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"; |
8903cb82 | 29 | |
acfe0abc | 30 | static void restore_rsfp(pTHX_ void *f); |
6e3aabd6 | 31 | #ifndef PERL_NO_UTF16_FILTER |
acfe0abc GS |
32 | static I32 utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen); |
33 | static I32 utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen); | |
6e3aabd6 | 34 | #endif |
51371543 | 35 | |
9059aa12 LW |
36 | #define XFAKEBRACK 128 |
37 | #define XENUMMASK 127 | |
38 | ||
39e02b42 JH |
39 | #ifdef USE_UTF8_SCRIPTS |
40 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 41 | #else |
39e02b42 JH |
42 | # ifdef EBCDIC /* For now 'use utf8' does not affect tokenizer on EBCDIC */ |
43 | # define UTF (PL_linestr && DO_UTF8(PL_linestr)) | |
44 | # else | |
45 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8)) | |
46 | # endif | |
2b9d42f0 | 47 | #endif |
a0ed51b3 | 48 | |
61f0cdd9 | 49 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
50 | * 1999-02-27 mjd-perl-patch@plover.com */ |
51 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
52 | ||
bf4acbe4 GS |
53 | /* On MacOS, respect nonbreaking spaces */ |
54 | #ifdef MACOS_TRADITIONAL | |
55 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\312'||(c)=='\t') | |
56 | #else | |
57 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') | |
58 | #endif | |
59 | ||
ffb4593c NT |
60 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
61 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
62 | * can get by with a single comparison (if the compiler is smart enough). |
63 | */ | |
64 | ||
fb73857a | 65 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
66 | ||
55497cff | 67 | #define LEX_NORMAL 10 |
68 | #define LEX_INTERPNORMAL 9 | |
69 | #define LEX_INTERPCASEMOD 8 | |
70 | #define LEX_INTERPPUSH 7 | |
71 | #define LEX_INTERPSTART 6 | |
72 | #define LEX_INTERPEND 5 | |
73 | #define LEX_INTERPENDMAYBE 4 | |
74 | #define LEX_INTERPCONCAT 3 | |
75 | #define LEX_INTERPCONST 2 | |
76 | #define LEX_FORMLINE 1 | |
77 | #define LEX_KNOWNEXT 0 | |
79072805 | 78 | |
79072805 LW |
79 | #ifdef ff_next |
80 | #undef ff_next | |
d48672a2 LW |
81 | #endif |
82 | ||
a1a0e61e | 83 | #ifdef USE_PURE_BISON |
dba4d153 JH |
84 | # ifndef YYMAXLEVEL |
85 | # define YYMAXLEVEL 100 | |
86 | # endif | |
20141f0e IRC |
87 | YYSTYPE* yylval_pointer[YYMAXLEVEL]; |
88 | int* yychar_pointer[YYMAXLEVEL]; | |
6f202aea | 89 | int yyactlevel = -1; |
22c35a8c GS |
90 | # undef yylval |
91 | # undef yychar | |
20141f0e IRC |
92 | # define yylval (*yylval_pointer[yyactlevel]) |
93 | # define yychar (*yychar_pointer[yyactlevel]) | |
94 | # define PERL_YYLEX_PARAM yylval_pointer[yyactlevel],yychar_pointer[yyactlevel] | |
4e553d73 | 95 | # undef yylex |
dba4d153 | 96 | # define yylex() Perl_yylex_r(aTHX_ yylval_pointer[yyactlevel],yychar_pointer[yyactlevel]) |
a1a0e61e TD |
97 | #endif |
98 | ||
79072805 | 99 | #include "keywords.h" |
fe14fcc3 | 100 | |
ffb4593c NT |
101 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
102 | ||
ae986130 LW |
103 | #ifdef CLINE |
104 | #undef CLINE | |
105 | #endif | |
57843af0 | 106 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 107 | |
ffb4593c NT |
108 | /* |
109 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 110 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
111 | * |
112 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
113 | * OPERATOR : generic operator | |
114 | * AOPERATOR : assignment operator | |
115 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
116 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
117 | * PREREF : *EXPR where EXPR is not a simple identifier | |
118 | * TERM : expression term | |
119 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
120 | * FTST : file test operator | |
121 | * FUN0 : zero-argument function | |
2d2e263d | 122 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
123 | * BOop : bitwise or or xor |
124 | * BAop : bitwise and | |
125 | * SHop : shift operator | |
126 | * PWop : power operator | |
9cbb5ea2 | 127 | * PMop : pattern-matching operator |
ffb4593c NT |
128 | * Aop : addition-level operator |
129 | * Mop : multiplication-level operator | |
130 | * Eop : equality-testing operator | |
e5edeb50 | 131 | * Rop : relational operator <= != gt |
ffb4593c NT |
132 | * |
133 | * Also see LOP and lop() below. | |
134 | */ | |
135 | ||
075953c3 JH |
136 | /* Note that REPORT() and REPORT2() will be expressions that supply |
137 | * their own trailing comma, not suitable for statements as such. */ | |
998054bd | 138 | #ifdef DEBUGGING /* Serve -DT. */ |
075953c3 JH |
139 | # define REPORT(x,retval) tokereport(x,s,(int)retval), |
140 | # define REPORT2(x,retval) tokereport(x,s, yylval.ival), | |
998054bd | 141 | #else |
075953c3 JH |
142 | # define REPORT(x,retval) |
143 | # define REPORT2(x,retval) | |
998054bd SC |
144 | #endif |
145 | ||
075953c3 JH |
146 | #define TOKEN(retval) return (REPORT2("token",retval) PL_bufptr = s,(int)retval) |
147 | #define OPERATOR(retval) return (REPORT2("operator",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval) | |
148 | #define AOPERATOR(retval) return ao((REPORT2("aop",retval) PL_expect = XTERM, PL_bufptr = s,(int)retval)) | |
149 | #define PREBLOCK(retval) return (REPORT2("preblock",retval) PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
150 | #define PRETERMBLOCK(retval) return (REPORT2("pretermblock",retval) PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
151 | #define PREREF(retval) return (REPORT2("preref",retval) PL_expect = XREF,PL_bufptr = s,(int)retval) | |
152 | #define TERM(retval) return (CLINE, REPORT2("term",retval) PL_expect = XOPERATOR, PL_bufptr = s,(int)retval) | |
153 | #define LOOPX(f) return(yylval.ival=f, REPORT("loopx",f) PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
154 | #define FTST(f) return(yylval.ival=f, REPORT("ftst",f) PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
155 | #define FUN0(f) return(yylval.ival = f, REPORT("fun0",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
156 | #define FUN1(f) return(yylval.ival = f, REPORT("fun1",f) PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
157 | #define BOop(f) return ao((yylval.ival=f, REPORT("bitorop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
158 | #define BAop(f) return ao((yylval.ival=f, REPORT("bitandop",f) PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
159 | #define SHop(f) return ao((yylval.ival=f, REPORT("shiftop",f) PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
160 | #define PWop(f) return ao((yylval.ival=f, REPORT("powop",f) PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
161 | #define PMop(f) return(yylval.ival=f, REPORT("matchop",f) PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
162 | #define Aop(f) return ao((yylval.ival=f, REPORT("add",f) PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
163 | #define Mop(f) return ao((yylval.ival=f, REPORT("mul",f) PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
164 | #define Eop(f) return(yylval.ival=f, REPORT("eq",f) PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
165 | #define Rop(f) return(yylval.ival=f, REPORT("rel",f) PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 166 | |
a687059c LW |
167 | /* This bit of chicanery makes a unary function followed by |
168 | * a parenthesis into a function with one argument, highest precedence. | |
169 | */ | |
2f3197b3 | 170 | #define UNI(f) return(yylval.ival = f, \ |
075953c3 | 171 | REPORT("uni",f) \ |
3280af22 NIS |
172 | PL_expect = XTERM, \ |
173 | PL_bufptr = s, \ | |
174 | PL_last_uni = PL_oldbufptr, \ | |
175 | PL_last_lop_op = f, \ | |
a687059c LW |
176 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
177 | ||
79072805 | 178 | #define UNIBRACK(f) return(yylval.ival = f, \ |
075953c3 | 179 | REPORT("uni",f) \ |
3280af22 NIS |
180 | PL_bufptr = s, \ |
181 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
182 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
183 | ||
9f68db38 | 184 | /* grandfather return to old style */ |
3280af22 | 185 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 186 | |
8fa7f367 JH |
187 | #ifdef DEBUGGING |
188 | ||
2d00ba3b | 189 | STATIC void |
61b2116b | 190 | S_tokereport(pTHX_ char *thing, char* s, I32 rv) |
9041c2e3 | 191 | { |
998054bd | 192 | DEBUG_T({ |
9c5ffd7c | 193 | SV* report = newSVpv(thing, 0); |
29b291f7 RB |
194 | Perl_sv_catpvf(aTHX_ report, ":line %d:%"IVdf":", CopLINE(PL_curcop), |
195 | (IV)rv); | |
998054bd SC |
196 | |
197 | if (s - PL_bufptr > 0) | |
198 | sv_catpvn(report, PL_bufptr, s - PL_bufptr); | |
199 | else { | |
200 | if (PL_oldbufptr && *PL_oldbufptr) | |
201 | sv_catpv(report, PL_tokenbuf); | |
202 | } | |
203 | PerlIO_printf(Perl_debug_log, "### %s\n", SvPV_nolen(report)); | |
5f80b19c | 204 | }); |
998054bd SC |
205 | } |
206 | ||
8fa7f367 JH |
207 | #endif |
208 | ||
ffb4593c NT |
209 | /* |
210 | * S_ao | |
211 | * | |
212 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
213 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
214 | */ | |
215 | ||
76e3520e | 216 | STATIC int |
cea2e8a9 | 217 | S_ao(pTHX_ int toketype) |
a0d0e21e | 218 | { |
3280af22 NIS |
219 | if (*PL_bufptr == '=') { |
220 | PL_bufptr++; | |
a0d0e21e LW |
221 | if (toketype == ANDAND) |
222 | yylval.ival = OP_ANDASSIGN; | |
223 | else if (toketype == OROR) | |
224 | yylval.ival = OP_ORASSIGN; | |
225 | toketype = ASSIGNOP; | |
226 | } | |
227 | return toketype; | |
228 | } | |
229 | ||
ffb4593c NT |
230 | /* |
231 | * S_no_op | |
232 | * When Perl expects an operator and finds something else, no_op | |
233 | * prints the warning. It always prints "<something> found where | |
234 | * operator expected. It prints "Missing semicolon on previous line?" | |
235 | * if the surprise occurs at the start of the line. "do you need to | |
236 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
237 | * where the compiler doesn't know if foo is a method call or a function. | |
238 | * It prints "Missing operator before end of line" if there's nothing | |
239 | * after the missing operator, or "... before <...>" if there is something | |
240 | * after the missing operator. | |
241 | */ | |
242 | ||
76e3520e | 243 | STATIC void |
cea2e8a9 | 244 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 245 | { |
3280af22 NIS |
246 | char *oldbp = PL_bufptr; |
247 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 248 | |
1189a94a GS |
249 | if (!s) |
250 | s = oldbp; | |
07c798fb | 251 | else |
1189a94a | 252 | PL_bufptr = s; |
cea2e8a9 | 253 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 254 | if (is_first) |
cea2e8a9 | 255 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 256 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 257 | char *t; |
7e2040f0 | 258 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 259 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 260 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 261 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 | 262 | } |
07c798fb HS |
263 | else { |
264 | assert(s >= oldbp); | |
cea2e8a9 | 265 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
07c798fb | 266 | } |
3280af22 | 267 | PL_bufptr = oldbp; |
8990e307 LW |
268 | } |
269 | ||
ffb4593c NT |
270 | /* |
271 | * S_missingterm | |
272 | * Complain about missing quote/regexp/heredoc terminator. | |
273 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
274 | * If we're in a delimited string and the delimiter is a control | |
275 | * character, it's reformatted into a two-char sequence like ^C. | |
276 | * This is fatal. | |
277 | */ | |
278 | ||
76e3520e | 279 | STATIC void |
cea2e8a9 | 280 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
281 | { |
282 | char tmpbuf[3]; | |
283 | char q; | |
284 | if (s) { | |
285 | char *nl = strrchr(s,'\n'); | |
d2719217 | 286 | if (nl) |
8990e307 LW |
287 | *nl = '\0'; |
288 | } | |
9d116dd7 JH |
289 | else if ( |
290 | #ifdef EBCDIC | |
291 | iscntrl(PL_multi_close) | |
292 | #else | |
293 | PL_multi_close < 32 || PL_multi_close == 127 | |
294 | #endif | |
295 | ) { | |
8990e307 | 296 | *tmpbuf = '^'; |
3280af22 | 297 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
298 | s = "\\n"; |
299 | tmpbuf[2] = '\0'; | |
300 | s = tmpbuf; | |
301 | } | |
302 | else { | |
3280af22 | 303 | *tmpbuf = PL_multi_close; |
8990e307 LW |
304 | tmpbuf[1] = '\0'; |
305 | s = tmpbuf; | |
306 | } | |
307 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 308 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 309 | } |
79072805 | 310 | |
ffb4593c NT |
311 | /* |
312 | * Perl_deprecate | |
ffb4593c NT |
313 | */ |
314 | ||
79072805 | 315 | void |
864dbfa3 | 316 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 317 | { |
599cee73 | 318 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 319 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
320 | } |
321 | ||
ffb4593c NT |
322 | /* |
323 | * depcom | |
9cbb5ea2 | 324 | * Deprecate a comma-less variable list. |
ffb4593c NT |
325 | */ |
326 | ||
76e3520e | 327 | STATIC void |
cea2e8a9 | 328 | S_depcom(pTHX) |
a0d0e21e LW |
329 | { |
330 | deprecate("comma-less variable list"); | |
331 | } | |
332 | ||
ffb4593c | 333 | /* |
9cbb5ea2 GS |
334 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
335 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
336 | */ |
337 | ||
c39cd008 GS |
338 | #ifdef PERL_CR_FILTER |
339 | static void | |
340 | strip_return(SV *sv) | |
341 | { | |
342 | register char *s = SvPVX(sv); | |
343 | register char *e = s + SvCUR(sv); | |
344 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
345 | while (s < e) { | |
346 | if (*s++ == '\r' && *s == '\n') { | |
347 | /* hit a CR-LF, need to copy the rest */ | |
348 | register char *d = s - 1; | |
349 | *d++ = *s++; | |
350 | while (s < e) { | |
351 | if (*s == '\r' && s[1] == '\n') | |
352 | s++; | |
353 | *d++ = *s++; | |
354 | } | |
355 | SvCUR(sv) -= s - d; | |
356 | return; | |
357 | } | |
358 | } | |
359 | } | |
a868473f | 360 | |
76e3520e | 361 | STATIC I32 |
c39cd008 | 362 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 363 | { |
c39cd008 GS |
364 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
365 | if (count > 0 && !maxlen) | |
366 | strip_return(sv); | |
367 | return count; | |
a868473f NIS |
368 | } |
369 | #endif | |
370 | ||
ffb4593c NT |
371 | /* |
372 | * Perl_lex_start | |
9cbb5ea2 GS |
373 | * Initialize variables. Uses the Perl save_stack to save its state (for |
374 | * recursive calls to the parser). | |
ffb4593c NT |
375 | */ |
376 | ||
a0d0e21e | 377 | void |
864dbfa3 | 378 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 379 | { |
8990e307 LW |
380 | char *s; |
381 | STRLEN len; | |
382 | ||
3280af22 NIS |
383 | SAVEI32(PL_lex_dojoin); |
384 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
385 | SAVEI32(PL_lex_casemods); |
386 | SAVEI32(PL_lex_starts); | |
387 | SAVEI32(PL_lex_state); | |
7766f137 | 388 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 389 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
390 | if (PL_lex_state == LEX_KNOWNEXT) { |
391 | I32 toke = PL_nexttoke; | |
392 | while (--toke >= 0) { | |
393 | SAVEI32(PL_nexttype[toke]); | |
394 | SAVEVPTR(PL_nextval[toke]); | |
395 | } | |
396 | SAVEI32(PL_nexttoke); | |
18b09519 | 397 | } |
57843af0 | 398 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
399 | SAVEPPTR(PL_bufptr); |
400 | SAVEPPTR(PL_bufend); | |
401 | SAVEPPTR(PL_oldbufptr); | |
402 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
403 | SAVEPPTR(PL_last_lop); |
404 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
405 | SAVEPPTR(PL_linestart); |
406 | SAVESPTR(PL_linestr); | |
407 | SAVEPPTR(PL_lex_brackstack); | |
408 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 409 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
410 | SAVESPTR(PL_lex_stuff); |
411 | SAVEI32(PL_lex_defer); | |
09bef843 | 412 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 413 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
414 | SAVEINT(PL_expect); |
415 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
416 | |
417 | PL_lex_state = LEX_NORMAL; | |
418 | PL_lex_defer = 0; | |
419 | PL_expect = XSTATE; | |
420 | PL_lex_brackets = 0; | |
3280af22 NIS |
421 | New(899, PL_lex_brackstack, 120, char); |
422 | New(899, PL_lex_casestack, 12, char); | |
423 | SAVEFREEPV(PL_lex_brackstack); | |
424 | SAVEFREEPV(PL_lex_casestack); | |
425 | PL_lex_casemods = 0; | |
426 | *PL_lex_casestack = '\0'; | |
427 | PL_lex_dojoin = 0; | |
428 | PL_lex_starts = 0; | |
429 | PL_lex_stuff = Nullsv; | |
430 | PL_lex_repl = Nullsv; | |
431 | PL_lex_inpat = 0; | |
76be56bc | 432 | PL_nexttoke = 0; |
3280af22 | 433 | PL_lex_inwhat = 0; |
09bef843 | 434 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
435 | PL_linestr = line; |
436 | if (SvREADONLY(PL_linestr)) | |
437 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
438 | s = SvPV(PL_linestr, len); | |
8990e307 | 439 | if (len && s[len-1] != ';') { |
3280af22 NIS |
440 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
441 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
442 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 443 | } |
3280af22 NIS |
444 | SvTEMP_off(PL_linestr); |
445 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
446 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 447 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 448 | PL_rsfp = 0; |
79072805 | 449 | } |
a687059c | 450 | |
ffb4593c NT |
451 | /* |
452 | * Perl_lex_end | |
9cbb5ea2 GS |
453 | * Finalizer for lexing operations. Must be called when the parser is |
454 | * done with the lexer. | |
ffb4593c NT |
455 | */ |
456 | ||
463ee0b2 | 457 | void |
864dbfa3 | 458 | Perl_lex_end(pTHX) |
463ee0b2 | 459 | { |
3280af22 | 460 | PL_doextract = FALSE; |
463ee0b2 LW |
461 | } |
462 | ||
ffb4593c NT |
463 | /* |
464 | * S_incline | |
465 | * This subroutine has nothing to do with tilting, whether at windmills | |
466 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 467 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 468 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
469 | * # line 500 "foo.pm" |
470 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
471 | */ |
472 | ||
76e3520e | 473 | STATIC void |
cea2e8a9 | 474 | S_incline(pTHX_ char *s) |
463ee0b2 LW |
475 | { |
476 | char *t; | |
477 | char *n; | |
73659bf1 | 478 | char *e; |
463ee0b2 | 479 | char ch; |
463ee0b2 | 480 | |
57843af0 | 481 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
482 | if (*s++ != '#') |
483 | return; | |
bf4acbe4 | 484 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
485 | if (strnEQ(s, "line", 4)) |
486 | s += 4; | |
487 | else | |
488 | return; | |
084592ab | 489 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 490 | s++; |
4e553d73 | 491 | else |
73659bf1 | 492 | return; |
bf4acbe4 | 493 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
494 | if (!isDIGIT(*s)) |
495 | return; | |
496 | n = s; | |
497 | while (isDIGIT(*s)) | |
498 | s++; | |
bf4acbe4 | 499 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 500 | s++; |
73659bf1 | 501 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 502 | s++; |
73659bf1 GS |
503 | e = t + 1; |
504 | } | |
463ee0b2 | 505 | else { |
463ee0b2 | 506 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 507 | e = t; |
463ee0b2 | 508 | } |
bf4acbe4 | 509 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
510 | e++; |
511 | if (*e != '\n' && *e != '\0') | |
512 | return; /* false alarm */ | |
513 | ||
463ee0b2 LW |
514 | ch = *t; |
515 | *t = '\0'; | |
f4dd75d9 | 516 | if (t - s > 0) { |
05ec9bb3 | 517 | CopFILE_free(PL_curcop); |
57843af0 | 518 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 519 | } |
463ee0b2 | 520 | *t = ch; |
57843af0 | 521 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
522 | } |
523 | ||
ffb4593c NT |
524 | /* |
525 | * S_skipspace | |
526 | * Called to gobble the appropriate amount and type of whitespace. | |
527 | * Skips comments as well. | |
528 | */ | |
529 | ||
76e3520e | 530 | STATIC char * |
cea2e8a9 | 531 | S_skipspace(pTHX_ register char *s) |
a687059c | 532 | { |
3280af22 | 533 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 534 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
535 | s++; |
536 | return s; | |
537 | } | |
538 | for (;;) { | |
fd049845 | 539 | STRLEN prevlen; |
09bef843 | 540 | SSize_t oldprevlen, oldoldprevlen; |
9c5ffd7c | 541 | SSize_t oldloplen = 0, oldunilen = 0; |
60e6418e GS |
542 | while (s < PL_bufend && isSPACE(*s)) { |
543 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
544 | incline(s); | |
545 | } | |
ffb4593c NT |
546 | |
547 | /* comment */ | |
3280af22 NIS |
548 | if (s < PL_bufend && *s == '#') { |
549 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 550 | s++; |
60e6418e | 551 | if (s < PL_bufend) { |
463ee0b2 | 552 | s++; |
60e6418e GS |
553 | if (PL_in_eval && !PL_rsfp) { |
554 | incline(s); | |
555 | continue; | |
556 | } | |
557 | } | |
463ee0b2 | 558 | } |
ffb4593c NT |
559 | |
560 | /* only continue to recharge the buffer if we're at the end | |
561 | * of the buffer, we're not reading from a source filter, and | |
562 | * we're in normal lexing mode | |
563 | */ | |
09bef843 SB |
564 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
565 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 566 | return s; |
ffb4593c NT |
567 | |
568 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
569 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
570 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
571 | { | |
572 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
573 | if (PL_minus_n || PL_minus_p) { |
574 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
575 | ";}continue{print or die qq(-p destination: $!\\n)" : |
576 | ""); | |
3280af22 NIS |
577 | sv_catpv(PL_linestr,";}"); |
578 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
579 | } |
580 | else | |
3280af22 | 581 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
582 | |
583 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
584 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
585 | = SvPVX(PL_linestr); | |
3280af22 | 586 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 587 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
588 | |
589 | /* Close the filehandle. Could be from -P preprocessor, | |
590 | * STDIN, or a regular file. If we were reading code from | |
591 | * STDIN (because the commandline held no -e or filename) | |
592 | * then we don't close it, we reset it so the code can | |
593 | * read from STDIN too. | |
594 | */ | |
595 | ||
3280af22 NIS |
596 | if (PL_preprocess && !PL_in_eval) |
597 | (void)PerlProc_pclose(PL_rsfp); | |
598 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
599 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 600 | else |
3280af22 NIS |
601 | (void)PerlIO_close(PL_rsfp); |
602 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
603 | return s; |
604 | } | |
ffb4593c NT |
605 | |
606 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
607 | /* make corresponding updates to old pointers, for yyerror() */ |
608 | oldprevlen = PL_oldbufptr - PL_bufend; | |
609 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
610 | if (PL_last_uni) | |
611 | oldunilen = PL_last_uni - PL_bufend; | |
612 | if (PL_last_lop) | |
613 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
614 | PL_linestart = PL_bufptr = s + prevlen; |
615 | PL_bufend = s + SvCUR(PL_linestr); | |
616 | s = PL_bufptr; | |
09bef843 SB |
617 | PL_oldbufptr = s + oldprevlen; |
618 | PL_oldoldbufptr = s + oldoldprevlen; | |
619 | if (PL_last_uni) | |
620 | PL_last_uni = s + oldunilen; | |
621 | if (PL_last_lop) | |
622 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 623 | incline(s); |
ffb4593c NT |
624 | |
625 | /* debugger active and we're not compiling the debugger code, | |
626 | * so store the line into the debugger's array of lines | |
627 | */ | |
3280af22 | 628 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
629 | SV *sv = NEWSV(85,0); |
630 | ||
631 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 632 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
633 | (void)SvIOK_on(sv); |
634 | SvIVX(sv) = 0; | |
57843af0 | 635 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 636 | } |
463ee0b2 | 637 | } |
a687059c | 638 | } |
378cc40b | 639 | |
ffb4593c NT |
640 | /* |
641 | * S_check_uni | |
642 | * Check the unary operators to ensure there's no ambiguity in how they're | |
643 | * used. An ambiguous piece of code would be: | |
644 | * rand + 5 | |
645 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
646 | * the +5 is its argument. | |
647 | */ | |
648 | ||
76e3520e | 649 | STATIC void |
cea2e8a9 | 650 | S_check_uni(pTHX) |
ba106d47 | 651 | { |
2f3197b3 | 652 | char *s; |
a0d0e21e | 653 | char *t; |
2f3197b3 | 654 | |
3280af22 | 655 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 656 | return; |
3280af22 NIS |
657 | while (isSPACE(*PL_last_uni)) |
658 | PL_last_uni++; | |
7e2040f0 | 659 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 660 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 661 | return; |
0453d815 | 662 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 663 | char ch = *s; |
0453d815 | 664 | *s = '\0'; |
4e553d73 NIS |
665 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
666 | "Warning: Use of \"%s\" without parens is ambiguous", | |
0453d815 PM |
667 | PL_last_uni); |
668 | *s = ch; | |
669 | } | |
2f3197b3 LW |
670 | } |
671 | ||
ffb4593c NT |
672 | /* workaround to replace the UNI() macro with a function. Only the |
673 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
674 | * source indicate Microport Unix might need it too. | |
675 | */ | |
676 | ||
ffed7fef LW |
677 | #ifdef CRIPPLED_CC |
678 | ||
679 | #undef UNI | |
ffed7fef | 680 | #define UNI(f) return uni(f,s) |
ffed7fef | 681 | |
76e3520e | 682 | STATIC int |
cea2e8a9 | 683 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
684 | { |
685 | yylval.ival = f; | |
3280af22 NIS |
686 | PL_expect = XTERM; |
687 | PL_bufptr = s; | |
8f872242 NIS |
688 | PL_last_uni = PL_oldbufptr; |
689 | PL_last_lop_op = f; | |
ffed7fef LW |
690 | if (*s == '(') |
691 | return FUNC1; | |
692 | s = skipspace(s); | |
693 | if (*s == '(') | |
694 | return FUNC1; | |
695 | else | |
696 | return UNIOP; | |
697 | } | |
698 | ||
a0d0e21e LW |
699 | #endif /* CRIPPLED_CC */ |
700 | ||
ffb4593c NT |
701 | /* |
702 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
703 | * with a subroutine, S_lop() for which LOP is just another name. | |
704 | */ | |
705 | ||
a0d0e21e LW |
706 | #define LOP(f,x) return lop(f,x,s) |
707 | ||
ffb4593c NT |
708 | /* |
709 | * S_lop | |
710 | * Build a list operator (or something that might be one). The rules: | |
711 | * - if we have a next token, then it's a list operator [why?] | |
712 | * - if the next thing is an opening paren, then it's a function | |
713 | * - else it's a list operator | |
714 | */ | |
715 | ||
76e3520e | 716 | STATIC I32 |
a0be28da | 717 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 718 | { |
79072805 | 719 | yylval.ival = f; |
35c8bce7 | 720 | CLINE; |
075953c3 | 721 | REPORT("lop", f) |
3280af22 NIS |
722 | PL_expect = x; |
723 | PL_bufptr = s; | |
724 | PL_last_lop = PL_oldbufptr; | |
725 | PL_last_lop_op = f; | |
726 | if (PL_nexttoke) | |
a0d0e21e | 727 | return LSTOP; |
79072805 LW |
728 | if (*s == '(') |
729 | return FUNC; | |
730 | s = skipspace(s); | |
731 | if (*s == '(') | |
732 | return FUNC; | |
733 | else | |
734 | return LSTOP; | |
735 | } | |
736 | ||
ffb4593c NT |
737 | /* |
738 | * S_force_next | |
9cbb5ea2 | 739 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 740 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
741 | * to know what token to return the next time the lexer is called. Caller |
742 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
743 | * handles the token correctly. | |
ffb4593c NT |
744 | */ |
745 | ||
4e553d73 | 746 | STATIC void |
cea2e8a9 | 747 | S_force_next(pTHX_ I32 type) |
79072805 | 748 | { |
3280af22 NIS |
749 | PL_nexttype[PL_nexttoke] = type; |
750 | PL_nexttoke++; | |
751 | if (PL_lex_state != LEX_KNOWNEXT) { | |
752 | PL_lex_defer = PL_lex_state; | |
753 | PL_lex_expect = PL_expect; | |
754 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
755 | } |
756 | } | |
757 | ||
ffb4593c NT |
758 | /* |
759 | * S_force_word | |
760 | * When the lexer knows the next thing is a word (for instance, it has | |
761 | * just seen -> and it knows that the next char is a word char, then | |
762 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
763 | * | |
764 | * Arguments: | |
b1b65b59 | 765 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
766 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
767 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
768 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
769 | * int allow_pack : if true, : characters will also be allowed (require, | |
770 | * use, etc. do this) | |
9cbb5ea2 | 771 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
772 | */ |
773 | ||
76e3520e | 774 | STATIC char * |
cea2e8a9 | 775 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 776 | { |
463ee0b2 LW |
777 | register char *s; |
778 | STRLEN len; | |
4e553d73 | 779 | |
463ee0b2 LW |
780 | start = skipspace(start); |
781 | s = start; | |
7e2040f0 | 782 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 783 | (allow_pack && *s == ':') || |
15f0808c | 784 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 785 | { |
3280af22 NIS |
786 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
787 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
788 | return start; |
789 | if (token == METHOD) { | |
790 | s = skipspace(s); | |
791 | if (*s == '(') | |
3280af22 | 792 | PL_expect = XTERM; |
463ee0b2 | 793 | else { |
3280af22 | 794 | PL_expect = XOPERATOR; |
463ee0b2 | 795 | } |
79072805 | 796 | } |
3280af22 NIS |
797 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
798 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
799 | force_next(token); |
800 | } | |
801 | return s; | |
802 | } | |
803 | ||
ffb4593c NT |
804 | /* |
805 | * S_force_ident | |
9cbb5ea2 | 806 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
807 | * text only contains the "foo" portion. The first argument is a pointer |
808 | * to the "foo", and the second argument is the type symbol to prefix. | |
809 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 810 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
811 | */ |
812 | ||
76e3520e | 813 | STATIC void |
cea2e8a9 | 814 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
815 | { |
816 | if (s && *s) { | |
11343788 | 817 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 818 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 819 | force_next(WORD); |
748a9306 | 820 | if (kind) { |
11343788 | 821 | o->op_private = OPpCONST_ENTERED; |
55497cff | 822 | /* XXX see note in pp_entereval() for why we forgo typo |
823 | warnings if the symbol must be introduced in an eval. | |
824 | GSAR 96-10-12 */ | |
3280af22 | 825 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
826 | kind == '$' ? SVt_PV : |
827 | kind == '@' ? SVt_PVAV : | |
828 | kind == '%' ? SVt_PVHV : | |
829 | SVt_PVGV | |
830 | ); | |
748a9306 | 831 | } |
79072805 LW |
832 | } |
833 | } | |
834 | ||
1571675a GS |
835 | NV |
836 | Perl_str_to_version(pTHX_ SV *sv) | |
837 | { | |
838 | NV retval = 0.0; | |
839 | NV nshift = 1.0; | |
840 | STRLEN len; | |
841 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 842 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
843 | char *end = start + len; |
844 | while (start < end) { | |
ba210ebe | 845 | STRLEN skip; |
1571675a GS |
846 | UV n; |
847 | if (utf) | |
9041c2e3 | 848 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
849 | else { |
850 | n = *(U8*)start; | |
851 | skip = 1; | |
852 | } | |
853 | retval += ((NV)n)/nshift; | |
854 | start += skip; | |
855 | nshift *= 1000; | |
856 | } | |
857 | return retval; | |
858 | } | |
859 | ||
4e553d73 | 860 | /* |
ffb4593c NT |
861 | * S_force_version |
862 | * Forces the next token to be a version number. | |
e759cc13 RGS |
863 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
864 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
865 | * must use an alternative parsing method). | |
ffb4593c NT |
866 | */ |
867 | ||
76e3520e | 868 | STATIC char * |
e759cc13 | 869 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 870 | { |
871 | OP *version = Nullop; | |
44dcb63b | 872 | char *d; |
89bfa8cd | 873 | |
874 | s = skipspace(s); | |
875 | ||
44dcb63b | 876 | d = s; |
dd629d5b | 877 | if (*d == 'v') |
44dcb63b | 878 | d++; |
44dcb63b | 879 | if (isDIGIT(*d)) { |
e759cc13 RGS |
880 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
881 | d++; | |
9f3d182e | 882 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 883 | SV *ver; |
b73d6f50 | 884 | s = scan_num(s, &yylval); |
89bfa8cd | 885 | version = yylval.opval; |
dd629d5b GS |
886 | ver = cSVOPx(version)->op_sv; |
887 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 888 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
889 | SvNVX(ver) = str_to_version(ver); |
890 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 891 | } |
89bfa8cd | 892 | } |
e759cc13 RGS |
893 | else if (guessing) |
894 | return s; | |
89bfa8cd | 895 | } |
896 | ||
897 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 898 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 899 | force_next(WORD); |
89bfa8cd | 900 | |
e759cc13 | 901 | return s; |
89bfa8cd | 902 | } |
903 | ||
ffb4593c NT |
904 | /* |
905 | * S_tokeq | |
906 | * Tokenize a quoted string passed in as an SV. It finds the next | |
907 | * chunk, up to end of string or a backslash. It may make a new | |
908 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
909 | * turns \\ into \. | |
910 | */ | |
911 | ||
76e3520e | 912 | STATIC SV * |
cea2e8a9 | 913 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
914 | { |
915 | register char *s; | |
916 | register char *send; | |
917 | register char *d; | |
b3ac6de7 IZ |
918 | STRLEN len = 0; |
919 | SV *pv = sv; | |
79072805 LW |
920 | |
921 | if (!SvLEN(sv)) | |
b3ac6de7 | 922 | goto finish; |
79072805 | 923 | |
a0d0e21e | 924 | s = SvPV_force(sv, len); |
21a311ee | 925 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 926 | goto finish; |
463ee0b2 | 927 | send = s + len; |
79072805 LW |
928 | while (s < send && *s != '\\') |
929 | s++; | |
930 | if (s == send) | |
b3ac6de7 | 931 | goto finish; |
79072805 | 932 | d = s; |
be4731d2 | 933 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 934 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
935 | if (SvUTF8(sv)) |
936 | SvUTF8_on(pv); | |
937 | } | |
79072805 LW |
938 | while (s < send) { |
939 | if (*s == '\\') { | |
a0d0e21e | 940 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
941 | s++; /* all that, just for this */ |
942 | } | |
943 | *d++ = *s++; | |
944 | } | |
945 | *d = '\0'; | |
463ee0b2 | 946 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 947 | finish: |
3280af22 | 948 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 949 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
950 | return sv; |
951 | } | |
952 | ||
ffb4593c NT |
953 | /* |
954 | * Now come three functions related to double-quote context, | |
955 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
956 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
