Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
3818b22b | 3 | * Copyright (c) 1991-2000, 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 | ||
7e2040f0 | 35 | /*#define UTF (SvUTF8(PL_linestr) && !(PL_hints & HINT_BYTE))*/ |
a0ed51b3 LW |
36 | #define UTF (PL_hints & HINT_UTF8) |
37 | ||
2b92dfce GS |
38 | /* In variables name $^X, these are the legal values for X. |
39 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
40 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
41 | ||
bf4acbe4 GS |
42 | /* On MacOS, respect nonbreaking spaces */ |
43 | #ifdef MACOS_TRADITIONAL | |
44 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\312'||(c)=='\t') | |
45 | #else | |
46 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') | |
47 | #endif | |
48 | ||
ffb4593c NT |
49 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
50 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
51 | * can get by with a single comparison (if the compiler is smart enough). |
52 | */ | |
53 | ||
fb73857a | 54 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
55 | ||
55497cff | 56 | #define LEX_NORMAL 10 |
57 | #define LEX_INTERPNORMAL 9 | |
58 | #define LEX_INTERPCASEMOD 8 | |
59 | #define LEX_INTERPPUSH 7 | |
60 | #define LEX_INTERPSTART 6 | |
61 | #define LEX_INTERPEND 5 | |
62 | #define LEX_INTERPENDMAYBE 4 | |
63 | #define LEX_INTERPCONCAT 3 | |
64 | #define LEX_INTERPCONST 2 | |
65 | #define LEX_FORMLINE 1 | |
66 | #define LEX_KNOWNEXT 0 | |
79072805 | 67 | |
a790bc05 | 68 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
69 | #ifdef I_UNISTD | |
70 | # include <unistd.h> /* Needed for execv() */ | |
71 | #endif | |
72 | ||
73 | ||
79072805 LW |
74 | #ifdef ff_next |
75 | #undef ff_next | |
d48672a2 LW |
76 | #endif |
77 | ||
a1a0e61e TD |
78 | #ifdef USE_PURE_BISON |
79 | YYSTYPE* yylval_pointer = NULL; | |
80 | int* yychar_pointer = NULL; | |
22c35a8c GS |
81 | # undef yylval |
82 | # undef yychar | |
e4bfbdd4 JH |
83 | # define yylval (*yylval_pointer) |
84 | # define yychar (*yychar_pointer) | |
85 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
86 | # undef yylex |
87 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
88 | #endif |
89 | ||
79072805 | 90 | #include "keywords.h" |
fe14fcc3 | 91 | |
ffb4593c NT |
92 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
93 | ||
ae986130 LW |
94 | #ifdef CLINE |
95 | #undef CLINE | |
96 | #endif | |
57843af0 | 97 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 98 | |
ffb4593c NT |
99 | /* |
100 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 101 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
102 | * |
103 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
104 | * OPERATOR : generic operator | |
105 | * AOPERATOR : assignment operator | |
106 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
107 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
108 | * PREREF : *EXPR where EXPR is not a simple identifier | |
109 | * TERM : expression term | |
110 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
111 | * FTST : file test operator | |
112 | * FUN0 : zero-argument function | |
2d2e263d | 113 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
114 | * BOop : bitwise or or xor |
115 | * BAop : bitwise and | |
116 | * SHop : shift operator | |
117 | * PWop : power operator | |
9cbb5ea2 | 118 | * PMop : pattern-matching operator |
ffb4593c NT |
119 | * Aop : addition-level operator |
120 | * Mop : multiplication-level operator | |
121 | * Eop : equality-testing operator | |
122 | * Rop : relational operator <= != gt | |
123 | * | |
124 | * Also see LOP and lop() below. | |
125 | */ | |
126 | ||
3280af22 NIS |
127 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
128 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
129 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
130 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
131 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
132 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
133 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
134 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
135 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
136 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
137 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
138 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
139 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
140 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
141 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
142 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
143 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
144 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
145 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
146 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 147 | |
a687059c LW |
148 | /* This bit of chicanery makes a unary function followed by |
149 | * a parenthesis into a function with one argument, highest precedence. | |
150 | */ | |
2f3197b3 | 151 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
152 | PL_expect = XTERM, \ |
153 | PL_bufptr = s, \ | |
154 | PL_last_uni = PL_oldbufptr, \ | |
155 | PL_last_lop_op = f, \ | |
a687059c LW |
156 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
157 | ||
79072805 | 158 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
159 | PL_bufptr = s, \ |
160 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
161 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
162 | ||
9f68db38 | 163 | /* grandfather return to old style */ |
3280af22 | 164 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 165 | |
ffb4593c NT |
166 | /* |
167 | * S_ao | |
168 | * | |
169 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
170 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
171 | */ | |
172 | ||
76e3520e | 173 | STATIC int |
cea2e8a9 | 174 | S_ao(pTHX_ int toketype) |
a0d0e21e | 175 | { |
3280af22 NIS |
176 | if (*PL_bufptr == '=') { |
177 | PL_bufptr++; | |
a0d0e21e LW |
178 | if (toketype == ANDAND) |
179 | yylval.ival = OP_ANDASSIGN; | |
180 | else if (toketype == OROR) | |
181 | yylval.ival = OP_ORASSIGN; | |
182 | toketype = ASSIGNOP; | |
183 | } | |
184 | return toketype; | |
185 | } | |
186 | ||
ffb4593c NT |
187 | /* |
188 | * S_no_op | |
189 | * When Perl expects an operator and finds something else, no_op | |
190 | * prints the warning. It always prints "<something> found where | |
191 | * operator expected. It prints "Missing semicolon on previous line?" | |
192 | * if the surprise occurs at the start of the line. "do you need to | |
193 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
194 | * where the compiler doesn't know if foo is a method call or a function. | |
195 | * It prints "Missing operator before end of line" if there's nothing | |
196 | * after the missing operator, or "... before <...>" if there is something | |
197 | * after the missing operator. | |
198 | */ | |
199 | ||
76e3520e | 200 | STATIC void |
cea2e8a9 | 201 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 202 | { |
3280af22 NIS |
203 | char *oldbp = PL_bufptr; |
204 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 205 | |
1189a94a GS |
206 | if (!s) |
207 | s = oldbp; | |
208 | else { | |
209 | assert(s >= oldbp); | |
210 | PL_bufptr = s; | |
211 | } | |
cea2e8a9 | 212 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 213 | if (is_first) |
cea2e8a9 | 214 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 215 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 216 | char *t; |
7e2040f0 | 217 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 218 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 219 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 220 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
221 | } |
222 | else | |
cea2e8a9 | 223 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 224 | PL_bufptr = oldbp; |
8990e307 LW |
225 | } |
226 | ||
ffb4593c NT |
227 | /* |
228 | * S_missingterm | |
229 | * Complain about missing quote/regexp/heredoc terminator. | |
230 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
231 | * If we're in a delimited string and the delimiter is a control | |
232 | * character, it's reformatted into a two-char sequence like ^C. | |
233 | * This is fatal. | |
234 | */ | |
235 | ||
76e3520e | 236 | STATIC void |
cea2e8a9 | 237 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
238 | { |
239 | char tmpbuf[3]; | |
240 | char q; | |
241 | if (s) { | |
242 | char *nl = strrchr(s,'\n'); | |
d2719217 | 243 | if (nl) |
8990e307 LW |
244 | *nl = '\0'; |
245 | } | |
9d116dd7 JH |
246 | else if ( |
247 | #ifdef EBCDIC | |
248 | iscntrl(PL_multi_close) | |
249 | #else | |
250 | PL_multi_close < 32 || PL_multi_close == 127 | |
251 | #endif | |
252 | ) { | |
8990e307 | 253 | *tmpbuf = '^'; |
3280af22 | 254 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
255 | s = "\\n"; |
256 | tmpbuf[2] = '\0'; | |
257 | s = tmpbuf; | |
258 | } | |
259 | else { | |
3280af22 | 260 | *tmpbuf = PL_multi_close; |
8990e307 LW |
261 | tmpbuf[1] = '\0'; |
262 | s = tmpbuf; | |
263 | } | |
264 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 265 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 266 | } |
79072805 | 267 | |
ffb4593c NT |
268 | /* |
269 | * Perl_deprecate | |
ffb4593c NT |
270 | */ |
271 | ||
79072805 | 272 | void |
864dbfa3 | 273 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 274 | { |
d008e5eb | 275 | dTHR; |
599cee73 | 276 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 277 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
278 | } |
279 | ||
ffb4593c NT |
280 | /* |
281 | * depcom | |
9cbb5ea2 | 282 | * Deprecate a comma-less variable list. |
ffb4593c NT |
283 | */ |
284 | ||
76e3520e | 285 | STATIC void |
cea2e8a9 | 286 | S_depcom(pTHX) |
a0d0e21e LW |
287 | { |
288 | deprecate("comma-less variable list"); | |
289 | } | |
290 | ||
ffb4593c | 291 | /* |
9cbb5ea2 GS |
292 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
293 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
294 | */ |
295 | ||
c39cd008 GS |
296 | #ifdef PERL_CR_FILTER |
297 | static void | |
298 | strip_return(SV *sv) | |
299 | { | |
300 | register char *s = SvPVX(sv); | |
301 | register char *e = s + SvCUR(sv); | |
302 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
303 | while (s < e) { | |
304 | if (*s++ == '\r' && *s == '\n') { | |
305 | /* hit a CR-LF, need to copy the rest */ | |
306 | register char *d = s - 1; | |
307 | *d++ = *s++; | |
308 | while (s < e) { | |
309 | if (*s == '\r' && s[1] == '\n') | |
310 | s++; | |
311 | *d++ = *s++; | |
312 | } | |
313 | SvCUR(sv) -= s - d; | |
314 | return; | |
315 | } | |
316 | } | |
317 | } | |
a868473f | 318 | |
76e3520e | 319 | STATIC I32 |
c39cd008 | 320 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 321 | { |
c39cd008 GS |
322 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
323 | if (count > 0 && !maxlen) | |
324 | strip_return(sv); | |
325 | return count; | |
a868473f NIS |
326 | } |
327 | #endif | |
328 | ||
01ec43d0 | 329 | #ifndef PERL_NO_UTF16_FILTER |
a0ed51b3 | 330 | STATIC I32 |
cea2e8a9 | 331 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
332 | { |
333 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
334 | if (count) { | |
dfe13c55 GS |
335 | U8* tmps; |
336 | U8* tend; | |
337 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 338 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 339 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
340 | } |
341 | return count; | |
342 | } | |
343 | ||
344 | STATIC I32 | |
cea2e8a9 | 345 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
346 | { |
347 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
348 | if (count) { | |
dfe13c55 GS |
349 | U8* tmps; |
350 | U8* tend; | |
351 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 352 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 353 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
354 | } |
355 | return count; | |
356 | } | |
155aba94 | 357 | #endif |
a868473f | 358 | |
ffb4593c NT |
359 | /* |
360 | * Perl_lex_start | |
9cbb5ea2 GS |
361 | * Initialize variables. Uses the Perl save_stack to save its state (for |
362 | * recursive calls to the parser). | |
ffb4593c NT |
363 | */ |
364 | ||
a0d0e21e | 365 | void |
864dbfa3 | 366 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 367 | { |
0f15f207 | 368 | dTHR; |
8990e307 LW |
369 | char *s; |
370 | STRLEN len; | |
371 | ||
3280af22 NIS |
372 | SAVEI32(PL_lex_dojoin); |
373 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
374 | SAVEI32(PL_lex_casemods); |
375 | SAVEI32(PL_lex_starts); | |
376 | SAVEI32(PL_lex_state); | |
7766f137 | 377 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 378 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
379 | if (PL_lex_state == LEX_KNOWNEXT) { |
380 | I32 toke = PL_nexttoke; | |
381 | while (--toke >= 0) { | |
382 | SAVEI32(PL_nexttype[toke]); | |
383 | SAVEVPTR(PL_nextval[toke]); | |
384 | } | |
385 | SAVEI32(PL_nexttoke); | |
386 | PL_nexttoke = 0; | |
387 | } | |
57843af0 | 388 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
389 | SAVEPPTR(PL_bufptr); |
390 | SAVEPPTR(PL_bufend); | |
391 | SAVEPPTR(PL_oldbufptr); | |
392 | SAVEPPTR(PL_oldoldbufptr); | |
393 | SAVEPPTR(PL_linestart); | |
394 | SAVESPTR(PL_linestr); | |
395 | SAVEPPTR(PL_lex_brackstack); | |
396 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 397 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
398 | SAVESPTR(PL_lex_stuff); |
399 | SAVEI32(PL_lex_defer); | |
09bef843 | 400 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 401 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
402 | SAVEINT(PL_expect); |
403 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
404 | |
405 | PL_lex_state = LEX_NORMAL; | |
406 | PL_lex_defer = 0; | |
407 | PL_expect = XSTATE; | |
408 | PL_lex_brackets = 0; | |
3280af22 NIS |
409 | New(899, PL_lex_brackstack, 120, char); |
410 | New(899, PL_lex_casestack, 12, char); | |
411 | SAVEFREEPV(PL_lex_brackstack); | |
412 | SAVEFREEPV(PL_lex_casestack); | |
413 | PL_lex_casemods = 0; | |
414 | *PL_lex_casestack = '\0'; | |
415 | PL_lex_dojoin = 0; | |
416 | PL_lex_starts = 0; | |
417 | PL_lex_stuff = Nullsv; | |
418 | PL_lex_repl = Nullsv; | |
419 | PL_lex_inpat = 0; | |
420 | PL_lex_inwhat = 0; | |
09bef843 | 421 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
422 | PL_linestr = line; |
423 | if (SvREADONLY(PL_linestr)) | |
424 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
425 | s = SvPV(PL_linestr, len); | |
8990e307 | 426 | if (len && s[len-1] != ';') { |
3280af22 NIS |
427 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
428 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
429 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 430 | } |
3280af22 NIS |
431 | SvTEMP_off(PL_linestr); |
432 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
433 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
434 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 435 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 436 | PL_rsfp = 0; |
79072805 | 437 | } |
a687059c | 438 | |
ffb4593c NT |
439 | /* |
440 | * Perl_lex_end | |
9cbb5ea2 GS |
441 | * Finalizer for lexing operations. Must be called when the parser is |
442 | * done with the lexer. | |
ffb4593c NT |
443 | */ |
444 | ||
463ee0b2 | 445 | void |
864dbfa3 | 446 | Perl_lex_end(pTHX) |
463ee0b2 | 447 | { |
3280af22 | 448 | PL_doextract = FALSE; |
463ee0b2 LW |
449 | } |
450 | ||
ffb4593c NT |
451 | /* |
452 | * S_incline | |
453 | * This subroutine has nothing to do with tilting, whether at windmills | |
454 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 455 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 456 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
457 | * # line 500 "foo.pm" |
458 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
459 | */ |
460 | ||
76e3520e | 461 | STATIC void |
cea2e8a9 | 462 | S_incline(pTHX_ char *s) |
463ee0b2 | 463 | { |
0f15f207 | 464 | dTHR; |
463ee0b2 LW |
465 | char *t; |
466 | char *n; | |
73659bf1 | 467 | char *e; |
463ee0b2 | 468 | char ch; |
463ee0b2 | 469 | |
57843af0 | 470 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
471 | if (*s++ != '#') |
472 | return; | |
bf4acbe4 | 473 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
474 | if (strnEQ(s, "line", 4)) |
475 | s += 4; | |
476 | else | |
477 | return; | |
478 | if (*s == ' ' || *s == '\t') | |
479 | s++; | |
480 | else | |
481 | return; | |
bf4acbe4 | 482 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
483 | if (!isDIGIT(*s)) |
484 | return; | |
485 | n = s; | |
486 | while (isDIGIT(*s)) | |
487 | s++; | |
bf4acbe4 | 488 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 489 | s++; |
73659bf1 | 490 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 491 | s++; |
73659bf1 GS |
492 | e = t + 1; |
493 | } | |
463ee0b2 | 494 | else { |
463ee0b2 | 495 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 496 | e = t; |
463ee0b2 | 497 | } |
bf4acbe4 | 498 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
499 | e++; |
500 | if (*e != '\n' && *e != '\0') | |
501 | return; /* false alarm */ | |
502 | ||
463ee0b2 LW |
503 | ch = *t; |
504 | *t = '\0'; | |
f4dd75d9 GS |
505 | if (t - s > 0) { |
506 | #ifdef USE_ITHREADS | |
507 | Safefree(CopFILE(PL_curcop)); | |
508 | #else | |
509 | SvREFCNT_dec(CopFILEGV(PL_curcop)); | |
510 | #endif | |
57843af0 | 511 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 512 | } |
463ee0b2 | 513 | *t = ch; |
57843af0 | 514 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
515 | } |
516 | ||
ffb4593c NT |
517 | /* |
518 | * S_skipspace | |
519 | * Called to gobble the appropriate amount and type of whitespace. | |
520 | * Skips comments as well. | |
521 | */ | |
522 | ||
76e3520e | 523 | STATIC char * |
cea2e8a9 | 524 | S_skipspace(pTHX_ register char *s) |
a687059c | 525 | { |
11343788 | 526 | dTHR; |
3280af22 | 527 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 528 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
529 | s++; |
530 | return s; | |
531 | } | |
532 | for (;;) { | |
fd049845 | 533 | STRLEN prevlen; |
09bef843 SB |
534 | SSize_t oldprevlen, oldoldprevlen; |
535 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
536 | while (s < PL_bufend && isSPACE(*s)) { |
537 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
538 | incline(s); | |
539 | } | |
ffb4593c NT |
540 | |
541 | /* comment */ | |
3280af22 NIS |
542 | if (s < PL_bufend && *s == '#') { |
543 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 544 | s++; |
60e6418e | 545 | if (s < PL_bufend) { |
463ee0b2 | 546 | s++; |
60e6418e GS |
547 | if (PL_in_eval && !PL_rsfp) { |
548 | incline(s); | |
549 | continue; | |
550 | } | |
551 | } | |
463ee0b2 | 552 | } |
ffb4593c NT |
553 | |
554 | /* only continue to recharge the buffer if we're at the end | |
555 | * of the buffer, we're not reading from a source filter, and | |
556 | * we're in normal lexing mode | |
557 | */ | |
09bef843 SB |
558 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
559 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 560 | return s; |
ffb4593c NT |
561 | |
562 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
563 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
564 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
565 | { | |
566 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
567 | if (PL_minus_n || PL_minus_p) { |
568 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
569 | ";}continue{print or die qq(-p destination: $!\\n)" : |
570 | ""); | |
3280af22 NIS |
571 | sv_catpv(PL_linestr,";}"); |
572 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
573 | } |
574 | else | |
3280af22 | 575 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
576 | |
577 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
578 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
579 | = SvPVX(PL_linestr); | |
3280af22 | 580 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
581 | |
582 | /* Close the filehandle. Could be from -P preprocessor, | |
583 | * STDIN, or a regular file. If we were reading code from | |
584 | * STDIN (because the commandline held no -e or filename) | |
585 | * then we don't close it, we reset it so the code can | |
586 | * read from STDIN too. | |
587 | */ | |
588 | ||
3280af22 NIS |
589 | if (PL_preprocess && !PL_in_eval) |
590 | (void)PerlProc_pclose(PL_rsfp); | |
591 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
592 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 593 | else |
3280af22 NIS |
594 | (void)PerlIO_close(PL_rsfp); |
