ(d,"ne")) return -KEY_ne; |
5679 | if (strEQ(d,"not")) return -KEY_not; | |
5680 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5681 | break; |
79072805 LW |
5682 | case 'o': |
5683 | switch (len) { | |
463ee0b2 | 5684 | case 2: |
a0d0e21e | 5685 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5686 | break; |
79072805 | 5687 | case 3: |
a0d0e21e LW |
5688 | if (strEQ(d,"ord")) return -KEY_ord; |
5689 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5690 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5691 | break; |
5692 | case 4: | |
a0d0e21e | 5693 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5694 | break; |
5695 | case 7: | |
a0d0e21e | 5696 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5697 | break; |
fe14fcc3 | 5698 | } |
a687059c | 5699 | break; |
79072805 LW |
5700 | case 'p': |
5701 | switch (len) { | |
5702 | case 3: | |
4e553d73 | 5703 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5704 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5705 | break; |
5706 | case 4: | |
3a6a8333 | 5707 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5708 | if (strEQ(d,"pack")) return -KEY_pack; |
5709 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5710 | break; |
5711 | case 5: | |
5712 | if (strEQ(d,"print")) return KEY_print; | |
5713 | break; | |
5714 | case 6: | |
5715 | if (strEQ(d,"printf")) return KEY_printf; | |
5716 | break; | |
5717 | case 7: | |
5718 | if (strEQ(d,"package")) return KEY_package; | |
5719 | break; | |
c07a80fd | 5720 | case 9: |
5721 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5722 | } |
79072805 LW |
5723 | break; |
5724 | case 'q': | |
5725 | if (len <= 2) { | |
5726 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5727 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5728 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5729 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5730 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5731 | } |
a0d0e21e | 5732 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5733 | break; |
5734 | case 'r': | |
5735 | switch (len) { | |
5736 | case 3: | |
a0d0e21e | 5737 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5738 | break; |
5739 | case 4: | |
a0d0e21e LW |
5740 | if (strEQ(d,"read")) return -KEY_read; |
5741 | if (strEQ(d,"rand")) return -KEY_rand; | |
5742 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5743 | if (strEQ(d,"redo")) return KEY_redo; |
5744 | break; | |
5745 | case 5: | |
a0d0e21e LW |
5746 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5747 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5748 | break; |
5749 | case 6: | |
5750 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5751 | if (strEQ(d,"rename")) return -KEY_rename; |
5752 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5753 | break; |
5754 | case 7: | |
ec4ab249 | 5755 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5756 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5757 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5758 | break; |
5759 | case 8: | |
a0d0e21e LW |
5760 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5761 | if (strEQ(d,"readline")) return -KEY_readline; | |
5762 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5763 | break; |
5764 | case 9: | |
a0d0e21e | 5765 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5766 | break; |
a687059c | 5767 | } |
79072805 LW |
5768 | break; |
5769 | case 's': | |
a687059c | 5770 | switch (d[1]) { |
79072805 | 5771 | case 0: return KEY_s; |
a687059c | 5772 | case 'c': |
79072805 | 5773 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5774 | break; |
5775 | case 'e': | |
79072805 LW |
5776 | switch (len) { |
5777 | case 4: | |
a0d0e21e LW |
5778 | if (strEQ(d,"seek")) return -KEY_seek; |
5779 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5780 | break; |
5781 | case 5: | |
a0d0e21e | 5782 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5783 | break; |
5784 | case 6: | |
a0d0e21e LW |
5785 | if (strEQ(d,"select")) return -KEY_select; |
5786 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5787 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5788 | break; |
5789 | case 7: | |
a0d0e21e LW |
5790 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5791 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5792 | break; |
5793 | case 8: | |
a0d0e21e LW |
5794 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5795 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5796 | break; |
5797 | case 9: | |
a0d0e21e | 5798 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5799 | break; |
5800 | case 10: | |
a0d0e21e LW |
5801 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5802 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5803 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5804 | break; |
5805 | case 11: | |
a0d0e21e LW |
5806 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5807 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5808 | break; |
5809 | } | |
a687059c LW |
5810 | break; |
5811 | case 'h': | |
79072805 LW |
5812 | switch (len) { |
5813 | case 5: | |
3a6a8333 | 5814 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
5815 | break; |
5816 | case 6: | |
a0d0e21e LW |
5817 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5818 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5819 | break; |
5820 | case 7: | |
a0d0e21e | 5821 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5822 | break; |
5823 | case 8: | |
a0d0e21e LW |
5824 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5825 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5826 | break; |
5827 | } | |
a687059c LW |
5828 | break; |
5829 | case 'i': | |
a0d0e21e | 5830 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5831 | break; |
5832 | case 'l': | |
a0d0e21e | 5833 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5834 | break; |
5835 | case 'o': | |
79072805 | 5836 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5837 | if (strEQ(d,"socket")) return -KEY_socket; |
5838 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5839 | break; |
5840 | case 'p': | |
79072805 | 5841 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5842 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 5843 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
5844 | break; |
5845 | case 'q': | |
a0d0e21e | 5846 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5847 | break; |
5848 | case 'r': | |
a0d0e21e | 5849 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5850 | break; |
5851 | case 't': | |
a0d0e21e | 5852 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5853 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5854 | break; |
5855 | case 'u': | |
a0d0e21e | 5856 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5857 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5858 | break; |
5859 | case 'y': | |
79072805 LW |
5860 | switch (len) { |
5861 | case 6: | |
a0d0e21e | 5862 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5863 | break; |
5864 | case 7: | |
a0d0e21e LW |
5865 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5866 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5867 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5868 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5869 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5870 | break; |
5871 | case 8: | |
a0d0e21e | 5872 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5873 | break; |
a687059c | 5874 | } |
a687059c LW |
5875 | break; |
5876 | } | |
5877 | break; | |
79072805 LW |
5878 | case 't': |
5879 | switch (len) { | |
5880 | case 2: | |
5881 | if (strEQ(d,"tr")) return KEY_tr; | |
5882 | break; | |
463ee0b2 LW |
5883 | case 3: |
5884 | if (strEQ(d,"tie")) return KEY_tie; | |
5885 | break; | |
79072805 | 5886 | case 4: |
a0d0e21e | 5887 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5888 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5889 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5890 | break; |
5891 | case 5: | |
a0d0e21e | 5892 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5893 | break; |
5894 | case 7: | |
a0d0e21e | 5895 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5896 | break; |
5897 | case 8: | |
a0d0e21e | 5898 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5899 | break; |
378cc40b | 5900 | } |
a687059c | 5901 | break; |
79072805 LW |
5902 | case 'u': |
5903 | switch (len) { | |
5904 | case 2: | |
a0d0e21e LW |
5905 | if (strEQ(d,"uc")) return -KEY_uc; |
5906 | break; | |
5907 | case 3: | |
5908 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5909 | break; |
5910 | case 5: | |
5911 | if (strEQ(d,"undef")) return KEY_undef; | |
5912 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5913 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5914 | if (strEQ(d,"utime")) return -KEY_utime; |
5915 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5916 | break; |
5917 | case 6: | |
5918 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5919 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5920 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5921 | break; |
5922 | case 7: | |
3a6a8333 | 5923 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 5924 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5925 | break; |
a687059c LW |
5926 | } |
5927 | break; | |
79072805 | 5928 | case 'v': |
a0d0e21e LW |
5929 | if (strEQ(d,"values")) return -KEY_values; |
5930 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5931 | break; |
79072805 LW |
5932 | case 'w': |
5933 | switch (len) { | |
5934 | case 4: | |
a0d0e21e LW |
5935 | if (strEQ(d,"warn")) return -KEY_warn; |
5936 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5937 | break; |
5938 | case 5: | |
5939 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5940 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5941 | break; |
5942 | case 7: | |
a0d0e21e | 5943 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5944 | break; |
5945 | case 9: | |
a0d0e21e | 5946 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5947 | break; |
2f3197b3 | 5948 | } |
a687059c | 5949 | break; |
79072805 | 5950 | case 'x': |
a0d0e21e LW |
5951 | if (len == 1) return -KEY_x; |