957 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
958 | * to handle functions and concatenation. | |
959 | * They assume that whoever calls them will be setting up a fake | |
960 | * join call, because each subthing puts a ',' after it. This lets | |
961 | * "lower \luPpEr" | |
962 | * become | |
963 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
964 | * | |
965 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
966 | * arguments and join's arguments are created or not). | |
967 | */ | |
968 | ||
969 | /* | |
970 | * S_sublex_start | |
971 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
972 | * | |
973 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
974 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
975 | * | |
976 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
977 | * | |
978 | * Everything else becomes a FUNC. | |
979 | * | |
980 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
981 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
982 | * call to S_sublex_push(). | |
983 | */ | |
984 | ||
76e3520e | 985 | STATIC I32 |
cea2e8a9 | 986 | S_sublex_start(pTHX) |
79072805 LW |
987 | { |
988 | register I32 op_type = yylval.ival; | |
79072805 LW |
989 | |
990 | if (op_type == OP_NULL) { | |
3280af22 NIS |
991 | yylval.opval = PL_lex_op; |
992 | PL_lex_op = Nullop; | |
79072805 LW |
993 | return THING; |
994 | } | |
995 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 996 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
997 | |
998 | if (SvTYPE(sv) == SVt_PVIV) { | |
999 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
1000 | STRLEN len; | |
1001 | char *p; | |
1002 | SV *nsv; | |
1003 | ||
1004 | p = SvPV(sv, len); | |
79cb57f6 | 1005 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
1006 | if (SvUTF8(sv)) |
1007 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
1008 | SvREFCNT_dec(sv); |
1009 | sv = nsv; | |
4e553d73 | 1010 | } |
b3ac6de7 | 1011 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 1012 | PL_lex_stuff = Nullsv; |
79072805 LW |
1013 | return THING; |
1014 | } | |
1015 | ||
3280af22 NIS |
1016 | PL_sublex_info.super_state = PL_lex_state; |
1017 | PL_sublex_info.sub_inwhat = op_type; | |
1018 | PL_sublex_info.sub_op = PL_lex_op; | |
1019 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1020 | |
3280af22 NIS |
1021 | PL_expect = XTERM; |
1022 | if (PL_lex_op) { | |
1023 | yylval.opval = PL_lex_op; | |
1024 | PL_lex_op = Nullop; | |
55497cff | 1025 | return PMFUNC; |
1026 | } | |
1027 | else | |
1028 | return FUNC; | |
1029 | } | |
1030 | ||
ffb4593c NT |
1031 | /* |
1032 | * S_sublex_push | |
1033 | * Create a new scope to save the lexing state. The scope will be | |
1034 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1035 | * to the uc, lc, etc. found before. | |
1036 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1037 | */ | |
1038 | ||
76e3520e | 1039 | STATIC I32 |
cea2e8a9 | 1040 | S_sublex_push(pTHX) |
55497cff | 1041 | { |
f46d017c | 1042 | ENTER; |
55497cff | 1043 | |
3280af22 NIS |
1044 | PL_lex_state = PL_sublex_info.super_state; |
1045 | SAVEI32(PL_lex_dojoin); | |
1046 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1047 | SAVEI32(PL_lex_casemods); |
1048 | SAVEI32(PL_lex_starts); | |
1049 | SAVEI32(PL_lex_state); | |
7766f137 | 1050 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1051 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1052 | SAVECOPLINE(PL_curcop); |
3280af22 | 1053 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1054 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1055 | SAVEPPTR(PL_oldbufptr); |
1056 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1057 | SAVEPPTR(PL_last_lop); |
1058 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1059 | SAVEPPTR(PL_linestart); |
1060 | SAVESPTR(PL_linestr); | |
1061 | SAVEPPTR(PL_lex_brackstack); | |
1062 | SAVEPPTR(PL_lex_casestack); | |
1063 | ||
1064 | PL_linestr = PL_lex_stuff; | |
1065 | PL_lex_stuff = Nullsv; | |
1066 | ||
9cbb5ea2 GS |
1067 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1068 | = SvPVX(PL_linestr); | |
3280af22 | 1069 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1070 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1071 | SAVEFREESV(PL_linestr); |
1072 | ||
1073 | PL_lex_dojoin = FALSE; | |
1074 | PL_lex_brackets = 0; | |
3280af22 NIS |
1075 | New(899, PL_lex_brackstack, 120, char); |
1076 | New(899, PL_lex_casestack, 12, char); | |
1077 | SAVEFREEPV(PL_lex_brackstack); | |
1078 | SAVEFREEPV(PL_lex_casestack); | |
1079 | PL_lex_casemods = 0; | |
1080 | *PL_lex_casestack = '\0'; | |
1081 | PL_lex_starts = 0; | |
1082 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1083 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1084 | |
1085 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1086 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1087 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1088 | else |
3280af22 | 1089 | PL_lex_inpat = Nullop; |
79072805 | 1090 | |
55497cff | 1091 | return '('; |
79072805 LW |
1092 | } |
1093 | ||
ffb4593c NT |
1094 | /* |
1095 | * S_sublex_done | |
1096 | * Restores lexer state after a S_sublex_push. | |
1097 | */ | |
1098 | ||
76e3520e | 1099 | STATIC I32 |
cea2e8a9 | 1100 | S_sublex_done(pTHX) |
79072805 | 1101 | { |
3280af22 | 1102 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1103 | SV *sv = newSVpvn("",0); |
1104 | if (SvUTF8(PL_linestr)) | |
1105 | SvUTF8_on(sv); | |
3280af22 | 1106 | PL_expect = XOPERATOR; |
9aa983d2 | 1107 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1108 | return THING; |
1109 | } | |
1110 | ||
3280af22 NIS |
1111 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1112 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1113 | return yylex(); |
79072805 LW |
1114 | } |
1115 | ||
ffb4593c | 1116 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1117 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1118 | PL_linestr = PL_lex_repl; | |
1119 | PL_lex_inpat = 0; | |
1120 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1121 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1122 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1123 | SAVEFREESV(PL_linestr); |
1124 | PL_lex_dojoin = FALSE; | |
1125 | PL_lex_brackets = 0; | |
3280af22 NIS |
1126 | PL_lex_casemods = 0; |
1127 | *PL_lex_casestack = '\0'; | |
1128 | PL_lex_starts = 0; | |
25da4f38 | 1129 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1130 | PL_lex_state = LEX_INTERPNORMAL; |
1131 | PL_lex_starts++; | |
e9fa98b2 HS |
1132 | /* we don't clear PL_lex_repl here, so that we can check later |
1133 | whether this is an evalled subst; that means we rely on the | |
1134 | logic to ensure sublex_done() is called again only via the | |
1135 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1136 | } |
e9fa98b2 | 1137 | else { |
3280af22 | 1138 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1139 | PL_lex_repl = Nullsv; |
1140 | } | |
79072805 | 1141 | return ','; |
ffed7fef LW |
1142 | } |
1143 | else { | |
f46d017c | 1144 | LEAVE; |
3280af22 NIS |
1145 | PL_bufend = SvPVX(PL_linestr); |
1146 | PL_bufend += SvCUR(PL_linestr); | |
1147 | PL_expect = XOPERATOR; | |
09bef843 | 1148 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1149 | return ')'; |
ffed7fef LW |
1150 | } |
1151 | } | |
1152 | ||
02aa26ce NT |
1153 | /* |
1154 | scan_const | |
1155 | ||
1156 | Extracts a pattern, double-quoted string, or transliteration. This | |
1157 | is terrifying code. | |
1158 | ||
3280af22 NIS |
1159 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1160 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1161 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1162 | ||
9b599b2a GS |
1163 | Returns a pointer to the character scanned up to. Iff this is |
1164 | advanced from the start pointer supplied (ie if anything was | |
1165 | successfully parsed), will leave an OP for the substring scanned | |
1166 | in yylval. Caller must intuit reason for not parsing further | |
1167 | by looking at the next characters herself. | |
1168 | ||
02aa26ce NT |
1169 | In patterns: |
1170 | backslashes: | |
1171 | double-quoted style: \r and \n | |
1172 | regexp special ones: \D \s | |
1173 | constants: \x3 | |
1174 | backrefs: \1 (deprecated in substitution replacements) | |
1175 | case and quoting: \U \Q \E | |
1176 | stops on @ and $, but not for $ as tail anchor | |
1177 | ||
1178 | In transliterations: | |
1179 | characters are VERY literal, except for - not at the start or end | |
1180 | of the string, which indicates a range. scan_const expands the | |
1181 | range to the full set of intermediate characters. | |
1182 | ||
1183 | In double-quoted strings: | |
1184 | backslashes: | |
1185 | double-quoted style: \r and \n | |
1186 | constants: \x3 | |
1187 | backrefs: \1 (deprecated) | |
1188 | case and quoting: \U \Q \E | |
1189 | stops on @ and $ | |
1190 | ||
1191 | scan_const does *not* construct ops to handle interpolated strings. | |
1192 | It stops processing as soon as it finds an embedded $ or @ variable | |
1193 | and leaves it to the caller to work out what's going on. | |
1194 | ||
1195 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1196 | ||
1197 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1198 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1199 | followed by one of ")| \n\t" | |
1200 | ||
1201 | \1 (backreferences) are turned into $1 | |
1202 | ||
1203 | The structure of the code is | |
1204 | while (there's a character to process) { | |
1205 | handle transliteration ranges | |
1206 | skip regexp comments | |
1207 | skip # initiated comments in //x patterns | |
1208 | check for embedded @foo | |
1209 | check for embedded scalars | |
1210 | if (backslash) { | |
1211 | leave intact backslashes from leave (below) | |
1212 | deprecate \1 in strings and sub replacements | |
1213 | handle string-changing backslashes \l \U \Q \E, etc. | |
1214 | switch (what was escaped) { | |
1215 | handle - in a transliteration (becomes a literal -) | |
1216 | handle \132 octal characters | |
1217 | handle 0x15 hex characters | |
1218 | handle \cV (control V) | |
1219 | handle printf backslashes (\f, \r, \n, etc) | |
1220 | } (end switch) | |
1221 | } (end if backslash) | |
1222 | } (end while character to read) | |
4e553d73 | 1223 | |
02aa26ce NT |
1224 | */ |
1225 | ||
76e3520e | 1226 | STATIC char * |
cea2e8a9 | 1227 | S_scan_const(pTHX_ char *start) |
79072805 | 1228 | { |
3280af22 | 1229 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1230 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1231 | register char *s = start; /* start of the constant */ | |
1232 | register char *d = SvPVX(sv); /* destination for copies */ | |
1233 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1234 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1235 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1236 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1237 | UV uv; |
1238 | ||
dff6d3cd | 1239 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1240 | PL_lex_inpat |
4a2d328f | 1241 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1242 | : ""; |
79072805 | 1243 | |
2b9d42f0 NIS |
1244 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1245 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1246 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1247 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1248 | } | |
1249 | ||
1250 | ||
79072805 | 1251 | while (s < send || dorange) { |
02aa26ce | 1252 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1253 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1254 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1255 | if (dorange) { |
1ba5c669 JH |
1256 | I32 i; /* current expanded character */ |
1257 | I32 min; /* first character in range */ | |
1258 | I32 max; /* last character in range */ | |
02aa26ce | 1259 | |
2b9d42f0 | 1260 | if (has_utf8) { |
8973db79 JH |
1261 | char *c = (char*)utf8_hop((U8*)d, -1); |
1262 | char *e = d++; | |
1263 | while (e-- > c) | |
1264 | *(e + 1) = *e; | |
25716404 | 1265 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1266 | /* mark the range as done, and continue */ |
1267 | dorange = FALSE; | |
1268 | didrange = TRUE; | |
1269 | continue; | |
1270 | } | |
2b9d42f0 | 1271 | |
02aa26ce | 1272 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1273 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1274 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1275 | d -= 2; /* eat the first char and the - */ |
1276 | ||
8ada0baa JH |
1277 | min = (U8)*d; /* first char in range */ |
1278 | max = (U8)d[1]; /* last char in range */ | |
1279 | ||
c2e66d9e | 1280 | if (min > max) { |
01ec43d0 | 1281 | Perl_croak(aTHX_ |
1ba5c669 JH |
1282 | "Invalid [] range \"%c-%c\" in transliteration operator", |
1283 | (char)min, (char)max); | |
c2e66d9e GS |
1284 | } |
1285 | ||
c7f1f016 | 1286 | #ifdef EBCDIC |
8ada0baa JH |
1287 | if ((isLOWER(min) && isLOWER(max)) || |
1288 | (isUPPER(min) && isUPPER(max))) { | |
1289 | if (isLOWER(min)) { | |
1290 | for (i = min; i <= max; i++) | |
1291 | if (isLOWER(i)) | |
db42d148 | 1292 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1293 | } else { |
1294 | for (i = min; i <= max; i++) | |
1295 | if (isUPPER(i)) | |
db42d148 | 1296 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1297 | } |
1298 | } | |
1299 | else | |
1300 | #endif | |
1301 | for (i = min; i <= max; i++) | |
1302 | *d++ = i; | |
02aa26ce NT |
1303 | |
1304 | /* mark the range as done, and continue */ | |
79072805 | 1305 | dorange = FALSE; |
01ec43d0 | 1306 | didrange = TRUE; |
79072805 | 1307 | continue; |
4e553d73 | 1308 | } |
02aa26ce NT |
1309 | |
1310 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1311 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1312 | if (didrange) { |
1fafa243 | 1313 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1314 | } |
2b9d42f0 | 1315 | if (has_utf8) { |
25716404 | 1316 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1317 | s++; |
1318 | continue; | |
1319 | } | |
79072805 LW |
1320 | dorange = TRUE; |
1321 | s++; | |
01ec43d0 GS |
1322 | } |
1323 | else { | |
1324 | didrange = FALSE; | |
1325 | } | |
79072805 | 1326 | } |
02aa26ce NT |
1327 | |
1328 | /* if we get here, we're not doing a transliteration */ | |
1329 | ||
0f5d15d6 IZ |
1330 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1331 | except for the last char, which will be done separately. */ | |
3280af22 | 1332 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1333 | if (s[2] == '#') { |
1334 | while (s < send && *s != ')') | |
db42d148 | 1335 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1336 | } |
1337 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1338 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1339 | { | |
cc6b7395 | 1340 | I32 count = 1; |
0f5d15d6 | 1341 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1342 | char c; |
1343 | ||
d9f97599 GS |
1344 | while (count && (c = *regparse)) { |
1345 | if (c == '\\' && regparse[1]) | |
1346 | regparse++; | |
4e553d73 | 1347 | else if (c == '{') |
cc6b7395 | 1348 | count++; |
4e553d73 | 1349 | else if (c == '}') |
cc6b7395 | 1350 | count--; |
d9f97599 | 1351 | regparse++; |
cc6b7395 | 1352 | } |
5bdf89e7 IZ |
1353 | if (*regparse != ')') { |
1354 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1355 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1356 | } |
0f5d15d6 | 1357 | while (s < regparse) |
db42d148 | 1358 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1359 | } |
748a9306 | 1360 | } |
02aa26ce NT |
1361 | |
1362 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1363 | else if (*s == '#' && PL_lex_inpat && |
1364 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1365 | while (s+1 < send && *s != '\n') |
db42d148 | 1366 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1367 | } |
02aa26ce | 1368 | |
5d1d4326 JH |
1369 | /* check for embedded arrays |
1370 | (@foo, @:foo, @'foo, @{foo}, @$foo, @+, @-) | |
1371 | */ | |
7e2040f0 | 1372 | else if (*s == '@' && s[1] |
5d1d4326 | 1373 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1374 | break; |
02aa26ce NT |
1375 | |
1376 | /* check for embedded scalars. only stop if we're sure it's a | |
1377 | variable. | |
1378 | */ | |
79072805 | 1379 | else if (*s == '$') { |
3280af22 | 1380 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1381 | break; |
6002328a | 1382 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1383 | break; /* in regexp, $ might be tail anchor */ |
1384 | } | |
02aa26ce | 1385 | |
2b9d42f0 NIS |
1386 | /* End of else if chain - OP_TRANS rejoin rest */ |
1387 | ||
02aa26ce | 1388 | /* backslashes */ |
79072805 LW |
1389 | if (*s == '\\' && s+1 < send) { |
1390 | s++; | |
02aa26ce NT |
1391 | |
1392 | /* some backslashes we leave behind */ | |
c9f97d15 | 1393 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1394 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1395 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1396 | continue; |
1397 | } | |
02aa26ce NT |
1398 | |
1399 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1400 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1401 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1402 | { |
599cee73 | 1403 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1404 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1405 | *--s = '$'; |
1406 | break; | |
1407 | } | |
02aa26ce NT |
1408 | |
1409 | /* string-change backslash escapes */ | |
3280af22 | 1410 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1411 | --s; |
1412 | break; | |
1413 | } | |
02aa26ce NT |
1414 | |
1415 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1416 | switch (*s) { |
02aa26ce NT |
1417 | |
1418 | /* quoted - in transliterations */ | |
79072805 | 1419 | case '-': |
3280af22 | 1420 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1421 | *d++ = *s++; |
1422 | continue; | |
1423 | } | |
1424 | /* FALL THROUGH */ | |
1425 | default: | |
11b8faa4 | 1426 | { |
707afd92 MS |
1427 | if (ckWARN(WARN_MISC) && |
1428 | isALNUM(*s) && | |
1429 | *s != '_') | |
4e553d73 | 1430 | Perl_warner(aTHX_ WARN_MISC, |
11b8faa4 JH |
1431 | "Unrecognized escape \\%c passed through", |
1432 | *s); | |
1433 | /* default action is to copy the quoted character */ | |
f9a63242 | 1434 | goto default_action; |
11b8faa4 | 1435 | } |
02aa26ce NT |
1436 | |
1437 | /* \132 indicates an octal constant */ | |
79072805 LW |
1438 | case '0': case '1': case '2': case '3': |
1439 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1440 | { |
53305cf1 NC |
1441 | I32 flags = 0; |
1442 | STRLEN len = 3; | |
1443 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1444 | s += len; |
1445 | } | |
012bcf8d | 1446 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1447 | |
1448 | /* \x24 indicates a hex constant */ | |
79072805 | 1449 | case 'x': |
a0ed51b3 LW |
1450 | ++s; |
1451 | if (*s == '{') { | |
1452 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1453 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1454 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1455 | STRLEN len; |
355860ce | 1456 | |
53305cf1 | 1457 | ++s; |
adaeee49 | 1458 | if (!e) { |
a0ed51b3 | 1459 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1460 | continue; |
ba210ebe | 1461 | } |
53305cf1 NC |
1462 | len = e - s; |
1463 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1464 | s = e + 1; |
a0ed51b3 LW |
1465 | } |
1466 | else { | |
ba210ebe | 1467 | { |
53305cf1 | 1468 | STRLEN len = 2; |
a4c04bdc | 1469 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1470 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1471 | s += len; |
1472 | } | |
012bcf8d GS |
1473 | } |
1474 | ||
1475 | NUM_ESCAPE_INSERT: | |
1476 | /* Insert oct or hex escaped character. | |
301d3d20 | 1477 | * There will always enough room in sv since such |
db42d148 | 1478 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1479 | * they can end up as. */ |
ba7cea30 | 1480 | |
c7f1f016 NIS |
1481 | /* We need to map to chars to ASCII before doing the tests |
1482 | to cover EBCDIC | |
1483 | */ | |
c4d5f83a | 1484 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1485 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1486 | /* Might need to recode whatever we have |
1487 | * accumulated so far if it contains any | |
1488 | * hibit chars. | |
1489 | * | |
1490 | * (Can't we keep track of that and avoid | |
1491 | * this rescan? --jhi) | |
012bcf8d | 1492 | */ |
c7f1f016 | 1493 | int hicount = 0; |
63cd0674 NIS |
1494 | U8 *c; |
1495 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1496 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1497 | hicount++; |
db42d148 | 1498 | } |
012bcf8d | 1499 | } |
63cd0674 | 1500 | if (hicount) { |
db42d148 NIS |
1501 | STRLEN offset = d - SvPVX(sv); |
1502 | U8 *src, *dst; | |
1503 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1504 | src = (U8 *)d - 1; | |
1505 | dst = src+hicount; | |
1506 | d += hicount; | |
1507 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1508 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1509 | U8 ch = NATIVE_TO_ASCII(*src); |
db42d148 NIS |
1510 | *dst-- = UTF8_EIGHT_BIT_LO(ch); |
1511 | *dst-- = UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1512 | } |
1513 | else { | |
63cd0674 | 1514 | *dst-- = *src; |
012bcf8d | 1515 | } |
c7f1f016 | 1516 | src--; |
012bcf8d GS |
1517 | } |
1518 | } | |
1519 | } | |
1520 | ||
9aa983d2 | 1521 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1522 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1523 | has_utf8 = TRUE; |
f9a63242 JH |
1524 | if (PL_lex_inwhat == OP_TRANS && |
1525 | PL_sublex_info.sub_op) { | |
1526 | PL_sublex_info.sub_op->op_private |= | |
1527 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1528 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1529 | } |
012bcf8d | 1530 | } |
a0ed51b3 | 1531 | else { |
012bcf8d | 1532 | *d++ = (char)uv; |
a0ed51b3 | 1533 | } |
012bcf8d GS |
1534 | } |
1535 | else { | |
c4d5f83a | 1536 | *d++ = (char) uv; |
a0ed51b3 | 1537 | } |
79072805 | 1538 | continue; |
02aa26ce | 1539 | |
b239daa5 | 1540 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1541 | case 'N': |
55eda711 | 1542 | ++s; |
423cee85 JH |
1543 | if (*s == '{') { |
1544 | char* e = strchr(s, '}'); | |
155aba94 | 1545 | SV *res; |
423cee85 JH |
1546 | STRLEN len; |
1547 | char *str; | |
4e553d73 | 1548 | |
423cee85 | 1549 | if (!e) { |
5777a3f7 | 1550 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1551 | e = s - 1; |
1552 | goto cont_scan; | |
1553 | } | |
55eda711 JH |
1554 | res = newSVpvn(s + 1, e - s - 1); |
1555 | res = new_constant( Nullch, 0, "charnames", | |
1556 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1557 | if (has_utf8) |
1558 | sv_utf8_upgrade(res); | |
423cee85 | 1559 | str = SvPV(res,len); |
cddc7ef4 JH |
1560 | #ifdef EBCDIC |
1561 | { | |
1562 | UV uv = utf8_to_uvchr((U8*)str, 0); | |
1563 | ||
1564 | if (uv < 0x100) { | |
1565 | U8 tmpbuf[UTF8_MAXLEN+1], *d; | |
1566 | ||
1567 | d = uvchr_to_utf8(tmpbuf, UNI_TO_NATIVE(uv)); | |
1568 | sv_setpvn(res, (char *)tmpbuf, d - tmpbuf); | |
1569 | str = SvPV(res, len); | |
1570 | } | |
1571 | } | |
1572 | #endif | |
89491803 | 1573 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1574 | char *ostart = SvPVX(sv); |
1575 | SvCUR_set(sv, d - ostart); | |
1576 | SvPOK_on(sv); | |
e4f3eed8 | 1577 | *d = '\0'; |
f08d6ad9 | 1578 | sv_utf8_upgrade(sv); |
d2f449dd SB |
1579 | /* this just broke our allocation above... */ |
1580 | SvGROW(sv, send - start); | |
f08d6ad9 | 1581 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1582 | has_utf8 = TRUE; |
f08d6ad9 | 1583 | } |
b239daa5 | 1584 | if (len > e - s + 4) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1585 | char *odest = SvPVX(sv); |
1586 | ||
8973db79 | 1587 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1588 | d = SvPVX(sv) + (d - odest); |
1589 | } | |
1590 | Copy(str, d, len, char); | |
1591 | d += len; | |
1592 | SvREFCNT_dec(res); | |
1593 | cont_scan: | |
1594 | s = e + 1; | |
1595 | } | |
1596 | else | |
5777a3f7 | 1597 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1598 | continue; |
1599 | ||
02aa26ce | 1600 | /* \c is a control character */ |
79072805 LW |
1601 | case 'c': |
1602 | s++; | |
ba210ebe JH |
1603 | { |
1604 | U8 c = *s++; | |
c7f1f016 NIS |
1605 | #ifdef EBCDIC |
1606 | if (isLOWER(c)) | |
1607 | c = toUPPER(c); | |
1608 | #endif | |
db42d148 | 1609 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1610 | } |
79072805 | 1611 | continue; |
02aa26ce NT |
1612 | |
1613 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1614 | case 'b': |
db42d148 | 1615 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1616 | break; |
1617 | case 'n': | |
db42d148 | 1618 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1619 | break; |
1620 | case 'r': | |
db42d148 | 1621 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1622 | break; |
1623 | case 'f': | |
db42d148 | 1624 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1625 | break; |
1626 | case 't': | |
db42d148 | 1627 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1628 | break; |
34a3fe2a | 1629 | case 'e': |
db42d148 | 1630 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1631 | break; |
1632 | case 'a': | |
db42d148 | 1633 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1634 | break; |
02aa26ce NT |
1635 | } /* end switch */ |
1636 | ||
79072805 LW |
1637 | s++; |
1638 | continue; | |
02aa26ce NT |
1639 | } /* end if (backslash) */ |
1640 | ||
f9a63242 | 1641 | default_action: |
2b9d42f0 NIS |
1642 | /* If we started with encoded form, or already know we want it |
1643 | and then encode the next character */ | |
1644 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1645 | STRLEN len = 1; | |
1646 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1647 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1648 | s += len; | |
1649 | if (need > len) { | |
1650 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1651 | STRLEN off = d - SvPVX(sv); | |
1652 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1653 | } | |
1654 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1655 | has_utf8 = TRUE; | |
1656 | } | |
1657 | else { | |
1658 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1659 | } | |
02aa26ce NT |
1660 | } /* while loop to process each character */ |
1661 | ||
1662 | /* terminate the string and set up the sv */ | |
79072805 | 1663 | *d = '\0'; |
463ee0b2 | 1664 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1665 | if (SvCUR(sv) >= SvLEN(sv)) |
585602fa | 1666 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1667 | |
79072805 | 1668 | SvPOK_on(sv); |
9f4817db | 1669 | if (PL_encoding && !has_utf8) { |
5d170f3a | 1670 | Perl_sv_recode_to_utf8(aTHX_ sv, PL_encoding); |
9f4817db JH |
1671 | has_utf8 = TRUE; |
1672 | } | |
2b9d42f0 | 1673 | if (has_utf8) { |
7e2040f0 | 1674 | SvUTF8_on(sv); |
2b9d42f0 NIS |
1675 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1676 | PL_sublex_info.sub_op->op_private |= | |
1677 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1678 | } | |
1679 | } | |
79072805 | 1680 | |
02aa26ce | 1681 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1682 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1683 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1684 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1685 | } |
02aa26ce | 1686 | |
9b599b2a | 1687 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1688 | if (s > PL_bufptr) { |
1689 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1690 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1691 | sv, Nullsv, |
4e553d73 | 1692 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1693 | ? "tr" |
3280af22 | 1694 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1695 | ? "s" |
1696 | : "qq"))); | |
79072805 | 1697 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1698 | } else |
8990e307 | 1699 | SvREFCNT_dec(sv); |
79072805 LW |
1700 | return s; |
1701 | } | |
1702 | ||
ffb4593c NT |
1703 | /* S_intuit_more |
1704 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1705 | * FALSE otherwise. | |
ffb4593c NT |
1706 | * |
1707 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1708 | * | |
1709 | * ->[ and ->{ return TRUE | |
1710 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1711 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1712 | * if we're in a pattern and the first char is a { | |
1713 | * {4,5} (any digits around the comma) returns FALSE | |
1714 | * if we're in a pattern and the first char is a [ | |
1715 | * [] returns FALSE | |
1716 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1717 | * character class or not. It has to deal with things like | |
1718 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1719 | * anything else returns TRUE | |
1720 | */ | |
1721 | ||
9cbb5ea2 GS |
1722 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1723 | ||
76e3520e | 1724 | STATIC int |
cea2e8a9 | 1725 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1726 | { |
3280af22 | 1727 | if (PL_lex_brackets) |
79072805 LW |
1728 | return TRUE; |
1729 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1730 | return TRUE; | |
1731 | if (*s != '{' && *s != '[') | |
1732 | return FALSE; | |
3280af22 | 1733 | if (!PL_lex_inpat) |
79072805 LW |
1734 | return TRUE; |
1735 | ||
1736 | /* In a pattern, so maybe we have {n,m}. */ | |
1737 | if (*s == '{') { | |
1738 | s++; | |
1739 | if (!isDIGIT(*s)) | |
1740 | return TRUE; | |
1741 | while (isDIGIT(*s)) | |
1742 | s++; | |
1743 | if (*s == ',') | |
1744 | s++; | |
1745 | while (isDIGIT(*s)) | |
1746 | s++; | |
1747 | if (*s == '}') | |
1748 | return FALSE; | |
1749 | return TRUE; | |
1750 | ||
1751 | } | |
1752 | ||
1753 | /* On the other hand, maybe we have a character class */ | |
1754 | ||
1755 | s++; | |
1756 | if (*s == ']' || *s == '^') | |
1757 | return FALSE; | |
1758 | else { | |
ffb4593c | 1759 | /* this is terrifying, and it works */ |
79072805 LW |
1760 | int weight = 2; /* let's weigh the evidence */ |
1761 | char seen[256]; | |
f27ffc4a | 1762 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1763 | char *send = strchr(s,']'); |
3280af22 | 1764 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1765 | |
1766 | if (!send) /* has to be an expression */ | |
1767 | return TRUE; | |
1768 | ||
1769 | Zero(seen,256,char); | |
1770 | if (*s == '$') | |
1771 | weight -= 3; | |
1772 | else if (isDIGIT(*s)) { | |
1773 | if (s[1] != ']') { | |
1774 | if (isDIGIT(s[1]) && s[2] == ']') | |
1775 | weight -= 10; | |
1776 | } | |
1777 | else | |
1778 | weight -= 100; | |
1779 | } | |
1780 | for (; s < send; s++) { | |
1781 | last_un_char = un_char; | |
1782 | un_char = (unsigned char)*s; | |
1783 | switch (*s) { | |
1784 | case '@': | |
1785 | case '&': | |
1786 | case '$': | |
1787 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1788 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1789 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1790 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1791 | weight -= 100; |
1792 | else | |
1793 | weight -= 10; | |
1794 | } | |
1795 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1796 | strchr("[#!%*<>()-=",s[1])) { |
1797 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1798 | weight -= 10; |
1799 | else | |
1800 | weight -= 1; | |
1801 | } | |
1802 | break; | |
1803 | case '\\': | |
1804 | un_char = 254; | |
1805 | if (s[1]) { | |
93a17b20 | 1806 | if (strchr("wds]",s[1])) |
79072805 LW |
1807 | weight += 100; |
1808 | else if (seen['\''] || seen['"']) | |
1809 | weight += 1; | |
93a17b20 | 1810 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1811 | weight += 40; |
1812 | else if (isDIGIT(s[1])) { | |
1813 | weight += 40; | |
1814 | while (s[1] && isDIGIT(s[1])) | |
1815 | s++; | |
1816 | } | |
1817 | } | |
1818 | else | |
1819 | weight += 100; | |
1820 | break; | |
1821 | case '-': | |
1822 | if (s[1] == '\\') | |
1823 | weight += 50; | |
93a17b20 | 1824 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1825 | weight += 30; |
93a17b20 | 1826 | if (strchr("zZ79~",s[1])) |
79072805 | 1827 | weight += 30; |
f27ffc4a GS |
1828 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1829 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1830 | break; |
1831 | default: | |
93a17b20 | 1832 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1833 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1834 | char *d = tmpbuf; | |
1835 | while (isALPHA(*s)) | |
1836 | *d++ = *s++; | |
1837 | *d = '\0'; | |
1838 | if (keyword(tmpbuf, d - tmpbuf)) | |
1839 | weight -= 150; | |
1840 | } | |
1841 | if (un_char == last_un_char + 1) | |
1842 | weight += 5; | |
1843 | weight -= seen[un_char]; | |
1844 | break; | |
1845 | } | |
1846 | seen[un_char]++; | |
1847 | } | |
1848 | if (weight >= 0) /* probably a character class */ | |
1849 | return FALSE; | |
1850 | } | |
1851 | ||
1852 | return TRUE; | |
1853 | } | |
ffed7fef | 1854 | |
ffb4593c NT |
1855 | /* |
1856 | * S_intuit_method | |
1857 | * | |
1858 | * Does all the checking to disambiguate | |
1859 | * foo bar | |
1860 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1861 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1862 | * | |
1863 | * First argument is the stuff after the first token, e.g. "bar". | |
1864 | * | |
1865 | * Not a method if bar is a filehandle. | |
1866 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1867 | * Not a method if it's really "Foo $bar" | |
1868 | * Method if it's "foo $bar" | |
1869 | * Not a method if it's really "print foo $bar" | |
1870 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1871 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1872 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1873 | * => |
1874 | */ | |
1875 | ||
76e3520e | 1876 | STATIC int |
cea2e8a9 | 1877 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1878 | { |
1879 | char *s = start + (*start == '$'); | |
3280af22 | 1880 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1881 | STRLEN len; |
1882 | GV* indirgv; | |
1883 | ||
1884 | if (gv) { | |
b6c543e3 | 1885 | CV *cv; |
a0d0e21e LW |
1886 | if (GvIO(gv)) |
1887 | return 0; | |
b6c543e3 IZ |
1888 | if ((cv = GvCVu(gv))) { |
1889 | char *proto = SvPVX(cv); | |
1890 | if (proto) { | |
1891 | if (*proto == ';') | |
1892 | proto++; | |
1893 | if (*proto == '*') | |
1894 | return 0; | |
1895 | } | |
1896 | } else | |
a0d0e21e LW |
1897 | gv = 0; |
1898 | } | |
8903cb82 | 1899 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1900 | /* start is the beginning of the possible filehandle/object, |
1901 | * and s is the end of it | |
1902 | * tmpbuf is a copy of it | |
1903 | */ | |
1904 | ||
a0d0e21e | 1905 | if (*start == '$') { |
3280af22 | 1906 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1907 | return 0; |
1908 | s = skipspace(s); | |
3280af22 NIS |
1909 | PL_bufptr = start; |
1910 | PL_expect = XREF; | |
a0d0e21e LW |
1911 | return *s == '(' ? FUNCMETH : METHOD; |
1912 | } | |
1913 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1914 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1915 | len -= 2; | |
1916 | tmpbuf[len] = '\0'; | |
1917 | goto bare_package; | |
1918 | } | |
1919 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1920 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1921 | return 0; |
1922 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1923 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1924 | s = skipspace(s); |