595 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
596 | return s; |
597 | } | |
ffb4593c NT |
598 | |
599 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
600 | /* make corresponding updates to old pointers, for yyerror() */ |
601 | oldprevlen = PL_oldbufptr - PL_bufend; | |
602 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
603 | if (PL_last_uni) | |
604 | oldunilen = PL_last_uni - PL_bufend; | |
605 | if (PL_last_lop) | |
606 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
607 | PL_linestart = PL_bufptr = s + prevlen; |
608 | PL_bufend = s + SvCUR(PL_linestr); | |
609 | s = PL_bufptr; | |
09bef843 SB |
610 | PL_oldbufptr = s + oldprevlen; |
611 | PL_oldoldbufptr = s + oldoldprevlen; | |
612 | if (PL_last_uni) | |
613 | PL_last_uni = s + oldunilen; | |
614 | if (PL_last_lop) | |
615 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 616 | incline(s); |
ffb4593c NT |
617 | |
618 | /* debugger active and we're not compiling the debugger code, | |
619 | * so store the line into the debugger's array of lines | |
620 | */ | |
3280af22 | 621 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
622 | SV *sv = NEWSV(85,0); |
623 | ||
624 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 625 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
57843af0 | 626 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 627 | } |
463ee0b2 | 628 | } |
a687059c | 629 | } |
378cc40b | 630 | |
ffb4593c NT |
631 | /* |
632 | * S_check_uni | |
633 | * Check the unary operators to ensure there's no ambiguity in how they're | |
634 | * used. An ambiguous piece of code would be: | |
635 | * rand + 5 | |
636 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
637 | * the +5 is its argument. | |
638 | */ | |
639 | ||
76e3520e | 640 | STATIC void |
cea2e8a9 | 641 | S_check_uni(pTHX) |
ba106d47 | 642 | { |
2f3197b3 | 643 | char *s; |
a0d0e21e | 644 | char *t; |
0453d815 | 645 | dTHR; |
2f3197b3 | 646 | |
3280af22 | 647 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 648 | return; |
3280af22 NIS |
649 | while (isSPACE(*PL_last_uni)) |
650 | PL_last_uni++; | |
7e2040f0 | 651 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 652 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 653 | return; |
0453d815 | 654 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 655 | char ch = *s; |
0453d815 PM |
656 | *s = '\0'; |
657 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
658 | "Warning: Use of \"%s\" without parens is ambiguous", | |
659 | PL_last_uni); | |
660 | *s = ch; | |
661 | } | |
2f3197b3 LW |
662 | } |
663 | ||
ffb4593c NT |
664 | /* workaround to replace the UNI() macro with a function. Only the |
665 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
666 | * source indicate Microport Unix might need it too. | |
667 | */ | |
668 | ||
ffed7fef LW |
669 | #ifdef CRIPPLED_CC |
670 | ||
671 | #undef UNI | |
ffed7fef | 672 | #define UNI(f) return uni(f,s) |
ffed7fef | 673 | |
76e3520e | 674 | STATIC int |
cea2e8a9 | 675 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
676 | { |
677 | yylval.ival = f; | |
3280af22 NIS |
678 | PL_expect = XTERM; |
679 | PL_bufptr = s; | |
8f872242 NIS |
680 | PL_last_uni = PL_oldbufptr; |
681 | PL_last_lop_op = f; | |
ffed7fef LW |
682 | if (*s == '(') |
683 | return FUNC1; | |
684 | s = skipspace(s); | |
685 | if (*s == '(') | |
686 | return FUNC1; | |
687 | else | |
688 | return UNIOP; | |
689 | } | |
690 | ||
a0d0e21e LW |
691 | #endif /* CRIPPLED_CC */ |
692 | ||
ffb4593c NT |
693 | /* |
694 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
695 | * with a subroutine, S_lop() for which LOP is just another name. | |
696 | */ | |
697 | ||
a0d0e21e LW |
698 | #define LOP(f,x) return lop(f,x,s) |
699 | ||
ffb4593c NT |
700 | /* |
701 | * S_lop | |
702 | * Build a list operator (or something that might be one). The rules: | |
703 | * - if we have a next token, then it's a list operator [why?] | |
704 | * - if the next thing is an opening paren, then it's a function | |
705 | * - else it's a list operator | |
706 | */ | |
707 | ||
76e3520e | 708 | STATIC I32 |
a0be28da | 709 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 710 | { |
0f15f207 | 711 | dTHR; |
79072805 | 712 | yylval.ival = f; |
35c8bce7 | 713 | CLINE; |
3280af22 NIS |
714 | PL_expect = x; |
715 | PL_bufptr = s; | |
716 | PL_last_lop = PL_oldbufptr; | |
717 | PL_last_lop_op = f; | |
718 | if (PL_nexttoke) | |
a0d0e21e | 719 | return LSTOP; |
79072805 LW |
720 | if (*s == '(') |
721 | return FUNC; | |
722 | s = skipspace(s); | |
723 | if (*s == '(') | |
724 | return FUNC; | |
725 | else | |
726 | return LSTOP; | |
727 | } | |
728 | ||
ffb4593c NT |
729 | /* |
730 | * S_force_next | |
9cbb5ea2 | 731 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 732 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
733 | * to know what token to return the next time the lexer is called. Caller |
734 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
735 | * handles the token correctly. | |
ffb4593c NT |
736 | */ |
737 | ||
76e3520e | 738 | STATIC void |
cea2e8a9 | 739 | S_force_next(pTHX_ I32 type) |
79072805 | 740 | { |
3280af22 NIS |
741 | PL_nexttype[PL_nexttoke] = type; |
742 | PL_nexttoke++; | |
743 | if (PL_lex_state != LEX_KNOWNEXT) { | |
744 | PL_lex_defer = PL_lex_state; | |
745 | PL_lex_expect = PL_expect; | |
746 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
747 | } |
748 | } | |
749 | ||
ffb4593c NT |
750 | /* |
751 | * S_force_word | |
752 | * When the lexer knows the next thing is a word (for instance, it has | |
753 | * just seen -> and it knows that the next char is a word char, then | |
754 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
755 | * | |
756 | * Arguments: | |
b1b65b59 | 757 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
758 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
759 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
760 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
761 | * int allow_pack : if true, : characters will also be allowed (require, | |
762 | * use, etc. do this) | |
9cbb5ea2 | 763 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
764 | */ |
765 | ||
76e3520e | 766 | STATIC char * |
cea2e8a9 | 767 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 768 | { |
463ee0b2 LW |
769 | register char *s; |
770 | STRLEN len; | |
771 | ||
772 | start = skipspace(start); | |
773 | s = start; | |
7e2040f0 | 774 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 775 | (allow_pack && *s == ':') || |
15f0808c | 776 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 777 | { |
3280af22 NIS |
778 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
779 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
780 | return start; |
781 | if (token == METHOD) { | |
782 | s = skipspace(s); | |
783 | if (*s == '(') | |
3280af22 | 784 | PL_expect = XTERM; |
463ee0b2 | 785 | else { |
3280af22 | 786 | PL_expect = XOPERATOR; |
463ee0b2 | 787 | } |
79072805 | 788 | } |
3280af22 NIS |
789 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
790 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
791 | force_next(token); |
792 | } | |
793 | return s; | |
794 | } | |
795 | ||
ffb4593c NT |
796 | /* |
797 | * S_force_ident | |
9cbb5ea2 | 798 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
799 | * text only contains the "foo" portion. The first argument is a pointer |
800 | * to the "foo", and the second argument is the type symbol to prefix. | |
801 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 802 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
803 | */ |
804 | ||
76e3520e | 805 | STATIC void |
cea2e8a9 | 806 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
807 | { |
808 | if (s && *s) { | |
11343788 | 809 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 810 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 811 | force_next(WORD); |
748a9306 | 812 | if (kind) { |
e858de61 | 813 | dTHR; /* just for in_eval */ |
11343788 | 814 | o->op_private = OPpCONST_ENTERED; |
55497cff | 815 | /* XXX see note in pp_entereval() for why we forgo typo |
816 | warnings if the symbol must be introduced in an eval. | |
817 | GSAR 96-10-12 */ | |
3280af22 | 818 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
819 | kind == '$' ? SVt_PV : |
820 | kind == '@' ? SVt_PVAV : | |
821 | kind == '%' ? SVt_PVHV : | |
822 | SVt_PVGV | |
823 | ); | |
748a9306 | 824 | } |
79072805 LW |
825 | } |
826 | } | |
827 | ||
1571675a GS |
828 | NV |
829 | Perl_str_to_version(pTHX_ SV *sv) | |
830 | { | |
831 | NV retval = 0.0; | |
832 | NV nshift = 1.0; | |
833 | STRLEN len; | |
834 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 835 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
836 | char *end = start + len; |
837 | while (start < end) { | |
838 | I32 skip; | |
839 | UV n; | |
840 | if (utf) | |
841 | n = utf8_to_uv((U8*)start, &skip); | |
842 | else { | |
843 | n = *(U8*)start; | |
844 | skip = 1; | |
845 | } | |
846 | retval += ((NV)n)/nshift; | |
847 | start += skip; | |
848 | nshift *= 1000; | |
849 | } | |
850 | return retval; | |
851 | } | |
852 | ||
ffb4593c NT |
853 | /* |
854 | * S_force_version | |
855 | * Forces the next token to be a version number. | |
856 | */ | |
857 | ||
76e3520e | 858 | STATIC char * |
cea2e8a9 | 859 | S_force_version(pTHX_ char *s) |
89bfa8cd | 860 | { |
861 | OP *version = Nullop; | |
44dcb63b | 862 | char *d; |
89bfa8cd | 863 | |
864 | s = skipspace(s); | |
865 | ||
44dcb63b | 866 | d = s; |
dd629d5b | 867 | if (*d == 'v') |
44dcb63b | 868 | d++; |
44dcb63b | 869 | if (isDIGIT(*d)) { |
a7cb1f99 | 870 | for (; isDIGIT(*d) || *d == '_' || *d == '.'; d++); |
9f3d182e | 871 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 872 | SV *ver; |
89bfa8cd | 873 | s = scan_num(s); |
89bfa8cd | 874 | version = yylval.opval; |
dd629d5b GS |
875 | ver = cSVOPx(version)->op_sv; |
876 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 877 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
878 | SvNVX(ver) = str_to_version(ver); |
879 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 880 | } |
89bfa8cd | 881 | } |
882 | } | |
883 | ||
884 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 885 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 886 | force_next(WORD); |
887 | ||
888 | return (s); | |
889 | } | |
890 | ||
ffb4593c NT |
891 | /* |
892 | * S_tokeq | |
893 | * Tokenize a quoted string passed in as an SV. It finds the next | |
894 | * chunk, up to end of string or a backslash. It may make a new | |
895 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
896 | * turns \\ into \. | |
897 | */ | |
898 | ||
76e3520e | 899 | STATIC SV * |
cea2e8a9 | 900 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
901 | { |
902 | register char *s; | |
903 | register char *send; | |
904 | register char *d; | |
b3ac6de7 IZ |
905 | STRLEN len = 0; |
906 | SV *pv = sv; | |
79072805 LW |
907 | |
908 | if (!SvLEN(sv)) | |
b3ac6de7 | 909 | goto finish; |
79072805 | 910 | |
a0d0e21e | 911 | s = SvPV_force(sv, len); |
21a311ee | 912 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 913 | goto finish; |
463ee0b2 | 914 | send = s + len; |
79072805 LW |
915 | while (s < send && *s != '\\') |
916 | s++; | |
917 | if (s == send) | |
b3ac6de7 | 918 | goto finish; |
79072805 | 919 | d = s; |
3280af22 | 920 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 921 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
922 | while (s < send) { |
923 | if (*s == '\\') { | |
a0d0e21e | 924 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
925 | s++; /* all that, just for this */ |
926 | } | |
927 | *d++ = *s++; | |
928 | } | |
929 | *d = '\0'; | |
463ee0b2 | 930 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 931 | finish: |
3280af22 | 932 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 933 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
934 | return sv; |
935 | } | |
936 | ||
ffb4593c NT |
937 | /* |
938 | * Now come three functions related to double-quote context, | |
939 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
940 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
941 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
942 | * to handle functions and concatenation. | |
943 | * They assume that whoever calls them will be setting up a fake | |
944 | * join call, because each subthing puts a ',' after it. This lets | |
945 | * "lower \luPpEr" | |
946 | * become | |
947 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
948 | * | |
949 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
950 | * arguments and join's arguments are created or not). | |
951 | */ | |
952 | ||
953 | /* | |
954 | * S_sublex_start | |
955 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
956 | * | |
957 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
958 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
959 | * | |
960 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
961 | * | |
962 | * Everything else becomes a FUNC. | |
963 | * | |
964 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
965 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
966 | * call to S_sublex_push(). | |
967 | */ | |
968 | ||
76e3520e | 969 | STATIC I32 |
cea2e8a9 | 970 | S_sublex_start(pTHX) |
79072805 LW |
971 | { |
972 | register I32 op_type = yylval.ival; | |
79072805 LW |
973 | |
974 | if (op_type == OP_NULL) { | |
3280af22 NIS |
975 | yylval.opval = PL_lex_op; |
976 | PL_lex_op = Nullop; | |
79072805 LW |
977 | return THING; |
978 | } | |
979 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 980 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
981 | |
982 | if (SvTYPE(sv) == SVt_PVIV) { | |
983 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
984 | STRLEN len; | |
985 | char *p; | |
986 | SV *nsv; | |
987 | ||
988 | p = SvPV(sv, len); | |
79cb57f6 | 989 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
990 | if (SvUTF8(sv)) |
991 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
992 | SvREFCNT_dec(sv); |
993 | sv = nsv; | |
994 | } | |
995 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 996 | PL_lex_stuff = Nullsv; |
79072805 LW |
997 | return THING; |
998 | } | |
999 | ||
3280af22 NIS |
1000 | PL_sublex_info.super_state = PL_lex_state; |
1001 | PL_sublex_info.sub_inwhat = op_type; | |
1002 | PL_sublex_info.sub_op = PL_lex_op; | |
1003 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1004 | |
3280af22 NIS |
1005 | PL_expect = XTERM; |
1006 | if (PL_lex_op) { | |
1007 | yylval.opval = PL_lex_op; | |
1008 | PL_lex_op = Nullop; | |
55497cff | 1009 | return PMFUNC; |
1010 | } | |
1011 | else | |
1012 | return FUNC; | |
1013 | } | |
1014 | ||
ffb4593c NT |
1015 | /* |
1016 | * S_sublex_push | |
1017 | * Create a new scope to save the lexing state. The scope will be | |
1018 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1019 | * to the uc, lc, etc. found before. | |
1020 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1021 | */ | |
1022 | ||
76e3520e | 1023 | STATIC I32 |
cea2e8a9 | 1024 | S_sublex_push(pTHX) |
55497cff | 1025 | { |
0f15f207 | 1026 | dTHR; |
f46d017c | 1027 | ENTER; |
55497cff | 1028 | |
3280af22 NIS |
1029 | PL_lex_state = PL_sublex_info.super_state; |
1030 | SAVEI32(PL_lex_dojoin); | |
1031 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1032 | SAVEI32(PL_lex_casemods); |
1033 | SAVEI32(PL_lex_starts); | |
1034 | SAVEI32(PL_lex_state); | |
7766f137 | 1035 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1036 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1037 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
1038 | SAVEPPTR(PL_bufptr); |
1039 | SAVEPPTR(PL_oldbufptr); | |
1040 | SAVEPPTR(PL_oldoldbufptr); | |
1041 | SAVEPPTR(PL_linestart); | |
1042 | SAVESPTR(PL_linestr); | |
1043 | SAVEPPTR(PL_lex_brackstack); | |
1044 | SAVEPPTR(PL_lex_casestack); | |
1045 | ||
1046 | PL_linestr = PL_lex_stuff; | |
1047 | PL_lex_stuff = Nullsv; | |
1048 | ||
9cbb5ea2 GS |
1049 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1050 | = SvPVX(PL_linestr); | |
3280af22 NIS |
1051 | PL_bufend += SvCUR(PL_linestr); |
1052 | SAVEFREESV(PL_linestr); | |
1053 | ||
1054 | PL_lex_dojoin = FALSE; | |
1055 | PL_lex_brackets = 0; | |
3280af22 NIS |
1056 | New(899, PL_lex_brackstack, 120, char); |
1057 | New(899, PL_lex_casestack, 12, char); | |
1058 | SAVEFREEPV(PL_lex_brackstack); | |
1059 | SAVEFREEPV(PL_lex_casestack); | |
1060 | PL_lex_casemods = 0; | |
1061 | *PL_lex_casestack = '\0'; | |
1062 | PL_lex_starts = 0; | |
1063 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1064 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1065 | |
1066 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1067 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1068 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1069 | else |
3280af22 | 1070 | PL_lex_inpat = Nullop; |
79072805 | 1071 | |
55497cff | 1072 | return '('; |
79072805 LW |
1073 | } |
1074 | ||
ffb4593c NT |
1075 | /* |
1076 | * S_sublex_done | |
1077 | * Restores lexer state after a S_sublex_push. | |
1078 | */ | |
1079 | ||
76e3520e | 1080 | STATIC I32 |
cea2e8a9 | 1081 | S_sublex_done(pTHX) |
79072805 | 1082 | { |
3280af22 NIS |
1083 | if (!PL_lex_starts++) { |
1084 | PL_expect = XOPERATOR; | |
79cb57f6 | 1085 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1086 | return THING; |
1087 | } | |
1088 | ||
3280af22 NIS |
1089 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1090 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1091 | return yylex(); |
79072805 LW |
1092 | } |
1093 | ||
ffb4593c | 1094 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1095 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1096 | PL_linestr = PL_lex_repl; | |
1097 | PL_lex_inpat = 0; | |
1098 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1099 | PL_bufend += SvCUR(PL_linestr); | |
1100 | SAVEFREESV(PL_linestr); | |
1101 | PL_lex_dojoin = FALSE; | |
1102 | PL_lex_brackets = 0; | |
3280af22 NIS |
1103 | PL_lex_casemods = 0; |
1104 | *PL_lex_casestack = '\0'; | |
1105 | PL_lex_starts = 0; | |
25da4f38 | 1106 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1107 | PL_lex_state = LEX_INTERPNORMAL; |
1108 | PL_lex_starts++; | |
e9fa98b2 HS |
1109 | /* we don't clear PL_lex_repl here, so that we can check later |
1110 | whether this is an evalled subst; that means we rely on the | |
1111 | logic to ensure sublex_done() is called again only via the | |
1112 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1113 | } |
e9fa98b2 | 1114 | else { |
3280af22 | 1115 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1116 | PL_lex_repl = Nullsv; |
1117 | } | |
79072805 | 1118 | return ','; |
ffed7fef LW |
1119 | } |
1120 | else { | |
f46d017c | 1121 | LEAVE; |
3280af22 NIS |
1122 | PL_bufend = SvPVX(PL_linestr); |
1123 | PL_bufend += SvCUR(PL_linestr); | |
1124 | PL_expect = XOPERATOR; | |
09bef843 | 1125 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1126 | return ')'; |
ffed7fef LW |
1127 | } |
1128 | } | |
1129 | ||
02aa26ce NT |
1130 | /* |
1131 | scan_const | |
1132 | ||
1133 | Extracts a pattern, double-quoted string, or transliteration. This | |
1134 | is terrifying code. | |
1135 | ||
3280af22 NIS |
1136 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1137 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1138 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1139 | ||
9b599b2a GS |
1140 | Returns a pointer to the character scanned up to. Iff this is |
1141 | advanced from the start pointer supplied (ie if anything was | |
1142 | successfully parsed), will leave an OP for the substring scanned | |
1143 | in yylval. Caller must intuit reason for not parsing further | |
1144 | by looking at the next characters herself. | |
1145 | ||
02aa26ce NT |
1146 | In patterns: |
1147 | backslashes: | |
1148 | double-quoted style: \r and \n | |
1149 | regexp special ones: \D \s | |
1150 | constants: \x3 | |
1151 | backrefs: \1 (deprecated in substitution replacements) | |
1152 | case and quoting: \U \Q \E | |
1153 | stops on @ and $, but not for $ as tail anchor | |
1154 | ||
1155 | In transliterations: | |
1156 | characters are VERY literal, except for - not at the start or end | |
1157 | of the string, which indicates a range. scan_const expands the | |
1158 | range to the full set of intermediate characters. | |
1159 | ||
1160 | In double-quoted strings: | |
1161 | backslashes: | |
1162 | double-quoted style: \r and \n | |
1163 | constants: \x3 | |
1164 | backrefs: \1 (deprecated) | |
1165 | case and quoting: \U \Q \E | |
1166 | stops on @ and $ | |
1167 | ||
1168 | scan_const does *not* construct ops to handle interpolated strings. | |
1169 | It stops processing as soon as it finds an embedded $ or @ variable | |
