Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, 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 | |
ffb4593c NT |
16 | * parser, perly.y. |
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 | |
51371543 | 30 | static void restore_rsfp(pTHXo_ void *f); |
51371543 | 31 | |
9059aa12 LW |
32 | #define XFAKEBRACK 128 |
33 | #define XENUMMASK 127 | |
34 | ||
a0ed51b3 | 35 | #define UTF (PL_hints & HINT_UTF8) |
834a4ddd LW |
36 | /* |
37 | * Note: we try to be careful never to call the isXXX_utf8() functions | |
38 | * unless we're pretty sure we've seen the beginning of a UTF-8 character | |
39 | * (that is, the two high bits are set). Otherwise we risk loading in the | |
40 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. | |
41 | */ | |
42 | #define isIDFIRST_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
43 | ? isIDFIRST(*(p)) \ | |
44 | : isIDFIRST_utf8((U8*)p)) | |
45 | #define isALNUM_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
46 | ? isALNUM(*(p)) \ | |
47 | : isALNUM_utf8((U8*)p)) | |
a0ed51b3 | 48 | |
2b92dfce GS |
49 | /* In variables name $^X, these are the legal values for X. |
50 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
51 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
52 | ||
ffb4593c NT |
53 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
54 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
55 | * can get by with a single comparison (if the compiler is smart enough). |
56 | */ | |
57 | ||
fb73857a | 58 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
59 | ||
55497cff | 60 | #define LEX_NORMAL 10 |
61 | #define LEX_INTERPNORMAL 9 | |
62 | #define LEX_INTERPCASEMOD 8 | |
63 | #define LEX_INTERPPUSH 7 | |
64 | #define LEX_INTERPSTART 6 | |
65 | #define LEX_INTERPEND 5 | |
66 | #define LEX_INTERPENDMAYBE 4 | |
67 | #define LEX_INTERPCONCAT 3 | |
68 | #define LEX_INTERPCONST 2 | |
69 | #define LEX_FORMLINE 1 | |
70 | #define LEX_KNOWNEXT 0 | |
79072805 | 71 | |
395c3793 LW |
72 | #ifdef I_FCNTL |
73 | #include <fcntl.h> | |
74 | #endif | |
fe14fcc3 LW |
75 | #ifdef I_SYS_FILE |
76 | #include <sys/file.h> | |
77 | #endif | |
395c3793 | 78 | |
a790bc05 | 79 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
80 | #ifdef I_UNISTD | |
81 | # include <unistd.h> /* Needed for execv() */ | |
82 | #endif | |
83 | ||
84 | ||
79072805 LW |
85 | #ifdef ff_next |
86 | #undef ff_next | |
d48672a2 LW |
87 | #endif |
88 | ||
a1a0e61e TD |
89 | #ifdef USE_PURE_BISON |
90 | YYSTYPE* yylval_pointer = NULL; | |
91 | int* yychar_pointer = NULL; | |
22c35a8c GS |
92 | # undef yylval |
93 | # undef yychar | |
e4bfbdd4 JH |
94 | # define yylval (*yylval_pointer) |
95 | # define yychar (*yychar_pointer) | |
96 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
97 | # undef yylex |
98 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
99 | #endif |
100 | ||
79072805 | 101 | #include "keywords.h" |
fe14fcc3 | 102 | |
ffb4593c NT |
103 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
104 | ||
ae986130 LW |
105 | #ifdef CLINE |
106 | #undef CLINE | |
107 | #endif | |
57843af0 | 108 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 109 | |
ffb4593c NT |
110 | /* |
111 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 112 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
113 | * |
114 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
115 | * OPERATOR : generic operator | |
116 | * AOPERATOR : assignment operator | |
117 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
118 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
119 | * PREREF : *EXPR where EXPR is not a simple identifier | |
120 | * TERM : expression term | |
121 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
122 | * FTST : file test operator | |
123 | * FUN0 : zero-argument function | |
2d2e263d | 124 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
125 | * BOop : bitwise or or xor |
126 | * BAop : bitwise and | |
127 | * SHop : shift operator | |
128 | * PWop : power operator | |
9cbb5ea2 | 129 | * PMop : pattern-matching operator |
ffb4593c NT |
130 | * Aop : addition-level operator |
131 | * Mop : multiplication-level operator | |
132 | * Eop : equality-testing operator | |
133 | * Rop : relational operator <= != gt | |
134 | * | |
135 | * Also see LOP and lop() below. | |
136 | */ | |
137 | ||
3280af22 NIS |
138 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
139 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
140 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
141 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
142 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
143 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
144 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
145 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
146 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
147 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
148 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
149 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
150 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
151 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
152 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
153 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
154 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
155 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
156 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
157 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 158 | |
a687059c LW |
159 | /* This bit of chicanery makes a unary function followed by |
160 | * a parenthesis into a function with one argument, highest precedence. | |
161 | */ | |
2f3197b3 | 162 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
163 | PL_expect = XTERM, \ |
164 | PL_bufptr = s, \ | |
165 | PL_last_uni = PL_oldbufptr, \ | |
166 | PL_last_lop_op = f, \ | |
a687059c LW |
167 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
168 | ||
79072805 | 169 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
170 | PL_bufptr = s, \ |
171 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
172 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
173 | ||
9f68db38 | 174 | /* grandfather return to old style */ |
3280af22 | 175 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 176 | |
ffb4593c NT |
177 | /* |
178 | * S_ao | |
179 | * | |
180 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
181 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
182 | */ | |
183 | ||
76e3520e | 184 | STATIC int |
cea2e8a9 | 185 | S_ao(pTHX_ int toketype) |
a0d0e21e | 186 | { |
3280af22 NIS |
187 | if (*PL_bufptr == '=') { |
188 | PL_bufptr++; | |
a0d0e21e LW |
189 | if (toketype == ANDAND) |
190 | yylval.ival = OP_ANDASSIGN; | |
191 | else if (toketype == OROR) | |
192 | yylval.ival = OP_ORASSIGN; | |
193 | toketype = ASSIGNOP; | |
194 | } | |
195 | return toketype; | |
196 | } | |
197 | ||
ffb4593c NT |
198 | /* |
199 | * S_no_op | |
200 | * When Perl expects an operator and finds something else, no_op | |
201 | * prints the warning. It always prints "<something> found where | |
202 | * operator expected. It prints "Missing semicolon on previous line?" | |
203 | * if the surprise occurs at the start of the line. "do you need to | |
204 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
205 | * where the compiler doesn't know if foo is a method call or a function. | |
206 | * It prints "Missing operator before end of line" if there's nothing | |
207 | * after the missing operator, or "... before <...>" if there is something | |
208 | * after the missing operator. | |
209 | */ | |
210 | ||
76e3520e | 211 | STATIC void |
cea2e8a9 | 212 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 213 | { |
3280af22 NIS |
214 | char *oldbp = PL_bufptr; |
215 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 216 | |
1189a94a GS |
217 | if (!s) |
218 | s = oldbp; | |
219 | else { | |
220 | assert(s >= oldbp); | |
221 | PL_bufptr = s; | |
222 | } | |
cea2e8a9 | 223 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 224 | if (is_first) |
cea2e8a9 | 225 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
834a4ddd | 226 | else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) { |
748a9306 | 227 | char *t; |
834a4ddd | 228 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ; |
3280af22 | 229 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 230 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 231 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
232 | } |
233 | else | |
cea2e8a9 | 234 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 235 | PL_bufptr = oldbp; |
8990e307 LW |
236 | } |
237 | ||
ffb4593c NT |
238 | /* |
239 | * S_missingterm | |
240 | * Complain about missing quote/regexp/heredoc terminator. | |
241 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
242 | * If we're in a delimited string and the delimiter is a control | |
243 | * character, it's reformatted into a two-char sequence like ^C. | |
244 | * This is fatal. | |
245 | */ | |
246 | ||
76e3520e | 247 | STATIC void |
cea2e8a9 | 248 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
249 | { |
250 | char tmpbuf[3]; | |
251 | char q; | |
252 | if (s) { | |
253 | char *nl = strrchr(s,'\n'); | |
d2719217 | 254 | if (nl) |
8990e307 LW |
255 | *nl = '\0'; |
256 | } | |
9d116dd7 JH |
257 | else if ( |
258 | #ifdef EBCDIC | |
259 | iscntrl(PL_multi_close) | |
260 | #else | |
261 | PL_multi_close < 32 || PL_multi_close == 127 | |
262 | #endif | |
263 | ) { | |
8990e307 | 264 | *tmpbuf = '^'; |
3280af22 | 265 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
266 | s = "\\n"; |
267 | tmpbuf[2] = '\0'; | |
268 | s = tmpbuf; | |
269 | } | |
270 | else { | |
3280af22 | 271 | *tmpbuf = PL_multi_close; |
8990e307 LW |
272 | tmpbuf[1] = '\0'; |
273 | s = tmpbuf; | |
274 | } | |
275 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 276 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 277 | } |
79072805 | 278 | |
ffb4593c NT |
279 | /* |
280 | * Perl_deprecate | |
ffb4593c NT |
281 | */ |
282 | ||
79072805 | 283 | void |
864dbfa3 | 284 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 285 | { |
d008e5eb | 286 | dTHR; |
599cee73 | 287 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 288 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
289 | } |
290 | ||
ffb4593c NT |
291 | /* |
292 | * depcom | |
9cbb5ea2 | 293 | * Deprecate a comma-less variable list. |
ffb4593c NT |
294 | */ |
295 | ||
76e3520e | 296 | STATIC void |
cea2e8a9 | 297 | S_depcom(pTHX) |
a0d0e21e LW |
298 | { |
299 | deprecate("comma-less variable list"); | |
300 | } | |
301 | ||
ffb4593c | 302 | /* |
9cbb5ea2 GS |
303 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
304 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
305 | */ |
306 | ||
c39cd008 GS |
307 | #ifdef PERL_CR_FILTER |
308 | static void | |
309 | strip_return(SV *sv) | |
310 | { | |
311 | register char *s = SvPVX(sv); | |
312 | register char *e = s + SvCUR(sv); | |
313 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
314 | while (s < e) { | |
315 | if (*s++ == '\r' && *s == '\n') { | |
316 | /* hit a CR-LF, need to copy the rest */ | |
317 | register char *d = s - 1; | |
318 | *d++ = *s++; | |
319 | while (s < e) { | |
320 | if (*s == '\r' && s[1] == '\n') | |
321 | s++; | |
322 | *d++ = *s++; | |
323 | } | |
324 | SvCUR(sv) -= s - d; | |
325 | return; | |
326 | } | |
327 | } | |
328 | } | |
a868473f | 329 | |
76e3520e | 330 | STATIC I32 |
c39cd008 | 331 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 332 | { |
c39cd008 GS |
333 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
334 | if (count > 0 && !maxlen) | |
335 | strip_return(sv); | |
336 | return count; | |
a868473f NIS |
337 | } |
338 | #endif | |
339 | ||
a0ed51b3 | 340 | STATIC I32 |
cea2e8a9 | 341 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
342 | { |
343 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
344 | if (count) { | |
dfe13c55 GS |
345 | U8* tmps; |
346 | U8* tend; | |
347 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 348 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 349 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
350 | |
351 | } | |
352 | return count; | |
353 | } | |
354 | ||
355 | STATIC I32 | |
cea2e8a9 | 356 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
357 | { |
358 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
359 | if (count) { | |
dfe13c55 GS |
360 | U8* tmps; |
361 | U8* tend; | |
362 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 363 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 364 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
365 | |
366 | } | |
367 | return count; | |
368 | } | |
a868473f | 369 | |
ffb4593c NT |
370 | /* |
371 | * Perl_lex_start | |
9cbb5ea2 GS |
372 | * Initialize variables. Uses the Perl save_stack to save its state (for |
373 | * recursive calls to the parser). | |
ffb4593c NT |
374 | */ |
375 | ||
a0d0e21e | 376 | void |
864dbfa3 | 377 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 378 | { |
0f15f207 | 379 | dTHR; |
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); |
57843af0 | 390 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
391 | SAVEPPTR(PL_bufptr); |
392 | SAVEPPTR(PL_bufend); | |
393 | SAVEPPTR(PL_oldbufptr); | |
394 | SAVEPPTR(PL_oldoldbufptr); | |
395 | SAVEPPTR(PL_linestart); | |
396 | SAVESPTR(PL_linestr); | |
397 | SAVEPPTR(PL_lex_brackstack); | |
398 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 399 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
400 | SAVESPTR(PL_lex_stuff); |
401 | SAVEI32(PL_lex_defer); | |
09bef843 | 402 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 403 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
404 | SAVEINT(PL_expect); |
405 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
406 | |
407 | PL_lex_state = LEX_NORMAL; | |
408 | PL_lex_defer = 0; | |
409 | PL_expect = XSTATE; | |
410 | PL_lex_brackets = 0; | |
3280af22 NIS |
411 | New(899, PL_lex_brackstack, 120, char); |
412 | New(899, PL_lex_casestack, 12, char); | |
413 | SAVEFREEPV(PL_lex_brackstack); | |
414 | SAVEFREEPV(PL_lex_casestack); | |
415 | PL_lex_casemods = 0; | |
416 | *PL_lex_casestack = '\0'; | |
417 | PL_lex_dojoin = 0; | |
418 | PL_lex_starts = 0; | |
419 | PL_lex_stuff = Nullsv; | |
420 | PL_lex_repl = Nullsv; | |
421 | PL_lex_inpat = 0; | |
422 | PL_lex_inwhat = 0; | |
09bef843 | 423 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
424 | PL_linestr = line; |
425 | if (SvREADONLY(PL_linestr)) | |
426 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
427 | s = SvPV(PL_linestr, len); | |
8990e307 | 428 | if (len && s[len-1] != ';') { |
3280af22 NIS |
429 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
430 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
431 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 432 | } |
3280af22 NIS |
433 | SvTEMP_off(PL_linestr); |
434 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
435 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
436 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 437 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 438 | PL_rsfp = 0; |
79072805 | 439 | } |
a687059c | 440 | |
ffb4593c NT |
441 | /* |
442 | * Perl_lex_end | |
9cbb5ea2 GS |
443 | * Finalizer for lexing operations. Must be called when the parser is |
444 | * done with the lexer. | |
ffb4593c NT |
445 | */ |
446 | ||
463ee0b2 | 447 | void |
864dbfa3 | 448 | Perl_lex_end(pTHX) |
463ee0b2 | 449 | { |
3280af22 | 450 | PL_doextract = FALSE; |
463ee0b2 LW |
451 | } |
452 | ||
ffb4593c NT |
453 | /* |
454 | * S_incline | |
455 | * This subroutine has nothing to do with tilting, whether at windmills | |
456 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 457 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 458 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
459 | * # line 500 "foo.pm" |
460 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
461 | */ |
462 | ||
76e3520e | 463 | STATIC void |
cea2e8a9 | 464 | S_incline(pTHX_ char *s) |
463ee0b2 | 465 | { |
0f15f207 | 466 | dTHR; |
463ee0b2 LW |
467 | char *t; |
468 | char *n; | |
469 | char ch; | |
470 | int sawline = 0; | |
471 | ||
57843af0 | 472 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
473 | if (*s++ != '#') |
474 | return; | |
475 | while (*s == ' ' || *s == '\t') s++; | |
476 | if (strnEQ(s, "line ", 5)) { | |
477 | s += 5; | |
478 | sawline = 1; | |
479 | } | |
480 | if (!isDIGIT(*s)) | |
481 | return; | |
482 | n = s; | |
483 | while (isDIGIT(*s)) | |
484 | s++; | |
485 | while (*s == ' ' || *s == '\t') | |
486 | s++; | |
487 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
488 | s++; | |
489 | else { | |
490 | if (!sawline) | |
491 | return; /* false alarm */ | |
492 | for (t = s; !isSPACE(*t); t++) ; | |
493 | } | |
494 | ch = *t; | |
495 | *t = '\0'; | |
496 | if (t - s > 0) | |
57843af0 | 497 | CopFILE_set(PL_curcop, s); |
463ee0b2 | 498 | *t = ch; |
57843af0 | 499 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
500 | } |
501 | ||
ffb4593c NT |
502 | /* |
503 | * S_skipspace | |
504 | * Called to gobble the appropriate amount and type of whitespace. | |
505 | * Skips comments as well. | |
506 | */ | |
507 | ||
76e3520e | 508 | STATIC char * |
cea2e8a9 | 509 | S_skipspace(pTHX_ register char *s) |
a687059c | 510 | { |
11343788 | 511 | dTHR; |
3280af22 NIS |
512 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
513 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
514 | s++; |
515 | return s; | |
516 | } | |
517 | for (;;) { | |
fd049845 | 518 | STRLEN prevlen; |
09bef843 SB |
519 | SSize_t oldprevlen, oldoldprevlen; |
520 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
521 | while (s < PL_bufend && isSPACE(*s)) { |
522 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
523 | incline(s); | |
524 | } | |
ffb4593c NT |
525 | |
526 | /* comment */ | |
3280af22 NIS |
527 | if (s < PL_bufend && *s == '#') { |
528 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 529 | s++; |
60e6418e | 530 | if (s < PL_bufend) { |
463ee0b2 | 531 | s++; |
60e6418e GS |
532 | if (PL_in_eval && !PL_rsfp) { |
533 | incline(s); | |
534 | continue; | |
535 | } | |
536 | } | |
463ee0b2 | 537 | } |
ffb4593c NT |
538 | |
539 | /* only continue to recharge the buffer if we're at the end | |
540 | * of the buffer, we're not reading from a source filter, and | |
541 | * we're in normal lexing mode | |
542 | */ | |
09bef843 SB |
543 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
544 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 545 | return s; |
ffb4593c NT |
546 | |
547 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
548 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
549 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
550 | { | |
551 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
552 | if (PL_minus_n || PL_minus_p) { |
553 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
554 | ";}continue{print or die qq(-p destination: $!\\n)" : |
555 | ""); | |
3280af22 NIS |
556 | sv_catpv(PL_linestr,";}"); |
557 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
558 | } |
559 | else | |
3280af22 | 560 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
561 | |
562 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
563 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
564 | = SvPVX(PL_linestr); | |
3280af22 | 565 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
566 | |
567 | /* Close the filehandle. Could be from -P preprocessor, | |
568 | * STDIN, or a regular file. If we were reading code from | |
569 | * STDIN (because the commandline held no -e or filename) | |
570 | * then we don't close it, we reset it so the code can | |
571 | * read from STDIN too. | |
572 | */ | |
573 | ||
3280af22 NIS |
574 | if (PL_preprocess && !PL_in_eval) |
575 | (void)PerlProc_pclose(PL_rsfp); | |
576 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
577 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 578 | else |
3280af22 NIS |
579 | (void)PerlIO_close(PL_rsfp); |
580 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
581 | return s; |
582 | } | |
ffb4593c NT |
583 | |
584 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
585 | /* make corresponding updates to old pointers, for yyerror() */ |
586 | oldprevlen = PL_oldbufptr - PL_bufend; | |
587 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
588 | if (PL_last_uni) | |
589 | oldunilen = PL_last_uni - PL_bufend; | |
590 | if (PL_last_lop) | |
591 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
592 | PL_linestart = PL_bufptr = s + prevlen; |
593 | PL_bufend = s + SvCUR(PL_linestr); | |
594 | s = PL_bufptr; | |
09bef843 SB |
595 | PL_oldbufptr = s + oldprevlen; |
596 | PL_oldoldbufptr = s + oldoldprevlen; | |
597 | if (PL_last_uni) | |
598 | PL_last_uni = s + oldunilen; | |
599 | if (PL_last_lop) | |
600 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 601 | incline(s); |
ffb4593c NT |
602 | |
603 | /* debugger active and we're not compiling the debugger code, | |
604 | * so store the line into the debugger's array of lines | |
605 | */ | |
3280af22 | 606 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
607 | SV *sv = NEWSV(85,0); |
608 | ||
609 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 610 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
57843af0 | 611 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 612 | } |
463ee0b2 | 613 | } |
a687059c | 614 | } |
378cc40b | 615 | |
ffb4593c NT |
616 | /* |
617 | * S_check_uni | |
618 | * Check the unary operators to ensure there's no ambiguity in how they're | |
619 | * used. An ambiguous piece of code would be: | |
620 | * rand + 5 | |
621 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
622 | * the +5 is its argument. | |
623 | */ | |
624 | ||
76e3520e | 625 | STATIC void |
cea2e8a9 | 626 | S_check_uni(pTHX) |
ba106d47 | 627 | { |
2f3197b3 | 628 | char *s; |
a0d0e21e | 629 | char *t; |
0453d815 | 630 | dTHR; |
2f3197b3 | 631 | |
3280af22 | 632 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 633 | return; |
3280af22 NIS |
634 | while (isSPACE(*PL_last_uni)) |
635 | PL_last_uni++; | |
834a4ddd | 636 | for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ; |
3280af22 | 637 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 638 | return; |
0453d815 | 639 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 640 | char ch = *s; |
0453d815 PM |
641 | *s = '\0'; |
642 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
643 | "Warning: Use of \"%s\" without parens is ambiguous", | |
644 | PL_last_uni); | |
645 | *s = ch; | |
646 | } | |
2f3197b3 LW |
647 | } |
648 | ||
ffb4593c NT |
649 | /* workaround to replace the UNI() macro with a function. Only the |
650 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
651 | * source indicate Microport Unix might need it too. | |
652 | */ | |
653 | ||
ffed7fef LW |
654 | #ifdef CRIPPLED_CC |
655 | ||
656 | #undef UNI | |
ffed7fef | 657 | #define UNI(f) return uni(f,s) |
ffed7fef | 658 | |
76e3520e | 659 | STATIC int |
cea2e8a9 | 660 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
661 | { |
662 | yylval.ival = f; | |
3280af22 NIS |
663 | PL_expect = XTERM; |
664 | PL_bufptr = s; | |
8f872242 NIS |
665 | PL_last_uni = PL_oldbufptr; |
666 | PL_last_lop_op = f; | |
ffed7fef LW |
667 | if (*s == '(') |
668 | return FUNC1; | |
669 | s = skipspace(s); | |
670 | if (*s == '(') | |
671 | return FUNC1; | |
672 | else | |
673 | return UNIOP; | |
674 | } | |
675 | ||
a0d0e21e LW |
676 | #endif /* CRIPPLED_CC */ |
677 | ||
ffb4593c NT |
678 | /* |
679 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
680 | * with a subroutine, S_lop() for which LOP is just another name. | |
681 | */ | |
682 | ||
a0d0e21e LW |
683 | #define LOP(f,x) return lop(f,x,s) |
684 | ||
ffb4593c NT |
685 | /* |
686 | * S_lop | |
687 | * Build a list operator (or something that might be one). The rules: | |
688 | * - if we have a next token, then it's a list operator [why?] | |
689 | * - if the next thing is an opening paren, then it's a function | |
690 | * - else it's a list operator | |
691 | */ | |
692 | ||
76e3520e | 693 | STATIC I32 |
a0be28da | 694 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 695 | { |
0f15f207 | 696 | dTHR; |
79072805 | 697 | yylval.ival = f; |
35c8bce7 | 698 | CLINE; |
3280af22 NIS |
699 | PL_expect = x; |
700 | PL_bufptr = s; | |
701 | PL_last_lop = PL_oldbufptr; | |
702 | PL_last_lop_op = f; | |
703 | if (PL_nexttoke) | |
a0d0e21e | 704 | return LSTOP; |
79072805 LW |
705 | if (*s == '(') |
706 | return FUNC; | |
707 | s = skipspace(s); | |
708 | if (*s == '(') | |
709 | return FUNC; | |
710 | else | |
711 | return LSTOP; | |
712 | } | |
713 | ||
ffb4593c NT |
714 | /* |
715 | * S_force_next | |
9cbb5ea2 | 716 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 717 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
718 | * to know what token to return the next time the lexer is called. Caller |
719 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
720 | * handles the token correctly. | |
ffb4593c NT |
721 | */ |
722 | ||
76e3520e | 723 | STATIC void |
cea2e8a9 | 724 | S_force_next(pTHX_ I32 type) |
79072805 | 725 | { |
3280af22 NIS |
726 | PL_nexttype[PL_nexttoke] = type; |
727 | PL_nexttoke++; | |
728 | if (PL_lex_state != LEX_KNOWNEXT) { | |
729 | PL_lex_defer = PL_lex_state; | |
730 | PL_lex_expect = PL_expect; | |
731 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
732 | } |
733 | } | |
734 | ||
ffb4593c NT |
735 | /* |
736 | * S_force_word | |
737 | * When the lexer knows the next thing is a word (for instance, it has | |
738 | * just seen -> and it knows that the next char is a word char, then | |
739 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
740 | * | |
741 | * Arguments: | |
b1b65b59 | 742 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
743 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
744 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
745 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
746 | * int allow_pack : if true, : characters will also be allowed (require, | |
747 | * use, etc. do this) | |
9cbb5ea2 | 748 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
749 | */ |
750 | ||
76e3520e | 751 | STATIC char * |
cea2e8a9 | 752 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 753 | { |
463ee0b2 LW |
754 | register char *s; |
755 | STRLEN len; | |
756 | ||
757 | start = skipspace(start); | |
758 | s = start; | |
834a4ddd | 759 | if (isIDFIRST_lazy(s) || |
a0d0e21e | 760 | (allow_pack && *s == ':') || |
15f0808c | 761 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 762 | { |
3280af22 NIS |
763 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
764 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
765 | return start; |
766 | if (token == METHOD) { | |
767 | s = skipspace(s); | |
768 | if (*s == '(') | |
3280af22 | 769 | PL_expect = XTERM; |
463ee0b2 | 770 | else { |
3280af22 | 771 | PL_expect = XOPERATOR; |
463ee0b2 | 772 | } |
79072805 | 773 | } |
3280af22 NIS |
774 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
775 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
776 | force_next(token); |
777 | } | |
778 | return s; | |
779 | } | |
780 | ||
ffb4593c NT |
781 | /* |
782 | * S_force_ident | |
9cbb5ea2 | 783 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
784 | * text only contains the "foo" portion. The first argument is a pointer |
785 | * to the "foo", and the second argument is the type symbol to prefix. | |
786 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 787 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
788 | */ |
789 | ||
76e3520e | 790 | STATIC void |
cea2e8a9 | 791 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
792 | { |
793 | if (s && *s) { | |
11343788 | 794 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 795 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 796 | force_next(WORD); |
748a9306 | 797 | if (kind) { |
e858de61 | 798 | dTHR; /* just for in_eval */ |
11343788 | 799 | o->op_private = OPpCONST_ENTERED; |
55497cff | 800 | /* XXX see note in pp_entereval() for why we forgo typo |
801 | warnings if the symbol must be introduced in an eval. | |
802 | GSAR 96-10-12 */ | |
3280af22 | 803 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
804 | kind == '$' ? SVt_PV : |
805 | kind == '@' ? SVt_PVAV : | |
806 | kind == '%' ? SVt_PVHV : | |
807 | SVt_PVGV | |
808 | ); | |
748a9306 | 809 | } |
79072805 LW |
810 | } |
811 | } | |
812 | ||
ffb4593c NT |
813 | /* |
814 | * S_force_version | |
815 | * Forces the next token to be a version number. | |
816 | */ | |
817 | ||
76e3520e | 818 | STATIC char * |
cea2e8a9 | 819 | S_force_version(pTHX_ char *s) |
89bfa8cd | 820 | { |
821 | OP *version = Nullop; | |
822 | ||
823 | s = skipspace(s); | |
824 | ||
a7cb1f99 GS |
825 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
826 | char *d = s; | |
827 | if (*d == 'v') | |
828 | d++; | |
829 | for (; isDIGIT(*d) || *d == '_' || *d == '.'; d++); | |
830 | if ((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { | |
89bfa8cd | 831 | s = scan_num(s); |
832 | /* real VERSION number -- GBARR */ | |
833 | version = yylval.opval; | |
834 | } | |
835 | } | |
836 | ||
837 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 838 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 839 | force_next(WORD); |
840 | ||
841 | return (s); | |
842 | } | |
843 | ||
ffb4593c NT |
844 | /* |
845 | * S_tokeq | |
846 | * Tokenize a quoted string passed in as an SV. It finds the next | |
847 | * chunk, up to end of string or a backslash. It may make a new | |
848 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
849 | * turns \\ into \. | |
850 | */ | |
851 | ||
76e3520e | 852 | STATIC SV * |
cea2e8a9 | 853 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
854 | { |
855 | register char *s; | |
856 | register char *send; | |
857 | register char *d; | |
b3ac6de7 IZ |
858 | STRLEN len = 0; |
859 | SV *pv = sv; | |
79072805 LW |
860 | |
861 | if (!SvLEN(sv)) | |
b3ac6de7 | 862 | goto finish; |
79072805 | 863 | |
a0d0e21e | 864 | s = SvPV_force(sv, len); |
748a9306 | 865 | if (SvIVX(sv) == -1) |
b3ac6de7 | 866 | goto finish; |
463ee0b2 | 867 | send = s + len; |
79072805 LW |
868 | while (s < send && *s != '\\') |
869 | s++; | |
870 | if (s == send) | |
b3ac6de7 | 871 | goto finish; |
79072805 | 872 | d = s; |
3280af22 | 873 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 874 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
875 | while (s < send) { |
876 | if (*s == '\\') { | |
a0d0e21e | 877 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
878 | s++; /* all that, just for this */ |
879 | } | |
880 | *d++ = *s++; | |
881 | } | |
882 | *d = '\0'; | |
463ee0b2 | 883 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 884 | finish: |
3280af22 | 885 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 886 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
887 | return sv; |
888 | } | |
889 | ||
ffb4593c NT |
890 | /* |
891 | * Now come three functions related to double-quote context, | |
892 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
893 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
894 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
895 | * to handle functions and concatenation. | |
896 | * They assume that whoever calls them will be setting up a fake | |
897 | * join call, because each subthing puts a ',' after it. This lets | |
898 | * "lower \luPpEr" | |
899 | * become | |
900 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
901 | * | |
902 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
903 | * arguments and join's arguments are created or not). | |
904 | */ | |
905 | ||
906 | /* | |
907 | * S_sublex_start | |
908 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
909 | * | |
910 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
911 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
912 | * | |
913 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