3280af22 | 1925 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1926 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1927 | bare_package: |
3280af22 | 1928 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1929 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1930 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1931 | PL_expect = XTERM; | |
a0d0e21e | 1932 | force_next(WORD); |
3280af22 | 1933 | PL_bufptr = s; |
a0d0e21e LW |
1934 | return *s == '(' ? FUNCMETH : METHOD; |
1935 | } | |
1936 | } | |
1937 | return 0; | |
1938 | } | |
1939 | ||
ffb4593c NT |
1940 | /* |
1941 | * S_incl_perldb | |
1942 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1943 | * is set, it will return the contents of that, otherwise a | |
1944 | * compile-time require of perl5db.pl. | |
1945 | */ | |
1946 | ||
76e3520e | 1947 | STATIC char* |
cea2e8a9 | 1948 | S_incl_perldb(pTHX) |
a0d0e21e | 1949 | { |
3280af22 | 1950 | if (PL_perldb) { |
76e3520e | 1951 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1952 | |
1953 | if (pdb) | |
1954 | return pdb; | |
91487cfc | 1955 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1956 | return "BEGIN { require 'perl5db.pl' }"; |
1957 | } | |
1958 | return ""; | |
1959 | } | |
1960 | ||
1961 | ||
16d20bd9 | 1962 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 1963 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
1964 | * Note that the filter function only applies to the current source file |
1965 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1966 | * | |
1967 | * The datasv parameter (which may be NULL) can be used to pass | |
1968 | * private data to this instance of the filter. The filter function | |
1969 | * can recover the SV using the FILTER_DATA macro and use it to | |
1970 | * store private buffers and state information. | |
1971 | * | |
1972 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 1973 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 1974 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
1975 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1976 | * private use must be set using malloc'd pointers. | |
1977 | */ | |
16d20bd9 AD |
1978 | |
1979 | SV * | |
864dbfa3 | 1980 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1981 | { |
f4c556ac GS |
1982 | if (!funcp) |
1983 | return Nullsv; | |
1984 | ||
3280af22 NIS |
1985 | if (!PL_rsfp_filters) |
1986 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1987 | if (!datasv) |
8c52afec | 1988 | datasv = NEWSV(255,0); |
16d20bd9 | 1989 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1990 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 1991 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 1992 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 1993 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 1994 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
1995 | av_unshift(PL_rsfp_filters, 1); |
1996 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1997 | return(datasv); |
1998 | } | |
4e553d73 | 1999 | |
16d20bd9 AD |
2000 | |
2001 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2002 | void |
864dbfa3 | 2003 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2004 | { |
e0c19803 | 2005 | SV *datasv; |
fe5a182c | 2006 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2007 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2008 | return; |
2009 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2010 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2011 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2012 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2013 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2014 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2015 | |
16d20bd9 AD |
2016 | return; |
2017 | } | |
2018 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2019 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2020 | } |
2021 | ||
2022 | ||
2023 | /* Invoke the n'th filter function for the current rsfp. */ | |
2024 | I32 | |
864dbfa3 | 2025 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
4e553d73 NIS |
2026 | |
2027 | ||
8ac85365 | 2028 | /* 0 = read one text line */ |
a0d0e21e | 2029 | { |
16d20bd9 AD |
2030 | filter_t funcp; |
2031 | SV *datasv = NULL; | |
e50aee73 | 2032 | |
3280af22 | 2033 | if (!PL_rsfp_filters) |
16d20bd9 | 2034 | return -1; |
3280af22 | 2035 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
2036 | /* Provide a default input filter to make life easy. */ |
2037 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2038 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2039 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2040 | if (maxlen) { |
16d20bd9 AD |
2041 | /* Want a block */ |
2042 | int len ; | |
2043 | int old_len = SvCUR(buf_sv) ; | |
2044 | ||
2045 | /* ensure buf_sv is large enough */ | |
2046 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
2047 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2048 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2049 | return -1; /* error */ |
2050 | else | |
2051 | return 0 ; /* end of file */ | |
2052 | } | |
16d20bd9 AD |
2053 | SvCUR_set(buf_sv, old_len + len) ; |
2054 | } else { | |
2055 | /* Want a line */ | |
3280af22 NIS |
2056 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2057 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2058 | return -1; /* error */ |
2059 | else | |
2060 | return 0 ; /* end of file */ | |
2061 | } | |
16d20bd9 AD |
2062 | } |
2063 | return SvCUR(buf_sv); | |
2064 | } | |
2065 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 2066 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
2067 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2068 | "filter_read %d: skipped (filter deleted)\n", | |
2069 | idx)); | |
16d20bd9 AD |
2070 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2071 | } | |
2072 | /* Get function pointer hidden within datasv */ | |
4755096e | 2073 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2074 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2075 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2076 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2077 | /* Call function. The function is expected to */ |
2078 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2079 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2080 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2081 | } |
2082 | ||
76e3520e | 2083 | STATIC char * |
cea2e8a9 | 2084 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2085 | { |
c39cd008 | 2086 | #ifdef PERL_CR_FILTER |
3280af22 | 2087 | if (!PL_rsfp_filters) { |
c39cd008 | 2088 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2089 | } |
2090 | #endif | |
3280af22 | 2091 | if (PL_rsfp_filters) { |
16d20bd9 | 2092 | |
55497cff | 2093 | if (!append) |
2094 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2095 | if (FILTER_READ(0, sv, 0) > 0) |
2096 | return ( SvPVX(sv) ) ; | |
2097 | else | |
2098 | return Nullch ; | |
2099 | } | |
9d116dd7 | 2100 | else |
fd049845 | 2101 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2102 | } |
2103 | ||
01ec43d0 GS |
2104 | STATIC HV * |
2105 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2106 | { |
2107 | GV *gv; | |
2108 | ||
01ec43d0 | 2109 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2110 | return PL_curstash; |
2111 | ||
2112 | if (len > 2 && | |
2113 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2114 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2115 | { | |
2116 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2117 | } |
2118 | ||
2119 | /* use constant CLASS => 'MyClass' */ | |
2120 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2121 | SV *sv; | |
2122 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2123 | pkgname = SvPV_nolen(sv); | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | return gv_stashpv(pkgname, FALSE); | |
2128 | } | |
a0d0e21e | 2129 | |
748a9306 LW |
2130 | #ifdef DEBUGGING |
2131 | static char* exp_name[] = | |
09bef843 SB |
2132 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
2133 | "ATTRTERM", "TERMBLOCK" | |
2134 | }; | |
748a9306 | 2135 | #endif |
463ee0b2 | 2136 | |
02aa26ce NT |
2137 | /* |
2138 | yylex | |
2139 | ||
2140 | Works out what to call the token just pulled out of the input | |
2141 | stream. The yacc parser takes care of taking the ops we return and | |
2142 | stitching them into a tree. | |
2143 | ||
2144 | Returns: | |
2145 | PRIVATEREF | |
2146 | ||
2147 | Structure: | |
2148 | if read an identifier | |
2149 | if we're in a my declaration | |
2150 | croak if they tried to say my($foo::bar) | |
2151 | build the ops for a my() declaration | |
2152 | if it's an access to a my() variable | |
2153 | are we in a sort block? | |
2154 | croak if my($a); $a <=> $b | |
2155 | build ops for access to a my() variable | |
2156 | if in a dq string, and they've said @foo and we can't find @foo | |
2157 | croak | |
2158 | build ops for a bareword | |
2159 | if we already built the token before, use it. | |
2160 | */ | |
2161 | ||
dba4d153 | 2162 | #ifdef USE_PURE_BISON |
864dbfa3 | 2163 | int |
dba4d153 | 2164 | Perl_yylex_r(pTHX_ YYSTYPE *lvalp, int *lcharp) |
378cc40b | 2165 | { |
20141f0e IRC |
2166 | int r; |
2167 | ||
6f202aea | 2168 | yyactlevel++; |
20141f0e IRC |
2169 | yylval_pointer[yyactlevel] = lvalp; |
2170 | yychar_pointer[yyactlevel] = lcharp; | |
b73d6f50 IRC |
2171 | if (yyactlevel >= YYMAXLEVEL) |
2172 | Perl_croak(aTHX_ "panic: YYMAXLEVEL"); | |
20141f0e | 2173 | |
dba4d153 | 2174 | r = Perl_yylex(aTHX); |
20141f0e | 2175 | |
d8ae6756 IRC |
2176 | if (yyactlevel > 0) |
2177 | yyactlevel--; | |
20141f0e IRC |
2178 | |
2179 | return r; | |
2180 | } | |
dba4d153 | 2181 | #endif |
20141f0e | 2182 | |
dba4d153 JH |
2183 | #ifdef __SC__ |
2184 | #pragma segment Perl_yylex | |
2185 | #endif | |
dba4d153 | 2186 | int |
dba4d153 | 2187 | Perl_yylex(pTHX) |
20141f0e | 2188 | { |
79072805 | 2189 | register char *s; |
378cc40b | 2190 | register char *d; |
79072805 | 2191 | register I32 tmp; |
463ee0b2 | 2192 | STRLEN len; |
161b471a NIS |
2193 | GV *gv = Nullgv; |
2194 | GV **gvp = 0; | |
aa7440fb | 2195 | bool bof = FALSE; |
a687059c | 2196 | |
02aa26ce | 2197 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2198 | if (PL_pending_ident) |
e930465f | 2199 | return S_pending_ident(aTHX); |
bbce6d69 | 2200 | |
02aa26ce NT |
2201 | /* no identifier pending identification */ |
2202 | ||
3280af22 | 2203 | switch (PL_lex_state) { |
79072805 LW |
2204 | #ifdef COMMENTARY |
2205 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2206 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2207 | break; | |
2208 | #endif | |
2209 | ||
09bef843 | 2210 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2211 | case LEX_KNOWNEXT: |
3280af22 NIS |
2212 | PL_nexttoke--; |
2213 | yylval = PL_nextval[PL_nexttoke]; | |
2214 | if (!PL_nexttoke) { | |
2215 | PL_lex_state = PL_lex_defer; | |
2216 | PL_expect = PL_lex_expect; | |
2217 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2218 | } |
607df283 | 2219 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2220 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2221 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2222 | |
3280af22 | 2223 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2224 | |
02aa26ce | 2225 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2226 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2227 | */ |
79072805 LW |
2228 | case LEX_INTERPCASEMOD: |
2229 | #ifdef DEBUGGING | |
3280af22 | 2230 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2231 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2232 | #endif |
02aa26ce | 2233 | /* handle \E or end of string */ |
3280af22 | 2234 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2235 | char oldmod; |
02aa26ce NT |
2236 | |
2237 | /* if at a \E */ | |
3280af22 NIS |
2238 | if (PL_lex_casemods) { |
2239 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2240 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2241 | |
3280af22 NIS |
2242 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2243 | PL_bufptr += 2; | |
2244 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2245 | } |
79072805 LW |
2246 | return ')'; |
2247 | } | |
3280af22 NIS |
2248 | if (PL_bufptr != PL_bufend) |
2249 | PL_bufptr += 2; | |
2250 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2251 | return yylex(); |
79072805 LW |
2252 | } |
2253 | else { | |
607df283 | 2254 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2255 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2256 | s = PL_bufptr + 1; |
79072805 LW |
2257 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2258 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2259 | if (strchr("LU", *s) && |
3280af22 | 2260 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2261 | { |
3280af22 | 2262 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2263 | return ')'; |
2264 | } | |
3280af22 NIS |
2265 | if (PL_lex_casemods > 10) { |
2266 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2267 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2268 | SAVEFREEPV(newlb); |
3280af22 | 2269 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2270 | } |
2271 | } | |
3280af22 NIS |
2272 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2273 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2274 | PL_lex_state = LEX_INTERPCONCAT; | |
2275 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2276 | force_next('('); |
2277 | if (*s == 'l') | |
3280af22 | 2278 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2279 | else if (*s == 'u') |
3280af22 | 2280 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2281 | else if (*s == 'L') |
3280af22 | 2282 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2283 | else if (*s == 'U') |
3280af22 | 2284 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2285 | else if (*s == 'Q') |
3280af22 | 2286 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2287 | else |
cea2e8a9 | 2288 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2289 | PL_bufptr = s + 1; |
79072805 | 2290 | force_next(FUNC); |
3280af22 NIS |
2291 | if (PL_lex_starts) { |
2292 | s = PL_bufptr; | |
2293 | PL_lex_starts = 0; | |
79072805 LW |
2294 | Aop(OP_CONCAT); |
2295 | } | |
2296 | else | |
cea2e8a9 | 2297 | return yylex(); |
79072805 LW |
2298 | } |
2299 | ||
55497cff | 2300 | case LEX_INTERPPUSH: |
2301 | return sublex_push(); | |
2302 | ||
79072805 | 2303 | case LEX_INTERPSTART: |
3280af22 | 2304 | if (PL_bufptr == PL_bufend) |
79072805 | 2305 | return sublex_done(); |
607df283 | 2306 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2307 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2308 | PL_expect = XTERM; |
2309 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2310 | PL_lex_state = LEX_INTERPNORMAL; | |
2311 | if (PL_lex_dojoin) { | |
2312 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2313 | force_next(','); |
4d1ff10f | 2314 | #ifdef USE_5005THREADS |
533c011a NIS |
2315 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2316 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2317 | force_next(PRIVATEREF); |
2318 | #else | |
a0d0e21e | 2319 | force_ident("\"", '$'); |
4d1ff10f | 2320 | #endif /* USE_5005THREADS */ |
3280af22 | 2321 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2322 | force_next('$'); |
3280af22 | 2323 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2324 | force_next('('); |
3280af22 | 2325 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2326 | force_next(FUNC); |
2327 | } | |
3280af22 NIS |
2328 | if (PL_lex_starts++) { |
2329 | s = PL_bufptr; | |
79072805 LW |
2330 | Aop(OP_CONCAT); |
2331 | } | |
cea2e8a9 | 2332 | return yylex(); |
79072805 LW |
2333 | |
2334 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2335 | if (intuit_more(PL_bufptr)) { |
2336 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2337 | break; |
2338 | } | |
2339 | /* FALL THROUGH */ | |
2340 | ||
2341 | case LEX_INTERPEND: | |
3280af22 NIS |
2342 | if (PL_lex_dojoin) { |
2343 | PL_lex_dojoin = FALSE; | |
2344 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2345 | return ')'; |
2346 | } | |
43a16006 | 2347 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2348 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2349 | { |
e9fa98b2 | 2350 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2351 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2352 | PL_lex_repl = Nullsv; |
2353 | } | |
79072805 LW |
2354 | /* FALLTHROUGH */ |
2355 | case LEX_INTERPCONCAT: | |
2356 | #ifdef DEBUGGING | |
3280af22 | 2357 | if (PL_lex_brackets) |
cea2e8a9 | 2358 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2359 | #endif |
3280af22 | 2360 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2361 | return sublex_done(); |
2362 | ||
3280af22 NIS |
2363 | if (SvIVX(PL_linestr) == '\'') { |
2364 | SV *sv = newSVsv(PL_linestr); | |
2365 | if (!PL_lex_inpat) | |
76e3520e | 2366 | sv = tokeq(sv); |
3280af22 | 2367 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2368 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2369 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2370 | s = PL_bufend; |
79072805 LW |
2371 | } |
2372 | else { | |
3280af22 | 2373 | s = scan_const(PL_bufptr); |
79072805 | 2374 | if (*s == '\\') |
3280af22 | 2375 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2376 | else |
3280af22 | 2377 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2378 | } |
2379 | ||
3280af22 NIS |
2380 | if (s != PL_bufptr) { |
2381 | PL_nextval[PL_nexttoke] = yylval; | |
2382 | PL_expect = XTERM; | |
79072805 | 2383 | force_next(THING); |
3280af22 | 2384 | if (PL_lex_starts++) |
79072805 LW |
2385 | Aop(OP_CONCAT); |
2386 | else { | |
3280af22 | 2387 | PL_bufptr = s; |
cea2e8a9 | 2388 | return yylex(); |
79072805 LW |
2389 | } |
2390 | } | |
2391 | ||
cea2e8a9 | 2392 | return yylex(); |
a0d0e21e | 2393 | case LEX_FORMLINE: |
3280af22 NIS |
2394 | PL_lex_state = LEX_NORMAL; |
2395 | s = scan_formline(PL_bufptr); | |
2396 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2397 | goto rightbracket; |
2398 | OPERATOR(';'); | |
79072805 LW |
2399 | } |
2400 | ||
3280af22 NIS |
2401 | s = PL_bufptr; |
2402 | PL_oldoldbufptr = PL_oldbufptr; | |
2403 | PL_oldbufptr = s; | |
607df283 | 2404 | DEBUG_T( { |
bf49b057 GS |
2405 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2406 | exp_name[PL_expect], s); | |
5f80b19c | 2407 | } ); |
463ee0b2 LW |
2408 | |
2409 | retry: | |
378cc40b LW |
2410 | switch (*s) { |
2411 | default: | |
7e2040f0 | 2412 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2413 | goto keylookup; |
cea2e8a9 | 2414 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2415 | case 4: |
2416 | case 26: | |
2417 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2418 | case 0: |
3280af22 NIS |
2419 | if (!PL_rsfp) { |
2420 | PL_last_uni = 0; | |
2421 | PL_last_lop = 0; | |
2422 | if (PL_lex_brackets) | |
d98d5fff | 2423 | yyerror("Missing right curly or square bracket"); |
4e553d73 | 2424 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2425 | "### Tokener got EOF\n"); |
5f80b19c | 2426 | } ); |
79072805 | 2427 | TOKEN(0); |
463ee0b2 | 2428 | } |
3280af22 | 2429 | if (s++ < PL_bufend) |
a687059c | 2430 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2431 | PL_last_uni = 0; |
2432 | PL_last_lop = 0; | |
2433 | if (!PL_in_eval && !PL_preambled) { | |
2434 | PL_preambled = TRUE; | |
2435 | sv_setpv(PL_linestr,incl_perldb()); | |
2436 | if (SvCUR(PL_linestr)) | |
2437 | sv_catpv(PL_linestr,";"); | |
2438 | if (PL_preambleav){ | |
2439 | while(AvFILLp(PL_preambleav) >= 0) { | |
2440 | SV *tmpsv = av_shift(PL_preambleav); | |
2441 | sv_catsv(PL_linestr, tmpsv); | |
2442 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2443 | sv_free(tmpsv); |
2444 | } | |
3280af22 NIS |
2445 | sv_free((SV*)PL_preambleav); |
2446 | PL_preambleav = NULL; | |
91b7def8 | 2447 | } |
3280af22 NIS |
2448 | if (PL_minus_n || PL_minus_p) { |
2449 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2450 | if (PL_minus_l) | |
2451 | sv_catpv(PL_linestr,"chomp;"); | |
2452 | if (PL_minus_a) { | |
3280af22 NIS |
2453 | if (PL_minus_F) { |
2454 | if (strchr("/'\"", *PL_splitstr) | |
2455 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
3db68c4c | 2456 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2457 | else { |
2458 | char delim; | |
2459 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2460 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2461 | delim = *s; |
75c72d73 | 2462 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2463 | "q" + (delim == '\''), delim); |
3280af22 | 2464 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2465 | if (*s == '\\') |
3280af22 NIS |
2466 | sv_catpvn(PL_linestr, "\\", 1); |
2467 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2468 | } |
cea2e8a9 | 2469 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2470 | } |
2304df62 AD |
2471 | } |
2472 | else | |
75c72d73 | 2473 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2474 | } |
79072805 | 2475 | } |
3280af22 NIS |
2476 | sv_catpv(PL_linestr, "\n"); |
2477 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2478 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2479 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2480 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2481 | SV *sv = NEWSV(85,0); |
2482 | ||
2483 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2484 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2485 | (void)SvIOK_on(sv); |
2486 | SvIVX(sv) = 0; | |
57843af0 | 2487 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2488 | } |
79072805 | 2489 | goto retry; |
a687059c | 2490 | } |
e929a76b | 2491 | do { |
aa7440fb | 2492 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2493 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2494 | fake_eof: | |
2495 | if (PL_rsfp) { | |
2496 | if (PL_preprocess && !PL_in_eval) | |
2497 | (void)PerlProc_pclose(PL_rsfp); | |
2498 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2499 | PerlIO_clearerr(PL_rsfp); | |
2500 | else | |
2501 | (void)PerlIO_close(PL_rsfp); | |
2502 | PL_rsfp = Nullfp; | |
2503 | PL_doextract = FALSE; | |
2504 | } | |
2505 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2506 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2507 | sv_catpv(PL_linestr,";}"); | |
2508 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2509 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2510 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2511 | PL_minus_n = PL_minus_p = 0; |
2512 | goto retry; | |
2513 | } | |
2514 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2515 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2516 | sv_setpv(PL_linestr,""); |
2517 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2518 | } | |
2519 | /* if it looks like the start of a BOM, check if it in fact is */ | |
2520 | else if (bof && (!*s || *(U8*)s == 0xEF || *(U8*)s >= 0xFE)) { | |
226017aa | 2521 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2522 | # ifdef __GNU_LIBRARY__ |
2523 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2524 | # define FTELL_FOR_PIPE_IS_BROKEN |
2525 | # endif | |
e3f494f1 JH |
2526 | # else |
2527 | # ifdef __GLIBC__ | |
2528 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2529 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2530 | # endif | |
2531 | # endif | |
226017aa DD |
2532 | # endif |
2533 | #endif | |
2534 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2535 | /* This loses the possibility to detect the bof | |
2536 | * situation on perl -P when the libc5 is being used. | |
2537 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2538 | */ | |
2539 | if (!PL_preprocess) | |
7e28d3af | 2540 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2541 | #else |
7e28d3af | 2542 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2543 | #endif |
7e28d3af | 2544 | if (bof) { |
3280af22 | 2545 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2546 | s = swallow_bom((U8*)s); |
e929a76b | 2547 | } |
378cc40b | 2548 | } |
3280af22 | 2549 | if (PL_doextract) { |
a0d0e21e | 2550 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2551 | PL_doextract = FALSE; |
a0d0e21e LW |
2552 | |
2553 | /* Incest with pod. */ | |
2554 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2555 | sv_setpv(PL_linestr, ""); |
2556 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2557 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2558 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2559 | PL_doextract = FALSE; |
a0d0e21e | 2560 | } |
4e553d73 | 2561 | } |
463ee0b2 | 2562 | incline(s); |
3280af22 NIS |
2563 | } while (PL_doextract); |
2564 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2565 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2566 | SV *sv = NEWSV(85,0); |
a687059c | 2567 | |
93a17b20 | 2568 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2569 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2570 | (void)SvIOK_on(sv); |
2571 | SvIVX(sv) = 0; | |
57843af0 | 2572 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2573 | } |
3280af22 | 2574 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2575 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2576 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2577 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2578 | s++; |
a0d0e21e | 2579 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2580 | s++; |
44a8e56a | 2581 | d = Nullch; |
3280af22 | 2582 | if (!PL_in_eval) { |
44a8e56a | 2583 | if (*s == '#' && *(s+1) == '!') |
2584 | d = s + 2; | |
2585 | #ifdef ALTERNATE_SHEBANG | |
2586 | else { | |
2587 | static char as[] = ALTERNATE_SHEBANG; | |
2588 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2589 | d = s + (sizeof(as) - 1); | |
2590 | } | |
2591 | #endif /* ALTERNATE_SHEBANG */ | |
2592 | } | |
2593 | if (d) { | |
b8378b72 | 2594 | char *ipath; |
774d564b | 2595 | char *ipathend; |
b8378b72 | 2596 | |
774d564b | 2597 | while (isSPACE(*d)) |
b8378b72 CS |
2598 | d++; |
2599 | ipath = d; | |
774d564b | 2600 | while (*d && !isSPACE(*d)) |
2601 | d++; | |
2602 | ipathend = d; | |
2603 | ||
2604 | #ifdef ARG_ZERO_IS_SCRIPT | |
2605 | if (ipathend > ipath) { | |
2606 | /* | |
2607 | * HP-UX (at least) sets argv[0] to the script name, | |
2608 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2609 | * at least, set argv[0] to the basename of the Perl | |
2610 | * interpreter. So, having found "#!", we'll set it right. | |
2611 | */ | |
ee2f7564 | 2612 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2613 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2614 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2615 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2616 | SvSETMAGIC(x); |
2617 | } | |
774d564b | 2618 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2619 | } |
774d564b | 2620 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2621 | |
2622 | /* | |
2623 | * Look for options. | |
2624 | */ | |
748a9306 | 2625 | d = instr(s,"perl -"); |
84e30d1a | 2626 | if (!d) { |
748a9306 | 2627 | d = instr(s,"perl"); |
84e30d1a GS |
2628 | #if defined(DOSISH) |
2629 | /* avoid getting into infinite loops when shebang | |
2630 | * line contains "Perl" rather than "perl" */ | |
2631 | if (!d) { | |
2632 | for (d = ipathend-4; d >= ipath; --d) { | |
2633 | if ((*d == 'p' || *d == 'P') | |
2634 | && !ibcmp(d, "perl", 4)) | |
2635 | { | |
2636 | break; | |
2637 | } | |
2638 | } | |
2639 | if (d < ipath) | |
2640 | d = Nullch; | |
2641 | } | |
2642 | #endif | |
2643 | } | |
44a8e56a | 2644 | #ifdef ALTERNATE_SHEBANG |
2645 | /* | |
2646 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2647 | * character that can be part of a Perl expression, then if | |
2648 | * we see it but not "perl", we're probably looking at the | |
2649 | * start of Perl code, not a request to hand off to some | |
2650 | * other interpreter. Similarly, if "perl" is there, but | |
2651 | * not in the first 'word' of the line, we assume the line | |
2652 | * contains the start of the Perl program. | |
44a8e56a | 2653 | */ |
2654 | if (d && *s != '#') { | |
774d564b | 2655 | char *c = ipath; |
44a8e56a | 2656 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2657 | c++; | |
2658 | if (c < d) | |
2659 | d = Nullch; /* "perl" not in first word; ignore */ | |
2660 | else | |
2661 | *s = '#'; /* Don't try to parse shebang line */ | |
2662 | } | |
774d564b | 2663 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2664 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2665 | if (!d && |
44a8e56a | 2666 | *s == '#' && |
774d564b | 2667 | ipathend > ipath && |
3280af22 | 2668 | !PL_minus_c && |
748a9306 | 2669 | !instr(s,"indir") && |
3280af22 | 2670 | instr(PL_origargv[0],"perl")) |
748a9306 | 2671 | { |
9f68db38 | 2672 | char **newargv; |
9f68db38 | 2673 | |
774d564b | 2674 | *ipathend = '\0'; |
2675 | s = ipathend + 1; | |
3280af22 | 2676 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2677 | s++; |
3280af22 NIS |
2678 | if (s < PL_bufend) { |
2679 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2680 | newargv[1] = s; |
3280af22 | 2681 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2682 | s++; |
2683 | *s = '\0'; | |
3280af22 | 2684 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2685 | } |
2686 | else | |
3280af22 | 2687 | newargv = PL_origargv; |
774d564b | 2688 | newargv[0] = ipath; |
b4748376 | 2689 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
cea2e8a9 | 2690 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2691 | } |
bf4acbe4 | 2692 | #endif |
748a9306 | 2693 | if (d) { |
3280af22 NIS |
2694 | U32 oldpdb = PL_perldb; |
2695 | bool oldn = PL_minus_n; | |
2696 | bool oldp = PL_minus_p; | |
748a9306 LW |
2697 | |
2698 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2699 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2700 | |
2701 | if (*d++ == '-') { | |
a11ec5a9 | 2702 | bool switches_done = PL_doswitches; |
8cc95fdb | 2703 | do { |
2704 | if (*d == 'M' || *d == 'm') { | |
2705 | char *m = d; | |
2706 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2707 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2708 | (int)(d - m), m); |
2709 | } | |
2710 | d = moreswitches(d); | |
2711 | } while (d); | |
155aba94 GS |
2712 | if ((PERLDB_LINE && !oldpdb) || |
2713 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2714 | /* if we have already added "LINE: while (<>) {", |
2715 | we must not do it again */ | |
748a9306 | 2716 | { |
3280af22 NIS |
2717 | sv_setpv(PL_linestr, ""); |
2718 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2719 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2720 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2721 | PL_preambled = FALSE; |
84902520 | 2722 | if (PERLDB_LINE) |
3280af22 | 2723 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2724 | goto retry; |
2725 | } | |
a11ec5a9 RGS |
2726 | if (PL_doswitches && !switches_done) { |
2727 | int argc = PL_origargc; | |
2728 | char **argv = PL_origargv; | |
2729 | do { | |
2730 | argc--,argv++; | |
2731 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2732 | init_argv_symbols(argc,argv); | |
2733 | } | |
a0d0e21e | 2734 | } |
79072805 | 2735 | } |
9f68db38 | 2736 | } |
79072805 | 2737 | } |
3280af22 NIS |
2738 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2739 | PL_bufptr = s; | |
2740 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2741 | return yylex(); |
ae986130 | 2742 | } |
378cc40b | 2743 | goto retry; |
4fdae800 | 2744 | case '\r': |
6a27c188 | 2745 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2746 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2747 | Perl_croak(aTHX_ |
cc507455 | 2748 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2749 | #endif |
4fdae800 | 2750 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2751 | #ifdef MACOS_TRADITIONAL |
2752 | case '\312': | |
2753 | #endif | |
378cc40b LW |
2754 | s++; |
2755 | goto retry; | |
378cc40b | 2756 | case '#': |
e929a76b | 2757 | case '\n': |
3280af22 | 2758 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2759 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2760 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2761 | CopLINE_dec(PL_curcop); | |
2762 | incline(s); | |
2763 | } | |
3280af22 | 2764 | d = PL_bufend; |
a687059c | 2765 | while (s < d && *s != '\n') |
378cc40b | 2766 | s++; |
0f85fab0 | 2767 | if (s < d) |
378cc40b | 2768 | s++; |
78c267c1 | 2769 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2770 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2771 | incline(s); |
3280af22 NIS |
2772 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2773 | PL_bufptr = s; | |
2774 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2775 | return yylex(); |
a687059c | 2776 | } |
378cc40b | 2777 | } |
a687059c | 2778 | else { |
378cc40b | 2779 | *s = '\0'; |
3280af22 | 2780 | PL_bufend = s; |
a687059c | 2781 | } |
378cc40b LW |
2782 | goto retry; |
2783 | case '-': | |
79072805 | 2784 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2785 | I32 ftst = 0; |
2786 | ||
378cc40b | 2787 | s++; |
3280af22 | 2788 | PL_bufptr = s; |
748a9306 LW |
2789 | tmp = *s++; |
2790 | ||
bf4acbe4 | 2791 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2792 | s++; |
2793 | ||
2794 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2795 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2796 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2797 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2798 | } ); |
748a9306 LW |
2799 | OPERATOR('-'); /* unary minus */ |
2800 | } | |
3280af22 | 2801 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2802 | switch (tmp) { |
e5edeb50 JH |
2803 | case 'r': ftst = OP_FTEREAD; break; |
2804 | case 'w': ftst = OP_FTEWRITE; break; | |
2805 | case 'x': ftst = OP_FTEEXEC; break; | |
2806 | case 'o': ftst = OP_FTEOWNED; break; | |
2807 | case 'R': ftst = OP_FTRREAD; break; | |
2808 | case 'W': ftst = OP_FTRWRITE; break; | |
2809 | case 'X': ftst = OP_FTREXEC; break; | |
2810 | case 'O': ftst = OP_FTROWNED; break; | |
2811 | case 'e': ftst = OP_FTIS; break; | |
2812 | case 'z': ftst = OP_FTZERO; break; | |
2813 | case 's': ftst = OP_FTSIZE; break; | |
2814 | case 'f': ftst = OP_FTFILE; break; | |
2815 | case 'd': ftst = OP_FTDIR; break; | |
2816 | case 'l': ftst = OP_FTLINK; break; | |
2817 | case 'p': ftst = OP_FTPIPE; break; | |
2818 | case 'S': ftst = OP_FTSOCK; break; | |
2819 | case 'u': ftst = OP_FTSUID; break; | |
2820 | case 'g': ftst = OP_FTSGID; break; | |
2821 | case 'k': ftst = OP_FTSVTX; break; | |
2822 | case 'b': ftst = OP_FTBLK; break; | |
2823 | case 'c': ftst = OP_FTCHR; break; | |
2824 | case 't': ftst = OP_FTTTY; break; | |
2825 | case 'T': ftst = OP_FTTEXT; break; | |
2826 | case 'B': ftst = OP_FTBINARY; break; | |
2827 | case 'M': case 'A': case 'C': | |
2828 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2829 | switch (tmp) { | |
2830 | case 'M': ftst = OP_FTMTIME; break; | |
2831 | case 'A': ftst = OP_FTATIME; break; | |
2832 | case 'C': ftst = OP_FTCTIME; break; | |
2833 | default: break; | |
2834 | } | |
2835 | break; | |
378cc40b | 2836 | default: |
378cc40b LW |
2837 | break; |
2838 | } | |
e5edeb50 JH |
2839 | if (ftst) { |
2840 | PL_last_lop_op = ftst; | |
4e553d73 | 2841 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 2842 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 2843 | } ); |