1170 | and leaves it to the caller to work out what's going on. | |
1171 | ||
1172 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1173 | ||
1174 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1175 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1176 | followed by one of ")| \n\t" | |
1177 | ||
1178 | \1 (backreferences) are turned into $1 | |
1179 | ||
1180 | The structure of the code is | |
1181 | while (there's a character to process) { | |
1182 | handle transliteration ranges | |
1183 | skip regexp comments | |
1184 | skip # initiated comments in //x patterns | |
1185 | check for embedded @foo | |
1186 | check for embedded scalars | |
1187 | if (backslash) { | |
1188 | leave intact backslashes from leave (below) | |
1189 | deprecate \1 in strings and sub replacements | |
1190 | handle string-changing backslashes \l \U \Q \E, etc. | |
1191 | switch (what was escaped) { | |
1192 | handle - in a transliteration (becomes a literal -) | |
1193 | handle \132 octal characters | |
1194 | handle 0x15 hex characters | |
1195 | handle \cV (control V) | |
1196 | handle printf backslashes (\f, \r, \n, etc) | |
1197 | } (end switch) | |
1198 | } (end if backslash) | |
1199 | } (end while character to read) | |
1200 | ||
1201 | */ | |
1202 | ||
76e3520e | 1203 | STATIC char * |
cea2e8a9 | 1204 | S_scan_const(pTHX_ char *start) |
79072805 | 1205 | { |
3280af22 | 1206 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1207 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1208 | register char *s = start; /* start of the constant */ | |
1209 | register char *d = SvPVX(sv); /* destination for copies */ | |
1210 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1211 | bool didrange = FALSE; /* did we just finish a range? */ |
7e2040f0 | 1212 | bool has_utf = FALSE; /* embedded \x{} */ |
02aa26ce | 1213 | I32 len; /* ? */ |
012bcf8d GS |
1214 | UV uv; |
1215 | ||
ac2262e3 | 1216 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1217 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1218 | : UTF; | |
ac2262e3 | 1219 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1220 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1221 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1222 | : UTF; |
dff6d3cd | 1223 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1224 | PL_lex_inpat |
4a2d328f | 1225 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1226 | : ""; |
79072805 LW |
1227 | |
1228 | while (s < send || dorange) { | |
02aa26ce | 1229 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1230 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1231 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1232 | if (dorange) { |
02aa26ce | 1233 | I32 i; /* current expanded character */ |
8ada0baa | 1234 | I32 min; /* first character in range */ |
02aa26ce NT |
1235 | I32 max; /* last character in range */ |
1236 | ||
1237 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1238 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1239 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1240 | d -= 2; /* eat the first char and the - */ |
1241 | ||
8ada0baa JH |
1242 | min = (U8)*d; /* first char in range */ |
1243 | max = (U8)d[1]; /* last char in range */ | |
1244 | ||
c2e66d9e | 1245 | if (min > max) { |
01ec43d0 GS |
1246 | Perl_croak(aTHX_ |
1247 | "Invalid [] range \"%c-%c\" in transliteration operator", | |
1248 | min, max); | |
c2e66d9e GS |
1249 | } |
1250 | ||
8ada0baa JH |
1251 | #ifndef ASCIIish |
1252 | if ((isLOWER(min) && isLOWER(max)) || | |
1253 | (isUPPER(min) && isUPPER(max))) { | |
1254 | if (isLOWER(min)) { | |
1255 | for (i = min; i <= max; i++) | |
1256 | if (isLOWER(i)) | |
1257 | *d++ = i; | |
1258 | } else { | |
1259 | for (i = min; i <= max; i++) | |
1260 | if (isUPPER(i)) | |
1261 | *d++ = i; | |
1262 | } | |
1263 | } | |
1264 | else | |
1265 | #endif | |
1266 | for (i = min; i <= max; i++) | |
1267 | *d++ = i; | |
02aa26ce NT |
1268 | |
1269 | /* mark the range as done, and continue */ | |
79072805 | 1270 | dorange = FALSE; |
01ec43d0 | 1271 | didrange = TRUE; |
79072805 | 1272 | continue; |
c2e66d9e | 1273 | } |
02aa26ce NT |
1274 | |
1275 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1276 | else if (*s == '-' && s+1 < send && s != start) { |
01ec43d0 | 1277 | if (didrange) { |
1fafa243 | 1278 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1279 | } |
a0ed51b3 | 1280 | if (utf) { |
a176fa2a | 1281 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1282 | s++; |
1283 | continue; | |
1284 | } | |
79072805 LW |
1285 | dorange = TRUE; |
1286 | s++; | |
01ec43d0 GS |
1287 | } |
1288 | else { | |
1289 | didrange = FALSE; | |
1290 | } | |
79072805 | 1291 | } |
02aa26ce NT |
1292 | |
1293 | /* if we get here, we're not doing a transliteration */ | |
1294 | ||
0f5d15d6 IZ |
1295 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1296 | except for the last char, which will be done separately. */ | |
3280af22 | 1297 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1298 | if (s[2] == '#') { |
1299 | while (s < send && *s != ')') | |
1300 | *d++ = *s++; | |
155aba94 GS |
1301 | } |
1302 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1303 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1304 | { | |
cc6b7395 | 1305 | I32 count = 1; |
0f5d15d6 | 1306 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1307 | char c; |
1308 | ||
d9f97599 GS |
1309 | while (count && (c = *regparse)) { |
1310 | if (c == '\\' && regparse[1]) | |
1311 | regparse++; | |
cc6b7395 IZ |
1312 | else if (c == '{') |
1313 | count++; | |
1314 | else if (c == '}') | |
1315 | count--; | |
d9f97599 | 1316 | regparse++; |
cc6b7395 | 1317 | } |
5bdf89e7 IZ |
1318 | if (*regparse != ')') { |
1319 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1320 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1321 | } |
0f5d15d6 | 1322 | while (s < regparse) |
cc6b7395 IZ |
1323 | *d++ = *s++; |
1324 | } | |
748a9306 | 1325 | } |
02aa26ce NT |
1326 | |
1327 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1328 | else if (*s == '#' && PL_lex_inpat && |
1329 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1330 | while (s+1 < send && *s != '\n') |
1331 | *d++ = *s++; | |
1332 | } | |
02aa26ce NT |
1333 | |
1334 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
7e2040f0 GS |
1335 | else if (*s == '@' && s[1] |
1336 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$", s[1]))) | |
79072805 | 1337 | break; |
02aa26ce NT |
1338 | |
1339 | /* check for embedded scalars. only stop if we're sure it's a | |
1340 | variable. | |
1341 | */ | |
79072805 | 1342 | else if (*s == '$') { |
3280af22 | 1343 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1344 | break; |
c277df42 | 1345 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1346 | break; /* in regexp, $ might be tail anchor */ |
1347 | } | |
02aa26ce | 1348 | |
a0ed51b3 LW |
1349 | /* (now in tr/// code again) */ |
1350 | ||
d008e5eb | 1351 | if (*s & 0x80 && thisutf) { |
012bcf8d GS |
1352 | (void)utf8_to_uv((U8*)s, &len); |
1353 | if (len == 1) { | |
1354 | /* illegal UTF8, make it valid */ | |
012bcf8d | 1355 | char *old_pvx = SvPVX(sv); |
bee7c419 GS |
1356 | /* need space for one extra char (NOTE: SvCUR() not set here) */ |
1357 | d = SvGROW(sv, SvLEN(sv) + 1) + (d - old_pvx); | |
012bcf8d GS |
1358 | d = (char*)uv_to_utf8((U8*)d, (U8)*s++); |
1359 | } | |
1360 | else { | |
1361 | while (len--) | |
1362 | *d++ = *s++; | |
1363 | } | |
1364 | has_utf = TRUE; | |
1365 | continue; | |
a0ed51b3 LW |
1366 | } |
1367 | ||
02aa26ce | 1368 | /* backslashes */ |
79072805 LW |
1369 | if (*s == '\\' && s+1 < send) { |
1370 | s++; | |
02aa26ce NT |
1371 | |
1372 | /* some backslashes we leave behind */ | |
c9f97d15 | 1373 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1374 | *d++ = '\\'; |
1375 | *d++ = *s++; | |
1376 | continue; | |
1377 | } | |
02aa26ce NT |
1378 | |
1379 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1380 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1381 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1382 | { |
d008e5eb | 1383 | dTHR; /* only for ckWARN */ |
599cee73 | 1384 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1385 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1386 | *--s = '$'; |
1387 | break; | |
1388 | } | |
02aa26ce NT |
1389 | |
1390 | /* string-change backslash escapes */ | |
3280af22 | 1391 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1392 | --s; |
1393 | break; | |
1394 | } | |
02aa26ce NT |
1395 | |
1396 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1397 | switch (*s) { |
02aa26ce NT |
1398 | |
1399 | /* quoted - in transliterations */ | |
79072805 | 1400 | case '-': |
3280af22 | 1401 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1402 | *d++ = *s++; |
1403 | continue; | |
1404 | } | |
1405 | /* FALL THROUGH */ | |
1406 | default: | |
11b8faa4 JH |
1407 | { |
1408 | dTHR; | |
7e84c16c | 1409 | if (ckWARN(WARN_MISC) && isALNUM(*s)) |
e476b1b5 | 1410 | Perl_warner(aTHX_ WARN_MISC, |
11b8faa4 JH |
1411 | "Unrecognized escape \\%c passed through", |
1412 | *s); | |
1413 | /* default action is to copy the quoted character */ | |
1414 | *d++ = *s++; | |
1415 | continue; | |
1416 | } | |
02aa26ce NT |
1417 | |
1418 | /* \132 indicates an octal constant */ | |
79072805 LW |
1419 | case '0': case '1': case '2': case '3': |
1420 | case '4': case '5': case '6': case '7': | |
b21ed0a9 | 1421 | len = 0; /* disallow underscores */ |
012bcf8d | 1422 | uv = (UV)scan_oct(s, 3, &len); |
79072805 | 1423 | s += len; |
012bcf8d | 1424 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1425 | |
1426 | /* \x24 indicates a hex constant */ | |
79072805 | 1427 | case 'x': |
a0ed51b3 LW |
1428 | ++s; |
1429 | if (*s == '{') { | |
1430 | char* e = strchr(s, '}'); | |
adaeee49 | 1431 | if (!e) { |
a0ed51b3 | 1432 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1433 | e = s; |
1434 | } | |
b21ed0a9 | 1435 | len = 1; /* allow underscores */ |
012bcf8d GS |
1436 | uv = (UV)scan_hex(s + 1, e - s - 1, &len); |
1437 | s = e + 1; | |
a0ed51b3 LW |
1438 | } |
1439 | else { | |
b21ed0a9 | 1440 | len = 0; /* disallow underscores */ |
012bcf8d GS |
1441 | uv = (UV)scan_hex(s, 2, &len); |
1442 | s += len; | |
1443 | } | |
1444 | ||
1445 | NUM_ESCAPE_INSERT: | |
1446 | /* Insert oct or hex escaped character. | |
1447 | * There will always enough room in sv since such escapes will | |
1448 | * be longer than any utf8 sequence they can end up as | |
1449 | */ | |
1450 | if (uv > 127) { | |
1451 | if (!thisutf && !has_utf && uv > 255) { | |
1452 | /* might need to recode whatever we have accumulated so far | |
1453 | * if it contains any hibit chars | |
1454 | */ | |
1455 | int hicount = 0; | |
1456 | char *c; | |
1457 | for (c = SvPVX(sv); c < d; c++) { | |
1458 | if (*c & 0x80) | |
1459 | hicount++; | |
1460 | } | |
1461 | if (hicount) { | |
1462 | char *old_pvx = SvPVX(sv); | |
1463 | char *src, *dst; | |
1464 | d = SvGROW(sv, SvCUR(sv) + hicount + 1) + (d - old_pvx); | |
1465 | ||
1466 | src = d - 1; | |
1467 | d += hicount; | |
1468 | dst = d - 1; | |
1469 | ||
1470 | while (src < dst) { | |
1471 | if (*src & 0x80) { | |
1472 | dst--; | |
1473 | uv_to_utf8((U8*)dst, (U8)*src--); | |
1474 | dst--; | |
1475 | } | |
1476 | else { | |
1477 | *dst-- = *src--; | |
1478 | } | |
1479 | } | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | if (thisutf || uv > 255) { | |
1484 | d = (char*)uv_to_utf8((U8*)d, uv); | |
7e2040f0 | 1485 | has_utf = TRUE; |
012bcf8d | 1486 | } |
a0ed51b3 | 1487 | else { |
012bcf8d | 1488 | *d++ = (char)uv; |
a0ed51b3 | 1489 | } |
012bcf8d GS |
1490 | } |
1491 | else { | |
1492 | *d++ = (char)uv; | |
a0ed51b3 | 1493 | } |
79072805 | 1494 | continue; |
02aa26ce | 1495 | |
4a2d328f IZ |
1496 | /* \N{latin small letter a} is a named character */ |
1497 | case 'N': | |
423cee85 JH |
1498 | ++s; |
1499 | if (*s == '{') { | |
1500 | char* e = strchr(s, '}'); | |
155aba94 | 1501 | SV *res; |
423cee85 JH |
1502 | STRLEN len; |
1503 | char *str; | |
423cee85 JH |
1504 | |
1505 | if (!e) { | |
5777a3f7 | 1506 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1507 | e = s - 1; |
1508 | goto cont_scan; | |
1509 | } | |
1510 | res = newSVpvn(s + 1, e - s - 1); | |
1511 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1512 | res, Nullsv, "\\N{...}" ); |
423cee85 | 1513 | str = SvPV(res,len); |
f08d6ad9 GS |
1514 | if (!has_utf && SvUTF8(res)) { |
1515 | char *ostart = SvPVX(sv); | |
1516 | SvCUR_set(sv, d - ostart); | |
1517 | SvPOK_on(sv); | |
1518 | sv_utf8_upgrade(sv); | |
1519 | d = SvPVX(sv) + SvCUR(sv); | |
e1992b6d | 1520 | has_utf = TRUE; |
f08d6ad9 | 1521 | } |
423cee85 JH |
1522 | if (len > e - s + 4) { |
1523 | char *odest = SvPVX(sv); | |
1524 | ||
1525 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1526 | d = SvPVX(sv) + (d - odest); | |
1527 | } | |
1528 | Copy(str, d, len, char); | |
1529 | d += len; | |
1530 | SvREFCNT_dec(res); | |
1531 | cont_scan: | |
1532 | s = e + 1; | |
1533 | } | |
1534 | else | |
5777a3f7 | 1535 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1536 | continue; |
1537 | ||
02aa26ce | 1538 | /* \c is a control character */ |
79072805 LW |
1539 | case 'c': |
1540 | s++; | |
9d116dd7 JH |
1541 | #ifdef EBCDIC |
1542 | *d = *s++; | |
1543 | if (isLOWER(*d)) | |
1544 | *d = toUPPER(*d); | |
774a9426 GS |
1545 | *d = toCTRL(*d); |
1546 | d++; | |
9d116dd7 | 1547 | #else |
bbce6d69 | 1548 | len = *s++; |
1549 | *d++ = toCTRL(len); | |
9d116dd7 | 1550 | #endif |
79072805 | 1551 | continue; |
02aa26ce NT |
1552 | |
1553 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1554 | case 'b': |
1555 | *d++ = '\b'; | |
1556 | break; | |
1557 | case 'n': | |
1558 | *d++ = '\n'; | |
1559 | break; | |
1560 | case 'r': | |
1561 | *d++ = '\r'; | |
1562 | break; | |
1563 | case 'f': | |
1564 | *d++ = '\f'; | |
1565 | break; | |
1566 | case 't': | |
1567 | *d++ = '\t'; | |
1568 | break; | |
34a3fe2a PP |
1569 | #ifdef EBCDIC |
1570 | case 'e': | |
1571 | *d++ = '\047'; /* CP 1047 */ | |
1572 | break; | |
1573 | case 'a': | |
1574 | *d++ = '\057'; /* CP 1047 */ | |
1575 | break; | |
1576 | #else | |
79072805 LW |
1577 | case 'e': |
1578 | *d++ = '\033'; | |
1579 | break; | |
1580 | case 'a': | |
1581 | *d++ = '\007'; | |
1582 | break; | |
34a3fe2a | 1583 | #endif |
02aa26ce NT |
1584 | } /* end switch */ |
1585 | ||
79072805 LW |
1586 | s++; |
1587 | continue; | |
02aa26ce NT |
1588 | } /* end if (backslash) */ |
1589 | ||
79072805 | 1590 | *d++ = *s++; |
02aa26ce NT |
1591 | } /* while loop to process each character */ |
1592 | ||
1593 | /* terminate the string and set up the sv */ | |
79072805 | 1594 | *d = '\0'; |
463ee0b2 | 1595 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 | 1596 | SvPOK_on(sv); |
7e2040f0 GS |
1597 | if (has_utf) |
1598 | SvUTF8_on(sv); | |
79072805 | 1599 | |
02aa26ce | 1600 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1601 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1602 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1603 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1604 | } |
02aa26ce | 1605 | |
9b599b2a | 1606 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1607 | if (s > PL_bufptr) { |
1608 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1609 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1610 | sv, Nullsv, |
3280af22 | 1611 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1612 | ? "tr" |
3280af22 | 1613 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1614 | ? "s" |
1615 | : "qq"))); | |
79072805 | 1616 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1617 | } else |
8990e307 | 1618 | SvREFCNT_dec(sv); |
79072805 LW |
1619 | return s; |
1620 | } | |
1621 | ||
ffb4593c NT |
1622 | /* S_intuit_more |
1623 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1624 | * FALSE otherwise. | |
ffb4593c NT |
1625 | * |
1626 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1627 | * | |
1628 | * ->[ and ->{ return TRUE | |
1629 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1630 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1631 | * if we're in a pattern and the first char is a { | |
1632 | * {4,5} (any digits around the comma) returns FALSE | |
1633 | * if we're in a pattern and the first char is a [ | |
1634 | * [] returns FALSE | |
1635 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1636 | * character class or not. It has to deal with things like | |
1637 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1638 | * anything else returns TRUE | |
1639 | */ | |
1640 | ||
9cbb5ea2 GS |
1641 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1642 | ||
76e3520e | 1643 | STATIC int |
cea2e8a9 | 1644 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1645 | { |
3280af22 | 1646 | if (PL_lex_brackets) |
79072805 LW |
1647 | return TRUE; |
1648 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1649 | return TRUE; | |
1650 | if (*s != '{' && *s != '[') | |
1651 | return FALSE; | |
3280af22 | 1652 | if (!PL_lex_inpat) |
79072805 LW |
1653 | return TRUE; |
1654 | ||
1655 | /* In a pattern, so maybe we have {n,m}. */ | |
1656 | if (*s == '{') { | |
1657 | s++; | |
1658 | if (!isDIGIT(*s)) | |
1659 | return TRUE; | |
1660 | while (isDIGIT(*s)) | |
1661 | s++; | |
1662 | if (*s == ',') | |
1663 | s++; | |
1664 | while (isDIGIT(*s)) | |
1665 | s++; | |
1666 | if (*s == '}') | |
1667 | return FALSE; | |
1668 | return TRUE; | |
1669 | ||
1670 | } | |
1671 | ||
1672 | /* On the other hand, maybe we have a character class */ | |
1673 | ||
1674 | s++; | |
1675 | if (*s == ']' || *s == '^') | |
1676 | return FALSE; | |
1677 | else { | |
ffb4593c | 1678 | /* this is terrifying, and it works */ |
79072805 LW |
1679 | int weight = 2; /* let's weigh the evidence */ |
1680 | char seen[256]; | |
f27ffc4a | 1681 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1682 | char *send = strchr(s,']'); |
3280af22 | 1683 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1684 | |
1685 | if (!send) /* has to be an expression */ | |
1686 | return TRUE; | |
1687 | ||
1688 | Zero(seen,256,char); | |
1689 | if (*s == '$') | |
1690 | weight -= 3; | |
1691 | else if (isDIGIT(*s)) { | |
1692 | if (s[1] != ']') { | |
1693 | if (isDIGIT(s[1]) && s[2] == ']') | |
1694 | weight -= 10; | |
1695 | } | |
1696 | else | |
1697 | weight -= 100; | |
1698 | } | |
1699 | for (; s < send; s++) { | |
1700 | last_un_char = un_char; | |
1701 | un_char = (unsigned char)*s; | |
1702 | switch (*s) { | |
1703 | case '@': | |
1704 | case '&': | |
1705 | case '$': | |
1706 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1707 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1708 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1709 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1710 | weight -= 100; |
1711 | else | |
1712 | weight -= 10; | |
1713 | } | |
1714 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1715 | strchr("[#!%*<>()-=",s[1])) { |
1716 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1717 | weight -= 10; |
1718 | else | |
1719 | weight -= 1; | |
1720 | } | |
1721 | break; | |
1722 | case '\\': | |
1723 | un_char = 254; | |
1724 | if (s[1]) { | |
93a17b20 | 1725 | if (strchr("wds]",s[1])) |
79072805 LW |
1726 | weight += 100; |
1727 | else if (seen['\''] || seen['"']) | |
1728 | weight += 1; | |
93a17b20 | 1729 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1730 | weight += 40; |
1731 | else if (isDIGIT(s[1])) { | |
1732 | weight += 40; | |
1733 | while (s[1] && isDIGIT(s[1])) | |
1734 | s++; | |
1735 | } | |
1736 | } | |
1737 | else | |
1738 | weight += 100; | |
1739 | break; | |
1740 | case '-': | |
1741 | if (s[1] == '\\') | |
1742 | weight += 50; | |
93a17b20 | 1743 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1744 | weight += 30; |
93a17b20 | 1745 | if (strchr("zZ79~",s[1])) |
79072805 | 1746 | weight += 30; |
f27ffc4a GS |
1747 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1748 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1749 | break; |
1750 | default: | |
93a17b20 | 1751 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1752 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1753 | char *d = tmpbuf; | |
1754 | while (isALPHA(*s)) | |
1755 | *d++ = *s++; | |
1756 | *d = '\0'; | |
1757 | if (keyword(tmpbuf, d - tmpbuf)) | |
1758 | weight -= 150; | |
1759 | } | |
1760 | if (un_char == last_un_char + 1) | |
1761 | weight += 5; | |
1762 | weight -= seen[un_char]; | |
1763 | break; | |
1764 | } | |
1765 | seen[un_char]++; | |
1766 | } | |
1767 | if (weight >= 0) /* probably a character class */ | |
1768 | return FALSE; | |
1769 | } | |
1770 | ||
1771 | return TRUE; | |
1772 | } | |