5952 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5953 | break; |
79072805 LW |
5954 | case 'y': |
5955 | if (len == 1) return KEY_y; | |
5956 | break; | |
5957 | case 'z': | |
a687059c LW |
5958 | break; |
5959 | } | |
79072805 | 5960 | return 0; |
a687059c LW |
5961 | } |
5962 | ||
76e3520e | 5963 | STATIC void |
cea2e8a9 | 5964 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5965 | { |
2f3197b3 LW |
5966 | char *w; |
5967 | ||
d008e5eb | 5968 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
5969 | if (ckWARN(WARN_SYNTAX)) { |
5970 | int level = 1; | |
5971 | for (w = s+2; *w && level; w++) { | |
5972 | if (*w == '(') | |
5973 | ++level; | |
5974 | else if (*w == ')') | |
5975 | --level; | |
5976 | } | |
5977 | if (*w) | |
5978 | for (; *w && isSPACE(*w); w++) ; | |
5979 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
9014280d | 5980 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 5981 | "%s (...) interpreted as function",name); |
d008e5eb | 5982 | } |
2f3197b3 | 5983 | } |
3280af22 | 5984 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5985 | s++; |
a687059c LW |
5986 | if (*s == '(') |
5987 | s++; | |
3280af22 | 5988 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5989 | s++; |
7e2040f0 | 5990 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5991 | w = s++; |
7e2040f0 | 5992 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5993 | s++; |
3280af22 | 5994 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5995 | s++; |
e929a76b | 5996 | if (*s == ',') { |
463ee0b2 | 5997 | int kw; |
e929a76b | 5998 | *s = '\0'; |
864dbfa3 | 5999 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 6000 | *s = ','; |
463ee0b2 | 6001 | if (kw) |
e929a76b | 6002 | return; |
cea2e8a9 | 6003 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
6004 | } |
6005 | } | |
6006 | } | |
6007 | ||
423cee85 JH |
6008 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
6009 | Best used as sv=new_constant(..., sv, ...). | |
6010 | If s, pv are NULL, calls subroutine with one argument, | |
6011 | and type is used with error messages only. */ | |
6012 | ||
b3ac6de7 | 6013 | STATIC SV * |
dff6d3cd | 6014 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 6015 | const char *type) |
b3ac6de7 | 6016 | { |
b3ac6de7 | 6017 | dSP; |
3280af22 | 6018 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 6019 | SV *res; |
b3ac6de7 IZ |
6020 | SV **cvp; |
6021 | SV *cv, *typesv; | |
f0af216f | 6022 | const char *why1, *why2, *why3; |
4e553d73 | 6023 | |
f0af216f | 6024 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
6025 | SV *msg; |
6026 | ||
f0af216f | 6027 | why2 = strEQ(key,"charnames") |
41ab332f | 6028 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 6029 | : ""; |
4e553d73 | 6030 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
6031 | (type ? type: "undef"), why2); |
6032 | ||
6033 | /* This is convoluted and evil ("goto considered harmful") | |
6034 | * but I do not understand the intricacies of all the different | |
6035 | * failure modes of %^H in here. The goal here is to make | |
6036 | * the most probable error message user-friendly. --jhi */ | |
6037 | ||
6038 | goto msgdone; | |
6039 | ||
423cee85 | 6040 | report: |
4e553d73 | 6041 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 6042 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 6043 | msgdone: |
423cee85 JH |
6044 | yyerror(SvPVX(msg)); |
6045 | SvREFCNT_dec(msg); | |
6046 | return sv; | |
6047 | } | |
b3ac6de7 IZ |
6048 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
6049 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
6050 | why1 = "$^H{"; |
6051 | why2 = key; | |
f0af216f | 6052 | why3 = "} is not defined"; |
423cee85 | 6053 | goto report; |
b3ac6de7 IZ |
6054 | } |
6055 | sv_2mortal(sv); /* Parent created it permanently */ | |
6056 | cv = *cvp; | |
423cee85 JH |
6057 | if (!pv && s) |
6058 | pv = sv_2mortal(newSVpvn(s, len)); | |
6059 | if (type && pv) | |
6060 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6061 | else |
423cee85 | 6062 | typesv = &PL_sv_undef; |
4e553d73 | 6063 | |
e788e7d3 | 6064 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6065 | ENTER ; |
6066 | SAVETMPS; | |
4e553d73 | 6067 | |
423cee85 | 6068 | PUSHMARK(SP) ; |
a5845cb7 | 6069 | EXTEND(sp, 3); |
423cee85 JH |
6070 | if (pv) |
6071 | PUSHs(pv); | |
b3ac6de7 | 6072 | PUSHs(sv); |
423cee85 JH |
6073 | if (pv) |
6074 | PUSHs(typesv); | |
b3ac6de7 | 6075 | PUTBACK; |
423cee85 | 6076 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6077 | |
423cee85 | 6078 | SPAGAIN ; |
4e553d73 | 6079 | |
423cee85 | 6080 | /* Check the eval first */ |
9b0e499b | 6081 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6082 | STRLEN n_a; |
6083 | sv_catpv(ERRSV, "Propagated"); | |
6084 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6085 | (void)POPs; |
423cee85 JH |
6086 | res = SvREFCNT_inc(sv); |
6087 | } | |
6088 | else { | |
6089 | res = POPs; | |
e1f15930 | 6090 | (void)SvREFCNT_inc(res); |
423cee85 | 6091 | } |
4e553d73 | 6092 | |
423cee85 JH |
6093 | PUTBACK ; |
6094 | FREETMPS ; | |
6095 | LEAVE ; | |
b3ac6de7 | 6096 | POPSTACK; |
4e553d73 | 6097 | |
b3ac6de7 | 6098 | if (!SvOK(res)) { |
423cee85 JH |
6099 | why1 = "Call to &{$^H{"; |
6100 | why2 = key; | |
f0af216f | 6101 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6102 | sv = res; |
6103 | goto report; | |
9b0e499b | 6104 | } |
423cee85 | 6105 | |
9b0e499b | 6106 | return res; |
b3ac6de7 | 6107 | } |
4e553d73 | 6108 | |
76e3520e | 6109 | STATIC char * |
cea2e8a9 | 6110 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6111 | { |
6112 | register char *d = dest; | |
8903cb82 | 6113 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6114 | for (;;) { |
8903cb82 | 6115 | if (d >= e) |
cea2e8a9 | 6116 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6117 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6118 | *d++ = *s++; |
7e2040f0 | 6119 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6120 | *d++ = ':'; |
6121 | *d++ = ':'; | |
6122 | s++; | |
6123 | } | |
c3e0f903 | 6124 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6125 | *d++ = *s++; |
6126 | *d++ = *s++; | |
6127 | } | |
fd400ab9 | 6128 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6129 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6130 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6131 | t += UTF8SKIP(t); |
6132 | if (d + (t - s) > e) | |
cea2e8a9 | 6133 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6134 | Copy(s, d, t - s, char); |
6135 | d += t - s; | |
6136 | s = t; | |
6137 | } | |
463ee0b2 LW |
6138 | else { |
6139 | *d = '\0'; | |
6140 | *slp = d - dest; | |
6141 | return s; | |
e929a76b | 6142 | } |
378cc40b LW |
6143 | } |
6144 | } | |
6145 | ||
76e3520e | 6146 | STATIC char * |
cea2e8a9 | 6147 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6148 | { |
6149 | register char *d; | |
8903cb82 | 6150 | register char *e; |
79072805 | 6151 | char *bracket = 0; |
748a9306 | 6152 | char funny = *s++; |
378cc40b | 6153 | |
a0d0e21e LW |
6154 | if (isSPACE(*s)) |
6155 | s = skipspace(s); | |
378cc40b | 6156 | d = dest; |
8903cb82 | 6157 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6158 | if (isDIGIT(*s)) { |
8903cb82 | 6159 | while (isDIGIT(*s)) { |
6160 | if (d >= e) | |
cea2e8a9 | 6161 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6162 | *d++ = *s++; |
8903cb82 | 6163 | } |
378cc40b LW |
6164 | } |
6165 | else { | |
463ee0b2 | 6166 | for (;;) { |
8903cb82 | 6167 | if (d >= e) |
cea2e8a9 | 6168 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6169 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6170 | *d++ = *s++; |
7e2040f0 | 6171 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6172 | *d++ = ':'; |
6173 | *d++ = ':'; | |
6174 | s++; | |
6175 | } | |
a0d0e21e | 6176 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6177 | *d++ = *s++; |
6178 | *d++ = *s++; | |
6179 | } | |
fd400ab9 | 6180 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6181 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6182 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6183 | t += UTF8SKIP(t); |
6184 | if (d + (t - s) > e) | |
cea2e8a9 | 6185 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6186 | Copy(s, d, t - s, char); |
6187 | d += t - s; | |
6188 | s = t; | |
6189 | } | |
463ee0b2 LW |
6190 | else |
6191 | break; | |
6192 | } | |
378cc40b LW |
6193 | } |
6194 | *d = '\0'; | |
6195 | d = dest; | |
79072805 | 6196 | if (*d) { |
3280af22 NIS |
6197 | if (PL_lex_state != LEX_NORMAL) |
6198 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6199 | return s; |
378cc40b | 6200 | } |
748a9306 | 6201 | if (*s == '$' && s[1] && |
7e2040f0 | 6202 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6203 | { |
4810e5ec | 6204 | return s; |
5cd24f17 | 6205 | } |
79072805 LW |
6206 | if (*s == '{') { |
6207 | bracket = s; | |
6208 | s++; | |
6209 | } | |
6210 | else if (ck_uni) | |
6211 | check_uni(); | |
93a17b20 | 6212 | if (s < send) |
79072805 LW |
6213 | *d = *s++; |
6214 | d[1] = '\0'; | |
2b92dfce | 6215 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6216 | *d = toCTRL(*s); |
6217 | s++; | |
de3bb511 | 6218 | } |
79072805 | 6219 | if (bracket) { |
748a9306 | 6220 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6221 | while (s < send) { |
6222 | char ch = *s++; | |
bf4acbe4 | 6223 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6224 | *d = ch; |
6225 | break; | |
6226 | } | |
6227 | } | |
748a9306 | 6228 | } |
7e2040f0 | 6229 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6230 | d++; |
a0ed51b3 LW |
6231 | if (UTF) { |
6232 | e = s; | |
155aba94 | 6233 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6234 | e += UTF8SKIP(e); |
fd400ab9 | 6235 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6236 | e += UTF8SKIP(e); |
6237 | } | |
6238 | Copy(s, d, e - s, char); | |
6239 | d += e - s; | |
6240 | s = e; | |
6241 | } | |
6242 | else { | |
2b92dfce | 6243 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6244 | *d++ = *s++; |
2b92dfce | 6245 | if (d >= e) |
cea2e8a9 | 6246 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6247 | } |
79072805 | 6248 | *d = '\0'; |