e5edeb50 JH |
2844 | FTST(ftst); |
2845 | } | |
2846 | else { | |
2847 | /* Assume it was a minus followed by a one-letter named | |
2848 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 2849 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 RB |
2850 | "### %c looked like a file test but was not\n", |
2851 | (int)ftst); | |
5f80b19c | 2852 | } ); |
e5edeb50 JH |
2853 | s -= 2; |
2854 | } | |
378cc40b | 2855 | } |
a687059c LW |
2856 | tmp = *s++; |
2857 | if (*s == tmp) { | |
2858 | s++; | |
3280af22 | 2859 | if (PL_expect == XOPERATOR) |
79072805 LW |
2860 | TERM(POSTDEC); |
2861 | else | |
2862 | OPERATOR(PREDEC); | |
2863 | } | |
2864 | else if (*s == '>') { | |
2865 | s++; | |
2866 | s = skipspace(s); | |
7e2040f0 | 2867 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2868 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2869 | TOKEN(ARROW); |
79072805 | 2870 | } |
748a9306 LW |
2871 | else if (*s == '$') |
2872 | OPERATOR(ARROW); | |
463ee0b2 | 2873 | else |
748a9306 | 2874 | TERM(ARROW); |
a687059c | 2875 | } |
3280af22 | 2876 | if (PL_expect == XOPERATOR) |
79072805 LW |
2877 | Aop(OP_SUBTRACT); |
2878 | else { | |
3280af22 | 2879 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2880 | check_uni(); |
79072805 | 2881 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2882 | } |
79072805 | 2883 | |
378cc40b | 2884 | case '+': |
a687059c LW |
2885 | tmp = *s++; |
2886 | if (*s == tmp) { | |
378cc40b | 2887 | s++; |
3280af22 | 2888 | if (PL_expect == XOPERATOR) |
79072805 LW |
2889 | TERM(POSTINC); |
2890 | else | |
2891 | OPERATOR(PREINC); | |
378cc40b | 2892 | } |
3280af22 | 2893 | if (PL_expect == XOPERATOR) |
79072805 LW |
2894 | Aop(OP_ADD); |
2895 | else { | |
3280af22 | 2896 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2897 | check_uni(); |
a687059c | 2898 | OPERATOR('+'); |
2f3197b3 | 2899 | } |
a687059c | 2900 | |
378cc40b | 2901 | case '*': |
3280af22 NIS |
2902 | if (PL_expect != XOPERATOR) { |
2903 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2904 | PL_expect = XOPERATOR; | |
2905 | force_ident(PL_tokenbuf, '*'); | |
2906 | if (!*PL_tokenbuf) | |
a0d0e21e | 2907 | PREREF('*'); |
79072805 | 2908 | TERM('*'); |
a687059c | 2909 | } |
79072805 LW |
2910 | s++; |
2911 | if (*s == '*') { | |
a687059c | 2912 | s++; |
79072805 | 2913 | PWop(OP_POW); |
a687059c | 2914 | } |
79072805 LW |
2915 | Mop(OP_MULTIPLY); |
2916 | ||
378cc40b | 2917 | case '%': |
3280af22 | 2918 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2919 | ++s; |
2920 | Mop(OP_MODULO); | |
a687059c | 2921 | } |
3280af22 NIS |
2922 | PL_tokenbuf[0] = '%'; |
2923 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2924 | if (!PL_tokenbuf[1]) { | |
2925 | if (s == PL_bufend) | |
bbce6d69 | 2926 | yyerror("Final % should be \\% or %name"); |
2927 | PREREF('%'); | |
a687059c | 2928 | } |
3280af22 | 2929 | PL_pending_ident = '%'; |
bbce6d69 | 2930 | TERM('%'); |
a687059c | 2931 | |
378cc40b | 2932 | case '^': |
79072805 | 2933 | s++; |
a0d0e21e | 2934 | BOop(OP_BIT_XOR); |
79072805 | 2935 | case '[': |
3280af22 | 2936 | PL_lex_brackets++; |
79072805 | 2937 | /* FALL THROUGH */ |
378cc40b | 2938 | case '~': |
378cc40b | 2939 | case ',': |
378cc40b LW |
2940 | tmp = *s++; |
2941 | OPERATOR(tmp); | |
a0d0e21e LW |
2942 | case ':': |
2943 | if (s[1] == ':') { | |
2944 | len = 0; | |
2945 | goto just_a_word; | |
2946 | } | |
2947 | s++; | |
09bef843 SB |
2948 | switch (PL_expect) { |
2949 | OP *attrs; | |
2950 | case XOPERATOR: | |
2951 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2952 | break; | |
2953 | PL_bufptr = s; /* update in case we back off */ | |
2954 | goto grabattrs; | |
2955 | case XATTRBLOCK: | |
2956 | PL_expect = XBLOCK; | |
2957 | goto grabattrs; | |
2958 | case XATTRTERM: | |
2959 | PL_expect = XTERMBLOCK; | |
2960 | grabattrs: | |
2961 | s = skipspace(s); | |
2962 | attrs = Nullop; | |
7e2040f0 | 2963 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2964 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2965 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2966 | if (tmp < 0) tmp = -tmp; | |
2967 | switch (tmp) { | |
2968 | case KEY_or: | |
2969 | case KEY_and: | |
2970 | case KEY_for: | |
2971 | case KEY_unless: | |
2972 | case KEY_if: | |
2973 | case KEY_while: | |
2974 | case KEY_until: | |
2975 | goto got_attrs; | |
2976 | default: | |
2977 | break; | |
2978 | } | |
2979 | } | |
09bef843 SB |
2980 | if (*d == '(') { |
2981 | d = scan_str(d,TRUE,TRUE); | |
2982 | if (!d) { | |
09bef843 SB |
2983 | /* MUST advance bufptr here to avoid bogus |
2984 | "at end of line" context messages from yyerror(). | |
2985 | */ | |
2986 | PL_bufptr = s + len; | |
2987 | yyerror("Unterminated attribute parameter in attribute list"); | |
2988 | if (attrs) | |
2989 | op_free(attrs); | |
2990 | return 0; /* EOF indicator */ | |
2991 | } | |
2992 | } | |
2993 | if (PL_lex_stuff) { | |
2994 | SV *sv = newSVpvn(s, len); | |
2995 | sv_catsv(sv, PL_lex_stuff); | |
2996 | attrs = append_elem(OP_LIST, attrs, | |
2997 | newSVOP(OP_CONST, 0, sv)); | |
2998 | SvREFCNT_dec(PL_lex_stuff); | |
2999 | PL_lex_stuff = Nullsv; | |
3000 | } | |
3001 | else { | |
78f9721b SM |
3002 | if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
3003 | CvLVALUE_on(PL_compcv); | |
3004 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3005 | CvLOCKED_on(PL_compcv); | |
3006 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3007 | CvMETHOD_on(PL_compcv); | |
87ecf892 | 3008 | #ifdef USE_ITHREADS |
c8a3bf85 | 3009 | else if (PL_in_my == KEY_our && len == 6 && strnEQ(s, "unique", len)) |
7fb37951 | 3010 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); |
87ecf892 | 3011 | #endif |
78f9721b SM |
3012 | /* After we've set the flags, it could be argued that |
3013 | we don't need to do the attributes.pm-based setting | |
3014 | process, and shouldn't bother appending recognized | |
3015 | flags. To experiment with that, uncomment the | |
3016 | following "else": */ | |
0256094b | 3017 | else |
78f9721b SM |
3018 | attrs = append_elem(OP_LIST, attrs, |
3019 | newSVOP(OP_CONST, 0, | |
3020 | newSVpvn(s, len))); | |
09bef843 SB |
3021 | } |
3022 | s = skipspace(d); | |
0120eecf | 3023 | if (*s == ':' && s[1] != ':') |
09bef843 | 3024 | s = skipspace(s+1); |
0120eecf GS |
3025 | else if (s == d) |
3026 | break; /* require real whitespace or :'s */ | |
09bef843 | 3027 | } |
f9829d6b GS |
3028 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
3029 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
3030 | char q = ((*s == '\'') ? '"' : '\''); |
3031 | /* If here for an expression, and parsed no attrs, back off. */ | |
3032 | if (tmp == '=' && !attrs) { | |
3033 | s = PL_bufptr; | |
3034 | break; | |
3035 | } | |
3036 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3037 | context messages from yyerror(). | |
3038 | */ | |
3039 | PL_bufptr = s; | |
3040 | if (!*s) | |
3041 | yyerror("Unterminated attribute list"); | |
3042 | else | |
3043 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3044 | q, *s, q)); | |
3045 | if (attrs) | |
3046 | op_free(attrs); | |
3047 | OPERATOR(':'); | |
3048 | } | |
f9829d6b | 3049 | got_attrs: |
09bef843 SB |
3050 | if (attrs) { |
3051 | PL_nextval[PL_nexttoke].opval = attrs; | |
3052 | force_next(THING); | |
3053 | } | |
3054 | TOKEN(COLONATTR); | |
3055 | } | |
a0d0e21e | 3056 | OPERATOR(':'); |
8990e307 LW |
3057 | case '(': |
3058 | s++; | |
3280af22 NIS |
3059 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3060 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3061 | else |
3280af22 | 3062 | PL_expect = XTERM; |
a0d0e21e | 3063 | TOKEN('('); |
378cc40b | 3064 | case ';': |
f4dd75d9 | 3065 | CLINE; |
378cc40b LW |
3066 | tmp = *s++; |
3067 | OPERATOR(tmp); | |
3068 | case ')': | |
378cc40b | 3069 | tmp = *s++; |
16d20bd9 AD |
3070 | s = skipspace(s); |
3071 | if (*s == '{') | |
3072 | PREBLOCK(tmp); | |
378cc40b | 3073 | TERM(tmp); |
79072805 LW |
3074 | case ']': |
3075 | s++; | |
3280af22 | 3076 | if (PL_lex_brackets <= 0) |
d98d5fff | 3077 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3078 | else |
3280af22 NIS |
3079 | --PL_lex_brackets; |
3080 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3081 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3082 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3083 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3084 | } |
3085 | } | |
4633a7c4 | 3086 | TERM(']'); |
79072805 LW |
3087 | case '{': |
3088 | leftbracket: | |
79072805 | 3089 | s++; |
3280af22 NIS |
3090 | if (PL_lex_brackets > 100) { |
3091 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
3092 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 3093 | SAVEFREEPV(newlb); |
3280af22 | 3094 | PL_lex_brackstack = newlb; |
8990e307 LW |
3095 | } |
3096 | } | |
3280af22 | 3097 | switch (PL_expect) { |
a0d0e21e | 3098 | case XTERM: |
3280af22 | 3099 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3100 | s--; |
3101 | PRETERMBLOCK(DO); | |
3102 | } | |
3280af22 NIS |
3103 | if (PL_oldoldbufptr == PL_last_lop) |
3104 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3105 | else |
3280af22 | 3106 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3107 | OPERATOR(HASHBRACK); |
a0d0e21e | 3108 | case XOPERATOR: |
bf4acbe4 | 3109 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3110 | s++; |
44a8e56a | 3111 | d = s; |
3280af22 NIS |
3112 | PL_tokenbuf[0] = '\0'; |
3113 | if (d < PL_bufend && *d == '-') { | |
3114 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3115 | d++; |
bf4acbe4 | 3116 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3117 | d++; |
3118 | } | |
7e2040f0 | 3119 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3120 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3121 | FALSE, &len); |
bf4acbe4 | 3122 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3123 | d++; |
3124 | if (*d == '}') { | |
3280af22 | 3125 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3126 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3127 | if (minus) | |
3128 | force_next('-'); | |
748a9306 LW |
3129 | } |
3130 | } | |
3131 | /* FALL THROUGH */ | |
09bef843 | 3132 | case XATTRBLOCK: |
748a9306 | 3133 | case XBLOCK: |
3280af22 NIS |
3134 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3135 | PL_expect = XSTATE; | |
a0d0e21e | 3136 | break; |
09bef843 | 3137 | case XATTRTERM: |
a0d0e21e | 3138 | case XTERMBLOCK: |
3280af22 NIS |
3139 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3140 | PL_expect = XSTATE; | |
a0d0e21e LW |
3141 | break; |
3142 | default: { | |
3143 | char *t; | |
3280af22 NIS |
3144 | if (PL_oldoldbufptr == PL_last_lop) |
3145 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3146 | else |
3280af22 | 3147 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3148 | s = skipspace(s); |
8452ff4b SB |
3149 | if (*s == '}') { |
3150 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3151 | PL_expect = XTERM; | |
3152 | /* This hack is to get the ${} in the message. */ | |
3153 | PL_bufptr = s+1; | |
3154 | yyerror("syntax error"); | |
3155 | break; | |
3156 | } | |
a0d0e21e | 3157 | OPERATOR(HASHBRACK); |
8452ff4b | 3158 | } |
b8a4b1be GS |
3159 | /* This hack serves to disambiguate a pair of curlies |
3160 | * as being a block or an anon hash. Normally, expectation | |
3161 | * determines that, but in cases where we're not in a | |
3162 | * position to expect anything in particular (like inside | |
3163 | * eval"") we have to resolve the ambiguity. This code | |
3164 | * covers the case where the first term in the curlies is a | |
3165 | * quoted string. Most other cases need to be explicitly | |
3166 | * disambiguated by prepending a `+' before the opening | |
3167 | * curly in order to force resolution as an anon hash. | |
3168 | * | |
3169 | * XXX should probably propagate the outer expectation | |
3170 | * into eval"" to rely less on this hack, but that could | |
3171 | * potentially break current behavior of eval"". | |
3172 | * GSAR 97-07-21 | |
3173 | */ | |
3174 | t = s; | |
3175 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3176 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3177 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3178 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3179 | t++; | |
3180 | t++; | |
a0d0e21e | 3181 | } |
b8a4b1be | 3182 | else if (*s == 'q') { |
3280af22 | 3183 | if (++t < PL_bufend |
b8a4b1be | 3184 | && (!isALNUM(*t) |
3280af22 | 3185 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3186 | && !isALNUM(*t)))) |
3187 | { | |
b8a4b1be GS |
3188 | char *tmps; |
3189 | char open, close, term; | |
3190 | I32 brackets = 1; | |
3191 | ||
3280af22 | 3192 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3193 | t++; |
3194 | term = *t; | |
3195 | open = term; | |
3196 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3197 | term = tmps[5]; | |
3198 | close = term; | |
3199 | if (open == close) | |
3280af22 NIS |
3200 | for (t++; t < PL_bufend; t++) { |
3201 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3202 | t++; |
6d07e5e9 | 3203 | else if (*t == open) |
b8a4b1be GS |
3204 | break; |
3205 | } | |
3206 | else | |
3280af22 NIS |
3207 | for (t++; t < PL_bufend; t++) { |
3208 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3209 | t++; |
6d07e5e9 | 3210 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3211 | break; |
3212 | else if (*t == open) | |
3213 | brackets++; | |
3214 | } | |
3215 | } | |
3216 | t++; | |
a0d0e21e | 3217 | } |
7e2040f0 | 3218 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3219 | t += UTF8SKIP(t); |
7e2040f0 | 3220 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3221 | t += UTF8SKIP(t); |
a0d0e21e | 3222 | } |
3280af22 | 3223 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3224 | t++; |
b8a4b1be GS |
3225 | /* if comma follows first term, call it an anon hash */ |
3226 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3227 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3228 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3229 | OPERATOR(HASHBRACK); |
3280af22 | 3230 | if (PL_expect == XREF) |
4e4e412b | 3231 | PL_expect = XTERM; |
a0d0e21e | 3232 | else { |
3280af22 NIS |
3233 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3234 | PL_expect = XSTATE; | |
a0d0e21e | 3235 | } |
8990e307 | 3236 | } |
a0d0e21e | 3237 | break; |
463ee0b2 | 3238 | } |
57843af0 | 3239 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3240 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3241 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3242 | TOKEN('{'); |
378cc40b | 3243 | case '}': |
79072805 LW |
3244 | rightbracket: |
3245 | s++; | |
3280af22 | 3246 | if (PL_lex_brackets <= 0) |
d98d5fff | 3247 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3248 | else |
3280af22 | 3249 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3250 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3251 | PL_lex_formbrack = 0; |
3252 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3253 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3254 | if (PL_expect & XFAKEBRACK) { |
3255 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3256 | PL_lex_state = LEX_INTERPEND; |
3257 | PL_bufptr = s; | |
cea2e8a9 | 3258 | return yylex(); /* ignore fake brackets */ |
79072805 | 3259 | } |
fa83b5b6 | 3260 | if (*s == '-' && s[1] == '>') |
3280af22 | 3261 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3262 | else if (*s != '[' && *s != '{') |
3280af22 | 3263 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3264 | } |
3265 | } | |
9059aa12 LW |
3266 | if (PL_expect & XFAKEBRACK) { |
3267 | PL_expect &= XENUMMASK; | |
3280af22 | 3268 | PL_bufptr = s; |
cea2e8a9 | 3269 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3270 | } |
79072805 LW |
3271 | force_next('}'); |
3272 | TOKEN(';'); | |
378cc40b LW |
3273 | case '&': |
3274 | s++; | |
3275 | tmp = *s++; | |
3276 | if (tmp == '&') | |
a0d0e21e | 3277 | AOPERATOR(ANDAND); |
378cc40b | 3278 | s--; |
3280af22 | 3279 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3280 | if (ckWARN(WARN_SEMICOLON) |
3281 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3282 | { | |
57843af0 | 3283 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3284 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3285 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3286 | } |
79072805 | 3287 | BAop(OP_BIT_AND); |
463ee0b2 | 3288 | } |
79072805 | 3289 | |
3280af22 NIS |
3290 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3291 | if (*PL_tokenbuf) { | |
3292 | PL_expect = XOPERATOR; | |
3293 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3294 | } |
79072805 LW |
3295 | else |
3296 | PREREF('&'); | |
c07a80fd | 3297 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3298 | TERM('&'); |
3299 | ||
378cc40b LW |
3300 | case '|': |
3301 | s++; | |
3302 | tmp = *s++; | |
3303 | if (tmp == '|') | |
a0d0e21e | 3304 | AOPERATOR(OROR); |
378cc40b | 3305 | s--; |
79072805 | 3306 | BOop(OP_BIT_OR); |
378cc40b LW |
3307 | case '=': |
3308 | s++; | |
3309 | tmp = *s++; | |
3310 | if (tmp == '=') | |
79072805 LW |
3311 | Eop(OP_EQ); |
3312 | if (tmp == '>') | |
3313 | OPERATOR(','); | |
378cc40b | 3314 | if (tmp == '~') |
79072805 | 3315 | PMop(OP_MATCH); |
599cee73 | 3316 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3317 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3318 | s--; |
3280af22 NIS |
3319 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3320 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3321 | { |
3280af22 NIS |
3322 | if (PL_in_eval && !PL_rsfp) { |
3323 | d = PL_bufend; | |
a5f75d66 AD |
3324 | while (s < d) { |
3325 | if (*s++ == '\n') { | |
3326 | incline(s); | |
3327 | if (strnEQ(s,"=cut",4)) { | |
3328 | s = strchr(s,'\n'); | |
3329 | if (s) | |
3330 | s++; | |
3331 | else | |
3332 | s = d; | |
3333 | incline(s); | |
3334 | goto retry; | |
3335 | } | |
3336 | } | |
3337 | } | |
3338 | goto retry; | |
3339 | } | |
3280af22 NIS |
3340 | s = PL_bufend; |
3341 | PL_doextract = TRUE; | |
a0d0e21e LW |
3342 | goto retry; |
3343 | } | |
3280af22 | 3344 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3345 | char *t; |
51882d45 | 3346 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3347 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3348 | #else |
bf4acbe4 | 3349 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3350 | #endif |
a0d0e21e LW |
3351 | if (*t == '\n' || *t == '#') { |
3352 | s--; | |
3280af22 | 3353 | PL_expect = XBLOCK; |
a0d0e21e LW |
3354 | goto leftbracket; |
3355 | } | |
79072805 | 3356 | } |
a0d0e21e LW |
3357 | yylval.ival = 0; |
3358 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3359 | case '!': |
3360 | s++; | |
3361 | tmp = *s++; | |
3362 | if (tmp == '=') | |
79072805 | 3363 | Eop(OP_NE); |
378cc40b | 3364 | if (tmp == '~') |
79072805 | 3365 | PMop(OP_NOT); |
378cc40b LW |
3366 | s--; |
3367 | OPERATOR('!'); | |
3368 | case '<': | |
3280af22 | 3369 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3370 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3371 | check_uni(); |
79072805 LW |
3372 | if (s[1] == '<') |
3373 | s = scan_heredoc(s); | |
3374 | else | |
3375 | s = scan_inputsymbol(s); | |
3376 | TERM(sublex_start()); | |
378cc40b LW |
3377 | } |
3378 | s++; | |
3379 | tmp = *s++; | |
3380 | if (tmp == '<') | |
79072805 | 3381 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3382 | if (tmp == '=') { |
3383 | tmp = *s++; | |
3384 | if (tmp == '>') | |
79072805 | 3385 | Eop(OP_NCMP); |
395c3793 | 3386 | s--; |
79072805 | 3387 | Rop(OP_LE); |
395c3793 | 3388 | } |
378cc40b | 3389 | s--; |
79072805 | 3390 | Rop(OP_LT); |
378cc40b LW |
3391 | case '>': |
3392 | s++; | |
3393 | tmp = *s++; | |
3394 | if (tmp == '>') | |
79072805 | 3395 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3396 | if (tmp == '=') |
79072805 | 3397 | Rop(OP_GE); |
378cc40b | 3398 | s--; |
79072805 | 3399 | Rop(OP_GT); |
378cc40b LW |
3400 | |
3401 | case '$': | |
bbce6d69 | 3402 | CLINE; |
3403 | ||
3280af22 NIS |
3404 | if (PL_expect == XOPERATOR) { |
3405 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3406 | PL_expect = XTERM; | |
a0d0e21e | 3407 | depcom(); |
bbce6d69 | 3408 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3409 | } |
8990e307 | 3410 | } |
a0d0e21e | 3411 | |
7e2040f0 | 3412 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3413 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3414 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3415 | sizeof PL_tokenbuf - 1, FALSE); | |
3416 | if (PL_expect == XOPERATOR) | |
3417 | no_op("Array length", s); | |
3280af22 | 3418 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3419 | PREREF(DOLSHARP); |
3280af22 NIS |
3420 | PL_expect = XOPERATOR; |
3421 | PL_pending_ident = '#'; | |
463ee0b2 | 3422 | TOKEN(DOLSHARP); |
79072805 | 3423 | } |
bbce6d69 | 3424 | |
3280af22 | 3425 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3426 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3427 | sizeof PL_tokenbuf - 1, FALSE); | |
3428 | if (PL_expect == XOPERATOR) | |
3429 | no_op("Scalar", s); | |
3280af22 NIS |
3430 | if (!PL_tokenbuf[1]) { |
3431 | if (s == PL_bufend) | |
bbce6d69 | 3432 | yyerror("Final $ should be \\$ or $name"); |
3433 | PREREF('$'); | |
8990e307 | 3434 | } |
a0d0e21e | 3435 | |
bbce6d69 | 3436 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3437 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3438 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3439 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3440 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3441 | TERM(THING); | |
3442 | } | |
3443 | ||
ff68c719 | 3444 | d = s; |
69d2bceb | 3445 | tmp = (I32)*s; |
3280af22 | 3446 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3447 | s = skipspace(s); |
3448 | ||
3280af22 | 3449 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3450 | char *t; |
3451 | if (*s == '[') { | |
3280af22 | 3452 | PL_tokenbuf[0] = '@'; |
599cee73 | 3453 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3454 | for(t = s + 1; |
7e2040f0 | 3455 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3456 | t++) ; |
a0d0e21e | 3457 | if (*t++ == ',') { |
3280af22 NIS |
3458 | PL_bufptr = skipspace(PL_bufptr); |
3459 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3460 | t++; |
cea2e8a9 | 3461 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3462 | "Multidimensional syntax %.*s not supported", |
3463 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3464 | } |
3465 | } | |
bbce6d69 | 3466 | } |
3467 | else if (*s == '{') { | |
3280af22 | 3468 | PL_tokenbuf[0] = '%'; |
599cee73 | 3469 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3470 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3471 | { | |
3280af22 | 3472 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3473 | STRLEN len; |
3474 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3475 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3476 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3477 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3478 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3479 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3480 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3481 | } |
93a17b20 LW |
3482 | } |
3483 | } | |
2f3197b3 | 3484 | } |
bbce6d69 | 3485 | |
3280af22 | 3486 | PL_expect = XOPERATOR; |
69d2bceb | 3487 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3488 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3489 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3490 | PL_expect = XOPERATOR; | |
bbce6d69 | 3491 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3492 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3493 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3494 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3495 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3496 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3497 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3498 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3499 | /* binary operators exclude handle interpretations */ |
3500 | switch (tmp) { | |
3501 | case -KEY_x: | |
3502 | case -KEY_eq: | |
3503 | case -KEY_ne: | |
3504 | case -KEY_gt: | |
3505 | case -KEY_lt: | |
3506 | case -KEY_ge: | |
3507 | case -KEY_le: | |
3508 | case -KEY_cmp: | |
3509 | break; | |
3510 | default: | |
3280af22 | 3511 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3512 | break; |
3513 | } | |
3514 | } | |
68dc0745 | 3515 | else { |
3516 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3517 | if (gv && GvCVu(gv)) | |
3280af22 | 3518 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3519 | } |
93a17b20 | 3520 | } |
bbce6d69 | 3521 | else if (isDIGIT(*s)) |
3280af22 | 3522 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3523 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3524 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3525 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3526 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3527 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3528 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3529 | } |
3280af22 | 3530 | PL_pending_ident = '$'; |
79072805 | 3531 | TOKEN('$'); |
378cc40b LW |
3532 | |
3533 | case '@': | |
3280af22 | 3534 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3535 | no_op("Array", s); |
3280af22 NIS |
3536 | PL_tokenbuf[0] = '@'; |
3537 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3538 | if (!PL_tokenbuf[1]) { | |
3539 | if (s == PL_bufend) | |
bbce6d69 | 3540 | yyerror("Final @ should be \\@ or @name"); |
3541 | PREREF('@'); | |
3542 | } | |
3280af22 | 3543 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3544 | s = skipspace(s); |
3280af22 | 3545 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3546 | if (*s == '{') |
3280af22 | 3547 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3548 | |
3549 | /* Warn about @ where they meant $. */ | |
599cee73 | 3550 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3551 | if (*s == '[' || *s == '{') { |
3552 | char *t = s + 1; | |
7e2040f0 | 3553 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3554 | t++; |
3555 | if (*t == '}' || *t == ']') { | |
3556 | t++; | |
3280af22 | 3557 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3558 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3559 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3560 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3561 | } |
93a17b20 LW |
3562 | } |
3563 | } | |
463ee0b2 | 3564 | } |
3280af22 | 3565 | PL_pending_ident = '@'; |
79072805 | 3566 | TERM('@'); |
378cc40b LW |
3567 | |
3568 | case '/': /* may either be division or pattern */ | |
3569 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3570 | if (PL_expect != XOPERATOR) { |
c277df42 | 3571 | /* Disable warning on "study /blah/" */ |
4e553d73 NIS |
3572 | if (PL_oldoldbufptr == PL_last_uni |
3573 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3574 | || memNE(PL_last_uni, "study", 5) |
3575 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3576 | check_uni(); |
8782bef2 | 3577 | s = scan_pat(s,OP_MATCH); |
79072805 | 3578 | TERM(sublex_start()); |
378cc40b LW |
3579 | } |
3580 | tmp = *s++; | |
a687059c | 3581 | if (tmp == '/') |
79072805 | 3582 | Mop(OP_DIVIDE); |
378cc40b LW |
3583 | OPERATOR(tmp); |
3584 | ||
3585 | case '.': | |
51882d45 GS |
3586 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3587 | #ifdef PERL_STRICT_CR | |
3588 | && s[1] == '\n' | |
3589 | #else | |
3590 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3591 | #endif | |
3592 | && (s == PL_linestart || s[-1] == '\n') ) | |
3593 | { | |
3280af22 NIS |
3594 | PL_lex_formbrack = 0; |
3595 | PL_expect = XSTATE; | |
79072805 LW |
3596 | goto rightbracket; |
3597 | } | |
3280af22 | 3598 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3599 | tmp = *s++; |
a687059c LW |
3600 | if (*s == tmp) { |
3601 | s++; | |
2f3197b3 LW |
3602 | if (*s == tmp) { |
3603 | s++; | |
79072805 | 3604 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3605 | } |
3606 | else | |
79072805 | 3607 | yylval.ival = 0; |
378cc40b | 3608 | OPERATOR(DOTDOT); |
a687059c | 3609 | } |
3280af22 | 3610 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3611 | check_uni(); |
79072805 | 3612 | Aop(OP_CONCAT); |
378cc40b LW |
3613 | } |
3614 | /* FALL THROUGH */ | |
3615 | case '0': case '1': case '2': case '3': case '4': | |
3616 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3617 | s = scan_num(s, &yylval); |
4e553d73 | 3618 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3619 | "### Saw number in '%s'\n", s); |
5f80b19c | 3620 | } ); |
3280af22 | 3621 | if (PL_expect == XOPERATOR) |
8990e307 | 3622 | no_op("Number",s); |
79072805 LW |
3623 | TERM(THING); |
3624 | ||
3625 | case '\'': | |
09bef843 | 3626 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3627 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3628 | "### Saw string before '%s'\n", s); |
5f80b19c | 3629 | } ); |
3280af22 NIS |
3630 | if (PL_expect == XOPERATOR) { |
3631 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3632 | PL_expect = XTERM; | |
a0d0e21e LW |
3633 | depcom(); |
3634 | return ','; /* grandfather non-comma-format format */ | |
3635 | } | |
463ee0b2 | 3636 | else |
8990e307 | 3637 | no_op("String",s); |
463ee0b2 | 3638 | } |
79072805 | 3639 | if (!s) |
85e6fe83 | 3640 | missingterm((char*)0); |
79072805 LW |
3641 | yylval.ival = OP_CONST; |
3642 | TERM(sublex_start()); | |
3643 | ||
3644 | case '"': | |
09bef843 | 3645 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3646 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3647 | "### Saw string before '%s'\n", s); |
5f80b19c | 3648 | } ); |
3280af22 NIS |
3649 | if (PL_expect == XOPERATOR) { |
3650 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3651 | PL_expect = XTERM; | |
a0d0e21e LW |
3652 | depcom(); |
3653 | return ','; /* grandfather non-comma-format format */ | |
3654 | } | |
463ee0b2 | 3655 | else |
8990e307 | 3656 | no_op("String",s); |
463ee0b2 | 3657 | } |
79072805 | 3658 | if (!s) |
85e6fe83 | 3659 | missingterm((char*)0); |
4633a7c4 | 3660 | yylval.ival = OP_CONST; |
3280af22 | 3661 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3662 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3663 | yylval.ival = OP_STRINGIFY; |
3664 | break; | |
3665 | } | |
3666 | } | |
79072805 LW |
3667 | TERM(sublex_start()); |
3668 | ||
3669 | case '`': | |
09bef843 | 3670 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3671 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3672 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3673 | } ); |
3280af22 | 3674 | if (PL_expect == XOPERATOR) |
8990e307 | 3675 | no_op("Backticks",s); |
79072805 | 3676 | if (!s) |
85e6fe83 | 3677 | missingterm((char*)0); |
79072805 LW |
3678 | yylval.ival = OP_BACKTICK; |
3679 | set_csh(); | |
3680 | TERM(sublex_start()); | |
3681 | ||
3682 | case '\\': | |
3683 | s++; | |
599cee73 | 3684 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3685 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3686 | *s, *s); |
3280af22 | 3687 | if (PL_expect == XOPERATOR) |
8990e307 | 3688 | no_op("Backslash",s); |
79072805 LW |
3689 | OPERATOR(REFGEN); |
3690 | ||
a7cb1f99 | 3691 | case 'v': |
e526c9e6 | 3692 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3693 | char *start = s; |
3694 | start++; | |
3695 | start++; | |
dd629d5b | 3696 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3697 | start++; |
3698 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3699 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3700 | TERM(THING); |
3701 | } | |
e526c9e6 | 3702 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
62ec34bd | 3703 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF || PL_expect == XSTATE)) { |
e526c9e6 GS |
3704 | char c = *start; |
3705 | GV *gv; | |
3706 | *start = '\0'; | |
3707 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3708 | *start = c; | |
3709 | if (!gv) { | |
b73d6f50 | 3710 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3711 | TERM(THING); |
3712 | } | |
3713 | } | |
a7cb1f99 GS |
3714 | } |
3715 | goto keylookup; | |
79072805 | 3716 | case 'x': |
3280af22 | 3717 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3718 | s++; |
3719 | Mop(OP_REPEAT); | |
2f3197b3 | 3720 | } |
79072805 LW |
3721 | goto keylookup; |
3722 | ||
378cc40b | 3723 | case '_': |
79072805 LW |
3724 | case 'a': case 'A': |
3725 | case 'b': case 'B': | |
3726 | case 'c': case 'C': | |
3727 | case 'd': case 'D': | |
3728 | case 'e': case 'E': | |
3729 | case 'f': case 'F': | |
3730 | case 'g': case 'G': | |
3731 | case 'h': case 'H': | |
3732 | case 'i': case 'I': | |
3733 | case 'j': case 'J': | |
3734 | case 'k': case 'K': | |
3735 | case 'l': case 'L': | |
3736 | case 'm': case 'M': | |
3737 | case 'n': case 'N': | |
3738 | case 'o': case 'O': | |
3739 | case 'p': case 'P': | |
3740 | case 'q': case 'Q': | |
3741 | case 'r': case 'R': | |
3742 | case 's': case 'S': | |
3743 | case 't': case 'T': | |
3744 | case 'u': case 'U': | |
a7cb1f99 | 3745 | case 'V': |
79072805 LW |
3746 | case 'w': case 'W': |
3747 | case 'X': | |
3748 | case 'y': case 'Y': | |
3749 | case 'z': case 'Z': | |
3750 | ||
49dc05e3 | 3751 | keylookup: { |
161b471a NIS |
3752 | gv = Nullgv; |
3753 | gvp = 0; | |
49dc05e3 | 3754 | |
3280af22 NIS |
3755 | PL_bufptr = s; |
3756 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3757 | |
3758 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3759 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3760 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3761 | (PL_tokenbuf[0] == 'q' && | |
3762 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3763 | |
3764 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3765 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3766 | goto just_a_word; |
3767 | ||
3643fb5f | 3768 | d = s; |
3280af22 | 3769 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3770 | d++; /* no comments skipped here, or s### is misparsed */ |
3771 | ||
3772 | /* Is this a label? */ | |
3280af22 NIS |
3773 | if (!tmp && PL_expect == XSTATE |
3774 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3775 | s = d + 1; |
3280af22 | 3776 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3777 | CLINE; |
3778 | TOKEN(LABEL); | |
3643fb5f CS |
3779 | } |
3780 | ||
3781 | /* Check for keywords */ | |
3280af22 | 3782 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3783 | |
3784 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3785 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3786 | CLINE; |
3280af22 | 3787 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 3788 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 3789 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3790 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
3791 | TERM(WORD); |
3792 | } | |
3793 | ||
a0d0e21e | 3794 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3795 | GV *ogv = Nullgv; /* override (winner) */ |
3796 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3797 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3798 | CV *cv; |
3280af22 | 3799 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3800 | (cv = GvCVu(gv))) |
3801 | { | |
3802 | if (GvIMPORTED_CV(gv)) | |
3803 | ogv = gv; | |
3804 | else if (! CvMETHOD(cv)) | |
3805 | hgv = gv; | |
3806 | } | |
3807 | if (!ogv && | |
3280af22 NIS |