ffed7fef | 1773 | |
ffb4593c NT |
1774 | /* |
1775 | * S_intuit_method | |
1776 | * | |
1777 | * Does all the checking to disambiguate | |
1778 | * foo bar | |
1779 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1780 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1781 | * | |
1782 | * First argument is the stuff after the first token, e.g. "bar". | |
1783 | * | |
1784 | * Not a method if bar is a filehandle. | |
1785 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1786 | * Not a method if it's really "Foo $bar" | |
1787 | * Method if it's "foo $bar" | |
1788 | * Not a method if it's really "print foo $bar" | |
1789 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1790 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1791 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1792 | * => |
1793 | */ | |
1794 | ||
76e3520e | 1795 | STATIC int |
cea2e8a9 | 1796 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1797 | { |
1798 | char *s = start + (*start == '$'); | |
3280af22 | 1799 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1800 | STRLEN len; |
1801 | GV* indirgv; | |
1802 | ||
1803 | if (gv) { | |
b6c543e3 | 1804 | CV *cv; |
a0d0e21e LW |
1805 | if (GvIO(gv)) |
1806 | return 0; | |
b6c543e3 IZ |
1807 | if ((cv = GvCVu(gv))) { |
1808 | char *proto = SvPVX(cv); | |
1809 | if (proto) { | |
1810 | if (*proto == ';') | |
1811 | proto++; | |
1812 | if (*proto == '*') | |
1813 | return 0; | |
1814 | } | |
1815 | } else | |
a0d0e21e LW |
1816 | gv = 0; |
1817 | } | |
8903cb82 | 1818 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1819 | /* start is the beginning of the possible filehandle/object, |
1820 | * and s is the end of it | |
1821 | * tmpbuf is a copy of it | |
1822 | */ | |
1823 | ||
a0d0e21e | 1824 | if (*start == '$') { |
3280af22 | 1825 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1826 | return 0; |
1827 | s = skipspace(s); | |
3280af22 NIS |
1828 | PL_bufptr = start; |
1829 | PL_expect = XREF; | |
a0d0e21e LW |
1830 | return *s == '(' ? FUNCMETH : METHOD; |
1831 | } | |
1832 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1833 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1834 | len -= 2; | |
1835 | tmpbuf[len] = '\0'; | |
1836 | goto bare_package; | |
1837 | } | |
1838 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1839 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1840 | return 0; |
1841 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1842 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1843 | s = skipspace(s); |
3280af22 | 1844 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1845 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1846 | bare_package: |
3280af22 | 1847 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1848 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1849 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1850 | PL_expect = XTERM; | |
a0d0e21e | 1851 | force_next(WORD); |
3280af22 | 1852 | PL_bufptr = s; |
a0d0e21e LW |
1853 | return *s == '(' ? FUNCMETH : METHOD; |
1854 | } | |
1855 | } | |
1856 | return 0; | |
1857 | } | |
1858 | ||
ffb4593c NT |
1859 | /* |
1860 | * S_incl_perldb | |
1861 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1862 | * is set, it will return the contents of that, otherwise a | |
1863 | * compile-time require of perl5db.pl. | |
1864 | */ | |
1865 | ||
76e3520e | 1866 | STATIC char* |
cea2e8a9 | 1867 | S_incl_perldb(pTHX) |
a0d0e21e | 1868 | { |
3280af22 | 1869 | if (PL_perldb) { |
76e3520e | 1870 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1871 | |
1872 | if (pdb) | |
1873 | return pdb; | |
61bb5906 | 1874 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1875 | return "BEGIN { require 'perl5db.pl' }"; |
1876 | } | |
1877 | return ""; | |
1878 | } | |
1879 | ||
1880 | ||
16d20bd9 AD |
1881 | /* Encoded script support. filter_add() effectively inserts a |
1882 | * 'pre-processing' function into the current source input stream. | |
1883 | * Note that the filter function only applies to the current source file | |
1884 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1885 | * | |
1886 | * The datasv parameter (which may be NULL) can be used to pass | |
1887 | * private data to this instance of the filter. The filter function | |
1888 | * can recover the SV using the FILTER_DATA macro and use it to | |
1889 | * store private buffers and state information. | |
1890 | * | |
1891 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 1892 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 1893 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
1894 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1895 | * private use must be set using malloc'd pointers. | |
1896 | */ | |
16d20bd9 AD |
1897 | |
1898 | SV * | |
864dbfa3 | 1899 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1900 | { |
f4c556ac GS |
1901 | if (!funcp) |
1902 | return Nullsv; | |
1903 | ||
3280af22 NIS |
1904 | if (!PL_rsfp_filters) |
1905 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1906 | if (!datasv) |
8c52afec | 1907 | datasv = NEWSV(255,0); |
16d20bd9 | 1908 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1909 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 1910 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 1911 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1912 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1913 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1914 | av_unshift(PL_rsfp_filters, 1); |
1915 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1916 | return(datasv); |
1917 | } | |
1918 | ||
1919 | ||
1920 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1921 | void |
864dbfa3 | 1922 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1923 | { |
e0c19803 | 1924 | SV *datasv; |
f4c556ac | 1925 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1926 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1927 | return; |
1928 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 1929 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 1930 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 1931 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 1932 | IoANY(datasv) = (void *)NULL; |
3280af22 | 1933 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1934 | |
16d20bd9 AD |
1935 | return; |
1936 | } | |
1937 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1938 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1939 | } |
1940 | ||
1941 | ||
1942 | /* Invoke the n'th filter function for the current rsfp. */ | |
1943 | I32 | |
864dbfa3 | 1944 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1945 | |
1946 | ||
1947 | /* 0 = read one text line */ | |
a0d0e21e | 1948 | { |
16d20bd9 AD |
1949 | filter_t funcp; |
1950 | SV *datasv = NULL; | |
e50aee73 | 1951 | |
3280af22 | 1952 | if (!PL_rsfp_filters) |
16d20bd9 | 1953 | return -1; |
3280af22 | 1954 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1955 | /* Provide a default input filter to make life easy. */ |
1956 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1957 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1958 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1959 | if (maxlen) { |
1960 | /* Want a block */ | |
1961 | int len ; | |
1962 | int old_len = SvCUR(buf_sv) ; | |
1963 | ||
1964 | /* ensure buf_sv is large enough */ | |
1965 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1966 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1967 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1968 | return -1; /* error */ |
1969 | else | |
1970 | return 0 ; /* end of file */ | |
1971 | } | |
16d20bd9 AD |
1972 | SvCUR_set(buf_sv, old_len + len) ; |
1973 | } else { | |
1974 | /* Want a line */ | |
3280af22 NIS |
1975 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1976 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1977 | return -1; /* error */ |
1978 | else | |
1979 | return 0 ; /* end of file */ | |
1980 | } | |
16d20bd9 AD |
1981 | } |
1982 | return SvCUR(buf_sv); | |
1983 | } | |
1984 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1985 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1986 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1987 | "filter_read %d: skipped (filter deleted)\n", | |
1988 | idx)); | |
16d20bd9 AD |
1989 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1990 | } | |
1991 | /* Get function pointer hidden within datasv */ | |
4755096e | 1992 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
1993 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1994 | "filter_read %d: via function %p (%s)\n", | |
1995 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1996 | /* Call function. The function is expected to */ |
1997 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1998 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1999 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2000 | } |
2001 | ||
76e3520e | 2002 | STATIC char * |
cea2e8a9 | 2003 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2004 | { |
c39cd008 | 2005 | #ifdef PERL_CR_FILTER |
3280af22 | 2006 | if (!PL_rsfp_filters) { |
c39cd008 | 2007 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2008 | } |
2009 | #endif | |
3280af22 | 2010 | if (PL_rsfp_filters) { |
16d20bd9 | 2011 | |
55497cff | 2012 | if (!append) |
2013 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2014 | if (FILTER_READ(0, sv, 0) > 0) |
2015 | return ( SvPVX(sv) ) ; | |
2016 | else | |
2017 | return Nullch ; | |
2018 | } | |
9d116dd7 | 2019 | else |
fd049845 | 2020 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2021 | } |
2022 | ||
01ec43d0 GS |
2023 | STATIC HV * |
2024 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2025 | { |
2026 | GV *gv; | |
2027 | ||
01ec43d0 | 2028 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2029 | return PL_curstash; |
2030 | ||
2031 | if (len > 2 && | |
2032 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2033 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2034 | { | |
2035 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2036 | } |
2037 | ||
2038 | /* use constant CLASS => 'MyClass' */ | |
2039 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2040 | SV *sv; | |
2041 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2042 | pkgname = SvPV_nolen(sv); | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | return gv_stashpv(pkgname, FALSE); | |
2047 | } | |
a0d0e21e | 2048 | |
748a9306 LW |
2049 | #ifdef DEBUGGING |
2050 | static char* exp_name[] = | |
09bef843 SB |
2051 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
2052 | "ATTRTERM", "TERMBLOCK" | |
2053 | }; | |
748a9306 | 2054 | #endif |
463ee0b2 | 2055 | |
02aa26ce NT |
2056 | /* |
2057 | yylex | |
2058 | ||
2059 | Works out what to call the token just pulled out of the input | |
2060 | stream. The yacc parser takes care of taking the ops we return and | |
2061 | stitching them into a tree. | |
2062 | ||
2063 | Returns: | |
2064 | PRIVATEREF | |
2065 | ||
2066 | Structure: | |
2067 | if read an identifier | |
2068 | if we're in a my declaration | |
2069 | croak if they tried to say my($foo::bar) | |
2070 | build the ops for a my() declaration | |
2071 | if it's an access to a my() variable | |
2072 | are we in a sort block? | |
2073 | croak if my($a); $a <=> $b | |
2074 | build ops for access to a my() variable | |
2075 | if in a dq string, and they've said @foo and we can't find @foo | |
2076 | croak | |
2077 | build ops for a bareword | |
2078 | if we already built the token before, use it. | |
2079 | */ | |
2080 | ||
bf4acbe4 GS |
2081 | #ifdef __SC__ |
2082 | #pragma segment Perl_yylex | |
2083 | #endif | |
864dbfa3 GS |
2084 | int |
2085 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 2086 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 2087 | #else |
cea2e8a9 | 2088 | Perl_yylex(pTHX) |
864dbfa3 | 2089 | #endif |
378cc40b | 2090 | { |
11343788 | 2091 | dTHR; |
79072805 | 2092 | register char *s; |
378cc40b | 2093 | register char *d; |
79072805 | 2094 | register I32 tmp; |
463ee0b2 | 2095 | STRLEN len; |
161b471a NIS |
2096 | GV *gv = Nullgv; |
2097 | GV **gvp = 0; | |
a687059c | 2098 | |
a1a0e61e TD |
2099 | #ifdef USE_PURE_BISON |
2100 | yylval_pointer = lvalp; | |
2101 | yychar_pointer = lcharp; | |
2102 | #endif | |
2103 | ||
02aa26ce | 2104 | /* check if there's an identifier for us to look at */ |
3280af22 | 2105 | if (PL_pending_ident) { |
02aa26ce | 2106 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
2107 | char pit = PL_pending_ident; |
2108 | PL_pending_ident = 0; | |
bbce6d69 | 2109 | |
02aa26ce NT |
2110 | /* if we're in a my(), we can't allow dynamics here. |
2111 | $foo'bar has already been turned into $foo::bar, so | |
2112 | just check for colons. | |
2113 | ||
2114 | if it's a legal name, the OP is a PADANY. | |
2115 | */ | |
3280af22 | 2116 | if (PL_in_my) { |
77ca0c92 | 2117 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
2118 | if (strchr(PL_tokenbuf,':')) |
2119 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
2120 | "variable %s in \"our\"", | |
2121 | PL_tokenbuf)); | |
77ca0c92 LW |
2122 | tmp = pad_allocmy(PL_tokenbuf); |
2123 | } | |
2124 | else { | |
2125 | if (strchr(PL_tokenbuf,':')) | |
2126 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 2127 | |
77ca0c92 LW |
2128 | yylval.opval = newOP(OP_PADANY, 0); |
2129 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
2130 | return PRIVATEREF; | |
2131 | } | |
bbce6d69 | 2132 | } |
2133 | ||
02aa26ce NT |
2134 | /* |
2135 | build the ops for accesses to a my() variable. | |
2136 | ||
2137 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
2138 | then used in a comparison. This catches most, but not | |
2139 | all cases. For instance, it catches | |
2140 | sort { my($a); $a <=> $b } | |
2141 | but not | |
2142 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2143 | (although why you'd do that is anyone's guess). | |
2144 | */ | |
2145 | ||
3280af22 | 2146 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2147 | #ifdef USE_THREADS |
54b9620d | 2148 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2149 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2150 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2151 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2152 | { |
2faa37cc | 2153 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2154 | yylval.opval->op_targ = tmp; |
2155 | return PRIVATEREF; | |
2156 | } | |
2157 | #endif /* USE_THREADS */ | |
3280af22 | 2158 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2159 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2160 | /* might be an "our" variable" */ |
f472eb5c | 2161 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2162 | /* build ops for a bareword */ |
f472eb5c GS |
2163 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2164 | sv_catpvn(sym, "::", 2); | |
2165 | sv_catpv(sym, PL_tokenbuf+1); | |
2166 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2167 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2168 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2169 | (PL_in_eval |
f472eb5c GS |
2170 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2171 | : TRUE | |
77ca0c92 LW |
2172 | ), |
2173 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2174 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2175 | : SVt_PVHV)); | |
2176 | return WORD; | |
2177 | } | |
2178 | ||
02aa26ce | 2179 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2180 | if (PL_last_lop_op == OP_SORT && |
2181 | PL_tokenbuf[0] == '$' && | |
2182 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2183 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2184 | { |
3280af22 NIS |
2185 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2186 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2187 | d++) |
2188 | { | |
2189 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2190 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2191 | PL_tokenbuf); |
a863c7d1 | 2192 | } |
bbce6d69 | 2193 | } |
2194 | } | |
bbce6d69 | 2195 | |
a863c7d1 MB |
2196 | yylval.opval = newOP(OP_PADANY, 0); |
2197 | yylval.opval->op_targ = tmp; | |
2198 | return PRIVATEREF; | |
2199 | } | |
bbce6d69 | 2200 | } |
2201 | ||
02aa26ce NT |
2202 | /* |
2203 | Whine if they've said @foo in a doublequoted string, | |
2204 | and @foo isn't a variable we can find in the symbol | |
2205 | table. | |
2206 | */ | |
3280af22 NIS |
2207 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2208 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
8593bda5 GS |
2209 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
2210 | && ckWARN(WARN_AMBIGUOUS)) | |
2211 | { | |
2212 | /* Downgraded from fatal to warning 20000522 mjd */ | |
2213 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
2214 | "Possible unintended interpolation of %s in string", | |
2215 | PL_tokenbuf); | |
2216 | } | |
bbce6d69 | 2217 | } |
2218 | ||
02aa26ce | 2219 | /* build ops for a bareword */ |
3280af22 | 2220 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2221 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2222 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2223 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2224 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2225 | : SVt_PVHV)); |
2226 | return WORD; | |
2227 | } | |
2228 | ||
02aa26ce NT |
2229 | /* no identifier pending identification */ |
2230 | ||
3280af22 | 2231 | switch (PL_lex_state) { |
79072805 LW |
2232 | #ifdef COMMENTARY |
2233 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2234 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2235 | break; | |
2236 | #endif | |
2237 | ||
09bef843 | 2238 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2239 | case LEX_KNOWNEXT: |
3280af22 NIS |
2240 | PL_nexttoke--; |
2241 | yylval = PL_nextval[PL_nexttoke]; | |
2242 | if (!PL_nexttoke) { | |
2243 | PL_lex_state = PL_lex_defer; | |
2244 | PL_expect = PL_lex_expect; | |
2245 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2246 | } |
3280af22 | 2247 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2248 | |
02aa26ce | 2249 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2250 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2251 | */ |
79072805 LW |
2252 | case LEX_INTERPCASEMOD: |
2253 | #ifdef DEBUGGING | |
3280af22 | 2254 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2255 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2256 | #endif |
02aa26ce | 2257 | /* handle \E or end of string */ |
3280af22 | 2258 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2259 | char oldmod; |
02aa26ce NT |
2260 | |
2261 | /* if at a \E */ | |
3280af22 NIS |
2262 | if (PL_lex_casemods) { |
2263 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2264 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2265 | |
3280af22 NIS |
2266 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2267 | PL_bufptr += 2; | |
2268 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2269 | } |
79072805 LW |
2270 | return ')'; |
2271 | } | |
3280af22 NIS |
2272 | if (PL_bufptr != PL_bufend) |
2273 | PL_bufptr += 2; | |
2274 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2275 | return yylex(); |
79072805 LW |
2276 | } |
2277 | else { | |
3280af22 | 2278 | s = PL_bufptr + 1; |
79072805 LW |
2279 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2280 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2281 | if (strchr("LU", *s) && |
3280af22 | 2282 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2283 | { |
3280af22 | 2284 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2285 | return ')'; |
2286 | } | |
3280af22 NIS |
2287 | if (PL_lex_casemods > 10) { |
2288 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2289 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2290 | SAVEFREEPV(newlb); |
3280af22 | 2291 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2292 | } |
2293 | } | |
3280af22 NIS |
2294 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2295 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2296 | PL_lex_state = LEX_INTERPCONCAT; | |
2297 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2298 | force_next('('); |
2299 | if (*s == 'l') | |
3280af22 | 2300 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2301 | else if (*s == 'u') |
3280af22 | 2302 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2303 | else if (*s == 'L') |
3280af22 | 2304 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2305 | else if (*s == 'U') |
3280af22 | 2306 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2307 | else if (*s == 'Q') |
3280af22 | 2308 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2309 | else |