914 | * | |
915 | * Everything else becomes a FUNC. | |
916 | * | |
917 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
918 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
919 | * call to S_sublex_push(). | |
920 | */ | |
921 | ||
76e3520e | 922 | STATIC I32 |
cea2e8a9 | 923 | S_sublex_start(pTHX) |
79072805 LW |
924 | { |
925 | register I32 op_type = yylval.ival; | |
79072805 LW |
926 | |
927 | if (op_type == OP_NULL) { | |
3280af22 NIS |
928 | yylval.opval = PL_lex_op; |
929 | PL_lex_op = Nullop; | |
79072805 LW |
930 | return THING; |
931 | } | |
932 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 933 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
934 | |
935 | if (SvTYPE(sv) == SVt_PVIV) { | |
936 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
937 | STRLEN len; | |
938 | char *p; | |
939 | SV *nsv; | |
940 | ||
941 | p = SvPV(sv, len); | |
79cb57f6 | 942 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
943 | SvREFCNT_dec(sv); |
944 | sv = nsv; | |
945 | } | |
946 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 947 | PL_lex_stuff = Nullsv; |
79072805 LW |
948 | return THING; |
949 | } | |
950 | ||
3280af22 NIS |
951 | PL_sublex_info.super_state = PL_lex_state; |
952 | PL_sublex_info.sub_inwhat = op_type; | |
953 | PL_sublex_info.sub_op = PL_lex_op; | |
954 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 955 | |
3280af22 NIS |
956 | PL_expect = XTERM; |
957 | if (PL_lex_op) { | |
958 | yylval.opval = PL_lex_op; | |
959 | PL_lex_op = Nullop; | |
55497cff | 960 | return PMFUNC; |
961 | } | |
962 | else | |
963 | return FUNC; | |
964 | } | |
965 | ||
ffb4593c NT |
966 | /* |
967 | * S_sublex_push | |
968 | * Create a new scope to save the lexing state. The scope will be | |
969 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
970 | * to the uc, lc, etc. found before. | |
971 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
972 | */ | |
973 | ||
76e3520e | 974 | STATIC I32 |
cea2e8a9 | 975 | S_sublex_push(pTHX) |
55497cff | 976 | { |
0f15f207 | 977 | dTHR; |
f46d017c | 978 | ENTER; |
55497cff | 979 | |
3280af22 NIS |
980 | PL_lex_state = PL_sublex_info.super_state; |
981 | SAVEI32(PL_lex_dojoin); | |
982 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
983 | SAVEI32(PL_lex_casemods); |
984 | SAVEI32(PL_lex_starts); | |
985 | SAVEI32(PL_lex_state); | |
7766f137 | 986 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 987 | SAVEI32(PL_lex_inwhat); |
57843af0 | 988 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
989 | SAVEPPTR(PL_bufptr); |
990 | SAVEPPTR(PL_oldbufptr); | |
991 | SAVEPPTR(PL_oldoldbufptr); | |
992 | SAVEPPTR(PL_linestart); | |
993 | SAVESPTR(PL_linestr); | |
994 | SAVEPPTR(PL_lex_brackstack); | |
995 | SAVEPPTR(PL_lex_casestack); | |
996 | ||
997 | PL_linestr = PL_lex_stuff; | |
998 | PL_lex_stuff = Nullsv; | |
999 | ||
9cbb5ea2 GS |
1000 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1001 | = SvPVX(PL_linestr); | |
3280af22 NIS |
1002 | PL_bufend += SvCUR(PL_linestr); |
1003 | SAVEFREESV(PL_linestr); | |
1004 | ||
1005 | PL_lex_dojoin = FALSE; | |
1006 | PL_lex_brackets = 0; | |
3280af22 NIS |
1007 | New(899, PL_lex_brackstack, 120, char); |
1008 | New(899, PL_lex_casestack, 12, char); | |
1009 | SAVEFREEPV(PL_lex_brackstack); | |
1010 | SAVEFREEPV(PL_lex_casestack); | |
1011 | PL_lex_casemods = 0; | |
1012 | *PL_lex_casestack = '\0'; | |
1013 | PL_lex_starts = 0; | |
1014 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1015 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1016 | |
1017 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1018 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1019 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1020 | else |
3280af22 | 1021 | PL_lex_inpat = Nullop; |
79072805 | 1022 | |
55497cff | 1023 | return '('; |
79072805 LW |
1024 | } |
1025 | ||
ffb4593c NT |
1026 | /* |
1027 | * S_sublex_done | |
1028 | * Restores lexer state after a S_sublex_push. | |
1029 | */ | |
1030 | ||
76e3520e | 1031 | STATIC I32 |
cea2e8a9 | 1032 | S_sublex_done(pTHX) |
79072805 | 1033 | { |
3280af22 NIS |
1034 | if (!PL_lex_starts++) { |
1035 | PL_expect = XOPERATOR; | |
79cb57f6 | 1036 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1037 | return THING; |
1038 | } | |
1039 | ||
3280af22 NIS |
1040 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1041 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1042 | return yylex(); |
79072805 LW |
1043 | } |
1044 | ||
ffb4593c | 1045 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1046 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1047 | PL_linestr = PL_lex_repl; | |
1048 | PL_lex_inpat = 0; | |
1049 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1050 | PL_bufend += SvCUR(PL_linestr); | |
1051 | SAVEFREESV(PL_linestr); | |
1052 | PL_lex_dojoin = FALSE; | |
1053 | PL_lex_brackets = 0; | |
3280af22 NIS |
1054 | PL_lex_casemods = 0; |
1055 | *PL_lex_casestack = '\0'; | |
1056 | PL_lex_starts = 0; | |
25da4f38 | 1057 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1058 | PL_lex_state = LEX_INTERPNORMAL; |
1059 | PL_lex_starts++; | |
e9fa98b2 HS |
1060 | /* we don't clear PL_lex_repl here, so that we can check later |
1061 | whether this is an evalled subst; that means we rely on the | |
1062 | logic to ensure sublex_done() is called again only via the | |
1063 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1064 | } |
e9fa98b2 | 1065 | else { |
3280af22 | 1066 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1067 | PL_lex_repl = Nullsv; |
1068 | } | |
79072805 | 1069 | return ','; |
ffed7fef LW |
1070 | } |
1071 | else { | |
f46d017c | 1072 | LEAVE; |
3280af22 NIS |
1073 | PL_bufend = SvPVX(PL_linestr); |
1074 | PL_bufend += SvCUR(PL_linestr); | |
1075 | PL_expect = XOPERATOR; | |
09bef843 | 1076 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1077 | return ')'; |
ffed7fef LW |
1078 | } |
1079 | } | |
1080 | ||
02aa26ce NT |
1081 | /* |
1082 | scan_const | |
1083 | ||
1084 | Extracts a pattern, double-quoted string, or transliteration. This | |
1085 | is terrifying code. | |
1086 | ||
3280af22 NIS |
1087 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1088 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1089 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1090 | ||
9b599b2a GS |
1091 | Returns a pointer to the character scanned up to. Iff this is |
1092 | advanced from the start pointer supplied (ie if anything was | |
1093 | successfully parsed), will leave an OP for the substring scanned | |
1094 | in yylval. Caller must intuit reason for not parsing further | |
1095 | by looking at the next characters herself. | |
1096 | ||
02aa26ce NT |
1097 | In patterns: |
1098 | backslashes: | |
1099 | double-quoted style: \r and \n | |
1100 | regexp special ones: \D \s | |
1101 | constants: \x3 | |
1102 | backrefs: \1 (deprecated in substitution replacements) | |
1103 | case and quoting: \U \Q \E | |
1104 | stops on @ and $, but not for $ as tail anchor | |
1105 | ||
1106 | In transliterations: | |
1107 | characters are VERY literal, except for - not at the start or end | |
1108 | of the string, which indicates a range. scan_const expands the | |
1109 | range to the full set of intermediate characters. | |
1110 | ||
1111 | In double-quoted strings: | |
1112 | backslashes: | |
1113 | double-quoted style: \r and \n | |
1114 | constants: \x3 | |
1115 | backrefs: \1 (deprecated) | |
1116 | case and quoting: \U \Q \E | |
1117 | stops on @ and $ | |
1118 | ||
1119 | scan_const does *not* construct ops to handle interpolated strings. | |
1120 | It stops processing as soon as it finds an embedded $ or @ variable | |
1121 | and leaves it to the caller to work out what's going on. | |
1122 | ||
1123 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1124 | ||
1125 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1126 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1127 | followed by one of ")| \n\t" | |
1128 | ||
1129 | \1 (backreferences) are turned into $1 | |
1130 | ||
1131 | The structure of the code is | |
1132 | while (there's a character to process) { | |
1133 | handle transliteration ranges | |
1134 | skip regexp comments | |
1135 | skip # initiated comments in //x patterns | |
1136 | check for embedded @foo | |
1137 | check for embedded scalars | |
1138 | if (backslash) { | |
1139 | leave intact backslashes from leave (below) | |
1140 | deprecate \1 in strings and sub replacements | |
1141 | handle string-changing backslashes \l \U \Q \E, etc. | |
1142 | switch (what was escaped) { | |
1143 | handle - in a transliteration (becomes a literal -) | |
1144 | handle \132 octal characters | |
1145 | handle 0x15 hex characters | |
1146 | handle \cV (control V) | |
1147 | handle printf backslashes (\f, \r, \n, etc) | |
1148 | } (end switch) | |
1149 | } (end if backslash) | |
1150 | } (end while character to read) | |
1151 | ||
1152 | */ | |
1153 | ||
76e3520e | 1154 | STATIC char * |
cea2e8a9 | 1155 | S_scan_const(pTHX_ char *start) |
79072805 | 1156 | { |
3280af22 | 1157 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1158 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1159 | register char *s = start; /* start of the constant */ | |
1160 | register char *d = SvPVX(sv); /* destination for copies */ | |
1161 | bool dorange = FALSE; /* are we in a translit range? */ | |
1162 | I32 len; /* ? */ | |
ac2262e3 | 1163 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1164 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1165 | : UTF; | |
ac2262e3 | 1166 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1167 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1168 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1169 | : UTF; |
dff6d3cd | 1170 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1171 | PL_lex_inpat |
4a2d328f | 1172 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1173 | : ""; |
79072805 LW |
1174 | |
1175 | while (s < send || dorange) { | |
02aa26ce | 1176 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1177 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1178 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1179 | if (dorange) { |
02aa26ce | 1180 | I32 i; /* current expanded character */ |
8ada0baa | 1181 | I32 min; /* first character in range */ |
02aa26ce NT |
1182 | I32 max; /* last character in range */ |
1183 | ||
1184 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1185 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1186 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1187 | d -= 2; /* eat the first char and the - */ |
1188 | ||
8ada0baa JH |
1189 | min = (U8)*d; /* first char in range */ |
1190 | max = (U8)d[1]; /* last char in range */ | |
1191 | ||
1192 | #ifndef ASCIIish | |
1193 | if ((isLOWER(min) && isLOWER(max)) || | |
1194 | (isUPPER(min) && isUPPER(max))) { | |
1195 | if (isLOWER(min)) { | |
1196 | for (i = min; i <= max; i++) | |
1197 | if (isLOWER(i)) | |
1198 | *d++ = i; | |
1199 | } else { | |
1200 | for (i = min; i <= max; i++) | |
1201 | if (isUPPER(i)) | |
1202 | *d++ = i; | |
1203 | } | |
1204 | } | |
1205 | else | |
1206 | #endif | |
1207 | for (i = min; i <= max; i++) | |
1208 | *d++ = i; | |
02aa26ce NT |
1209 | |
1210 | /* mark the range as done, and continue */ | |
79072805 LW |
1211 | dorange = FALSE; |
1212 | continue; | |
1213 | } | |
02aa26ce NT |
1214 | |
1215 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1216 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1217 | if (utf) { |
a176fa2a | 1218 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1219 | s++; |
1220 | continue; | |
1221 | } | |
79072805 LW |
1222 | dorange = TRUE; |
1223 | s++; | |
1224 | } | |
1225 | } | |
02aa26ce NT |
1226 | |
1227 | /* if we get here, we're not doing a transliteration */ | |
1228 | ||
0f5d15d6 IZ |
1229 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1230 | except for the last char, which will be done separately. */ | |
3280af22 | 1231 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1232 | if (s[2] == '#') { |
1233 | while (s < send && *s != ')') | |
1234 | *d++ = *s++; | |
0f5d15d6 IZ |
1235 | } else if (s[2] == '{' |
1236 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1237 | I32 count = 1; |
0f5d15d6 | 1238 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1239 | char c; |
1240 | ||
d9f97599 GS |
1241 | while (count && (c = *regparse)) { |
1242 | if (c == '\\' && regparse[1]) | |
1243 | regparse++; | |
cc6b7395 IZ |
1244 | else if (c == '{') |
1245 | count++; | |
1246 | else if (c == '}') | |
1247 | count--; | |
d9f97599 | 1248 | regparse++; |
cc6b7395 | 1249 | } |
5bdf89e7 IZ |
1250 | if (*regparse != ')') { |
1251 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1252 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1253 | } |
0f5d15d6 | 1254 | while (s < regparse) |
cc6b7395 IZ |
1255 | *d++ = *s++; |
1256 | } | |
748a9306 | 1257 | } |
02aa26ce NT |
1258 | |
1259 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1260 | else if (*s == '#' && PL_lex_inpat && |
1261 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1262 | while (s+1 < send && *s != '\n') |
1263 | *d++ = *s++; | |
1264 | } | |
02aa26ce NT |
1265 | |
1266 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
834a4ddd | 1267 | else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1]))) |
79072805 | 1268 | break; |
02aa26ce NT |
1269 | |
1270 | /* check for embedded scalars. only stop if we're sure it's a | |
1271 | variable. | |
1272 | */ | |
79072805 | 1273 | else if (*s == '$') { |
3280af22 | 1274 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1275 | break; |
c277df42 | 1276 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1277 | break; /* in regexp, $ might be tail anchor */ |
1278 | } | |
02aa26ce | 1279 | |
a0ed51b3 LW |
1280 | /* (now in tr/// code again) */ |
1281 | ||
d008e5eb GS |
1282 | if (*s & 0x80 && thisutf) { |
1283 | dTHR; /* only for ckWARN */ | |
1284 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1285 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1286 | if (len) { |
1287 | while (len--) | |
1288 | *d++ = *s++; | |
1289 | continue; | |
1290 | } | |
a0ed51b3 LW |
1291 | } |
1292 | } | |
1293 | ||
02aa26ce | 1294 | /* backslashes */ |
79072805 LW |
1295 | if (*s == '\\' && s+1 < send) { |
1296 | s++; | |
02aa26ce NT |
1297 | |
1298 | /* some backslashes we leave behind */ | |
c9f97d15 | 1299 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1300 | *d++ = '\\'; |
1301 | *d++ = *s++; | |
1302 | continue; | |
1303 | } | |
02aa26ce NT |
1304 | |
1305 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1306 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1307 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1308 | { |
d008e5eb | 1309 | dTHR; /* only for ckWARN */ |
599cee73 | 1310 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1311 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1312 | *--s = '$'; |
1313 | break; | |
1314 | } | |
02aa26ce NT |
1315 | |
1316 | /* string-change backslash escapes */ | |
3280af22 | 1317 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1318 | --s; |
1319 | break; | |
1320 | } | |
02aa26ce NT |
1321 | |
1322 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1323 | switch (*s) { |
02aa26ce NT |
1324 | |
1325 | /* quoted - in transliterations */ | |
79072805 | 1326 | case '-': |
3280af22 | 1327 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1328 | *d++ = *s++; |
1329 | continue; | |
1330 | } | |
1331 | /* FALL THROUGH */ | |
1332 | default: | |
11b8faa4 JH |
1333 | { |
1334 | dTHR; | |
1335 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) | |
cea2e8a9 | 1336 | Perl_warner(aTHX_ WARN_UNSAFE, |
11b8faa4 JH |
1337 | "Unrecognized escape \\%c passed through", |
1338 | *s); | |
1339 | /* default action is to copy the quoted character */ | |
1340 | *d++ = *s++; | |
1341 | continue; | |
1342 | } | |
02aa26ce NT |
1343 | |
1344 | /* \132 indicates an octal constant */ | |
79072805 LW |
1345 | case '0': case '1': case '2': case '3': |
1346 | case '4': case '5': case '6': case '7': | |
dff6d3cd | 1347 | *d++ = (char)scan_oct(s, 3, &len); |
79072805 LW |
1348 | s += len; |
1349 | continue; | |
02aa26ce NT |
1350 | |
1351 | /* \x24 indicates a hex constant */ | |
79072805 | 1352 | case 'x': |
a0ed51b3 LW |
1353 | ++s; |
1354 | if (*s == '{') { | |
1355 | char* e = strchr(s, '}'); | |
1356 | ||
adaeee49 | 1357 | if (!e) { |
a0ed51b3 | 1358 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1359 | e = s; |
1360 | } | |
d008e5eb GS |
1361 | if (!utf) { |
1362 | dTHR; | |
1363 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1364 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1365 | "Use of \\x{} without utf8 declaration"); |
1366 | } | |
a0ed51b3 | 1367 | /* note: utf always shorter than hex */ |
dfe13c55 | 1368 | d = (char*)uv_to_utf8((U8*)d, |
dff6d3cd | 1369 | (UV)scan_hex(s + 1, e - s - 1, &len)); |
a0ed51b3 | 1370 | s = e + 1; |
a0ed51b3 LW |
1371 | } |
1372 | else { | |
1373 | UV uv = (UV)scan_hex(s, 2, &len); | |
1374 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1375 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1376 | { | |
dfe13c55 | 1377 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1378 | } |
1379 | else { | |
d008e5eb GS |
1380 | if (uv >= 127 && UTF) { |
1381 | dTHR; | |
1382 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1383 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb | 1384 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", |
894356b3 | 1385 | (int)len,s,(int)len,s); |
d008e5eb | 1386 | } |
a0ed51b3 LW |
1387 | *d++ = (char)uv; |
1388 | } | |
1389 | s += len; | |
1390 | } | |
79072805 | 1391 | continue; |
02aa26ce | 1392 | |
4a2d328f IZ |
1393 | /* \N{latin small letter a} is a named character */ |
1394 | case 'N': | |
423cee85 JH |
1395 | ++s; |
1396 | if (*s == '{') { | |
1397 | char* e = strchr(s, '}'); | |
1398 | HV *hv; | |
1399 | SV **svp; | |
1400 | SV *res, *cv; | |
1401 | STRLEN len; | |
1402 | char *str; | |
1403 | char *why = Nullch; | |
1404 | ||
1405 | if (!e) { | |
5777a3f7 | 1406 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1407 | e = s - 1; |
1408 | goto cont_scan; | |
1409 | } | |
1410 | res = newSVpvn(s + 1, e - s - 1); | |
1411 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1412 | res, Nullsv, "\\N{...}" ); |
423cee85 JH |
1413 | str = SvPV(res,len); |
1414 | if (len > e - s + 4) { | |
1415 | char *odest = SvPVX(sv); | |
1416 | ||
1417 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1418 | d = SvPVX(sv) + (d - odest); | |
1419 | } | |
1420 | Copy(str, d, len, char); | |
1421 | d += len; | |
1422 | SvREFCNT_dec(res); | |
1423 | cont_scan: | |
1424 | s = e + 1; | |
1425 | } | |
1426 | else | |
5777a3f7 | 1427 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1428 | continue; |
1429 | ||
02aa26ce | 1430 | /* \c is a control character */ |
79072805 LW |
1431 | case 'c': |
1432 | s++; | |
9d116dd7 JH |
1433 | #ifdef EBCDIC |
1434 | *d = *s++; | |
1435 | if (isLOWER(*d)) | |
1436 | *d = toUPPER(*d); | |
1437 | *d++ = toCTRL(*d); | |
1438 | #else | |
bbce6d69 | 1439 | len = *s++; |
1440 | *d++ = toCTRL(len); | |
9d116dd7 | 1441 | #endif |
79072805 | 1442 | continue; |
02aa26ce NT |
1443 | |
1444 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1445 | case 'b': |
1446 | *d++ = '\b'; | |
1447 | break; | |
1448 | case 'n': | |
1449 | *d++ = '\n'; | |
1450 | break; | |
1451 | case 'r': | |
1452 | *d++ = '\r'; | |
1453 | break; | |
1454 | case 'f': | |
1455 | *d++ = '\f'; | |
1456 | break; | |
1457 | case 't': | |
1458 | *d++ = '\t'; | |
1459 | break; | |
34a3fe2a PP |
1460 | #ifdef EBCDIC |
1461 | case 'e': | |
1462 | *d++ = '\047'; /* CP 1047 */ | |
1463 | break; | |
1464 | case 'a': | |
1465 | *d++ = '\057'; /* CP 1047 */ | |
1466 | break; | |
1467 | #else | |
79072805 LW |
1468 | case 'e': |
1469 | *d++ = '\033'; | |
1470 | break; | |
1471 | case 'a': | |
1472 | *d++ = '\007'; | |
1473 | break; | |
34a3fe2a | 1474 | #endif |
02aa26ce NT |
1475 | } /* end switch */ |
1476 | ||
79072805 LW |
1477 | s++; |
1478 | continue; | |
02aa26ce NT |
1479 | } /* end if (backslash) */ |
1480 | ||
79072805 | 1481 | *d++ = *s++; |
02aa26ce NT |
1482 | } /* while loop to process each character */ |
1483 | ||
1484 | /* terminate the string and set up the sv */ | |
79072805 | 1485 | *d = '\0'; |
463ee0b2 | 1486 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1487 | SvPOK_on(sv); |
1488 | ||
02aa26ce | 1489 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1490 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1491 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1492 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1493 | } |
02aa26ce | 1494 | |
9b599b2a | 1495 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1496 | if (s > PL_bufptr) { |
1497 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1498 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1499 | sv, Nullsv, |
3280af22 | 1500 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1501 | ? "tr" |
3280af22 | 1502 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1503 | ? "s" |
1504 | : "qq"))); | |
79072805 | 1505 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1506 | } else |
8990e307 | 1507 | SvREFCNT_dec(sv); |
79072805 LW |
1508 | return s; |
1509 | } | |
1510 | ||
ffb4593c NT |
1511 | /* S_intuit_more |
1512 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1513 | * FALSE otherwise. | |
ffb4593c NT |
1514 | * |
1515 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1516 | * | |
1517 | * ->[ and ->{ return TRUE | |
1518 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1519 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1520 | * if we're in a pattern and the first char is a { | |
1521 | * {4,5} (any digits around the comma) returns FALSE | |
1522 | * if we're in a pattern and the first char is a [ | |
1523 | * [] returns FALSE | |
1524 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1525 | * character class or not. It has to deal with things like | |
1526 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1527 | * anything else returns TRUE | |
1528 | */ | |
1529 | ||
9cbb5ea2 GS |
1530 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1531 | ||
76e3520e | 1532 | STATIC int |
cea2e8a9 | 1533 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1534 | { |
3280af22 | 1535 | if (PL_lex_brackets) |
79072805 LW |
1536 | return TRUE; |
1537 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1538 | return TRUE; | |
1539 | if (*s != '{' && *s != '[') | |
1540 | return FALSE; | |
3280af22 | 1541 | if (!PL_lex_inpat) |
79072805 LW |
1542 | return TRUE; |
1543 | ||
1544 | /* In a pattern, so maybe we have {n,m}. */ | |
1545 | if (*s == '{') { | |
1546 | s++; | |
1547 | if (!isDIGIT(*s)) | |
1548 | return TRUE; | |
1549 | while (isDIGIT(*s)) | |
1550 | s++; | |
1551 | if (*s == ',') | |
1552 | s++; | |
1553 | while (isDIGIT(*s)) | |
1554 | s++; | |
1555 | if (*s == '}') | |
1556 | return FALSE; | |
1557 | return TRUE; | |
1558 | ||
1559 | } | |
1560 | ||
1561 | /* On the other hand, maybe we have a character class */ | |
1562 | ||
1563 | s++; | |
1564 | if (*s == ']' || *s == '^') | |
1565 | return FALSE; | |
1566 | else { | |
ffb4593c | 1567 | /* this is terrifying, and it works */ |
79072805 LW |
1568 | int weight = 2; /* let's weigh the evidence */ |
1569 | char seen[256]; | |
f27ffc4a | 1570 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1571 | char *send = strchr(s,']'); |
3280af22 | 1572 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1573 | |
1574 | if (!send) /* has to be an expression */ | |
1575 | return TRUE; | |
1576 | ||
1577 | Zero(seen,256,char); | |
1578 | if (*s == '$') | |
1579 | weight -= 3; | |
1580 | else if (isDIGIT(*s)) { | |
1581 | if (s[1] != ']') { | |
1582 | if (isDIGIT(s[1]) && s[2] == ']') | |
1583 | weight -= 10; | |
1584 | } | |
1585 | else | |
1586 | weight -= 100; | |
1587 | } | |
1588 | for (; s < send; s++) { | |
1589 | last_un_char = un_char; | |
1590 | un_char = (unsigned char)*s; | |
1591 | switch (*s) { | |
1592 | case '@': | |
1593 | case '&': | |
1594 | case '$': | |
1595 | weight -= seen[un_char] * 10; | |
834a4ddd | 1596 | if (isALNUM_lazy(s+1)) { |
8903cb82 | 1597 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1598 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1599 | weight -= 100; |
1600 | else | |
1601 | weight -= 10; | |
1602 | } | |
1603 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1604 | strchr("[#!%*<>()-=",s[1])) { |
1605 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1606 | weight -= 10; |
1607 | else | |
1608 | weight -= 1; | |
1609 | } | |
1610 | break; | |
1611 | case '\\': | |
1612 | un_char = 254; | |
1613 | if (s[1]) { | |
93a17b20 | 1614 | if (strchr("wds]",s[1])) |
79072805 LW |
1615 | weight += 100; |
1616 | else if (seen['\''] || seen['"']) | |
1617 | weight += 1; | |
93a17b20 | 1618 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1619 | weight += 40; |
1620 | else if (isDIGIT(s[1])) { | |
1621 | weight += 40; | |
1622 | while (s[1] && isDIGIT(s[1])) | |
1623 | s++; | |
1624 | } | |
1625 | } | |
1626 | else | |
1627 | weight += 100; | |
1628 | break; | |
1629 | case '-': | |
1630 | if (s[1] == '\\') | |
1631 | weight += 50; | |
93a17b20 | 1632 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1633 | weight += 30; |
93a17b20 | 1634 | if (strchr("zZ79~",s[1])) |
79072805 | 1635 | weight += 30; |
f27ffc4a GS |
1636 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1637 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1638 | break; |
1639 | default: | |
93a17b20 | 1640 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1641 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1642 | char *d = tmpbuf; | |
1643 | while (isALPHA(*s)) | |
1644 | *d++ = *s++; | |
1645 | *d = '\0'; | |
1646 | if (keyword(tmpbuf, d - tmpbuf)) | |
1647 | weight -= 150; | |
1648 | } | |
1649 | if (un_char == last_un_char + 1) | |
1650 | weight += 5; | |
1651 | weight -= seen[un_char]; | |
1652 | break; | |
1653 | } | |
1654 | seen[un_char]++; | |
1655 | } | |
1656 | if (weight >= 0) /* probably a character class */ | |
1657 | return FALSE; | |
1658 | } | |
1659 | ||
1660 | return TRUE; | |
1661 | } | |
ffed7fef | 1662 | |
ffb4593c NT |
1663 | /* |
1664 | * S_intuit_method | |
1665 | * | |
1666 | * Does all the checking to disambiguate | |
1667 | * foo bar | |
1668 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1669 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1670 | * | |
1671 | * First argument is the stuff after the first token, e.g. "bar". | |
1672 | * | |
1673 | * Not a method if bar is a filehandle. | |
1674 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1675 | * Not a method if it's really "Foo $bar" | |
1676 | * Method if it's "foo $bar" | |
1677 | * Not a method if it's really "print foo $bar" | |
1678 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1679 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
1680 | * Not a method if bar is a filehandle or package, but is quotd with | |
1681 | * => | |
1682 | */ | |
1683 | ||
76e3520e | 1684 | STATIC int |
cea2e8a9 | 1685 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1686 | { |
1687 | char *s = start + (*start == '$'); | |
3280af22 | 1688 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1689 | STRLEN len; |
1690 | GV* indirgv; | |
1691 | ||
1692 | if (gv) { | |
b6c543e3 | 1693 | CV *cv; |
a0d0e21e LW |
1694 | if (GvIO(gv)) |
1695 | return 0; | |
b6c543e3 IZ |
1696 | if ((cv = GvCVu(gv))) { |
1697 | char *proto = SvPVX(cv); | |
1698 | if (proto) { | |
1699 | if (*proto == ';') | |
1700 | proto++; | |
1701 | if (*proto == '*') | |
1702 | return 0; | |
1703 | } | |
1704 | } else | |
a0d0e21e LW |
1705 | gv = 0; |
1706 | } | |
8903cb82 | 1707 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1708 | /* start is the beginning of the possible filehandle/object, |
1709 | * and s is the end of it | |
1710 | * tmpbuf is a copy of it | |
1711 | */ | |
1712 | ||
a0d0e21e | 1713 | if (*start == '$') { |
3280af22 | 1714 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1715 | return 0; |
1716 | s = skipspace(s); | |
3280af22 NIS |
1717 | PL_bufptr = start; |
1718 | PL_expect = XREF; | |
a0d0e21e LW |
1719 | return *s == '(' ? FUNCMETH : METHOD; |
1720 | } | |
1721 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1722 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1723 | len -= 2; | |
1724 | tmpbuf[len] = '\0'; | |
1725 | goto bare_package; | |
1726 | } | |
1727 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1728 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1729 | return 0; |
1730 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1731 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1732 | s = skipspace(s); |
3280af22 | 1733 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1734 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1735 | bare_package: |
3280af22 | 1736 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1737 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1738 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1739 | PL_expect = XTERM; | |
a0d0e21e | 1740 | force_next(WORD); |
3280af22 | 1741 | PL_bufptr = s; |
a0d0e21e LW |
1742 | return *s == '(' ? FUNCMETH : METHOD; |
1743 | } | |
1744 | } | |
1745 | return 0; | |
1746 | } | |
1747 | ||
ffb4593c NT |
1748 | /* |
1749 | * S_incl_perldb | |
1750 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1751 | * is set, it will return the contents of that, otherwise a | |
1752 | * compile-time require of perl5db.pl. | |
1753 | */ | |
1754 | ||
76e3520e | 1755 | STATIC char* |
cea2e8a9 | 1756 | S_incl_perldb(pTHX) |
a0d0e21e | 1757 | { |
3280af22 | 1758 | if (PL_perldb) { |
76e3520e | 1759 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1760 | |
1761 | if (pdb) | |
1762 | return pdb; | |
61bb5906 | 1763 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1764 | return "BEGIN { require 'perl5db.pl' }"; |
1765 | } | |
1766 | return ""; | |
1767 | } | |
1768 | ||
1769 | ||
16d20bd9 AD |
1770 | /* Encoded script support. filter_add() effectively inserts a |
1771 | * 'pre-processing' function into the current source input stream. | |
1772 | * Note that the filter function only applies to the current source file | |
1773 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1774 | * | |
1775 | * The datasv parameter (which may be NULL) can be used to pass | |
1776 | * private data to this instance of the filter. The filter function | |
1777 | * can recover the SV using the FILTER_DATA macro and use it to | |
1778 | * store private buffers and state information. | |
1779 | * | |
1780 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1781 | * and the IoDIRP field is used to store the function pointer, |
1782 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1783 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1784 | * private use must be set using malloc'd pointers. | |
1785 | */ | |
16d20bd9 AD |
1786 | |
1787 | SV * | |
864dbfa3 | 1788 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1789 | { |
f4c556ac GS |
1790 | if (!funcp) |
1791 | return Nullsv; | |
1792 | ||
3280af22 NIS |
1793 | if (!PL_rsfp_filters) |
1794 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1795 | if (!datasv) |
8c52afec | 1796 | datasv = NEWSV(255,0); |
16d20bd9 | 1797 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1798 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1799 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1800 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1801 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1802 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1803 | av_unshift(PL_rsfp_filters, 1); |
1804 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1805 | return(datasv); |
1806 | } | |
1807 | ||
1808 | ||
1809 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1810 | void |
864dbfa3 | 1811 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1812 | { |
e0c19803 | 1813 | SV *datasv; |