bf4acbe4 | 6249 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6250 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6251 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6252 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
9014280d | 6253 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 6254 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6255 | funny, dest, brack, funny, dest, brack); |
6256 | } | |
79072805 | 6257 | bracket++; |
a0be28da | 6258 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6259 | return s; |
6260 | } | |
4e553d73 NIS |
6261 | } |
6262 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6263 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6264 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6265 | && isALNUM(*s)) | |
6266 | { | |
6267 | d++; | |
6268 | while (isALNUM(*s) && d < e) { | |
6269 | *d++ = *s++; | |
6270 | } | |
6271 | if (d >= e) | |
cea2e8a9 | 6272 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6273 | *d = '\0'; |
79072805 LW |
6274 | } |
6275 | if (*s == '}') { | |
6276 | s++; | |
3280af22 NIS |
6277 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
6278 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
6279 | if (funny == '#') |
6280 | funny = '@'; | |
d008e5eb | 6281 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6282 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6283 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6284 | { |
9014280d | 6285 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
6286 | "Ambiguous use of %c{%s} resolved to %c%s", |
6287 | funny, dest, funny, dest); | |
6288 | } | |
6289 | } | |
79072805 LW |
6290 | } |
6291 | else { | |
6292 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6293 | *dest = '\0'; |
79072805 LW |
6294 | } |
6295 | } | |
3280af22 NIS |
6296 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6297 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6298 | return s; |
6299 | } | |
6300 | ||
cea2e8a9 | 6301 | void |
2b36a5a0 | 6302 | Perl_pmflag(pTHX_ U32* pmfl, int ch) |
a0d0e21e | 6303 | { |
bbce6d69 | 6304 | if (ch == 'i') |
a0d0e21e | 6305 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6306 | else if (ch == 'g') |
6307 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6308 | else if (ch == 'c') |
6309 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6310 | else if (ch == 'o') |
6311 | *pmfl |= PMf_KEEP; | |
6312 | else if (ch == 'm') | |
6313 | *pmfl |= PMf_MULTILINE; | |
6314 | else if (ch == 's') | |
6315 | *pmfl |= PMf_SINGLELINE; | |
6316 | else if (ch == 'x') | |
6317 | *pmfl |= PMf_EXTENDED; | |
6318 | } | |
378cc40b | 6319 | |
76e3520e | 6320 | STATIC char * |
cea2e8a9 | 6321 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6322 | { |
79072805 LW |
6323 | PMOP *pm; |
6324 | char *s; | |
378cc40b | 6325 | |
09bef843 | 6326 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6327 | if (!s) |
cea2e8a9 | 6328 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6329 | |
8782bef2 | 6330 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6331 | if (PL_multi_open == '?') |
79072805 | 6332 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6333 | if(type == OP_QR) { |
6334 | while (*s && strchr("iomsx", *s)) | |
6335 | pmflag(&pm->op_pmflags,*s++); | |
6336 | } | |
6337 | else { | |
6338 | while (*s && strchr("iogcmsx", *s)) | |
6339 | pmflag(&pm->op_pmflags,*s++); | |
6340 | } | |
4ac733c9 MJD |
6341 | /* issue a warning if /c is specified,but /g is not */ |
6342 | if (ckWARN(WARN_REGEXP) && | |
6343 | (pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) | |
6344 | { | |
6345 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_without_g); | |
6346 | } | |
6347 | ||
4633a7c4 | 6348 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6349 | |
3280af22 | 6350 | PL_lex_op = (OP*)pm; |
79072805 | 6351 | yylval.ival = OP_MATCH; |
378cc40b LW |
6352 | return s; |
6353 | } | |
6354 | ||
76e3520e | 6355 | STATIC char * |
cea2e8a9 | 6356 | S_scan_subst(pTHX_ char *start) |
79072805 | 6357 | { |
a0d0e21e | 6358 | register char *s; |
79072805 | 6359 | register PMOP *pm; |
4fdae800 | 6360 | I32 first_start; |
79072805 LW |
6361 | I32 es = 0; |
6362 | ||
79072805 LW |
6363 | yylval.ival = OP_NULL; |
6364 | ||
09bef843 | 6365 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6366 | |
37fd879b | 6367 | if (!s) |
cea2e8a9 | 6368 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6369 | |
3280af22 | 6370 | if (s[-1] == PL_multi_open) |
79072805 LW |
6371 | s--; |
6372 | ||
3280af22 | 6373 | first_start = PL_multi_start; |
09bef843 | 6374 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6375 | if (!s) { |
37fd879b | 6376 | if (PL_lex_stuff) { |
3280af22 | 6377 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6378 | PL_lex_stuff = Nullsv; |
6379 | } | |
cea2e8a9 | 6380 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6381 | } |
3280af22 | 6382 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6383 | |
79072805 | 6384 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6385 | while (*s) { |
a687059c LW |
6386 | if (*s == 'e') { |
6387 | s++; | |
2f3197b3 | 6388 | es++; |
a687059c | 6389 | } |
b3eb6a9b | 6390 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6391 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6392 | else |
6393 | break; | |
378cc40b | 6394 | } |
79072805 | 6395 | |
64e578a2 MJD |
6396 | /* /c is not meaningful with s/// */ |
6397 | if (ckWARN(WARN_REGEXP) && (pm->op_pmflags & PMf_CONTINUE)) | |
4ac733c9 | 6398 | { |
64e578a2 | 6399 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_in_subst); |
4ac733c9 MJD |
6400 | } |
6401 | ||
79072805 LW |
6402 | if (es) { |
6403 | SV *repl; | |
0244c3a4 GS |
6404 | PL_sublex_info.super_bufptr = s; |
6405 | PL_sublex_info.super_bufend = PL_bufend; | |
6406 | PL_multi_end = 0; | |
79072805 | 6407 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6408 | repl = newSVpvn("",0); |
463ee0b2 | 6409 | while (es-- > 0) |
a0d0e21e | 6410 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6411 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6412 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6413 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6414 | SvEVALED_on(repl); |
3280af22 NIS |
6415 | SvREFCNT_dec(PL_lex_repl); |
6416 | PL_lex_repl = repl; | |
378cc40b | 6417 | } |
79072805 | 6418 | |
4633a7c4 | 6419 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6420 | PL_lex_op = (OP*)pm; |
79072805 | 6421 | yylval.ival = OP_SUBST; |
378cc40b LW |
6422 | return s; |
6423 | } | |
6424 | ||
76e3520e | 6425 | STATIC char * |
cea2e8a9 | 6426 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6427 | { |
a0d0e21e | 6428 | register char* s; |
11343788 | 6429 | OP *o; |
79072805 LW |
6430 | short *tbl; |
6431 | I32 squash; | |
a0ed51b3 | 6432 | I32 del; |
79072805 LW |
6433 | I32 complement; |
6434 | ||
6435 | yylval.ival = OP_NULL; | |
6436 | ||
09bef843 | 6437 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6438 | if (!s) |
cea2e8a9 | 6439 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6440 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6441 | s--; |
6442 | ||
09bef843 | 6443 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6444 | if (!s) { |
37fd879b | 6445 | if (PL_lex_stuff) { |
3280af22 | 6446 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6447 | PL_lex_stuff = Nullsv; |
6448 | } | |
cea2e8a9 | 6449 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6450 | } |
79072805 | 6451 | |
a0ed51b3 | 6452 | complement = del = squash = 0; |
6940069f | 6453 | while (strchr("cds", *s)) { |
395c3793 | 6454 | if (*s == 'c') |
79072805 | 6455 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6456 | else if (*s == 'd') |
a0ed51b3 LW |
6457 | del = OPpTRANS_DELETE; |
6458 | else if (*s == 's') | |
79072805 | 6459 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6460 | s++; |
6461 | } | |
8973db79 JH |
6462 | |
6463 | New(803, tbl, complement&&!del?258:256, short); | |
6464 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
7948272d NIS |
6465 | o->op_private = del|squash|complement| |
6466 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| | |
6467 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6468 | |
3280af22 | 6469 | PL_lex_op = o; |
79072805 LW |
6470 | yylval.ival = OP_TRANS; |
6471 | return s; | |
6472 | } | |
6473 | ||
76e3520e | 6474 | STATIC char * |
cea2e8a9 | 6475 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6476 | { |
6477 | SV *herewas; | |
6478 | I32 op_type = OP_SCALAR; | |
6479 | I32 len; | |
6480 | SV *tmpstr; | |
6481 | char term; | |
6482 | register char *d; | |
fc36a67e | 6483 | register char *e; |
4633a7c4 | 6484 | char *peek; |
3280af22 | 6485 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6486 | |
6487 | s += 2; | |
3280af22 NIS |
6488 | d = PL_tokenbuf; |
6489 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6490 | if (!outer) |
79072805 | 6491 | *d++ = '\n'; |
bf4acbe4 | 6492 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6493 | if (*peek && strchr("`'\"",*peek)) { |
6494 | s = peek; | |
79072805 | 6495 | term = *s++; |
3280af22 | 6496 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6497 | d += len; |
3280af22 | 6498 | if (s < PL_bufend) |
79072805 | 6499 | s++; |
79072805 LW |
6500 | } |
6501 | else { | |
6502 | if (*s == '\\') | |
6503 | s++, term = '\''; | |
6504 | else | |
6505 | term = '"'; | |
7e2040f0 | 6506 | if (!isALNUM_lazy_if(s,UTF)) |
12bcd1a6 | 6507 | deprecate_old("bare << to mean <<\"\""); |
7e2040f0 | 6508 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6509 | if (d < e) |
6510 | *d++ = *s; | |
6511 | } | |
6512 | } | |
3280af22 | 6513 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6514 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6515 | *d++ = '\n'; |
6516 | *d = '\0'; | |
3280af22 | 6517 | len = d - PL_tokenbuf; |
6a27c188 | 6518 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6519 | d = strchr(s, '\r'); |
6520 | if (d) { | |
6521 | char *olds = s; | |
6522 | s = d; | |
3280af22 | 6523 | while (s < PL_bufend) { |
f63a84b2 LW |
6524 | if (*s == '\r') { |
6525 | *d++ = '\n'; | |
6526 | if (*++s == '\n') | |
6527 | s++; | |
6528 | } | |
6529 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6530 | *d++ = *s++; | |
6531 | s++; | |
6532 | } | |
6533 | else | |
6534 | *d++ = *s++; | |