cea2e8a9 | 2310 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2311 | PL_bufptr = s + 1; |
79072805 | 2312 | force_next(FUNC); |
3280af22 NIS |
2313 | if (PL_lex_starts) { |
2314 | s = PL_bufptr; | |
2315 | PL_lex_starts = 0; | |
79072805 LW |
2316 | Aop(OP_CONCAT); |
2317 | } | |
2318 | else | |
cea2e8a9 | 2319 | return yylex(); |
79072805 LW |
2320 | } |
2321 | ||
55497cff | 2322 | case LEX_INTERPPUSH: |
2323 | return sublex_push(); | |
2324 | ||
79072805 | 2325 | case LEX_INTERPSTART: |
3280af22 | 2326 | if (PL_bufptr == PL_bufend) |
79072805 | 2327 | return sublex_done(); |
3280af22 NIS |
2328 | PL_expect = XTERM; |
2329 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2330 | PL_lex_state = LEX_INTERPNORMAL; | |
2331 | if (PL_lex_dojoin) { | |
2332 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2333 | force_next(','); |
554b3eca | 2334 | #ifdef USE_THREADS |
533c011a NIS |
2335 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2336 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2337 | force_next(PRIVATEREF); |
2338 | #else | |
a0d0e21e | 2339 | force_ident("\"", '$'); |
554b3eca | 2340 | #endif /* USE_THREADS */ |
3280af22 | 2341 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2342 | force_next('$'); |
3280af22 | 2343 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2344 | force_next('('); |
3280af22 | 2345 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2346 | force_next(FUNC); |
2347 | } | |
3280af22 NIS |
2348 | if (PL_lex_starts++) { |
2349 | s = PL_bufptr; | |
79072805 LW |
2350 | Aop(OP_CONCAT); |
2351 | } | |
cea2e8a9 | 2352 | return yylex(); |
79072805 LW |
2353 | |
2354 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2355 | if (intuit_more(PL_bufptr)) { |
2356 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2357 | break; |
2358 | } | |
2359 | /* FALL THROUGH */ | |
2360 | ||
2361 | case LEX_INTERPEND: | |
3280af22 NIS |
2362 | if (PL_lex_dojoin) { |
2363 | PL_lex_dojoin = FALSE; | |
2364 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2365 | return ')'; |
2366 | } | |
43a16006 | 2367 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2368 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2369 | { |
e9fa98b2 | 2370 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2371 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2372 | PL_lex_repl = Nullsv; |
2373 | } | |
79072805 LW |
2374 | /* FALLTHROUGH */ |
2375 | case LEX_INTERPCONCAT: | |
2376 | #ifdef DEBUGGING | |
3280af22 | 2377 | if (PL_lex_brackets) |
cea2e8a9 | 2378 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2379 | #endif |
3280af22 | 2380 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2381 | return sublex_done(); |
2382 | ||
3280af22 NIS |
2383 | if (SvIVX(PL_linestr) == '\'') { |
2384 | SV *sv = newSVsv(PL_linestr); | |
2385 | if (!PL_lex_inpat) | |
76e3520e | 2386 | sv = tokeq(sv); |
3280af22 | 2387 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2388 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2389 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2390 | s = PL_bufend; |
79072805 LW |
2391 | } |
2392 | else { | |
3280af22 | 2393 | s = scan_const(PL_bufptr); |
79072805 | 2394 | if (*s == '\\') |
3280af22 | 2395 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2396 | else |
3280af22 | 2397 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2398 | } |
2399 | ||
3280af22 NIS |
2400 | if (s != PL_bufptr) { |
2401 | PL_nextval[PL_nexttoke] = yylval; | |
2402 | PL_expect = XTERM; | |
79072805 | 2403 | force_next(THING); |
3280af22 | 2404 | if (PL_lex_starts++) |
79072805 LW |
2405 | Aop(OP_CONCAT); |
2406 | else { | |
3280af22 | 2407 | PL_bufptr = s; |
cea2e8a9 | 2408 | return yylex(); |
79072805 LW |
2409 | } |
2410 | } | |
2411 | ||
cea2e8a9 | 2412 | return yylex(); |
a0d0e21e | 2413 | case LEX_FORMLINE: |
3280af22 NIS |
2414 | PL_lex_state = LEX_NORMAL; |
2415 | s = scan_formline(PL_bufptr); | |
2416 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2417 | goto rightbracket; |
2418 | OPERATOR(';'); | |
79072805 LW |
2419 | } |
2420 | ||
3280af22 NIS |
2421 | s = PL_bufptr; |
2422 | PL_oldoldbufptr = PL_oldbufptr; | |
2423 | PL_oldbufptr = s; | |
79072805 | 2424 | DEBUG_p( { |
bf49b057 GS |
2425 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2426 | exp_name[PL_expect], s); | |
79072805 | 2427 | } ) |
463ee0b2 LW |
2428 | |
2429 | retry: | |
378cc40b LW |
2430 | switch (*s) { |
2431 | default: | |
7e2040f0 | 2432 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2433 | goto keylookup; |
cea2e8a9 | 2434 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2435 | case 4: |
2436 | case 26: | |
2437 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2438 | case 0: |
3280af22 NIS |
2439 | if (!PL_rsfp) { |
2440 | PL_last_uni = 0; | |
2441 | PL_last_lop = 0; | |
2442 | if (PL_lex_brackets) | |
d98d5fff | 2443 | yyerror("Missing right curly or square bracket"); |
79072805 | 2444 | TOKEN(0); |
463ee0b2 | 2445 | } |
3280af22 | 2446 | if (s++ < PL_bufend) |
a687059c | 2447 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2448 | PL_last_uni = 0; |
2449 | PL_last_lop = 0; | |
2450 | if (!PL_in_eval && !PL_preambled) { | |
2451 | PL_preambled = TRUE; | |
2452 | sv_setpv(PL_linestr,incl_perldb()); | |
2453 | if (SvCUR(PL_linestr)) | |
2454 | sv_catpv(PL_linestr,";"); | |
2455 | if (PL_preambleav){ | |
2456 | while(AvFILLp(PL_preambleav) >= 0) { | |
2457 | SV *tmpsv = av_shift(PL_preambleav); | |
2458 | sv_catsv(PL_linestr, tmpsv); | |
2459 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2460 | sv_free(tmpsv); |
2461 | } | |
3280af22 NIS |
2462 | sv_free((SV*)PL_preambleav); |
2463 | PL_preambleav = NULL; | |
91b7def8 | 2464 | } |
3280af22 NIS |
2465 | if (PL_minus_n || PL_minus_p) { |
2466 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2467 | if (PL_minus_l) | |
2468 | sv_catpv(PL_linestr,"chomp;"); | |
2469 | if (PL_minus_a) { | |
8fd239a7 CS |
2470 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2471 | if (gv) | |
2472 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2473 | if (PL_minus_F) { |
2474 | if (strchr("/'\"", *PL_splitstr) | |
2475 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2476 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2477 | else { |
2478 | char delim; | |
2479 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2480 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2481 | delim = *s; |
cea2e8a9 | 2482 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2483 | "q" + (delim == '\''), delim); |
3280af22 | 2484 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2485 | if (*s == '\\') |
3280af22 NIS |
2486 | sv_catpvn(PL_linestr, "\\", 1); |
2487 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2488 | } |
cea2e8a9 | 2489 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2490 | } |
2304df62 AD |
2491 | } |
2492 | else | |
3280af22 | 2493 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2494 | } |
79072805 | 2495 | } |
3280af22 NIS |
2496 | sv_catpv(PL_linestr, "\n"); |
2497 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2498 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2499 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2500 | SV *sv = NEWSV(85,0); |
2501 | ||
2502 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2503 | sv_setsv(sv,PL_linestr); |
57843af0 | 2504 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2505 | } |
79072805 | 2506 | goto retry; |
a687059c | 2507 | } |
e929a76b | 2508 | do { |
01ec43d0 GS |
2509 | bool bof; |
2510 | bof = PL_rsfp && (PerlIO_tell(PL_rsfp) == 0); /* *Before* read! */ | |
3280af22 | 2511 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2512 | fake_eof: |
3280af22 NIS |
2513 | if (PL_rsfp) { |
2514 | if (PL_preprocess && !PL_in_eval) | |
2515 | (void)PerlProc_pclose(PL_rsfp); | |
2516 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2517 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2518 | else |
3280af22 NIS |
2519 | (void)PerlIO_close(PL_rsfp); |
2520 | PL_rsfp = Nullfp; | |
4a9ae47a | 2521 | PL_doextract = FALSE; |
395c3793 | 2522 | } |
3280af22 NIS |
2523 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2524 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2525 | sv_catpv(PL_linestr,";}"); | |
2526 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2527 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2528 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2529 | goto retry; |
2530 | } | |
3280af22 NIS |
2531 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2532 | sv_setpv(PL_linestr,""); | |
79072805 | 2533 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2534 | } |
3280af22 | 2535 | if (PL_doextract) { |
a0d0e21e | 2536 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2537 | PL_doextract = FALSE; |
a0d0e21e LW |
2538 | |
2539 | /* Incest with pod. */ | |
2540 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2541 | sv_setpv(PL_linestr, ""); |
2542 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2543 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2544 | PL_doextract = FALSE; | |
a0d0e21e | 2545 | } |
b250498f | 2546 | } |
01ec43d0 GS |
2547 | if (bof) |
2548 | s = swallow_bom(s); | |
463ee0b2 | 2549 | incline(s); |
3280af22 NIS |
2550 | } while (PL_doextract); |
2551 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2552 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2553 | SV *sv = NEWSV(85,0); |
a687059c | 2554 | |
93a17b20 | 2555 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2556 | sv_setsv(sv,PL_linestr); |
57843af0 | 2557 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2558 | } |
3280af22 | 2559 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2560 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2561 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2562 | s++; |
a0d0e21e | 2563 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2564 | s++; |
44a8e56a | 2565 | d = Nullch; |
3280af22 | 2566 | if (!PL_in_eval) { |
44a8e56a | 2567 | if (*s == '#' && *(s+1) == '!') |
2568 | d = s + 2; | |
2569 | #ifdef ALTERNATE_SHEBANG | |
2570 | else { | |
2571 | static char as[] = ALTERNATE_SHEBANG; | |
2572 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2573 | d = s + (sizeof(as) - 1); | |
2574 | } | |
2575 | #endif /* ALTERNATE_SHEBANG */ | |
2576 | } | |
2577 | if (d) { | |
b8378b72 | 2578 | char *ipath; |
774d564b | 2579 | char *ipathend; |
b8378b72 | 2580 | |
774d564b | 2581 | while (isSPACE(*d)) |
b8378b72 CS |
2582 | d++; |
2583 | ipath = d; | |
774d564b | 2584 | while (*d && !isSPACE(*d)) |
2585 | d++; | |
2586 | ipathend = d; | |
2587 | ||
2588 | #ifdef ARG_ZERO_IS_SCRIPT | |
2589 | if (ipathend > ipath) { | |
2590 | /* | |
2591 | * HP-UX (at least) sets argv[0] to the script name, | |
2592 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2593 | * at least, set argv[0] to the basename of the Perl | |
2594 | * interpreter. So, having found "#!", we'll set it right. | |
2595 | */ | |
2596 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2597 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2598 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2599 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2600 | SvSETMAGIC(x); |
2601 | } | |
774d564b | 2602 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2603 | } |
774d564b | 2604 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2605 | |
2606 | /* | |
2607 | * Look for options. | |
2608 | */ | |
748a9306 | 2609 | d = instr(s,"perl -"); |
84e30d1a | 2610 | if (!d) { |
748a9306 | 2611 | d = instr(s,"perl"); |
84e30d1a GS |
2612 | #if defined(DOSISH) |
2613 | /* avoid getting into infinite loops when shebang | |
2614 | * line contains "Perl" rather than "perl" */ | |
2615 | if (!d) { | |
2616 | for (d = ipathend-4; d >= ipath; --d) { | |
2617 | if ((*d == 'p' || *d == 'P') | |
2618 | && !ibcmp(d, "perl", 4)) | |
2619 | { | |
2620 | break; | |
2621 | } | |
2622 | } | |
2623 | if (d < ipath) | |
2624 | d = Nullch; | |
2625 | } | |
2626 | #endif | |
2627 | } | |
44a8e56a | 2628 | #ifdef ALTERNATE_SHEBANG |
2629 | /* | |
2630 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2631 | * character that can be part of a Perl expression, then if | |
2632 | * we see it but not "perl", we're probably looking at the | |
2633 | * start of Perl code, not a request to hand off to some | |
2634 | * other interpreter. Similarly, if "perl" is there, but | |
2635 | * not in the first 'word' of the line, we assume the line | |
2636 | * contains the start of the Perl program. | |
44a8e56a | 2637 | */ |
2638 | if (d && *s != '#') { | |
774d564b | 2639 | char *c = ipath; |
44a8e56a | 2640 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2641 | c++; | |
2642 | if (c < d) | |
2643 | d = Nullch; /* "perl" not in first word; ignore */ | |
2644 | else | |
2645 | *s = '#'; /* Don't try to parse shebang line */ | |
2646 | } | |
774d564b | 2647 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2648 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2649 | if (!d && |
44a8e56a | 2650 | *s == '#' && |
774d564b | 2651 | ipathend > ipath && |
3280af22 | 2652 | !PL_minus_c && |
748a9306 | 2653 | !instr(s,"indir") && |
3280af22 | 2654 | instr(PL_origargv[0],"perl")) |
748a9306 | 2655 | { |
9f68db38 | 2656 | char **newargv; |
9f68db38 | 2657 | |
774d564b | 2658 | *ipathend = '\0'; |
2659 | s = ipathend + 1; | |
3280af22 | 2660 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2661 | s++; |
3280af22 NIS |
2662 | if (s < PL_bufend) { |
2663 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2664 | newargv[1] = s; |
3280af22 | 2665 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2666 | s++; |
2667 | *s = '\0'; | |
3280af22 | 2668 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2669 | } |
2670 | else | |
3280af22 | 2671 | newargv = PL_origargv; |
774d564b | 2672 | newargv[0] = ipath; |
80252599 | 2673 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2674 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2675 | } |
bf4acbe4 | 2676 | #endif |
748a9306 | 2677 | if (d) { |
3280af22 NIS |
2678 | U32 oldpdb = PL_perldb; |
2679 | bool oldn = PL_minus_n; | |
2680 | bool oldp = PL_minus_p; | |
748a9306 LW |
2681 | |
2682 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2683 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2684 | |
2685 | if (*d++ == '-') { | |
8cc95fdb | 2686 | do { |
2687 | if (*d == 'M' || *d == 'm') { | |
2688 | char *m = d; | |
2689 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2690 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2691 | (int)(d - m), m); |
2692 | } | |
2693 | d = moreswitches(d); | |
2694 | } while (d); | |
155aba94 GS |
2695 | if ((PERLDB_LINE && !oldpdb) || |
2696 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2697 | /* if we have already added "LINE: while (<>) {", |
2698 | we must not do it again */ | |
748a9306 | 2699 | { |
3280af22 NIS |
2700 | sv_setpv(PL_linestr, ""); |
2701 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2702 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2703 | PL_preambled = FALSE; | |
84902520 | 2704 | if (PERLDB_LINE) |
3280af22 | 2705 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2706 | goto retry; |
2707 | } | |
a0d0e21e | 2708 | } |
79072805 | 2709 | } |
9f68db38 | 2710 | } |
79072805 | 2711 | } |
3280af22 NIS |
2712 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2713 | PL_bufptr = s; | |
2714 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2715 | return yylex(); |
ae986130 | 2716 | } |
378cc40b | 2717 | goto retry; |
4fdae800 | 2718 | case '\r': |
6a27c188 | 2719 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2720 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2721 | Perl_croak(aTHX_ | |
cc507455 | 2722 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2723 | #endif |
4fdae800 | 2724 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2725 | #ifdef MACOS_TRADITIONAL |
2726 | case '\312': | |
2727 | #endif | |
378cc40b LW |
2728 | s++; |
2729 | goto retry; | |
378cc40b | 2730 | case '#': |
e929a76b | 2731 | case '\n': |
3280af22 | 2732 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2733 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2734 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2735 | CopLINE_dec(PL_curcop); | |
2736 | incline(s); | |
2737 | } | |
3280af22 | 2738 | d = PL_bufend; |
a687059c | 2739 | while (s < d && *s != '\n') |
378cc40b | 2740 | s++; |
0f85fab0 | 2741 | if (s < d) |
378cc40b | 2742 | s++; |
463ee0b2 | 2743 | incline(s); |
3280af22 NIS |
2744 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2745 | PL_bufptr = s; | |
2746 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2747 | return yylex(); |
a687059c | 2748 | } |
378cc40b | 2749 | } |
a687059c | 2750 | else { |
378cc40b | 2751 | *s = '\0'; |
3280af22 | 2752 | PL_bufend = s; |
a687059c | 2753 | } |
378cc40b LW |
2754 | goto retry; |
2755 | case '-': | |
79072805 | 2756 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2757 | s++; |
3280af22 | 2758 | PL_bufptr = s; |
748a9306 LW |
2759 | tmp = *s++; |
2760 | ||
bf4acbe4 | 2761 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2762 | s++; |
2763 | ||
2764 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2765 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2766 | OPERATOR('-'); /* unary minus */ |
2767 | } | |
3280af22 NIS |
2768 | PL_last_uni = PL_oldbufptr; |
2769 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2770 | switch (tmp) { |
79072805 LW |
2771 | case 'r': FTST(OP_FTEREAD); |
2772 | case 'w': FTST(OP_FTEWRITE); | |
2773 | case 'x': FTST(OP_FTEEXEC); | |
2774 | case 'o': FTST(OP_FTEOWNED); | |
2775 | case 'R': FTST(OP_FTRREAD); | |
2776 | case 'W': FTST(OP_FTRWRITE); | |
2777 | case 'X': FTST(OP_FTREXEC); | |
2778 | case 'O': FTST(OP_FTROWNED); | |
2779 | case 'e': FTST(OP_FTIS); | |
2780 | case 'z': FTST(OP_FTZERO); | |
2781 | case 's': FTST(OP_FTSIZE); | |
2782 | case 'f': FTST(OP_FTFILE); | |
2783 | case 'd': FTST(OP_FTDIR); | |
2784 | case 'l': FTST(OP_FTLINK); | |
2785 | case 'p': FTST(OP_FTPIPE); | |
2786 | case 'S': FTST(OP_FTSOCK); | |
2787 | case 'u': FTST(OP_FTSUID); | |
2788 | case 'g': FTST(OP_FTSGID); | |
2789 | case 'k': FTST(OP_FTSVTX); | |
2790 | case 'b': FTST(OP_FTBLK); | |
2791 | case 'c': FTST(OP_FTCHR); | |
2792 | case 't': FTST(OP_FTTTY); | |
2793 | case 'T': FTST(OP_FTTEXT); | |
2794 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2795 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2796 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2797 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2798 | default: |
cea2e8a9 | 2799 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2800 | break; |
2801 | } | |
2802 | } | |
a687059c LW |
2803 | tmp = *s++; |
2804 | if (*s == tmp) { | |
2805 | s++; | |
3280af22 | 2806 | if (PL_expect == XOPERATOR) |
79072805 LW |
2807 | TERM(POSTDEC); |
2808 | else | |
2809 | OPERATOR(PREDEC); | |
2810 | } | |
2811 | else if (*s == '>') { | |
2812 | s++; | |
2813 | s = skipspace(s); | |
7e2040f0 | 2814 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2815 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2816 | TOKEN(ARROW); |
79072805 | 2817 | } |
748a9306 LW |
2818 | else if (*s == '$') |
2819 | OPERATOR(ARROW); | |
463ee0b2 | 2820 | else |
748a9306 | 2821 | TERM(ARROW); |
a687059c | 2822 | } |
3280af22 | 2823 | if (PL_expect == XOPERATOR) |
79072805 LW |
2824 | Aop(OP_SUBTRACT); |
2825 | else { | |
3280af22 | 2826 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2827 | check_uni(); |
79072805 | 2828 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2829 | } |
79072805 | 2830 | |
378cc40b | 2831 | case '+': |
a687059c LW |
2832 | tmp = *s++; |
2833 | if (*s == tmp) { | |
378cc40b | 2834 | s++; |
3280af22 | 2835 | if (PL_expect == XOPERATOR) |
79072805 LW |
2836 | TERM(POSTINC); |
2837 | else | |
2838 | OPERATOR(PREINC); | |
378cc40b | 2839 | } |
3280af22 | 2840 | if (PL_expect == XOPERATOR) |
79072805 LW |
2841 | Aop(OP_ADD); |
2842 | else { | |
3280af22 | 2843 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2844 | check_uni(); |
a687059c | 2845 | OPERATOR('+'); |
2f3197b3 | 2846 | } |
a687059c | 2847 | |
378cc40b | 2848 | case '*': |
3280af22 NIS |
2849 | if (PL_expect != XOPERATOR) { |
2850 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2851 | PL_expect = XOPERATOR; | |
2852 | force_ident(PL_tokenbuf, '*'); | |
2853 | if (!*PL_tokenbuf) | |
a0d0e21e | 2854 | PREREF('*'); |
79072805 | 2855 | TERM('*'); |
a687059c | 2856 | } |
79072805 LW |
2857 | s++; |
2858 | if (*s == '*') { | |
a687059c | 2859 | s++; |
79072805 | 2860 | PWop(OP_POW); |
a687059c | 2861 | } |
79072805 LW |
2862 | Mop(OP_MULTIPLY); |
2863 | ||