f4c556ac | 1814 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1815 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1816 | return; |
1817 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1818 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1819 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1820 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1821 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1822 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1823 | |
16d20bd9 AD |
1824 | return; |
1825 | } | |
1826 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1827 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1828 | } |
1829 | ||
1830 | ||
1831 | /* Invoke the n'th filter function for the current rsfp. */ | |
1832 | I32 | |
864dbfa3 | 1833 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1834 | |
1835 | ||
1836 | /* 0 = read one text line */ | |
a0d0e21e | 1837 | { |
16d20bd9 AD |
1838 | filter_t funcp; |
1839 | SV *datasv = NULL; | |
e50aee73 | 1840 | |
3280af22 | 1841 | if (!PL_rsfp_filters) |
16d20bd9 | 1842 | return -1; |
3280af22 | 1843 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1844 | /* Provide a default input filter to make life easy. */ |
1845 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1846 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1847 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1848 | if (maxlen) { |
1849 | /* Want a block */ | |
1850 | int len ; | |
1851 | int old_len = SvCUR(buf_sv) ; | |
1852 | ||
1853 | /* ensure buf_sv is large enough */ | |
1854 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1855 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1856 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1857 | return -1; /* error */ |
1858 | else | |
1859 | return 0 ; /* end of file */ | |
1860 | } | |
16d20bd9 AD |
1861 | SvCUR_set(buf_sv, old_len + len) ; |
1862 | } else { | |
1863 | /* Want a line */ | |
3280af22 NIS |
1864 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1865 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1866 | return -1; /* error */ |
1867 | else | |
1868 | return 0 ; /* end of file */ | |
1869 | } | |
16d20bd9 AD |
1870 | } |
1871 | return SvCUR(buf_sv); | |
1872 | } | |
1873 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1874 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1875 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1876 | "filter_read %d: skipped (filter deleted)\n", | |
1877 | idx)); | |
16d20bd9 AD |
1878 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1879 | } | |
1880 | /* Get function pointer hidden within datasv */ | |
1881 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1882 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1883 | "filter_read %d: via function %p (%s)\n", | |
1884 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1885 | /* Call function. The function is expected to */ |
1886 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1887 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1888 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1889 | } |
1890 | ||
76e3520e | 1891 | STATIC char * |
cea2e8a9 | 1892 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1893 | { |
c39cd008 | 1894 | #ifdef PERL_CR_FILTER |
3280af22 | 1895 | if (!PL_rsfp_filters) { |
c39cd008 | 1896 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1897 | } |
1898 | #endif | |
3280af22 | 1899 | if (PL_rsfp_filters) { |
16d20bd9 | 1900 | |
55497cff | 1901 | if (!append) |
1902 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1903 | if (FILTER_READ(0, sv, 0) > 0) |
1904 | return ( SvPVX(sv) ) ; | |
1905 | else | |
1906 | return Nullch ; | |
1907 | } | |
9d116dd7 | 1908 | else |
fd049845 | 1909 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1910 | } |
1911 | ||
1912 | ||
748a9306 LW |
1913 | #ifdef DEBUGGING |
1914 | static char* exp_name[] = | |
09bef843 SB |
1915 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1916 | "ATTRTERM", "TERMBLOCK" | |
1917 | }; | |
748a9306 | 1918 | #endif |
463ee0b2 | 1919 | |
02aa26ce NT |
1920 | /* |
1921 | yylex | |
1922 | ||
1923 | Works out what to call the token just pulled out of the input | |
1924 | stream. The yacc parser takes care of taking the ops we return and | |
1925 | stitching them into a tree. | |
1926 | ||
1927 | Returns: | |
1928 | PRIVATEREF | |
1929 | ||
1930 | Structure: | |
1931 | if read an identifier | |
1932 | if we're in a my declaration | |
1933 | croak if they tried to say my($foo::bar) | |
1934 | build the ops for a my() declaration | |
1935 | if it's an access to a my() variable | |
1936 | are we in a sort block? | |
1937 | croak if my($a); $a <=> $b | |
1938 | build ops for access to a my() variable | |
1939 | if in a dq string, and they've said @foo and we can't find @foo | |
1940 | croak | |
1941 | build ops for a bareword | |
1942 | if we already built the token before, use it. | |
1943 | */ | |
1944 | ||
864dbfa3 GS |
1945 | int |
1946 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 1947 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 1948 | #else |
cea2e8a9 | 1949 | Perl_yylex(pTHX) |
864dbfa3 | 1950 | #endif |
378cc40b | 1951 | { |
11343788 | 1952 | dTHR; |
79072805 | 1953 | register char *s; |
378cc40b | 1954 | register char *d; |
79072805 | 1955 | register I32 tmp; |
463ee0b2 | 1956 | STRLEN len; |
161b471a NIS |
1957 | GV *gv = Nullgv; |
1958 | GV **gvp = 0; | |
a687059c | 1959 | |
a1a0e61e TD |
1960 | #ifdef USE_PURE_BISON |
1961 | yylval_pointer = lvalp; | |
1962 | yychar_pointer = lcharp; | |
1963 | #endif | |
1964 | ||
02aa26ce | 1965 | /* check if there's an identifier for us to look at */ |
3280af22 | 1966 | if (PL_pending_ident) { |
02aa26ce | 1967 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1968 | char pit = PL_pending_ident; |
1969 | PL_pending_ident = 0; | |
bbce6d69 | 1970 | |
02aa26ce NT |
1971 | /* if we're in a my(), we can't allow dynamics here. |
1972 | $foo'bar has already been turned into $foo::bar, so | |
1973 | just check for colons. | |
1974 | ||
1975 | if it's a legal name, the OP is a PADANY. | |
1976 | */ | |
3280af22 | 1977 | if (PL_in_my) { |
77ca0c92 | 1978 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
1979 | if (strchr(PL_tokenbuf,':')) |
1980 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
1981 | "variable %s in \"our\"", | |
1982 | PL_tokenbuf)); | |
77ca0c92 LW |
1983 | tmp = pad_allocmy(PL_tokenbuf); |
1984 | } | |
1985 | else { | |
1986 | if (strchr(PL_tokenbuf,':')) | |
1987 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 1988 | |
77ca0c92 LW |
1989 | yylval.opval = newOP(OP_PADANY, 0); |
1990 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
1991 | return PRIVATEREF; | |
1992 | } | |
bbce6d69 | 1993 | } |
1994 | ||
02aa26ce NT |
1995 | /* |
1996 | build the ops for accesses to a my() variable. | |
1997 | ||
1998 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1999 | then used in a comparison. This catches most, but not | |
2000 | all cases. For instance, it catches | |
2001 | sort { my($a); $a <=> $b } | |
2002 | but not | |
2003 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2004 | (although why you'd do that is anyone's guess). | |
2005 | */ | |
2006 | ||
3280af22 | 2007 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2008 | #ifdef USE_THREADS |
54b9620d | 2009 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2010 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2011 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2012 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2013 | { |
2faa37cc | 2014 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2015 | yylval.opval->op_targ = tmp; |
2016 | return PRIVATEREF; | |
2017 | } | |
2018 | #endif /* USE_THREADS */ | |
3280af22 | 2019 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2020 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2021 | /* might be an "our" variable" */ |
f472eb5c | 2022 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2023 | /* build ops for a bareword */ |
f472eb5c GS |
2024 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2025 | sv_catpvn(sym, "::", 2); | |
2026 | sv_catpv(sym, PL_tokenbuf+1); | |
2027 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2028 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2029 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2030 | (PL_in_eval |
f472eb5c GS |
2031 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2032 | : TRUE | |
77ca0c92 LW |
2033 | ), |
2034 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2035 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2036 | : SVt_PVHV)); | |
2037 | return WORD; | |
2038 | } | |
2039 | ||
02aa26ce | 2040 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2041 | if (PL_last_lop_op == OP_SORT && |
2042 | PL_tokenbuf[0] == '$' && | |
2043 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2044 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2045 | { |
3280af22 NIS |
2046 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2047 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2048 | d++) |
2049 | { | |
2050 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2051 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2052 | PL_tokenbuf); |
a863c7d1 | 2053 | } |
bbce6d69 | 2054 | } |
2055 | } | |
bbce6d69 | 2056 | |
a863c7d1 MB |
2057 | yylval.opval = newOP(OP_PADANY, 0); |
2058 | yylval.opval->op_targ = tmp; | |
2059 | return PRIVATEREF; | |
2060 | } | |
bbce6d69 | 2061 | } |
2062 | ||
02aa26ce NT |
2063 | /* |
2064 | Whine if they've said @foo in a doublequoted string, | |
2065 | and @foo isn't a variable we can find in the symbol | |
2066 | table. | |
2067 | */ | |
3280af22 NIS |
2068 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2069 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2070 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2071 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2072 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2073 | } |
2074 | ||
02aa26ce | 2075 | /* build ops for a bareword */ |
3280af22 | 2076 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2077 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2078 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2079 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2080 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2081 | : SVt_PVHV)); |
2082 | return WORD; | |
2083 | } | |
2084 | ||
02aa26ce NT |
2085 | /* no identifier pending identification */ |
2086 | ||
3280af22 | 2087 | switch (PL_lex_state) { |
79072805 LW |
2088 | #ifdef COMMENTARY |
2089 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2090 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2091 | break; | |
2092 | #endif | |
2093 | ||
09bef843 | 2094 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2095 | case LEX_KNOWNEXT: |
3280af22 NIS |
2096 | PL_nexttoke--; |
2097 | yylval = PL_nextval[PL_nexttoke]; | |
2098 | if (!PL_nexttoke) { | |
2099 | PL_lex_state = PL_lex_defer; | |
2100 | PL_expect = PL_lex_expect; | |
2101 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2102 | } |
3280af22 | 2103 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2104 | |
02aa26ce | 2105 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2106 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2107 | */ |
79072805 LW |
2108 | case LEX_INTERPCASEMOD: |
2109 | #ifdef DEBUGGING | |
3280af22 | 2110 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2111 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2112 | #endif |
02aa26ce | 2113 | /* handle \E or end of string */ |
3280af22 | 2114 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2115 | char oldmod; |
02aa26ce NT |
2116 | |
2117 | /* if at a \E */ | |
3280af22 NIS |
2118 | if (PL_lex_casemods) { |
2119 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2120 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2121 | |
3280af22 NIS |
2122 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2123 | PL_bufptr += 2; | |
2124 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2125 | } |
79072805 LW |
2126 | return ')'; |
2127 | } | |
3280af22 NIS |
2128 | if (PL_bufptr != PL_bufend) |
2129 | PL_bufptr += 2; | |
2130 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2131 | return yylex(); |
79072805 LW |
2132 | } |
2133 | else { | |
3280af22 | 2134 | s = PL_bufptr + 1; |
79072805 LW |
2135 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2136 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2137 | if (strchr("LU", *s) && |
3280af22 | 2138 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2139 | { |
3280af22 | 2140 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2141 | return ')'; |
2142 | } | |
3280af22 NIS |
2143 | if (PL_lex_casemods > 10) { |
2144 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2145 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2146 | SAVEFREEPV(newlb); |
3280af22 | 2147 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2148 | } |
2149 | } | |
3280af22 NIS |
2150 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2151 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2152 | PL_lex_state = LEX_INTERPCONCAT; | |
2153 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2154 | force_next('('); |
2155 | if (*s == 'l') | |
3280af22 | 2156 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2157 | else if (*s == 'u') |
3280af22 | 2158 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2159 | else if (*s == 'L') |
3280af22 | 2160 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2161 | else if (*s == 'U') |
3280af22 | 2162 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2163 | else if (*s == 'Q') |
3280af22 | 2164 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2165 | else |
cea2e8a9 | 2166 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2167 | PL_bufptr = s + 1; |
79072805 | 2168 | force_next(FUNC); |
3280af22 NIS |
2169 | if (PL_lex_starts) { |
2170 | s = PL_bufptr; | |
2171 | PL_lex_starts = 0; | |
79072805 LW |
2172 | Aop(OP_CONCAT); |
2173 | } | |
2174 | else | |
cea2e8a9 | 2175 | return yylex(); |
79072805 LW |
2176 | } |
2177 | ||
55497cff | 2178 | case LEX_INTERPPUSH: |
2179 | return sublex_push(); | |
2180 | ||
79072805 | 2181 | case LEX_INTERPSTART: |
3280af22 | 2182 | if (PL_bufptr == PL_bufend) |
79072805 | 2183 | return sublex_done(); |
3280af22 NIS |
2184 | PL_expect = XTERM; |
2185 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2186 | PL_lex_state = LEX_INTERPNORMAL; | |
2187 | if (PL_lex_dojoin) { | |
2188 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2189 | force_next(','); |
554b3eca | 2190 | #ifdef USE_THREADS |
533c011a NIS |
2191 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2192 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2193 | force_next(PRIVATEREF); |
2194 | #else | |
a0d0e21e | 2195 | force_ident("\"", '$'); |
554b3eca | 2196 | #endif /* USE_THREADS */ |
3280af22 | 2197 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2198 | force_next('$'); |
3280af22 | 2199 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2200 | force_next('('); |
3280af22 | 2201 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2202 | force_next(FUNC); |
2203 | } | |
3280af22 NIS |
2204 | if (PL_lex_starts++) { |
2205 | s = PL_bufptr; | |
79072805 LW |
2206 | Aop(OP_CONCAT); |
2207 | } | |
cea2e8a9 | 2208 | return yylex(); |
79072805 LW |
2209 | |
2210 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2211 | if (intuit_more(PL_bufptr)) { |
2212 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2213 | break; |
2214 | } | |
2215 | /* FALL THROUGH */ | |
2216 | ||
2217 | case LEX_INTERPEND: | |
3280af22 NIS |
2218 | if (PL_lex_dojoin) { |
2219 | PL_lex_dojoin = FALSE; | |
2220 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2221 | return ')'; |
2222 | } | |
43a16006 | 2223 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2224 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2225 | { |
e9fa98b2 | 2226 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2227 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2228 | PL_lex_repl = Nullsv; |
2229 | } | |
79072805 LW |
2230 | /* FALLTHROUGH */ |
2231 | case LEX_INTERPCONCAT: | |
2232 | #ifdef DEBUGGING | |
3280af22 | 2233 | if (PL_lex_brackets) |
cea2e8a9 | 2234 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2235 | #endif |
3280af22 | 2236 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2237 | return sublex_done(); |
2238 | ||
3280af22 NIS |
2239 | if (SvIVX(PL_linestr) == '\'') { |
2240 | SV *sv = newSVsv(PL_linestr); | |
2241 | if (!PL_lex_inpat) | |
76e3520e | 2242 | sv = tokeq(sv); |
3280af22 | 2243 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2244 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2245 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2246 | s = PL_bufend; |
79072805 LW |
2247 | } |
2248 | else { | |
3280af22 | 2249 | s = scan_const(PL_bufptr); |
79072805 | 2250 | if (*s == '\\') |
3280af22 | 2251 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2252 | else |
3280af22 | 2253 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2254 | } |
2255 | ||
3280af22 NIS |
2256 | if (s != PL_bufptr) { |
2257 | PL_nextval[PL_nexttoke] = yylval; | |
2258 | PL_expect = XTERM; | |
79072805 | 2259 | force_next(THING); |
3280af22 | 2260 | if (PL_lex_starts++) |
79072805 LW |
2261 | Aop(OP_CONCAT); |
2262 | else { | |
3280af22 | 2263 | PL_bufptr = s; |
cea2e8a9 | 2264 | return yylex(); |
79072805 LW |
2265 | } |
2266 | } | |
2267 | ||
cea2e8a9 | 2268 | return yylex(); |
a0d0e21e | 2269 | case LEX_FORMLINE: |
3280af22 NIS |
2270 | PL_lex_state = LEX_NORMAL; |
2271 | s = scan_formline(PL_bufptr); | |
2272 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2273 | goto rightbracket; |
2274 | OPERATOR(';'); | |
79072805 LW |
2275 | } |
2276 | ||
3280af22 NIS |
2277 | s = PL_bufptr; |
2278 | PL_oldoldbufptr = PL_oldbufptr; | |
2279 | PL_oldbufptr = s; | |
79072805 | 2280 | DEBUG_p( { |
bf49b057 GS |
2281 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2282 | exp_name[PL_expect], s); | |
79072805 | 2283 | } ) |
463ee0b2 LW |
2284 | |
2285 | retry: | |
378cc40b LW |
2286 | switch (*s) { |
2287 | default: | |
834a4ddd LW |
2288 | if (isIDFIRST_lazy(s)) |
2289 | goto keylookup; | |
cea2e8a9 | 2290 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2291 | case 4: |
2292 | case 26: | |
2293 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2294 | case 0: |
3280af22 NIS |
2295 | if (!PL_rsfp) { |
2296 | PL_last_uni = 0; | |
2297 | PL_last_lop = 0; | |
2298 | if (PL_lex_brackets) | |
d98d5fff | 2299 | yyerror("Missing right curly or square bracket"); |
79072805 | 2300 | TOKEN(0); |
463ee0b2 | 2301 | } |
3280af22 | 2302 | if (s++ < PL_bufend) |
a687059c | 2303 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2304 | PL_last_uni = 0; |
2305 | PL_last_lop = 0; | |
2306 | if (!PL_in_eval && !PL_preambled) { | |
2307 | PL_preambled = TRUE; | |
2308 | sv_setpv(PL_linestr,incl_perldb()); | |
2309 | if (SvCUR(PL_linestr)) | |
2310 | sv_catpv(PL_linestr,";"); | |
2311 | if (PL_preambleav){ | |
2312 | while(AvFILLp(PL_preambleav) >= 0) { | |
2313 | SV *tmpsv = av_shift(PL_preambleav); | |
2314 | sv_catsv(PL_linestr, tmpsv); | |
2315 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2316 | sv_free(tmpsv); |
2317 | } | |
3280af22 NIS |
2318 | sv_free((SV*)PL_preambleav); |
2319 | PL_preambleav = NULL; | |
91b7def8 | 2320 | } |
3280af22 NIS |
2321 | if (PL_minus_n || PL_minus_p) { |
2322 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2323 | if (PL_minus_l) | |
2324 | sv_catpv(PL_linestr,"chomp;"); | |
2325 | if (PL_minus_a) { | |
8fd239a7 CS |
2326 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2327 | if (gv) | |
2328 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2329 | if (PL_minus_F) { |
2330 | if (strchr("/'\"", *PL_splitstr) | |
2331 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2332 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2333 | else { |
2334 | char delim; | |
2335 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2336 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2337 | delim = *s; |
cea2e8a9 | 2338 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2339 | "q" + (delim == '\''), delim); |
3280af22 | 2340 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2341 | if (*s == '\\') |
3280af22 NIS |
2342 | sv_catpvn(PL_linestr, "\\", 1); |
2343 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2344 | } |
cea2e8a9 | 2345 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2346 | } |
2304df62 AD |
2347 | } |
2348 | else | |
3280af22 | 2349 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2350 | } |
79072805 | 2351 | } |
3280af22 NIS |
2352 | sv_catpv(PL_linestr, "\n"); |
2353 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2354 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2355 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2356 | SV *sv = NEWSV(85,0); |
2357 | ||
2358 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2359 | sv_setsv(sv,PL_linestr); |
57843af0 | 2360 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2361 | } |
79072805 | 2362 | goto retry; |
a687059c | 2363 | } |
e929a76b | 2364 | do { |
3280af22 | 2365 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2366 | fake_eof: |
3280af22 NIS |
2367 | if (PL_rsfp) { |
2368 | if (PL_preprocess && !PL_in_eval) | |
2369 | (void)PerlProc_pclose(PL_rsfp); | |
2370 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2371 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2372 | else |
3280af22 NIS |
2373 | (void)PerlIO_close(PL_rsfp); |
2374 | PL_rsfp = Nullfp; | |
4a9ae47a | 2375 | PL_doextract = FALSE; |
395c3793 | 2376 | } |
3280af22 NIS |
2377 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2378 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2379 | sv_catpv(PL_linestr,";}"); | |
2380 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2381 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2382 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2383 | goto retry; |
2384 | } | |
3280af22 NIS |
2385 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2386 | sv_setpv(PL_linestr,""); | |
79072805 | 2387 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2388 | } |
3280af22 | 2389 | if (PL_doextract) { |
a0d0e21e | 2390 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2391 | PL_doextract = FALSE; |
a0d0e21e LW |
2392 | |
2393 | /* Incest with pod. */ | |
2394 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2395 | sv_setpv(PL_linestr, ""); |
2396 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2397 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2398 | PL_doextract = FALSE; | |
a0d0e21e LW |
2399 | } |
2400 | } | |
463ee0b2 | 2401 | incline(s); |
3280af22 NIS |
2402 | } while (PL_doextract); |
2403 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2404 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2405 | SV *sv = NEWSV(85,0); |
a687059c | 2406 | |
93a17b20 | 2407 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2408 | sv_setsv(sv,PL_linestr); |
57843af0 | 2409 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2410 | } |
3280af22 | 2411 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2412 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2413 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2414 | s++; |
a0d0e21e | 2415 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2416 | s++; |
44a8e56a | 2417 | d = Nullch; |
3280af22 | 2418 | if (!PL_in_eval) { |
44a8e56a | 2419 | if (*s == '#' && *(s+1) == '!') |
2420 | d = s + 2; | |
2421 | #ifdef ALTERNATE_SHEBANG | |
2422 | else { | |
2423 | static char as[] = ALTERNATE_SHEBANG; | |
2424 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2425 | d = s + (sizeof(as) - 1); | |
2426 | } | |
2427 | #endif /* ALTERNATE_SHEBANG */ | |
2428 | } | |
2429 | if (d) { | |
b8378b72 | 2430 | char *ipath; |
774d564b | 2431 | char *ipathend; |
b8378b72 | 2432 | |
774d564b | 2433 | while (isSPACE(*d)) |
b8378b72 CS |
2434 | d++; |
2435 | ipath = d; | |
774d564b | 2436 | while (*d && !isSPACE(*d)) |
2437 | d++; | |
2438 | ipathend = d; | |
2439 | ||
2440 | #ifdef ARG_ZERO_IS_SCRIPT | |
2441 | if (ipathend > ipath) { | |
2442 | /* | |
2443 | * HP-UX (at least) sets argv[0] to the script name, | |
2444 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2445 | * at least, set argv[0] to the basename of the Perl | |
2446 | * interpreter. So, having found "#!", we'll set it right. | |
2447 | */ | |
2448 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2449 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2450 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2451 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2452 | SvSETMAGIC(x); |
2453 | } | |
774d564b | 2454 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2455 | } |
774d564b | 2456 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2457 | |
2458 | /* | |
2459 | * Look for options. | |
2460 | */ | |
748a9306 | 2461 | d = instr(s,"perl -"); |
84e30d1a | 2462 | if (!d) { |
748a9306 | 2463 | d = instr(s,"perl"); |
84e30d1a GS |
2464 | #if defined(DOSISH) |
2465 | /* avoid getting into infinite loops when shebang | |
2466 | * line contains "Perl" rather than "perl" */ | |
2467 | if (!d) { | |
2468 | for (d = ipathend-4; d >= ipath; --d) { | |
2469 | if ((*d == 'p' || *d == 'P') | |
2470 | && !ibcmp(d, "perl", 4)) | |
2471 | { | |
2472 | break; | |
2473 | } | |
2474 | } | |
2475 | if (d < ipath) | |
2476 | d = Nullch; | |
2477 | } | |
2478 | #endif | |
2479 | } | |
44a8e56a | 2480 | #ifdef ALTERNATE_SHEBANG |
2481 | /* | |
2482 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2483 | * character that can be part of a Perl expression, then if | |
2484 | * we see it but not "perl", we're probably looking at the | |
2485 | * start of Perl code, not a request to hand off to some | |
2486 | * other interpreter. Similarly, if "perl" is there, but | |
2487 | * not in the first 'word' of the line, we assume the line | |
2488 | * contains the start of the Perl program. | |
44a8e56a | 2489 | */ |
2490 | if (d && *s != '#') { | |
774d564b | 2491 | char *c = ipath; |
44a8e56a | 2492 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2493 | c++; | |
2494 | if (c < d) | |
2495 | d = Nullch; /* "perl" not in first word; ignore */ | |
2496 | else | |
2497 | *s = '#'; /* Don't try to parse shebang line */ | |
2498 | } | |
774d564b | 2499 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2500 | if (!d && |
44a8e56a | 2501 | *s == '#' && |
774d564b | 2502 | ipathend > ipath && |
3280af22 | 2503 | !PL_minus_c && |
748a9306 | 2504 | !instr(s,"indir") && |
3280af22 | 2505 | instr(PL_origargv[0],"perl")) |
748a9306 | 2506 | { |
9f68db38 | 2507 | char **newargv; |
9f68db38 | 2508 | |
774d564b | 2509 | *ipathend = '\0'; |
2510 | s = ipathend + 1; | |
3280af22 | 2511 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2512 | s++; |
3280af22 NIS |
2513 | if (s < PL_bufend) { |
2514 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2515 | newargv[1] = s; |
3280af22 | 2516 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2517 | s++; |
2518 | *s = '\0'; | |
3280af22 | 2519 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2520 | } |
2521 | else | |
3280af22 | 2522 | newargv = PL_origargv; |
774d564b | 2523 | newargv[0] = ipath; |
80252599 | 2524 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2525 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2526 | } |
748a9306 | 2527 | if (d) { |
3280af22 NIS |
2528 | U32 oldpdb = PL_perldb; |
2529 | bool oldn = PL_minus_n; | |
2530 | bool oldp = PL_minus_p; | |
748a9306 LW |
2531 | |
2532 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2533 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2534 | |
2535 | if (*d++ == '-') { | |
8cc95fdb | 2536 | do { |
2537 | if (*d == 'M' || *d == 'm') { | |
2538 | char *m = d; | |
2539 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2540 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2541 | (int)(d - m), m); |
2542 | } | |
2543 | d = moreswitches(d); | |
2544 | } while (d); | |
84902520 | 2545 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2546 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2547 | /* if we have already added "LINE: while (<>) {", |
2548 | we must not do it again */ | |
748a9306 | 2549 | { |
3280af22 NIS |
2550 | sv_setpv(PL_linestr, ""); |
2551 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2552 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2553 | PL_preambled = FALSE; | |
84902520 | 2554 | if (PERLDB_LINE) |
3280af22 | 2555 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2556 | goto retry; |
2557 | } | |
a0d0e21e | 2558 | } |
79072805 | 2559 | } |
9f68db38 | 2560 | } |
79072805 | 2561 | } |
3280af22 NIS |
2562 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2563 | PL_bufptr = s; | |
2564 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2565 | return yylex(); |
ae986130 | 2566 | } |
378cc40b | 2567 | goto retry; |
4fdae800 | 2568 | case '\r': |
6a27c188 | 2569 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2570 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2571 | Perl_croak(aTHX_ | |
54310121 | 2572 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2573 | #endif |
4fdae800 | 2574 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2575 | s++; |
2576 | goto retry; | |
378cc40b | 2577 | case '#': |
e929a76b | 2578 | case '\n': |
3280af22 NIS |
2579 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2580 | d = PL_bufend; | |
a687059c | 2581 | while (s < d && *s != '\n') |
378cc40b | 2582 | s++; |
0f85fab0 | 2583 | if (s < d) |
378cc40b | 2584 | s++; |
463ee0b2 | 2585 | incline(s); |
3280af22 NIS |
2586 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2587 | PL_bufptr = s; | |
2588 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2589 | return yylex(); |
a687059c | 2590 | } |
378cc40b | 2591 | } |
a687059c | 2592 | else { |
378cc40b | 2593 | *s = '\0'; |
3280af22 | 2594 | PL_bufend = s; |
a687059c | 2595 | } |
378cc40b LW |
2596 | goto retry; |
2597 | case '-': | |
79072805 | 2598 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2599 | s++; |
3280af22 | 2600 | PL_bufptr = s; |
748a9306 LW |
2601 | tmp = *s++; |
2602 | ||
3280af22 | 2603 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2604 | s++; |
2605 | ||
2606 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2607 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2608 | OPERATOR('-'); /* unary minus */ |
2609 | } | |
3280af22 NIS |
2610 | PL_last_uni = PL_oldbufptr; |
2611 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2612 | switch (tmp) { |
79072805 LW |
2613 | case 'r': FTST(OP_FTEREAD); |
2614 | case 'w': FTST(OP_FTEWRITE); | |
2615 | case 'x': FTST(OP_FTEEXEC); | |
2616 | case 'o': FTST(OP_FTEOWNED); | |
2617 | case 'R': FTST(OP_FTRREAD); | |
2618 | case 'W': FTST(OP_FTRWRITE); | |
2619 | case 'X': FTST(OP_FTREXEC); | |
2620 | case 'O': FTST(OP_FTROWNED); | |
2621 | case 'e': FTST(OP_FTIS); | |
2622 | case 'z': FTST(OP_FTZERO); | |
2623 | case 's': FTST(OP_FTSIZE); | |
2624 | case 'f': FTST(OP_FTFILE); | |
2625 | case 'd': FTST(OP_FTDIR); | |
2626 | case 'l': FTST(OP_FTLINK); | |
2627 | case 'p': FTST(OP_FTPIPE); | |
2628 | case 'S': FTST(OP_FTSOCK); | |
2629 | case 'u': FTST(OP_FTSUID); | |
2630 | case 'g': FTST(OP_FTSGID); | |
2631 | case 'k': FTST(OP_FTSVTX); | |
2632 | case 'b': FTST(OP_FTBLK); | |
2633 | case 'c': FTST(OP_FTCHR); | |
2634 | case 't': FTST(OP_FTTTY); | |
2635 | case 'T': FTST(OP_FTTEXT); | |
2636 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2637 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2638 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2639 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2640 | default: |
cea2e8a9 | 2641 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2642 | break; |
2643 | } | |
2644 | } | |
a687059c LW |
2645 | tmp = *s++; |
2646 | if (*s == tmp) { | |
2647 | s++; | |