6535 | } | |
6536 | *d = '\0'; | |
3280af22 NIS |
6537 | PL_bufend = d; |
6538 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6539 | s = olds; |
6540 | } | |
6541 | #endif | |
79072805 | 6542 | d = "\n"; |
3280af22 | 6543 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6544 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6545 | else |
79cb57f6 | 6546 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6547 | s += SvCUR(herewas); |
748a9306 | 6548 | |
8d6dde3e | 6549 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6550 | sv_upgrade(tmpstr, SVt_PVIV); |
6551 | if (term == '\'') { | |
79072805 | 6552 | op_type = OP_CONST; |
748a9306 LW |
6553 | SvIVX(tmpstr) = -1; |
6554 | } | |
6555 | else if (term == '`') { | |
79072805 | 6556 | op_type = OP_BACKTICK; |
748a9306 LW |
6557 | SvIVX(tmpstr) = '\\'; |
6558 | } | |
79072805 LW |
6559 | |
6560 | CLINE; | |
57843af0 | 6561 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6562 | PL_multi_open = PL_multi_close = '<'; |
6563 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6564 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6565 | char *bufptr = PL_sublex_info.super_bufptr; | |
6566 | char *bufend = PL_sublex_info.super_bufend; | |
6567 | char *olds = s - SvCUR(herewas); | |
6568 | s = strchr(bufptr, '\n'); | |
6569 | if (!s) | |
6570 | s = bufend; | |
6571 | d = s; | |
6572 | while (s < bufend && | |
6573 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6574 | if (*s++ == '\n') | |
57843af0 | 6575 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6576 | } |
6577 | if (s >= bufend) { | |
eb160463 | 6578 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
6579 | missingterm(PL_tokenbuf); |
6580 | } | |
6581 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6582 | sv_setpvn(tmpstr,d+1,s-d); | |
6583 | s += len - 1; | |
6584 | sv_catpvn(herewas,s,bufend-s); | |
6585 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6586 | ||
6587 | s = olds; | |
6588 | goto retval; | |
6589 | } | |
6590 | else if (!outer) { | |
79072805 | 6591 | d = s; |
3280af22 NIS |
6592 | while (s < PL_bufend && |
6593 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6594 | if (*s++ == '\n') |
57843af0 | 6595 | CopLINE_inc(PL_curcop); |
79072805 | 6596 | } |
3280af22 | 6597 | if (s >= PL_bufend) { |
eb160463 | 6598 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6599 | missingterm(PL_tokenbuf); |
79072805 LW |
6600 | } |
6601 | sv_setpvn(tmpstr,d+1,s-d); | |
6602 | s += len - 1; | |
57843af0 | 6603 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6604 | |
3280af22 NIS |
6605 | sv_catpvn(herewas,s,PL_bufend-s); |
6606 | sv_setsv(PL_linestr,herewas); | |
6607 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6608 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6609 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6610 | } |
6611 | else | |
6612 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6613 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6614 | if (!outer || |
3280af22 | 6615 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
eb160463 | 6616 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6617 | missingterm(PL_tokenbuf); |
79072805 | 6618 | } |
57843af0 | 6619 | CopLINE_inc(PL_curcop); |
3280af22 | 6620 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6621 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6622 | #ifndef PERL_STRICT_CR |
3280af22 | 6623 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6624 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6625 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6626 | { |
3280af22 NIS |
6627 | PL_bufend[-2] = '\n'; |
6628 | PL_bufend--; | |
6629 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6630 | } |
3280af22 NIS |
6631 | else if (PL_bufend[-1] == '\r') |
6632 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6633 | } |
3280af22 NIS |
6634 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6635 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6636 | #endif |
3280af22 | 6637 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6638 | SV *sv = NEWSV(88,0); |
6639 | ||
93a17b20 | 6640 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6641 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6642 | (void)SvIOK_on(sv); |
6643 | SvIVX(sv) = 0; | |
57843af0 | 6644 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6645 | } |
3280af22 NIS |
6646 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6647 | s = PL_bufend - 1; | |
79072805 | 6648 | *s = ' '; |
3280af22 NIS |
6649 | sv_catsv(PL_linestr,herewas); |
6650 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6651 | } |
6652 | else { | |
3280af22 NIS |
6653 | s = PL_bufend; |
6654 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6655 | } |
6656 | } | |
79072805 | 6657 | s++; |
0244c3a4 | 6658 | retval: |
57843af0 | 6659 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6660 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6661 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6662 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6663 | } |
8990e307 | 6664 | SvREFCNT_dec(herewas); |
0064a8a9 | 6665 | if (UTF && !IN_BYTES && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) |
7948272d | 6666 | SvUTF8_on(tmpstr); |
3280af22 | 6667 | PL_lex_stuff = tmpstr; |
79072805 LW |
6668 | yylval.ival = op_type; |
6669 | return s; | |
6670 | } | |
6671 | ||
02aa26ce NT |
6672 | /* scan_inputsymbol |
6673 | takes: current position in input buffer | |
6674 | returns: new position in input buffer | |
6675 | side-effects: yylval and lex_op are set. | |
6676 | ||
6677 | This code handles: | |
6678 | ||
6679 | <> read from ARGV | |
6680 | <FH> read from filehandle | |
6681 | <pkg::FH> read from package qualified filehandle | |
6682 | <pkg'FH> read from package qualified filehandle | |
6683 | <$fh> read from filehandle in $fh | |
6684 | <*.h> filename glob | |
6685 | ||
6686 | */ | |
6687 | ||
76e3520e | 6688 | STATIC char * |
cea2e8a9 | 6689 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6690 | { |
02aa26ce | 6691 | register char *s = start; /* current position in buffer */ |
79072805 | 6692 | register char *d; |
fc36a67e | 6693 | register char *e; |
1b420867 | 6694 | char *end; |
79072805 LW |
6695 | I32 len; |
6696 | ||
3280af22 NIS |
6697 | d = PL_tokenbuf; /* start of temp holding space */ |
6698 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6699 | end = strchr(s, '\n'); |
6700 | if (!end) | |
6701 | end = PL_bufend; | |
6702 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6703 | |
6704 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6705 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6706 | */ |
6707 | ||
3280af22 | 6708 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6709 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6710 | if (s >= end) |
cea2e8a9 | 6711 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6712 | |
fc36a67e | 6713 | s++; |
02aa26ce NT |
6714 | |
6715 | /* check for <$fh> | |
6716 | Remember, only scalar variables are interpreted as filehandles by | |
6717 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6718 | treated as a glob() call. | |
6719 | This code makes use of the fact that except for the $ at the front, | |
6720 | a scalar variable and a filehandle look the same. | |
6721 | */ | |
4633a7c4 | 6722 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6723 | |
6724 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6725 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6726 | d++; |
02aa26ce NT |
6727 | |
6728 | /* If we've tried to read what we allow filehandles to look like, and | |
6729 | there's still text left, then it must be a glob() and not a getline. | |
6730 | Use scan_str to pull out the stuff between the <> and treat it | |
6731 | as nothing more than a string. | |
6732 | */ | |
6733 | ||
3280af22 | 6734 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6735 | yylval.ival = OP_GLOB; |
6736 | set_csh(); | |
09bef843 | 6737 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6738 | if (!s) |
cea2e8a9 | 6739 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6740 | return s; |
6741 | } | |
395c3793 | 6742 | else { |
9b3023bc RGS |
6743 | bool readline_overriden = FALSE; |
6744 | GV *gv_readline = Nullgv; | |
6745 | GV **gvp; | |
02aa26ce | 6746 | /* we're in a filehandle read situation */ |
3280af22 | 6747 | d = PL_tokenbuf; |
02aa26ce NT |
6748 | |
6749 | /* turn <> into <ARGV> */ | |
79072805 LW |
6750 | if (!len) |
6751 | (void)strcpy(d,"ARGV"); | |
02aa26ce | 6752 | |
9b3023bc | 6753 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6754 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6755 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6756 | || |
ba979b31 | 6757 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6758 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6759 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
6760 | readline_overriden = TRUE; |
6761 | ||
02aa26ce NT |
6762 | /* if <$fh>, create the ops to turn the variable into a |
6763 | filehandle | |
6764 | */ | |
79072805 | 6765 | if (*d == '$') { |
a0d0e21e | 6766 | I32 tmp; |
02aa26ce NT |
6767 | |
6768 | /* try to find it in the pad for this block, otherwise find | |
6769 | add symbol table ops | |
6770 | */ | |
11343788 | 6771 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
f558d5af JH |
6772 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
6773 | if (SvFLAGS(namesv) & SVpad_OUR) { | |
6774 | SV *sym = sv_2mortal(newSVpv(HvNAME(GvSTASH(namesv)),0)); | |
6775 | sv_catpvn(sym, "::", 2); | |
6776 | sv_catpv(sym, d+1); | |
6777 | d = SvPVX(sym); | |
6778 | goto intro_sym; | |
6779 | } | |
6780 | else { | |
6781 | OP *o = newOP(OP_PADSV, 0); | |
6782 | o->op_targ = tmp; | |
9b3023bc RGS |
6783 | PL_lex_op = readline_overriden |
6784 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6785 | append_elem(OP_LIST, o, | |
6786 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
6787 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 6788 | } |
a0d0e21e LW |
6789 | } |
6790 | else { | |
f558d5af JH |
6791 | GV *gv; |
6792 | ++d; | |
6793 | intro_sym: | |
6794 | gv = gv_fetchpv(d, | |
6795 | (PL_in_eval | |