378cc40b | 2864 | case '%': |
3280af22 | 2865 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2866 | ++s; |
2867 | Mop(OP_MODULO); | |
a687059c | 2868 | } |
3280af22 NIS |
2869 | PL_tokenbuf[0] = '%'; |
2870 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2871 | if (!PL_tokenbuf[1]) { | |
2872 | if (s == PL_bufend) | |
bbce6d69 | 2873 | yyerror("Final % should be \\% or %name"); |
2874 | PREREF('%'); | |
a687059c | 2875 | } |
3280af22 | 2876 | PL_pending_ident = '%'; |
bbce6d69 | 2877 | TERM('%'); |
a687059c | 2878 | |
378cc40b | 2879 | case '^': |
79072805 | 2880 | s++; |
a0d0e21e | 2881 | BOop(OP_BIT_XOR); |
79072805 | 2882 | case '[': |
3280af22 | 2883 | PL_lex_brackets++; |
79072805 | 2884 | /* FALL THROUGH */ |
378cc40b | 2885 | case '~': |
378cc40b | 2886 | case ',': |
378cc40b LW |
2887 | tmp = *s++; |
2888 | OPERATOR(tmp); | |
a0d0e21e LW |
2889 | case ':': |
2890 | if (s[1] == ':') { | |
2891 | len = 0; | |
2892 | goto just_a_word; | |
2893 | } | |
2894 | s++; | |
09bef843 SB |
2895 | switch (PL_expect) { |
2896 | OP *attrs; | |
2897 | case XOPERATOR: | |
2898 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2899 | break; | |
2900 | PL_bufptr = s; /* update in case we back off */ | |
2901 | goto grabattrs; | |
2902 | case XATTRBLOCK: | |
2903 | PL_expect = XBLOCK; | |
2904 | goto grabattrs; | |
2905 | case XATTRTERM: | |
2906 | PL_expect = XTERMBLOCK; | |
2907 | grabattrs: | |
2908 | s = skipspace(s); | |
2909 | attrs = Nullop; | |
7e2040f0 | 2910 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2911 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2912 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2913 | if (tmp < 0) tmp = -tmp; | |
2914 | switch (tmp) { | |
2915 | case KEY_or: | |
2916 | case KEY_and: | |
2917 | case KEY_for: | |
2918 | case KEY_unless: | |
2919 | case KEY_if: | |
2920 | case KEY_while: | |
2921 | case KEY_until: | |
2922 | goto got_attrs; | |
2923 | default: | |
2924 | break; | |
2925 | } | |
2926 | } | |
09bef843 SB |
2927 | if (*d == '(') { |
2928 | d = scan_str(d,TRUE,TRUE); | |
2929 | if (!d) { | |
2930 | if (PL_lex_stuff) { | |
2931 | SvREFCNT_dec(PL_lex_stuff); | |
2932 | PL_lex_stuff = Nullsv; | |
2933 | } | |
2934 | /* MUST advance bufptr here to avoid bogus | |
2935 | "at end of line" context messages from yyerror(). | |
2936 | */ | |
2937 | PL_bufptr = s + len; | |
2938 | yyerror("Unterminated attribute parameter in attribute list"); | |
2939 | if (attrs) | |
2940 | op_free(attrs); | |
2941 | return 0; /* EOF indicator */ | |
2942 | } | |
2943 | } | |
2944 | if (PL_lex_stuff) { | |
2945 | SV *sv = newSVpvn(s, len); | |
2946 | sv_catsv(sv, PL_lex_stuff); | |
2947 | attrs = append_elem(OP_LIST, attrs, | |
2948 | newSVOP(OP_CONST, 0, sv)); | |
2949 | SvREFCNT_dec(PL_lex_stuff); | |
2950 | PL_lex_stuff = Nullsv; | |
2951 | } | |
2952 | else { | |
2953 | attrs = append_elem(OP_LIST, attrs, | |
2954 | newSVOP(OP_CONST, 0, | |
2955 | newSVpvn(s, len))); | |
2956 | } | |
2957 | s = skipspace(d); | |
0120eecf | 2958 | if (*s == ':' && s[1] != ':') |
09bef843 | 2959 | s = skipspace(s+1); |
0120eecf GS |
2960 | else if (s == d) |
2961 | break; /* require real whitespace or :'s */ | |
09bef843 | 2962 | } |
f9829d6b GS |
2963 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
2964 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
2965 | char q = ((*s == '\'') ? '"' : '\''); |
2966 | /* If here for an expression, and parsed no attrs, back off. */ | |
2967 | if (tmp == '=' && !attrs) { | |
2968 | s = PL_bufptr; | |
2969 | break; | |
2970 | } | |
2971 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2972 | context messages from yyerror(). | |
2973 | */ | |
2974 | PL_bufptr = s; | |
2975 | if (!*s) | |
2976 | yyerror("Unterminated attribute list"); | |
2977 | else | |
2978 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2979 | q, *s, q)); | |
2980 | if (attrs) | |
2981 | op_free(attrs); | |
2982 | OPERATOR(':'); | |
2983 | } | |
f9829d6b | 2984 | got_attrs: |
09bef843 SB |
2985 | if (attrs) { |
2986 | PL_nextval[PL_nexttoke].opval = attrs; | |
2987 | force_next(THING); | |
2988 | } | |
2989 | TOKEN(COLONATTR); | |
2990 | } | |
a0d0e21e | 2991 | OPERATOR(':'); |
8990e307 LW |
2992 | case '(': |
2993 | s++; | |
3280af22 NIS |
2994 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2995 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2996 | else |
3280af22 | 2997 | PL_expect = XTERM; |
a0d0e21e | 2998 | TOKEN('('); |
378cc40b | 2999 | case ';': |
f4dd75d9 | 3000 | CLINE; |
378cc40b LW |
3001 | tmp = *s++; |
3002 | OPERATOR(tmp); | |
3003 | case ')': | |
378cc40b | 3004 | tmp = *s++; |
16d20bd9 AD |
3005 | s = skipspace(s); |
3006 | if (*s == '{') | |
3007 | PREBLOCK(tmp); | |
378cc40b | 3008 | TERM(tmp); |
79072805 LW |
3009 | case ']': |
3010 | s++; | |
3280af22 | 3011 | if (PL_lex_brackets <= 0) |
d98d5fff | 3012 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3013 | else |
3280af22 NIS |
3014 | --PL_lex_brackets; |
3015 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3016 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3017 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3018 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3019 | } |
3020 | } | |
4633a7c4 | 3021 | TERM(']'); |
79072805 LW |
3022 | case '{': |
3023 | leftbracket: | |
79072805 | 3024 | s++; |
3280af22 NIS |
3025 | if (PL_lex_brackets > 100) { |
3026 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
3027 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 3028 | SAVEFREEPV(newlb); |
3280af22 | 3029 | PL_lex_brackstack = newlb; |
8990e307 LW |
3030 | } |
3031 | } | |
3280af22 | 3032 | switch (PL_expect) { |
a0d0e21e | 3033 | case XTERM: |
3280af22 | 3034 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3035 | s--; |
3036 | PRETERMBLOCK(DO); | |
3037 | } | |
3280af22 NIS |
3038 | if (PL_oldoldbufptr == PL_last_lop) |
3039 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3040 | else |
3280af22 | 3041 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3042 | OPERATOR(HASHBRACK); |
a0d0e21e | 3043 | case XOPERATOR: |
bf4acbe4 | 3044 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3045 | s++; |
44a8e56a | 3046 | d = s; |
3280af22 NIS |
3047 | PL_tokenbuf[0] = '\0'; |
3048 | if (d < PL_bufend && *d == '-') { | |
3049 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3050 | d++; |
bf4acbe4 | 3051 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3052 | d++; |
3053 | } | |
7e2040f0 | 3054 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3055 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3056 | FALSE, &len); |
bf4acbe4 | 3057 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3058 | d++; |
3059 | if (*d == '}') { | |
3280af22 | 3060 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3061 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3062 | if (minus) | |
3063 | force_next('-'); | |
748a9306 LW |
3064 | } |
3065 | } | |
3066 | /* FALL THROUGH */ | |
09bef843 | 3067 | case XATTRBLOCK: |
748a9306 | 3068 | case XBLOCK: |
3280af22 NIS |
3069 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3070 | PL_expect = XSTATE; | |
a0d0e21e | 3071 | break; |
09bef843 | 3072 | case XATTRTERM: |
a0d0e21e | 3073 | case XTERMBLOCK: |
3280af22 NIS |
3074 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3075 | PL_expect = XSTATE; | |
a0d0e21e LW |
3076 | break; |
3077 | default: { | |
3078 | char *t; | |
3280af22 NIS |
3079 | if (PL_oldoldbufptr == PL_last_lop) |
3080 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3081 | else |
3280af22 | 3082 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3083 | s = skipspace(s); |
09ecc4b6 | 3084 | if (*s == '}') |
a0d0e21e | 3085 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
3086 | /* This hack serves to disambiguate a pair of curlies |
3087 | * as being a block or an anon hash. Normally, expectation | |
3088 | * determines that, but in cases where we're not in a | |
3089 | * position to expect anything in particular (like inside | |
3090 | * eval"") we have to resolve the ambiguity. This code | |
3091 | * covers the case where the first term in the curlies is a | |
3092 | * quoted string. Most other cases need to be explicitly | |
3093 | * disambiguated by prepending a `+' before the opening | |
3094 | * curly in order to force resolution as an anon hash. | |
3095 | * | |
3096 | * XXX should probably propagate the outer expectation | |
3097 | * into eval"" to rely less on this hack, but that could | |
3098 | * potentially break current behavior of eval"". | |
3099 | * GSAR 97-07-21 | |
3100 | */ | |
3101 | t = s; | |
3102 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3103 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3104 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3105 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3106 | t++; | |
3107 | t++; | |
a0d0e21e | 3108 | } |
b8a4b1be | 3109 | else if (*s == 'q') { |
3280af22 | 3110 | if (++t < PL_bufend |
b8a4b1be | 3111 | && (!isALNUM(*t) |
3280af22 | 3112 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3113 | && !isALNUM(*t)))) |
3114 | { | |
b8a4b1be GS |
3115 | char *tmps; |
3116 | char open, close, term; | |
3117 | I32 brackets = 1; | |
3118 | ||
3280af22 | 3119 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3120 | t++; |
3121 | term = *t; | |
3122 | open = term; | |
3123 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3124 | term = tmps[5]; | |
3125 | close = term; | |
3126 | if (open == close) | |
3280af22 NIS |
3127 | for (t++; t < PL_bufend; t++) { |
3128 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3129 | t++; |
6d07e5e9 | 3130 | else if (*t == open) |
b8a4b1be GS |
3131 | break; |
3132 | } | |
3133 | else | |
3280af22 NIS |
3134 | for (t++; t < PL_bufend; t++) { |
3135 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3136 | t++; |
6d07e5e9 | 3137 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3138 | break; |
3139 | else if (*t == open) | |
3140 | brackets++; | |
3141 | } | |
3142 | } | |
3143 | t++; | |
a0d0e21e | 3144 | } |
7e2040f0 | 3145 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3146 | t += UTF8SKIP(t); |
7e2040f0 | 3147 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3148 | t += UTF8SKIP(t); |
a0d0e21e | 3149 | } |
3280af22 | 3150 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3151 | t++; |
b8a4b1be GS |
3152 | /* if comma follows first term, call it an anon hash */ |
3153 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3154 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3155 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3156 | OPERATOR(HASHBRACK); |
3280af22 | 3157 | if (PL_expect == XREF) |
4e4e412b | 3158 | PL_expect = XTERM; |
a0d0e21e | 3159 | else { |
3280af22 NIS |
3160 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3161 | PL_expect = XSTATE; | |
a0d0e21e | 3162 | } |
8990e307 | 3163 | } |
a0d0e21e | 3164 | break; |
463ee0b2 | 3165 | } |
57843af0 | 3166 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3167 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3168 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3169 | TOKEN('{'); |
378cc40b | 3170 | case '}': |
79072805 LW |
3171 | rightbracket: |
3172 | s++; | |
3280af22 | 3173 | if (PL_lex_brackets <= 0) |
d98d5fff | 3174 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3175 | else |
3280af22 | 3176 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3177 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3178 | PL_lex_formbrack = 0; |
3179 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3180 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3181 | if (PL_expect & XFAKEBRACK) { |
3182 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3183 | PL_lex_state = LEX_INTERPEND; |
3184 | PL_bufptr = s; | |
cea2e8a9 | 3185 | return yylex(); /* ignore fake brackets */ |
79072805 | 3186 | } |
fa83b5b6 | 3187 | if (*s == '-' && s[1] == '>') |
3280af22 | 3188 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3189 | else if (*s != '[' && *s != '{') |
3280af22 | 3190 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3191 | } |
3192 | } | |
9059aa12 LW |
3193 | if (PL_expect & XFAKEBRACK) { |
3194 | PL_expect &= XENUMMASK; | |
3280af22 | 3195 | PL_bufptr = s; |
cea2e8a9 | 3196 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3197 | } |
79072805 LW |
3198 | force_next('}'); |
3199 | TOKEN(';'); | |
378cc40b LW |
3200 | case '&': |
3201 | s++; | |
3202 | tmp = *s++; | |
3203 | if (tmp == '&') | |
a0d0e21e | 3204 | AOPERATOR(ANDAND); |
378cc40b | 3205 | s--; |
3280af22 | 3206 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3207 | if (ckWARN(WARN_SEMICOLON) |
3208 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3209 | { | |
57843af0 | 3210 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3211 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3212 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3213 | } |
79072805 | 3214 | BAop(OP_BIT_AND); |
463ee0b2 | 3215 | } |
79072805 | 3216 | |
3280af22 NIS |
3217 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3218 | if (*PL_tokenbuf) { | |
3219 | PL_expect = XOPERATOR; | |
3220 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3221 | } |
79072805 LW |
3222 | else |
3223 | PREREF('&'); | |
c07a80fd | 3224 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3225 | TERM('&'); |
3226 | ||
378cc40b LW |
3227 | case '|': |
3228 | s++; | |
3229 | tmp = *s++; | |
3230 | if (tmp == '|') | |
a0d0e21e | 3231 | AOPERATOR(OROR); |
378cc40b | 3232 | s--; |
79072805 | 3233 | BOop(OP_BIT_OR); |
378cc40b LW |
3234 | case '=': |
3235 | s++; | |
3236 | tmp = *s++; | |
3237 | if (tmp == '=') | |
79072805 LW |
3238 | Eop(OP_EQ); |
3239 | if (tmp == '>') | |
3240 | OPERATOR(','); | |
378cc40b | 3241 | if (tmp == '~') |
79072805 | 3242 | PMop(OP_MATCH); |
599cee73 | 3243 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3244 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3245 | s--; |
3280af22 NIS |
3246 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3247 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3248 | { |
3280af22 NIS |
3249 | if (PL_in_eval && !PL_rsfp) { |
3250 | d = PL_bufend; | |
a5f75d66 AD |
3251 | while (s < d) { |
3252 | if (*s++ == '\n') { | |
3253 | incline(s); | |
3254 | if (strnEQ(s,"=cut",4)) { | |
3255 | s = strchr(s,'\n'); | |
3256 | if (s) | |
3257 | s++; | |
3258 | else | |
3259 | s = d; | |
3260 | incline(s); | |
3261 | goto retry; | |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | goto retry; | |
3266 | } | |
3280af22 NIS |
3267 | s = PL_bufend; |
3268 | PL_doextract = TRUE; | |
a0d0e21e LW |
3269 | goto retry; |
3270 | } | |
3280af22 | 3271 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3272 | char *t; |
51882d45 | 3273 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3274 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3275 | #else |
bf4acbe4 | 3276 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3277 | #endif |
a0d0e21e LW |
3278 | if (*t == '\n' || *t == '#') { |
3279 | s--; | |
3280af22 | 3280 | PL_expect = XBLOCK; |
a0d0e21e LW |
3281 | goto leftbracket; |
3282 | } | |
79072805 | 3283 | } |
a0d0e21e LW |
3284 | yylval.ival = 0; |
3285 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3286 | case '!': |
3287 | s++; | |
3288 | tmp = *s++; | |
3289 | if (tmp == '=') | |
79072805 | 3290 | Eop(OP_NE); |
378cc40b | 3291 | if (tmp == '~') |
79072805 | 3292 | PMop(OP_NOT); |
378cc40b LW |
3293 | s--; |
3294 | OPERATOR('!'); | |
3295 | case '<': | |
3280af22 | 3296 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3297 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3298 | check_uni(); |
79072805 LW |
3299 | if (s[1] == '<') |
3300 | s = scan_heredoc(s); | |
3301 | else | |
3302 | s = scan_inputsymbol(s); | |
3303 | TERM(sublex_start()); | |
378cc40b LW |
3304 | } |
3305 | s++; | |
3306 | tmp = *s++; | |
3307 | if (tmp == '<') | |
79072805 | 3308 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3309 | if (tmp == '=') { |
3310 | tmp = *s++; | |
3311 | if (tmp == '>') | |
79072805 | 3312 | Eop(OP_NCMP); |
395c3793 | 3313 | s--; |
79072805 | 3314 | Rop(OP_LE); |
395c3793 | 3315 | } |
378cc40b | 3316 | s--; |
79072805 | 3317 | Rop(OP_LT); |
378cc40b LW |
3318 | case '>': |
3319 | s++; | |
3320 | tmp = *s++; | |
3321 | if (tmp == '>') | |
79072805 | 3322 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3323 | if (tmp == '=') |
79072805 | 3324 | Rop(OP_GE); |
378cc40b | 3325 | s--; |
79072805 | 3326 | Rop(OP_GT); |
378cc40b LW |
3327 | |
3328 | case '$': | |
bbce6d69 | 3329 | CLINE; |
3330 | ||
3280af22 NIS |
3331 | if (PL_expect == XOPERATOR) { |
3332 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3333 | PL_expect = XTERM; | |
a0d0e21e | 3334 | depcom(); |
bbce6d69 | 3335 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3336 | } |
8990e307 | 3337 | } |
a0d0e21e | 3338 | |
7e2040f0 | 3339 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3340 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3341 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3342 | sizeof PL_tokenbuf - 1, FALSE); | |
3343 | if (PL_expect == XOPERATOR) | |
3344 | no_op("Array length", s); | |
3280af22 | 3345 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3346 | PREREF(DOLSHARP); |
3280af22 NIS |
3347 | PL_expect = XOPERATOR; |
3348 | PL_pending_ident = '#'; | |
463ee0b2 | 3349 | TOKEN(DOLSHARP); |
79072805 | 3350 | } |
bbce6d69 | 3351 | |
3280af22 | 3352 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3353 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3354 | sizeof PL_tokenbuf - 1, FALSE); | |
3355 | if (PL_expect == XOPERATOR) | |
3356 | no_op("Scalar", s); | |
3280af22 NIS |
3357 | if (!PL_tokenbuf[1]) { |
3358 | if (s == PL_bufend) | |
bbce6d69 | 3359 | yyerror("Final $ should be \\$ or $name"); |
3360 | PREREF('$'); | |
8990e307 | 3361 | } |
a0d0e21e | 3362 | |
bbce6d69 | 3363 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3364 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3365 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3366 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3367 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3368 | TERM(THING); | |
3369 | } | |
3370 | ||
ff68c719 | 3371 | d = s; |
69d2bceb | 3372 | tmp = (I32)*s; |
3280af22 | 3373 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3374 | s = skipspace(s); |
3375 | ||
3280af22 | 3376 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3377 | char *t; |
3378 | if (*s == '[') { | |
3280af22 | 3379 | PL_tokenbuf[0] = '@'; |
599cee73 | 3380 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3381 | for(t = s + 1; |
7e2040f0 | 3382 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3383 | t++) ; |
a0d0e21e | 3384 | if (*t++ == ',') { |
3280af22 NIS |
3385 | PL_bufptr = skipspace(PL_bufptr); |
3386 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3387 | t++; |
cea2e8a9 | 3388 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3389 | "Multidimensional syntax %.*s not supported", |
3390 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3391 | } |
3392 | } | |
bbce6d69 | 3393 | } |
3394 | else if (*s == '{') { | |
3280af22 | 3395 | PL_tokenbuf[0] = '%'; |
599cee73 | 3396 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3397 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3398 | { | |
3280af22 | 3399 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3400 | STRLEN len; |
3401 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3402 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3403 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3404 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3405 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3406 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3407 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3408 | } |
93a17b20 LW |
3409 | } |
3410 | } | |
2f3197b3 | 3411 | } |
bbce6d69 | 3412 | |
3280af22 | 3413 | PL_expect = XOPERATOR; |
69d2bceb | 3414 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3415 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3416 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3417 | PL_expect = XOPERATOR; | |
bbce6d69 | 3418 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3419 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3420 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3421 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3422 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3423 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3424 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3425 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3426 | /* binary operators exclude handle interpretations */ |
