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