3280af22 | 2648 | if (PL_expect == XOPERATOR) |
79072805 LW |
2649 | TERM(POSTDEC); |
2650 | else | |
2651 | OPERATOR(PREDEC); | |
2652 | } | |
2653 | else if (*s == '>') { | |
2654 | s++; | |
2655 | s = skipspace(s); | |
834a4ddd | 2656 | if (isIDFIRST_lazy(s)) { |
a0d0e21e | 2657 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2658 | TOKEN(ARROW); |
79072805 | 2659 | } |
748a9306 LW |
2660 | else if (*s == '$') |
2661 | OPERATOR(ARROW); | |
463ee0b2 | 2662 | else |
748a9306 | 2663 | TERM(ARROW); |
a687059c | 2664 | } |
3280af22 | 2665 | if (PL_expect == XOPERATOR) |
79072805 LW |
2666 | Aop(OP_SUBTRACT); |
2667 | else { | |
3280af22 | 2668 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2669 | check_uni(); |
79072805 | 2670 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2671 | } |
79072805 | 2672 | |
378cc40b | 2673 | case '+': |
a687059c LW |
2674 | tmp = *s++; |
2675 | if (*s == tmp) { | |
378cc40b | 2676 | s++; |
3280af22 | 2677 | if (PL_expect == XOPERATOR) |
79072805 LW |
2678 | TERM(POSTINC); |
2679 | else | |
2680 | OPERATOR(PREINC); | |
378cc40b | 2681 | } |
3280af22 | 2682 | if (PL_expect == XOPERATOR) |
79072805 LW |
2683 | Aop(OP_ADD); |
2684 | else { | |
3280af22 | 2685 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2686 | check_uni(); |
a687059c | 2687 | OPERATOR('+'); |
2f3197b3 | 2688 | } |
a687059c | 2689 | |
378cc40b | 2690 | case '*': |
3280af22 NIS |
2691 | if (PL_expect != XOPERATOR) { |
2692 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2693 | PL_expect = XOPERATOR; | |
2694 | force_ident(PL_tokenbuf, '*'); | |
2695 | if (!*PL_tokenbuf) | |
a0d0e21e | 2696 | PREREF('*'); |
79072805 | 2697 | TERM('*'); |
a687059c | 2698 | } |
79072805 LW |
2699 | s++; |
2700 | if (*s == '*') { | |
a687059c | 2701 | s++; |
79072805 | 2702 | PWop(OP_POW); |
a687059c | 2703 | } |
79072805 LW |
2704 | Mop(OP_MULTIPLY); |
2705 | ||
378cc40b | 2706 | case '%': |
3280af22 | 2707 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2708 | ++s; |
2709 | Mop(OP_MODULO); | |
a687059c | 2710 | } |
3280af22 NIS |
2711 | PL_tokenbuf[0] = '%'; |
2712 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2713 | if (!PL_tokenbuf[1]) { | |
2714 | if (s == PL_bufend) | |
bbce6d69 | 2715 | yyerror("Final % should be \\% or %name"); |
2716 | PREREF('%'); | |
a687059c | 2717 | } |
3280af22 | 2718 | PL_pending_ident = '%'; |
bbce6d69 | 2719 | TERM('%'); |
a687059c | 2720 | |
378cc40b | 2721 | case '^': |
79072805 | 2722 | s++; |
a0d0e21e | 2723 | BOop(OP_BIT_XOR); |
79072805 | 2724 | case '[': |
3280af22 | 2725 | PL_lex_brackets++; |
79072805 | 2726 | /* FALL THROUGH */ |
378cc40b | 2727 | case '~': |
378cc40b | 2728 | case ',': |
378cc40b LW |
2729 | tmp = *s++; |
2730 | OPERATOR(tmp); | |
a0d0e21e LW |
2731 | case ':': |
2732 | if (s[1] == ':') { | |
2733 | len = 0; | |
2734 | goto just_a_word; | |
2735 | } | |
2736 | s++; | |
09bef843 SB |
2737 | switch (PL_expect) { |
2738 | OP *attrs; | |
2739 | case XOPERATOR: | |
2740 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2741 | break; | |
2742 | PL_bufptr = s; /* update in case we back off */ | |
2743 | goto grabattrs; | |
2744 | case XATTRBLOCK: | |
2745 | PL_expect = XBLOCK; | |
2746 | goto grabattrs; | |
2747 | case XATTRTERM: | |
2748 | PL_expect = XTERMBLOCK; | |
2749 | grabattrs: | |
2750 | s = skipspace(s); | |
2751 | attrs = Nullop; | |
2752 | while (isIDFIRST_lazy(s)) { | |
2753 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
2754 | if (*d == '(') { | |
2755 | d = scan_str(d,TRUE,TRUE); | |
2756 | if (!d) { | |
2757 | if (PL_lex_stuff) { | |
2758 | SvREFCNT_dec(PL_lex_stuff); | |
2759 | PL_lex_stuff = Nullsv; | |
2760 | } | |
2761 | /* MUST advance bufptr here to avoid bogus | |
2762 | "at end of line" context messages from yyerror(). | |
2763 | */ | |
2764 | PL_bufptr = s + len; | |
2765 | yyerror("Unterminated attribute parameter in attribute list"); | |
2766 | if (attrs) | |
2767 | op_free(attrs); | |
2768 | return 0; /* EOF indicator */ | |
2769 | } | |
2770 | } | |
2771 | if (PL_lex_stuff) { | |
2772 | SV *sv = newSVpvn(s, len); | |
2773 | sv_catsv(sv, PL_lex_stuff); | |
2774 | attrs = append_elem(OP_LIST, attrs, | |
2775 | newSVOP(OP_CONST, 0, sv)); | |
2776 | SvREFCNT_dec(PL_lex_stuff); | |
2777 | PL_lex_stuff = Nullsv; | |
2778 | } | |
2779 | else { | |
2780 | attrs = append_elem(OP_LIST, attrs, | |
2781 | newSVOP(OP_CONST, 0, | |
2782 | newSVpvn(s, len))); | |
2783 | } | |
2784 | s = skipspace(d); | |
2785 | while (*s == ',') | |
2786 | s = skipspace(s+1); | |
2787 | } | |
2788 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}' for vi */ | |
2789 | if (*s != ';' && *s != tmp) { | |
2790 | char q = ((*s == '\'') ? '"' : '\''); | |
2791 | /* If here for an expression, and parsed no attrs, back off. */ | |
2792 | if (tmp == '=' && !attrs) { | |
2793 | s = PL_bufptr; | |
2794 | break; | |
2795 | } | |
2796 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2797 | context messages from yyerror(). | |
2798 | */ | |
2799 | PL_bufptr = s; | |
2800 | if (!*s) | |
2801 | yyerror("Unterminated attribute list"); | |
2802 | else | |
2803 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2804 | q, *s, q)); | |
2805 | if (attrs) | |
2806 | op_free(attrs); | |
2807 | OPERATOR(':'); | |
2808 | } | |
2809 | if (attrs) { | |
2810 | PL_nextval[PL_nexttoke].opval = attrs; | |
2811 | force_next(THING); | |
2812 | } | |
2813 | TOKEN(COLONATTR); | |
2814 | } | |
a0d0e21e | 2815 | OPERATOR(':'); |
8990e307 LW |
2816 | case '(': |
2817 | s++; | |
3280af22 NIS |
2818 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2819 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2820 | else |
3280af22 | 2821 | PL_expect = XTERM; |
a0d0e21e | 2822 | TOKEN('('); |
378cc40b | 2823 | case ';': |
57843af0 GS |
2824 | if (CopLINE(PL_curcop) < PL_copline) |
2825 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2826 | tmp = *s++; |
2827 | OPERATOR(tmp); | |
2828 | case ')': | |
378cc40b | 2829 | tmp = *s++; |
16d20bd9 AD |
2830 | s = skipspace(s); |
2831 | if (*s == '{') | |
2832 | PREBLOCK(tmp); | |
378cc40b | 2833 | TERM(tmp); |
79072805 LW |
2834 | case ']': |
2835 | s++; | |
3280af22 | 2836 | if (PL_lex_brackets <= 0) |
d98d5fff | 2837 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2838 | else |
3280af22 NIS |
2839 | --PL_lex_brackets; |
2840 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2841 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2842 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2843 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2844 | } |
2845 | } | |
4633a7c4 | 2846 | TERM(']'); |
79072805 LW |
2847 | case '{': |
2848 | leftbracket: | |
79072805 | 2849 | s++; |
3280af22 NIS |
2850 | if (PL_lex_brackets > 100) { |
2851 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2852 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2853 | SAVEFREEPV(newlb); |
3280af22 | 2854 | PL_lex_brackstack = newlb; |
8990e307 LW |
2855 | } |
2856 | } | |
3280af22 | 2857 | switch (PL_expect) { |
a0d0e21e | 2858 | case XTERM: |
3280af22 | 2859 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2860 | s--; |
2861 | PRETERMBLOCK(DO); | |
2862 | } | |
3280af22 NIS |
2863 | if (PL_oldoldbufptr == PL_last_lop) |
2864 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2865 | else |
3280af22 | 2866 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2867 | OPERATOR(HASHBRACK); |
a0d0e21e | 2868 | case XOPERATOR: |
3280af22 | 2869 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2870 | s++; |
44a8e56a | 2871 | d = s; |
3280af22 NIS |
2872 | PL_tokenbuf[0] = '\0'; |
2873 | if (d < PL_bufend && *d == '-') { | |
2874 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2875 | d++; |
3280af22 | 2876 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2877 | d++; |
2878 | } | |
834a4ddd | 2879 | if (d < PL_bufend && isIDFIRST_lazy(d)) { |
3280af22 | 2880 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2881 | FALSE, &len); |
3280af22 | 2882 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2883 | d++; |
2884 | if (*d == '}') { | |
3280af22 | 2885 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2886 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2887 | if (minus) | |
2888 | force_next('-'); | |
748a9306 LW |
2889 | } |
2890 | } | |
2891 | /* FALL THROUGH */ | |
09bef843 | 2892 | case XATTRBLOCK: |
748a9306 | 2893 | case XBLOCK: |
3280af22 NIS |
2894 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2895 | PL_expect = XSTATE; | |
a0d0e21e | 2896 | break; |
09bef843 | 2897 | case XATTRTERM: |
a0d0e21e | 2898 | case XTERMBLOCK: |
3280af22 NIS |
2899 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2900 | PL_expect = XSTATE; | |
a0d0e21e LW |
2901 | break; |
2902 | default: { | |
2903 | char *t; | |
3280af22 NIS |
2904 | if (PL_oldoldbufptr == PL_last_lop) |
2905 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2906 | else |
3280af22 | 2907 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2908 | s = skipspace(s); |
09ecc4b6 | 2909 | if (*s == '}') |
a0d0e21e | 2910 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2911 | /* This hack serves to disambiguate a pair of curlies |
2912 | * as being a block or an anon hash. Normally, expectation | |
2913 | * determines that, but in cases where we're not in a | |
2914 | * position to expect anything in particular (like inside | |
2915 | * eval"") we have to resolve the ambiguity. This code | |
2916 | * covers the case where the first term in the curlies is a | |
2917 | * quoted string. Most other cases need to be explicitly | |
2918 | * disambiguated by prepending a `+' before the opening | |
2919 | * curly in order to force resolution as an anon hash. | |
2920 | * | |
2921 | * XXX should probably propagate the outer expectation | |
2922 | * into eval"" to rely less on this hack, but that could | |
2923 | * potentially break current behavior of eval"". | |
2924 | * GSAR 97-07-21 | |
2925 | */ | |
2926 | t = s; | |
2927 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2928 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2929 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2930 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2931 | t++; | |
2932 | t++; | |
a0d0e21e | 2933 | } |
b8a4b1be | 2934 | else if (*s == 'q') { |
3280af22 | 2935 | if (++t < PL_bufend |
b8a4b1be | 2936 | && (!isALNUM(*t) |
3280af22 | 2937 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
2938 | && !isALNUM(*t)))) |
2939 | { | |
b8a4b1be GS |
2940 | char *tmps; |
2941 | char open, close, term; | |
2942 | I32 brackets = 1; | |
2943 | ||
3280af22 | 2944 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2945 | t++; |
2946 | term = *t; | |
2947 | open = term; | |
2948 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2949 | term = tmps[5]; | |
2950 | close = term; | |
2951 | if (open == close) | |
3280af22 NIS |
2952 | for (t++; t < PL_bufend; t++) { |
2953 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2954 | t++; |
6d07e5e9 | 2955 | else if (*t == open) |
b8a4b1be GS |
2956 | break; |
2957 | } | |
2958 | else | |
3280af22 NIS |
2959 | for (t++; t < PL_bufend; t++) { |
2960 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2961 | t++; |
6d07e5e9 | 2962 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2963 | break; |
2964 | else if (*t == open) | |
2965 | brackets++; | |
2966 | } | |
2967 | } | |
2968 | t++; | |
a0d0e21e | 2969 | } |
0505442f GS |
2970 | else if (isALNUM_lazy(t)) { |
2971 | t += UTF8SKIP(t); | |
2972 | while (t < PL_bufend && isALNUM_lazy(t)) | |
2973 | t += UTF8SKIP(t); | |
a0d0e21e | 2974 | } |
3280af22 | 2975 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2976 | t++; |
b8a4b1be GS |
2977 | /* if comma follows first term, call it an anon hash */ |
2978 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2979 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2980 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2981 | OPERATOR(HASHBRACK); |
3280af22 | 2982 | if (PL_expect == XREF) |
4e4e412b | 2983 | PL_expect = XTERM; |
a0d0e21e | 2984 | else { |
3280af22 NIS |
2985 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2986 | PL_expect = XSTATE; | |
a0d0e21e | 2987 | } |
8990e307 | 2988 | } |
a0d0e21e | 2989 | break; |
463ee0b2 | 2990 | } |
57843af0 | 2991 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 2992 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2993 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2994 | TOKEN('{'); |
378cc40b | 2995 | case '}': |
79072805 LW |
2996 | rightbracket: |
2997 | s++; | |
3280af22 | 2998 | if (PL_lex_brackets <= 0) |
d98d5fff | 2999 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3000 | else |
3280af22 NIS |
3001 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
3002 | if (PL_lex_brackets < PL_lex_formbrack) | |
3003 | PL_lex_formbrack = 0; | |
3004 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3005 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3006 | if (PL_expect & XFAKEBRACK) { |
3007 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3008 | PL_lex_state = LEX_INTERPEND; |
3009 | PL_bufptr = s; | |
cea2e8a9 | 3010 | return yylex(); /* ignore fake brackets */ |
79072805 | 3011 | } |
fa83b5b6 | 3012 | if (*s == '-' && s[1] == '>') |
3280af22 | 3013 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3014 | else if (*s != '[' && *s != '{') |
3280af22 | 3015 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3016 | } |
3017 | } | |
9059aa12 LW |
3018 | if (PL_expect & XFAKEBRACK) { |
3019 | PL_expect &= XENUMMASK; | |
3280af22 | 3020 | PL_bufptr = s; |
cea2e8a9 | 3021 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3022 | } |
79072805 LW |
3023 | force_next('}'); |
3024 | TOKEN(';'); | |
378cc40b LW |
3025 | case '&': |
3026 | s++; | |
3027 | tmp = *s++; | |
3028 | if (tmp == '&') | |
a0d0e21e | 3029 | AOPERATOR(ANDAND); |
378cc40b | 3030 | s--; |
3280af22 | 3031 | if (PL_expect == XOPERATOR) { |
834a4ddd | 3032 | if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) { |
57843af0 | 3033 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3034 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3035 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3036 | } |
79072805 | 3037 | BAop(OP_BIT_AND); |
463ee0b2 | 3038 | } |
79072805 | 3039 | |
3280af22 NIS |
3040 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3041 | if (*PL_tokenbuf) { | |
3042 | PL_expect = XOPERATOR; | |
3043 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3044 | } |
79072805 LW |
3045 | else |
3046 | PREREF('&'); | |
c07a80fd | 3047 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3048 | TERM('&'); |
3049 | ||
378cc40b LW |
3050 | case '|': |
3051 | s++; | |
3052 | tmp = *s++; | |
3053 | if (tmp == '|') | |
a0d0e21e | 3054 | AOPERATOR(OROR); |
378cc40b | 3055 | s--; |
79072805 | 3056 | BOop(OP_BIT_OR); |
378cc40b LW |
3057 | case '=': |
3058 | s++; | |
3059 | tmp = *s++; | |
3060 | if (tmp == '=') | |
79072805 LW |
3061 | Eop(OP_EQ); |
3062 | if (tmp == '>') | |
3063 | OPERATOR(','); | |
378cc40b | 3064 | if (tmp == '~') |
79072805 | 3065 | PMop(OP_MATCH); |
599cee73 | 3066 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3067 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3068 | s--; |
3280af22 NIS |
3069 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3070 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3071 | { |
3280af22 NIS |
3072 | if (PL_in_eval && !PL_rsfp) { |
3073 | d = PL_bufend; | |
a5f75d66 AD |
3074 | while (s < d) { |
3075 | if (*s++ == '\n') { | |
3076 | incline(s); | |
3077 | if (strnEQ(s,"=cut",4)) { | |
3078 | s = strchr(s,'\n'); | |
3079 | if (s) | |
3080 | s++; | |
3081 | else | |
3082 | s = d; | |
3083 | incline(s); | |
3084 | goto retry; | |
3085 | } | |
3086 | } | |
3087 | } | |
3088 | goto retry; | |
3089 | } | |
3280af22 NIS |
3090 | s = PL_bufend; |
3091 | PL_doextract = TRUE; | |
a0d0e21e LW |
3092 | goto retry; |
3093 | } | |
3280af22 | 3094 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3095 | char *t; |
51882d45 | 3096 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3097 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3098 | #else |
3099 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3100 | #endif | |
a0d0e21e LW |
3101 | if (*t == '\n' || *t == '#') { |
3102 | s--; | |
3280af22 | 3103 | PL_expect = XBLOCK; |
a0d0e21e LW |
3104 | goto leftbracket; |
3105 | } | |
79072805 | 3106 | } |
a0d0e21e LW |
3107 | yylval.ival = 0; |
3108 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3109 | case '!': |
3110 | s++; | |
3111 | tmp = *s++; | |
3112 | if (tmp == '=') | |
79072805 | 3113 | Eop(OP_NE); |
378cc40b | 3114 | if (tmp == '~') |
79072805 | 3115 | PMop(OP_NOT); |
378cc40b LW |
3116 | s--; |
3117 | OPERATOR('!'); | |
3118 | case '<': | |
3280af22 | 3119 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3120 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3121 | check_uni(); |
79072805 LW |
3122 | if (s[1] == '<') |
3123 | s = scan_heredoc(s); | |
3124 | else | |
3125 | s = scan_inputsymbol(s); | |
3126 | TERM(sublex_start()); | |
378cc40b LW |
3127 | } |
3128 | s++; | |
3129 | tmp = *s++; | |
3130 | if (tmp == '<') | |
79072805 | 3131 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3132 | if (tmp == '=') { |
3133 | tmp = *s++; | |
3134 | if (tmp == '>') | |
79072805 | 3135 | Eop(OP_NCMP); |
395c3793 | 3136 | s--; |
79072805 | 3137 | Rop(OP_LE); |
395c3793 | 3138 | } |
378cc40b | 3139 | s--; |
79072805 | 3140 | Rop(OP_LT); |
378cc40b LW |
3141 | case '>': |
3142 | s++; | |
3143 | tmp = *s++; | |
3144 | if (tmp == '>') | |
79072805 | 3145 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3146 | if (tmp == '=') |
79072805 | 3147 | Rop(OP_GE); |
378cc40b | 3148 | s--; |
79072805 | 3149 | Rop(OP_GT); |
378cc40b LW |
3150 | |
3151 | case '$': | |
bbce6d69 | 3152 | CLINE; |
3153 | ||
3280af22 NIS |
3154 | if (PL_expect == XOPERATOR) { |
3155 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3156 | PL_expect = XTERM; | |
a0d0e21e | 3157 | depcom(); |
bbce6d69 | 3158 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3159 | } |
8990e307 | 3160 | } |
a0d0e21e | 3161 | |
834a4ddd | 3162 | if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) { |
3280af22 | 3163 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3164 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3165 | sizeof PL_tokenbuf - 1, FALSE); | |
3166 | if (PL_expect == XOPERATOR) | |
3167 | no_op("Array length", s); | |
3280af22 | 3168 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3169 | PREREF(DOLSHARP); |
3280af22 NIS |
3170 | PL_expect = XOPERATOR; |
3171 | PL_pending_ident = '#'; | |
463ee0b2 | 3172 | TOKEN(DOLSHARP); |
79072805 | 3173 | } |
bbce6d69 | 3174 | |
3280af22 | 3175 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3176 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3177 | sizeof PL_tokenbuf - 1, FALSE); | |
3178 | if (PL_expect == XOPERATOR) | |
3179 | no_op("Scalar", s); | |
3280af22 NIS |
3180 | if (!PL_tokenbuf[1]) { |
3181 | if (s == PL_bufend) | |
bbce6d69 | 3182 | yyerror("Final $ should be \\$ or $name"); |
3183 | PREREF('$'); | |
8990e307 | 3184 | } |
a0d0e21e | 3185 | |
bbce6d69 | 3186 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3187 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3188 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3189 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3190 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3191 | TERM(THING); | |
3192 | } | |
3193 | ||
ff68c719 | 3194 | d = s; |
69d2bceb | 3195 | tmp = (I32)*s; |
3280af22 | 3196 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3197 | s = skipspace(s); |
3198 | ||
3280af22 | 3199 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3200 | char *t; |
3201 | if (*s == '[') { | |
3280af22 | 3202 | PL_tokenbuf[0] = '@'; |
599cee73 | 3203 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3204 | for(t = s + 1; |
834a4ddd | 3205 | isSPACE(*t) || isALNUM_lazy(t) || *t == '$'; |
bbce6d69 | 3206 | t++) ; |
a0d0e21e | 3207 | if (*t++ == ',') { |
3280af22 NIS |
3208 | PL_bufptr = skipspace(PL_bufptr); |
3209 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3210 | t++; |
cea2e8a9 | 3211 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3212 | "Multidimensional syntax %.*s not supported", |
3213 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3214 | } |
3215 | } | |
bbce6d69 | 3216 | } |
3217 | else if (*s == '{') { | |
3280af22 | 3218 | PL_tokenbuf[0] = '%'; |
599cee73 | 3219 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3220 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3221 | { | |
3280af22 | 3222 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3223 | STRLEN len; |
3224 | for (t++; isSPACE(*t); t++) ; | |
834a4ddd | 3225 | if (isIDFIRST_lazy(t)) { |
8903cb82 | 3226 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3227 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3228 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3229 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3230 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3231 | } |
93a17b20 LW |
3232 | } |
3233 | } | |
2f3197b3 | 3234 | } |
bbce6d69 | 3235 | |
3280af22 | 3236 | PL_expect = XOPERATOR; |
69d2bceb | 3237 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3238 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3239 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3240 | PL_expect = XOPERATOR; | |
bbce6d69 | 3241 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3242 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
834a4ddd | 3243 | else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1)) |
3280af22 | 3244 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
834a4ddd | 3245 | else if (isIDFIRST_lazy(s)) { |
3280af22 | 3246 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3247 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
3248 | if (tmp = keyword(tmpbuf, len)) { |
3249 | /* binary operators exclude handle interpretations */ | |
3250 | switch (tmp) { | |
3251 | case -KEY_x: | |
3252 | case -KEY_eq: | |
3253 | case -KEY_ne: | |
3254 | case -KEY_gt: | |
3255 | case -KEY_lt: | |
3256 | case -KEY_ge: | |
3257 | case -KEY_le: | |
3258 | case -KEY_cmp: | |
3259 | break; | |
3260 | default: | |
3280af22 | 3261 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3262 | break; |
3263 | } | |
3264 | } | |
68dc0745 | 3265 | else { |
3266 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3267 | if (gv && GvCVu(gv)) | |
3280af22 | 3268 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3269 | } |
93a17b20 | 3270 | } |
bbce6d69 | 3271 | else if (isDIGIT(*s)) |
3280af22 | 3272 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3273 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3274 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3275 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3276 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3277 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3278 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3279 | } |
3280af22 | 3280 | PL_pending_ident = '$'; |
79072805 | 3281 | TOKEN('$'); |
378cc40b LW |
3282 | |
3283 | case '@': | |
3280af22 | 3284 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3285 | no_op("Array", s); |
3280af22 NIS |
3286 | PL_tokenbuf[0] = '@'; |
3287 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3288 | if (!PL_tokenbuf[1]) { | |
3289 | if (s == PL_bufend) | |
bbce6d69 | 3290 | yyerror("Final @ should be \\@ or @name"); |
3291 | PREREF('@'); | |
3292 | } | |
3280af22 | 3293 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3294 | s = skipspace(s); |
3280af22 | 3295 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3296 | if (*s == '{') |
3280af22 | 3297 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3298 | |
3299 | /* Warn about @ where they meant $. */ | |
599cee73 | 3300 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3301 | if (*s == '[' || *s == '{') { |
3302 | char *t = s + 1; | |
834a4ddd | 3303 | while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3304 | t++; |
3305 | if (*t == '}' || *t == ']') { | |
3306 | t++; | |
3280af22 | 3307 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3308 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3309 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3310 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3311 | } |
93a17b20 LW |
3312 | } |
3313 | } | |
463ee0b2 | 3314 | } |
3280af22 | 3315 | PL_pending_ident = '@'; |
79072805 | 3316 | TERM('@'); |
378cc40b LW |
3317 | |
3318 | case '/': /* may either be division or pattern */ | |
3319 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3320 | if (PL_expect != XOPERATOR) { |
c277df42 | 3321 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3322 | if (PL_oldoldbufptr == PL_last_uni |
3323 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
834a4ddd | 3324 | || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5))) |
c277df42 | 3325 | check_uni(); |
8782bef2 | 3326 | s = scan_pat(s,OP_MATCH); |
79072805 | 3327 | TERM(sublex_start()); |
378cc40b LW |
3328 | } |
3329 | tmp = *s++; | |
a687059c | 3330 | if (tmp == '/') |
79072805 | 3331 | Mop(OP_DIVIDE); |
378cc40b LW |
3332 | OPERATOR(tmp); |
3333 | ||
3334 | case '.': | |
51882d45 GS |
3335 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3336 | #ifdef PERL_STRICT_CR | |
3337 | && s[1] == '\n' | |
3338 | #else | |
3339 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3340 | #endif | |
3341 | && (s == PL_linestart || s[-1] == '\n') ) | |
3342 | { | |
3280af22 NIS |
3343 | PL_lex_formbrack = 0; |
3344 | PL_expect = XSTATE; | |
79072805 LW |
3345 | goto rightbracket; |
3346 | } | |
3280af22 | 3347 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3348 | tmp = *s++; |
a687059c LW |
3349 | if (*s == tmp) { |
3350 | s++; | |
2f3197b3 LW |
3351 | if (*s == tmp) { |
3352 | s++; | |
79072805 | 3353 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3354 | } |
3355 | else | |
79072805 | 3356 | yylval.ival = 0; |
378cc40b | 3357 | OPERATOR(DOTDOT); |
a687059c | 3358 | } |
3280af22 | 3359 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3360 | check_uni(); |
79072805 | 3361 | Aop(OP_CONCAT); |
378cc40b LW |
3362 | } |
3363 | /* FALL THROUGH */ | |
3364 | case '0': case '1': case '2': case '3': case '4': | |
3365 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3366 | s = scan_num(s); |
3280af22 | 3367 | if (PL_expect == XOPERATOR) |
8990e307 | 3368 | no_op("Number",s); |
79072805 LW |
3369 | TERM(THING); |
3370 | ||
3371 | case '\'': | |
09bef843 | 3372 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3373 | if (PL_expect == XOPERATOR) { |
3374 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3375 | PL_expect = XTERM; | |
a0d0e21e LW |
3376 | depcom(); |
3377 | return ','; /* grandfather non-comma-format format */ | |
3378 | } | |
463ee0b2 | 3379 | else |
8990e307 | 3380 | no_op("String",s); |
463ee0b2 | 3381 | } |
79072805 | 3382 | if (!s) |
85e6fe83 | 3383 | missingterm((char*)0); |
79072805 LW |
3384 | yylval.ival = OP_CONST; |
3385 | TERM(sublex_start()); | |
3386 | ||
3387 | case '"': | |
09bef843 | 3388 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3389 | if (PL_expect == XOPERATOR) { |
3390 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3391 | PL_expect = XTERM; | |
a0d0e21e LW |
3392 | depcom(); |
3393 | return ','; /* grandfather non-comma-format format */ | |
3394 | } | |
463ee0b2 | 3395 | else |
8990e307 | 3396 | no_op("String",s); |
463ee0b2 | 3397 | } |
79072805 | 3398 | if (!s) |
85e6fe83 | 3399 | missingterm((char*)0); |
4633a7c4 | 3400 | yylval.ival = OP_CONST; |
3280af22 | 3401 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3402 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3403 | yylval.ival = OP_STRINGIFY; |
3404 | break; | |
3405 | } | |
3406 | } | |
79072805 LW |
3407 | TERM(sublex_start()); |
3408 | ||
3409 | case '`': | |
09bef843 | 3410 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3411 | if (PL_expect == XOPERATOR) |
8990e307 | 3412 | no_op("Backticks",s); |
79072805 | 3413 | if (!s) |
85e6fe83 | 3414 | missingterm((char*)0); |
79072805 LW |
3415 | yylval.ival = OP_BACKTICK; |
3416 | set_csh(); | |
3417 | TERM(sublex_start()); | |
3418 | ||
3419 | case '\\': | |
3420 | s++; | |
599cee73 | 3421 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3422 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3423 | *s, *s); |
3280af22 | 3424 | if (PL_expect == XOPERATOR) |
8990e307 | 3425 | no_op("Backslash",s); |
79072805 LW |
3426 | OPERATOR(REFGEN); |
3427 | ||
a7cb1f99 GS |
3428 | case 'v': |
3429 | if (isDIGIT(s[1]) && PL_expect == XTERM) { | |
3430 | char *start = s; | |
3431 | start++; | |
3432 | start++; | |
3433 | while (isDIGIT(*start)) | |
3434 | start++; | |
3435 | if (*start == '.' && isDIGIT(start[1])) { | |
3436 | s = scan_num(s); | |
3437 | TERM(THING); | |
3438 | } | |
3439 | } | |
3440 | goto keylookup; | |
79072805 | 3441 | case 'x': |
3280af22 | 3442 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3443 | s++; |
3444 | Mop(OP_REPEAT); | |
2f3197b3 | 3445 | } |
79072805 LW |
3446 | goto keylookup; |
3447 | ||
378cc40b | 3448 | case '_': |
79072805 LW |
3449 | case 'a': case 'A': |
3450 | case 'b': case 'B': | |
3451 | case 'c': case 'C': | |
3452 | case 'd': case 'D': | |
3453 | case 'e': case 'E': | |
3454 | case 'f': case 'F': | |
3455 | case 'g': case 'G': | |
3456 | case 'h': case 'H': | |
3457 | case 'i': case 'I': | |
3458 | case 'j': case 'J': | |
3459 | case 'k': case 'K': | |
3460 | case 'l': case 'L': | |
3461 | case 'm': case 'M': | |
3462 | case 'n': case 'N': | |
3463 | case 'o': case 'O': | |
3464 | case 'p': case 'P': | |
3465 | case 'q': case 'Q': | |
3466 | case 'r': case 'R': | |
3467 | case 's': case 'S': | |
3468 | case 't': case 'T': | |
3469 | case 'u': case 'U': | |
a7cb1f99 | 3470 | case 'V': |
79072805 LW |
3471 | case 'w': case 'W': |
3472 | case 'X': | |
3473 | case 'y': case 'Y': | |
3474 | case 'z': case 'Z': | |
3475 | ||
49dc05e3 | 3476 | keylookup: { |
2d8e6c8d | 3477 | STRLEN n_a; |
161b471a NIS |
3478 | gv = Nullgv; |
3479 | gvp = 0; | |
49dc05e3 | 3480 | |
3280af22 NIS |
3481 | PL_bufptr = s; |
3482 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3483 | |
3484 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3485 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3486 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3487 | (PL_tokenbuf[0] == 'q' && | |
3488 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3489 | |
3490 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3491 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3492 | goto just_a_word; |
3493 | ||
3643fb5f | 3494 | d = s; |
3280af22 | 3495 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3496 | d++; /* no comments skipped here, or s### is misparsed */ |
3497 | ||
3498 | /* Is this a label? */ | |
3280af22 NIS |
3499 | if (!tmp && PL_expect == XSTATE |
3500 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3501 | s = d + 1; |
3280af22 | 3502 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3503 | CLINE; |
3504 | TOKEN(LABEL); | |
3643fb5f CS |
3505 | } |
3506 | ||
3507 | /* Check for keywords */ | |
3280af22 | 3508 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3509 | |
3510 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3511 | if (strnEQ(d,"=>",2)) { |
3512 | CLINE; | |
3280af22 | 3513 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3514 | yylval.opval->op_private = OPpCONST_BARE; |
3515 | TERM(WORD); | |
3516 | } | |
3517 | ||
a0d0e21e | 3518 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3519 | GV *ogv = Nullgv; /* override (winner) */ |
3520 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3521 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3522 | CV *cv; |
3280af22 | 3523 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3524 | (cv = GvCVu(gv))) |
3525 | { | |
3526 | if (GvIMPORTED_CV(gv)) | |
3527 | ogv = gv; | |
3528 | else if (! CvMETHOD(cv)) | |
3529 | hgv = gv; | |