3427 | switch (tmp) { | |
3428 | case -KEY_x: | |
3429 | case -KEY_eq: | |
3430 | case -KEY_ne: | |
3431 | case -KEY_gt: | |
3432 | case -KEY_lt: | |
3433 | case -KEY_ge: | |
3434 | case -KEY_le: | |
3435 | case -KEY_cmp: | |
3436 | break; | |
3437 | default: | |
3280af22 | 3438 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3439 | break; |
3440 | } | |
3441 | } | |
68dc0745 | 3442 | else { |
3443 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3444 | if (gv && GvCVu(gv)) | |
3280af22 | 3445 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3446 | } |
93a17b20 | 3447 | } |
bbce6d69 | 3448 | else if (isDIGIT(*s)) |
3280af22 | 3449 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3450 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3451 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3452 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3453 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3454 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3455 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3456 | } |
3280af22 | 3457 | PL_pending_ident = '$'; |
79072805 | 3458 | TOKEN('$'); |
378cc40b LW |
3459 | |
3460 | case '@': | |
3280af22 | 3461 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3462 | no_op("Array", s); |
3280af22 NIS |
3463 | PL_tokenbuf[0] = '@'; |
3464 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3465 | if (!PL_tokenbuf[1]) { | |
3466 | if (s == PL_bufend) | |
bbce6d69 | 3467 | yyerror("Final @ should be \\@ or @name"); |
3468 | PREREF('@'); | |
3469 | } | |
3280af22 | 3470 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3471 | s = skipspace(s); |
3280af22 | 3472 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3473 | if (*s == '{') |
3280af22 | 3474 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3475 | |
3476 | /* Warn about @ where they meant $. */ | |
599cee73 | 3477 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3478 | if (*s == '[' || *s == '{') { |
3479 | char *t = s + 1; | |
7e2040f0 | 3480 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3481 | t++; |
3482 | if (*t == '}' || *t == ']') { | |
3483 | t++; | |
3280af22 | 3484 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3485 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3486 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3487 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3488 | } |
93a17b20 LW |
3489 | } |
3490 | } | |
463ee0b2 | 3491 | } |
3280af22 | 3492 | PL_pending_ident = '@'; |
79072805 | 3493 | TERM('@'); |
378cc40b LW |
3494 | |
3495 | case '/': /* may either be division or pattern */ | |
3496 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3497 | if (PL_expect != XOPERATOR) { |
c277df42 | 3498 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3499 | if (PL_oldoldbufptr == PL_last_uni |
3500 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3501 | || memNE(PL_last_uni, "study", 5) |
3502 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3503 | check_uni(); |
8782bef2 | 3504 | s = scan_pat(s,OP_MATCH); |
79072805 | 3505 | TERM(sublex_start()); |
378cc40b LW |
3506 | } |
3507 | tmp = *s++; | |
a687059c | 3508 | if (tmp == '/') |
79072805 | 3509 | Mop(OP_DIVIDE); |
378cc40b LW |
3510 | OPERATOR(tmp); |
3511 | ||
3512 | case '.': | |
51882d45 GS |
3513 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3514 | #ifdef PERL_STRICT_CR | |
3515 | && s[1] == '\n' | |
3516 | #else | |
3517 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3518 | #endif | |
3519 | && (s == PL_linestart || s[-1] == '\n') ) | |
3520 | { | |
3280af22 NIS |
3521 | PL_lex_formbrack = 0; |
3522 | PL_expect = XSTATE; | |
79072805 LW |
3523 | goto rightbracket; |
3524 | } | |
3280af22 | 3525 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3526 | tmp = *s++; |
a687059c LW |
3527 | if (*s == tmp) { |
3528 | s++; | |
2f3197b3 LW |
3529 | if (*s == tmp) { |
3530 | s++; | |
79072805 | 3531 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3532 | } |
3533 | else | |
79072805 | 3534 | yylval.ival = 0; |
378cc40b | 3535 | OPERATOR(DOTDOT); |
a687059c | 3536 | } |
3280af22 | 3537 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3538 | check_uni(); |
79072805 | 3539 | Aop(OP_CONCAT); |
378cc40b LW |
3540 | } |
3541 | /* FALL THROUGH */ | |
3542 | case '0': case '1': case '2': case '3': case '4': | |
3543 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3544 | s = scan_num(s); |
3280af22 | 3545 | if (PL_expect == XOPERATOR) |
8990e307 | 3546 | no_op("Number",s); |
79072805 LW |
3547 | TERM(THING); |
3548 | ||
3549 | case '\'': | |
09bef843 | 3550 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3551 | if (PL_expect == XOPERATOR) { |
3552 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3553 | PL_expect = XTERM; | |
a0d0e21e LW |
3554 | depcom(); |
3555 | return ','; /* grandfather non-comma-format format */ | |
3556 | } | |
463ee0b2 | 3557 | else |
8990e307 | 3558 | no_op("String",s); |
463ee0b2 | 3559 | } |
79072805 | 3560 | if (!s) |
85e6fe83 | 3561 | missingterm((char*)0); |
79072805 LW |
3562 | yylval.ival = OP_CONST; |
3563 | TERM(sublex_start()); | |
3564 | ||
3565 | case '"': | |
09bef843 | 3566 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3567 | if (PL_expect == XOPERATOR) { |
3568 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3569 | PL_expect = XTERM; | |
a0d0e21e LW |
3570 | depcom(); |
3571 | return ','; /* grandfather non-comma-format format */ | |
3572 | } | |
463ee0b2 | 3573 | else |
8990e307 | 3574 | no_op("String",s); |
463ee0b2 | 3575 | } |
79072805 | 3576 | if (!s) |
85e6fe83 | 3577 | missingterm((char*)0); |
4633a7c4 | 3578 | yylval.ival = OP_CONST; |
3280af22 | 3579 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3580 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3581 | yylval.ival = OP_STRINGIFY; |
3582 | break; | |
3583 | } | |
3584 | } | |
79072805 LW |
3585 | TERM(sublex_start()); |
3586 | ||
3587 | case '`': | |
09bef843 | 3588 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3589 | if (PL_expect == XOPERATOR) |
8990e307 | 3590 | no_op("Backticks",s); |
79072805 | 3591 | if (!s) |
85e6fe83 | 3592 | missingterm((char*)0); |
79072805 LW |
3593 | yylval.ival = OP_BACKTICK; |
3594 | set_csh(); | |
3595 | TERM(sublex_start()); | |
3596 | ||
3597 | case '\\': | |
3598 | s++; | |
599cee73 | 3599 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3600 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3601 | *s, *s); |
3280af22 | 3602 | if (PL_expect == XOPERATOR) |
8990e307 | 3603 | no_op("Backslash",s); |
79072805 LW |
3604 | OPERATOR(REFGEN); |
3605 | ||
a7cb1f99 | 3606 | case 'v': |
e526c9e6 | 3607 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3608 | char *start = s; |
3609 | start++; | |
3610 | start++; | |
dd629d5b | 3611 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3612 | start++; |
3613 | if (*start == '.' && isDIGIT(start[1])) { | |
3614 | s = scan_num(s); | |
3615 | TERM(THING); | |
3616 | } | |
e526c9e6 GS |
3617 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
3618 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF)) { | |
3619 | char c = *start; | |
3620 | GV *gv; | |
3621 | *start = '\0'; | |
3622 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3623 | *start = c; | |
3624 | if (!gv) { | |
3625 | s = scan_num(s); | |
3626 | TERM(THING); | |
3627 | } | |
3628 | } | |
a7cb1f99 GS |
3629 | } |
3630 | goto keylookup; | |
79072805 | 3631 | case 'x': |
3280af22 | 3632 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3633 | s++; |
3634 | Mop(OP_REPEAT); | |
2f3197b3 | 3635 | } |
79072805 LW |
3636 | goto keylookup; |
3637 | ||
378cc40b | 3638 | case '_': |
79072805 LW |
3639 | case 'a': case 'A': |
3640 | case 'b': case 'B': | |
3641 | case 'c': case 'C': | |
3642 | case 'd': case 'D': | |
3643 | case 'e': case 'E': | |
3644 | case 'f': case 'F': | |
3645 | case 'g': case 'G': | |
3646 | case 'h': case 'H': | |
3647 | case 'i': case 'I': | |
3648 | case 'j': case 'J': | |
3649 | case 'k': case 'K': | |
3650 | case 'l': case 'L': | |
3651 | case 'm': case 'M': | |
3652 | case 'n': case 'N': | |
3653 | case 'o': case 'O': | |
3654 | case 'p': case 'P': | |
3655 | case 'q': case 'Q': | |
3656 | case 'r': case 'R': | |
3657 | case 's': case 'S': | |
3658 | case 't': case 'T': | |
3659 | case 'u': case 'U': | |
a7cb1f99 | 3660 | case 'V': |
79072805 LW |
3661 | case 'w': case 'W': |
3662 | case 'X': | |
3663 | case 'y': case 'Y': | |
3664 | case 'z': case 'Z': | |
3665 | ||
49dc05e3 | 3666 | keylookup: { |
161b471a NIS |
3667 | gv = Nullgv; |
3668 | gvp = 0; | |
49dc05e3 | 3669 | |
3280af22 NIS |
3670 | PL_bufptr = s; |
3671 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3672 | |
3673 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3674 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3675 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3676 | (PL_tokenbuf[0] == 'q' && | |
3677 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3678 | |
3679 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3680 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3681 | goto just_a_word; |
3682 | ||
3643fb5f | 3683 | d = s; |
3280af22 | 3684 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3685 | d++; /* no comments skipped here, or s### is misparsed */ |
3686 | ||
3687 | /* Is this a label? */ | |
3280af22 NIS |
3688 | if (!tmp && PL_expect == XSTATE |
3689 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3690 | s = d + 1; |
3280af22 | 3691 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3692 | CLINE; |
3693 | TOKEN(LABEL); | |
3643fb5f CS |
3694 | } |
3695 | ||
3696 | /* Check for keywords */ | |
3280af22 | 3697 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3698 | |
3699 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3700 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3701 | CLINE; |
3280af22 | 3702 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3703 | yylval.opval->op_private = OPpCONST_BARE; |
3704 | TERM(WORD); | |
3705 | } | |
3706 | ||
a0d0e21e | 3707 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3708 | GV *ogv = Nullgv; /* override (winner) */ |
3709 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3710 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3711 | CV *cv; |
3280af22 | 3712 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3713 | (cv = GvCVu(gv))) |
3714 | { | |
3715 | if (GvIMPORTED_CV(gv)) | |
3716 | ogv = gv; | |
3717 | else if (! CvMETHOD(cv)) | |
3718 | hgv = gv; | |
3719 | } | |
3720 | if (!ogv && | |
3280af22 NIS |
3721 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3722 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3723 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3724 | { | |
3725 | ogv = gv; | |
3726 | } | |
3727 | } | |
3728 | if (ogv) { | |
3729 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3730 | } |
3731 | else if (gv && !gvp | |
3732 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3733 | && GvCVu(gv) |
3280af22 | 3734 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3735 | { |
3736 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3737 | } |
56f7f34b CS |
3738 | else { /* no override */ |
3739 | tmp = -tmp; | |
3740 | gv = Nullgv; | |
3741 | gvp = 0; | |
4944e2f7 GS |
3742 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3743 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3744 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3745 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3746 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3747 | } |
a0d0e21e LW |
3748 | } |
3749 | ||
3750 | reserved_word: | |
3751 | switch (tmp) { | |
79072805 LW |
3752 | |
3753 | default: /* not a keyword */ | |
93a17b20 | 3754 | just_a_word: { |
96e4d5b1 | 3755 | SV *sv; |
3280af22 | 3756 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3757 | |
3758 | /* Get the rest if it looks like a package qualifier */ | |
3759 | ||
155aba94 | 3760 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3761 | STRLEN morelen; |
3280af22 | 3762 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3763 | TRUE, &morelen); |
3764 | if (!morelen) | |
cea2e8a9 | 3765 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3766 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3767 | len += morelen; |
a0d0e21e | 3768 | } |
8990e307 | 3769 | |
3280af22 NIS |
3770 | if (PL_expect == XOPERATOR) { |
3771 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3772 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3773 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3774 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3775 | } |
3776 | else | |
54310121 | 3777 | no_op("Bareword",s); |
463ee0b2 | 3778 | } |
8990e307 | 3779 | |
c3e0f903 GS |
3780 | /* Look for a subroutine with this name in current package, |
3781 | unless name is "Foo::", in which case Foo is a bearword | |
3782 | (and a package name). */ | |
3783 | ||
3784 | if (len > 2 && | |
3280af22 | 3785 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3786 | { |
e476b1b5 GS |
3787 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3788 | Perl_warner(aTHX_ WARN_BAREWORD, | |
599cee73 | 3789 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3790 | PL_tokenbuf); |
c3e0f903 | 3791 | len -= 2; |
3280af22 | 3792 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3793 | gv = Nullgv; |
3794 | gvp = 0; | |
3795 | } | |
3796 | else { | |
3797 | len = 0; | |
3798 | if (!gv) | |
3280af22 | 3799 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3800 | } |
3801 | ||
3802 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3803 | |
49dc05e3 | 3804 | if (gvp) { |
79cb57f6 | 3805 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3806 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3807 | } |
3808 | else | |
3280af22 | 3809 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3810 | |
a0d0e21e LW |
3811 | /* Presume this is going to be a bareword of some sort. */ |
3812 | ||
3813 | CLINE; | |
49dc05e3 | 3814 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3815 | yylval.opval->op_private = OPpCONST_BARE; |
3816 | ||
c3e0f903 GS |
3817 | /* And if "Foo::", then that's what it certainly is. */ |
3818 | ||
3819 | if (len) | |
3820 | goto safe_bareword; | |
3821 | ||
8990e307 LW |
3822 | /* See if it's the indirect object for a list operator. */ |
3823 | ||
3280af22 NIS |
3824 | if (PL_oldoldbufptr && |
3825 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3826 | (PL_oldoldbufptr == PL_last_lop |
3827 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3828 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3829 | (PL_expect == XREF || |
3830 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3831 | { |
748a9306 LW |
3832 | bool immediate_paren = *s == '('; |
3833 | ||
a0d0e21e LW |
3834 | /* (Now we can afford to cross potential line boundary.) */ |
3835 | s = skipspace(s); | |
3836 | ||
3837 | /* Two barewords in a row may indicate method call. */ | |
3838 | ||
7e2040f0 | 3839 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3840 | return tmp; |
3841 | ||
3842 | /* If not a declared subroutine, it's an indirect object. */ | |
3843 | /* (But it's an indir obj regardless for sort.) */ | |
3844 | ||
3280af22 | 3845 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3846 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3847 | (PL_last_lop_op != OP_MAPSTART && | |
3848 | PL_last_lop_op != OP_GREPSTART)) | |
3849 | { | |
3280af22 | 3850 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3851 | goto bareword; |
93a17b20 LW |
3852 | } |
3853 | } | |
8990e307 | 3854 | |
8990e307 | 3855 | |
3280af22 | 3856 | PL_expect = XOPERATOR; |
8990e307 | 3857 | s = skipspace(s); |
1c3923b3 GS |
3858 | |
3859 | /* Is this a word before a => operator? */ | |
3860 | if (*s == '=' && s[1] == '>') { | |
3861 | CLINE; | |
3862 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
3863 | TERM(WORD); | |
3864 | } | |
3865 | ||
3866 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 3867 | if (*s == '(') { |
79072805 | 3868 | CLINE; |
96e4d5b1 | 3869 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 3870 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 3871 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3872 | s = d + 1; |
3873 | goto its_constant; | |
3874 | } | |
3875 | } | |
3280af22 NIS |
3876 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3877 | PL_expect = XOPERATOR; | |
93a17b20 | 3878 | force_next(WORD); |
c07a80fd | 3879 | yylval.ival = 0; |
463ee0b2 | 3880 | TOKEN('&'); |
79072805 | 3881 | } |
93a17b20 | 3882 | |
a0d0e21e | 3883 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3884 | |
8ebc5c01 | 3885 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3886 | PL_last_lop = PL_oldbufptr; |
3887 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3888 | PREBLOCK(METHOD); |
463ee0b2 LW |
3889 | } |
3890 | ||
8990e307 LW |
3891 | /* If followed by a bareword, see if it looks like indir obj. */ |
3892 | ||
7e2040f0 | 3893 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3894 | return tmp; |
93a17b20 | 3895 | |
8990e307 LW |
3896 | /* Not a method, so call it a subroutine (if defined) */ |
3897 | ||
8ebc5c01 | 3898 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3899 | CV* cv; |
0453d815 PM |
3900 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3901 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3902 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3903 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3904 | /* Check for a constant sub */ |
46fc3d4c | 3905 | cv = GvCV(gv); |
96e4d5b1 | 3906 | if ((sv = cv_const_sv(cv))) { |
3907 | its_constant: | |
3908 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3909 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3910 | yylval.opval->op_private = 0; | |
3911 | TOKEN(WORD); | |
89bfa8cd | 3912 | } |
3913 | ||
a5f75d66 AD |
3914 | /* Resolve to GV now. */ |
3915 | op_free(yylval.opval); | |
3916 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3917 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3918 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3919 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3920 | /* Is there a prototype? */ |
3921 | if (SvPOK(cv)) { | |
3922 | STRLEN len; | |
7a52d87a | 3923 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3924 | if (!len) |
3925 | TERM(FUNC0SUB); | |
7a52d87a | 3926 | if (strEQ(proto, "$")) |
4633a7c4 | 3927 | OPERATOR(UNIOPSUB); |
7a52d87a | 3928 | if (*proto == '&' && *s == '{') { |
3280af22 | 3929 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3930 | PREBLOCK(LSTOPSUB); |
3931 | } | |
a9ef352a | 3932 | } |
3280af22 NIS |
3933 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3934 | PL_expect = XTERM; | |
8990e307 LW |
3935 | force_next(WORD); |
3936 | TOKEN(NOAMP); | |
3937 | } | |
748a9306 | 3938 | |
8990e307 LW |
3939 | /* Call it a bare word */ |
3940 | ||
5603f27d GS |
3941 | if (PL_hints & HINT_STRICT_SUBS) |
3942 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3943 | else { | |
3944 | bareword: | |
3945 | if (ckWARN(WARN_RESERVED)) { | |
3946 | if (lastchar != '-') { | |
3947 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3948 | if (!*d) | |
cea2e8a9 | 3949 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3950 | PL_tokenbuf); |
3951 | } | |
748a9306 LW |
3952 | } |
3953 | } | |
c3e0f903 GS |
3954 | |
3955 | safe_bareword: | |
f248d071 | 3956 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3957 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3958 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3959 | lastchar, PL_tokenbuf); |
0453d815 PM |
3960 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3961 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3962 | lastchar, lastchar); |
3963 | } | |
93a17b20 | 3964 | TOKEN(WORD); |
79072805 | 3965 | } |
79072805 | 3966 | |
68dc0745 | 3967 | case KEY___FILE__: |
46fc3d4c | 3968 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3969 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3970 | TERM(THING); |
3971 | ||
79072805 | 3972 | case KEY___LINE__: |
cf2093f6 | 3973 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3974 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3975 | TERM(THING); |
68dc0745 | 3976 | |
3977 | case KEY___PACKAGE__: | |
3978 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3979 | (PL_curstash |
3980 | ? newSVsv(PL_curstname) | |
3981 | : &PL_sv_undef)); | |
79072805 | 3982 | TERM(THING); |
79072805 | 3983 | |
e50aee73 | 3984 | case KEY___DATA__: |
79072805 LW |
3985 | case KEY___END__: { |
3986 | GV *gv; | |
79072805 LW |
3987 | |
3988 | /*SUPPRESS 560*/ | |