3808 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3809 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3810 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3811 | { | |
3812 | ogv = gv; | |
3813 | } | |
3814 | } | |
3815 | if (ogv) { | |
3816 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3817 | } |
3818 | else if (gv && !gvp | |
3819 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3820 | && GvCVu(gv) |
3280af22 | 3821 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3822 | { |
3823 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3824 | } |
56f7f34b CS |
3825 | else { /* no override */ |
3826 | tmp = -tmp; | |
ac206dc8 RGS |
3827 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
3828 | Perl_warner(aTHX_ WARN_MISC, | |
3829 | "dump() better written as CORE::dump()"); | |
3830 | } | |
56f7f34b CS |
3831 | gv = Nullgv; |
3832 | gvp = 0; | |
4944e2f7 GS |
3833 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3834 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3835 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3836 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3837 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3838 | } |
a0d0e21e LW |
3839 | } |
3840 | ||
3841 | reserved_word: | |
3842 | switch (tmp) { | |
79072805 LW |
3843 | |
3844 | default: /* not a keyword */ | |
93a17b20 | 3845 | just_a_word: { |
96e4d5b1 | 3846 | SV *sv; |
ce29ac45 | 3847 | int pkgname = 0; |
3280af22 | 3848 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3849 | |
3850 | /* Get the rest if it looks like a package qualifier */ | |
3851 | ||
155aba94 | 3852 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3853 | STRLEN morelen; |
3280af22 | 3854 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3855 | TRUE, &morelen); |
3856 | if (!morelen) | |
cea2e8a9 | 3857 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3858 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3859 | len += morelen; |
ce29ac45 | 3860 | pkgname = 1; |
a0d0e21e | 3861 | } |
8990e307 | 3862 | |
3280af22 NIS |
3863 | if (PL_expect == XOPERATOR) { |
3864 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3865 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3866 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3867 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3868 | } |
3869 | else | |
54310121 | 3870 | no_op("Bareword",s); |
463ee0b2 | 3871 | } |
8990e307 | 3872 | |
c3e0f903 GS |
3873 | /* Look for a subroutine with this name in current package, |
3874 | unless name is "Foo::", in which case Foo is a bearword | |
3875 | (and a package name). */ | |
3876 | ||
3877 | if (len > 2 && | |
3280af22 | 3878 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3879 | { |
e476b1b5 | 3880 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
4e553d73 | 3881 | Perl_warner(aTHX_ WARN_BAREWORD, |
599cee73 | 3882 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3883 | PL_tokenbuf); |
c3e0f903 | 3884 | len -= 2; |
3280af22 | 3885 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3886 | gv = Nullgv; |
3887 | gvp = 0; | |
3888 | } | |
3889 | else { | |
3890 | len = 0; | |
3891 | if (!gv) | |
3280af22 | 3892 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3893 | } |
3894 | ||
3895 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3896 | |
49dc05e3 | 3897 | if (gvp) { |
79cb57f6 | 3898 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3899 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3900 | } |
3901 | else | |
3280af22 | 3902 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3903 | |
a0d0e21e LW |
3904 | /* Presume this is going to be a bareword of some sort. */ |
3905 | ||
3906 | CLINE; | |
49dc05e3 | 3907 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3908 | yylval.opval->op_private = OPpCONST_BARE; |
3909 | ||
c3e0f903 GS |
3910 | /* And if "Foo::", then that's what it certainly is. */ |
3911 | ||
3912 | if (len) | |
3913 | goto safe_bareword; | |
3914 | ||
8990e307 LW |
3915 | /* See if it's the indirect object for a list operator. */ |
3916 | ||
3280af22 NIS |
3917 | if (PL_oldoldbufptr && |
3918 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3919 | (PL_oldoldbufptr == PL_last_lop |
3920 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3921 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3922 | (PL_expect == XREF || |
3923 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3924 | { |
748a9306 LW |
3925 | bool immediate_paren = *s == '('; |
3926 | ||
a0d0e21e LW |
3927 | /* (Now we can afford to cross potential line boundary.) */ |
3928 | s = skipspace(s); | |
3929 | ||
3930 | /* Two barewords in a row may indicate method call. */ | |
3931 | ||
7e2040f0 | 3932 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3933 | return tmp; |
3934 | ||
3935 | /* If not a declared subroutine, it's an indirect object. */ | |
3936 | /* (But it's an indir obj regardless for sort.) */ | |
3937 | ||
7948272d | 3938 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 3939 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 3940 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 3941 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 3942 | { |
3280af22 | 3943 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3944 | goto bareword; |
93a17b20 LW |
3945 | } |
3946 | } | |
8990e307 | 3947 | |
3280af22 | 3948 | PL_expect = XOPERATOR; |
8990e307 | 3949 | s = skipspace(s); |
1c3923b3 GS |
3950 | |
3951 | /* Is this a word before a => operator? */ | |
ce29ac45 | 3952 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
3953 | CLINE; |
3954 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 3955 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 3956 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
3957 | TERM(WORD); |
3958 | } | |
3959 | ||
3960 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 3961 | if (*s == '(') { |
79072805 | 3962 | CLINE; |
96e4d5b1 | 3963 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 3964 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 3965 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3966 | s = d + 1; |
3967 | goto its_constant; | |
3968 | } | |
3969 | } | |
3280af22 NIS |
3970 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3971 | PL_expect = XOPERATOR; | |
93a17b20 | 3972 | force_next(WORD); |
c07a80fd | 3973 | yylval.ival = 0; |
463ee0b2 | 3974 | TOKEN('&'); |
79072805 | 3975 | } |
93a17b20 | 3976 | |
a0d0e21e | 3977 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3978 | |
8ebc5c01 | 3979 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3980 | PL_last_lop = PL_oldbufptr; |
3981 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3982 | PREBLOCK(METHOD); |
463ee0b2 LW |
3983 | } |
3984 | ||
8990e307 LW |
3985 | /* If followed by a bareword, see if it looks like indir obj. */ |
3986 | ||
7e2040f0 | 3987 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3988 | return tmp; |
93a17b20 | 3989 | |
8990e307 LW |
3990 | /* Not a method, so call it a subroutine (if defined) */ |
3991 | ||
8ebc5c01 | 3992 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3993 | CV* cv; |
0453d815 PM |
3994 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3995 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3996 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3997 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3998 | /* Check for a constant sub */ |
46fc3d4c | 3999 | cv = GvCV(gv); |
96e4d5b1 | 4000 | if ((sv = cv_const_sv(cv))) { |
4001 | its_constant: | |
4002 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4003 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4004 | yylval.opval->op_private = 0; | |
4005 | TOKEN(WORD); | |
89bfa8cd | 4006 | } |
4007 | ||
a5f75d66 AD |
4008 | /* Resolve to GV now. */ |
4009 | op_free(yylval.opval); | |
4010 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4011 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4012 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4013 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4014 | /* Is there a prototype? */ |
4015 | if (SvPOK(cv)) { | |
4016 | STRLEN len; | |
7a52d87a | 4017 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4018 | if (!len) |
4019 | TERM(FUNC0SUB); | |
7a52d87a | 4020 | if (strEQ(proto, "$")) |
4633a7c4 | 4021 | OPERATOR(UNIOPSUB); |
7a52d87a | 4022 | if (*proto == '&' && *s == '{') { |
3280af22 | 4023 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
4024 | PREBLOCK(LSTOPSUB); |
4025 | } | |
a9ef352a | 4026 | } |
3280af22 NIS |
4027 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4028 | PL_expect = XTERM; | |
8990e307 LW |
4029 | force_next(WORD); |
4030 | TOKEN(NOAMP); | |
4031 | } | |
748a9306 | 4032 | |
8990e307 LW |
4033 | /* Call it a bare word */ |
4034 | ||
5603f27d GS |
4035 | if (PL_hints & HINT_STRICT_SUBS) |
4036 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4037 | else { | |
4038 | bareword: | |
4039 | if (ckWARN(WARN_RESERVED)) { | |
4040 | if (lastchar != '-') { | |
4041 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
9bbb1ada | 4042 | if (!*d && strNE(PL_tokenbuf,"main")) |
cea2e8a9 | 4043 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
4044 | PL_tokenbuf); |
4045 | } | |
748a9306 LW |
4046 | } |
4047 | } | |
c3e0f903 GS |
4048 | |
4049 | safe_bareword: | |
f248d071 | 4050 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
4051 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
4052 | "Operator or semicolon missing before %c%s", | |
3280af22 | 4053 | lastchar, PL_tokenbuf); |
0453d815 PM |
4054 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
4055 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
4056 | lastchar, lastchar); |
4057 | } | |
93a17b20 | 4058 | TOKEN(WORD); |
79072805 | 4059 | } |
79072805 | 4060 | |
68dc0745 | 4061 | case KEY___FILE__: |
46fc3d4c | 4062 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4063 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4064 | TERM(THING); |
4065 | ||
79072805 | 4066 | case KEY___LINE__: |
cf2093f6 | 4067 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4068 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4069 | TERM(THING); |
68dc0745 | 4070 | |
4071 | case KEY___PACKAGE__: | |
4072 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
4073 | (PL_curstash |
4074 | ? newSVsv(PL_curstname) | |
4075 | : &PL_sv_undef)); | |
79072805 | 4076 | TERM(THING); |
79072805 | 4077 | |
e50aee73 | 4078 | case KEY___DATA__: |
79072805 LW |
4079 | case KEY___END__: { |
4080 | GV *gv; | |
79072805 LW |
4081 | |
4082 | /*SUPPRESS 560*/ | |
3280af22 | 4083 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4084 | char *pname = "main"; |
3280af22 NIS |
4085 | if (PL_tokenbuf[2] == 'D') |
4086 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4087 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4088 | GvMULTI_on(gv); |
79072805 | 4089 | if (!GvIO(gv)) |
a0d0e21e | 4090 | GvIOp(gv) = newIO(); |
3280af22 | 4091 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4092 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4093 | { | |
3280af22 | 4094 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4095 | fcntl(fd,F_SETFD,fd >= 3); |
4096 | } | |
79072805 | 4097 | #endif |
fd049845 | 4098 | /* Mark this internal pseudo-handle as clean */ |
4099 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4100 | if (PL_preprocess) |
50952442 | 4101 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4102 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4103 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4104 | else |
50952442 | 4105 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4106 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4107 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4108 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4109 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4110 | if (PL_bufend-PL_bufptr > 2 |
4111 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4112 | { |
4113 | Off_t loc = 0; | |
50952442 | 4114 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4115 | loc = PerlIO_tell(PL_rsfp); |
4116 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4117 | } | |
2986a63f JH |
4118 | #ifdef NETWARE |
4119 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4120 | #else | |
c39cd008 | 4121 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4122 | #endif /* NETWARE */ |
1143fce0 JH |
4123 | #ifdef PERLIO_IS_STDIO /* really? */ |
4124 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4125 | /* XXX see note in do_binmode() */ |
4126 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4127 | # endif |
4128 | #endif | |
c39cd008 GS |
4129 | if (loc > 0) |
4130 | PerlIO_seek(PL_rsfp, loc, 0); | |
4131 | } | |
4132 | } | |
4133 | #endif | |
7948272d | 4134 | #ifdef PERLIO_LAYERS |
0064a8a9 | 4135 | if (UTF && !IN_BYTES) |
7948272d NIS |
4136 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); |
4137 | #endif | |
3280af22 | 4138 | PL_rsfp = Nullfp; |
79072805 LW |
4139 | } |
4140 | goto fake_eof; | |
e929a76b | 4141 | } |
de3bb511 | 4142 | |
8990e307 | 4143 | case KEY_AUTOLOAD: |
ed6116ce | 4144 | case KEY_DESTROY: |
79072805 | 4145 | case KEY_BEGIN: |
7d30b5c4 | 4146 | case KEY_CHECK: |
7d07dbc2 | 4147 | case KEY_INIT: |
7d30b5c4 | 4148 | case KEY_END: |
3280af22 NIS |
4149 | if (PL_expect == XSTATE) { |
4150 | s = PL_bufptr; | |
93a17b20 | 4151 | goto really_sub; |
79072805 LW |
4152 | } |
4153 | goto just_a_word; | |
4154 | ||
a0d0e21e LW |
4155 | case KEY_CORE: |
4156 | if (*s == ':' && s[1] == ':') { | |
4157 | s += 2; | |
748a9306 | 4158 | d = s; |
3280af22 | 4159 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4160 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4161 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4162 | if (tmp < 0) |
4163 | tmp = -tmp; | |
4164 | goto reserved_word; | |
4165 | } | |
4166 | goto just_a_word; | |
4167 | ||
463ee0b2 LW |
4168 | case KEY_abs: |
4169 | UNI(OP_ABS); | |
4170 | ||
79072805 LW |
4171 | case KEY_alarm: |
4172 | UNI(OP_ALARM); | |
4173 | ||
4174 | case KEY_accept: | |
a0d0e21e | 4175 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4176 | |
463ee0b2 LW |
4177 | case KEY_and: |
4178 | OPERATOR(ANDOP); | |
4179 | ||
79072805 | 4180 | case KEY_atan2: |
a0d0e21e | 4181 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4182 | |
79072805 | 4183 | case KEY_bind: |
a0d0e21e | 4184 | LOP(OP_BIND,XTERM); |
79072805 LW |
4185 | |
4186 | case KEY_binmode: | |
1c1fc3ea | 4187 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4188 | |
4189 | case KEY_bless: | |
a0d0e21e | 4190 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4191 | |
4192 | case KEY_chop: | |
4193 | UNI(OP_CHOP); | |
4194 | ||
4195 | case KEY_continue: | |
4196 | PREBLOCK(CONTINUE); | |
4197 | ||
4198 | case KEY_chdir: | |
85e6fe83 | 4199 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4200 | UNI(OP_CHDIR); |
4201 | ||
4202 | case KEY_close: | |
4203 | UNI(OP_CLOSE); | |
4204 | ||
4205 | case KEY_closedir: | |
4206 | UNI(OP_CLOSEDIR); | |
4207 | ||
4208 | case KEY_cmp: | |
4209 | Eop(OP_SCMP); | |
4210 | ||
4211 | case KEY_caller: | |
4212 | UNI(OP_CALLER); | |
4213 | ||
4214 | case KEY_crypt: | |
4215 | #ifdef FCRYPT | |
f4c556ac GS |
4216 | if (!PL_cryptseen) { |
4217 | PL_cryptseen = TRUE; | |
de3bb511 | 4218 | init_des(); |
f4c556ac | 4219 | } |
a687059c | 4220 | #endif |
a0d0e21e | 4221 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4222 | |
4223 | case KEY_chmod: | |
a0d0e21e | 4224 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4225 | |
4226 | case KEY_chown: | |
a0d0e21e | 4227 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4228 | |
4229 | case KEY_connect: | |
a0d0e21e | 4230 | LOP(OP_CONNECT,XTERM); |
79072805 | 4231 | |
463ee0b2 LW |
4232 | case KEY_chr: |
4233 | UNI(OP_CHR); | |
4234 | ||
79072805 LW |
4235 | case KEY_cos: |
4236 | UNI(OP_COS); | |
4237 | ||
4238 | case KEY_chroot: | |
4239 | UNI(OP_CHROOT); | |
4240 | ||
4241 | case KEY_do: | |
4242 | s = skipspace(s); | |
4243 | if (*s == '{') | |
a0d0e21e | 4244 | PRETERMBLOCK(DO); |
79072805 | 4245 | if (*s != '\'') |
89c5585f | 4246 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4247 | OPERATOR(DO); |
79072805 LW |
4248 | |
4249 | case KEY_die: | |
3280af22 | 4250 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4251 | LOP(OP_DIE,XTERM); |
79072805 LW |
4252 | |
4253 | case KEY_defined: | |
4254 | UNI(OP_DEFINED); | |
4255 | ||
4256 | case KEY_delete: | |
a0d0e21e | 4257 | UNI(OP_DELETE); |
79072805 LW |
4258 | |
4259 | case KEY_dbmopen: | |
a0d0e21e LW |
4260 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4261 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4262 | |
4263 | case KEY_dbmclose: | |
4264 | UNI(OP_DBMCLOSE); | |
4265 | ||
4266 | case KEY_dump: | |
a0d0e21e | 4267 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4268 | LOOPX(OP_DUMP); |
4269 | ||
4270 | case KEY_else: | |
4271 | PREBLOCK(ELSE); | |
4272 | ||
4273 | case KEY_elsif: | |
57843af0 | 4274 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4275 | OPERATOR(ELSIF); |
4276 | ||
4277 | case KEY_eq: | |
4278 | Eop(OP_SEQ); | |
4279 | ||
a0d0e21e LW |
4280 | case KEY_exists: |
4281 | UNI(OP_EXISTS); | |
4e553d73 | 4282 | |
79072805 LW |
4283 | case KEY_exit: |
4284 | UNI(OP_EXIT); | |
4285 | ||
4286 | case KEY_eval: | |
79072805 | 4287 | s = skipspace(s); |
3280af22 | 4288 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4289 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4290 | |
4291 | case KEY_eof: | |
4292 | UNI(OP_EOF); | |
4293 | ||
4294 | case KEY_exp: | |
4295 | UNI(OP_EXP); | |
4296 | ||
4297 | case KEY_each: | |
4298 | UNI(OP_EACH); | |
4299 | ||
4300 | case KEY_exec: | |
4301 | set_csh(); | |
a0d0e21e | 4302 | LOP(OP_EXEC,XREF); |
79072805 LW |
4303 | |
4304 | case KEY_endhostent: | |
4305 | FUN0(OP_EHOSTENT); | |
4306 | ||
4307 | case KEY_endnetent: | |
4308 | FUN0(OP_ENETENT); | |
4309 | ||
4310 | case KEY_endservent: | |
4311 | FUN0(OP_ESERVENT); | |
4312 | ||
4313 | case KEY_endprotoent: | |
4314 | FUN0(OP_EPROTOENT); | |
4315 | ||
4316 | case KEY_endpwent: | |
4317 | FUN0(OP_EPWENT); | |
4318 | ||
4319 | case KEY_endgrent: | |
4320 | FUN0(OP_EGRENT); | |
4321 | ||
4322 | case KEY_for: | |
4323 | case KEY_foreach: | |
57843af0 | 4324 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4325 | s = skipspace(s); |
7e2040f0 | 4326 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4327 | char *p = s; |
3280af22 | 4328 | if ((PL_bufend - p) >= 3 && |
55497cff | 4329 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4330 | p += 2; | |
77ca0c92 LW |
4331 | else if ((PL_bufend - p) >= 4 && |
4332 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4333 | p += 3; | |
55497cff | 4334 | p = skipspace(p); |
7e2040f0 | 4335 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4336 | p = scan_ident(p, PL_bufend, |
4337 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4338 | p = skipspace(p); | |
4339 | } | |
4340 | if (*p != '$') | |
cea2e8a9 | 4341 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4342 | } |
79072805 LW |
4343 | OPERATOR(FOR); |
4344 | ||
4345 | case KEY_formline: | |
a0d0e21e | 4346 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4347 | |
4348 | case KEY_fork: | |
4349 | FUN0(OP_FORK); | |
4350 | ||
4351 | case KEY_fcntl: | |
a0d0e21e | 4352 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4353 | |
4354 | case KEY_fileno: | |
4355 | UNI(OP_FILENO); | |
4356 | ||
4357 | case KEY_flock: | |
a0d0e21e | 4358 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4359 | |
4360 | case KEY_gt: | |
4361 | Rop(OP_SGT); | |
4362 | ||
4363 | case KEY_ge: | |
4364 | Rop(OP_SGE); | |
4365 | ||
4366 | case KEY_grep: | |
2c38e13d | 4367 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4368 | |
4369 | case KEY_goto: | |
a0d0e21e | 4370 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4371 | LOOPX(OP_GOTO); |
4372 | ||
4373 | case KEY_gmtime: | |
4374 | UNI(OP_GMTIME); | |
4375 | ||
4376 | case KEY_getc: | |
4377 | UNI(OP_GETC); | |
4378 | ||
4379 | case KEY_getppid: | |
4380 | FUN0(OP_GETPPID); | |
4381 | ||
4382 | case KEY_getpgrp: | |
4383 | UNI(OP_GETPGRP); | |
4384 | ||
4385 | case KEY_getpriority: | |
a0d0e21e | 4386 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4387 | |
4388 | case KEY_getprotobyname: | |
4389 | UNI(OP_GPBYNAME); | |
4390 | ||
4391 | case KEY_getprotobynumber: | |
a0d0e21e | 4392 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4393 | |
4394 | case KEY_getprotoent: | |
4395 | FUN0(OP_GPROTOENT); | |
4396 | ||
4397 | case KEY_getpwent: | |
4398 | FUN0(OP_GPWENT); | |
4399 | ||
4400 | case KEY_getpwnam: | |
ff68c719 | 4401 | UNI(OP_GPWNAM); |
79072805 LW |
4402 | |
4403 | case KEY_getpwuid: | |
ff68c719 | 4404 | UNI(OP_GPWUID); |
79072805 LW |
4405 | |
4406 | case KEY_getpeername: | |
4407 | UNI(OP_GETPEERNAME); | |
4408 | ||
4409 | case KEY_gethostbyname: | |
4410 | UNI(OP_GHBYNAME); | |
4411 | ||
4412 | case KEY_gethostbyaddr: | |
a0d0e21e | 4413 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4414 | |
4415 | case KEY_gethostent: | |
4416 | FUN0(OP_GHOSTENT); | |
4417 | ||
4418 | case KEY_getnetbyname: | |
4419 | UNI(OP_GNBYNAME); | |
4420 | ||
4421 | case KEY_getnetbyaddr: | |
a0d0e21e | 4422 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4423 | |
4424 | case KEY_getnetent: | |
4425 | FUN0(OP_GNETENT); | |
4426 | ||
4427 | case KEY_getservbyname: | |
a0d0e21e | 4428 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4429 | |
4430 | case KEY_getservbyport: | |
a0d0e21e | 4431 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4432 | |
4433 | case KEY_getservent: | |
4434 | FUN0(OP_GSERVENT); | |
4435 | ||
4436 | case KEY_getsockname: | |
4437 | UNI(OP_GETSOCKNAME); | |
4438 | ||
4439 | case KEY_getsockopt: | |
a0d0e21e | 4440 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4441 | |
4442 | case KEY_getgrent: | |
4443 | FUN0(OP_GGRENT); | |
4444 | ||
4445 | case KEY_getgrnam: | |
ff68c719 | 4446 | UNI(OP_GGRNAM); |
79072805 LW |
4447 | |
4448 | case KEY_getgrgid: | |
ff68c719 | 4449 | UNI(OP_GGRGID); |
79072805 LW |
4450 | |
4451 | case KEY_getlogin: | |
4452 | FUN0(OP_GETLOGIN); | |
4453 | ||
93a17b20 | 4454 | case KEY_glob: |
a0d0e21e LW |
4455 | set_csh(); |
4456 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4457 | |
79072805 LW |
4458 | case KEY_hex: |
4459 | UNI(OP_HEX); | |
4460 | ||
4461 | case KEY_if: | |
57843af0 | 4462 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4463 | OPERATOR(IF); |
4464 | ||
4465 | case KEY_index: | |
a0d0e21e | 4466 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4467 | |
4468 | case KEY_int: | |
4469 | UNI(OP_INT); | |
4470 | ||
4471 | case KEY_ioctl: | |
a0d0e21e | 4472 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4473 | |
4474 | case KEY_join: | |
a0d0e21e | 4475 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4476 | |
4477 | case KEY_keys: | |
4478 | UNI(OP_KEYS); | |
4479 | ||
4480 | case KEY_kill: | |
a0d0e21e | 4481 | LOP(OP_KILL,XTERM); |
79072805 LW |
4482 | |
4483 | case KEY_last: | |
a0d0e21e | 4484 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4485 | LOOPX(OP_LAST); |
4e553d73 | 4486 | |
79072805 LW |
4487 | case KEY_lc: |
4488 | UNI(OP_LC); | |
4489 | ||
4490 | case KEY_lcfirst: | |
4491 | UNI(OP_LCFIRST); | |
4492 | ||
4493 | case KEY_local: | |
09bef843 | 4494 | yylval.ival = 0; |
79072805 LW |
4495 | OPERATOR(LOCAL); |
4496 | ||
4497 | case KEY_length: | |
4498 | UNI(OP_LENGTH); | |
4499 | ||
4500 | case KEY_lt: | |
4501 | Rop(OP_SLT); | |
4502 | ||
4503 | case KEY_le: | |
4504 | Rop(OP_SLE); | |
4505 | ||
4506 | case KEY_localtime: | |
4507 | UNI(OP_LOCALTIME); | |
4508 | ||
4509 | case KEY_log: | |
4510 | UNI(OP_LOG); | |
4511 | ||
4512 | case KEY_link: | |
a0d0e21e | 4513 | LOP(OP_LINK,XTERM); |
79072805 LW |
4514 | |
4515 | case KEY_listen: | |
a0d0e21e | 4516 | LOP(OP_LISTEN,XTERM); |
79072805 | 4517 | |
c0329465 MB |
4518 | case KEY_lock: |
4519 | UNI(OP_LOCK); | |
4520 | ||
79072805 LW |
4521 | case KEY_lstat: |
4522 | UNI(OP_LSTAT); | |
4523 | ||
4524 | case KEY_m: | |
8782bef2 | 4525 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4526 | TERM(sublex_start()); |
4527 | ||
a0d0e21e | 4528 | case KEY_map: |
2c38e13d | 4529 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4530 | |
79072805 | 4531 | case KEY_mkdir: |
a0d0e21e | 4532 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4533 | |
4534 | case KEY_msgctl: | |
a0d0e21e | 4535 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4536 | |
4537 | case KEY_msgget: | |
a0d0e21e | 4538 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4539 | |
4540 | case KEY_msgrcv: | |
a0d0e21e | 4541 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4542 | |
4543 | case KEY_msgsnd: | |
a0d0e21e | 4544 | LOP(OP_MSGSND,XTERM); |
79072805 | 4545 | |
77ca0c92 | 4546 | case KEY_our: |
93a17b20 | 4547 | case KEY_my: |
77ca0c92 | 4548 | PL_in_my = tmp; |
c750a3ec | 4549 | s = skipspace(s); |
7e2040f0 | 4550 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4551 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4552 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4553 | goto really_sub; | |
def3634b | 4554 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4555 | if (!PL_in_my_stash) { |
c750a3ec | 4556 | char tmpbuf[1024]; |
3280af22 NIS |
4557 | PL_bufptr = s; |
4558 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4559 | yyerror(tmpbuf); |
4560 | } | |
4561 | } | |
09bef843 | 4562 | yylval.ival = 1; |
55497cff | 4563 | OPERATOR(MY); |
93a17b20 | 4564 | |
79072805 | 4565 | case KEY_next: |
a0d0e21e | 4566 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4567 | LOOPX(OP_NEXT); |
4568 | ||
4569 | case KEY_ne: | |
4570 | Eop(OP_SNE); | |
4571 | ||
a0d0e21e | 4572 | case KEY_no: |
3280af22 | 4573 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4574 | yyerror("\"no\" not allowed in expression"); |
4575 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4576 | s = force_version(s, FALSE); |
a0d0e21e LW |
4577 | yylval.ival = 0; |
4578 | OPERATOR(USE); | |
4579 | ||
4580 | case KEY_not: | |
2d2e263d LW |
4581 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4582 | FUN1(OP_NOT); | |
4583 | else | |
4584 | OPERATOR(NOTOP); | |
a0d0e21e | 4585 | |
79072805 | 4586 | case KEY_open: |
93a17b20 | 4587 | s = skipspace(s); |
7e2040f0 | 4588 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4589 | char *t; |
7e2040f0 | 4590 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4591 | t = skipspace(d); |
e476b1b5 GS |
4592 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4593 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4594 | "Precedence problem: open %.*s should be open(%.*s)", |
4595 | d-s,s, d-s,s); | |
93a17b20 | 4596 | } |
a0d0e21e | 4597 | LOP(OP_OPEN,XTERM); |
79072805 | 4598 | |
463ee0b2 | 4599 | case KEY_or: |
a0d0e21e | 4600 | yylval.ival = OP_OR; |
463ee0b2 LW |
4601 | OPERATOR(OROP); |
4602 | ||
79072805 LW |
4603 | case KEY_ord: |
4604 | UNI(OP_ORD); | |
4605 | ||
4606 | case KEY_oct: | |
4607 | UNI(OP_OCT); | |
4608 | ||
4609 | case KEY_opendir: | |
a0d0e21e | 4610 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4611 | |
4612 | case KEY_print: | |
3280af22 | 4613 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4614 | LOP(OP_PRINT,XREF); |
79072805 LW |
4615 | |
4616 | case KEY_printf: | |
3280af22 | 4617 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4618 | LOP(OP_PRTF,XREF); |
79072805 | 4619 | |
c07a80fd | 4620 | case KEY_prototype: |
4621 | UNI(OP_PROTOTYPE); | |
4622 | ||
79072805 | 4623 | case KEY_push: |
a0d0e21e | 4624 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4625 | |
4626 | case KEY_pop: | |
4627 | UNI(OP_POP); | |
4628 | ||
a0d0e21e LW |
4629 | case KEY_pos: |
4630 | UNI(OP_POS); | |
4e553d73 | 4631 | |
79072805 | 4632 | case KEY_pack: |
a0d0e21e | 4633 | LOP(OP_PACK,XTERM); |
79072805 LW |
4634 | |
4635 | case KEY_package: | |
a0d0e21e | 4636 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4637 | OPERATOR(PACKAGE); |
4638 | ||
4639 | case KEY_pipe: | |
a0d0e21e | 4640 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4641 | |
4642 | case KEY_q: | |
09bef843 | 4643 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4644 | if (!s) |
85e6fe83 | 4645 | missingterm((char*)0); |
79072805 LW |
4646 | yylval.ival = OP_CONST; |
4647 | TERM(sublex_start()); | |
4648 | ||
a0d0e21e LW |
4649 | case KEY_quotemeta: |
4650 | UNI(OP_QUOTEMETA); | |
4651 | ||
8990e307 | 4652 | case KEY_qw: |
09bef843 | 4653 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4654 | if (!s) |
85e6fe83 | 4655 | missingterm((char*)0); |
8127e0e3 GS |
4656 | force_next(')'); |
4657 | if (SvCUR(PL_lex_stuff)) { | |
4658 | OP *words = Nullop; | |
4659 | int warned = 0; | |
3280af22 | 4660 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4661 | while (len) { |
7948272d | 4662 | SV *sv; |
8127e0e3 GS |
4663 | for (; isSPACE(*d) && len; --len, ++d) ; |
4664 | if (len) { | |
4665 | char *b = d; | |
e476b1b5 | 4666 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4667 | for (; !isSPACE(*d) && len; --len, ++d) { |
4668 | if (*d == ',') { | |
e476b1b5 | 4669 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4670 | "Possible attempt to separate words with commas"); |
4671 | ++warned; | |
4672 | } | |
4673 | else if (*d == '#') { | |
e476b1b5 | 4674 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4675 | "Possible attempt to put comments in qw() list"); |
4676 | ++warned; | |
4677 | } | |
4678 | } | |
4679 | } | |
4680 | else { | |
4681 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4682 | } | |
7948272d NIS |
4683 | sv = newSVpvn(b, d-b); |
4684 | if (DO_UTF8(PL_lex_stuff)) | |
4685 | SvUTF8_on(sv); | |
8127e0e3 | 4686 | words = append_elem(OP_LIST, words, |
7948272d | 4687 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4688 | } |
4689 | } | |
8127e0e3 GS |
4690 | if (words) { |
4691 | PL_nextval[PL_nexttoke].opval = words; | |
4692 | force_next(THING); | |
4693 | } | |
55497cff | 4694 | } |
37fd879b | 4695 | if (PL_lex_stuff) { |
8127e0e3 | 4696 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4697 | PL_lex_stuff = Nullsv; |
4698 | } | |
3280af22 | 4699 | PL_expect = XTERM; |
8127e0e3 | 4700 | TOKEN('('); |
8990e307 | 4701 | |
79072805 | 4702 | case KEY_qq: |
09bef843 | 4703 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4704 | if (!s) |
85e6fe83 | 4705 | missingterm((char*)0); |
a0d0e21e | 4706 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4707 | if (SvIVX(PL_lex_stuff) == '\'') |
4708 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4709 | TERM(sublex_start()); |
4710 | ||
8782bef2 GB |
4711 | case KEY_qr: |
4712 | s = scan_pat(s,OP_QR); | |
4713 | TERM(sublex_start()); | |
4714 | ||
79072805 | 4715 | case KEY_qx: |
09bef843 | 4716 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4717 | if (!s) |
85e6fe83 | 4718 | missingterm((char*)0); |
79072805 LW |
4719 | yylval.ival = OP_BACKTICK; |
4720 | set_csh(); | |
4721 | TERM(sublex_start()); | |
4722 | ||
4723 | case KEY_return: | |
4724 | OLDLOP(OP_RETURN); | |
4725 | ||
4726 | case KEY_require: | |
a7cb1f99 | 4727 | s = skipspace(s); |
e759cc13 RGS |
4728 | if (isDIGIT(*s)) { |
4729 | s = force_version(s, FALSE); | |
a7cb1f99 | 4730 | } |
e759cc13 RGS |
4731 | else if (*s != 'v' || !isDIGIT(s[1]) |
4732 | || (s = force_version(s, TRUE), *s == 'v')) | |
4733 | { | |
a7cb1f99 GS |
4734 | *PL_tokenbuf = '\0'; |
4735 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4736 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4737 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4738 | else if (*s == '<') | |
4739 | yyerror("<> should be quotes"); | |
4740 | } | |
463ee0b2 | 4741 | UNI(OP_REQUIRE); |
79072805 LW |
4742 | |
4743 | case KEY_reset: | |
4744 | UNI(OP_RESET); | |
4745 | ||
4746 | case KEY_redo: | |
a0d0e21e | 4747 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4748 | LOOPX(OP_REDO); |
4749 | ||
4750 | case KEY_rename: | |
a0d0e21e | 4751 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4752 | |
4753 | case KEY_rand: | |
4754 | UNI(OP_RAND); | |
4755 | ||
4756 | case KEY_rmdir: | |
4757 | UNI(OP_RMDIR); | |
4758 | ||
4759 | case KEY_rindex: | |
a0d0e21e | 4760 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4761 | |
4762 | case KEY_read: | |
a0d0e21e | 4763 | LOP(OP_READ,XTERM); |
79072805 LW |
4764 | |
4765 | case KEY_readdir: | |
4766 | UNI(OP_READDIR); | |
4767 | ||
93a17b20 LW |
4768 | case KEY_readline: |
4769 | set_csh(); | |
4770 | UNI(OP_READLINE); | |
4771 | ||
4772 | case KEY_readpipe: | |
4773 | set_csh(); | |
4774 | UNI(OP_BACKTICK); | |
4775 | ||
79072805 LW |
4776 | case KEY_rewinddir: |
4777 | UNI(OP_REWINDDIR); | |
4778 | ||
4779 | case KEY_recv: | |
a0d0e21e | 4780 | LOP(OP_RECV,XTERM); |
79072805 LW |
4781 | |
4782 | case KEY_reverse: | |
a0d0e21e | 4783 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4784 | |
4785 | case KEY_readlink: | |
4786 | UNI(OP_READLINK); | |
4787 | ||
4788 | case KEY_ref: | |
4789 | UNI(OP_REF); | |
4790 | ||
4791 | case KEY_s: | |
4792 | s = scan_subst(s); | |
4793 | if (yylval.opval) | |
4794 | TERM(sublex_start()); | |
4795 | else | |
4796 | TOKEN(1); /* force error */ | |
4797 | ||
a0d0e21e LW |
4798 | case KEY_chomp: |
4799 | UNI(OP_CHOMP); | |
4e553d73 | 4800 | |
79072805 LW |
4801 | case KEY_scalar: |
4802 | UNI(OP_SCALAR); | |
4803 | ||
4804 | case KEY_select: | |
a0d0e21e | 4805 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4806 | |
4807 | case KEY_seek: | |
a0d0e21e | 4808 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4809 | |
4810 | case KEY_semctl: | |
a0d0e21e | 4811 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4812 | |
4813 | case KEY_semget: | |
a0d0e21e | 4814 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4815 | |
4816 | case KEY_semop: | |
a0d0e21e | 4817 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4818 | |
4819 | case KEY_send: | |
a0d0e21e | 4820 | LOP(OP_SEND,XTERM); |
79072805 LW |
4821 | |
4822 | case KEY_setpgrp: | |
a0d0e21e | 4823 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4824 | |
4825 | case KEY_setpriority: | |
a0d0e21e | 4826 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4827 | |
4828 | case KEY_sethostent: | |
ff68c719 | 4829 | UNI(OP_SHOSTENT); |
79072805 LW |
4830 | |
4831 | case KEY_setnetent: | |
ff68c719 | 4832 | UNI(OP_SNETENT); |
79072805 LW |
4833 | |
4834 | case KEY_setservent: | |
ff68c719 | 4835 | UNI(OP_SSERVENT); |
79072805 LW |
4836 | |
4837 | case KEY_setprotoent: | |
ff68c719 | 4838 | UNI(OP_SPROTOENT); |
79072805 LW |
4839 | |
4840 | case KEY_setpwent: | |
4841 | FUN0(OP_SPWENT); | |
4842 | ||
4843 | case KEY_setgrent: | |
4844 | FUN0(OP_SGRENT); | |
4845 | ||
4846 | case KEY_seekdir: | |
a0d0e21e | 4847 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4848 | |
4849 | case KEY_setsockopt: | |
a0d0e21e | 4850 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4851 | |
4852 | case KEY_shift: | |
4853 | UNI(OP_SHIFT); | |
4854 | ||
4855 | case KEY_shmctl: | |
a0d0e21e | 4856 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4857 | |
4858 | case KEY_shmget: | |
a0d0e21e | 4859 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4860 | |
4861 | case KEY_shmread: | |
a0d0e21e | 4862 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4863 | |
4864 | case KEY_shmwrite: | |
a0d0e21e | 4865 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4866 | |
4867 | case KEY_shutdown: | |
a0d0e21e | 4868 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4869 | |