6796 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 6797 | : GV_ADDMULTI), |
f558d5af | 6798 | SVt_PV); |
9b3023bc RGS |
6799 | PL_lex_op = readline_overriden |
6800 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6801 | append_elem(OP_LIST, | |
6802 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
6803 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6804 | : (OP*)newUNOP(OP_READLINE, 0, | |
6805 | newUNOP(OP_RV2SV, 0, | |
6806 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 6807 | } |
7c6fadd6 RGS |
6808 | if (!readline_overriden) |
6809 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
f5284f61 | 6810 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ |
79072805 LW |
6811 | yylval.ival = OP_NULL; |
6812 | } | |
02aa26ce NT |
6813 | |
6814 | /* If it's none of the above, it must be a literal filehandle | |
6815 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6816 | else { |
85e6fe83 | 6817 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
6818 | PL_lex_op = readline_overriden |
6819 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6820 | append_elem(OP_LIST, | |
6821 | newGVOP(OP_GV, 0, gv), | |
6822 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6823 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
6824 | yylval.ival = OP_NULL; |
6825 | } | |
6826 | } | |
02aa26ce | 6827 | |
79072805 LW |
6828 | return s; |
6829 | } | |
6830 | ||
02aa26ce NT |
6831 | |
6832 | /* scan_str | |
6833 | takes: start position in buffer | |
09bef843 SB |
6834 | keep_quoted preserve \ on the embedded delimiter(s) |
6835 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6836 | returns: position to continue reading from buffer |
6837 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6838 | updates the read buffer. | |
6839 | ||
6840 | This subroutine pulls a string out of the input. It is called for: | |
6841 | q single quotes q(literal text) | |
6842 | ' single quotes 'literal text' | |
6843 | qq double quotes qq(interpolate $here please) | |
6844 | " double quotes "interpolate $here please" | |
6845 | qx backticks qx(/bin/ls -l) | |
6846 | ` backticks `/bin/ls -l` | |
6847 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6848 | m// regexp match m/this/ | |
6849 | s/// regexp substitute s/this/that/ | |
6850 | tr/// string transliterate tr/this/that/ | |
6851 | y/// string transliterate y/this/that/ | |
6852 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6853 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6854 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6855 | ||
6856 | In most of these cases (all but <>, patterns and transliterate) | |
6857 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6858 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6859 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6860 | calls scan_str(). | |
4e553d73 | 6861 | |
02aa26ce NT |
6862 | It skips whitespace before the string starts, and treats the first |
6863 | character as the delimiter. If the delimiter is one of ([{< then | |
6864 | the corresponding "close" character )]}> is used as the closing | |
6865 | delimiter. It allows quoting of delimiters, and if the string has | |
6866 | balanced delimiters ([{<>}]) it allows nesting. | |
6867 | ||
37fd879b HS |
6868 | On success, the SV with the resulting string is put into lex_stuff or, |
6869 | if that is already non-NULL, into lex_repl. The second case occurs only | |
6870 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
6871 | For convenience, the terminating delimiter character is stuffed into | |
6872 | SvIVX of the SV. | |
02aa26ce NT |
6873 | */ |
6874 | ||
76e3520e | 6875 | STATIC char * |
09bef843 | 6876 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6877 | { |
02aa26ce NT |
6878 | SV *sv; /* scalar value: string */ |
6879 | char *tmps; /* temp string, used for delimiter matching */ | |
6880 | register char *s = start; /* current position in the buffer */ | |
6881 | register char term; /* terminating character */ | |
6882 | register char *to; /* current position in the sv's data */ | |
6883 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 6884 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6885 | |
6886 | /* skip space before the delimiter */ | |
fb73857a | 6887 | if (isSPACE(*s)) |
6888 | s = skipspace(s); | |
02aa26ce NT |
6889 | |
6890 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6891 | CLINE; |
02aa26ce NT |
6892 | |
6893 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6894 | term = *s; |
63cd0674 | 6895 | if (!UTF8_IS_INVARIANT((U8)term) && UTF) |
89491803 | 6896 | has_utf8 = TRUE; |
b1c7b182 | 6897 | |
02aa26ce | 6898 | /* mark where we are */ |
57843af0 | 6899 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6900 | PL_multi_open = term; |
02aa26ce NT |
6901 | |
6902 | /* find corresponding closing delimiter */ | |
93a17b20 | 6903 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6904 | term = tmps[5]; |
3280af22 | 6905 | PL_multi_close = term; |
79072805 | 6906 | |
02aa26ce | 6907 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6908 | assuming. 79 is the SV's initial length. What a random number. */ |
6909 | sv = NEWSV(87,79); | |
ed6116ce LW |
6910 | sv_upgrade(sv, SVt_PVIV); |
6911 | SvIVX(sv) = term; | |
a0d0e21e | 6912 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6913 | |
6914 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6915 | if (keep_delims) |
6916 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6917 | s++; |
6918 | for (;;) { | |
02aa26ce | 6919 | /* extend sv if need be */ |
3280af22 | 6920 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6921 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6922 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6923 | |
02aa26ce | 6924 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6925 | if (PL_multi_open == PL_multi_close) { |
6926 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6927 | /* embedded newlines increment the current line number */ |
3280af22 | 6928 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6929 | CopLINE_inc(PL_curcop); |
02aa26ce | 6930 | /* handle quoted delimiters */ |
3280af22 | 6931 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6932 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6933 | s++; |
02aa26ce | 6934 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6935 | else |
6936 | *to++ = *s++; | |
6937 | } | |
02aa26ce NT |
6938 | /* terminate when run out of buffer (the for() condition), or |
6939 | have found the terminator */ | |
93a17b20 LW |
6940 | else if (*s == term) |
6941 | break; | |
63cd0674 | 6942 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 6943 | has_utf8 = TRUE; |
93a17b20 LW |
6944 | *to = *s; |
6945 | } | |
6946 | } | |
02aa26ce NT |
6947 | |
6948 | /* if the terminator isn't the same as the start character (e.g., | |
6949 | matched brackets), we have to allow more in the quoting, and | |
6950 | be prepared for nested brackets. | |
6951 | */ | |
93a17b20 | 6952 | else { |
02aa26ce | 6953 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6954 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6955 | /* embedded newlines increment the line count */ |
3280af22 | 6956 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6957 | CopLINE_inc(PL_curcop); |
02aa26ce | 6958 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6959 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6960 | if (!keep_quoted && |
6961 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6962 | s++; |
6963 | else | |
6964 | *to++ = *s++; | |
6965 | } | |
02aa26ce | 6966 | /* allow nested opens and closes */ |
3280af22 | 6967 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6968 | break; |
3280af22 | 6969 | else if (*s == PL_multi_open) |
93a17b20 | 6970 | brackets++; |
63cd0674 | 6971 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 6972 | has_utf8 = TRUE; |
93a17b20 LW |
6973 | *to = *s; |
6974 | } | |
6975 | } | |
02aa26ce | 6976 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6977 | *to = '\0'; |
463ee0b2 | 6978 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6979 | |
02aa26ce NT |
6980 | /* |
6981 | * this next chunk reads more into the buffer if we're not done yet | |
6982 | */ | |
6983 | ||
b1c7b182 GS |
6984 | if (s < PL_bufend) |
6985 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6986 | |
6a27c188 | 6987 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6988 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6989 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6990 | (to[-2] == '\n' && to[-1] == '\r')) | |
6991 | { | |
f63a84b2 LW |
6992 | to[-2] = '\n'; |
6993 | to--; | |
6994 | SvCUR_set(sv, to - SvPVX(sv)); | |
6995 | } | |
6996 | else if (to[-1] == '\r') | |
6997 | to[-1] = '\n'; | |
6998 | } | |
6999 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
7000 | to[-1] = '\n'; | |
7001 | #endif | |
7002 | ||
02aa26ce NT |
7003 | /* if we're out of file, or a read fails, bail and reset the current |
7004 | line marker so we can report where the unterminated string began | |
7005 | */ | |
3280af22 NIS |
7006 | if (!PL_rsfp || |
7007 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 7008 | sv_free(sv); |
eb160463 | 7009 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
79072805 LW |
7010 | return Nullch; |
7011 | } | |
02aa26ce | 7012 | /* we read a line, so increment our line counter */ |
57843af0 | 7013 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 7014 | |
02aa26ce | 7015 | /* update debugger info */ |
3280af22 | 7016 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
7017 | SV *sv = NEWSV(88,0); |
7018 | ||
93a17b20 | 7019 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 7020 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
7021 | (void)SvIOK_on(sv); |
7022 | SvIVX(sv) = 0; | |
57843af0 | 7023 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 7024 | } |
a0ed51b3 | 7025 | |
3280af22 NIS |
7026 | /* having changed the buffer, we must update PL_bufend */ |
7027 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 7028 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 7029 | } |
4e553d73 | 7030 | |
02aa26ce NT |
7031 | /* at this point, we have successfully read the delimited string */ |
7032 | ||
09bef843 SB |