3530 | } | |
3531 | if (!ogv && | |
3280af22 NIS |
3532 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3533 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3534 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3535 | { | |
3536 | ogv = gv; | |
3537 | } | |
3538 | } | |
3539 | if (ogv) { | |
3540 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3541 | } |
3542 | else if (gv && !gvp | |
3543 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3544 | && GvCVu(gv) |
3280af22 | 3545 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3546 | { |
3547 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3548 | } |
56f7f34b CS |
3549 | else { /* no override */ |
3550 | tmp = -tmp; | |
3551 | gv = Nullgv; | |
3552 | gvp = 0; | |
4944e2f7 GS |
3553 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3554 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3555 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3556 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3557 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3558 | } |
a0d0e21e LW |
3559 | } |
3560 | ||
3561 | reserved_word: | |
3562 | switch (tmp) { | |
79072805 LW |
3563 | |
3564 | default: /* not a keyword */ | |
93a17b20 | 3565 | just_a_word: { |
96e4d5b1 | 3566 | SV *sv; |
3280af22 | 3567 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3568 | |
3569 | /* Get the rest if it looks like a package qualifier */ | |
3570 | ||
a0d0e21e | 3571 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3572 | STRLEN morelen; |
3280af22 | 3573 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3574 | TRUE, &morelen); |
3575 | if (!morelen) | |
cea2e8a9 | 3576 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3577 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3578 | len += morelen; |
a0d0e21e | 3579 | } |
8990e307 | 3580 | |
3280af22 NIS |
3581 | if (PL_expect == XOPERATOR) { |
3582 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3583 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3584 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3585 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3586 | } |
3587 | else | |
54310121 | 3588 | no_op("Bareword",s); |
463ee0b2 | 3589 | } |
8990e307 | 3590 | |
c3e0f903 GS |
3591 | /* Look for a subroutine with this name in current package, |
3592 | unless name is "Foo::", in which case Foo is a bearword | |
3593 | (and a package name). */ | |
3594 | ||
3595 | if (len > 2 && | |
3280af22 | 3596 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3597 | { |
599cee73 | 3598 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
cea2e8a9 | 3599 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3600 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3601 | PL_tokenbuf); |
c3e0f903 | 3602 | len -= 2; |
3280af22 | 3603 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3604 | gv = Nullgv; |
3605 | gvp = 0; | |
3606 | } | |
3607 | else { | |
3608 | len = 0; | |
3609 | if (!gv) | |
3280af22 | 3610 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3611 | } |
3612 | ||
3613 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3614 | |
49dc05e3 | 3615 | if (gvp) { |
79cb57f6 | 3616 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3617 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3618 | } |
3619 | else | |
3280af22 | 3620 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3621 | |
a0d0e21e LW |
3622 | /* Presume this is going to be a bareword of some sort. */ |
3623 | ||
3624 | CLINE; | |
49dc05e3 | 3625 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3626 | yylval.opval->op_private = OPpCONST_BARE; |
3627 | ||
c3e0f903 GS |
3628 | /* And if "Foo::", then that's what it certainly is. */ |
3629 | ||
3630 | if (len) | |
3631 | goto safe_bareword; | |
3632 | ||
8990e307 LW |
3633 | /* See if it's the indirect object for a list operator. */ |
3634 | ||
3280af22 NIS |
3635 | if (PL_oldoldbufptr && |
3636 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3637 | (PL_oldoldbufptr == PL_last_lop |
3638 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3639 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3640 | (PL_expect == XREF || |
3641 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3642 | { |
748a9306 LW |
3643 | bool immediate_paren = *s == '('; |
3644 | ||
a0d0e21e LW |
3645 | /* (Now we can afford to cross potential line boundary.) */ |
3646 | s = skipspace(s); | |
3647 | ||
3648 | /* Two barewords in a row may indicate method call. */ | |
3649 | ||
834a4ddd | 3650 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3651 | return tmp; |
3652 | ||
3653 | /* If not a declared subroutine, it's an indirect object. */ | |
3654 | /* (But it's an indir obj regardless for sort.) */ | |
3655 | ||
3280af22 | 3656 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3657 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3658 | (PL_last_lop_op != OP_MAPSTART && | |
3659 | PL_last_lop_op != OP_GREPSTART)) | |
3660 | { | |
3280af22 | 3661 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3662 | goto bareword; |
93a17b20 LW |
3663 | } |
3664 | } | |
8990e307 LW |
3665 | |
3666 | /* If followed by a paren, it's certainly a subroutine. */ | |
3667 | ||
3280af22 | 3668 | PL_expect = XOPERATOR; |
8990e307 | 3669 | s = skipspace(s); |
93a17b20 | 3670 | if (*s == '(') { |
79072805 | 3671 | CLINE; |
96e4d5b1 | 3672 | if (gv && GvCVu(gv)) { |
3673 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3674 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3675 | s = d + 1; |
3676 | goto its_constant; | |
3677 | } | |
3678 | } | |
3280af22 NIS |
3679 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3680 | PL_expect = XOPERATOR; | |
93a17b20 | 3681 | force_next(WORD); |
c07a80fd | 3682 | yylval.ival = 0; |
463ee0b2 | 3683 | TOKEN('&'); |
79072805 | 3684 | } |
93a17b20 | 3685 | |
a0d0e21e | 3686 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3687 | |
8ebc5c01 | 3688 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3689 | PL_last_lop = PL_oldbufptr; |
3690 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3691 | PREBLOCK(METHOD); |
463ee0b2 LW |
3692 | } |
3693 | ||
8990e307 LW |
3694 | /* If followed by a bareword, see if it looks like indir obj. */ |
3695 | ||
834a4ddd | 3696 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3697 | return tmp; |
93a17b20 | 3698 | |
8990e307 LW |
3699 | /* Not a method, so call it a subroutine (if defined) */ |
3700 | ||
8ebc5c01 | 3701 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3702 | CV* cv; |
0453d815 PM |
3703 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3704 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3705 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3706 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3707 | /* Check for a constant sub */ |
46fc3d4c | 3708 | cv = GvCV(gv); |
96e4d5b1 | 3709 | if ((sv = cv_const_sv(cv))) { |
3710 | its_constant: | |
3711 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3712 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3713 | yylval.opval->op_private = 0; | |
3714 | TOKEN(WORD); | |
89bfa8cd | 3715 | } |
3716 | ||
a5f75d66 AD |
3717 | /* Resolve to GV now. */ |
3718 | op_free(yylval.opval); | |
3719 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3720 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3721 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3722 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3723 | /* Is there a prototype? */ |
3724 | if (SvPOK(cv)) { | |
3725 | STRLEN len; | |
7a52d87a | 3726 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3727 | if (!len) |
3728 | TERM(FUNC0SUB); | |
7a52d87a | 3729 | if (strEQ(proto, "$")) |
4633a7c4 | 3730 | OPERATOR(UNIOPSUB); |
7a52d87a | 3731 | if (*proto == '&' && *s == '{') { |
3280af22 | 3732 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3733 | PREBLOCK(LSTOPSUB); |
3734 | } | |
a9ef352a | 3735 | } |
3280af22 NIS |
3736 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3737 | PL_expect = XTERM; | |
8990e307 LW |
3738 | force_next(WORD); |
3739 | TOKEN(NOAMP); | |
3740 | } | |
748a9306 | 3741 | |
8990e307 LW |
3742 | /* Call it a bare word */ |
3743 | ||
5603f27d GS |
3744 | if (PL_hints & HINT_STRICT_SUBS) |
3745 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3746 | else { | |
3747 | bareword: | |
3748 | if (ckWARN(WARN_RESERVED)) { | |
3749 | if (lastchar != '-') { | |
3750 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3751 | if (!*d) | |
cea2e8a9 | 3752 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3753 | PL_tokenbuf); |
3754 | } | |
748a9306 LW |
3755 | } |
3756 | } | |
c3e0f903 GS |
3757 | |
3758 | safe_bareword: | |
f248d071 | 3759 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3760 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3761 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3762 | lastchar, PL_tokenbuf); |
0453d815 PM |
3763 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3764 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3765 | lastchar, lastchar); |
3766 | } | |
93a17b20 | 3767 | TOKEN(WORD); |
79072805 | 3768 | } |
79072805 | 3769 | |
68dc0745 | 3770 | case KEY___FILE__: |
46fc3d4c | 3771 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3772 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3773 | TERM(THING); |
3774 | ||
79072805 | 3775 | case KEY___LINE__: |
cf2093f6 | 3776 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3777 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3778 | TERM(THING); |
68dc0745 | 3779 | |
3780 | case KEY___PACKAGE__: | |
3781 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3782 | (PL_curstash |
3783 | ? newSVsv(PL_curstname) | |
3784 | : &PL_sv_undef)); | |
79072805 | 3785 | TERM(THING); |
79072805 | 3786 | |
e50aee73 | 3787 | case KEY___DATA__: |
79072805 LW |
3788 | case KEY___END__: { |
3789 | GV *gv; | |
79072805 LW |
3790 | |
3791 | /*SUPPRESS 560*/ | |
3280af22 | 3792 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3793 | char *pname = "main"; |
3280af22 NIS |
3794 | if (PL_tokenbuf[2] == 'D') |
3795 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3796 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3797 | GvMULTI_on(gv); |
79072805 | 3798 | if (!GvIO(gv)) |
a0d0e21e | 3799 | GvIOp(gv) = newIO(); |
3280af22 | 3800 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3801 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3802 | { | |
3280af22 | 3803 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3804 | fcntl(fd,F_SETFD,fd >= 3); |
3805 | } | |
79072805 | 3806 | #endif |
fd049845 | 3807 | /* Mark this internal pseudo-handle as clean */ |
3808 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3809 | if (PL_preprocess) |
a0d0e21e | 3810 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3811 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3812 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3813 | else |
a0d0e21e | 3814 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3815 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3816 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 3817 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 3818 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
3819 | if (PL_bufend-PL_bufptr > 2 |
3820 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
3821 | { |
3822 | Off_t loc = 0; | |
3823 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3824 | loc = PerlIO_tell(PL_rsfp); | |
3825 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3826 | } | |
3827 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3828 | #if defined(__BORLANDC__) | |
3829 | /* XXX see note in do_binmode() */ | |
3830 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3831 | #endif | |
3832 | if (loc > 0) | |
3833 | PerlIO_seek(PL_rsfp, loc, 0); | |
3834 | } | |
3835 | } | |
3836 | #endif | |
3280af22 | 3837 | PL_rsfp = Nullfp; |
79072805 LW |
3838 | } |
3839 | goto fake_eof; | |
e929a76b | 3840 | } |
de3bb511 | 3841 | |
8990e307 | 3842 | case KEY_AUTOLOAD: |
ed6116ce | 3843 | case KEY_DESTROY: |
79072805 LW |
3844 | case KEY_BEGIN: |
3845 | case KEY_END: | |
4f25aa18 | 3846 | case KEY_STOP: |
7d07dbc2 | 3847 | case KEY_INIT: |
3280af22 NIS |
3848 | if (PL_expect == XSTATE) { |
3849 | s = PL_bufptr; | |
93a17b20 | 3850 | goto really_sub; |
79072805 LW |
3851 | } |
3852 | goto just_a_word; | |
3853 | ||
a0d0e21e LW |
3854 | case KEY_CORE: |
3855 | if (*s == ':' && s[1] == ':') { | |
3856 | s += 2; | |
748a9306 | 3857 | d = s; |
3280af22 NIS |
3858 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3859 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3860 | if (tmp < 0) |
3861 | tmp = -tmp; | |
3862 | goto reserved_word; | |
3863 | } | |
3864 | goto just_a_word; | |
3865 | ||
463ee0b2 LW |
3866 | case KEY_abs: |
3867 | UNI(OP_ABS); | |
3868 | ||
79072805 LW |
3869 | case KEY_alarm: |
3870 | UNI(OP_ALARM); | |
3871 | ||
3872 | case KEY_accept: | |
a0d0e21e | 3873 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3874 | |
463ee0b2 LW |
3875 | case KEY_and: |
3876 | OPERATOR(ANDOP); | |
3877 | ||
79072805 | 3878 | case KEY_atan2: |
a0d0e21e | 3879 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3880 | |
79072805 | 3881 | case KEY_bind: |
a0d0e21e | 3882 | LOP(OP_BIND,XTERM); |
79072805 LW |
3883 | |
3884 | case KEY_binmode: | |
3885 | UNI(OP_BINMODE); | |
3886 | ||
3887 | case KEY_bless: | |
a0d0e21e | 3888 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3889 | |
3890 | case KEY_chop: | |
3891 | UNI(OP_CHOP); | |
3892 | ||
3893 | case KEY_continue: | |
3894 | PREBLOCK(CONTINUE); | |
3895 | ||
3896 | case KEY_chdir: | |
85e6fe83 | 3897 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3898 | UNI(OP_CHDIR); |
3899 | ||
3900 | case KEY_close: | |
3901 | UNI(OP_CLOSE); | |
3902 | ||
3903 | case KEY_closedir: | |
3904 | UNI(OP_CLOSEDIR); | |
3905 | ||
3906 | case KEY_cmp: | |
3907 | Eop(OP_SCMP); | |
3908 | ||
3909 | case KEY_caller: | |
3910 | UNI(OP_CALLER); | |
3911 | ||
3912 | case KEY_crypt: | |
3913 | #ifdef FCRYPT | |
f4c556ac GS |
3914 | if (!PL_cryptseen) { |
3915 | PL_cryptseen = TRUE; | |
de3bb511 | 3916 | init_des(); |
f4c556ac | 3917 | } |
a687059c | 3918 | #endif |
a0d0e21e | 3919 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3920 | |
3921 | case KEY_chmod: | |
599cee73 | 3922 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3923 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 3924 | if (*d != '0' && isDIGIT(*d)) |
4438c4b7 JH |
3925 | Perl_warner(aTHX_ WARN_OCTAL, |
3926 | "chmod: mode argument is missing initial 0"); | |
748a9306 | 3927 | } |
a0d0e21e | 3928 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3929 | |
3930 | case KEY_chown: | |
a0d0e21e | 3931 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3932 | |
3933 | case KEY_connect: | |
a0d0e21e | 3934 | LOP(OP_CONNECT,XTERM); |
79072805 | 3935 | |
463ee0b2 LW |
3936 | case KEY_chr: |
3937 | UNI(OP_CHR); | |
3938 | ||
79072805 LW |
3939 | case KEY_cos: |
3940 | UNI(OP_COS); | |
3941 | ||
3942 | case KEY_chroot: | |
3943 | UNI(OP_CHROOT); | |
3944 | ||
3945 | case KEY_do: | |
3946 | s = skipspace(s); | |
3947 | if (*s == '{') | |
a0d0e21e | 3948 | PRETERMBLOCK(DO); |
79072805 | 3949 | if (*s != '\'') |
a0d0e21e | 3950 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3951 | OPERATOR(DO); |
79072805 LW |
3952 | |
3953 | case KEY_die: | |
3280af22 | 3954 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3955 | LOP(OP_DIE,XTERM); |
79072805 LW |
3956 | |
3957 | case KEY_defined: | |
3958 | UNI(OP_DEFINED); | |
3959 | ||
3960 | case KEY_delete: | |
a0d0e21e | 3961 | UNI(OP_DELETE); |
79072805 LW |
3962 | |
3963 | case KEY_dbmopen: | |
a0d0e21e LW |
3964 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3965 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3966 | |
3967 | case KEY_dbmclose: | |
3968 | UNI(OP_DBMCLOSE); | |
3969 | ||
3970 | case KEY_dump: | |
a0d0e21e | 3971 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3972 | LOOPX(OP_DUMP); |
3973 | ||
3974 | case KEY_else: | |
3975 | PREBLOCK(ELSE); | |
3976 | ||
3977 | case KEY_elsif: | |
57843af0 | 3978 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
3979 | OPERATOR(ELSIF); |
3980 | ||
3981 | case KEY_eq: | |
3982 | Eop(OP_SEQ); | |
3983 | ||
a0d0e21e LW |
3984 | case KEY_exists: |
3985 | UNI(OP_EXISTS); | |
3986 | ||
79072805 LW |
3987 | case KEY_exit: |
3988 | UNI(OP_EXIT); | |
3989 | ||
3990 | case KEY_eval: | |
79072805 | 3991 | s = skipspace(s); |
3280af22 | 3992 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3993 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3994 | |
3995 | case KEY_eof: | |
3996 | UNI(OP_EOF); | |
3997 | ||
3998 | case KEY_exp: | |
3999 | UNI(OP_EXP); | |
4000 | ||
4001 | case KEY_each: | |
4002 | UNI(OP_EACH); | |
4003 | ||
4004 | case KEY_exec: | |
4005 | set_csh(); | |
a0d0e21e | 4006 | LOP(OP_EXEC,XREF); |
79072805 LW |
4007 | |
4008 | case KEY_endhostent: | |
4009 | FUN0(OP_EHOSTENT); | |
4010 | ||
4011 | case KEY_endnetent: | |
4012 | FUN0(OP_ENETENT); | |
4013 | ||
4014 | case KEY_endservent: | |
4015 | FUN0(OP_ESERVENT); | |
4016 | ||
4017 | case KEY_endprotoent: | |
4018 | FUN0(OP_EPROTOENT); | |
4019 | ||
4020 | case KEY_endpwent: | |
4021 | FUN0(OP_EPWENT); | |
4022 | ||
4023 | case KEY_endgrent: | |
4024 | FUN0(OP_EGRENT); | |
4025 | ||
4026 | case KEY_for: | |
4027 | case KEY_foreach: | |
57843af0 | 4028 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4029 | s = skipspace(s); |
834a4ddd | 4030 | if (PL_expect == XSTATE && isIDFIRST_lazy(s)) { |
55497cff | 4031 | char *p = s; |
3280af22 | 4032 | if ((PL_bufend - p) >= 3 && |
55497cff | 4033 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4034 | p += 2; | |
77ca0c92 LW |
4035 | else if ((PL_bufend - p) >= 4 && |
4036 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4037 | p += 3; | |
55497cff | 4038 | p = skipspace(p); |
77ca0c92 LW |
4039 | if (isIDFIRST_lazy(p)) { |
4040 | p = scan_ident(p, PL_bufend, | |
4041 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4042 | p = skipspace(p); | |
4043 | } | |
4044 | if (*p != '$') | |
cea2e8a9 | 4045 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4046 | } |
79072805 LW |
4047 | OPERATOR(FOR); |
4048 | ||
4049 | case KEY_formline: | |
a0d0e21e | 4050 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4051 | |
4052 | case KEY_fork: | |
4053 | FUN0(OP_FORK); | |
4054 | ||
4055 | case KEY_fcntl: | |
a0d0e21e | 4056 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4057 | |
4058 | case KEY_fileno: | |
4059 | UNI(OP_FILENO); | |
4060 | ||
4061 | case KEY_flock: | |
a0d0e21e | 4062 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4063 | |
4064 | case KEY_gt: | |
4065 | Rop(OP_SGT); | |
4066 | ||
4067 | case KEY_ge: | |
4068 | Rop(OP_SGE); | |
4069 | ||
4070 | case KEY_grep: | |
a0d0e21e | 4071 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
4072 | |
4073 | case KEY_goto: | |
a0d0e21e | 4074 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4075 | LOOPX(OP_GOTO); |
4076 | ||
4077 | case KEY_gmtime: | |
4078 | UNI(OP_GMTIME); | |
4079 | ||
4080 | case KEY_getc: | |
4081 | UNI(OP_GETC); | |
4082 | ||
4083 | case KEY_getppid: | |
4084 | FUN0(OP_GETPPID); | |
4085 | ||
4086 | case KEY_getpgrp: | |
4087 | UNI(OP_GETPGRP); | |
4088 | ||
4089 | case KEY_getpriority: | |
a0d0e21e | 4090 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4091 | |
4092 | case KEY_getprotobyname: | |
4093 | UNI(OP_GPBYNAME); | |
4094 | ||
4095 | case KEY_getprotobynumber: | |
a0d0e21e | 4096 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4097 | |
4098 | case KEY_getprotoent: | |
4099 | FUN0(OP_GPROTOENT); | |
4100 | ||
4101 | case KEY_getpwent: | |
4102 | FUN0(OP_GPWENT); | |
4103 | ||
4104 | case KEY_getpwnam: | |
ff68c719 | 4105 | UNI(OP_GPWNAM); |
79072805 LW |
4106 | |
4107 | case KEY_getpwuid: | |
ff68c719 | 4108 | UNI(OP_GPWUID); |
79072805 LW |
4109 | |
4110 | case KEY_getpeername: | |
4111 | UNI(OP_GETPEERNAME); | |
4112 | ||
4113 | case KEY_gethostbyname: | |
4114 | UNI(OP_GHBYNAME); | |
4115 | ||
4116 | case KEY_gethostbyaddr: | |
a0d0e21e | 4117 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4118 | |
4119 | case KEY_gethostent: | |
4120 | FUN0(OP_GHOSTENT); | |
4121 | ||
4122 | case KEY_getnetbyname: | |
4123 | UNI(OP_GNBYNAME); | |
4124 | ||
4125 | case KEY_getnetbyaddr: | |
a0d0e21e | 4126 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4127 | |
4128 | case KEY_getnetent: | |
4129 | FUN0(OP_GNETENT); | |
4130 | ||
4131 | case KEY_getservbyname: | |
a0d0e21e | 4132 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4133 | |
4134 | case KEY_getservbyport: | |
a0d0e21e | 4135 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4136 | |
4137 | case KEY_getservent: | |
4138 | FUN0(OP_GSERVENT); | |
4139 | ||
4140 | case KEY_getsockname: | |
4141 | UNI(OP_GETSOCKNAME); | |
4142 | ||
4143 | case KEY_getsockopt: | |
a0d0e21e | 4144 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4145 | |
4146 | case KEY_getgrent: | |
4147 | FUN0(OP_GGRENT); | |
4148 | ||
4149 | case KEY_getgrnam: | |
ff68c719 | 4150 | UNI(OP_GGRNAM); |
79072805 LW |
4151 | |
4152 | case KEY_getgrgid: | |
ff68c719 | 4153 | UNI(OP_GGRGID); |
79072805 LW |
4154 | |
4155 | case KEY_getlogin: | |
4156 | FUN0(OP_GETLOGIN); | |
4157 | ||
93a17b20 | 4158 | case KEY_glob: |
a0d0e21e LW |
4159 | set_csh(); |
4160 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4161 | |
79072805 LW |
4162 | case KEY_hex: |
4163 | UNI(OP_HEX); | |
4164 | ||
4165 | case KEY_if: | |
57843af0 | 4166 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4167 | OPERATOR(IF); |
4168 | ||
4169 | case KEY_index: | |
a0d0e21e | 4170 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4171 | |
4172 | case KEY_int: | |
4173 | UNI(OP_INT); | |
4174 | ||
4175 | case KEY_ioctl: | |
a0d0e21e | 4176 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4177 | |
4178 | case KEY_join: | |
a0d0e21e | 4179 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4180 | |
4181 | case KEY_keys: | |
4182 | UNI(OP_KEYS); | |
4183 | ||
4184 | case KEY_kill: | |
a0d0e21e | 4185 | LOP(OP_KILL,XTERM); |
79072805 LW |
4186 | |
4187 | case KEY_last: | |
a0d0e21e | 4188 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4189 | LOOPX(OP_LAST); |
a0d0e21e | 4190 | |
79072805 LW |
4191 | case KEY_lc: |
4192 | UNI(OP_LC); | |
4193 | ||
4194 | case KEY_lcfirst: | |
4195 | UNI(OP_LCFIRST); | |
4196 | ||
4197 | case KEY_local: | |
09bef843 | 4198 | yylval.ival = 0; |
79072805 LW |
4199 | OPERATOR(LOCAL); |
4200 | ||
4201 | case KEY_length: | |
4202 | UNI(OP_LENGTH); | |
4203 | ||
4204 | case KEY_lt: | |
4205 | Rop(OP_SLT); | |
4206 | ||
4207 | case KEY_le: | |
4208 | Rop(OP_SLE); | |
4209 | ||
4210 | case KEY_localtime: | |
4211 | UNI(OP_LOCALTIME); | |
4212 | ||
4213 | case KEY_log: | |
4214 | UNI(OP_LOG); | |
4215 | ||
4216 | case KEY_link: | |
a0d0e21e | 4217 | LOP(OP_LINK,XTERM); |
79072805 LW |
4218 | |
4219 | case KEY_listen: | |
a0d0e21e | 4220 | LOP(OP_LISTEN,XTERM); |
79072805 | 4221 | |
c0329465 MB |
4222 | case KEY_lock: |
4223 | UNI(OP_LOCK); | |
4224 | ||
79072805 LW |
4225 | case KEY_lstat: |
4226 | UNI(OP_LSTAT); | |
4227 | ||
4228 | case KEY_m: | |
8782bef2 | 4229 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4230 | TERM(sublex_start()); |
4231 | ||
a0d0e21e | 4232 | case KEY_map: |
4e4e412b GS |
4233 | LOP(OP_MAPSTART, *s == '(' ? XTERM : XREF); |
4234 | ||
79072805 | 4235 | case KEY_mkdir: |
a0d0e21e | 4236 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4237 | |
4238 | case KEY_msgctl: | |
a0d0e21e | 4239 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4240 | |
4241 | case KEY_msgget: | |
a0d0e21e | 4242 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4243 | |
4244 | case KEY_msgrcv: | |
a0d0e21e | 4245 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4246 | |
4247 | case KEY_msgsnd: | |
a0d0e21e | 4248 | LOP(OP_MSGSND,XTERM); |
79072805 | 4249 | |
77ca0c92 | 4250 | case KEY_our: |
93a17b20 | 4251 | case KEY_my: |
77ca0c92 | 4252 | PL_in_my = tmp; |
c750a3ec | 4253 | s = skipspace(s); |
834a4ddd | 4254 | if (isIDFIRST_lazy(s)) { |
3280af22 | 4255 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4256 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4257 | goto really_sub; | |
3280af22 NIS |
4258 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4259 | if (!PL_in_my_stash) { | |
c750a3ec | 4260 | char tmpbuf[1024]; |
3280af22 NIS |
4261 | PL_bufptr = s; |
4262 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4263 | yyerror(tmpbuf); |
4264 | } | |
4265 | } | |
09bef843 | 4266 | yylval.ival = 1; |
55497cff | 4267 | OPERATOR(MY); |
93a17b20 | 4268 | |
79072805 | 4269 | case KEY_next: |
a0d0e21e | 4270 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4271 | LOOPX(OP_NEXT); |
4272 | ||
4273 | case KEY_ne: | |
4274 | Eop(OP_SNE); | |
4275 | ||
a0d0e21e | 4276 | case KEY_no: |
3280af22 | 4277 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4278 | yyerror("\"no\" not allowed in expression"); |
4279 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4280 | s = force_version(s); |
a0d0e21e LW |
4281 | yylval.ival = 0; |
4282 | OPERATOR(USE); | |
4283 | ||
4284 | case KEY_not: | |
2d2e263d LW |
4285 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4286 | FUN1(OP_NOT); | |
4287 | else | |
4288 | OPERATOR(NOTOP); | |
a0d0e21e | 4289 | |
79072805 | 4290 | case KEY_open: |
93a17b20 | 4291 | s = skipspace(s); |
834a4ddd | 4292 | if (isIDFIRST_lazy(s)) { |
93a17b20 | 4293 | char *t; |
834a4ddd | 4294 | for (d = s; isALNUM_lazy(d); d++) ; |
93a17b20 | 4295 | t = skipspace(d); |
0453d815 PM |
4296 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_AMBIGUOUS)) |
4297 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
4298 | "Precedence problem: open %.*s should be open(%.*s)", | |
4299 | d-s,s, d-s,s); | |
93a17b20 | 4300 | } |
a0d0e21e | 4301 | LOP(OP_OPEN,XTERM); |
79072805 | 4302 | |
463ee0b2 | 4303 | case KEY_or: |
a0d0e21e | 4304 | yylval.ival = OP_OR; |
463ee0b2 LW |
4305 | OPERATOR(OROP); |
4306 | ||
79072805 LW |
4307 | case KEY_ord: |
4308 | UNI(OP_ORD); | |
4309 | ||
4310 | case KEY_oct: | |
4311 | UNI(OP_OCT); | |
4312 | ||
4313 | case KEY_opendir: | |
a0d0e21e | 4314 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4315 | |
4316 | case KEY_print: | |
3280af22 | 4317 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4318 | LOP(OP_PRINT,XREF); |
79072805 LW |
4319 | |
4320 | case KEY_printf: | |
3280af22 | 4321 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4322 | LOP(OP_PRTF,XREF); |
79072805 | 4323 | |
c07a80fd | 4324 | case KEY_prototype: |
4325 | UNI(OP_PROTOTYPE); | |
4326 | ||
79072805 | 4327 | case KEY_push: |
a0d0e21e | 4328 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4329 | |
4330 | case KEY_pop: | |
4331 | UNI(OP_POP); | |
4332 | ||
a0d0e21e LW |
4333 | case KEY_pos: |
4334 | UNI(OP_POS); | |
4335 | ||
79072805 | 4336 | case KEY_pack: |
a0d0e21e | 4337 | LOP(OP_PACK,XTERM); |
79072805 LW |
4338 | |
4339 | case KEY_package: | |
a0d0e21e | 4340 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4341 | OPERATOR(PACKAGE); |
4342 | ||
4343 | case KEY_pipe: | |
a0d0e21e | 4344 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4345 | |
4346 | case KEY_q: | |
09bef843 | 4347 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4348 | if (!s) |
85e6fe83 | 4349 | missingterm((char*)0); |
79072805 LW |
4350 | yylval.ival = OP_CONST; |
4351 | TERM(sublex_start()); | |
4352 | ||
a0d0e21e LW |
4353 | case KEY_quotemeta: |
4354 | UNI(OP_QUOTEMETA); | |
4355 | ||
8990e307 | 4356 | case KEY_qw: |
09bef843 | 4357 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4358 | if (!s) |
85e6fe83 | 4359 | missingterm((char*)0); |
8127e0e3 GS |
4360 | force_next(')'); |
4361 | if (SvCUR(PL_lex_stuff)) { | |
4362 | OP *words = Nullop; | |
4363 | int warned = 0; | |
3280af22 | 4364 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4365 | while (len) { |
4366 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4367 | if (len) { | |
4368 | char *b = d; | |
4369 | if (!warned && ckWARN(WARN_SYNTAX)) { | |
4370 | for (; !isSPACE(*d) && len; --len, ++d) { | |
4371 | if (*d == ',') { | |
cea2e8a9 | 4372 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4373 | "Possible attempt to separate words with commas"); |
4374 | ++warned; | |
4375 | } | |
4376 | else if (*d == '#') { | |
cea2e8a9 | 4377 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4378 | "Possible attempt to put comments in qw() list"); |
4379 | ++warned; | |
4380 | } | |
4381 | } | |
4382 | } | |
4383 | else { | |
4384 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4385 | } | |
4386 | words = append_elem(OP_LIST, words, | |
4387 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4388 | } |
4389 | } | |
8127e0e3 GS |
4390 | if (words) { |
4391 | PL_nextval[PL_nexttoke].opval = words; | |
4392 | force_next(THING); | |
4393 | } | |
55497cff | 4394 | } |
8127e0e3 GS |
4395 | if (PL_lex_stuff) |
4396 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4397 | PL_lex_stuff = Nullsv; |
3280af22 | 4398 | PL_expect = XTERM; |
8127e0e3 | 4399 | TOKEN('('); |
8990e307 | 4400 | |
79072805 | 4401 | case KEY_qq: |
09bef843 | 4402 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4403 | if (!s) |
85e6fe83 | 4404 | missingterm((char*)0); |
a0d0e21e | 4405 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4406 | if (SvIVX(PL_lex_stuff) == '\'') |
4407 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4408 | TERM(sublex_start()); |
4409 | ||
8782bef2 GB |
4410 | case KEY_qr: |
4411 | s = scan_pat(s,OP_QR); | |
4412 | TERM(sublex_start()); | |
4413 | ||
79072805 | 4414 | case KEY_qx: |
09bef843 | 4415 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4416 | if (!s) |
85e6fe83 | 4417 | missingterm((char*)0); |
79072805 LW |
4418 | yylval.ival = OP_BACKTICK; |
4419 | set_csh(); | |
4420 | TERM(sublex_start()); | |
4421 | ||
4422 | case KEY_return: | |
4423 | OLDLOP(OP_RETURN); | |
4424 | ||
4425 | case KEY_require: | |
a7cb1f99 GS |
4426 | s = skipspace(s); |
4427 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4428 | s = force_version(s); | |
4429 | } | |
4430 | else { | |
4431 | *PL_tokenbuf = '\0'; | |
4432 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
4433 | if (isIDFIRST_lazy(PL_tokenbuf)) | |
4434 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); | |
4435 | else if (*s == '<') | |
4436 | yyerror("<> should be quotes"); | |
4437 | } | |
463ee0b2 | 4438 | UNI(OP_REQUIRE); |
79072805 LW |
4439 | |
4440 | case KEY_reset: | |
4441 | UNI(OP_RESET); | |
4442 | ||
4443 | case KEY_redo: | |
a0d0e21e | 4444 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4445 | LOOPX(OP_REDO); |
4446 | ||
4447 | case KEY_rename: | |
a0d0e21e | 4448 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4449 | |
4450 | case KEY_rand: | |
4451 | UNI(OP_RAND); | |
4452 | ||
4453 | case KEY_rmdir: | |
4454 | UNI(OP_RMDIR); | |
4455 | ||
4456 | case KEY_rindex: | |
a0d0e21e | 4457 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4458 | |
4459 | case KEY_read: | |
a0d0e21e | 4460 | LOP(OP_READ,XTERM); |
79072805 LW |
4461 | |
4462 | case KEY_readdir: | |
4463 | UNI(OP_READDIR); | |
4464 | ||
93a17b20 LW |
4465 | case KEY_readline: |
4466 | set_csh(); | |
4467 | UNI(OP_READLINE); | |
4468 | ||
4469 | case KEY_readpipe: | |
4470 | set_csh(); | |
4471 | UNI(OP_BACKTICK); | |
4472 | ||
79072805 LW |
4473 | case KEY_rewinddir: |
4474 | UNI(OP_REWINDDIR); | |
4475 | ||
4476 | case KEY_recv: | |
a0d0e21e | 4477 | LOP(OP_RECV,XTERM); |
79072805 LW |
4478 | |
4479 | case KEY_reverse: | |
a0d0e21e | 4480 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4481 | |
4482 | case KEY_readlink: | |
4483 | UNI(OP_READLINK); | |
4484 | ||
4485 | case KEY_ref: | |
4486 | UNI(OP_REF); | |
4487 | ||
4488 | case KEY_s: | |
4489 | s = scan_subst(s); | |
4490 | if (yylval.opval) | |
4491 | TERM(sublex_start()); | |
4492 | else | |
4493 | TOKEN(1); /* force error */ | |
4494 | ||
a0d0e21e LW |
4495 | case KEY_chomp: |
4496 | UNI(OP_CHOMP); | |
4497 | ||