4870 | case KEY_sin: | |
4871 | UNI(OP_SIN); | |
4872 | ||
4873 | case KEY_sleep: | |
4874 | UNI(OP_SLEEP); | |
4875 | ||
4876 | case KEY_socket: | |
a0d0e21e | 4877 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4878 | |
4879 | case KEY_socketpair: | |
a0d0e21e | 4880 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4881 | |
4882 | case KEY_sort: | |
3280af22 | 4883 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4884 | s = skipspace(s); |
4885 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4886 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4887 | PL_expect = XTERM; |
15f0808c | 4888 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4889 | LOP(OP_SORT,XREF); |
79072805 LW |
4890 | |
4891 | case KEY_split: | |
a0d0e21e | 4892 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4893 | |
4894 | case KEY_sprintf: | |
a0d0e21e | 4895 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4896 | |
4897 | case KEY_splice: | |
a0d0e21e | 4898 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4899 | |
4900 | case KEY_sqrt: | |
4901 | UNI(OP_SQRT); | |
4902 | ||
4903 | case KEY_srand: | |
4904 | UNI(OP_SRAND); | |
4905 | ||
4906 | case KEY_stat: | |
4907 | UNI(OP_STAT); | |
4908 | ||
4909 | case KEY_study: | |
79072805 LW |
4910 | UNI(OP_STUDY); |
4911 | ||
4912 | case KEY_substr: | |
a0d0e21e | 4913 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4914 | |
4915 | case KEY_format: | |
4916 | case KEY_sub: | |
93a17b20 | 4917 | really_sub: |
09bef843 | 4918 | { |
3280af22 | 4919 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 4920 | SSize_t tboffset = 0; |
09bef843 | 4921 | expectation attrful; |
d731386a | 4922 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
4923 | int key = tmp; |
4924 | ||
4925 | s = skipspace(s); | |
4926 | ||
7e2040f0 | 4927 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4928 | (*s == ':' && s[1] == ':')) |
4929 | { | |
4930 | PL_expect = XBLOCK; | |
4931 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4932 | /* remember buffer pos'n for later force_word */ |
4933 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4934 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4935 | if (strchr(tmpbuf, ':')) | |
4936 | sv_setpv(PL_subname, tmpbuf); | |
4937 | else { | |
4938 | sv_setsv(PL_subname,PL_curstname); | |
4939 | sv_catpvn(PL_subname,"::",2); | |
4940 | sv_catpvn(PL_subname,tmpbuf,len); | |
4941 | } | |
4942 | s = skipspace(d); | |
4943 | have_name = TRUE; | |
4944 | } | |
463ee0b2 | 4945 | else { |
09bef843 SB |
4946 | if (key == KEY_my) |
4947 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4948 | PL_expect = XTERMBLOCK; | |
4949 | attrful = XATTRTERM; | |
4950 | sv_setpv(PL_subname,"?"); | |
4951 | have_name = FALSE; | |
463ee0b2 | 4952 | } |
4633a7c4 | 4953 | |
09bef843 SB |
4954 | if (key == KEY_format) { |
4955 | if (*s == '=') | |
4956 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4957 | if (have_name) | |
b1b65b59 JH |
4958 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4959 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4960 | OPERATOR(FORMAT); |
4961 | } | |
79072805 | 4962 | |
09bef843 SB |
4963 | /* Look for a prototype */ |
4964 | if (*s == '(') { | |
4965 | char *p; | |
4966 | ||
4967 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 4968 | if (!s) |
09bef843 | 4969 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 4970 | /* strip spaces and check for bad characters */ |
09bef843 SB |
4971 | d = SvPVX(PL_lex_stuff); |
4972 | tmp = 0; | |
d731386a | 4973 | bad_proto = FALSE; |
09bef843 | 4974 | for (p = d; *p; ++p) { |
d37a9538 | 4975 | if (!isSPACE(*p)) { |
09bef843 | 4976 | d[tmp++] = *p; |
d37a9538 ST |
4977 | if (!strchr("$@%*;[]&\\", *p)) |
4978 | bad_proto = TRUE; | |
4979 | } | |
09bef843 SB |
4980 | } |
4981 | d[tmp] = '\0'; | |
420cdfc1 ST |
4982 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
4983 | Perl_warner(aTHX_ WARN_SYNTAX, | |
4984 | "Illegal character in prototype for %s : %s", | |
4985 | SvPVX(PL_subname), d); | |
09bef843 SB |
4986 | SvCUR(PL_lex_stuff) = tmp; |
4987 | have_proto = TRUE; | |
68dc0745 | 4988 | |
09bef843 | 4989 | s = skipspace(s); |
4633a7c4 | 4990 | } |
09bef843 SB |
4991 | else |
4992 | have_proto = FALSE; | |
4993 | ||
4994 | if (*s == ':' && s[1] != ':') | |
4995 | PL_expect = attrful; | |
4996 | ||
4997 | if (have_proto) { | |
b1b65b59 JH |
4998 | PL_nextval[PL_nexttoke].opval = |
4999 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5000 | PL_lex_stuff = Nullsv; |
5001 | force_next(THING); | |
68dc0745 | 5002 | } |
09bef843 SB |
5003 | if (!have_name) { |
5004 | sv_setpv(PL_subname,"__ANON__"); | |
5005 | TOKEN(ANONSUB); | |
4633a7c4 | 5006 | } |
b1b65b59 JH |
5007 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5008 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5009 | if (key == KEY_my) |
5010 | TOKEN(MYSUB); | |
5011 | TOKEN(SUB); | |
4633a7c4 | 5012 | } |
79072805 LW |
5013 | |
5014 | case KEY_system: | |
5015 | set_csh(); | |
a0d0e21e | 5016 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5017 | |
5018 | case KEY_symlink: | |
a0d0e21e | 5019 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5020 | |
5021 | case KEY_syscall: | |
a0d0e21e | 5022 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5023 | |
c07a80fd | 5024 | case KEY_sysopen: |
5025 | LOP(OP_SYSOPEN,XTERM); | |
5026 | ||
137443ea | 5027 | case KEY_sysseek: |
5028 | LOP(OP_SYSSEEK,XTERM); | |
5029 | ||
79072805 | 5030 | case KEY_sysread: |
a0d0e21e | 5031 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5032 | |
5033 | case KEY_syswrite: | |
a0d0e21e | 5034 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5035 | |
5036 | case KEY_tr: | |
5037 | s = scan_trans(s); | |
5038 | TERM(sublex_start()); | |
5039 | ||
5040 | case KEY_tell: | |
5041 | UNI(OP_TELL); | |
5042 | ||
5043 | case KEY_telldir: | |
5044 | UNI(OP_TELLDIR); | |
5045 | ||
463ee0b2 | 5046 | case KEY_tie: |
a0d0e21e | 5047 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5048 | |
c07a80fd | 5049 | case KEY_tied: |
5050 | UNI(OP_TIED); | |
5051 | ||
79072805 LW |
5052 | case KEY_time: |
5053 | FUN0(OP_TIME); | |
5054 | ||
5055 | case KEY_times: | |
5056 | FUN0(OP_TMS); | |
5057 | ||
5058 | case KEY_truncate: | |
a0d0e21e | 5059 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5060 | |
5061 | case KEY_uc: | |
5062 | UNI(OP_UC); | |
5063 | ||
5064 | case KEY_ucfirst: | |
5065 | UNI(OP_UCFIRST); | |
5066 | ||
463ee0b2 LW |
5067 | case KEY_untie: |
5068 | UNI(OP_UNTIE); | |
5069 | ||
79072805 | 5070 | case KEY_until: |
57843af0 | 5071 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5072 | OPERATOR(UNTIL); |
5073 | ||
5074 | case KEY_unless: | |
57843af0 | 5075 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5076 | OPERATOR(UNLESS); |
5077 | ||
5078 | case KEY_unlink: | |
a0d0e21e | 5079 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5080 | |
5081 | case KEY_undef: | |
5082 | UNI(OP_UNDEF); | |
5083 | ||
5084 | case KEY_unpack: | |
a0d0e21e | 5085 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5086 | |
5087 | case KEY_utime: | |
a0d0e21e | 5088 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5089 | |
5090 | case KEY_umask: | |
5091 | UNI(OP_UMASK); | |
5092 | ||
5093 | case KEY_unshift: | |
a0d0e21e LW |
5094 | LOP(OP_UNSHIFT,XTERM); |
5095 | ||
5096 | case KEY_use: | |
3280af22 | 5097 | if (PL_expect != XSTATE) |
a0d0e21e | 5098 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5099 | s = skipspace(s); |
a7cb1f99 | 5100 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5101 | s = force_version(s, TRUE); |
a7cb1f99 | 5102 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5103 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5104 | force_next(WORD); |
5105 | } | |
e759cc13 RGS |
5106 | else if (*s == 'v') { |
5107 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5108 | s = force_version(s, FALSE); | |
5109 | } | |
89bfa8cd | 5110 | } |
5111 | else { | |
5112 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5113 | s = force_version(s, FALSE); |
89bfa8cd | 5114 | } |
a0d0e21e LW |
5115 | yylval.ival = 1; |
5116 | OPERATOR(USE); | |
79072805 LW |
5117 | |
5118 | case KEY_values: | |
5119 | UNI(OP_VALUES); | |
5120 | ||
5121 | case KEY_vec: | |
a0d0e21e | 5122 | LOP(OP_VEC,XTERM); |
79072805 LW |
5123 | |
5124 | case KEY_while: | |
57843af0 | 5125 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5126 | OPERATOR(WHILE); |
5127 | ||
5128 | case KEY_warn: | |
3280af22 | 5129 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5130 | LOP(OP_WARN,XTERM); |
79072805 LW |
5131 | |
5132 | case KEY_wait: | |
5133 | FUN0(OP_WAIT); | |
5134 | ||
5135 | case KEY_waitpid: | |
a0d0e21e | 5136 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5137 | |
5138 | case KEY_wantarray: | |
5139 | FUN0(OP_WANTARRAY); | |
5140 | ||
5141 | case KEY_write: | |
9d116dd7 JH |
5142 | #ifdef EBCDIC |
5143 | { | |
df3728a2 JH |
5144 | char ctl_l[2]; |
5145 | ctl_l[0] = toCTRL('L'); | |
5146 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5147 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5148 | } | |
5149 | #else | |
5150 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5151 | #endif | |
79072805 LW |
5152 | UNI(OP_ENTERWRITE); |
5153 | ||
5154 | case KEY_x: | |
3280af22 | 5155 | if (PL_expect == XOPERATOR) |
79072805 LW |
5156 | Mop(OP_REPEAT); |
5157 | check_uni(); | |
5158 | goto just_a_word; | |
5159 | ||
a0d0e21e LW |
5160 | case KEY_xor: |
5161 | yylval.ival = OP_XOR; | |
5162 | OPERATOR(OROP); | |
5163 | ||
79072805 LW |
5164 | case KEY_y: |
5165 | s = scan_trans(s); | |
5166 | TERM(sublex_start()); | |
5167 | } | |
49dc05e3 | 5168 | }} |
79072805 | 5169 | } |
bf4acbe4 GS |
5170 | #ifdef __SC__ |
5171 | #pragma segment Main | |
5172 | #endif | |
79072805 | 5173 | |
e930465f JH |
5174 | static int |
5175 | S_pending_ident(pTHX) | |
8eceec63 SC |
5176 | { |
5177 | register char *d; | |
5178 | register I32 tmp; | |
5179 | /* pit holds the identifier we read and pending_ident is reset */ | |
5180 | char pit = PL_pending_ident; | |
5181 | PL_pending_ident = 0; | |
5182 | ||
5183 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5184 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5185 | ||
5186 | /* if we're in a my(), we can't allow dynamics here. | |
5187 | $foo'bar has already been turned into $foo::bar, so | |
5188 | just check for colons. | |
5189 | ||
5190 | if it's a legal name, the OP is a PADANY. | |
5191 | */ | |
5192 | if (PL_in_my) { | |
5193 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5194 | if (strchr(PL_tokenbuf,':')) | |
5195 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5196 | "variable %s in \"our\"", | |
5197 | PL_tokenbuf)); | |
5198 | tmp = pad_allocmy(PL_tokenbuf); | |
5199 | } | |
5200 | else { | |
5201 | if (strchr(PL_tokenbuf,':')) | |
5202 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5203 | ||
5204 | yylval.opval = newOP(OP_PADANY, 0); | |
5205 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
5206 | return PRIVATEREF; | |
5207 | } | |
5208 | } | |
5209 | ||
5210 | /* | |
5211 | build the ops for accesses to a my() variable. | |
5212 | ||
5213 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5214 | then used in a comparison. This catches most, but not | |
5215 | all cases. For instance, it catches | |
5216 | sort { my($a); $a <=> $b } | |
5217 | but not | |
5218 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5219 | (although why you'd do that is anyone's guess). | |
5220 | */ | |
5221 | ||
5222 | if (!strchr(PL_tokenbuf,':')) { | |
4d1ff10f | 5223 | #ifdef USE_5005THREADS |
8eceec63 SC |
5224 | /* Check for single character per-thread SVs */ |
5225 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' | |
5226 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
5227 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
5228 | { | |
5229 | yylval.opval = newOP(OP_THREADSV, 0); | |
5230 | yylval.opval->op_targ = tmp; | |
5231 | return PRIVATEREF; | |
5232 | } | |
4d1ff10f | 5233 | #endif /* USE_5005THREADS */ |
8eceec63 SC |
5234 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
5235 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; | |
5236 | /* might be an "our" variable" */ | |
5237 | if (SvFLAGS(namesv) & SVpad_OUR) { | |
5238 | /* build ops for a bareword */ | |
5239 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); | |
5240 | sv_catpvn(sym, "::", 2); | |
5241 | sv_catpv(sym, PL_tokenbuf+1); | |
5242 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5243 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5244 | gv_fetchpv(SvPVX(sym), | |
5245 | (PL_in_eval | |
5246 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5247 | : GV_ADDMULTI |
8eceec63 SC |
5248 | ), |
5249 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5250 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5251 | : SVt_PVHV)); | |
5252 | return WORD; | |
5253 | } | |
5254 | ||
5255 | /* if it's a sort block and they're naming $a or $b */ | |
5256 | if (PL_last_lop_op == OP_SORT && | |
5257 | PL_tokenbuf[0] == '$' && | |
5258 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5259 | && !PL_tokenbuf[2]) | |
5260 | { | |
5261 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5262 | d < PL_bufend && *d != '\n'; | |
5263 | d++) | |
5264 | { | |
5265 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5266 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5267 | PL_tokenbuf); | |
5268 | } | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | yylval.opval = newOP(OP_PADANY, 0); | |
5273 | yylval.opval->op_targ = tmp; | |
5274 | return PRIVATEREF; | |
5275 | } | |
5276 | } | |
5277 | ||
5278 | /* | |
5279 | Whine if they've said @foo in a doublequoted string, | |
5280 | and @foo isn't a variable we can find in the symbol | |
5281 | table. | |
5282 | */ | |
5283 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5284 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5285 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5286 | && ckWARN(WARN_AMBIGUOUS)) | |
5287 | { | |
5288 | /* Downgraded from fatal to warning 20000522 mjd */ | |
5289 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
5290 | "Possible unintended interpolation of %s in string", | |
5291 | PL_tokenbuf); | |
5292 | } | |
5293 | } | |
5294 | ||
5295 | /* build ops for a bareword */ | |
5296 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5297 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5298 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5299 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5300 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5301 | : SVt_PVHV)); | |
5302 | return WORD; | |
5303 | } | |
5304 | ||
79072805 | 5305 | I32 |
864dbfa3 | 5306 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5307 | { |
5308 | switch (*d) { | |
5309 | case '_': | |
5310 | if (d[1] == '_') { | |
a0d0e21e | 5311 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5312 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5313 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5314 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5315 | if (strEQ(d,"__END__")) return KEY___END__; |
5316 | } | |
5317 | break; | |
8990e307 LW |
5318 | case 'A': |
5319 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5320 | break; | |
79072805 | 5321 | case 'a': |
463ee0b2 LW |
5322 | switch (len) { |
5323 | case 3: | |
a0d0e21e LW |
5324 | if (strEQ(d,"and")) return -KEY_and; |
5325 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5326 | break; |
463ee0b2 | 5327 | case 5: |
a0d0e21e LW |
5328 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5329 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5330 | break; |
5331 | case 6: | |
a0d0e21e | 5332 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5333 | break; |
5334 | } | |
79072805 LW |
5335 | break; |
5336 | case 'B': | |
5337 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5338 | break; |
79072805 | 5339 | case 'b': |
a0d0e21e LW |
5340 | if (strEQ(d,"bless")) return -KEY_bless; |
5341 | if (strEQ(d,"bind")) return -KEY_bind; | |
5342 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5343 | break; | |
5344 | case 'C': | |
5345 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5346 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5347 | break; |
5348 | case 'c': | |
5349 | switch (len) { | |
5350 | case 3: | |
a0d0e21e LW |
5351 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5352 | if (strEQ(d,"chr")) return -KEY_chr; | |
5353 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5354 | break; |
5355 | case 4: | |
77bc9082 | 5356 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5357 | break; |
5358 | case 5: | |
a0d0e21e LW |
5359 | if (strEQ(d,"close")) return -KEY_close; |
5360 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5361 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5362 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5363 | if (strEQ(d,"chown")) return -KEY_chown; | |
5364 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5365 | break; |
5366 | case 6: | |
a0d0e21e LW |
5367 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5368 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5369 | break; |
5370 | case 7: | |
a0d0e21e | 5371 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5372 | break; |
5373 | case 8: | |
a0d0e21e LW |
5374 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5375 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5376 | break; |
5377 | } | |
5378 | break; | |
ed6116ce LW |
5379 | case 'D': |
5380 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5381 | break; | |
79072805 LW |
5382 | case 'd': |
5383 | switch (len) { | |
5384 | case 2: | |
5385 | if (strEQ(d,"do")) return KEY_do; | |
5386 | break; | |
5387 | case 3: | |
a0d0e21e | 5388 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5389 | break; |
5390 | case 4: | |
a0d0e21e | 5391 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5392 | break; |
5393 | case 6: | |
5394 | if (strEQ(d,"delete")) return KEY_delete; | |
5395 | break; | |
5396 | case 7: | |
5397 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5398 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5399 | break; |
5400 | case 8: | |
a0d0e21e | 5401 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5402 | break; |
5403 | } | |
5404 | break; | |
5405 | case 'E': | |
79072805 LW |
5406 | if (strEQ(d,"END")) return KEY_END; |
5407 | break; | |
5408 | case 'e': | |
5409 | switch (len) { | |
5410 | case 2: | |
a0d0e21e | 5411 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5412 | break; |
5413 | case 3: | |
a0d0e21e LW |
5414 | if (strEQ(d,"eof")) return -KEY_eof; |
5415 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5416 | break; |
5417 | case 4: | |
5418 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5419 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5420 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5421 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5422 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5423 | break; |
5424 | case 5: | |
5425 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5426 | break; | |
a0d0e21e LW |
5427 | case 6: |
5428 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5429 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5430 | break; |
79072805 | 5431 | case 8: |
a0d0e21e LW |
5432 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5433 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5434 | break; |
5435 | case 9: | |
a0d0e21e | 5436 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5437 | break; |
5438 | case 10: | |
a0d0e21e LW |
5439 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5440 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5441 | break; |
5442 | case 11: | |
a0d0e21e | 5443 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5444 | break; |
a687059c | 5445 | } |
a687059c | 5446 | break; |
79072805 LW |
5447 | case 'f': |
5448 | switch (len) { | |
5449 | case 3: | |
5450 | if (strEQ(d,"for")) return KEY_for; | |
5451 | break; | |
5452 | case 4: | |
a0d0e21e | 5453 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5454 | break; |
5455 | case 5: | |
a0d0e21e LW |
5456 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5457 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5458 | break; |
5459 | case 6: | |
5460 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5461 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5462 | break; |
5463 | case 7: | |
5464 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5465 | break; | |
5466 | case 8: | |
a0d0e21e | 5467 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5468 | break; |
378cc40b | 5469 | } |
a687059c | 5470 | break; |
79072805 | 5471 | case 'g': |
a687059c LW |
5472 | if (strnEQ(d,"get",3)) { |
5473 | d += 3; | |
5474 | if (*d == 'p') { | |
79072805 LW |
5475 | switch (len) { |
5476 | case 7: | |
a0d0e21e LW |
5477 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5478 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5479 | break; |
5480 | case 8: | |
a0d0e21e LW |
5481 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5482 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5483 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5484 | break; |
5485 | case 11: | |
a0d0e21e LW |
5486 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5487 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5488 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5489 | break; |
5490 | case 14: | |
a0d0e21e | 5491 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5492 | break; |
5493 | case 16: | |
a0d0e21e | 5494 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5495 | break; |
5496 | } | |
a687059c LW |
5497 | } |
5498 | else if (*d == 'h') { | |
a0d0e21e LW |
5499 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5500 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5501 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5502 | } |
5503 | else if (*d == 'n') { | |
a0d0e21e LW |
5504 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5505 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5506 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5507 | } |
5508 | else if (*d == 's') { | |
a0d0e21e LW |
5509 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5510 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5511 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5512 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5513 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5514 | } |
5515 | else if (*d == 'g') { | |
a0d0e21e LW |
5516 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5517 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5518 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5519 | } |
5520 | else if (*d == 'l') { | |
a0d0e21e | 5521 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5522 | } |
a0d0e21e | 5523 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5524 | break; |
a687059c | 5525 | } |
79072805 LW |
5526 | switch (len) { |
5527 | case 2: | |
a0d0e21e LW |
5528 | if (strEQ(d,"gt")) return -KEY_gt; |
5529 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5530 | break; |
5531 | case 4: | |
5532 | if (strEQ(d,"grep")) return KEY_grep; | |
5533 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5534 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5535 | break; |
5536 | case 6: | |
a0d0e21e | 5537 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5538 | break; |
378cc40b | 5539 | } |
a687059c | 5540 | break; |
79072805 | 5541 | case 'h': |
a0d0e21e | 5542 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5543 | break; |
7d07dbc2 MB |
5544 | case 'I': |
5545 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5546 | break; | |
79072805 LW |
5547 | case 'i': |
5548 | switch (len) { | |
5549 | case 2: | |
5550 | if (strEQ(d,"if")) return KEY_if; | |
5551 | break; | |
5552 | case 3: | |
a0d0e21e | 5553 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5554 | break; |
5555 | case 5: | |
a0d0e21e LW |
5556 | if (strEQ(d,"index")) return -KEY_index; |
5557 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5558 | break; |
5559 | } | |
a687059c | 5560 | break; |
79072805 | 5561 | case 'j': |
a0d0e21e | 5562 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5563 | break; |
79072805 LW |
5564 | case 'k': |
5565 | if (len == 4) { | |
3a6a8333 | 5566 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5567 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5568 | } |
79072805 | 5569 | break; |
79072805 LW |
5570 | case 'l': |
5571 | switch (len) { | |
5572 | case 2: | |
a0d0e21e LW |
5573 | if (strEQ(d,"lt")) return -KEY_lt; |
5574 | if (strEQ(d,"le")) return -KEY_le; | |
5575 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5576 | break; |
5577 | case 3: | |
a0d0e21e | 5578 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5579 | break; |
5580 | case 4: | |
5581 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5582 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5583 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5584 | break; |
79072805 LW |
5585 | case 5: |
5586 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5587 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5588 | break; |
5589 | case 6: | |
a0d0e21e LW |
5590 | if (strEQ(d,"length")) return -KEY_length; |
5591 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5592 | break; |
5593 | case 7: | |
a0d0e21e | 5594 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5595 | break; |
5596 | case 9: | |
a0d0e21e | 5597 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5598 | break; |
5599 | } | |
a687059c | 5600 | break; |
79072805 LW |
5601 | case 'm': |
5602 | switch (len) { | |
5603 | case 1: return KEY_m; | |
93a17b20 LW |
5604 | case 2: |
5605 | if (strEQ(d,"my")) return KEY_my; | |
5606 | break; | |
a0d0e21e LW |
5607 | case 3: |
5608 | if (strEQ(d,"map")) return KEY_map; | |
5609 | break; | |
79072805 | 5610 | case 5: |
a0d0e21e | 5611 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5612 | break; |
5613 | case 6: | |
a0d0e21e LW |
5614 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5615 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5616 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5617 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5618 | break; |
5619 | } | |
a687059c | 5620 | break; |
79072805 LW |
5621 | case 'n': |
5622 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5623 | if (strEQ(d,"ne")) return -KEY_ne; |
5624 | if (strEQ(d,"not")) return -KEY_not; | |
5625 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5626 | break; |
79072805 LW |
5627 | case 'o': |
5628 | switch (len) { | |
463ee0b2 | 5629 | case 2: |
a0d0e21e | 5630 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5631 | break; |
79072805 | 5632 | case 3: |
a0d0e21e LW |
5633 | if (strEQ(d,"ord")) return -KEY_ord; |
5634 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5635 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5636 | break; |
5637 | case 4: | |
a0d0e21e | 5638 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5639 | break; |
5640 | case 7: | |
a0d0e21e | 5641 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5642 | break; |
fe14fcc3 | 5643 | } |
a687059c | 5644 | break; |
79072805 LW |
5645 | case 'p': |
5646 | switch (len) { | |
5647 | case 3: | |
4e553d73 | 5648 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5649 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5650 | break; |
5651 | case 4: | |
3a6a8333 | 5652 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5653 | if (strEQ(d,"pack")) return -KEY_pack; |
5654 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5655 | break; |
5656 | case 5: | |
5657 | if (strEQ(d,"print")) return KEY_print; | |
5658 | break; | |
5659 | case 6: | |
5660 | if (strEQ(d,"printf")) return KEY_printf; | |
5661 | break; | |
5662 | case 7: | |
5663 | if (strEQ(d,"package")) return KEY_package; | |
5664 | break; | |
c07a80fd | 5665 | case 9: |
5666 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5667 | } |
79072805 LW |
5668 | break; |
5669 | case 'q': | |
5670 | if (len <= 2) { | |
5671 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5672 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5673 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5674 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5675 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5676 | } |
a0d0e21e | 5677 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5678 | break; |
5679 | case 'r': | |
5680 | switch (len) { | |
5681 | case 3: | |
a0d0e21e | 5682 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5683 | break; |
5684 | case 4: | |
a0d0e21e LW |
5685 | if (strEQ(d,"read")) return -KEY_read; |
5686 | if (strEQ(d,"rand")) return -KEY_rand; | |
5687 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5688 | if (strEQ(d,"redo")) return KEY_redo; |
5689 | break; | |
5690 | case 5: | |
a0d0e21e LW |
5691 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5692 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5693 | break; |
5694 | case 6: | |
5695 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5696 | if (strEQ(d,"rename")) return -KEY_rename; |
5697 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5698 | break; |
5699 | case 7: | |
ec4ab249 | 5700 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5701 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5702 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5703 | break; |
5704 | case 8: | |
a0d0e21e LW |
5705 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5706 | if (strEQ(d,"readline")) return -KEY_readline; | |
5707 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5708 | break; |
5709 | case 9: | |
a0d0e21e | 5710 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5711 | break; |
a687059c | 5712 | } |
79072805 LW |
5713 | break; |
5714 | case 's': | |
a687059c | 5715 | switch (d[1]) { |
79072805 | 5716 | case 0: return KEY_s; |
a687059c | 5717 | case 'c': |
79072805 | 5718 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5719 | break; |
5720 | case 'e': | |
79072805 LW |
5721 | switch (len) { |
5722 | case 4: | |
a0d0e21e LW |
5723 | if (strEQ(d,"seek")) return -KEY_seek; |
5724 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5725 | break; |
5726 | case 5: | |
a0d0e21e | 5727 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5728 | break; |
5729 | case 6: | |
a0d0e21e LW |
5730 | if (strEQ(d,"select")) return -KEY_select; |
5731 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5732 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5733 | break; |
5734 | case 7: | |
a0d0e21e LW |
5735 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5736 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5737 | break; |
5738 | case 8: | |
a0d0e21e LW |
5739 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5740 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5741 | break; |
5742 | case 9: | |
a0d0e21e | 5743 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5744 | break; |
5745 | case 10: | |
a0d0e21e LW |
5746 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5747 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5748 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5749 | break; |
5750 | case 11: | |
a0d0e21e LW |
5751 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5752 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5753 | break; |
5754 | } | |
a687059c LW |
5755 | break; |
5756 | case 'h': | |
79072805 LW |
5757 | switch (len) { |
5758 | case 5: | |
3a6a8333 | 5759 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
5760 | break; |
5761 | case 6: | |
a0d0e21e LW |
5762 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5763 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5764 | break; |
5765 | case 7: | |
a0d0e21e | 5766 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5767 | break; |
5768 | case 8: | |
a0d0e21e LW |
5769 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5770 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5771 | break; |
5772 | } | |
a687059c LW |
5773 | break; |
5774 | case 'i': | |
a0d0e21e | 5775 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5776 | break; |
5777 | case 'l': | |
a0d0e21e | 5778 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5779 | break; |
5780 | case 'o': | |
79072805 | 5781 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5782 | if (strEQ(d,"socket")) return -KEY_socket; |
5783 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5784 | break; |
5785 | case 'p': | |
79072805 | 5786 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5787 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 5788 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
5789 | break; |
5790 | case 'q': | |
a0d0e21e | 5791 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5792 | break; |
5793 | case 'r': | |
a0d0e21e | 5794 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5795 | break; |
5796 | case 't': | |
a0d0e21e | 5797 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5798 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5799 | break; |
5800 | case 'u': | |
a0d0e21e | 5801 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5802 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5803 | break; |
5804 | case 'y': | |
79072805 LW |
5805 | switch (len) { |
5806 | case 6: | |
a0d0e21e | 5807 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5808 | break; |
5809 | case 7: | |
a0d0e21e LW |
5810 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5811 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5812 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5813 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5814 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5815 | break; |
5816 | case 8: | |
a0d0e21e | 5817 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5818 | break; |
a687059c | 5819 | } |
a687059c LW |
5820 | break; |
5821 | } | |
5822 | break; | |
79072805 LW |
5823 | case 't': |
5824 | switch (len) { | |
5825 | case 2: | |
5826 | if (strEQ(d,"tr")) return KEY_tr; | |
5827 | break; | |
463ee0b2 LW |
5828 | case 3: |
5829 | if (strEQ(d,"tie")) return KEY_tie; | |
5830 | break; | |
79072805 | 5831 | case 4: |
a0d0e21e | 5832 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5833 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5834 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5835 | break; |
5836 | case 5: | |
a0d0e21e | 5837 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5838 | break; |
5839 | case 7: | |
a0d0e21e | 5840 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5841 | break; |
5842 | case 8: | |
a0d0e21e | 5843 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5844 | break; |
378cc40b | 5845 | } |
a687059c | 5846 | break; |
79072805 LW |
5847 | case 'u': |
5848 | switch (len) { | |
5849 | case 2: | |
a0d0e21e LW |
5850 | if (strEQ(d,"uc")) return -KEY_uc; |
5851 | break; | |
5852 | case 3: | |
5853 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5854 | break; |
5855 | case 5: | |
5856 | if (strEQ(d,"undef")) return KEY_undef; | |
5857 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5858 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5859 | if (strEQ(d,"utime")) return -KEY_utime; |
5860 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5861 | break; |
5862 | case 6: | |