7033 | if (keep_delims) |
7034 | sv_catpvn(sv, s, 1); | |
89491803 | 7035 | if (has_utf8) |
b1c7b182 | 7036 | SvUTF8_on(sv); |
57843af0 | 7037 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 7038 | s++; |
02aa26ce NT |
7039 | |
7040 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
7041 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
7042 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 7043 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 7044 | } |
02aa26ce NT |
7045 | |
7046 | /* decide whether this is the first or second quoted string we've read | |
7047 | for this op | |
7048 | */ | |
4e553d73 | 7049 | |
3280af22 NIS |
7050 | if (PL_lex_stuff) |
7051 | PL_lex_repl = sv; | |
79072805 | 7052 | else |
3280af22 | 7053 | PL_lex_stuff = sv; |
378cc40b LW |
7054 | return s; |
7055 | } | |
7056 | ||
02aa26ce NT |
7057 | /* |
7058 | scan_num | |
7059 | takes: pointer to position in buffer | |
7060 | returns: pointer to new position in buffer | |
7061 | side-effects: builds ops for the constant in yylval.op | |
7062 | ||
7063 | Read a number in any of the formats that Perl accepts: | |
7064 | ||
7fd134d9 JH |
7065 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
7066 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
7067 | 0b[01](_?[01])* |
7068 | 0[0-7](_?[0-7])* | |
7069 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7070 | |
3280af22 | 7071 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7072 | thing it reads. |
7073 | ||
7074 | If it reads a number without a decimal point or an exponent, it will | |
7075 | try converting the number to an integer and see if it can do so | |
7076 | without loss of precision. | |
7077 | */ | |
4e553d73 | 7078 | |
378cc40b | 7079 | char * |
b73d6f50 | 7080 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7081 | { |
02aa26ce NT |
7082 | register char *s = start; /* current position in buffer */ |
7083 | register char *d; /* destination in temp buffer */ | |
7084 | register char *e; /* end of temp buffer */ | |
86554af2 | 7085 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7086 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7087 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7088 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7089 | static char number_too_long[] = "Number too long"; |
378cc40b | 7090 | |
02aa26ce NT |
7091 | /* We use the first character to decide what type of number this is */ |
7092 | ||
378cc40b | 7093 | switch (*s) { |
79072805 | 7094 | default: |
cea2e8a9 | 7095 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7096 | |
02aa26ce | 7097 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7098 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7099 | case '0': |
7100 | { | |
02aa26ce NT |
7101 | /* variables: |
7102 | u holds the "number so far" | |
4f19785b WSI |
7103 | shift the power of 2 of the base |
7104 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7105 | overflowed was the number more than we can hold? |
7106 | ||
7107 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7108 | we in octal/hex/binary?" indicator to disallow hex characters |
7109 | when in octal mode. | |
02aa26ce | 7110 | */ |
9e24b6e2 JH |
7111 | NV n = 0.0; |
7112 | UV u = 0; | |
79072805 | 7113 | I32 shift; |
9e24b6e2 JH |
7114 | bool overflowed = FALSE; |
7115 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
7116 | static char* bases[5] = { "", "binary", "", "octal", | |
7117 | "hexadecimal" }; | |
7118 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7119 | "Hexadecimal" }; | |
7120 | static char *maxima[5] = { "", | |
7121 | "0b11111111111111111111111111111111", | |
7122 | "", | |
893fe2c2 | 7123 | "037777777777", |
9e24b6e2 JH |
7124 | "0xffffffff" }; |
7125 | char *base, *Base, *max; | |
378cc40b | 7126 | |
02aa26ce | 7127 | /* check for hex */ |
378cc40b LW |
7128 | if (s[1] == 'x') { |
7129 | shift = 4; | |
7130 | s += 2; | |
4f19785b WSI |
7131 | } else if (s[1] == 'b') { |
7132 | shift = 1; | |
7133 | s += 2; | |
378cc40b | 7134 | } |
02aa26ce | 7135 | /* check for a decimal in disguise */ |
b78218b7 | 7136 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7137 | goto decimal; |
02aa26ce | 7138 | /* so it must be octal */ |
928753ea | 7139 | else { |
378cc40b | 7140 | shift = 3; |
928753ea JH |
7141 | s++; |
7142 | } | |
7143 | ||
7144 | if (*s == '_') { | |
7145 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7146 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7147 | "Misplaced _ in number"); |
7148 | lastub = s++; | |
7149 | } | |
9e24b6e2 JH |
7150 | |
7151 | base = bases[shift]; | |
7152 | Base = Bases[shift]; | |
7153 | max = maxima[shift]; | |
02aa26ce | 7154 | |
4f19785b | 7155 | /* read the rest of the number */ |
378cc40b | 7156 | for (;;) { |
9e24b6e2 | 7157 | /* x is used in the overflow test, |
893fe2c2 | 7158 | b is the digit we're adding on. */ |
9e24b6e2 | 7159 | UV x, b; |
55497cff | 7160 | |
378cc40b | 7161 | switch (*s) { |
02aa26ce NT |
7162 | |
7163 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7164 | default: |
7165 | goto out; | |
02aa26ce | 7166 | |
928753ea | 7167 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7168 | case '_': |
928753ea | 7169 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7170 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7171 | "Misplaced _ in number"); |
7172 | lastub = s++; | |
de3bb511 | 7173 | break; |
02aa26ce NT |
7174 | |
7175 | /* 8 and 9 are not octal */ | |
378cc40b | 7176 | case '8': case '9': |
4f19785b | 7177 | if (shift == 3) |
cea2e8a9 | 7178 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7179 | /* FALL THROUGH */ |
02aa26ce NT |
7180 | |
7181 | /* octal digits */ | |
4f19785b | 7182 | case '2': case '3': case '4': |
378cc40b | 7183 | case '5': case '6': case '7': |
4f19785b | 7184 | if (shift == 1) |
cea2e8a9 | 7185 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7186 | /* FALL THROUGH */ |
7187 | ||
7188 | case '0': case '1': | |
02aa26ce | 7189 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7190 | goto digit; |
02aa26ce NT |
7191 | |
7192 | /* hex digits */ | |
378cc40b LW |
7193 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7194 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7195 | /* make sure they said 0x */ |
378cc40b LW |
7196 | if (shift != 4) |
7197 | goto out; | |
55497cff | 7198 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7199 | |
7200 | /* Prepare to put the digit we have onto the end | |
7201 | of the number so far. We check for overflows. | |
7202 | */ | |
7203 | ||
55497cff | 7204 | digit: |
9e24b6e2 JH |
7205 | if (!overflowed) { |
7206 | x = u << shift; /* make room for the digit */ | |
7207 | ||
7208 | if ((x >> shift) != u | |
7209 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7210 | overflowed = TRUE; |
7211 | n = (NV) u; | |
767a6a26 | 7212 | if (ckWARN_d(WARN_OVERFLOW)) |
9014280d | 7213 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), |
9e24b6e2 JH |
7214 | "Integer overflow in %s number", |
7215 | base); | |
7216 | } else | |
7217 | u = x | b; /* add the digit to the end */ | |
7218 | } | |
7219 | if (overflowed) { | |
7220 | n *= nvshift[shift]; | |
7221 | /* If an NV has not enough bits in its | |
7222 | * mantissa to represent an UV this summing of | |
7223 | * small low-order numbers is a waste of time | |
7224 | * (because the NV cannot preserve the | |
7225 | * low-order bits anyway): we could just | |
7226 | * remember when did we overflow and in the | |
7227 | * end just multiply n by the right | |
7228 | * amount. */ | |
7229 | n += (NV) b; | |
55497cff | 7230 | } |
378cc40b LW |
7231 | break; |
7232 | } | |
7233 | } | |
02aa26ce NT |
7234 | |
7235 | /* if we get here, we had success: make a scalar value from | |
7236 | the number. | |
7237 | */ | |
378cc40b | 7238 | out: |
928753ea JH |
7239 | |
7240 | /* final misplaced underbar check */ | |
7241 | if (s[-1] == '_') { | |
7242 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7243 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
7244 | } |
7245 | ||
79072805 | 7246 | sv = NEWSV(92,0); |
9e24b6e2 | 7247 | if (overflowed) { |
767a6a26 | 7248 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
9014280d | 7249 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7250 | "%s number > %s non-portable", |
7251 | Base, max); | |
7252 | sv_setnv(sv, n); | |
7253 | } | |
7254 | else { | |
15041a67 | 7255 | #if UVSIZE > 4 |
767a6a26 | 7256 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
9014280d | 7257 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7258 | "%s number > %s non-portable", |
7259 | Base, max); | |
2cc4c2dc | 7260 | #endif |
9e24b6e2 JH |
7261 | sv_setuv(sv, u); |
7262 | } | |
2cc4c2dc | 7263 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 7264 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7265 | } |
7266 | break; | |
02aa26ce NT |
7267 | |
7268 | /* | |
7269 | handle decimal numbers. | |
7270 | we're also sent here when we read a 0 as the first digit | |
7271 | */ | |
378cc40b LW |
7272 | case '1': case '2': case '3': case '4': case '5': |
7273 | case '6': case '7': case '8': case '9': case '.': | |
7274 | decimal: | |
3280af22 NIS |
7275 | d = PL_tokenbuf; |
7276 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7277 | floatit = FALSE; |
02aa26ce NT |
7278 | |
7279 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7280 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7281 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7282 | if -w is on |
7283 | */ | |
93a17b20 | 7284 | if (*s == '_') { |
928753ea | 7285 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7286 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7287 | "Misplaced _ in number"); |
7288 | lastub = s++; | |
93a17b20 | 7289 | } |
fc36a67e | 7290 | else { |
02aa26ce | 7291 | /* check for end of fixed-length buffer */ |
fc36a67e | 7292 | if (d >= e) |
cea2e8a9 | 7293 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7294 | /* if we're ok, copy the character */ |
378cc40b | 7295 | *d++ = *s++; |
fc36a67e | 7296 | } |
378cc40b | 7297 | } |
02aa26ce NT |
7298 | |
7299 | /* final misplaced underbar check */ | |
928753ea | 7300 | if (lastub && s == lastub + 1) { |