79072805 LW |
4498 | case KEY_scalar: |
4499 | UNI(OP_SCALAR); | |
4500 | ||
4501 | case KEY_select: | |
a0d0e21e | 4502 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4503 | |
4504 | case KEY_seek: | |
a0d0e21e | 4505 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4506 | |
4507 | case KEY_semctl: | |
a0d0e21e | 4508 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4509 | |
4510 | case KEY_semget: | |
a0d0e21e | 4511 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4512 | |
4513 | case KEY_semop: | |
a0d0e21e | 4514 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4515 | |
4516 | case KEY_send: | |
a0d0e21e | 4517 | LOP(OP_SEND,XTERM); |
79072805 LW |
4518 | |
4519 | case KEY_setpgrp: | |
a0d0e21e | 4520 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4521 | |
4522 | case KEY_setpriority: | |
a0d0e21e | 4523 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4524 | |
4525 | case KEY_sethostent: | |
ff68c719 | 4526 | UNI(OP_SHOSTENT); |
79072805 LW |
4527 | |
4528 | case KEY_setnetent: | |
ff68c719 | 4529 | UNI(OP_SNETENT); |
79072805 LW |
4530 | |
4531 | case KEY_setservent: | |
ff68c719 | 4532 | UNI(OP_SSERVENT); |
79072805 LW |
4533 | |
4534 | case KEY_setprotoent: | |
ff68c719 | 4535 | UNI(OP_SPROTOENT); |
79072805 LW |
4536 | |
4537 | case KEY_setpwent: | |
4538 | FUN0(OP_SPWENT); | |
4539 | ||
4540 | case KEY_setgrent: | |
4541 | FUN0(OP_SGRENT); | |
4542 | ||
4543 | case KEY_seekdir: | |
a0d0e21e | 4544 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4545 | |
4546 | case KEY_setsockopt: | |
a0d0e21e | 4547 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4548 | |
4549 | case KEY_shift: | |
4550 | UNI(OP_SHIFT); | |
4551 | ||
4552 | case KEY_shmctl: | |
a0d0e21e | 4553 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4554 | |
4555 | case KEY_shmget: | |
a0d0e21e | 4556 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4557 | |
4558 | case KEY_shmread: | |
a0d0e21e | 4559 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4560 | |
4561 | case KEY_shmwrite: | |
a0d0e21e | 4562 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4563 | |
4564 | case KEY_shutdown: | |
a0d0e21e | 4565 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4566 | |
4567 | case KEY_sin: | |
4568 | UNI(OP_SIN); | |
4569 | ||
4570 | case KEY_sleep: | |
4571 | UNI(OP_SLEEP); | |
4572 | ||
4573 | case KEY_socket: | |
a0d0e21e | 4574 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4575 | |
4576 | case KEY_socketpair: | |
a0d0e21e | 4577 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4578 | |
4579 | case KEY_sort: | |
3280af22 | 4580 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4581 | s = skipspace(s); |
4582 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4583 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4584 | PL_expect = XTERM; |
15f0808c | 4585 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4586 | LOP(OP_SORT,XREF); |
79072805 LW |
4587 | |
4588 | case KEY_split: | |
a0d0e21e | 4589 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4590 | |
4591 | case KEY_sprintf: | |
a0d0e21e | 4592 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4593 | |
4594 | case KEY_splice: | |
a0d0e21e | 4595 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4596 | |
4597 | case KEY_sqrt: | |
4598 | UNI(OP_SQRT); | |
4599 | ||
4600 | case KEY_srand: | |
4601 | UNI(OP_SRAND); | |
4602 | ||
4603 | case KEY_stat: | |
4604 | UNI(OP_STAT); | |
4605 | ||
4606 | case KEY_study: | |
79072805 LW |
4607 | UNI(OP_STUDY); |
4608 | ||
4609 | case KEY_substr: | |
a0d0e21e | 4610 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4611 | |
4612 | case KEY_format: | |
4613 | case KEY_sub: | |
93a17b20 | 4614 | really_sub: |
09bef843 | 4615 | { |
3280af22 | 4616 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4617 | SSize_t tboffset; |
09bef843 SB |
4618 | expectation attrful; |
4619 | bool have_name, have_proto; | |
4620 | int key = tmp; | |
4621 | ||
4622 | s = skipspace(s); | |
4623 | ||
4624 | if (isIDFIRST_lazy(s) || *s == '\'' || | |
4625 | (*s == ':' && s[1] == ':')) | |
4626 | { | |
4627 | PL_expect = XBLOCK; | |
4628 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4629 | /* remember buffer pos'n for later force_word */ |
4630 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4631 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4632 | if (strchr(tmpbuf, ':')) | |
4633 | sv_setpv(PL_subname, tmpbuf); | |
4634 | else { | |
4635 | sv_setsv(PL_subname,PL_curstname); | |
4636 | sv_catpvn(PL_subname,"::",2); | |
4637 | sv_catpvn(PL_subname,tmpbuf,len); | |
4638 | } | |
4639 | s = skipspace(d); | |
4640 | have_name = TRUE; | |
4641 | } | |
463ee0b2 | 4642 | else { |
09bef843 SB |
4643 | if (key == KEY_my) |
4644 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4645 | PL_expect = XTERMBLOCK; | |
4646 | attrful = XATTRTERM; | |
4647 | sv_setpv(PL_subname,"?"); | |
4648 | have_name = FALSE; | |
463ee0b2 | 4649 | } |
4633a7c4 | 4650 | |
09bef843 SB |
4651 | if (key == KEY_format) { |
4652 | if (*s == '=') | |
4653 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4654 | if (have_name) | |
b1b65b59 JH |
4655 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4656 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4657 | OPERATOR(FORMAT); |
4658 | } | |
79072805 | 4659 | |
09bef843 SB |
4660 | /* Look for a prototype */ |
4661 | if (*s == '(') { | |
4662 | char *p; | |
4663 | ||
4664 | s = scan_str(s,FALSE,FALSE); | |
4665 | if (!s) { | |
4666 | if (PL_lex_stuff) | |
4667 | SvREFCNT_dec(PL_lex_stuff); | |
4668 | PL_lex_stuff = Nullsv; | |
4669 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4670 | } | |
4671 | /* strip spaces */ | |
4672 | d = SvPVX(PL_lex_stuff); | |
4673 | tmp = 0; | |
4674 | for (p = d; *p; ++p) { | |
4675 | if (!isSPACE(*p)) | |
4676 | d[tmp++] = *p; | |
4677 | } | |
4678 | d[tmp] = '\0'; | |
4679 | SvCUR(PL_lex_stuff) = tmp; | |
4680 | have_proto = TRUE; | |
68dc0745 | 4681 | |
09bef843 | 4682 | s = skipspace(s); |
4633a7c4 | 4683 | } |
09bef843 SB |
4684 | else |
4685 | have_proto = FALSE; | |
4686 | ||
4687 | if (*s == ':' && s[1] != ':') | |
4688 | PL_expect = attrful; | |
4689 | ||
4690 | if (have_proto) { | |
b1b65b59 JH |
4691 | PL_nextval[PL_nexttoke].opval = |
4692 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4693 | PL_lex_stuff = Nullsv; |
4694 | force_next(THING); | |
68dc0745 | 4695 | } |
09bef843 SB |
4696 | if (!have_name) { |
4697 | sv_setpv(PL_subname,"__ANON__"); | |
4698 | TOKEN(ANONSUB); | |
4633a7c4 | 4699 | } |
b1b65b59 JH |
4700 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4701 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4702 | if (key == KEY_my) |
4703 | TOKEN(MYSUB); | |
4704 | TOKEN(SUB); | |
4633a7c4 | 4705 | } |
79072805 LW |
4706 | |
4707 | case KEY_system: | |
4708 | set_csh(); | |
a0d0e21e | 4709 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4710 | |
4711 | case KEY_symlink: | |
a0d0e21e | 4712 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4713 | |
4714 | case KEY_syscall: | |
a0d0e21e | 4715 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4716 | |
c07a80fd | 4717 | case KEY_sysopen: |
4718 | LOP(OP_SYSOPEN,XTERM); | |
4719 | ||
137443ea | 4720 | case KEY_sysseek: |
4721 | LOP(OP_SYSSEEK,XTERM); | |
4722 | ||
79072805 | 4723 | case KEY_sysread: |
a0d0e21e | 4724 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4725 | |
4726 | case KEY_syswrite: | |
a0d0e21e | 4727 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4728 | |
4729 | case KEY_tr: | |
4730 | s = scan_trans(s); | |
4731 | TERM(sublex_start()); | |
4732 | ||
4733 | case KEY_tell: | |
4734 | UNI(OP_TELL); | |
4735 | ||
4736 | case KEY_telldir: | |
4737 | UNI(OP_TELLDIR); | |
4738 | ||
463ee0b2 | 4739 | case KEY_tie: |
a0d0e21e | 4740 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4741 | |
c07a80fd | 4742 | case KEY_tied: |
4743 | UNI(OP_TIED); | |
4744 | ||
79072805 LW |
4745 | case KEY_time: |
4746 | FUN0(OP_TIME); | |
4747 | ||
4748 | case KEY_times: | |
4749 | FUN0(OP_TMS); | |
4750 | ||
4751 | case KEY_truncate: | |
a0d0e21e | 4752 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4753 | |
4754 | case KEY_uc: | |
4755 | UNI(OP_UC); | |
4756 | ||
4757 | case KEY_ucfirst: | |
4758 | UNI(OP_UCFIRST); | |
4759 | ||
463ee0b2 LW |
4760 | case KEY_untie: |
4761 | UNI(OP_UNTIE); | |
4762 | ||
79072805 | 4763 | case KEY_until: |
57843af0 | 4764 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4765 | OPERATOR(UNTIL); |
4766 | ||
4767 | case KEY_unless: | |
57843af0 | 4768 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4769 | OPERATOR(UNLESS); |
4770 | ||
4771 | case KEY_unlink: | |
a0d0e21e | 4772 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4773 | |
4774 | case KEY_undef: | |
4775 | UNI(OP_UNDEF); | |
4776 | ||
4777 | case KEY_unpack: | |
a0d0e21e | 4778 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4779 | |
4780 | case KEY_utime: | |
a0d0e21e | 4781 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4782 | |
4783 | case KEY_umask: | |
599cee73 | 4784 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4785 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 JH |
4786 | if (*d != '0' && isDIGIT(*d)) |
4787 | Perl_warner(aTHX_ WARN_OCTAL, | |
4788 | "umask: argument is missing initial 0"); | |
748a9306 | 4789 | } |
79072805 LW |
4790 | UNI(OP_UMASK); |
4791 | ||
4792 | case KEY_unshift: | |
a0d0e21e LW |
4793 | LOP(OP_UNSHIFT,XTERM); |
4794 | ||
4795 | case KEY_use: | |
3280af22 | 4796 | if (PL_expect != XSTATE) |
a0d0e21e | 4797 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4798 | s = skipspace(s); |
a7cb1f99 | 4799 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4800 | s = force_version(s); |
a7cb1f99 | 4801 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4802 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4803 | force_next(WORD); |
4804 | } | |
4805 | } | |
4806 | else { | |
4807 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4808 | s = force_version(s); | |
4809 | } | |
a0d0e21e LW |
4810 | yylval.ival = 1; |
4811 | OPERATOR(USE); | |
79072805 LW |
4812 | |
4813 | case KEY_values: | |
4814 | UNI(OP_VALUES); | |
4815 | ||
4816 | case KEY_vec: | |
a0d0e21e | 4817 | LOP(OP_VEC,XTERM); |
79072805 LW |
4818 | |
4819 | case KEY_while: | |
57843af0 | 4820 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4821 | OPERATOR(WHILE); |
4822 | ||
4823 | case KEY_warn: | |
3280af22 | 4824 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4825 | LOP(OP_WARN,XTERM); |
79072805 LW |
4826 | |
4827 | case KEY_wait: | |
4828 | FUN0(OP_WAIT); | |
4829 | ||
4830 | case KEY_waitpid: | |
a0d0e21e | 4831 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4832 | |
4833 | case KEY_wantarray: | |
4834 | FUN0(OP_WANTARRAY); | |
4835 | ||
4836 | case KEY_write: | |
9d116dd7 JH |
4837 | #ifdef EBCDIC |
4838 | { | |
4839 | static char ctl_l[2]; | |
4840 | ||
4841 | if (ctl_l[0] == '\0') | |
4842 | ctl_l[0] = toCTRL('L'); | |
4843 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4844 | } | |
4845 | #else | |
4846 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4847 | #endif | |
79072805 LW |
4848 | UNI(OP_ENTERWRITE); |
4849 | ||
4850 | case KEY_x: | |
3280af22 | 4851 | if (PL_expect == XOPERATOR) |
79072805 LW |
4852 | Mop(OP_REPEAT); |
4853 | check_uni(); | |
4854 | goto just_a_word; | |
4855 | ||
a0d0e21e LW |
4856 | case KEY_xor: |
4857 | yylval.ival = OP_XOR; | |
4858 | OPERATOR(OROP); | |
4859 | ||
79072805 LW |
4860 | case KEY_y: |
4861 | s = scan_trans(s); | |
4862 | TERM(sublex_start()); | |
4863 | } | |
49dc05e3 | 4864 | }} |
79072805 LW |
4865 | } |
4866 | ||
4867 | I32 | |
864dbfa3 | 4868 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4869 | { |
4870 | switch (*d) { | |
4871 | case '_': | |
4872 | if (d[1] == '_') { | |
a0d0e21e | 4873 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4874 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4875 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4876 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4877 | if (strEQ(d,"__END__")) return KEY___END__; |
4878 | } | |
4879 | break; | |
8990e307 LW |
4880 | case 'A': |
4881 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4882 | break; | |
79072805 | 4883 | case 'a': |
463ee0b2 LW |
4884 | switch (len) { |
4885 | case 3: | |
a0d0e21e LW |
4886 | if (strEQ(d,"and")) return -KEY_and; |
4887 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4888 | break; |
463ee0b2 | 4889 | case 5: |
a0d0e21e LW |
4890 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4891 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4892 | break; |
4893 | case 6: | |
a0d0e21e | 4894 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4895 | break; |
4896 | } | |
79072805 LW |
4897 | break; |
4898 | case 'B': | |
4899 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4900 | break; |
79072805 | 4901 | case 'b': |
a0d0e21e LW |
4902 | if (strEQ(d,"bless")) return -KEY_bless; |
4903 | if (strEQ(d,"bind")) return -KEY_bind; | |
4904 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4905 | break; | |
4906 | case 'C': | |
4907 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4908 | break; |
4909 | case 'c': | |
4910 | switch (len) { | |
4911 | case 3: | |
a0d0e21e LW |
4912 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4913 | if (strEQ(d,"chr")) return -KEY_chr; | |
4914 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4915 | break; |
4916 | case 4: | |
4917 | if (strEQ(d,"chop")) return KEY_chop; | |
4918 | break; | |
4919 | case 5: | |
a0d0e21e LW |
4920 | if (strEQ(d,"close")) return -KEY_close; |
4921 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4922 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4923 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4924 | if (strEQ(d,"chown")) return -KEY_chown; | |
4925 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4926 | break; |
4927 | case 6: | |
a0d0e21e LW |
4928 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4929 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4930 | break; |
4931 | case 7: | |
a0d0e21e | 4932 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4933 | break; |
4934 | case 8: | |
a0d0e21e LW |
4935 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4936 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4937 | break; |
4938 | } | |
4939 | break; | |
ed6116ce LW |
4940 | case 'D': |
4941 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4942 | break; | |
79072805 LW |
4943 | case 'd': |
4944 | switch (len) { | |
4945 | case 2: | |
4946 | if (strEQ(d,"do")) return KEY_do; | |
4947 | break; | |
4948 | case 3: | |
a0d0e21e | 4949 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4950 | break; |
4951 | case 4: | |
a0d0e21e | 4952 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4953 | break; |
4954 | case 6: | |
4955 | if (strEQ(d,"delete")) return KEY_delete; | |
4956 | break; | |
4957 | case 7: | |
4958 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4959 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4960 | break; |
4961 | case 8: | |
a0d0e21e | 4962 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4963 | break; |
4964 | } | |
4965 | break; | |
4966 | case 'E': | |
a0d0e21e | 4967 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4968 | if (strEQ(d,"END")) return KEY_END; |
4969 | break; | |
4970 | case 'e': | |
4971 | switch (len) { | |
4972 | case 2: | |
a0d0e21e | 4973 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4974 | break; |
4975 | case 3: | |
a0d0e21e LW |
4976 | if (strEQ(d,"eof")) return -KEY_eof; |
4977 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4978 | break; |
4979 | case 4: | |
4980 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4981 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4982 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4983 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4984 | if (strEQ(d,"each")) return KEY_each; |
4985 | break; | |
4986 | case 5: | |
4987 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4988 | break; | |
a0d0e21e LW |
4989 | case 6: |
4990 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 4991 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 4992 | break; |
79072805 | 4993 | case 8: |
a0d0e21e LW |
4994 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4995 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4996 | break; |
4997 | case 9: | |
a0d0e21e | 4998 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4999 | break; |
5000 | case 10: | |
a0d0e21e LW |
5001 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5002 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5003 | break; |
5004 | case 11: | |
a0d0e21e | 5005 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5006 | break; |
a687059c | 5007 | } |
a687059c | 5008 | break; |
79072805 LW |
5009 | case 'f': |
5010 | switch (len) { | |
5011 | case 3: | |
5012 | if (strEQ(d,"for")) return KEY_for; | |
5013 | break; | |
5014 | case 4: | |
a0d0e21e | 5015 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5016 | break; |
5017 | case 5: | |
a0d0e21e LW |
5018 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5019 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5020 | break; |
5021 | case 6: | |
5022 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5023 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5024 | break; |
5025 | case 7: | |
5026 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5027 | break; | |
5028 | case 8: | |
a0d0e21e | 5029 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5030 | break; |
378cc40b | 5031 | } |
a687059c | 5032 | break; |
79072805 LW |
5033 | case 'G': |
5034 | if (len == 2) { | |
a0d0e21e LW |
5035 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5036 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5037 | } |
a687059c | 5038 | break; |
79072805 | 5039 | case 'g': |
a687059c LW |
5040 | if (strnEQ(d,"get",3)) { |
5041 | d += 3; | |
5042 | if (*d == 'p') { | |
79072805 LW |
5043 | switch (len) { |
5044 | case 7: | |
a0d0e21e LW |
5045 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5046 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5047 | break; |
5048 | case 8: | |
a0d0e21e LW |
5049 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5050 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5051 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5052 | break; |
5053 | case 11: | |
a0d0e21e LW |
5054 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5055 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5056 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5057 | break; |
5058 | case 14: | |
a0d0e21e | 5059 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5060 | break; |
5061 | case 16: | |
a0d0e21e | 5062 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5063 | break; |
5064 | } | |
a687059c LW |
5065 | } |
5066 | else if (*d == 'h') { | |
a0d0e21e LW |
5067 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5068 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5069 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5070 | } |
5071 | else if (*d == 'n') { | |
a0d0e21e LW |
5072 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5073 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5074 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5075 | } |
5076 | else if (*d == 's') { | |
a0d0e21e LW |
5077 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5078 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5079 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5080 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5081 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5082 | } |
5083 | else if (*d == 'g') { | |
a0d0e21e LW |
5084 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5085 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5086 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5087 | } |
5088 | else if (*d == 'l') { | |
a0d0e21e | 5089 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5090 | } |
a0d0e21e | 5091 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5092 | break; |
a687059c | 5093 | } |
79072805 LW |
5094 | switch (len) { |
5095 | case 2: | |
a0d0e21e LW |
5096 | if (strEQ(d,"gt")) return -KEY_gt; |
5097 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5098 | break; |
5099 | case 4: | |
5100 | if (strEQ(d,"grep")) return KEY_grep; | |
5101 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5102 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5103 | break; |
5104 | case 6: | |
a0d0e21e | 5105 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5106 | break; |
378cc40b | 5107 | } |
a687059c | 5108 | break; |
79072805 | 5109 | case 'h': |
a0d0e21e | 5110 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5111 | break; |
7d07dbc2 MB |
5112 | case 'I': |
5113 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5114 | break; | |
79072805 LW |
5115 | case 'i': |
5116 | switch (len) { | |
5117 | case 2: | |
5118 | if (strEQ(d,"if")) return KEY_if; | |
5119 | break; | |
5120 | case 3: | |
a0d0e21e | 5121 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5122 | break; |
5123 | case 5: | |
a0d0e21e LW |
5124 | if (strEQ(d,"index")) return -KEY_index; |
5125 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5126 | break; |
5127 | } | |
a687059c | 5128 | break; |
79072805 | 5129 | case 'j': |
a0d0e21e | 5130 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5131 | break; |
79072805 LW |
5132 | case 'k': |
5133 | if (len == 4) { | |
5134 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5135 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5136 | } |
79072805 LW |
5137 | break; |
5138 | case 'L': | |
5139 | if (len == 2) { | |
a0d0e21e LW |
5140 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5141 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5142 | } |
79072805 LW |
5143 | break; |
5144 | case 'l': | |
5145 | switch (len) { | |
5146 | case 2: | |
a0d0e21e LW |
5147 | if (strEQ(d,"lt")) return -KEY_lt; |
5148 | if (strEQ(d,"le")) return -KEY_le; | |
5149 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5150 | break; |
5151 | case 3: | |
a0d0e21e | 5152 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5153 | break; |
5154 | case 4: | |
5155 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5156 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5157 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5158 | break; |
79072805 LW |
5159 | case 5: |
5160 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5161 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5162 | break; |
5163 | case 6: | |
a0d0e21e LW |
5164 | if (strEQ(d,"length")) return -KEY_length; |
5165 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5166 | break; |
5167 | case 7: | |
a0d0e21e | 5168 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5169 | break; |
5170 | case 9: | |
a0d0e21e | 5171 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5172 | break; |
5173 | } | |
a687059c | 5174 | break; |
79072805 LW |
5175 | case 'm': |
5176 | switch (len) { | |
5177 | case 1: return KEY_m; | |
93a17b20 LW |
5178 | case 2: |
5179 | if (strEQ(d,"my")) return KEY_my; | |
5180 | break; | |
a0d0e21e LW |
5181 | case 3: |
5182 | if (strEQ(d,"map")) return KEY_map; | |
5183 | break; | |
79072805 | 5184 | case 5: |
a0d0e21e | 5185 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5186 | break; |
5187 | case 6: | |
a0d0e21e LW |
5188 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5189 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5190 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5191 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5192 | break; |
5193 | } | |
a687059c | 5194 | break; |
79072805 | 5195 | case 'N': |
a0d0e21e | 5196 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5197 | break; |
79072805 LW |
5198 | case 'n': |
5199 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5200 | if (strEQ(d,"ne")) return -KEY_ne; |
5201 | if (strEQ(d,"not")) return -KEY_not; | |
5202 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5203 | break; |
79072805 LW |
5204 | case 'o': |
5205 | switch (len) { | |
463ee0b2 | 5206 | case 2: |
a0d0e21e | 5207 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5208 | break; |
79072805 | 5209 | case 3: |
a0d0e21e LW |
5210 | if (strEQ(d,"ord")) return -KEY_ord; |
5211 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5212 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5213 | break; |
5214 | case 4: | |
a0d0e21e | 5215 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5216 | break; |
5217 | case 7: | |
a0d0e21e | 5218 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5219 | break; |
fe14fcc3 | 5220 | } |
a687059c | 5221 | break; |
79072805 LW |
5222 | case 'p': |
5223 | switch (len) { | |
5224 | case 3: | |
5225 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5226 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5227 | break; |
5228 | case 4: | |
5229 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5230 | if (strEQ(d,"pack")) return -KEY_pack; |
5231 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5232 | break; |
5233 | case 5: | |
5234 | if (strEQ(d,"print")) return KEY_print; | |
5235 | break; | |
5236 | case 6: | |
5237 | if (strEQ(d,"printf")) return KEY_printf; | |
5238 | break; | |
5239 | case 7: | |
5240 | if (strEQ(d,"package")) return KEY_package; | |
5241 | break; | |
c07a80fd | 5242 | case 9: |
5243 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5244 | } |
79072805 LW |
5245 | break; |
5246 | case 'q': | |
5247 | if (len <= 2) { | |
5248 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5249 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5250 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5251 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5252 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5253 | } |
a0d0e21e | 5254 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5255 | break; |
5256 | case 'r': | |
5257 | switch (len) { | |
5258 | case 3: | |
a0d0e21e | 5259 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5260 | break; |
5261 | case 4: | |
a0d0e21e LW |
5262 | if (strEQ(d,"read")) return -KEY_read; |
5263 | if (strEQ(d,"rand")) return -KEY_rand; | |
5264 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5265 | if (strEQ(d,"redo")) return KEY_redo; |
5266 | break; | |
5267 | case 5: | |
a0d0e21e LW |
5268 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5269 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5270 | break; |
5271 | case 6: | |
5272 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5273 | if (strEQ(d,"rename")) return -KEY_rename; |
5274 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5275 | break; |
5276 | case 7: | |
a0d0e21e LW |
5277 | if (strEQ(d,"require")) return -KEY_require; |
5278 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5279 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5280 | break; |
5281 | case 8: | |
a0d0e21e LW |
5282 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5283 | if (strEQ(d,"readline")) return -KEY_readline; | |
5284 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5285 | break; |
5286 | case 9: | |
a0d0e21e | 5287 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5288 | break; |
a687059c | 5289 | } |
79072805 | 5290 | break; |
4f25aa18 GS |
5291 | case 'S': |
5292 | if (strEQ(d,"STOP")) return KEY_STOP; | |
5293 | break; | |
79072805 | 5294 | case 's': |
a687059c | 5295 | switch (d[1]) { |
79072805 | 5296 | case 0: return KEY_s; |
a687059c | 5297 | case 'c': |
79072805 | 5298 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5299 | break; |
5300 | case 'e': | |
79072805 LW |
5301 | switch (len) { |
5302 | case 4: | |
a0d0e21e LW |
5303 | if (strEQ(d,"seek")) return -KEY_seek; |
5304 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5305 | break; |
5306 | case 5: | |
a0d0e21e | 5307 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5308 | break; |
5309 | case 6: | |
a0d0e21e LW |
5310 | if (strEQ(d,"select")) return -KEY_select; |
5311 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5312 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5313 | break; |
5314 | case 7: | |
a0d0e21e LW |
5315 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5316 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5317 | break; |
5318 | case 8: | |
a0d0e21e LW |
5319 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5320 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5321 | break; |
5322 | case 9: | |
a0d0e21e | 5323 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5324 | break; |
5325 | case 10: | |
a0d0e21e LW |
5326 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5327 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5328 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5329 | break; |
5330 | case 11: | |
a0d0e21e LW |
5331 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5332 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5333 | break; |
5334 | } | |
a687059c LW |
5335 | break; |
5336 | case 'h': | |
79072805 LW |
5337 | switch (len) { |
5338 | case 5: | |
5339 | if (strEQ(d,"shift")) return KEY_shift; | |
5340 | break; | |
5341 | case 6: | |
a0d0e21e LW |
5342 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5343 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5344 | break; |
5345 | case 7: | |
a0d0e21e | 5346 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5347 | break; |
5348 | case 8: | |
a0d0e21e LW |
5349 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5350 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5351 | break; |
5352 | } | |
a687059c LW |
5353 | break; |
5354 | case 'i': | |
a0d0e21e | 5355 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5356 | break; |
5357 | case 'l': | |
a0d0e21e | 5358 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5359 | break; |
5360 | case 'o': | |
79072805 | 5361 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5362 | if (strEQ(d,"socket")) return -KEY_socket; |
5363 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5364 | break; |
5365 | case 'p': | |
79072805 | 5366 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5367 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5368 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5369 | break; |
5370 | case 'q': | |
a0d0e21e | 5371 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5372 | break; |
5373 | case 'r': | |
a0d0e21e | 5374 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5375 | break; |
5376 | case 't': | |
a0d0e21e | 5377 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5378 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5379 | break; |
5380 | case 'u': | |
a0d0e21e | 5381 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5382 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5383 | break; |
5384 | case 'y': | |
79072805 LW |
5385 | switch (len) { |
5386 | case 6: | |
a0d0e21e | 5387 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5388 | break; |
5389 | case 7: | |
a0d0e21e LW |
5390 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5391 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5392 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5393 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5394 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5395 | break; |
5396 | case 8: | |
a0d0e21e | 5397 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5398 | break; |
a687059c | 5399 | } |
a687059c LW |
5400 | break; |
5401 | } | |
5402 | break; | |
79072805 LW |
5403 | case 't': |
5404 | switch (len) { | |
5405 | case 2: | |
5406 | if (strEQ(d,"tr")) return KEY_tr; | |
5407 | break; | |
463ee0b2 LW |
5408 | case 3: |
5409 | if (strEQ(d,"tie")) return KEY_tie; | |
5410 | break; | |
79072805 | 5411 | case 4: |
a0d0e21e | 5412 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5413 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5414 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5415 | break; |