5863 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5864 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5865 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5866 | break; |
5867 | case 7: | |
3a6a8333 | 5868 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 5869 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5870 | break; |
a687059c LW |
5871 | } |
5872 | break; | |
79072805 | 5873 | case 'v': |
a0d0e21e LW |
5874 | if (strEQ(d,"values")) return -KEY_values; |
5875 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5876 | break; |
79072805 LW |
5877 | case 'w': |
5878 | switch (len) { | |
5879 | case 4: | |
a0d0e21e LW |
5880 | if (strEQ(d,"warn")) return -KEY_warn; |
5881 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5882 | break; |
5883 | case 5: | |
5884 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5885 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5886 | break; |
5887 | case 7: | |
a0d0e21e | 5888 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5889 | break; |
5890 | case 9: | |
a0d0e21e | 5891 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5892 | break; |
2f3197b3 | 5893 | } |
a687059c | 5894 | break; |
79072805 | 5895 | case 'x': |
a0d0e21e LW |
5896 | if (len == 1) return -KEY_x; |
5897 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5898 | break; |
79072805 LW |
5899 | case 'y': |
5900 | if (len == 1) return KEY_y; | |
5901 | break; | |
5902 | case 'z': | |
a687059c LW |
5903 | break; |
5904 | } | |
79072805 | 5905 | return 0; |
a687059c LW |
5906 | } |
5907 | ||
76e3520e | 5908 | STATIC void |
cea2e8a9 | 5909 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5910 | { |
2f3197b3 LW |
5911 | char *w; |
5912 | ||
d008e5eb | 5913 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
5914 | if (ckWARN(WARN_SYNTAX)) { |
5915 | int level = 1; | |
5916 | for (w = s+2; *w && level; w++) { | |
5917 | if (*w == '(') | |
5918 | ++level; | |
5919 | else if (*w == ')') | |
5920 | --level; | |
5921 | } | |
5922 | if (*w) | |
5923 | for (; *w && isSPACE(*w); w++) ; | |
5924 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5925 | Perl_warner(aTHX_ WARN_SYNTAX, |
5926 | "%s (...) interpreted as function",name); | |
d008e5eb | 5927 | } |
2f3197b3 | 5928 | } |
3280af22 | 5929 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5930 | s++; |
a687059c LW |
5931 | if (*s == '(') |
5932 | s++; | |
3280af22 | 5933 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5934 | s++; |
7e2040f0 | 5935 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5936 | w = s++; |
7e2040f0 | 5937 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5938 | s++; |
3280af22 | 5939 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5940 | s++; |
e929a76b | 5941 | if (*s == ',') { |
463ee0b2 | 5942 | int kw; |
e929a76b | 5943 | *s = '\0'; |
864dbfa3 | 5944 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5945 | *s = ','; |
463ee0b2 | 5946 | if (kw) |
e929a76b | 5947 | return; |
cea2e8a9 | 5948 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5949 | } |
5950 | } | |
5951 | } | |
5952 | ||
423cee85 JH |
5953 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5954 | Best used as sv=new_constant(..., sv, ...). | |
5955 | If s, pv are NULL, calls subroutine with one argument, | |
5956 | and type is used with error messages only. */ | |
5957 | ||
b3ac6de7 | 5958 | STATIC SV * |
dff6d3cd | 5959 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 5960 | const char *type) |
b3ac6de7 | 5961 | { |
b3ac6de7 | 5962 | dSP; |
3280af22 | 5963 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5964 | SV *res; |
b3ac6de7 IZ |
5965 | SV **cvp; |
5966 | SV *cv, *typesv; | |
f0af216f | 5967 | const char *why1, *why2, *why3; |
4e553d73 | 5968 | |
f0af216f | 5969 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
5970 | SV *msg; |
5971 | ||
f0af216f | 5972 | why2 = strEQ(key,"charnames") |
41ab332f | 5973 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 5974 | : ""; |
4e553d73 | 5975 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
5976 | (type ? type: "undef"), why2); |
5977 | ||
5978 | /* This is convoluted and evil ("goto considered harmful") | |
5979 | * but I do not understand the intricacies of all the different | |
5980 | * failure modes of %^H in here. The goal here is to make | |
5981 | * the most probable error message user-friendly. --jhi */ | |
5982 | ||
5983 | goto msgdone; | |
5984 | ||
423cee85 | 5985 | report: |
4e553d73 | 5986 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 5987 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 5988 | msgdone: |
423cee85 JH |
5989 | yyerror(SvPVX(msg)); |
5990 | SvREFCNT_dec(msg); | |
5991 | return sv; | |
5992 | } | |
b3ac6de7 IZ |
5993 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
5994 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5995 | why1 = "$^H{"; |
5996 | why2 = key; | |
f0af216f | 5997 | why3 = "} is not defined"; |
423cee85 | 5998 | goto report; |
b3ac6de7 IZ |
5999 | } |
6000 | sv_2mortal(sv); /* Parent created it permanently */ | |
6001 | cv = *cvp; | |
423cee85 JH |
6002 | if (!pv && s) |
6003 | pv = sv_2mortal(newSVpvn(s, len)); | |
6004 | if (type && pv) | |
6005 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6006 | else |
423cee85 | 6007 | typesv = &PL_sv_undef; |
4e553d73 | 6008 | |
e788e7d3 | 6009 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6010 | ENTER ; |
6011 | SAVETMPS; | |
4e553d73 | 6012 | |
423cee85 | 6013 | PUSHMARK(SP) ; |
a5845cb7 | 6014 | EXTEND(sp, 3); |
423cee85 JH |
6015 | if (pv) |
6016 | PUSHs(pv); | |
b3ac6de7 | 6017 | PUSHs(sv); |
423cee85 JH |
6018 | if (pv) |
6019 | PUSHs(typesv); | |
b3ac6de7 | 6020 | PUTBACK; |
423cee85 | 6021 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6022 | |
423cee85 | 6023 | SPAGAIN ; |
4e553d73 | 6024 | |
423cee85 | 6025 | /* Check the eval first */ |
9b0e499b | 6026 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6027 | STRLEN n_a; |
6028 | sv_catpv(ERRSV, "Propagated"); | |
6029 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6030 | (void)POPs; |
423cee85 JH |
6031 | res = SvREFCNT_inc(sv); |
6032 | } | |
6033 | else { | |
6034 | res = POPs; | |
e1f15930 | 6035 | (void)SvREFCNT_inc(res); |
423cee85 | 6036 | } |
4e553d73 | 6037 | |
423cee85 JH |
6038 | PUTBACK ; |
6039 | FREETMPS ; | |
6040 | LEAVE ; | |
b3ac6de7 | 6041 | POPSTACK; |
4e553d73 | 6042 | |
b3ac6de7 | 6043 | if (!SvOK(res)) { |
423cee85 JH |
6044 | why1 = "Call to &{$^H{"; |
6045 | why2 = key; | |
f0af216f | 6046 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6047 | sv = res; |
6048 | goto report; | |
9b0e499b | 6049 | } |
423cee85 | 6050 | |
9b0e499b | 6051 | return res; |
b3ac6de7 | 6052 | } |
4e553d73 | 6053 | |
76e3520e | 6054 | STATIC char * |
cea2e8a9 | 6055 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6056 | { |
6057 | register char *d = dest; | |
8903cb82 | 6058 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6059 | for (;;) { |
8903cb82 | 6060 | if (d >= e) |
cea2e8a9 | 6061 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6062 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6063 | *d++ = *s++; |
7e2040f0 | 6064 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6065 | *d++ = ':'; |
6066 | *d++ = ':'; | |
6067 | s++; | |
6068 | } | |
c3e0f903 | 6069 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6070 | *d++ = *s++; |
6071 | *d++ = *s++; | |
6072 | } | |
fd400ab9 | 6073 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6074 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6075 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6076 | t += UTF8SKIP(t); |
6077 | if (d + (t - s) > e) | |
cea2e8a9 | 6078 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6079 | Copy(s, d, t - s, char); |
6080 | d += t - s; | |
6081 | s = t; | |
6082 | } | |
463ee0b2 LW |
6083 | else { |
6084 | *d = '\0'; | |
6085 | *slp = d - dest; | |
6086 | return s; | |
e929a76b | 6087 | } |
378cc40b LW |
6088 | } |
6089 | } | |
6090 | ||
76e3520e | 6091 | STATIC char * |
cea2e8a9 | 6092 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6093 | { |
6094 | register char *d; | |
8903cb82 | 6095 | register char *e; |
79072805 | 6096 | char *bracket = 0; |
748a9306 | 6097 | char funny = *s++; |
378cc40b | 6098 | |
a0d0e21e LW |
6099 | if (isSPACE(*s)) |
6100 | s = skipspace(s); | |
378cc40b | 6101 | d = dest; |
8903cb82 | 6102 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6103 | if (isDIGIT(*s)) { |
8903cb82 | 6104 | while (isDIGIT(*s)) { |
6105 | if (d >= e) | |
cea2e8a9 | 6106 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6107 | *d++ = *s++; |
8903cb82 | 6108 | } |
378cc40b LW |
6109 | } |
6110 | else { | |
463ee0b2 | 6111 | for (;;) { |
8903cb82 | 6112 | if (d >= e) |
cea2e8a9 | 6113 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6114 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6115 | *d++ = *s++; |
7e2040f0 | 6116 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6117 | *d++ = ':'; |
6118 | *d++ = ':'; | |
6119 | s++; | |
6120 | } | |
a0d0e21e | 6121 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6122 | *d++ = *s++; |
6123 | *d++ = *s++; | |
6124 | } | |
fd400ab9 | 6125 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6126 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6127 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6128 | t += UTF8SKIP(t); |
6129 | if (d + (t - s) > e) | |
cea2e8a9 | 6130 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6131 | Copy(s, d, t - s, char); |
6132 | d += t - s; | |
6133 | s = t; | |
6134 | } | |
463ee0b2 LW |
6135 | else |
6136 | break; | |
6137 | } | |
378cc40b LW |
6138 | } |
6139 | *d = '\0'; | |
6140 | d = dest; | |
79072805 | 6141 | if (*d) { |
3280af22 NIS |
6142 | if (PL_lex_state != LEX_NORMAL) |
6143 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6144 | return s; |
378cc40b | 6145 | } |
748a9306 | 6146 | if (*s == '$' && s[1] && |
7e2040f0 | 6147 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6148 | { |
4810e5ec | 6149 | return s; |
5cd24f17 | 6150 | } |
79072805 LW |
6151 | if (*s == '{') { |
6152 | bracket = s; | |
6153 | s++; | |
6154 | } | |
6155 | else if (ck_uni) | |
6156 | check_uni(); | |
93a17b20 | 6157 | if (s < send) |
79072805 LW |
6158 | *d = *s++; |
6159 | d[1] = '\0'; | |
2b92dfce | 6160 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6161 | *d = toCTRL(*s); |
6162 | s++; | |
de3bb511 | 6163 | } |
79072805 | 6164 | if (bracket) { |
748a9306 | 6165 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6166 | while (s < send) { |
6167 | char ch = *s++; | |
bf4acbe4 | 6168 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6169 | *d = ch; |
6170 | break; | |
6171 | } | |
6172 | } | |
748a9306 | 6173 | } |
7e2040f0 | 6174 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6175 | d++; |
a0ed51b3 LW |
6176 | if (UTF) { |
6177 | e = s; | |
155aba94 | 6178 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6179 | e += UTF8SKIP(e); |
fd400ab9 | 6180 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6181 | e += UTF8SKIP(e); |
6182 | } | |
6183 | Copy(s, d, e - s, char); | |
6184 | d += e - s; | |
6185 | s = e; | |
6186 | } | |
6187 | else { | |
2b92dfce | 6188 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6189 | *d++ = *s++; |
2b92dfce | 6190 | if (d >= e) |
cea2e8a9 | 6191 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6192 | } |
79072805 | 6193 | *d = '\0'; |
bf4acbe4 | 6194 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6195 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6196 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6197 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 6198 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 6199 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6200 | funny, dest, brack, funny, dest, brack); |
6201 | } | |
79072805 | 6202 | bracket++; |
a0be28da | 6203 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6204 | return s; |
6205 | } | |
4e553d73 NIS |
6206 | } |
6207 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6208 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6209 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6210 | && isALNUM(*s)) | |
6211 | { | |
6212 | d++; | |
6213 | while (isALNUM(*s) && d < e) { | |
6214 | *d++ = *s++; | |
6215 | } | |
6216 | if (d >= e) | |
cea2e8a9 | 6217 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6218 | *d = '\0'; |
79072805 LW |
6219 | } |
6220 | if (*s == '}') { | |
6221 | s++; | |
3280af22 NIS |
6222 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
6223 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
6224 | if (funny == '#') |
6225 | funny = '@'; | |
d008e5eb | 6226 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6227 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6228 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6229 | { |
cea2e8a9 | 6230 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
6231 | "Ambiguous use of %c{%s} resolved to %c%s", |
6232 | funny, dest, funny, dest); | |
6233 | } | |
6234 | } | |
79072805 LW |
6235 | } |
6236 | else { | |
6237 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6238 | *dest = '\0'; |
79072805 LW |
6239 | } |
6240 | } | |
3280af22 NIS |
6241 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6242 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6243 | return s; |
6244 | } | |
6245 | ||
cea2e8a9 GS |
6246 | void |
6247 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 6248 | { |
bbce6d69 | 6249 | if (ch == 'i') |
a0d0e21e | 6250 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6251 | else if (ch == 'g') |
6252 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6253 | else if (ch == 'c') |
6254 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6255 | else if (ch == 'o') |
6256 | *pmfl |= PMf_KEEP; | |
6257 | else if (ch == 'm') | |
6258 | *pmfl |= PMf_MULTILINE; | |
6259 | else if (ch == 's') | |
6260 | *pmfl |= PMf_SINGLELINE; | |
6261 | else if (ch == 'x') | |
6262 | *pmfl |= PMf_EXTENDED; | |
6263 | } | |
378cc40b | 6264 | |
76e3520e | 6265 | STATIC char * |
cea2e8a9 | 6266 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6267 | { |
79072805 LW |
6268 | PMOP *pm; |
6269 | char *s; | |
378cc40b | 6270 | |
09bef843 | 6271 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6272 | if (!s) |
cea2e8a9 | 6273 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6274 | |
8782bef2 | 6275 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6276 | if (PL_multi_open == '?') |
79072805 | 6277 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6278 | if(type == OP_QR) { |
6279 | while (*s && strchr("iomsx", *s)) | |
6280 | pmflag(&pm->op_pmflags,*s++); | |
6281 | } | |
6282 | else { | |
6283 | while (*s && strchr("iogcmsx", *s)) | |
6284 | pmflag(&pm->op_pmflags,*s++); | |
6285 | } | |
4633a7c4 | 6286 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6287 | |
3280af22 | 6288 | PL_lex_op = (OP*)pm; |
79072805 | 6289 | yylval.ival = OP_MATCH; |
378cc40b LW |
6290 | return s; |
6291 | } | |
6292 | ||
76e3520e | 6293 | STATIC char * |
cea2e8a9 | 6294 | S_scan_subst(pTHX_ char *start) |
79072805 | 6295 | { |
a0d0e21e | 6296 | register char *s; |
79072805 | 6297 | register PMOP *pm; |
4fdae800 | 6298 | I32 first_start; |
79072805 LW |
6299 | I32 es = 0; |
6300 | ||
79072805 LW |
6301 | yylval.ival = OP_NULL; |
6302 | ||
09bef843 | 6303 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6304 | |
37fd879b | 6305 | if (!s) |
cea2e8a9 | 6306 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6307 | |
3280af22 | 6308 | if (s[-1] == PL_multi_open) |
79072805 LW |
6309 | s--; |
6310 | ||
3280af22 | 6311 | first_start = PL_multi_start; |
09bef843 | 6312 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6313 | if (!s) { |
37fd879b | 6314 | if (PL_lex_stuff) { |
3280af22 | 6315 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6316 | PL_lex_stuff = Nullsv; |
6317 | } | |
cea2e8a9 | 6318 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6319 | } |
3280af22 | 6320 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6321 | |
79072805 | 6322 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6323 | while (*s) { |
a687059c LW |
6324 | if (*s == 'e') { |
6325 | s++; | |
2f3197b3 | 6326 | es++; |
a687059c | 6327 | } |
b3eb6a9b | 6328 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6329 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6330 | else |
6331 | break; | |
378cc40b | 6332 | } |
79072805 LW |
6333 | |
6334 | if (es) { | |
6335 | SV *repl; | |
0244c3a4 GS |
6336 | PL_sublex_info.super_bufptr = s; |
6337 | PL_sublex_info.super_bufend = PL_bufend; | |
6338 | PL_multi_end = 0; | |
79072805 | 6339 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6340 | repl = newSVpvn("",0); |
463ee0b2 | 6341 | while (es-- > 0) |
a0d0e21e | 6342 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6343 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6344 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6345 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6346 | SvEVALED_on(repl); |
3280af22 NIS |
6347 | SvREFCNT_dec(PL_lex_repl); |
6348 | PL_lex_repl = repl; | |
378cc40b | 6349 | } |
79072805 | 6350 | |
4633a7c4 | 6351 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6352 | PL_lex_op = (OP*)pm; |
79072805 | 6353 | yylval.ival = OP_SUBST; |
378cc40b LW |
6354 | return s; |
6355 | } | |
6356 | ||
76e3520e | 6357 | STATIC char * |
cea2e8a9 | 6358 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6359 | { |
a0d0e21e | 6360 | register char* s; |
11343788 | 6361 | OP *o; |
79072805 LW |
6362 | short *tbl; |
6363 | I32 squash; | |
a0ed51b3 | 6364 | I32 del; |
79072805 LW |
6365 | I32 complement; |
6366 | ||
6367 | yylval.ival = OP_NULL; | |
6368 | ||
09bef843 | 6369 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6370 | if (!s) |
cea2e8a9 | 6371 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6372 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6373 | s--; |
6374 | ||
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_ "Transliteration replacement not terminated"); |
a687059c | 6382 | } |
79072805 | 6383 | |
a0ed51b3 | 6384 | complement = del = squash = 0; |
6940069f | 6385 | while (strchr("cds", *s)) { |
395c3793 | 6386 | if (*s == 'c') |
79072805 | 6387 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6388 | else if (*s == 'd') |
a0ed51b3 LW |
6389 | del = OPpTRANS_DELETE; |
6390 | else if (*s == 's') | |
79072805 | 6391 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6392 | s++; |
6393 | } | |
8973db79 JH |
6394 | |
6395 | New(803, tbl, complement&&!del?258:256, short); | |
6396 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
7948272d NIS |
6397 | o->op_private = del|squash|complement| |
6398 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| | |
6399 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6400 | |
3280af22 | 6401 | PL_lex_op = o; |
79072805 LW |
6402 | yylval.ival = OP_TRANS; |
6403 | return s; | |
6404 | } | |
6405 | ||
76e3520e | 6406 | STATIC char * |
cea2e8a9 | 6407 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6408 | { |
6409 | SV *herewas; | |
6410 | I32 op_type = OP_SCALAR; | |
6411 | I32 len; | |
6412 | SV *tmpstr; | |
6413 | char term; | |
6414 | register char *d; | |
fc36a67e | 6415 | register char *e; |
4633a7c4 | 6416 | char *peek; |
3280af22 | 6417 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6418 | |
6419 | s += 2; | |
3280af22 NIS |
6420 | d = PL_tokenbuf; |
6421 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6422 | if (!outer) |
79072805 | 6423 | *d++ = '\n'; |
bf4acbe4 | 6424 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6425 | if (*peek && strchr("`'\"",*peek)) { |
6426 | s = peek; | |
79072805 | 6427 | term = *s++; |
3280af22 | 6428 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6429 | d += len; |
3280af22 | 6430 | if (s < PL_bufend) |
79072805 | 6431 | s++; |
79072805 LW |
6432 | } |
6433 | else { | |
6434 | if (*s == '\\') | |
6435 | s++, term = '\''; | |
6436 | else | |
6437 | term = '"'; | |
7e2040f0 | 6438 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6439 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6440 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6441 | if (d < e) |
6442 | *d++ = *s; | |
6443 | } | |
6444 | } | |
3280af22 | 6445 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6446 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6447 | *d++ = '\n'; |
6448 | *d = '\0'; | |
3280af22 | 6449 | len = d - PL_tokenbuf; |
6a27c188 | 6450 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6451 | d = strchr(s, '\r'); |
6452 | if (d) { | |
6453 | char *olds = s; | |
6454 | s = d; | |
3280af22 | 6455 | while (s < PL_bufend) { |
f63a84b2 LW |
6456 | if (*s == '\r') { |
6457 | *d++ = '\n'; | |
6458 | if (*++s == '\n') | |
6459 | s++; | |
6460 | } | |
6461 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6462 | *d++ = *s++; | |
6463 | s++; | |
6464 | } | |
6465 | else | |
6466 | *d++ = *s++; | |
6467 | } | |
6468 | *d = '\0'; | |
3280af22 NIS |
6469 | PL_bufend = d; |
6470 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6471 | s = olds; |
6472 | } | |
6473 | #endif | |
79072805 | 6474 | d = "\n"; |
3280af22 | 6475 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6476 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6477 | else |
79cb57f6 | 6478 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6479 | s += SvCUR(herewas); |
748a9306 | 6480 | |
8d6dde3e | 6481 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6482 | sv_upgrade(tmpstr, SVt_PVIV); |
6483 | if (term == '\'') { | |
79072805 | 6484 | op_type = OP_CONST; |
748a9306 LW |
6485 | SvIVX(tmpstr) = -1; |
6486 | } | |
6487 | else if (term == '`') { | |
79072805 | 6488 | op_type = OP_BACKTICK; |
748a9306 LW |
6489 | SvIVX(tmpstr) = '\\'; |
6490 | } | |
79072805 LW |
6491 | |
6492 | CLINE; | |
57843af0 | 6493 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6494 | PL_multi_open = PL_multi_close = '<'; |
6495 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6496 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6497 | char *bufptr = PL_sublex_info.super_bufptr; | |
6498 | char *bufend = PL_sublex_info.super_bufend; | |
6499 | char *olds = s - SvCUR(herewas); | |
6500 | s = strchr(bufptr, '\n'); | |
6501 | if (!s) | |
6502 | s = bufend; | |
6503 | d = s; | |
6504 | while (s < bufend && | |
6505 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6506 | if (*s++ == '\n') | |
57843af0 | 6507 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6508 | } |
6509 | if (s >= bufend) { | |
57843af0 | 6510 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6511 | missingterm(PL_tokenbuf); |
6512 | } | |
6513 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6514 | sv_setpvn(tmpstr,d+1,s-d); | |
6515 | s += len - 1; | |
6516 | sv_catpvn(herewas,s,bufend-s); | |
6517 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6518 | ||
6519 | s = olds; | |
6520 | goto retval; | |
6521 | } | |
6522 | else if (!outer) { | |
79072805 | 6523 | d = s; |
3280af22 NIS |
6524 | while (s < PL_bufend && |
6525 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6526 | if (*s++ == '\n') |
57843af0 | 6527 | CopLINE_inc(PL_curcop); |
79072805 | 6528 | } |
3280af22 | 6529 | if (s >= PL_bufend) { |
57843af0 | 6530 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6531 | missingterm(PL_tokenbuf); |
79072805 LW |
6532 | } |
6533 | sv_setpvn(tmpstr,d+1,s-d); | |
6534 | s += len - 1; | |
57843af0 | 6535 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6536 | |
3280af22 NIS |
6537 | sv_catpvn(herewas,s,PL_bufend-s); |
6538 | sv_setsv(PL_linestr,herewas); | |
6539 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6540 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6541 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6542 | } |
6543 | else | |
6544 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6545 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6546 | if (!outer || |
3280af22 | 6547 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6548 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6549 | missingterm(PL_tokenbuf); |
79072805 | 6550 | } |
57843af0 | 6551 | CopLINE_inc(PL_curcop); |
3280af22 | 6552 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6553 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6554 | #ifndef PERL_STRICT_CR |
3280af22 | 6555 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6556 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6557 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6558 | { |
3280af22 NIS |
6559 | PL_bufend[-2] = '\n'; |
6560 | PL_bufend--; | |
6561 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6562 | } |
3280af22 NIS |
6563 | else if (PL_bufend[-1] == '\r') |
6564 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6565 | } |
3280af22 NIS |
6566 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6567 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6568 | #endif |
3280af22 | 6569 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6570 | SV *sv = NEWSV(88,0); |
6571 | ||
93a17b20 | 6572 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6573 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6574 | (void)SvIOK_on(sv); |
6575 | SvIVX(sv) = 0; | |
57843af0 | 6576 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6577 | } |
3280af22 NIS |
6578 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6579 | s = PL_bufend - 1; | |
79072805 | 6580 | *s = ' '; |
3280af22 NIS |
6581 | sv_catsv(PL_linestr,herewas); |
6582 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6583 | } |
6584 | else { | |
3280af22 NIS |
6585 | s = PL_bufend; |
6586 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6587 | } |
6588 | } | |
79072805 | 6589 | s++; |
0244c3a4 | 6590 | retval: |
57843af0 | 6591 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6592 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6593 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6594 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6595 | } |
8990e307 | 6596 | SvREFCNT_dec(herewas); |
0064a8a9 | 6597 | if (UTF && !IN_BYTES && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) |
7948272d | 6598 | SvUTF8_on(tmpstr); |
3280af22 | 6599 | PL_lex_stuff = tmpstr; |
79072805 LW |
6600 | yylval.ival = op_type; |
6601 | return s; | |
6602 | } | |
6603 | ||
02aa26ce NT |
6604 | /* scan_inputsymbol |
6605 | takes: current position in input buffer | |
6606 | returns: new position in input buffer | |
6607 | side-effects: yylval and lex_op are set. | |
6608 | ||
6609 | This code handles: | |
6610 | ||
6611 | <> read from ARGV | |
6612 | <FH> read from filehandle | |
6613 | <pkg::FH> read from package qualified filehandle | |
6614 | <pkg'FH> read from package qualified filehandle | |
6615 | <$fh> read from filehandle in $fh | |
6616 | <*.h> filename glob | |
6617 | ||
6618 | */ | |
6619 | ||
76e3520e | 6620 | STATIC char * |
cea2e8a9 | 6621 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6622 | { |
02aa26ce | 6623 | register char *s = start; /* current position in buffer */ |
79072805 | 6624 | register char *d; |
fc36a67e | 6625 | register char *e; |
1b420867 | 6626 | char *end; |
79072805 LW |
6627 | I32 len; |
6628 | ||
3280af22 NIS |
6629 | d = PL_tokenbuf; /* start of temp holding space */ |
6630 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6631 | end = strchr(s, '\n'); |
6632 | if (!end) | |
6633 | end = PL_bufend; | |
6634 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6635 | |
6636 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6637 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6638 | */ |
6639 | ||
3280af22 | 6640 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6641 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6642 | if (s >= end) |
cea2e8a9 | 6643 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6644 | |
fc36a67e | 6645 | s++; |
02aa26ce NT |
6646 | |
6647 | /* check for <$fh> | |
6648 | Remember, only scalar variables are interpreted as filehandles by | |
6649 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6650 | treated as a glob() call. | |
6651 | This code makes use of the fact that except for the $ at the front, | |
6652 | a scalar variable and a filehandle look the same. | |
6653 | */ | |
4633a7c4 | 6654 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6655 | |
6656 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6657 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6658 | d++; |
02aa26ce NT |
6659 | |
6660 | /* If we've tried to read what we allow filehandles to look like, and | |
6661 | there's still text left, then it must be a glob() and not a getline. | |
6662 | Use scan_str to pull out the stuff between the <> and treat it | |
6663 | as nothing more than a string. | |
6664 | */ | |
6665 | ||
3280af22 | 6666 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6667 | yylval.ival = OP_GLOB; |
6668 | set_csh(); | |
09bef843 | 6669 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6670 | if (!s) |
cea2e8a9 | 6671 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6672 | return s; |
6673 | } | |
395c3793 | 6674 | else { |
9b3023bc RGS |
6675 | bool readline_overriden = FALSE; |
6676 | GV *gv_readline = Nullgv; | |
6677 | GV **gvp; | |
02aa26ce | 6678 | /* we're in a filehandle read situation */ |
3280af22 | 6679 | d = PL_tokenbuf; |
02aa26ce NT |
6680 | |
6681 | /* turn <> into <ARGV> */ | |
79072805 LW |
6682 | if (!len) |
6683 | (void)strcpy(d,"ARGV"); | |
02aa26ce | 6684 | |
9b3023bc | 6685 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6686 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6687 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6688 | || |
ba979b31 | 6689 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6690 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6691 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
6692 | readline_overriden = TRUE; |
6693 | ||
02aa26ce NT |
6694 | /* if <$fh>, create the ops to turn the variable into a |
6695 | filehandle | |
6696 | */ | |
79072805 | 6697 | if (*d == '$') { |
a0d0e21e | 6698 | I32 tmp; |
02aa26ce NT |
6699 | |
6700 | /* try to find it in the pad for this block, otherwise find | |
6701 | add symbol table ops | |
6702 | */ | |
11343788 | 6703 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
f558d5af JH |
6704 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
6705 | if (SvFLAGS(namesv) & SVpad_OUR) { | |
6706 | SV *sym = sv_2mortal(newSVpv(HvNAME(GvSTASH(namesv)),0)); | |
6707 | sv_catpvn(sym, "::", 2); | |
6708 | sv_catpv(sym, d+1); | |
6709 | d = SvPVX(sym); | |
6710 | goto intro_sym; | |
6711 | } | |
6712 | else { | |
6713 | OP *o = newOP(OP_PADSV, 0); | |
6714 | o->op_targ = tmp; | |
9b3023bc RGS |
6715 | PL_lex_op = readline_overriden |
6716 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6717 | append_elem(OP_LIST, o, | |
6718 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
6719 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 6720 | } |
a0d0e21e LW |
6721 | } |
6722 | else { | |
f558d5af JH |
6723 | GV *gv; |
6724 | ++d; | |
6725 | intro_sym: | |
6726 | gv = gv_fetchpv(d, | |
6727 | (PL_in_eval | |
6728 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 6729 | : GV_ADDMULTI), |
f558d5af | 6730 | SVt_PV); |
9b3023bc RGS |
6731 | PL_lex_op = readline_overriden |
6732 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6733 | append_elem(OP_LIST, | |
6734 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
6735 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6736 | : (OP*)newUNOP(OP_READLINE, 0, | |
6737 | newUNOP(OP_RV2SV, 0, | |
6738 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 6739 | } |
f5284f61 IZ |
6740 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6741 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6742 | yylval.ival = OP_NULL; |
6743 | } | |
02aa26ce NT |
6744 | |
6745 | /* If it's none of the above, it must be a literal filehandle | |
6746 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6747 | else { |
85e6fe83 | 6748 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
6749 | PL_lex_op = readline_overriden |
6750 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6751 | append_elem(OP_LIST, | |
6752 | newGVOP(OP_GV, 0, gv), | |
6753 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
6754 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
6755 | yylval.ival = OP_NULL; |
6756 | } | |
6757 | } | |
02aa26ce | 6758 | |
79072805 LW |
6759 | return s; |
6760 | } | |
6761 | ||
02aa26ce NT |
6762 | |
6763 | /* scan_str | |
6764 | takes: start position in buffer | |
09bef843 SB |
6765 | keep_quoted preserve \ on the embedded delimiter(s) |
6766 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6767 | returns: position to continue reading from buffer |
6768 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6769 | updates the read buffer. | |
6770 | ||
6771 | This subroutine pulls a string out of the input. It is called for: | |
6772 | q single quotes q(literal text) | |
6773 | ' single quotes 'literal text' | |
6774 | qq double quotes qq(interpolate $here please) | |
6775 | " double quotes "interpolate $here please" | |
6776 | qx backticks qx(/bin/ls -l) | |
6777 | ` backticks `/bin/ls -l` | |
6778 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6779 | m// regexp match m/this/ | |
6780 | s/// regexp substitute s/this/that/ | |
6781 | tr/// string transliterate tr/this/that/ | |
6782 | y/// string transliterate y/this/that/ | |
6783 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6784 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6785 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6786 | ||
6787 | In most of these cases (all but <>, patterns and transliterate) | |
6788 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6789 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6790 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6791 | calls scan_str(). | |
4e553d73 | 6792 | |
02aa26ce NT |
6793 | It skips whitespace before the string starts, and treats the first |
6794 | character as the delimiter. If the delimiter is one of ([{< then | |
6795 | the corresponding "close" character )]}> is used as the closing | |
6796 | delimiter. It allows quoting of delimiters, and if the string has | |
6797 | balanced delimiters ([{<>}]) it allows nesting. | |
6798 | ||
37fd879b HS |
6799 | On success, the SV with the resulting string is put into lex_stuff or, |
6800 | if that is already non-NULL, into lex_repl. The second case occurs only | |
6801 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
6802 | For convenience, the terminating delimiter character is stuffed into | |
6803 | SvIVX of the SV. | |
02aa26ce NT |
6804 | */ |
6805 | ||
76e3520e | 6806 | STATIC char * |
09bef843 | 6807 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6808 | { |
02aa26ce NT |
6809 | SV *sv; /* scalar value: string */ |
6810 | char *tmps; /* temp string, used for delimiter matching */ | |
6811 | register char *s = start; /* current position in the buffer */ | |
6812 | register char term; /* terminating character */ | |
6813 | register char *to; /* current position in the sv's data */ | |
6814 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 6815 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6816 | |
6817 | /* skip space before the delimiter */ | |
fb73857a | 6818 | if (isSPACE(*s)) |
6819 | s = skipspace(s); | |
02aa26ce NT |
6820 | |
6821 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6822 | CLINE; |
02aa26ce NT |
6823 | |