d008e5eb | 7301 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 7302 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 7303 | } |
02aa26ce NT |
7304 | |
7305 | /* read a decimal portion if there is one. avoid | |
7306 | 3..5 being interpreted as the number 3. followed | |
7307 | by .5 | |
7308 | */ | |
2f3197b3 | 7309 | if (*s == '.' && s[1] != '.') { |
79072805 | 7310 | floatit = TRUE; |
378cc40b | 7311 | *d++ = *s++; |
02aa26ce | 7312 | |
928753ea JH |
7313 | if (*s == '_') { |
7314 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7315 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7316 | "Misplaced _ in number"); |
7317 | lastub = s; | |
7318 | } | |
7319 | ||
7320 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7321 | */ |
fc36a67e | 7322 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7323 | /* fixed length buffer check */ |
fc36a67e | 7324 | if (d >= e) |
cea2e8a9 | 7325 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7326 | if (*s == '_') { |
7327 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
9014280d | 7328 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7329 | "Misplaced _ in number"); |
7330 | lastub = s; | |
7331 | } | |
7332 | else | |
fc36a67e | 7333 | *d++ = *s; |
378cc40b | 7334 | } |
928753ea JH |
7335 | /* fractional part ending in underbar? */ |
7336 | if (s[-1] == '_') { | |
7337 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7338 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7339 | "Misplaced _ in number"); |
7340 | } | |
dd629d5b GS |
7341 | if (*s == '.' && isDIGIT(s[1])) { |
7342 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7343 | s = start; |
dd629d5b GS |
7344 | goto vstring; |
7345 | } | |
378cc40b | 7346 | } |
02aa26ce NT |
7347 | |
7348 | /* read exponent part, if present */ | |
7fd134d9 | 7349 | if (*s && strchr("eE",*s) && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7350 | floatit = TRUE; |
7351 | s++; | |
02aa26ce NT |
7352 | |
7353 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7354 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7355 | |
7fd134d9 JH |
7356 | /* stray preinitial _ */ |
7357 | if (*s == '_') { | |
7358 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7359 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7360 | "Misplaced _ in number"); |
7361 | lastub = s++; | |
7362 | } | |
7363 | ||
02aa26ce | 7364 | /* allow positive or negative exponent */ |
378cc40b LW |
7365 | if (*s == '+' || *s == '-') |
7366 | *d++ = *s++; | |
02aa26ce | 7367 | |
7fd134d9 JH |
7368 | /* stray initial _ */ |
7369 | if (*s == '_') { | |
7370 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7371 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7372 | "Misplaced _ in number"); |
7373 | lastub = s++; | |
7374 | } | |
7375 | ||
7fd134d9 JH |
7376 | /* read digits of exponent */ |
7377 | while (isDIGIT(*s) || *s == '_') { | |
7378 | if (isDIGIT(*s)) { | |
7379 | if (d >= e) | |
7380 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7381 | *d++ = *s++; |
7fd134d9 JH |
7382 | } |
7383 | else { | |
7384 | if (ckWARN(WARN_SYNTAX) && | |
7385 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7386 | (!isDIGIT(s[1]) && s[1] != '_'))) |
9014280d | 7387 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 | 7388 | "Misplaced _ in number"); |
b3b48e3e | 7389 | lastub = s++; |
7fd134d9 | 7390 | } |
7fd134d9 | 7391 | } |
378cc40b | 7392 | } |
02aa26ce | 7393 | |
02aa26ce NT |
7394 | |
7395 | /* make an sv from the string */ | |
79072805 | 7396 | sv = NEWSV(92,0); |
097ee67d | 7397 | |
0b7fceb9 | 7398 | /* |
58bb9ec3 NC |
7399 | We try to do an integer conversion first if no characters |
7400 | indicating "float" have been found. | |
0b7fceb9 MU |
7401 | */ |
7402 | ||
7403 | if (!floatit) { | |
58bb9ec3 NC |
7404 | UV uv; |
7405 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7406 | ||
7407 | if (flags == IS_NUMBER_IN_UV) { | |
7408 | if (uv <= IV_MAX) | |
86554af2 | 7409 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7410 | else |
c239479b | 7411 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7412 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7413 | if (uv <= (UV) IV_MIN) | |
7414 | sv_setiv(sv, -(IV)uv); | |
7415 | else | |
7416 | floatit = TRUE; | |
7417 | } else | |
7418 | floatit = TRUE; | |
7419 | } | |
0b7fceb9 | 7420 | if (floatit) { |
58bb9ec3 NC |
7421 | /* terminate the string */ |
7422 | *d = '\0'; | |
86554af2 JH |
7423 | nv = Atof(PL_tokenbuf); |
7424 | sv_setnv(sv, nv); | |
7425 | } | |
86554af2 | 7426 | |
b8403495 JH |
7427 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7428 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7429 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7430 | (floatit ? "float" : "integer"), |
7431 | sv, Nullsv, NULL); | |
378cc40b | 7432 | break; |
0b7fceb9 | 7433 | |
e312add1 | 7434 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7435 | case 'v': |
dd629d5b | 7436 | vstring: |
f4758303 JP |
7437 | sv = NEWSV(92,5); /* preallocate storage space */ |
7438 | s = new_vstring(s,sv); | |
a7cb1f99 | 7439 | break; |
79072805 | 7440 | } |
a687059c | 7441 | |
02aa26ce NT |
7442 | /* make the op for the constant and return */ |
7443 | ||
a86a20aa | 7444 | if (sv) |
b73d6f50 | 7445 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7446 | else |
b73d6f50 | 7447 | lvalp->opval = Nullop; |
a687059c | 7448 | |
378cc40b LW |
7449 | return s; |
7450 | } | |
7451 | ||
76e3520e | 7452 | STATIC char * |
cea2e8a9 | 7453 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7454 | { |
79072805 | 7455 | register char *eol; |
378cc40b | 7456 | register char *t; |
79cb57f6 | 7457 | SV *stuff = newSVpvn("",0); |
79072805 | 7458 | bool needargs = FALSE; |
378cc40b | 7459 | |
79072805 | 7460 | while (!needargs) { |
c2e66d9e | 7461 | if (*s == '.' || *s == /*{*/'}') { |
79072805 | 7462 | /*SUPPRESS 530*/ |
51882d45 | 7463 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7464 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7465 | #else |
bf4acbe4 | 7466 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7467 | #endif |
6a65c6a0 | 7468 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7469 | break; |
7470 | } | |
3280af22 | 7471 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7472 | eol = strchr(s,'\n'); |
0f85fab0 | 7473 | if (!eol++) |
3280af22 | 7474 | eol = PL_bufend; |
0f85fab0 LW |
7475 | } |
7476 | else | |
3280af22 | 7477 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7478 | if (*s != '#') { |
a0d0e21e LW |
7479 | for (t = s; t < eol; t++) { |
7480 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7481 | needargs = FALSE; | |
7482 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7483 | } |
a0d0e21e LW |
7484 | if (*t == '@' || *t == '^') |
7485 | needargs = TRUE; | |
378cc40b | 7486 | } |
7121b347 MG |
7487 | if (eol > s) { |
7488 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7489 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7490 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7491 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7492 | end[-2] = '\n'; | |
7493 | end[-1] = '\0'; | |
7494 | SvCUR(stuff)--; | |
7495 | } | |
2dc4c65b | 7496 | #endif |
7121b347 MG |
7497 | } |
7498 | else | |
7499 | break; | |
79072805 LW |
7500 | } |
7501 | s = eol; | |
3280af22 NIS |
7502 | if (PL_rsfp) { |
7503 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7504 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7505 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7506 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7507 | if (!s) { |
3280af22 | 7508 | s = PL_bufptr; |
79072805 | 7509 | yyerror("Format not terminated"); |
378cc40b LW |
7510 | break; |
7511 | } | |
378cc40b | 7512 | } |
463ee0b2 | 7513 | incline(s); |
79072805 | 7514 | } |
a0d0e21e LW |
7515 | enough: |
7516 | if (SvCUR(stuff)) { | |
3280af22 | 7517 | PL_expect = XTERM; |
79072805 | 7518 | if (needargs) { |
3280af22 NIS |
7519 | PL_lex_state = LEX_NORMAL; |
7520 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7521 | force_next(','); |
7522 | } | |
a0d0e21e | 7523 | else |
3280af22 NIS |
7524 | PL_lex_state = LEX_FORMLINE; |
7525 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7526 | force_next(THING); |
3280af22 | 7527 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7528 | force_next(LSTOP); |
378cc40b | 7529 | } |
79072805 | 7530 | else { |
8990e307 | 7531 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7532 | PL_lex_formbrack = 0; |
7533 | PL_bufptr = s; | |
79072805 LW |
7534 | } |
7535 | return s; | |
378cc40b | 7536 | } |
a687059c | 7537 | |
76e3520e | 7538 | STATIC void |
cea2e8a9 | 7539 | S_set_csh(pTHX) |
a687059c | 7540 | { |
ae986130 | 7541 | #ifdef CSH |
3280af22 NIS |
7542 | if (!PL_cshlen) |
7543 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7544 | #endif |
a687059c | 7545 | } |
463ee0b2 | 7546 | |
ba6d6ac9 | 7547 | I32 |
864dbfa3 | 7548 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7549 | { |
3280af22 NIS |
7550 | I32 oldsavestack_ix = PL_savestack_ix; |
7551 | CV* outsidecv = PL_compcv; | |
748a9306 | 7552 | AV* comppadlist; |
8990e307 | 7553 | |
3280af22 NIS |
7554 | if (PL_compcv) { |
7555 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7556 | } |
7766f137 | 7557 | SAVEI32(PL_subline); |
3280af22 NIS |
7558 | save_item(PL_subname); |
7559 | SAVEI32(PL_padix); | |
354992b1 | 7560 | SAVECOMPPAD(); |
3280af22 NIS |
7561 | SAVESPTR(PL_comppad_name); |
7562 | SAVESPTR(PL_compcv); | |
7563 | SAVEI32(PL_comppad_name_fill); | |
7564 | SAVEI32(PL_min_intro_pending); | |
7565 | SAVEI32(PL_max_intro_pending); | |
7566 | SAVEI32(PL_pad_reset_pending); | |
7567 | ||
7568 | PL_compcv = (CV*)NEWSV(1104,0); | |
7569 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7570 | CvFLAGS(PL_compcv) |= flags; | |
7571 | ||
7572 | PL_comppad = newAV(); | |
7573 | av_push(PL_comppad, Nullsv); | |
7574 | PL_curpad = AvARRAY(PL_comppad); | |
7575 | PL_comppad_name = newAV(); | |
7576 | PL_comppad_name_fill = 0; | |
7577 | PL_min_intro_pending = 0; | |
7578 | PL_padix = 0; | |
57843af0 | 7579 | PL_subline = CopLINE(PL_curcop); |
4d1ff10f | 7580 | #ifdef USE_5005THREADS |
79cb57f6 | 7581 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7582 | PL_curpad[0] = (SV*)newAV(); |