5416 | case 5: | |
a0d0e21e | 5417 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5418 | break; |
5419 | case 7: | |
a0d0e21e | 5420 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5421 | break; |
5422 | case 8: | |
a0d0e21e | 5423 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5424 | break; |
378cc40b | 5425 | } |
a687059c | 5426 | break; |
79072805 LW |
5427 | case 'u': |
5428 | switch (len) { | |
5429 | case 2: | |
a0d0e21e LW |
5430 | if (strEQ(d,"uc")) return -KEY_uc; |
5431 | break; | |
5432 | case 3: | |
5433 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5434 | break; |
5435 | case 5: | |
5436 | if (strEQ(d,"undef")) return KEY_undef; | |
5437 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5438 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5439 | if (strEQ(d,"utime")) return -KEY_utime; |
5440 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5441 | break; |
5442 | case 6: | |
5443 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5444 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5445 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5446 | break; |
5447 | case 7: | |
5448 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5449 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5450 | break; |
a687059c LW |
5451 | } |
5452 | break; | |
79072805 | 5453 | case 'v': |
a0d0e21e LW |
5454 | if (strEQ(d,"values")) return -KEY_values; |
5455 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5456 | break; |
79072805 LW |
5457 | case 'w': |
5458 | switch (len) { | |
5459 | case 4: | |
a0d0e21e LW |
5460 | if (strEQ(d,"warn")) return -KEY_warn; |
5461 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5462 | break; |
5463 | case 5: | |
5464 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5465 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5466 | break; |
5467 | case 7: | |
a0d0e21e | 5468 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5469 | break; |
5470 | case 9: | |
a0d0e21e | 5471 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5472 | break; |
2f3197b3 | 5473 | } |
a687059c | 5474 | break; |
79072805 | 5475 | case 'x': |
a0d0e21e LW |
5476 | if (len == 1) return -KEY_x; |
5477 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5478 | break; |
79072805 LW |
5479 | case 'y': |
5480 | if (len == 1) return KEY_y; | |
5481 | break; | |
5482 | case 'z': | |
a687059c LW |
5483 | break; |
5484 | } | |
79072805 | 5485 | return 0; |
a687059c LW |
5486 | } |
5487 | ||
76e3520e | 5488 | STATIC void |
cea2e8a9 | 5489 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5490 | { |
2f3197b3 LW |
5491 | char *w; |
5492 | ||
d008e5eb GS |
5493 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5494 | dTHR; /* only for ckWARN */ | |
5495 | if (ckWARN(WARN_SYNTAX)) { | |
5496 | int level = 1; | |
5497 | for (w = s+2; *w && level; w++) { | |
5498 | if (*w == '(') | |
5499 | ++level; | |
5500 | else if (*w == ')') | |
5501 | --level; | |
5502 | } | |
5503 | if (*w) | |
5504 | for (; *w && isSPACE(*w); w++) ; | |
5505 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5506 | Perl_warner(aTHX_ WARN_SYNTAX, |
5507 | "%s (...) interpreted as function",name); | |
d008e5eb | 5508 | } |
2f3197b3 | 5509 | } |
3280af22 | 5510 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5511 | s++; |
a687059c LW |
5512 | if (*s == '(') |
5513 | s++; | |
3280af22 | 5514 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5515 | s++; |
834a4ddd | 5516 | if (isIDFIRST_lazy(s)) { |
2f3197b3 | 5517 | w = s++; |
834a4ddd | 5518 | while (isALNUM_lazy(s)) |
a687059c | 5519 | s++; |
3280af22 | 5520 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5521 | s++; |
e929a76b | 5522 | if (*s == ',') { |
463ee0b2 | 5523 | int kw; |
e929a76b | 5524 | *s = '\0'; |
864dbfa3 | 5525 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5526 | *s = ','; |
463ee0b2 | 5527 | if (kw) |
e929a76b | 5528 | return; |
cea2e8a9 | 5529 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5530 | } |
5531 | } | |
5532 | } | |
5533 | ||
423cee85 JH |
5534 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5535 | Best used as sv=new_constant(..., sv, ...). | |
5536 | If s, pv are NULL, calls subroutine with one argument, | |
5537 | and type is used with error messages only. */ | |
5538 | ||
b3ac6de7 | 5539 | STATIC SV * |
dff6d3cd GS |
5540 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
5541 | const char *type) | |
b3ac6de7 | 5542 | { |
b3ac6de7 | 5543 | dSP; |
3280af22 | 5544 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5545 | SV *res; |
b3ac6de7 IZ |
5546 | SV **cvp; |
5547 | SV *cv, *typesv; | |
dff6d3cd | 5548 | const char *why, *why1, *why2; |
423cee85 JH |
5549 | |
5550 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5551 | SV *msg; | |
5552 | ||
5553 | why = "%^H is not localized"; | |
5554 | report_short: | |
5555 | why1 = why2 = ""; | |
5556 | report: | |
5557 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5558 | (type ? type: "undef"), why1, why2, why); | |
5559 | yyerror(SvPVX(msg)); | |
5560 | SvREFCNT_dec(msg); | |
5561 | return sv; | |
5562 | } | |
b3ac6de7 | 5563 | if (!table) { |
423cee85 JH |
5564 | why = "%^H is not defined"; |
5565 | goto report_short; | |
b3ac6de7 IZ |
5566 | } |
5567 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5568 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5569 | why = "} is not defined"; |
5570 | why1 = "$^H{"; | |
5571 | why2 = key; | |
5572 | goto report; | |
b3ac6de7 IZ |
5573 | } |
5574 | sv_2mortal(sv); /* Parent created it permanently */ | |
5575 | cv = *cvp; | |
423cee85 JH |
5576 | if (!pv && s) |
5577 | pv = sv_2mortal(newSVpvn(s, len)); | |
5578 | if (type && pv) | |
5579 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5580 | else |
423cee85 JH |
5581 | typesv = &PL_sv_undef; |
5582 | ||
e788e7d3 | 5583 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5584 | ENTER ; |
5585 | SAVETMPS; | |
5586 | ||
5587 | PUSHMARK(SP) ; | |
25eaa213 | 5588 | EXTEND(sp, 4); |
423cee85 JH |
5589 | if (pv) |
5590 | PUSHs(pv); | |
b3ac6de7 | 5591 | PUSHs(sv); |
423cee85 JH |
5592 | if (pv) |
5593 | PUSHs(typesv); | |
b3ac6de7 IZ |
5594 | PUSHs(cv); |
5595 | PUTBACK; | |
423cee85 JH |
5596 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5597 | ||
5598 | SPAGAIN ; | |
5599 | ||
5600 | /* Check the eval first */ | |
5601 | if (!PL_in_eval && SvTRUE(ERRSV)) | |
5602 | { | |
5603 | STRLEN n_a; | |
5604 | sv_catpv(ERRSV, "Propagated"); | |
5605 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5606 | (void)POPs; |
423cee85 JH |
5607 | res = SvREFCNT_inc(sv); |
5608 | } | |
5609 | else { | |
5610 | res = POPs; | |
e1f15930 | 5611 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5612 | } |
5613 | ||
5614 | PUTBACK ; | |
5615 | FREETMPS ; | |
5616 | LEAVE ; | |
b3ac6de7 | 5617 | POPSTACK; |
423cee85 | 5618 | |
b3ac6de7 | 5619 | if (!SvOK(res)) { |
423cee85 JH |
5620 | why = "}} did not return a defined value"; |
5621 | why1 = "Call to &{$^H{"; | |
5622 | why2 = key; | |
5623 | sv = res; | |
5624 | goto report; | |
5625 | } | |
5626 | ||
5627 | return res; | |
b3ac6de7 | 5628 | } |
423cee85 | 5629 | |
76e3520e | 5630 | STATIC char * |
cea2e8a9 | 5631 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5632 | { |
5633 | register char *d = dest; | |
8903cb82 | 5634 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5635 | for (;;) { |
8903cb82 | 5636 | if (d >= e) |
cea2e8a9 | 5637 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5638 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5639 | *d++ = *s++; |
834a4ddd | 5640 | else if (*s == '\'' && allow_package && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5641 | *d++ = ':'; |
5642 | *d++ = ':'; | |
5643 | s++; | |
5644 | } | |
c3e0f903 | 5645 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5646 | *d++ = *s++; |
5647 | *d++ = *s++; | |
5648 | } | |
834a4ddd | 5649 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5650 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5651 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5652 | t += UTF8SKIP(t); |
5653 | if (d + (t - s) > e) | |
cea2e8a9 | 5654 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5655 | Copy(s, d, t - s, char); |
5656 | d += t - s; | |
5657 | s = t; | |
5658 | } | |
463ee0b2 LW |
5659 | else { |
5660 | *d = '\0'; | |
5661 | *slp = d - dest; | |
5662 | return s; | |
e929a76b | 5663 | } |
378cc40b LW |
5664 | } |
5665 | } | |
5666 | ||
76e3520e | 5667 | STATIC char * |
cea2e8a9 | 5668 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5669 | { |
5670 | register char *d; | |
8903cb82 | 5671 | register char *e; |
79072805 | 5672 | char *bracket = 0; |
748a9306 | 5673 | char funny = *s++; |
378cc40b | 5674 | |
a0d0e21e LW |
5675 | if (isSPACE(*s)) |
5676 | s = skipspace(s); | |
378cc40b | 5677 | d = dest; |
8903cb82 | 5678 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5679 | if (isDIGIT(*s)) { |
8903cb82 | 5680 | while (isDIGIT(*s)) { |
5681 | if (d >= e) | |
cea2e8a9 | 5682 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5683 | *d++ = *s++; |
8903cb82 | 5684 | } |
378cc40b LW |
5685 | } |
5686 | else { | |
463ee0b2 | 5687 | for (;;) { |
8903cb82 | 5688 | if (d >= e) |
cea2e8a9 | 5689 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5690 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5691 | *d++ = *s++; |
834a4ddd | 5692 | else if (*s == '\'' && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5693 | *d++ = ':'; |
5694 | *d++ = ':'; | |
5695 | s++; | |
5696 | } | |
a0d0e21e | 5697 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5698 | *d++ = *s++; |
5699 | *d++ = *s++; | |
5700 | } | |
834a4ddd | 5701 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5702 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5703 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5704 | t += UTF8SKIP(t); |
5705 | if (d + (t - s) > e) | |
cea2e8a9 | 5706 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5707 | Copy(s, d, t - s, char); |
5708 | d += t - s; | |
5709 | s = t; | |
5710 | } | |
463ee0b2 LW |
5711 | else |
5712 | break; | |
5713 | } | |
378cc40b LW |
5714 | } |
5715 | *d = '\0'; | |
5716 | d = dest; | |
79072805 | 5717 | if (*d) { |
3280af22 NIS |
5718 | if (PL_lex_state != LEX_NORMAL) |
5719 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5720 | return s; |
378cc40b | 5721 | } |
748a9306 | 5722 | if (*s == '$' && s[1] && |
834a4ddd | 5723 | (isALNUM_lazy(s+1) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5724 | { |
4810e5ec | 5725 | return s; |
5cd24f17 | 5726 | } |
79072805 LW |
5727 | if (*s == '{') { |
5728 | bracket = s; | |
5729 | s++; | |
5730 | } | |
5731 | else if (ck_uni) | |
5732 | check_uni(); | |
93a17b20 | 5733 | if (s < send) |
79072805 LW |
5734 | *d = *s++; |
5735 | d[1] = '\0'; | |
2b92dfce | 5736 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5737 | *d = toCTRL(*s); |
5738 | s++; | |
de3bb511 | 5739 | } |
79072805 | 5740 | if (bracket) { |
748a9306 | 5741 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5742 | while (s < send) { |
5743 | char ch = *s++; | |
5744 | if (ch != ' ' && ch != '\t') { | |
5745 | *d = ch; | |
5746 | break; | |
5747 | } | |
5748 | } | |
748a9306 | 5749 | } |
834a4ddd | 5750 | if (isIDFIRST_lazy(d)) { |
79072805 | 5751 | d++; |
a0ed51b3 LW |
5752 | if (UTF) { |
5753 | e = s; | |
834a4ddd | 5754 | while (e < send && isALNUM_lazy(e) || *e == ':') { |
a0ed51b3 | 5755 | e += UTF8SKIP(e); |
dfe13c55 | 5756 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5757 | e += UTF8SKIP(e); |
5758 | } | |
5759 | Copy(s, d, e - s, char); | |
5760 | d += e - s; | |
5761 | s = e; | |
5762 | } | |
5763 | else { | |
2b92dfce | 5764 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5765 | *d++ = *s++; |
2b92dfce | 5766 | if (d >= e) |
cea2e8a9 | 5767 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5768 | } |
79072805 | 5769 | *d = '\0'; |
748a9306 | 5770 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5771 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5772 | dTHR; /* only for ckWARN */ |
599cee73 | 5773 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5774 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5775 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5776 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5777 | funny, dest, brack, funny, dest, brack); |
5778 | } | |
79072805 | 5779 | bracket++; |
a0be28da | 5780 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5781 | return s; |
5782 | } | |
2b92dfce GS |
5783 | } |
5784 | /* Handle extended ${^Foo} variables | |
5785 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5786 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5787 | && isALNUM(*s)) | |
5788 | { | |
5789 | d++; | |
5790 | while (isALNUM(*s) && d < e) { | |
5791 | *d++ = *s++; | |
5792 | } | |
5793 | if (d >= e) | |
cea2e8a9 | 5794 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5795 | *d = '\0'; |
79072805 LW |
5796 | } |
5797 | if (*s == '}') { | |
5798 | s++; | |
3280af22 NIS |
5799 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5800 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5801 | if (funny == '#') |
5802 | funny = '@'; | |
d008e5eb GS |
5803 | if (PL_lex_state == LEX_NORMAL) { |
5804 | dTHR; /* only for ckWARN */ | |
5805 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5806 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5807 | { |
cea2e8a9 | 5808 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5809 | "Ambiguous use of %c{%s} resolved to %c%s", |
5810 | funny, dest, funny, dest); | |
5811 | } | |
5812 | } | |
79072805 LW |
5813 | } |
5814 | else { | |
5815 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5816 | *dest = '\0'; |
79072805 LW |
5817 | } |
5818 | } | |
3280af22 NIS |
5819 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5820 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5821 | return s; |
5822 | } | |
5823 | ||
cea2e8a9 GS |
5824 | void |
5825 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5826 | { |
bbce6d69 | 5827 | if (ch == 'i') |
a0d0e21e | 5828 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5829 | else if (ch == 'g') |
5830 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5831 | else if (ch == 'c') |
5832 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5833 | else if (ch == 'o') |
5834 | *pmfl |= PMf_KEEP; | |
5835 | else if (ch == 'm') | |
5836 | *pmfl |= PMf_MULTILINE; | |
5837 | else if (ch == 's') | |
5838 | *pmfl |= PMf_SINGLELINE; | |
5839 | else if (ch == 'x') | |
5840 | *pmfl |= PMf_EXTENDED; | |
5841 | } | |
378cc40b | 5842 | |
76e3520e | 5843 | STATIC char * |
cea2e8a9 | 5844 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5845 | { |
79072805 LW |
5846 | PMOP *pm; |
5847 | char *s; | |
378cc40b | 5848 | |
09bef843 | 5849 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5850 | if (!s) { |
3280af22 NIS |
5851 | if (PL_lex_stuff) |
5852 | SvREFCNT_dec(PL_lex_stuff); | |
5853 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5854 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5855 | } |
bbce6d69 | 5856 | |
8782bef2 | 5857 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5858 | if (PL_multi_open == '?') |
79072805 | 5859 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5860 | if(type == OP_QR) { |
5861 | while (*s && strchr("iomsx", *s)) | |
5862 | pmflag(&pm->op_pmflags,*s++); | |
5863 | } | |
5864 | else { | |
5865 | while (*s && strchr("iogcmsx", *s)) | |
5866 | pmflag(&pm->op_pmflags,*s++); | |
5867 | } | |
4633a7c4 | 5868 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5869 | |
3280af22 | 5870 | PL_lex_op = (OP*)pm; |
79072805 | 5871 | yylval.ival = OP_MATCH; |
378cc40b LW |
5872 | return s; |
5873 | } | |
5874 | ||
76e3520e | 5875 | STATIC char * |
cea2e8a9 | 5876 | S_scan_subst(pTHX_ char *start) |
79072805 | 5877 | { |
a0d0e21e | 5878 | register char *s; |
79072805 | 5879 | register PMOP *pm; |
4fdae800 | 5880 | I32 first_start; |
79072805 LW |
5881 | I32 es = 0; |
5882 | ||
79072805 LW |
5883 | yylval.ival = OP_NULL; |
5884 | ||
09bef843 | 5885 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5886 | |
5887 | if (!s) { | |
3280af22 NIS |
5888 | if (PL_lex_stuff) |
5889 | SvREFCNT_dec(PL_lex_stuff); | |
5890 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5891 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5892 | } |
79072805 | 5893 | |
3280af22 | 5894 | if (s[-1] == PL_multi_open) |
79072805 LW |
5895 | s--; |
5896 | ||
3280af22 | 5897 | first_start = PL_multi_start; |
09bef843 | 5898 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5899 | if (!s) { |
3280af22 NIS |
5900 | if (PL_lex_stuff) |
5901 | SvREFCNT_dec(PL_lex_stuff); | |
5902 | PL_lex_stuff = Nullsv; | |
5903 | if (PL_lex_repl) | |
5904 | SvREFCNT_dec(PL_lex_repl); | |
5905 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5906 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 5907 | } |
3280af22 | 5908 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5909 | |
79072805 | 5910 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5911 | while (*s) { |
a687059c LW |
5912 | if (*s == 'e') { |
5913 | s++; | |
2f3197b3 | 5914 | es++; |
a687059c | 5915 | } |
b3eb6a9b | 5916 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5917 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5918 | else |
5919 | break; | |
378cc40b | 5920 | } |
79072805 LW |
5921 | |
5922 | if (es) { | |
5923 | SV *repl; | |
0244c3a4 GS |
5924 | PL_sublex_info.super_bufptr = s; |
5925 | PL_sublex_info.super_bufend = PL_bufend; | |
5926 | PL_multi_end = 0; | |
79072805 | 5927 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 5928 | repl = newSVpvn("",0); |
463ee0b2 | 5929 | while (es-- > 0) |
a0d0e21e | 5930 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5931 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5932 | sv_catsv(repl, PL_lex_repl); |
79072805 | 5933 | sv_catpvn(repl, " };", 2); |
25da4f38 | 5934 | SvEVALED_on(repl); |
3280af22 NIS |
5935 | SvREFCNT_dec(PL_lex_repl); |
5936 | PL_lex_repl = repl; | |
378cc40b | 5937 | } |
79072805 | 5938 | |
4633a7c4 | 5939 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5940 | PL_lex_op = (OP*)pm; |
79072805 | 5941 | yylval.ival = OP_SUBST; |
378cc40b LW |
5942 | return s; |
5943 | } | |
5944 | ||
76e3520e | 5945 | STATIC char * |
cea2e8a9 | 5946 | S_scan_trans(pTHX_ char *start) |
378cc40b | 5947 | { |
a0d0e21e | 5948 | register char* s; |
11343788 | 5949 | OP *o; |
79072805 LW |
5950 | short *tbl; |
5951 | I32 squash; | |
a0ed51b3 | 5952 | I32 del; |
79072805 | 5953 | I32 complement; |
a0ed51b3 LW |
5954 | I32 utf8; |
5955 | I32 count = 0; | |
79072805 LW |
5956 | |
5957 | yylval.ival = OP_NULL; | |
5958 | ||
09bef843 | 5959 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5960 | if (!s) { |
3280af22 NIS |
5961 | if (PL_lex_stuff) |
5962 | SvREFCNT_dec(PL_lex_stuff); | |
5963 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5964 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 5965 | } |
3280af22 | 5966 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5967 | s--; |
5968 | ||
09bef843 | 5969 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5970 | if (!s) { |
3280af22 NIS |
5971 | if (PL_lex_stuff) |
5972 | SvREFCNT_dec(PL_lex_stuff); | |
5973 | PL_lex_stuff = Nullsv; | |
5974 | if (PL_lex_repl) | |
5975 | SvREFCNT_dec(PL_lex_repl); | |
5976 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5977 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 5978 | } |
79072805 | 5979 | |
a0ed51b3 LW |
5980 | if (UTF) { |
5981 | o = newSVOP(OP_TRANS, 0, 0); | |
5982 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
5983 | } | |
5984 | else { | |
5985 | New(803,tbl,256,short); | |
5986 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
5987 | utf8 = 0; | |
5988 | } | |
2f3197b3 | 5989 | |
a0ed51b3 LW |
5990 | complement = del = squash = 0; |
5991 | while (strchr("cdsCU", *s)) { | |
395c3793 | 5992 | if (*s == 'c') |
79072805 | 5993 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 5994 | else if (*s == 'd') |
a0ed51b3 LW |
5995 | del = OPpTRANS_DELETE; |
5996 | else if (*s == 's') | |
79072805 | 5997 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
5998 | else { |
5999 | switch (count++) { | |
6000 | case 0: | |
6001 | if (*s == 'C') | |
6002 | utf8 &= ~OPpTRANS_FROM_UTF; | |
6003 | else | |
6004 | utf8 |= OPpTRANS_FROM_UTF; | |
6005 | break; | |
6006 | case 1: | |
6007 | if (*s == 'C') | |
6008 | utf8 &= ~OPpTRANS_TO_UTF; | |
6009 | else | |
6010 | utf8 |= OPpTRANS_TO_UTF; | |
6011 | break; | |
6012 | default: | |
cea2e8a9 | 6013 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6014 | } |
6015 | } | |
395c3793 LW |
6016 | s++; |
6017 | } | |
a0ed51b3 | 6018 | o->op_private = del|squash|complement|utf8; |
79072805 | 6019 | |
3280af22 | 6020 | PL_lex_op = o; |
79072805 LW |
6021 | yylval.ival = OP_TRANS; |
6022 | return s; | |
6023 | } | |
6024 | ||
76e3520e | 6025 | STATIC char * |
cea2e8a9 | 6026 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6027 | { |
11343788 | 6028 | dTHR; |
79072805 LW |
6029 | SV *herewas; |
6030 | I32 op_type = OP_SCALAR; | |
6031 | I32 len; | |
6032 | SV *tmpstr; | |
6033 | char term; | |
6034 | register char *d; | |
fc36a67e | 6035 | register char *e; |
4633a7c4 | 6036 | char *peek; |
3280af22 | 6037 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6038 | |
6039 | s += 2; | |
3280af22 NIS |
6040 | d = PL_tokenbuf; |
6041 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6042 | if (!outer) |
79072805 | 6043 | *d++ = '\n'; |
4633a7c4 LW |
6044 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
6045 | if (*peek && strchr("`'\"",*peek)) { | |
6046 | s = peek; | |
79072805 | 6047 | term = *s++; |
3280af22 | 6048 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6049 | d += len; |
3280af22 | 6050 | if (s < PL_bufend) |
79072805 | 6051 | s++; |
79072805 LW |
6052 | } |
6053 | else { | |
6054 | if (*s == '\\') | |
6055 | s++, term = '\''; | |
6056 | else | |
6057 | term = '"'; | |
834a4ddd | 6058 | if (!isALNUM_lazy(s)) |
4633a7c4 | 6059 | deprecate("bare << to mean <<\"\""); |
834a4ddd | 6060 | for (; isALNUM_lazy(s); s++) { |
fc36a67e | 6061 | if (d < e) |
6062 | *d++ = *s; | |
6063 | } | |
6064 | } | |
3280af22 | 6065 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6066 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6067 | *d++ = '\n'; |
6068 | *d = '\0'; | |
3280af22 | 6069 | len = d - PL_tokenbuf; |
6a27c188 | 6070 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6071 | d = strchr(s, '\r'); |
6072 | if (d) { | |
6073 | char *olds = s; | |
6074 | s = d; | |
3280af22 | 6075 | while (s < PL_bufend) { |
f63a84b2 LW |
6076 | if (*s == '\r') { |
6077 | *d++ = '\n'; | |
6078 | if (*++s == '\n') | |
6079 | s++; | |
6080 | } | |
6081 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6082 | *d++ = *s++; | |
6083 | s++; | |
6084 | } | |
6085 | else | |
6086 | *d++ = *s++; | |
6087 | } | |
6088 | *d = '\0'; | |
3280af22 NIS |
6089 | PL_bufend = d; |
6090 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6091 | s = olds; |
6092 | } | |
6093 | #endif | |
79072805 | 6094 | d = "\n"; |
3280af22 | 6095 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6096 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6097 | else |
79cb57f6 | 6098 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6099 | s += SvCUR(herewas); |
748a9306 | 6100 | |
8d6dde3e | 6101 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6102 | sv_upgrade(tmpstr, SVt_PVIV); |
6103 | if (term == '\'') { | |
79072805 | 6104 | op_type = OP_CONST; |
748a9306 LW |
6105 | SvIVX(tmpstr) = -1; |
6106 | } | |
6107 | else if (term == '`') { | |
79072805 | 6108 | op_type = OP_BACKTICK; |
748a9306 LW |
6109 | SvIVX(tmpstr) = '\\'; |
6110 | } | |
79072805 LW |
6111 | |
6112 | CLINE; | |
57843af0 | 6113 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6114 | PL_multi_open = PL_multi_close = '<'; |
6115 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6116 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6117 | char *bufptr = PL_sublex_info.super_bufptr; | |
6118 | char *bufend = PL_sublex_info.super_bufend; | |
6119 | char *olds = s - SvCUR(herewas); | |
6120 | s = strchr(bufptr, '\n'); | |
6121 | if (!s) | |
6122 | s = bufend; | |
6123 | d = s; | |
6124 | while (s < bufend && | |
6125 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6126 | if (*s++ == '\n') | |
57843af0 | 6127 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6128 | } |
6129 | if (s >= bufend) { | |
57843af0 | 6130 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6131 | missingterm(PL_tokenbuf); |
6132 | } | |
6133 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6134 | sv_setpvn(tmpstr,d+1,s-d); | |
6135 | s += len - 1; | |
6136 | sv_catpvn(herewas,s,bufend-s); | |
6137 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6138 | ||
6139 | s = olds; | |
6140 | goto retval; | |
6141 | } | |
6142 | else if (!outer) { | |
79072805 | 6143 | d = s; |
3280af22 NIS |
6144 | while (s < PL_bufend && |
6145 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6146 | if (*s++ == '\n') |
57843af0 | 6147 | CopLINE_inc(PL_curcop); |
79072805 | 6148 | } |
3280af22 | 6149 | if (s >= PL_bufend) { |
57843af0 | 6150 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6151 | missingterm(PL_tokenbuf); |
79072805 LW |
6152 | } |
6153 | sv_setpvn(tmpstr,d+1,s-d); | |
6154 | s += len - 1; | |
57843af0 | 6155 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6156 | |
3280af22 NIS |
6157 | sv_catpvn(herewas,s,PL_bufend-s); |
6158 | sv_setsv(PL_linestr,herewas); | |
6159 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6160 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6161 | } |
6162 | else | |
6163 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6164 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6165 | if (!outer || |
3280af22 | 6166 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6167 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6168 | missingterm(PL_tokenbuf); |
79072805 | 6169 | } |
57843af0 | 6170 | CopLINE_inc(PL_curcop); |
3280af22 | 6171 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6172 | #ifndef PERL_STRICT_CR |
3280af22 | 6173 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6174 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6175 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6176 | { |
3280af22 NIS |
6177 | PL_bufend[-2] = '\n'; |
6178 | PL_bufend--; | |
6179 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6180 | } |
3280af22 NIS |
6181 | else if (PL_bufend[-1] == '\r') |
6182 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6183 | } |
3280af22 NIS |
6184 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6185 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6186 | #endif |
3280af22 | 6187 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6188 | SV *sv = NEWSV(88,0); |
6189 | ||
93a17b20 | 6190 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6191 | sv_setsv(sv,PL_linestr); |
57843af0 | 6192 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6193 | } |
3280af22 NIS |
6194 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6195 | s = PL_bufend - 1; | |
79072805 | 6196 | *s = ' '; |
3280af22 NIS |
6197 | sv_catsv(PL_linestr,herewas); |
6198 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6199 | } |
6200 | else { | |
3280af22 NIS |
6201 | s = PL_bufend; |
6202 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6203 | } |
6204 | } | |
79072805 | 6205 | s++; |
0244c3a4 | 6206 | retval: |
57843af0 | 6207 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6208 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6209 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6210 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6211 | } |
8990e307 | 6212 | SvREFCNT_dec(herewas); |
3280af22 | 6213 | PL_lex_stuff = tmpstr; |
79072805 LW |
6214 | yylval.ival = op_type; |
6215 | return s; | |
6216 | } | |
6217 | ||
02aa26ce NT |
6218 | /* scan_inputsymbol |
6219 | takes: current position in input buffer | |
6220 | returns: new position in input buffer | |
6221 | side-effects: yylval and lex_op are set. | |
6222 | ||
6223 | This code handles: | |
6224 | ||
6225 | <> read from ARGV | |
6226 | <FH> read from filehandle | |
6227 | <pkg::FH> read from package qualified filehandle | |
6228 | <pkg'FH> read from package qualified filehandle | |
6229 | <$fh> read from filehandle in $fh | |
6230 | <*.h> filename glob | |
6231 | ||
6232 | */ | |
6233 | ||
76e3520e | 6234 | STATIC char * |
cea2e8a9 | 6235 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6236 | { |
02aa26ce | 6237 | register char *s = start; /* current position in buffer */ |
79072805 | 6238 | register char *d; |
fc36a67e | 6239 | register char *e; |
1b420867 | 6240 | char *end; |
79072805 LW |
6241 | I32 len; |
6242 | ||
3280af22 NIS |
6243 | d = PL_tokenbuf; /* start of temp holding space */ |
6244 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6245 | end = strchr(s, '\n'); |
6246 | if (!end) | |
6247 | end = PL_bufend; | |
6248 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6249 | |
6250 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6251 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6252 | */ |
6253 | ||
3280af22 | 6254 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6255 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6256 | if (s >= end) |
cea2e8a9 | 6257 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6258 | |
fc36a67e | 6259 | s++; |
02aa26ce NT |
6260 | |
6261 | /* check for <$fh> | |
6262 | Remember, only scalar variables are interpreted as filehandles by | |
6263 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6264 | treated as a glob() call. | |
6265 | This code makes use of the fact that except for the $ at the front, | |
6266 | a scalar variable and a filehandle look the same. | |
6267 | */ | |
4633a7c4 | 6268 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6269 | |
6270 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
834a4ddd | 6271 | while (*d && (isALNUM_lazy(d) || *d == '\'' || *d == ':')) |
79072805 | 6272 | d++; |
02aa26ce NT |
6273 | |
6274 | /* If we've tried to read what we allow filehandles to look like, and | |
6275 | there's still text left, then it must be a glob() and not a getline. | |
6276 | Use scan_str to pull out the stuff between the <> and treat it | |
6277 | as nothing more than a string. | |
6278 | */ | |
6279 | ||
3280af22 | 6280 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6281 | yylval.ival = OP_GLOB; |
6282 | set_csh(); | |
09bef843 | 6283 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6284 | if (!s) |
cea2e8a9 | 6285 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6286 | return s; |
6287 | } | |
395c3793 | 6288 | else { |
02aa26ce | 6289 | /* we're in a filehandle read situation */ |
3280af22 | 6290 | d = PL_tokenbuf; |
02aa26ce NT |
6291 | |
6292 | /* turn <> into <ARGV> */ | |
79072805 LW |
6293 | if (!len) |
6294 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6295 | |
6296 | /* if <$fh>, create the ops to turn the variable into a | |
6297 | filehandle | |
6298 | */ | |
79072805 | 6299 | if (*d == '$') { |
a0d0e21e | 6300 | I32 tmp; |
02aa26ce NT |
6301 | |
6302 | /* try to find it in the pad for this block, otherwise find | |
6303 | add symbol table ops | |
6304 | */ | |
11343788 MB |
6305 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6306 | OP *o = newOP(OP_PADSV, 0); | |
6307 | o->op_targ = tmp; | |
f5284f61 | 6308 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6309 | } |
6310 | else { | |
6311 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6312 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6313 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6314 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6315 | } |
f5284f61 IZ |
6316 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6317 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6318 | yylval.ival = OP_NULL; |
6319 | } | |
02aa26ce NT |
6320 | |
6321 | /* If it's none of the above, it must be a literal filehandle | |