6824 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6825 | term = *s; |
63cd0674 | 6826 | if (!UTF8_IS_INVARIANT((U8)term) && UTF) |
89491803 | 6827 | has_utf8 = TRUE; |
b1c7b182 | 6828 | |
02aa26ce | 6829 | /* mark where we are */ |
57843af0 | 6830 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6831 | PL_multi_open = term; |
02aa26ce NT |
6832 | |
6833 | /* find corresponding closing delimiter */ | |
93a17b20 | 6834 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6835 | term = tmps[5]; |
3280af22 | 6836 | PL_multi_close = term; |
79072805 | 6837 | |
02aa26ce | 6838 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6839 | assuming. 79 is the SV's initial length. What a random number. */ |
6840 | sv = NEWSV(87,79); | |
ed6116ce LW |
6841 | sv_upgrade(sv, SVt_PVIV); |
6842 | SvIVX(sv) = term; | |
a0d0e21e | 6843 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6844 | |
6845 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6846 | if (keep_delims) |
6847 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6848 | s++; |
6849 | for (;;) { | |
02aa26ce | 6850 | /* extend sv if need be */ |
3280af22 | 6851 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6852 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6853 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6854 | |
02aa26ce | 6855 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6856 | if (PL_multi_open == PL_multi_close) { |
6857 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6858 | /* embedded newlines increment the current line number */ |
3280af22 | 6859 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6860 | CopLINE_inc(PL_curcop); |
02aa26ce | 6861 | /* handle quoted delimiters */ |
3280af22 | 6862 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6863 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6864 | s++; |
02aa26ce | 6865 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6866 | else |
6867 | *to++ = *s++; | |
6868 | } | |
02aa26ce NT |
6869 | /* terminate when run out of buffer (the for() condition), or |
6870 | have found the terminator */ | |
93a17b20 LW |
6871 | else if (*s == term) |
6872 | break; | |
63cd0674 | 6873 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 6874 | has_utf8 = TRUE; |
93a17b20 LW |
6875 | *to = *s; |
6876 | } | |
6877 | } | |
02aa26ce NT |
6878 | |
6879 | /* if the terminator isn't the same as the start character (e.g., | |
6880 | matched brackets), we have to allow more in the quoting, and | |
6881 | be prepared for nested brackets. | |
6882 | */ | |
93a17b20 | 6883 | else { |
02aa26ce | 6884 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6885 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6886 | /* embedded newlines increment the line count */ |
3280af22 | 6887 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6888 | CopLINE_inc(PL_curcop); |
02aa26ce | 6889 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6890 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6891 | if (!keep_quoted && |
6892 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6893 | s++; |
6894 | else | |
6895 | *to++ = *s++; | |
6896 | } | |
02aa26ce | 6897 | /* allow nested opens and closes */ |
3280af22 | 6898 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6899 | break; |
3280af22 | 6900 | else if (*s == PL_multi_open) |
93a17b20 | 6901 | brackets++; |
63cd0674 | 6902 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 6903 | has_utf8 = TRUE; |
93a17b20 LW |
6904 | *to = *s; |
6905 | } | |
6906 | } | |
02aa26ce | 6907 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6908 | *to = '\0'; |
463ee0b2 | 6909 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6910 | |
02aa26ce NT |
6911 | /* |
6912 | * this next chunk reads more into the buffer if we're not done yet | |
6913 | */ | |
6914 | ||
b1c7b182 GS |
6915 | if (s < PL_bufend) |
6916 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6917 | |
6a27c188 | 6918 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6919 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6920 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6921 | (to[-2] == '\n' && to[-1] == '\r')) | |
6922 | { | |
f63a84b2 LW |
6923 | to[-2] = '\n'; |
6924 | to--; | |
6925 | SvCUR_set(sv, to - SvPVX(sv)); | |
6926 | } | |
6927 | else if (to[-1] == '\r') | |
6928 | to[-1] = '\n'; | |
6929 | } | |
6930 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6931 | to[-1] = '\n'; | |
6932 | #endif | |
6933 | ||
02aa26ce NT |
6934 | /* if we're out of file, or a read fails, bail and reset the current |
6935 | line marker so we can report where the unterminated string began | |
6936 | */ | |
3280af22 NIS |
6937 | if (!PL_rsfp || |
6938 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6939 | sv_free(sv); |
57843af0 | 6940 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6941 | return Nullch; |
6942 | } | |
02aa26ce | 6943 | /* we read a line, so increment our line counter */ |
57843af0 | 6944 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6945 | |
02aa26ce | 6946 | /* update debugger info */ |
3280af22 | 6947 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6948 | SV *sv = NEWSV(88,0); |
6949 | ||
93a17b20 | 6950 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6951 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6952 | (void)SvIOK_on(sv); |
6953 | SvIVX(sv) = 0; | |
57843af0 | 6954 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6955 | } |
a0ed51b3 | 6956 | |
3280af22 NIS |
6957 | /* having changed the buffer, we must update PL_bufend */ |
6958 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6959 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 6960 | } |
4e553d73 | 6961 | |
02aa26ce NT |
6962 | /* at this point, we have successfully read the delimited string */ |
6963 | ||
09bef843 SB |
6964 | if (keep_delims) |
6965 | sv_catpvn(sv, s, 1); | |
89491803 | 6966 | if (has_utf8) |
b1c7b182 | 6967 | SvUTF8_on(sv); |
57843af0 | 6968 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6969 | s++; |
02aa26ce NT |
6970 | |
6971 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6972 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6973 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6974 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6975 | } |
02aa26ce NT |
6976 | |
6977 | /* decide whether this is the first or second quoted string we've read | |
6978 | for this op | |
6979 | */ | |
4e553d73 | 6980 | |
3280af22 NIS |
6981 | if (PL_lex_stuff) |
6982 | PL_lex_repl = sv; | |
79072805 | 6983 | else |
3280af22 | 6984 | PL_lex_stuff = sv; |
378cc40b LW |
6985 | return s; |
6986 | } | |
6987 | ||
02aa26ce NT |
6988 | /* |
6989 | scan_num | |
6990 | takes: pointer to position in buffer | |
6991 | returns: pointer to new position in buffer | |
6992 | side-effects: builds ops for the constant in yylval.op | |
6993 | ||
6994 | Read a number in any of the formats that Perl accepts: | |
6995 | ||
7fd134d9 JH |
6996 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
6997 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
6998 | 0b[01](_?[01])* |
6999 | 0[0-7](_?[0-7])* | |
7000 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7001 | |
3280af22 | 7002 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7003 | thing it reads. |
7004 | ||
7005 | If it reads a number without a decimal point or an exponent, it will | |
7006 | try converting the number to an integer and see if it can do so | |
7007 | without loss of precision. | |
7008 | */ | |
4e553d73 | 7009 | |
378cc40b | 7010 | char * |
b73d6f50 | 7011 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7012 | { |
02aa26ce NT |
7013 | register char *s = start; /* current position in buffer */ |
7014 | register char *d; /* destination in temp buffer */ | |
7015 | register char *e; /* end of temp buffer */ | |
86554af2 | 7016 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7017 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7018 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7019 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7020 | static char number_too_long[] = "Number too long"; |
378cc40b | 7021 | |
02aa26ce NT |
7022 | /* We use the first character to decide what type of number this is */ |
7023 | ||
378cc40b | 7024 | switch (*s) { |
79072805 | 7025 | default: |
cea2e8a9 | 7026 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7027 | |
02aa26ce | 7028 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7029 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7030 | case '0': |
7031 | { | |
02aa26ce NT |
7032 | /* variables: |
7033 | u holds the "number so far" | |
4f19785b WSI |
7034 | shift the power of 2 of the base |
7035 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7036 | overflowed was the number more than we can hold? |
7037 | ||
7038 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7039 | we in octal/hex/binary?" indicator to disallow hex characters |
7040 | when in octal mode. | |
02aa26ce | 7041 | */ |
9e24b6e2 JH |
7042 | NV n = 0.0; |
7043 | UV u = 0; | |
79072805 | 7044 | I32 shift; |
9e24b6e2 JH |
7045 | bool overflowed = FALSE; |
7046 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
7047 | static char* bases[5] = { "", "binary", "", "octal", | |
7048 | "hexadecimal" }; | |
7049 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7050 | "Hexadecimal" }; | |
7051 | static char *maxima[5] = { "", | |
7052 | "0b11111111111111111111111111111111", | |
7053 | "", | |
893fe2c2 | 7054 | "037777777777", |
9e24b6e2 JH |
7055 | "0xffffffff" }; |
7056 | char *base, *Base, *max; | |
378cc40b | 7057 | |
02aa26ce | 7058 | /* check for hex */ |
378cc40b LW |
7059 | if (s[1] == 'x') { |
7060 | shift = 4; | |
7061 | s += 2; | |
4f19785b WSI |
7062 | } else if (s[1] == 'b') { |
7063 | shift = 1; | |
7064 | s += 2; | |
378cc40b | 7065 | } |
02aa26ce | 7066 | /* check for a decimal in disguise */ |
b78218b7 | 7067 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7068 | goto decimal; |
02aa26ce | 7069 | /* so it must be octal */ |
928753ea | 7070 | else { |
378cc40b | 7071 | shift = 3; |
928753ea JH |
7072 | s++; |
7073 | } | |
7074 | ||
7075 | if (*s == '_') { | |
7076 | if (ckWARN(WARN_SYNTAX)) | |
7077 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7078 | "Misplaced _ in number"); | |
7079 | lastub = s++; | |
7080 | } | |
9e24b6e2 JH |
7081 | |
7082 | base = bases[shift]; | |
7083 | Base = Bases[shift]; | |
7084 | max = maxima[shift]; | |
02aa26ce | 7085 | |
4f19785b | 7086 | /* read the rest of the number */ |
378cc40b | 7087 | for (;;) { |
9e24b6e2 | 7088 | /* x is used in the overflow test, |
893fe2c2 | 7089 | b is the digit we're adding on. */ |
9e24b6e2 | 7090 | UV x, b; |
55497cff | 7091 | |
378cc40b | 7092 | switch (*s) { |
02aa26ce NT |
7093 | |
7094 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7095 | default: |
7096 | goto out; | |
02aa26ce | 7097 | |
928753ea | 7098 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7099 | case '_': |
928753ea JH |
7100 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
7101 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7102 | "Misplaced _ in number"); | |
7103 | lastub = s++; | |
de3bb511 | 7104 | break; |
02aa26ce NT |
7105 | |
7106 | /* 8 and 9 are not octal */ | |
378cc40b | 7107 | case '8': case '9': |
4f19785b | 7108 | if (shift == 3) |
cea2e8a9 | 7109 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7110 | /* FALL THROUGH */ |
02aa26ce NT |
7111 | |
7112 | /* octal digits */ | |
4f19785b | 7113 | case '2': case '3': case '4': |
378cc40b | 7114 | case '5': case '6': case '7': |
4f19785b | 7115 | if (shift == 1) |
cea2e8a9 | 7116 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7117 | /* FALL THROUGH */ |
7118 | ||
7119 | case '0': case '1': | |
02aa26ce | 7120 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7121 | goto digit; |
02aa26ce NT |
7122 | |
7123 | /* hex digits */ | |
378cc40b LW |
7124 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7125 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7126 | /* make sure they said 0x */ |
378cc40b LW |
7127 | if (shift != 4) |
7128 | goto out; | |
55497cff | 7129 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7130 | |
7131 | /* Prepare to put the digit we have onto the end | |
7132 | of the number so far. We check for overflows. | |
7133 | */ | |
7134 | ||
55497cff | 7135 | digit: |
9e24b6e2 JH |
7136 | if (!overflowed) { |
7137 | x = u << shift; /* make room for the digit */ | |
7138 | ||
7139 | if ((x >> shift) != u | |
7140 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7141 | overflowed = TRUE; |
7142 | n = (NV) u; | |
767a6a26 PM |
7143 | if (ckWARN_d(WARN_OVERFLOW)) |
7144 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
7145 | "Integer overflow in %s number", |
7146 | base); | |
7147 | } else | |
7148 | u = x | b; /* add the digit to the end */ | |
7149 | } | |
7150 | if (overflowed) { | |
7151 | n *= nvshift[shift]; | |
7152 | /* If an NV has not enough bits in its | |
7153 | * mantissa to represent an UV this summing of | |
7154 | * small low-order numbers is a waste of time | |
7155 | * (because the NV cannot preserve the | |
7156 | * low-order bits anyway): we could just | |
7157 | * remember when did we overflow and in the | |
7158 | * end just multiply n by the right | |
7159 | * amount. */ | |
7160 | n += (NV) b; | |
55497cff | 7161 | } |
378cc40b LW |
7162 | break; |
7163 | } | |
7164 | } | |
02aa26ce NT |
7165 | |
7166 | /* if we get here, we had success: make a scalar value from | |
7167 | the number. | |
7168 | */ | |
378cc40b | 7169 | out: |
928753ea JH |
7170 | |
7171 | /* final misplaced underbar check */ | |
7172 | if (s[-1] == '_') { | |
7173 | if (ckWARN(WARN_SYNTAX)) | |
7174 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); | |
7175 | } | |
7176 | ||
79072805 | 7177 | sv = NEWSV(92,0); |
9e24b6e2 | 7178 | if (overflowed) { |
767a6a26 PM |
7179 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
7180 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
7181 | "%s number > %s non-portable", |
7182 | Base, max); | |
7183 | sv_setnv(sv, n); | |
7184 | } | |
7185 | else { | |
15041a67 | 7186 | #if UVSIZE > 4 |
767a6a26 PM |
7187 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
7188 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
7189 | "%s number > %s non-portable", |
7190 | Base, max); | |
2cc4c2dc | 7191 | #endif |
9e24b6e2 JH |
7192 | sv_setuv(sv, u); |
7193 | } | |
2cc4c2dc | 7194 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 7195 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7196 | } |
7197 | break; | |
02aa26ce NT |
7198 | |
7199 | /* | |
7200 | handle decimal numbers. | |
7201 | we're also sent here when we read a 0 as the first digit | |
7202 | */ | |
378cc40b LW |
7203 | case '1': case '2': case '3': case '4': case '5': |
7204 | case '6': case '7': case '8': case '9': case '.': | |
7205 | decimal: | |
3280af22 NIS |
7206 | d = PL_tokenbuf; |
7207 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7208 | floatit = FALSE; |
02aa26ce NT |
7209 | |
7210 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7211 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7212 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7213 | if -w is on |
7214 | */ | |
93a17b20 | 7215 | if (*s == '_') { |
928753ea JH |
7216 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
7217 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7218 | "Misplaced _ in number"); | |
7219 | lastub = s++; | |
93a17b20 | 7220 | } |
fc36a67e | 7221 | else { |
02aa26ce | 7222 | /* check for end of fixed-length buffer */ |
fc36a67e | 7223 | if (d >= e) |
cea2e8a9 | 7224 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7225 | /* if we're ok, copy the character */ |
378cc40b | 7226 | *d++ = *s++; |
fc36a67e | 7227 | } |
378cc40b | 7228 | } |
02aa26ce NT |
7229 | |
7230 | /* final misplaced underbar check */ | |
928753ea | 7231 | if (lastub && s == lastub + 1) { |
d008e5eb | 7232 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 7233 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 7234 | } |
02aa26ce NT |
7235 | |
7236 | /* read a decimal portion if there is one. avoid | |
7237 | 3..5 being interpreted as the number 3. followed | |
7238 | by .5 | |
7239 | */ | |
2f3197b3 | 7240 | if (*s == '.' && s[1] != '.') { |
79072805 | 7241 | floatit = TRUE; |
378cc40b | 7242 | *d++ = *s++; |
02aa26ce | 7243 | |
928753ea JH |
7244 | if (*s == '_') { |
7245 | if (ckWARN(WARN_SYNTAX)) | |
7246 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7247 | "Misplaced _ in number"); | |
7248 | lastub = s; | |
7249 | } | |
7250 | ||
7251 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7252 | */ |
fc36a67e | 7253 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7254 | /* fixed length buffer check */ |
fc36a67e | 7255 | if (d >= e) |
cea2e8a9 | 7256 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7257 | if (*s == '_') { |
7258 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
7259 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7260 | "Misplaced _ in number"); | |
7261 | lastub = s; | |
7262 | } | |
7263 | else | |
fc36a67e | 7264 | *d++ = *s; |
378cc40b | 7265 | } |
928753ea JH |
7266 | /* fractional part ending in underbar? */ |
7267 | if (s[-1] == '_') { | |
7268 | if (ckWARN(WARN_SYNTAX)) | |
7269 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7270 | "Misplaced _ in number"); | |
7271 | } | |
dd629d5b GS |
7272 | if (*s == '.' && isDIGIT(s[1])) { |
7273 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7274 | s = start; |
dd629d5b GS |
7275 | goto vstring; |
7276 | } | |
378cc40b | 7277 | } |
02aa26ce NT |
7278 | |
7279 | /* read exponent part, if present */ | |
7fd134d9 | 7280 | if (*s && strchr("eE",*s) && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7281 | floatit = TRUE; |
7282 | s++; | |
02aa26ce NT |
7283 | |
7284 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7285 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7286 | |
7fd134d9 JH |
7287 | /* stray preinitial _ */ |
7288 | if (*s == '_') { | |
7289 | if (ckWARN(WARN_SYNTAX)) | |
7290 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7291 | "Misplaced _ in number"); | |
7292 | lastub = s++; | |
7293 | } | |
7294 | ||
02aa26ce | 7295 | /* allow positive or negative exponent */ |
378cc40b LW |
7296 | if (*s == '+' || *s == '-') |
7297 | *d++ = *s++; | |
02aa26ce | 7298 | |
7fd134d9 JH |
7299 | /* stray initial _ */ |
7300 | if (*s == '_') { | |
7301 | if (ckWARN(WARN_SYNTAX)) | |
7302 | Perl_warner(aTHX_ WARN_SYNTAX, | |
7303 | "Misplaced _ in number"); | |
7304 | lastub = s++; | |
7305 | } | |
7306 | ||
7fd134d9 JH |
7307 | /* read digits of exponent */ |
7308 | while (isDIGIT(*s) || *s == '_') { | |
7309 | if (isDIGIT(*s)) { | |
7310 | if (d >= e) | |
7311 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7312 | *d++ = *s++; |
7fd134d9 JH |
7313 | } |
7314 | else { | |
7315 | if (ckWARN(WARN_SYNTAX) && | |
7316 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7317 | (!isDIGIT(s[1]) && s[1] != '_'))) |
7fd134d9 JH |
7318 | Perl_warner(aTHX_ WARN_SYNTAX, |
7319 | "Misplaced _ in number"); | |
b3b48e3e | 7320 | lastub = s++; |
7fd134d9 | 7321 | } |
7fd134d9 | 7322 | } |
378cc40b | 7323 | } |
02aa26ce | 7324 | |
02aa26ce NT |
7325 | |
7326 | /* make an sv from the string */ | |
79072805 | 7327 | sv = NEWSV(92,0); |
097ee67d | 7328 | |
0b7fceb9 | 7329 | /* |
58bb9ec3 NC |
7330 | We try to do an integer conversion first if no characters |
7331 | indicating "float" have been found. | |
0b7fceb9 MU |
7332 | */ |
7333 | ||
7334 | if (!floatit) { | |
58bb9ec3 NC |
7335 | UV uv; |
7336 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7337 | ||
7338 | if (flags == IS_NUMBER_IN_UV) { | |
7339 | if (uv <= IV_MAX) | |
86554af2 | 7340 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7341 | else |
c239479b | 7342 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7343 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7344 | if (uv <= (UV) IV_MIN) | |
7345 | sv_setiv(sv, -(IV)uv); | |
7346 | else | |
7347 | floatit = TRUE; | |
7348 | } else | |
7349 | floatit = TRUE; | |
7350 | } | |
0b7fceb9 | 7351 | if (floatit) { |
58bb9ec3 NC |
7352 | /* terminate the string */ |
7353 | *d = '\0'; | |
86554af2 JH |
7354 | nv = Atof(PL_tokenbuf); |
7355 | sv_setnv(sv, nv); | |
7356 | } | |
86554af2 | 7357 | |
b8403495 JH |
7358 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7359 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7360 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7361 | (floatit ? "float" : "integer"), |
7362 | sv, Nullsv, NULL); | |
378cc40b | 7363 | break; |
0b7fceb9 | 7364 | |
e312add1 | 7365 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7366 | case 'v': |
dd629d5b | 7367 | vstring: |
f4758303 JP |
7368 | sv = NEWSV(92,5); /* preallocate storage space */ |
7369 | s = new_vstring(s,sv); | |
a7cb1f99 | 7370 | break; |
79072805 | 7371 | } |
a687059c | 7372 | |
02aa26ce NT |
7373 | /* make the op for the constant and return */ |
7374 | ||
a86a20aa | 7375 | if (sv) |
b73d6f50 | 7376 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7377 | else |
b73d6f50 | 7378 | lvalp->opval = Nullop; |
a687059c | 7379 | |
378cc40b LW |
7380 | return s; |
7381 | } | |
7382 | ||
76e3520e | 7383 | STATIC char * |
cea2e8a9 | 7384 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7385 | { |
79072805 | 7386 | register char *eol; |
378cc40b | 7387 | register char *t; |
79cb57f6 | 7388 | SV *stuff = newSVpvn("",0); |
79072805 | 7389 | bool needargs = FALSE; |
378cc40b | 7390 | |
79072805 | 7391 | while (!needargs) { |
c2e66d9e | 7392 | if (*s == '.' || *s == /*{*/'}') { |
79072805 | 7393 | /*SUPPRESS 530*/ |
51882d45 | 7394 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7395 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7396 | #else |
bf4acbe4 | 7397 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7398 | #endif |
6a65c6a0 | 7399 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7400 | break; |
7401 | } | |
3280af22 | 7402 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7403 | eol = strchr(s,'\n'); |
0f85fab0 | 7404 | if (!eol++) |
3280af22 | 7405 | eol = PL_bufend; |
0f85fab0 LW |
7406 | } |
7407 | else | |
3280af22 | 7408 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7409 | if (*s != '#') { |
a0d0e21e LW |
7410 | for (t = s; t < eol; t++) { |
7411 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7412 | needargs = FALSE; | |
7413 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7414 | } |
a0d0e21e LW |
7415 | if (*t == '@' || *t == '^') |
7416 | needargs = TRUE; | |
378cc40b | 7417 | } |
7121b347 MG |
7418 | if (eol > s) { |
7419 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7420 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7421 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7422 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7423 | end[-2] = '\n'; | |
7424 | end[-1] = '\0'; | |
7425 | SvCUR(stuff)--; | |
7426 | } | |
2dc4c65b | 7427 | #endif |
7121b347 MG |
7428 | } |
7429 | else | |
7430 | break; | |
79072805 LW |
7431 | } |
7432 | s = eol; | |
3280af22 NIS |
7433 | if (PL_rsfp) { |
7434 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7435 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7436 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7437 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7438 | if (!s) { |
3280af22 | 7439 | s = PL_bufptr; |
79072805 | 7440 | yyerror("Format not terminated"); |
378cc40b LW |
7441 | break; |
7442 | } | |
378cc40b | 7443 | } |
463ee0b2 | 7444 | incline(s); |
79072805 | 7445 | } |
a0d0e21e LW |
7446 | enough: |
7447 | if (SvCUR(stuff)) { | |
3280af22 | 7448 | PL_expect = XTERM; |
79072805 | 7449 | if (needargs) { |
3280af22 NIS |
7450 | PL_lex_state = LEX_NORMAL; |
7451 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7452 | force_next(','); |
7453 | } | |
a0d0e21e | 7454 | else |
3280af22 NIS |
7455 | PL_lex_state = LEX_FORMLINE; |
7456 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7457 | force_next(THING); |
3280af22 | 7458 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7459 | force_next(LSTOP); |
378cc40b | 7460 | } |
79072805 | 7461 | else { |
8990e307 | 7462 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7463 | PL_lex_formbrack = 0; |
7464 | PL_bufptr = s; | |
79072805 LW |
7465 | } |
7466 | return s; | |
378cc40b | 7467 | } |
a687059c | 7468 | |
76e3520e | 7469 | STATIC void |
cea2e8a9 | 7470 | S_set_csh(pTHX) |
a687059c | 7471 | { |
ae986130 | 7472 | #ifdef CSH |
3280af22 NIS |
7473 | if (!PL_cshlen) |
7474 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7475 | #endif |
a687059c | 7476 | } |
463ee0b2 | 7477 | |
ba6d6ac9 | 7478 | I32 |
864dbfa3 | 7479 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7480 | { |
3280af22 NIS |
7481 | I32 oldsavestack_ix = PL_savestack_ix; |
7482 | CV* outsidecv = PL_compcv; | |
748a9306 | 7483 | AV* comppadlist; |
8990e307 | 7484 | |
3280af22 NIS |
7485 | if (PL_compcv) { |
7486 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7487 | } |
7766f137 | 7488 | SAVEI32(PL_subline); |
3280af22 NIS |
7489 | save_item(PL_subname); |
7490 | SAVEI32(PL_padix); | |
354992b1 | 7491 | SAVECOMPPAD(); |
3280af22 NIS |
7492 | SAVESPTR(PL_comppad_name); |
7493 | SAVESPTR(PL_compcv); | |
7494 | SAVEI32(PL_comppad_name_fill); | |
7495 | SAVEI32(PL_min_intro_pending); | |
7496 | SAVEI32(PL_max_intro_pending); | |
7497 | SAVEI32(PL_pad_reset_pending); | |
7498 | ||
7499 | PL_compcv = (CV*)NEWSV(1104,0); | |
7500 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7501 | CvFLAGS(PL_compcv) |= flags; | |
7502 | ||
7503 | PL_comppad = newAV(); | |
7504 | av_push(PL_comppad, Nullsv); | |
7505 | PL_curpad = AvARRAY(PL_comppad); | |
7506 | PL_comppad_name = newAV(); | |
7507 | PL_comppad_name_fill = 0; | |
7508 | PL_min_intro_pending = 0; | |
7509 | PL_padix = 0; | |
57843af0 | 7510 | PL_subline = CopLINE(PL_curcop); |
4d1ff10f | 7511 | #ifdef USE_5005THREADS |
79cb57f6 | 7512 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7513 | PL_curpad[0] = (SV*)newAV(); |
7514 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
4d1ff10f | 7515 | #endif /* USE_5005THREADS */ |
748a9306 LW |
7516 | |
7517 | comppadlist = newAV(); | |
7518 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7519 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7520 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7521 | |
3280af22 NIS |
7522 | CvPADLIST(PL_compcv) = comppadlist; |
7523 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
4d1ff10f | 7524 | #ifdef USE_5005THREADS |
533c011a NIS |
7525 | CvOWNER(PL_compcv) = 0; |
7526 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7527 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
4d1ff10f | 7528 | #endif /* USE_5005THREADS */ |
748a9306 | 7529 | |
8990e307 LW |
7530 | return oldsavestack_ix; |
7531 | } | |
7532 | ||
084592ab CN |
7533 | #ifdef __SC__ |
7534 | #pragma segment Perl_yylex | |
7535 | #endif | |
8990e307 | 7536 | int |
864dbfa3 | 7537 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7538 | { |
faef0170 | 7539 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7540 | yyerror(s); |
faef0170 | 7541 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7542 | return 0; |
8990e307 LW |
7543 | } |
7544 | ||
7545 | int | |
864dbfa3 | 7546 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7547 | { |
68dc0745 | 7548 | char *where = NULL; |
7549 | char *context = NULL; | |
7550 | int contlen = -1; | |
46fc3d4c | 7551 | SV *msg; |
463ee0b2 | 7552 | |
3280af22 | 7553 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7554 | where = "at EOF"; |
3280af22 NIS |
7555 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7556 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7557 | while (isSPACE(*PL_oldoldbufptr)) | |
7558 | PL_oldoldbufptr++; | |
7559 | context = PL_oldoldbufptr; | |
7560 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7561 | } |
3280af22 NIS |
7562 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7563 | PL_oldbufptr != PL_bufptr) { | |
7564 | while (isSPACE(*PL_oldbufptr)) | |
7565 | PL_oldbufptr++; | |
7566 | context = PL_oldbufptr; | |
7567 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7568 | } |
7569 | else if (yychar > 255) | |
68dc0745 | 7570 | where = "next token ???"; |
cdfb297e GS |
7571 | #ifdef USE_PURE_BISON |
7572 | /* GNU Bison sets the value -2 */ | |
7573 | else if (yychar == -2) { | |
7574 | #else | |
463ee0b2 | 7575 | else if ((yychar & 127) == 127) { |
cdfb297e | 7576 | #endif |
3280af22 NIS |
7577 | if (PL_lex_state == LEX_NORMAL || |
7578 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7579 | where = "at end of line"; |
3280af22 | 7580 | else if (PL_lex_inpat) |
68dc0745 | 7581 | where = "within pattern"; |
463ee0b2 | 7582 | else |
68dc0745 | 7583 | where = "within string"; |
463ee0b2 | 7584 | } |
46fc3d4c | 7585 | else { |
79cb57f6 | 7586 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7587 | if (yychar < 32) |
cea2e8a9 | 7588 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7589 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7590 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7591 | else |
cea2e8a9 | 7592 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7593 | where = SvPVX(where_sv); |
463ee0b2 | 7594 | } |
46fc3d4c | 7595 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7596 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7597 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7598 | if (context) |
cea2e8a9 | 7599 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7600 | else |
cea2e8a9 | 7601 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7602 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7603 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7604 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7605 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7606 | PL_multi_end = 0; |
a0d0e21e | 7607 | } |
faef0170 | 7608 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7609 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7610 | else |
5a844595 | 7611 | qerror(msg); |
c7d6bfb2 GS |
7612 | if (PL_error_count >= 10) { |
7613 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 7614 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
c7d6bfb2 GS |
7615 | ERRSV, CopFILE(PL_curcop)); |
7616 | else | |
7617 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
7618 | CopFILE(PL_curcop)); | |
7619 | } | |
3280af22 NIS |
7620 | PL_in_my = 0; |
7621 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7622 | return 0; |
7623 | } | |
084592ab CN |
7624 | #ifdef __SC__ |
7625 | #pragma segment Main | |
7626 | #endif | |
4e35701f | 7627 | |
b250498f | 7628 | STATIC char* |
3ae08724 | 7629 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 7630 | { |
b250498f GS |
7631 | STRLEN slen; |
7632 | slen = SvCUR(PL_linestr); | |
7633 | switch (*s) { | |
4e553d73 NIS |
7634 | case 0xFF: |
7635 | if (s[1] == 0xFE) { | |
01ec43d0 | 7636 | /* UTF-16 little-endian */ |
3ae08724 | 7637 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
01ec43d0 GS |
7638 | Perl_croak(aTHX_ "Unsupported script encoding"); |
7639 | #ifndef PERL_NO_UTF16_FILTER | |
dea0fc0b | 7640 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-LE script encoding\n")); |
3ae08724 | 7641 | s += 2; |
dea0fc0b JH |
7642 | if (PL_bufend > (char*)s) { |
7643 | U8 *news; | |
7644 | I32 newlen; | |
7645 | ||
7646 | filter_add(utf16rev_textfilter, NULL); | |
7647 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
f72f5f89 JH |
7648 | PL_bufend = (char*)utf16_to_utf8_reversed(s, news, |
7649 | PL_bufend - (char*)s - 1, | |
dea0fc0b JH |
7650 | &newlen); |
7651 | Copy(news, s, newlen, U8); | |
7652 | SvCUR_set(PL_linestr, newlen); | |
7653 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7654 | news[newlen++] = '\0'; | |
7655 | Safefree(news); | |
7656 | } | |
b250498f | 7657 | #else |
01ec43d0 | 7658 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7659 | #endif |
01ec43d0 GS |
7660 | } |
7661 | break; | |
78ae23f5 | 7662 | case 0xFE: |
3ae08724 | 7663 | if (s[1] == 0xFF) { /* UTF-16 big-endian */ |
01ec43d0 | 7664 | #ifndef PERL_NO_UTF16_FILTER |
dea0fc0b JH |
7665 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding\n")); |
7666 | s += 2; | |
7667 | if (PL_bufend > (char *)s) { | |
7668 | U8 *news; | |
7669 | I32 newlen; | |
7670 | ||
7671 | filter_add(utf16_textfilter, NULL); | |
7672 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
7673 | PL_bufend = (char*)utf16_to_utf8(s, news, | |
7674 | PL_bufend - (char*)s, | |
7675 | &newlen); | |
7676 | Copy(news, s, newlen, U8); | |
7677 | SvCUR_set(PL_linestr, newlen); | |
7678 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
7679 | news[newlen++] = '\0'; | |
7680 | Safefree(news); | |
7681 | } | |
b250498f | 7682 | #else |
01ec43d0 | 7683 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7684 | #endif |
01ec43d0 GS |
7685 | } |
7686 | break; | |
3ae08724 GS |
7687 | case 0xEF: |
7688 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
dea0fc0b | 7689 | DEBUG_p(PerlIO_printf(Perl_debug_log, "UTF-8 script encoding\n")); |
01ec43d0 GS |
7690 | s += 3; /* UTF-8 */ |
7691 | } | |
7692 | break; | |
7693 | case 0: | |
7694 | if (slen > 3 && s[1] == 0 && /* UTF-32 big-endian */ | |
3ae08724 | 7695 | s[2] == 0xFE && s[3] == 0xFF) |
01ec43d0 GS |
7696 | { |
7697 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7698 | } | |
7699 | } | |
b8f84bb2 | 7700 | return (char*)s; |
b250498f | 7701 | } |
4755096e | 7702 | |
4755096e GS |
7703 | /* |
7704 | * restore_rsfp | |
7705 | * Restore a source filter. | |
7706 | */ | |
7707 | ||
7708 | static void | |
acfe0abc | 7709 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
7710 | { |
7711 | PerlIO *fp = (PerlIO*)f; | |
7712 | ||
7713 | if (PL_rsfp == PerlIO_stdin()) | |
7714 | PerlIO_clearerr(PL_rsfp); | |
7715 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7716 | PerlIO_close(PL_rsfp); | |
7717 | PL_rsfp = fp; | |
7718 | } | |
6e3aabd6 GS |
7719 | |
7720 | #ifndef PERL_NO_UTF16_FILTER | |
7721 | static I32 | |
acfe0abc | 7722 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7723 | { |
7724 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7725 | if (count) { | |
7726 | U8* tmps; | |
7727 | U8* tend; | |
dea0fc0b | 7728 | I32 newlen; |
6e3aabd6 | 7729 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
f72f5f89 JH |
7730 | if (!*SvPV_nolen(sv)) |
7731 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7732 | return count; | |
4e553d73 | 7733 | |
dea0fc0b | 7734 | tend = utf16_to_utf8((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7735 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7736 | } | |
7737 | return count; | |
7738 | } | |
7739 | ||
7740 | static I32 | |
acfe0abc | 7741 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 GS |
7742 | { |
7743 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
7744 | if (count) { | |
7745 | U8* tmps; | |
7746 | U8* tend; | |
dea0fc0b | 7747 | I32 newlen; |
f72f5f89 JH |
7748 | if (!*SvPV_nolen(sv)) |
7749 | /* Game over, but don't feed an odd-length string to utf16_to_utf8 */ | |
7750 | return count; | |
7751 | ||
6e3aabd6 | 7752 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
dea0fc0b | 7753 | tend = utf16_to_utf8_reversed((U8*)SvPVX(sv), tmps, SvCUR(sv), &newlen); |
6e3aabd6 GS |
7754 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
7755 | } | |
7756 | return count; | |
7757 | } | |
7758 | #endif | |
9f4817db | 7759 |