7583 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
4d1ff10f | 7584 | #endif /* USE_5005THREADS */ |
748a9306 LW |
7585 | |
7586 | comppadlist = newAV(); | |
7587 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7588 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7589 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7590 | |
3280af22 NIS |
7591 | CvPADLIST(PL_compcv) = comppadlist; |
7592 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
4d1ff10f | 7593 | #ifdef USE_5005THREADS |
533c011a NIS |
7594 | CvOWNER(PL_compcv) = 0; |
7595 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7596 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
4d1ff10f | 7597 | #endif /* USE_5005THREADS */ |
748a9306 | 7598 | |
8990e307 LW |
7599 | return oldsavestack_ix; |
7600 | } | |
7601 | ||
084592ab CN |
7602 | #ifdef __SC__ |
7603 | #pragma segment Perl_yylex | |
7604 | #endif | |
8990e307 | 7605 | int |
864dbfa3 | 7606 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7607 | { |
faef0170 | 7608 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7609 | yyerror(s); |
faef0170 | 7610 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7611 | return 0; |
8990e307 LW |
7612 | } |
7613 | ||
7614 | int | |
864dbfa3 | 7615 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7616 | { |
68dc0745 | 7617 | char *where = NULL; |
7618 | char *context = NULL; | |
7619 | int contlen = -1; | |
46fc3d4c | 7620 | SV *msg; |
463ee0b2 | 7621 | |
3280af22 | 7622 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7623 | where = "at EOF"; |
3280af22 NIS |
7624 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7625 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7626 | /* |
7627 | Only for NetWare: | |
7628 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7629 | when the script has error such as not having the closing quotes like: | |
7630 | if ($var eq "value) | |
7631 | Checking of white spaces is anyway done in NetWare code. | |
7632 | */ | |
7633 | #ifndef NETWARE | |
3280af22 NIS |
7634 | while (isSPACE(*PL_oldoldbufptr)) |
7635 | PL_oldoldbufptr++; | |
f355267c | 7636 | #endif |
3280af22 NIS |
7637 | context = PL_oldoldbufptr; |
7638 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7639 | } |
3280af22 NIS |
7640 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7641 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7642 | /* |
7643 | Only for NetWare: | |
7644 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7645 | when the script has error such as not having the closing quotes like: | |
7646 | if ($var eq "value) | |
7647 | Checking of white spaces is anyway done in NetWare code. | |
7648 | */ | |
7649 | #ifndef NETWARE | |
3280af22 NIS |
7650 | while (isSPACE(*PL_oldbufptr)) |
7651 | PL_oldbufptr++; | |
f355267c | 7652 | #endif |
3280af22 NIS |
7653 | context = PL_oldbufptr; |
7654 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7655 | } |
7656 | else if (yychar > 255) | |
68dc0745 | 7657 | where = "next token ???"; |
cdfb297e GS |
7658 | #ifdef USE_PURE_BISON |
7659 | /* GNU Bison sets the value -2 */ | |
7660 | else if (yychar == -2) { | |
7661 | #else | |
463ee0b2 | 7662 | else if ((yychar & 127) == 127) { |
cdfb297e | 7663 | #endif |
3280af22 NIS |
7664 | if (PL_lex_state == LEX_NORMAL || |
7665 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7666 | where = "at end of line"; |
3280af22 | 7667 | else if (PL_lex_inpat) |
68dc0745 | 7668 | where = "within pattern"; |
463ee0b2 | 7669 | else |
68dc0745 | 7670 | where = "within string"; |
463ee0b2 | 7671 | } |
46fc3d4c | 7672 | else { |
79cb57f6 | 7673 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7674 | if (yychar < 32) |
cea2e8a9 | 7675 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7676 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7677 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7678 | else |
cea2e8a9 | 7679 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7680 | where = SvPVX(where_sv); |
463ee0b2 | 7681 | } |
46fc3d4c | 7682 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 7683 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 7684 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 7685 | if (context) |
cea2e8a9 | 7686 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7687 | else |
cea2e8a9 | 7688 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7689 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7690 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7691 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7692 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7693 | PL_multi_end = 0; |
a0d0e21e | 7694 | } |
faef0170 | 7695 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7696 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7697 | else |
5a844595 | 7698 | qerror(msg); |
c7d6bfb2 GS |
7699 | if (PL_error_count >= 10) { |
7700 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 7701 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
248c2a4d | 7702 | ERRSV, OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
7703 | else |
7704 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 7705 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 7706 | } |
3280af22 NIS |
7707 | PL_in_my = 0; |
7708 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7709 | return 0; |
7710 | } | |
084592ab CN |
7711 | #ifdef __SC__ |
7712 | #pragma segment Main | |
7713 | #endif | |
4e35701f | 7714 | |
b250498f | 7715 | STATIC char* |
3ae08724 | 7716 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 7717 | { |
b250498f GS |
7718 | STRLEN slen; |
7719 | slen = SvCUR(PL_linestr); | |
7720 | switch (*s) { | |
4e553d73 NIS |
7721 | case 0xFF: |
7722 | if (s[1] == 0xFE) { | |
01ec43d0 | 7723 | /* UTF-16 little-endian */ |
3ae08724 | 7724 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
01ec43d0 GS |
7725 | Perl_croak(aTHX_ "Unsupported script encoding"); |
7726 | #ifndef PERL_NO_UTF16_FILTER | |
dea0fc0b | 7727 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-LE script encoding\n")); |
3ae08724 | 7728 | s += 2; |
dea0fc0b JH |
7729 | if (PL_bufend > (char*)s) { |
7730 | U8 *news; | |
7731 | I32 newlen; | |
7732 | ||
7733 | filter_add(utf16rev_textfilter, NULL); | |
7734 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
f72f5f89 JH |
7735 | PL_bufend = (char*)utf16_to_utf8_reversed(s, news, |
7736 | PL_bufend - (char*)s - 1, | |
dea0fc0b JH |
7737 | &newlen); |
7738 | Copy(news, s, newlen, U8); | |
7739 | SvCUR_set(PL_linestr, newlen); | |
7740 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7741 | news[newlen++] = '\0'; | |
7742 | Safefree(news); | |
7743 | } | |
b250498f | 7744 | #else |
01ec43d0 | 7745 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7746 | #endif |
01ec43d0 GS |
7747 | } |
7748 | break; | |
78ae23f5 | 7749 | case 0xFE: |
3ae08724 | 7750 | if (s[1] == 0xFF) { /* UTF-16 big-endian */ |
01ec43d0 | 7751 | #ifndef PERL_NO_UTF16_FILTER |
dea0fc0b JH |
7752 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding\n")); |
7753 | s += 2; | |
7754 | if (PL_bufend > (char *)s) { | |
7755 | U8 *news; | |
7756 | I32 newlen; | |
7757 | ||
7758 | filter_add(utf16_textfilter, NULL); | |
7759 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
7760 | PL_bufend = (char*)utf16_to_utf8(s, news, | |
7761 | PL_bufend - (char*)s, | |
7762 | &newlen); | |
7763 | Copy(news, s, newlen, U8); | |
7764 | SvCUR_set(PL_linestr, newlen); | |
7765 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7766 | news[newlen++] = '\0'; | |
7767 | Safefree(news); | |
7768 | } | |
b250498f | 7769 | #else |
01ec43d0 | 7770 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7771 | #endif |
01ec43d0 GS |
7772 | } |
7773 | break; | |
3ae08724 GS |
7774 | case 0xEF: |
7775 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
dea0fc0b | 7776 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-8 script encoding\n")); |
01ec43d0 GS |
7777 | s += 3; /* UTF-8 */ |
7778 | } | |
7779 | break; | |
7780 | case 0: | |
7781 | if (slen > 3 && s[1] == 0 && /* UTF-32 big-endian */ | |
3ae08724 | 7782 | s[2] == 0xFE && s[3] == 0xFF) |
01ec43d0 GS |
7783 | { |
7784 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7785 | } | |
7786 | } | |
b8f84bb2 | 7787 | return (char*)s; |
b250498f | 7788 | } |
4755096e | 7789 | |
4755096e GS |
7790 | /* |
7791 | * restore_rsfp | |
7792 | * Restore a source filter. | |
7793 | */ | |
7794 | ||
7795 | static void | |
acfe0abc | 7796 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
7797 | { |
7798 | PerlIO *fp = (PerlIO*)f; | |
7799 | ||
7800 | if (PL_rsfp == PerlIO_stdin()) | |
7801 | PerlIO_clearerr(PL_rsfp); | |
7802 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7803 | PerlIO_close(PL_rsfp); | |
7804 | PL_rsfp = fp; | |
7805 | } | |
6e3aabd6 GS |
7806 | |
7807 | #ifndef PERL_NO_UTF16_FILTER | |
7808 | static I32 | |
acfe0abc | 7809 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7810 | { |
7811 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7812 | if (count) { | |
7813 | U8* tmps; | |
7814 | U8* tend; | |
dea0fc0b | 7815 | I32 newlen; |
6e3aabd6 | 7816 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
f72f5f89 JH |
7817 | if (!*SvPV_nolen(sv)) |
7818 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7819 | return count; | |
4e553d73 | 7820 | |
dea0fc0b | 7821 | tend = utf16_to_utf8((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7822 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7823 | } | |
7824 | return count; | |
7825 | } | |
7826 | ||
7827 | static I32 | |
acfe0abc | 7828 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7829 | { |
7830 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7831 | if (count) { | |
7832 | U8* tmps; | |
7833 | U8* tend; | |
dea0fc0b | 7834 | I32 newlen; |
f72f5f89 JH |
7835 | if (!*SvPV_nolen(sv)) |
7836 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7837 | return count; | |
7838 | ||
6e3aabd6 | 7839 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
dea0fc0b | 7840 | tend = utf16_to_utf8_reversed((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7841 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7842 | } | |
7843 | return count; | |
7844 | } | |
7845 | #endif | |
9f4817db | 7846 |