6322 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6323 | else { |
85e6fe83 | 6324 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6325 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6326 | yylval.ival = OP_NULL; |
6327 | } | |
6328 | } | |
02aa26ce | 6329 | |
79072805 LW |
6330 | return s; |
6331 | } | |
6332 | ||
02aa26ce NT |
6333 | |
6334 | /* scan_str | |
6335 | takes: start position in buffer | |
09bef843 SB |
6336 | keep_quoted preserve \ on the embedded delimiter(s) |
6337 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6338 | returns: position to continue reading from buffer |
6339 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6340 | updates the read buffer. | |
6341 | ||
6342 | This subroutine pulls a string out of the input. It is called for: | |
6343 | q single quotes q(literal text) | |
6344 | ' single quotes 'literal text' | |
6345 | qq double quotes qq(interpolate $here please) | |
6346 | " double quotes "interpolate $here please" | |
6347 | qx backticks qx(/bin/ls -l) | |
6348 | ` backticks `/bin/ls -l` | |
6349 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6350 | m// regexp match m/this/ | |
6351 | s/// regexp substitute s/this/that/ | |
6352 | tr/// string transliterate tr/this/that/ | |
6353 | y/// string transliterate y/this/that/ | |
6354 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6355 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6356 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6357 | ||
6358 | In most of these cases (all but <>, patterns and transliterate) | |
6359 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6360 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6361 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6362 | calls scan_str(). | |
6363 | ||
6364 | It skips whitespace before the string starts, and treats the first | |
6365 | character as the delimiter. If the delimiter is one of ([{< then | |
6366 | the corresponding "close" character )]}> is used as the closing | |
6367 | delimiter. It allows quoting of delimiters, and if the string has | |
6368 | balanced delimiters ([{<>}]) it allows nesting. | |
6369 | ||
6370 | The lexer always reads these strings into lex_stuff, except in the | |
6371 | case of the operators which take *two* arguments (s/// and tr///) | |
6372 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6373 | arg to s or tr) and if so puts the string into lex_repl. | |
6374 | ||
6375 | */ | |
6376 | ||
76e3520e | 6377 | STATIC char * |
09bef843 | 6378 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6379 | { |
11343788 | 6380 | dTHR; |
02aa26ce NT |
6381 | SV *sv; /* scalar value: string */ |
6382 | char *tmps; /* temp string, used for delimiter matching */ | |
6383 | register char *s = start; /* current position in the buffer */ | |
6384 | register char term; /* terminating character */ | |
6385 | register char *to; /* current position in the sv's data */ | |
6386 | I32 brackets = 1; /* bracket nesting level */ | |
6387 | ||
6388 | /* skip space before the delimiter */ | |
fb73857a | 6389 | if (isSPACE(*s)) |
6390 | s = skipspace(s); | |
02aa26ce NT |
6391 | |
6392 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6393 | CLINE; |
02aa26ce NT |
6394 | |
6395 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6396 | term = *s; |
02aa26ce | 6397 | /* mark where we are */ |
57843af0 | 6398 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6399 | PL_multi_open = term; |
02aa26ce NT |
6400 | |
6401 | /* find corresponding closing delimiter */ | |
93a17b20 | 6402 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6403 | term = tmps[5]; |
3280af22 | 6404 | PL_multi_close = term; |
79072805 | 6405 | |
02aa26ce | 6406 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6407 | assuming. 79 is the SV's initial length. What a random number. */ |
6408 | sv = NEWSV(87,79); | |
ed6116ce LW |
6409 | sv_upgrade(sv, SVt_PVIV); |
6410 | SvIVX(sv) = term; | |
a0d0e21e | 6411 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6412 | |
6413 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6414 | if (keep_delims) |
6415 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6416 | s++; |
6417 | for (;;) { | |
02aa26ce | 6418 | /* extend sv if need be */ |
3280af22 | 6419 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6420 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6421 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6422 | |
02aa26ce | 6423 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6424 | if (PL_multi_open == PL_multi_close) { |
6425 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6426 | /* embedded newlines increment the current line number */ |
3280af22 | 6427 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6428 | CopLINE_inc(PL_curcop); |
02aa26ce | 6429 | /* handle quoted delimiters */ |
3280af22 | 6430 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6431 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6432 | s++; |
02aa26ce | 6433 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6434 | else |
6435 | *to++ = *s++; | |
6436 | } | |
02aa26ce NT |
6437 | /* terminate when run out of buffer (the for() condition), or |
6438 | have found the terminator */ | |
93a17b20 LW |
6439 | else if (*s == term) |
6440 | break; | |
6441 | *to = *s; | |
6442 | } | |
6443 | } | |
02aa26ce NT |
6444 | |
6445 | /* if the terminator isn't the same as the start character (e.g., | |
6446 | matched brackets), we have to allow more in the quoting, and | |
6447 | be prepared for nested brackets. | |
6448 | */ | |
93a17b20 | 6449 | else { |
02aa26ce | 6450 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6451 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6452 | /* embedded newlines increment the line count */ |
3280af22 | 6453 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6454 | CopLINE_inc(PL_curcop); |
02aa26ce | 6455 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6456 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6457 | if (!keep_quoted && |
6458 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6459 | s++; |
6460 | else | |
6461 | *to++ = *s++; | |
6462 | } | |
02aa26ce | 6463 | /* allow nested opens and closes */ |
3280af22 | 6464 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6465 | break; |
3280af22 | 6466 | else if (*s == PL_multi_open) |
93a17b20 LW |
6467 | brackets++; |
6468 | *to = *s; | |
6469 | } | |
6470 | } | |
02aa26ce | 6471 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6472 | *to = '\0'; |
463ee0b2 | 6473 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6474 | |
02aa26ce NT |
6475 | /* |
6476 | * this next chunk reads more into the buffer if we're not done yet | |
6477 | */ | |
6478 | ||
3280af22 | 6479 | if (s < PL_bufend) break; /* handle case where we are done yet :-) */ |
79072805 | 6480 | |
6a27c188 | 6481 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6482 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6483 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6484 | (to[-2] == '\n' && to[-1] == '\r')) | |
6485 | { | |
f63a84b2 LW |
6486 | to[-2] = '\n'; |
6487 | to--; | |
6488 | SvCUR_set(sv, to - SvPVX(sv)); | |
6489 | } | |
6490 | else if (to[-1] == '\r') | |
6491 | to[-1] = '\n'; | |
6492 | } | |
6493 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6494 | to[-1] = '\n'; | |
6495 | #endif | |
6496 | ||
02aa26ce NT |
6497 | /* if we're out of file, or a read fails, bail and reset the current |
6498 | line marker so we can report where the unterminated string began | |
6499 | */ | |
3280af22 NIS |
6500 | if (!PL_rsfp || |
6501 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6502 | sv_free(sv); |
57843af0 | 6503 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6504 | return Nullch; |
6505 | } | |
02aa26ce | 6506 | /* we read a line, so increment our line counter */ |
57843af0 | 6507 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6508 | |
02aa26ce | 6509 | /* update debugger info */ |
3280af22 | 6510 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6511 | SV *sv = NEWSV(88,0); |
6512 | ||
93a17b20 | 6513 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6514 | sv_setsv(sv,PL_linestr); |
57843af0 | 6515 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6516 | } |
a0ed51b3 | 6517 | |
3280af22 NIS |
6518 | /* having changed the buffer, we must update PL_bufend */ |
6519 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6520 | } |
02aa26ce NT |
6521 | |
6522 | /* at this point, we have successfully read the delimited string */ | |
6523 | ||
09bef843 SB |
6524 | if (keep_delims) |
6525 | sv_catpvn(sv, s, 1); | |
57843af0 | 6526 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6527 | s++; |
02aa26ce NT |
6528 | |
6529 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6530 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6531 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6532 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6533 | } |
02aa26ce NT |
6534 | |
6535 | /* decide whether this is the first or second quoted string we've read | |
6536 | for this op | |
6537 | */ | |
6538 | ||
3280af22 NIS |
6539 | if (PL_lex_stuff) |
6540 | PL_lex_repl = sv; | |
79072805 | 6541 | else |
3280af22 | 6542 | PL_lex_stuff = sv; |
378cc40b LW |
6543 | return s; |
6544 | } | |
6545 | ||
02aa26ce NT |
6546 | /* |
6547 | scan_num | |
6548 | takes: pointer to position in buffer | |
6549 | returns: pointer to new position in buffer | |
6550 | side-effects: builds ops for the constant in yylval.op | |
6551 | ||
6552 | Read a number in any of the formats that Perl accepts: | |
6553 | ||
4f19785b | 6554 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6555 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6556 | ||
6557 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6558 | underbars before a decimal point must be at three digit intervals. | |
6559 | ||
3280af22 | 6560 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6561 | thing it reads. |
6562 | ||
6563 | If it reads a number without a decimal point or an exponent, it will | |
6564 | try converting the number to an integer and see if it can do so | |
6565 | without loss of precision. | |
6566 | */ | |
6567 | ||
378cc40b | 6568 | char * |
864dbfa3 | 6569 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6570 | { |
02aa26ce NT |
6571 | register char *s = start; /* current position in buffer */ |
6572 | register char *d; /* destination in temp buffer */ | |
6573 | register char *e; /* end of temp buffer */ | |
b8403495 | 6574 | IV tryiv; /* used to see if it can be an IV */ |
65202027 | 6575 | NV value; /* number read, as a double */ |
a7cb1f99 | 6576 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6577 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6578 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6579 | static char number_too_long[] = "Number too long"; |
378cc40b | 6580 | |
02aa26ce NT |
6581 | /* We use the first character to decide what type of number this is */ |
6582 | ||
378cc40b | 6583 | switch (*s) { |
79072805 | 6584 | default: |
cea2e8a9 | 6585 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6586 | |
6587 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6588 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6589 | case '0': |
6590 | { | |
02aa26ce NT |
6591 | /* variables: |
6592 | u holds the "number so far" | |
4f19785b WSI |
6593 | shift the power of 2 of the base |
6594 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6595 | overflowed was the number more than we can hold? |
6596 | ||
6597 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6598 | we in octal/hex/binary?" indicator to disallow hex characters |
6599 | when in octal mode. | |
02aa26ce | 6600 | */ |
f248d071 | 6601 | dTHR; |
9e24b6e2 JH |
6602 | NV n = 0.0; |
6603 | UV u = 0; | |
79072805 | 6604 | I32 shift; |
9e24b6e2 JH |
6605 | bool overflowed = FALSE; |
6606 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6607 | static char* bases[5] = { "", "binary", "", "octal", | |
6608 | "hexadecimal" }; | |
6609 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6610 | "Hexadecimal" }; | |
6611 | static char *maxima[5] = { "", | |
6612 | "0b11111111111111111111111111111111", | |
6613 | "", | |
893fe2c2 | 6614 | "037777777777", |
9e24b6e2 JH |
6615 | "0xffffffff" }; |
6616 | char *base, *Base, *max; | |
378cc40b | 6617 | |
02aa26ce | 6618 | /* check for hex */ |
378cc40b LW |
6619 | if (s[1] == 'x') { |
6620 | shift = 4; | |
6621 | s += 2; | |
4f19785b WSI |
6622 | } else if (s[1] == 'b') { |
6623 | shift = 1; | |
6624 | s += 2; | |
378cc40b | 6625 | } |
02aa26ce | 6626 | /* check for a decimal in disguise */ |
b78218b7 | 6627 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6628 | goto decimal; |
02aa26ce | 6629 | /* so it must be octal */ |
378cc40b LW |
6630 | else |
6631 | shift = 3; | |
9e24b6e2 JH |
6632 | |
6633 | base = bases[shift]; | |
6634 | Base = Bases[shift]; | |
6635 | max = maxima[shift]; | |
02aa26ce | 6636 | |
4f19785b | 6637 | /* read the rest of the number */ |
378cc40b | 6638 | for (;;) { |
9e24b6e2 | 6639 | /* x is used in the overflow test, |
893fe2c2 | 6640 | b is the digit we're adding on. */ |
9e24b6e2 | 6641 | UV x, b; |
55497cff | 6642 | |
378cc40b | 6643 | switch (*s) { |
02aa26ce NT |
6644 | |
6645 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6646 | default: |
6647 | goto out; | |
02aa26ce NT |
6648 | |
6649 | /* _ are ignored */ | |
de3bb511 LW |
6650 | case '_': |
6651 | s++; | |
6652 | break; | |
02aa26ce NT |
6653 | |
6654 | /* 8 and 9 are not octal */ | |
378cc40b | 6655 | case '8': case '9': |
4f19785b | 6656 | if (shift == 3) |
cea2e8a9 | 6657 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6658 | /* FALL THROUGH */ |
02aa26ce NT |
6659 | |
6660 | /* octal digits */ | |
4f19785b | 6661 | case '2': case '3': case '4': |
378cc40b | 6662 | case '5': case '6': case '7': |
4f19785b | 6663 | if (shift == 1) |
cea2e8a9 | 6664 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6665 | /* FALL THROUGH */ |
6666 | ||
6667 | case '0': case '1': | |
02aa26ce | 6668 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6669 | goto digit; |
02aa26ce NT |
6670 | |
6671 | /* hex digits */ | |
378cc40b LW |
6672 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6673 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6674 | /* make sure they said 0x */ |
378cc40b LW |
6675 | if (shift != 4) |
6676 | goto out; | |
55497cff | 6677 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6678 | |
6679 | /* Prepare to put the digit we have onto the end | |
6680 | of the number so far. We check for overflows. | |
6681 | */ | |
6682 | ||
55497cff | 6683 | digit: |
9e24b6e2 JH |
6684 | if (!overflowed) { |
6685 | x = u << shift; /* make room for the digit */ | |
6686 | ||
6687 | if ((x >> shift) != u | |
6688 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6689 | dTHR; | |
6690 | overflowed = TRUE; | |
6691 | n = (NV) u; | |
767a6a26 PM |
6692 | if (ckWARN_d(WARN_OVERFLOW)) |
6693 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6694 | "Integer overflow in %s number", |
6695 | base); | |
6696 | } else | |
6697 | u = x | b; /* add the digit to the end */ | |
6698 | } | |
6699 | if (overflowed) { | |
6700 | n *= nvshift[shift]; | |
6701 | /* If an NV has not enough bits in its | |
6702 | * mantissa to represent an UV this summing of | |
6703 | * small low-order numbers is a waste of time | |
6704 | * (because the NV cannot preserve the | |
6705 | * low-order bits anyway): we could just | |
6706 | * remember when did we overflow and in the | |
6707 | * end just multiply n by the right | |
6708 | * amount. */ | |
6709 | n += (NV) b; | |
55497cff | 6710 | } |
378cc40b LW |
6711 | break; |
6712 | } | |
6713 | } | |
02aa26ce NT |
6714 | |
6715 | /* if we get here, we had success: make a scalar value from | |
6716 | the number. | |
6717 | */ | |
378cc40b | 6718 | out: |
79072805 | 6719 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6720 | if (overflowed) { |
6721 | dTHR; | |
767a6a26 PM |
6722 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6723 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6724 | "%s number > %s non-portable", |
6725 | Base, max); | |
6726 | sv_setnv(sv, n); | |
6727 | } | |
6728 | else { | |
15041a67 | 6729 | #if UVSIZE > 4 |
9e24b6e2 | 6730 | dTHR; |
767a6a26 PM |
6731 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6732 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6733 | "%s number > %s non-portable", |
6734 | Base, max); | |
2cc4c2dc | 6735 | #endif |
9e24b6e2 JH |
6736 | sv_setuv(sv, u); |
6737 | } | |
2cc4c2dc | 6738 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6739 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6740 | } |
6741 | break; | |
02aa26ce NT |
6742 | |
6743 | /* | |
6744 | handle decimal numbers. | |
6745 | we're also sent here when we read a 0 as the first digit | |
6746 | */ | |
378cc40b LW |
6747 | case '1': case '2': case '3': case '4': case '5': |
6748 | case '6': case '7': case '8': case '9': case '.': | |
6749 | decimal: | |
3280af22 NIS |
6750 | d = PL_tokenbuf; |
6751 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6752 | floatit = FALSE; |
02aa26ce NT |
6753 | |
6754 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6755 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6756 | /* skip underscores, checking for misplaced ones |
6757 | if -w is on | |
6758 | */ | |
93a17b20 | 6759 | if (*s == '_') { |
d008e5eb | 6760 | dTHR; /* only for ckWARN */ |
599cee73 | 6761 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6762 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6763 | lastub = ++s; |
6764 | } | |
fc36a67e | 6765 | else { |
02aa26ce | 6766 | /* check for end of fixed-length buffer */ |
fc36a67e | 6767 | if (d >= e) |
cea2e8a9 | 6768 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6769 | /* if we're ok, copy the character */ |
378cc40b | 6770 | *d++ = *s++; |
fc36a67e | 6771 | } |
378cc40b | 6772 | } |
02aa26ce NT |
6773 | |
6774 | /* final misplaced underbar check */ | |
d008e5eb GS |
6775 | if (lastub && s - lastub != 3) { |
6776 | dTHR; | |
6777 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6778 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6779 | } |
02aa26ce NT |
6780 | |
6781 | /* read a decimal portion if there is one. avoid | |
6782 | 3..5 being interpreted as the number 3. followed | |
6783 | by .5 | |
6784 | */ | |
2f3197b3 | 6785 | if (*s == '.' && s[1] != '.') { |
79072805 | 6786 | floatit = TRUE; |
378cc40b | 6787 | *d++ = *s++; |
02aa26ce NT |
6788 | |
6789 | /* copy, ignoring underbars, until we run out of | |
6790 | digits. Note: no misplaced underbar checks! | |
6791 | */ | |
fc36a67e | 6792 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6793 | /* fixed length buffer check */ |
fc36a67e | 6794 | if (d >= e) |
cea2e8a9 | 6795 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6796 | if (*s != '_') |
6797 | *d++ = *s; | |
378cc40b LW |
6798 | } |
6799 | } | |
02aa26ce NT |
6800 | |
6801 | /* read exponent part, if present */ | |
93a17b20 | 6802 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6803 | floatit = TRUE; |
6804 | s++; | |
02aa26ce NT |
6805 | |
6806 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6807 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6808 | |
6809 | /* allow positive or negative exponent */ | |
378cc40b LW |
6810 | if (*s == '+' || *s == '-') |
6811 | *d++ = *s++; | |
02aa26ce NT |
6812 | |
6813 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6814 | while (isDIGIT(*s)) { |
6815 | if (d >= e) | |
cea2e8a9 | 6816 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6817 | *d++ = *s++; |
fc36a67e | 6818 | } |
378cc40b | 6819 | } |
02aa26ce NT |
6820 | |
6821 | /* terminate the string */ | |
378cc40b | 6822 | *d = '\0'; |
02aa26ce NT |
6823 | |
6824 | /* make an sv from the string */ | |
79072805 | 6825 | sv = NEWSV(92,0); |
097ee67d JH |
6826 | |
6827 | value = Atof(PL_tokenbuf); | |
02aa26ce NT |
6828 | |
6829 | /* | |
6830 | See if we can make do with an integer value without loss of | |
6831 | precision. We use I_V to cast to an int, because some | |
6832 | compilers have issues. Then we try casting it back and see | |
6833 | if it was the same. We only do this if we know we | |
6834 | specifically read an integer. | |
6835 | ||
6836 | Note: if floatit is true, then we don't need to do the | |
6837 | conversion at all. | |
6838 | */ | |
1e422769 | 6839 | tryiv = I_V(value); |
65202027 | 6840 | if (!floatit && (NV)tryiv == value) |
1e422769 | 6841 | sv_setiv(sv, tryiv); |
2f3197b3 | 6842 | else |
1e422769 | 6843 | sv_setnv(sv, value); |
b8403495 JH |
6844 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
6845 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 6846 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
6847 | (floatit ? "float" : "integer"), |
6848 | sv, Nullsv, NULL); | |
378cc40b | 6849 | break; |
a7cb1f99 GS |
6850 | /* if it starts with a v, it could be a version number */ |
6851 | case 'v': | |
6852 | { | |
a7cb1f99 GS |
6853 | char *pos = s; |
6854 | pos++; | |
6855 | while (isDIGIT(*pos)) | |
6856 | pos++; | |
6857 | if (*pos == '.' && isDIGIT(pos[1])) { | |
f83ee824 | 6858 | UV rev; |
a7cb1f99 GS |
6859 | U8 tmpbuf[10]; |
6860 | U8 *tmpend; | |
6861 | NV nshift = 1.0; | |
6862 | s++; /* get past 'v' */ | |
6863 | ||
6864 | sv = NEWSV(92,5); | |
6865 | SvUPGRADE(sv, SVt_PVNV); | |
6866 | sv_setpvn(sv, "", 0); | |
6867 | ||
6868 | do { | |
6869 | rev = atoi(s); | |
6870 | s = ++pos; | |
6871 | while (isDIGIT(*pos)) | |
6872 | pos++; | |
6873 | ||
6874 | tmpend = uv_to_utf8(tmpbuf, rev); | |
6875 | *tmpend = '\0'; | |
33079e28 | 6876 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
a7cb1f99 GS |
6877 | if (rev > 0) |
6878 | SvNVX(sv) += (NV)rev/nshift; | |
6879 | nshift *= 1000; | |
6880 | } while (*pos == '.' && isDIGIT(pos[1])); | |
6881 | ||
6882 | rev = atoi(s); | |
6883 | s = pos; | |
6884 | tmpend = uv_to_utf8(tmpbuf, rev); | |
6885 | *tmpend = '\0'; | |
33079e28 | 6886 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
a7cb1f99 GS |
6887 | if (rev > 0) |
6888 | SvNVX(sv) += (NV)rev/nshift; | |
6889 | ||
6890 | SvPOK_on(sv); | |
6891 | SvNOK_on(sv); | |
6892 | SvREADONLY_on(sv); | |
6893 | SvUTF8_on(sv); | |
6894 | } | |
6895 | } | |
6896 | break; | |
79072805 | 6897 | } |
a687059c | 6898 | |
02aa26ce NT |
6899 | /* make the op for the constant and return */ |
6900 | ||
a7cb1f99 GS |
6901 | if (sv) |
6902 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
6903 | else | |
6904 | yylval.opval = Nullop; | |
a687059c | 6905 | |
378cc40b LW |
6906 | return s; |
6907 | } | |
6908 | ||
76e3520e | 6909 | STATIC char * |
cea2e8a9 | 6910 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 6911 | { |
11343788 | 6912 | dTHR; |
79072805 | 6913 | register char *eol; |
378cc40b | 6914 | register char *t; |
79cb57f6 | 6915 | SV *stuff = newSVpvn("",0); |
79072805 | 6916 | bool needargs = FALSE; |
378cc40b | 6917 | |
79072805 | 6918 | while (!needargs) { |
85e6fe83 | 6919 | if (*s == '.' || *s == '}') { |
79072805 | 6920 | /*SUPPRESS 530*/ |
51882d45 GS |
6921 | #ifdef PERL_STRICT_CR |
6922 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6923 | #else | |
6924 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6925 | #endif | |
6a65c6a0 | 6926 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
6927 | break; |
6928 | } | |
3280af22 | 6929 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6930 | eol = strchr(s,'\n'); |
0f85fab0 | 6931 | if (!eol++) |
3280af22 | 6932 | eol = PL_bufend; |
0f85fab0 LW |
6933 | } |
6934 | else | |
3280af22 | 6935 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6936 | if (*s != '#') { |
a0d0e21e LW |
6937 | for (t = s; t < eol; t++) { |
6938 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6939 | needargs = FALSE; | |
6940 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6941 | } |
a0d0e21e LW |
6942 | if (*t == '@' || *t == '^') |
6943 | needargs = TRUE; | |
378cc40b | 6944 | } |
a0d0e21e | 6945 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
6946 | #ifndef PERL_STRICT_CR |
6947 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
6948 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
6949 | end[-2] = '\n'; | |
6950 | end[-1] = '\0'; | |
6951 | SvCUR(stuff)--; | |
6952 | } | |
6953 | #endif | |
79072805 LW |
6954 | } |
6955 | s = eol; | |
3280af22 NIS |
6956 | if (PL_rsfp) { |
6957 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
6958 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
6959 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 6960 | if (!s) { |
3280af22 | 6961 | s = PL_bufptr; |
79072805 | 6962 | yyerror("Format not terminated"); |
378cc40b LW |
6963 | break; |
6964 | } | |
378cc40b | 6965 | } |
463ee0b2 | 6966 | incline(s); |
79072805 | 6967 | } |
a0d0e21e LW |
6968 | enough: |
6969 | if (SvCUR(stuff)) { | |
3280af22 | 6970 | PL_expect = XTERM; |
79072805 | 6971 | if (needargs) { |
3280af22 NIS |
6972 | PL_lex_state = LEX_NORMAL; |
6973 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
6974 | force_next(','); |
6975 | } | |
a0d0e21e | 6976 | else |
3280af22 NIS |
6977 | PL_lex_state = LEX_FORMLINE; |
6978 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 6979 | force_next(THING); |
3280af22 | 6980 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 6981 | force_next(LSTOP); |
378cc40b | 6982 | } |
79072805 | 6983 | else { |
8990e307 | 6984 | SvREFCNT_dec(stuff); |
3280af22 NIS |
6985 | PL_lex_formbrack = 0; |
6986 | PL_bufptr = s; | |
79072805 LW |
6987 | } |
6988 | return s; | |
378cc40b | 6989 | } |
a687059c | 6990 | |
76e3520e | 6991 | STATIC void |
cea2e8a9 | 6992 | S_set_csh(pTHX) |
a687059c | 6993 | { |
ae986130 | 6994 | #ifdef CSH |
3280af22 NIS |
6995 | if (!PL_cshlen) |
6996 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 6997 | #endif |
a687059c | 6998 | } |
463ee0b2 | 6999 | |
ba6d6ac9 | 7000 | I32 |
864dbfa3 | 7001 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7002 | { |
11343788 | 7003 | dTHR; |
3280af22 NIS |
7004 | I32 oldsavestack_ix = PL_savestack_ix; |
7005 | CV* outsidecv = PL_compcv; | |
748a9306 | 7006 | AV* comppadlist; |
8990e307 | 7007 | |
3280af22 NIS |
7008 | if (PL_compcv) { |
7009 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7010 | } |
7766f137 | 7011 | SAVEI32(PL_subline); |
3280af22 NIS |
7012 | save_item(PL_subname); |
7013 | SAVEI32(PL_padix); | |
7766f137 | 7014 | SAVEVPTR(PL_curpad); |
3280af22 NIS |
7015 | SAVESPTR(PL_comppad); |
7016 | SAVESPTR(PL_comppad_name); | |
7017 | SAVESPTR(PL_compcv); | |
7018 | SAVEI32(PL_comppad_name_fill); | |
7019 | SAVEI32(PL_min_intro_pending); | |
7020 | SAVEI32(PL_max_intro_pending); | |
7021 | SAVEI32(PL_pad_reset_pending); | |
7022 | ||
7023 | PL_compcv = (CV*)NEWSV(1104,0); | |
7024 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7025 | CvFLAGS(PL_compcv) |= flags; | |
7026 | ||
7027 | PL_comppad = newAV(); | |
7028 | av_push(PL_comppad, Nullsv); | |
7029 | PL_curpad = AvARRAY(PL_comppad); | |
7030 | PL_comppad_name = newAV(); | |
7031 | PL_comppad_name_fill = 0; | |
7032 | PL_min_intro_pending = 0; | |
7033 | PL_padix = 0; | |
57843af0 | 7034 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7035 | #ifdef USE_THREADS |
79cb57f6 | 7036 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7037 | PL_curpad[0] = (SV*)newAV(); |
7038 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7039 | #endif /* USE_THREADS */ |
748a9306 LW |
7040 | |
7041 | comppadlist = newAV(); | |
7042 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7043 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7044 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7045 | |
3280af22 NIS |
7046 | CvPADLIST(PL_compcv) = comppadlist; |
7047 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7048 | #ifdef USE_THREADS |
533c011a NIS |
7049 | CvOWNER(PL_compcv) = 0; |
7050 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7051 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7052 | #endif /* USE_THREADS */ |
748a9306 | 7053 | |
8990e307 LW |
7054 | return oldsavestack_ix; |
7055 | } | |
7056 | ||
7057 | int | |
864dbfa3 | 7058 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7059 | { |
11343788 | 7060 | dTHR; |
faef0170 | 7061 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7062 | yyerror(s); |
faef0170 | 7063 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7064 | return 0; |
8990e307 LW |
7065 | } |
7066 | ||
7067 | int | |
864dbfa3 | 7068 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7069 | { |
11343788 | 7070 | dTHR; |
68dc0745 | 7071 | char *where = NULL; |
7072 | char *context = NULL; | |
7073 | int contlen = -1; | |
46fc3d4c | 7074 | SV *msg; |
463ee0b2 | 7075 | |
3280af22 | 7076 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7077 | where = "at EOF"; |
3280af22 NIS |
7078 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7079 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7080 | while (isSPACE(*PL_oldoldbufptr)) | |
7081 | PL_oldoldbufptr++; | |
7082 | context = PL_oldoldbufptr; | |
7083 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7084 | } |
3280af22 NIS |
7085 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7086 | PL_oldbufptr != PL_bufptr) { | |
7087 | while (isSPACE(*PL_oldbufptr)) | |
7088 | PL_oldbufptr++; | |
7089 | context = PL_oldbufptr; | |
7090 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7091 | } |
7092 | else if (yychar > 255) | |
68dc0745 | 7093 | where = "next token ???"; |
463ee0b2 | 7094 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
7095 | if (PL_lex_state == LEX_NORMAL || |
7096 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7097 | where = "at end of line"; |
3280af22 | 7098 | else if (PL_lex_inpat) |
68dc0745 | 7099 | where = "within pattern"; |
463ee0b2 | 7100 | else |
68dc0745 | 7101 | where = "within string"; |
463ee0b2 | 7102 | } |
46fc3d4c | 7103 | else { |
79cb57f6 | 7104 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7105 | if (yychar < 32) |
cea2e8a9 | 7106 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7107 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7108 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7109 | else |
cea2e8a9 | 7110 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7111 | where = SvPVX(where_sv); |
463ee0b2 | 7112 | } |
46fc3d4c | 7113 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7114 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7115 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7116 | if (context) |
cea2e8a9 | 7117 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7118 | else |
cea2e8a9 | 7119 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7120 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7121 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7122 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7123 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7124 | PL_multi_end = 0; |
a0d0e21e | 7125 | } |
faef0170 | 7126 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7127 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7128 | else |
5a844595 GS |
7129 | qerror(msg); |
7130 | if (PL_error_count >= 10) | |
ed094faf | 7131 | Perl_croak(aTHX_ "%s has too many errors.\n", CopFILE(PL_curcop)); |
3280af22 NIS |
7132 | PL_in_my = 0; |
7133 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7134 | return 0; |
7135 | } | |
4e35701f | 7136 | |
161b471a | 7137 | |
51371543 | 7138 | #ifdef PERL_OBJECT |
51371543 GS |
7139 | #include "XSUB.h" |
7140 | #endif | |
7141 | ||
ffb4593c NT |
7142 | /* |
7143 | * restore_rsfp | |
7144 | * Restore a source filter. | |
7145 | */ | |
7146 | ||
51371543 GS |
7147 | static void |
7148 | restore_rsfp(pTHXo_ void *f) | |
7149 | { | |
7150 | PerlIO *fp = (PerlIO*)f; | |
7151 | ||
7152 | if (PL_rsfp == PerlIO_stdin()) | |
7153 | PerlIO_clearerr(PL_rsfp); | |
7154 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7155 | PerlIO_close(PL_rsfp); | |
7156 | PL_rsfp = fp; | |
7157 | } |