3280af22 | 3989 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3990 | char *pname = "main"; |
3280af22 NIS |
3991 | if (PL_tokenbuf[2] == 'D') |
3992 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3993 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3994 | GvMULTI_on(gv); |
79072805 | 3995 | if (!GvIO(gv)) |
a0d0e21e | 3996 | GvIOp(gv) = newIO(); |
3280af22 | 3997 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3998 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3999 | { | |
3280af22 | 4000 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4001 | fcntl(fd,F_SETFD,fd >= 3); |
4002 | } | |
79072805 | 4003 | #endif |
fd049845 | 4004 | /* Mark this internal pseudo-handle as clean */ |
4005 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4006 | if (PL_preprocess) |
a0d0e21e | 4007 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 4008 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 4009 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 4010 | else |
a0d0e21e | 4011 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
4012 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4013 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4014 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4015 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4016 | if (PL_bufend-PL_bufptr > 2 |
4017 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4018 | { |
4019 | Off_t loc = 0; | |
4020 | if (IoTYPE(GvIOp(gv)) == '<') { | |
4021 | loc = PerlIO_tell(PL_rsfp); | |
4022 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4023 | } | |
4024 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
4025 | #if defined(__BORLANDC__) | |
4026 | /* XXX see note in do_binmode() */ | |
4027 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
4028 | #endif | |
4029 | if (loc > 0) | |
4030 | PerlIO_seek(PL_rsfp, loc, 0); | |
4031 | } | |
4032 | } | |
4033 | #endif | |
3280af22 | 4034 | PL_rsfp = Nullfp; |
79072805 LW |
4035 | } |
4036 | goto fake_eof; | |
e929a76b | 4037 | } |
de3bb511 | 4038 | |
8990e307 | 4039 | case KEY_AUTOLOAD: |
ed6116ce | 4040 | case KEY_DESTROY: |
79072805 | 4041 | case KEY_BEGIN: |
7d30b5c4 | 4042 | case KEY_CHECK: |
7d07dbc2 | 4043 | case KEY_INIT: |
7d30b5c4 | 4044 | case KEY_END: |
3280af22 NIS |
4045 | if (PL_expect == XSTATE) { |
4046 | s = PL_bufptr; | |
93a17b20 | 4047 | goto really_sub; |
79072805 LW |
4048 | } |
4049 | goto just_a_word; | |
4050 | ||
a0d0e21e LW |
4051 | case KEY_CORE: |
4052 | if (*s == ':' && s[1] == ':') { | |
4053 | s += 2; | |
748a9306 | 4054 | d = s; |
3280af22 | 4055 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4056 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4057 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4058 | if (tmp < 0) |
4059 | tmp = -tmp; | |
4060 | goto reserved_word; | |
4061 | } | |
4062 | goto just_a_word; | |
4063 | ||
463ee0b2 LW |
4064 | case KEY_abs: |
4065 | UNI(OP_ABS); | |
4066 | ||
79072805 LW |
4067 | case KEY_alarm: |
4068 | UNI(OP_ALARM); | |
4069 | ||
4070 | case KEY_accept: | |
a0d0e21e | 4071 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4072 | |
463ee0b2 LW |
4073 | case KEY_and: |
4074 | OPERATOR(ANDOP); | |
4075 | ||
79072805 | 4076 | case KEY_atan2: |
a0d0e21e | 4077 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4078 | |
79072805 | 4079 | case KEY_bind: |
a0d0e21e | 4080 | LOP(OP_BIND,XTERM); |
79072805 LW |
4081 | |
4082 | case KEY_binmode: | |
1c1fc3ea | 4083 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4084 | |
4085 | case KEY_bless: | |
a0d0e21e | 4086 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4087 | |
4088 | case KEY_chop: | |
4089 | UNI(OP_CHOP); | |
4090 | ||
4091 | case KEY_continue: | |
4092 | PREBLOCK(CONTINUE); | |
4093 | ||
4094 | case KEY_chdir: | |
85e6fe83 | 4095 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4096 | UNI(OP_CHDIR); |
4097 | ||
4098 | case KEY_close: | |
4099 | UNI(OP_CLOSE); | |
4100 | ||
4101 | case KEY_closedir: | |
4102 | UNI(OP_CLOSEDIR); | |
4103 | ||
4104 | case KEY_cmp: | |
4105 | Eop(OP_SCMP); | |
4106 | ||
4107 | case KEY_caller: | |
4108 | UNI(OP_CALLER); | |
4109 | ||
4110 | case KEY_crypt: | |
4111 | #ifdef FCRYPT | |
f4c556ac GS |
4112 | if (!PL_cryptseen) { |
4113 | PL_cryptseen = TRUE; | |
de3bb511 | 4114 | init_des(); |
f4c556ac | 4115 | } |
a687059c | 4116 | #endif |
a0d0e21e | 4117 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4118 | |
4119 | case KEY_chmod: | |
e476b1b5 | 4120 | if (ckWARN(WARN_CHMOD)) { |
3280af22 | 4121 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 4122 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4123 | Perl_warner(aTHX_ WARN_CHMOD, |
5a211162 | 4124 | "chmod() mode argument is missing initial 0"); |
748a9306 | 4125 | } |
a0d0e21e | 4126 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4127 | |
4128 | case KEY_chown: | |
a0d0e21e | 4129 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4130 | |
4131 | case KEY_connect: | |
a0d0e21e | 4132 | LOP(OP_CONNECT,XTERM); |
79072805 | 4133 | |
463ee0b2 LW |
4134 | case KEY_chr: |
4135 | UNI(OP_CHR); | |
4136 | ||
79072805 LW |
4137 | case KEY_cos: |
4138 | UNI(OP_COS); | |
4139 | ||
4140 | case KEY_chroot: | |
4141 | UNI(OP_CHROOT); | |
4142 | ||
4143 | case KEY_do: | |
4144 | s = skipspace(s); | |
4145 | if (*s == '{') | |
a0d0e21e | 4146 | PRETERMBLOCK(DO); |
79072805 | 4147 | if (*s != '\'') |
a0d0e21e | 4148 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 4149 | OPERATOR(DO); |
79072805 LW |
4150 | |
4151 | case KEY_die: | |
3280af22 | 4152 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4153 | LOP(OP_DIE,XTERM); |
79072805 LW |
4154 | |
4155 | case KEY_defined: | |
4156 | UNI(OP_DEFINED); | |
4157 | ||
4158 | case KEY_delete: | |
a0d0e21e | 4159 | UNI(OP_DELETE); |
79072805 LW |
4160 | |
4161 | case KEY_dbmopen: | |
a0d0e21e LW |
4162 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4163 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4164 | |
4165 | case KEY_dbmclose: | |
4166 | UNI(OP_DBMCLOSE); | |
4167 | ||
4168 | case KEY_dump: | |
a0d0e21e | 4169 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4170 | LOOPX(OP_DUMP); |
4171 | ||
4172 | case KEY_else: | |
4173 | PREBLOCK(ELSE); | |
4174 | ||
4175 | case KEY_elsif: | |
57843af0 | 4176 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4177 | OPERATOR(ELSIF); |
4178 | ||
4179 | case KEY_eq: | |
4180 | Eop(OP_SEQ); | |
4181 | ||
a0d0e21e LW |
4182 | case KEY_exists: |
4183 | UNI(OP_EXISTS); | |
4184 | ||
79072805 LW |
4185 | case KEY_exit: |
4186 | UNI(OP_EXIT); | |
4187 | ||
4188 | case KEY_eval: | |
79072805 | 4189 | s = skipspace(s); |
3280af22 | 4190 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4191 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4192 | |
4193 | case KEY_eof: | |
4194 | UNI(OP_EOF); | |
4195 | ||
4196 | case KEY_exp: | |
4197 | UNI(OP_EXP); | |
4198 | ||
4199 | case KEY_each: | |
4200 | UNI(OP_EACH); | |
4201 | ||
4202 | case KEY_exec: | |
4203 | set_csh(); | |
a0d0e21e | 4204 | LOP(OP_EXEC,XREF); |
79072805 LW |
4205 | |
4206 | case KEY_endhostent: | |
4207 | FUN0(OP_EHOSTENT); | |
4208 | ||
4209 | case KEY_endnetent: | |
4210 | FUN0(OP_ENETENT); | |
4211 | ||
4212 | case KEY_endservent: | |
4213 | FUN0(OP_ESERVENT); | |
4214 | ||
4215 | case KEY_endprotoent: | |
4216 | FUN0(OP_EPROTOENT); | |
4217 | ||
4218 | case KEY_endpwent: | |
4219 | FUN0(OP_EPWENT); | |
4220 | ||
4221 | case KEY_endgrent: | |
4222 | FUN0(OP_EGRENT); | |
4223 | ||
4224 | case KEY_for: | |
4225 | case KEY_foreach: | |
57843af0 | 4226 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4227 | s = skipspace(s); |
7e2040f0 | 4228 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4229 | char *p = s; |
3280af22 | 4230 | if ((PL_bufend - p) >= 3 && |
55497cff | 4231 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4232 | p += 2; | |
77ca0c92 LW |
4233 | else if ((PL_bufend - p) >= 4 && |
4234 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4235 | p += 3; | |
55497cff | 4236 | p = skipspace(p); |
7e2040f0 | 4237 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4238 | p = scan_ident(p, PL_bufend, |
4239 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4240 | p = skipspace(p); | |
4241 | } | |
4242 | if (*p != '$') | |
cea2e8a9 | 4243 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4244 | } |
79072805 LW |
4245 | OPERATOR(FOR); |
4246 | ||
4247 | case KEY_formline: | |
a0d0e21e | 4248 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4249 | |
4250 | case KEY_fork: | |
4251 | FUN0(OP_FORK); | |
4252 | ||
4253 | case KEY_fcntl: | |
a0d0e21e | 4254 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4255 | |
4256 | case KEY_fileno: | |
4257 | UNI(OP_FILENO); | |
4258 | ||
4259 | case KEY_flock: | |
a0d0e21e | 4260 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4261 | |
4262 | case KEY_gt: | |
4263 | Rop(OP_SGT); | |
4264 | ||
4265 | case KEY_ge: | |
4266 | Rop(OP_SGE); | |
4267 | ||
4268 | case KEY_grep: | |
2c38e13d | 4269 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4270 | |
4271 | case KEY_goto: | |
a0d0e21e | 4272 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4273 | LOOPX(OP_GOTO); |
4274 | ||
4275 | case KEY_gmtime: | |
4276 | UNI(OP_GMTIME); | |
4277 | ||
4278 | case KEY_getc: | |
4279 | UNI(OP_GETC); | |
4280 | ||
4281 | case KEY_getppid: | |
4282 | FUN0(OP_GETPPID); | |
4283 | ||
4284 | case KEY_getpgrp: | |
4285 | UNI(OP_GETPGRP); | |
4286 | ||
4287 | case KEY_getpriority: | |
a0d0e21e | 4288 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4289 | |
4290 | case KEY_getprotobyname: | |
4291 | UNI(OP_GPBYNAME); | |
4292 | ||
4293 | case KEY_getprotobynumber: | |
a0d0e21e | 4294 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4295 | |
4296 | case KEY_getprotoent: | |
4297 | FUN0(OP_GPROTOENT); | |
4298 | ||
4299 | case KEY_getpwent: | |
4300 | FUN0(OP_GPWENT); | |
4301 | ||
4302 | case KEY_getpwnam: | |
ff68c719 | 4303 | UNI(OP_GPWNAM); |
79072805 LW |
4304 | |
4305 | case KEY_getpwuid: | |
ff68c719 | 4306 | UNI(OP_GPWUID); |
79072805 LW |
4307 | |
4308 | case KEY_getpeername: | |
4309 | UNI(OP_GETPEERNAME); | |
4310 | ||
4311 | case KEY_gethostbyname: | |
4312 | UNI(OP_GHBYNAME); | |
4313 | ||
4314 | case KEY_gethostbyaddr: | |
a0d0e21e | 4315 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4316 | |
4317 | case KEY_gethostent: | |
4318 | FUN0(OP_GHOSTENT); | |
4319 | ||
4320 | case KEY_getnetbyname: | |
4321 | UNI(OP_GNBYNAME); | |
4322 | ||
4323 | case KEY_getnetbyaddr: | |
a0d0e21e | 4324 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4325 | |
4326 | case KEY_getnetent: | |
4327 | FUN0(OP_GNETENT); | |
4328 | ||
4329 | case KEY_getservbyname: | |
a0d0e21e | 4330 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4331 | |
4332 | case KEY_getservbyport: | |
a0d0e21e | 4333 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4334 | |
4335 | case KEY_getservent: | |
4336 | FUN0(OP_GSERVENT); | |
4337 | ||
4338 | case KEY_getsockname: | |
4339 | UNI(OP_GETSOCKNAME); | |
4340 | ||
4341 | case KEY_getsockopt: | |
a0d0e21e | 4342 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4343 | |
4344 | case KEY_getgrent: | |
4345 | FUN0(OP_GGRENT); | |
4346 | ||
4347 | case KEY_getgrnam: | |
ff68c719 | 4348 | UNI(OP_GGRNAM); |
79072805 LW |
4349 | |
4350 | case KEY_getgrgid: | |
ff68c719 | 4351 | UNI(OP_GGRGID); |
79072805 LW |
4352 | |
4353 | case KEY_getlogin: | |
4354 | FUN0(OP_GETLOGIN); | |
4355 | ||
93a17b20 | 4356 | case KEY_glob: |
a0d0e21e LW |
4357 | set_csh(); |
4358 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4359 | |
79072805 LW |
4360 | case KEY_hex: |
4361 | UNI(OP_HEX); | |
4362 | ||
4363 | case KEY_if: | |
57843af0 | 4364 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4365 | OPERATOR(IF); |
4366 | ||
4367 | case KEY_index: | |
a0d0e21e | 4368 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4369 | |
4370 | case KEY_int: | |
4371 | UNI(OP_INT); | |
4372 | ||
4373 | case KEY_ioctl: | |
a0d0e21e | 4374 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4375 | |
4376 | case KEY_join: | |
a0d0e21e | 4377 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4378 | |
4379 | case KEY_keys: | |
4380 | UNI(OP_KEYS); | |
4381 | ||
4382 | case KEY_kill: | |
a0d0e21e | 4383 | LOP(OP_KILL,XTERM); |
79072805 LW |
4384 | |
4385 | case KEY_last: | |
a0d0e21e | 4386 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4387 | LOOPX(OP_LAST); |
a0d0e21e | 4388 | |
79072805 LW |
4389 | case KEY_lc: |
4390 | UNI(OP_LC); | |
4391 | ||
4392 | case KEY_lcfirst: | |
4393 | UNI(OP_LCFIRST); | |
4394 | ||
4395 | case KEY_local: | |
09bef843 | 4396 | yylval.ival = 0; |
79072805 LW |
4397 | OPERATOR(LOCAL); |
4398 | ||
4399 | case KEY_length: | |
4400 | UNI(OP_LENGTH); | |
4401 | ||
4402 | case KEY_lt: | |
4403 | Rop(OP_SLT); | |
4404 | ||
4405 | case KEY_le: | |
4406 | Rop(OP_SLE); | |
4407 | ||
4408 | case KEY_localtime: | |
4409 | UNI(OP_LOCALTIME); | |
4410 | ||
4411 | case KEY_log: | |
4412 | UNI(OP_LOG); | |
4413 | ||
4414 | case KEY_link: | |
a0d0e21e | 4415 | LOP(OP_LINK,XTERM); |
79072805 LW |
4416 | |
4417 | case KEY_listen: | |
a0d0e21e | 4418 | LOP(OP_LISTEN,XTERM); |
79072805 | 4419 | |
c0329465 MB |
4420 | case KEY_lock: |
4421 | UNI(OP_LOCK); | |
4422 | ||
79072805 LW |
4423 | case KEY_lstat: |
4424 | UNI(OP_LSTAT); | |
4425 | ||
4426 | case KEY_m: | |
8782bef2 | 4427 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4428 | TERM(sublex_start()); |
4429 | ||
a0d0e21e | 4430 | case KEY_map: |
2c38e13d | 4431 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4432 | |
79072805 | 4433 | case KEY_mkdir: |
a0d0e21e | 4434 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4435 | |
4436 | case KEY_msgctl: | |
a0d0e21e | 4437 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4438 | |
4439 | case KEY_msgget: | |
a0d0e21e | 4440 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4441 | |
4442 | case KEY_msgrcv: | |
a0d0e21e | 4443 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4444 | |
4445 | case KEY_msgsnd: | |
a0d0e21e | 4446 | LOP(OP_MSGSND,XTERM); |
79072805 | 4447 | |
77ca0c92 | 4448 | case KEY_our: |
93a17b20 | 4449 | case KEY_my: |
77ca0c92 | 4450 | PL_in_my = tmp; |
c750a3ec | 4451 | s = skipspace(s); |
7e2040f0 | 4452 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4453 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4454 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4455 | goto really_sub; | |
def3634b | 4456 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4457 | if (!PL_in_my_stash) { |
c750a3ec | 4458 | char tmpbuf[1024]; |
3280af22 NIS |
4459 | PL_bufptr = s; |
4460 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4461 | yyerror(tmpbuf); |
4462 | } | |
4463 | } | |
09bef843 | 4464 | yylval.ival = 1; |
55497cff | 4465 | OPERATOR(MY); |
93a17b20 | 4466 | |
79072805 | 4467 | case KEY_next: |
a0d0e21e | 4468 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4469 | LOOPX(OP_NEXT); |
4470 | ||
4471 | case KEY_ne: | |
4472 | Eop(OP_SNE); | |
4473 | ||
a0d0e21e | 4474 | case KEY_no: |
3280af22 | 4475 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4476 | yyerror("\"no\" not allowed in expression"); |
4477 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4478 | s = force_version(s); |
a0d0e21e LW |
4479 | yylval.ival = 0; |
4480 | OPERATOR(USE); | |
4481 | ||
4482 | case KEY_not: | |
2d2e263d LW |
4483 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4484 | FUN1(OP_NOT); | |
4485 | else | |
4486 | OPERATOR(NOTOP); | |
a0d0e21e | 4487 | |
79072805 | 4488 | case KEY_open: |
93a17b20 | 4489 | s = skipspace(s); |
7e2040f0 | 4490 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4491 | char *t; |
7e2040f0 | 4492 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4493 | t = skipspace(d); |
e476b1b5 GS |
4494 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4495 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4496 | "Precedence problem: open %.*s should be open(%.*s)", |
4497 | d-s,s, d-s,s); | |
93a17b20 | 4498 | } |
a0d0e21e | 4499 | LOP(OP_OPEN,XTERM); |
79072805 | 4500 | |
463ee0b2 | 4501 | case KEY_or: |
a0d0e21e | 4502 | yylval.ival = OP_OR; |
463ee0b2 LW |
4503 | OPERATOR(OROP); |
4504 | ||
79072805 LW |
4505 | case KEY_ord: |
4506 | UNI(OP_ORD); | |
4507 | ||
4508 | case KEY_oct: | |
4509 | UNI(OP_OCT); | |
4510 | ||
4511 | case KEY_opendir: | |
a0d0e21e | 4512 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4513 | |
4514 | case KEY_print: | |
3280af22 | 4515 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4516 | LOP(OP_PRINT,XREF); |
79072805 LW |
4517 | |
4518 | case KEY_printf: | |
3280af22 | 4519 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4520 | LOP(OP_PRTF,XREF); |
79072805 | 4521 | |
c07a80fd | 4522 | case KEY_prototype: |
4523 | UNI(OP_PROTOTYPE); | |
4524 | ||
79072805 | 4525 | case KEY_push: |
a0d0e21e | 4526 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4527 | |
4528 | case KEY_pop: | |
4529 | UNI(OP_POP); | |
4530 | ||
a0d0e21e LW |
4531 | case KEY_pos: |
4532 | UNI(OP_POS); | |
4533 | ||
79072805 | 4534 | case KEY_pack: |
a0d0e21e | 4535 | LOP(OP_PACK,XTERM); |
79072805 LW |
4536 | |
4537 | case KEY_package: | |
a0d0e21e | 4538 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4539 | OPERATOR(PACKAGE); |
4540 | ||
4541 | case KEY_pipe: | |
a0d0e21e | 4542 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4543 | |
4544 | case KEY_q: | |
09bef843 | 4545 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4546 | if (!s) |
85e6fe83 | 4547 | missingterm((char*)0); |
79072805 LW |
4548 | yylval.ival = OP_CONST; |
4549 | TERM(sublex_start()); | |
4550 | ||
a0d0e21e LW |
4551 | case KEY_quotemeta: |
4552 | UNI(OP_QUOTEMETA); | |
4553 | ||
8990e307 | 4554 | case KEY_qw: |
09bef843 | 4555 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4556 | if (!s) |
85e6fe83 | 4557 | missingterm((char*)0); |
8127e0e3 GS |
4558 | force_next(')'); |
4559 | if (SvCUR(PL_lex_stuff)) { | |
4560 | OP *words = Nullop; | |
4561 | int warned = 0; | |
3280af22 | 4562 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4563 | while (len) { |
4564 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4565 | if (len) { | |
4566 | char *b = d; | |
e476b1b5 | 4567 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4568 | for (; !isSPACE(*d) && len; --len, ++d) { |
4569 | if (*d == ',') { | |
e476b1b5 | 4570 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4571 | "Possible attempt to separate words with commas"); |
4572 | ++warned; | |
4573 | } | |
4574 | else if (*d == '#') { | |
e476b1b5 | 4575 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4576 | "Possible attempt to put comments in qw() list"); |
4577 | ++warned; | |
4578 | } | |
4579 | } | |
4580 | } | |
4581 | else { | |
4582 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4583 | } | |
4584 | words = append_elem(OP_LIST, words, | |
3201ebbd | 4585 | newSVOP(OP_CONST, 0, tokeq(newSVpvn(b, d-b)))); |
55497cff | 4586 | } |
4587 | } | |
8127e0e3 GS |
4588 | if (words) { |
4589 | PL_nextval[PL_nexttoke].opval = words; | |
4590 | force_next(THING); | |
4591 | } | |
55497cff | 4592 | } |
8127e0e3 GS |
4593 | if (PL_lex_stuff) |
4594 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4595 | PL_lex_stuff = Nullsv; |
3280af22 | 4596 | PL_expect = XTERM; |
8127e0e3 | 4597 | TOKEN('('); |
8990e307 | 4598 | |
79072805 | 4599 | case KEY_qq: |
09bef843 | 4600 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4601 | if (!s) |
85e6fe83 | 4602 | missingterm((char*)0); |
a0d0e21e | 4603 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4604 | if (SvIVX(PL_lex_stuff) == '\'') |
4605 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4606 | TERM(sublex_start()); |
4607 | ||
8782bef2 GB |
4608 | case KEY_qr: |
4609 | s = scan_pat(s,OP_QR); | |
4610 | TERM(sublex_start()); | |
4611 | ||
79072805 | 4612 | case KEY_qx: |
09bef843 | 4613 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4614 | if (!s) |
85e6fe83 | 4615 | missingterm((char*)0); |
79072805 LW |
4616 | yylval.ival = OP_BACKTICK; |
4617 | set_csh(); | |
4618 | TERM(sublex_start()); | |
4619 | ||
4620 | case KEY_return: | |
4621 | OLDLOP(OP_RETURN); | |
4622 | ||
4623 | case KEY_require: | |
a7cb1f99 GS |
4624 | s = skipspace(s); |
4625 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4626 | s = force_version(s); | |
4627 | } | |
4628 | else { | |
4629 | *PL_tokenbuf = '\0'; | |
4630 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4631 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4632 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4633 | else if (*s == '<') | |
4634 | yyerror("<> should be quotes"); | |
4635 | } | |
463ee0b2 | 4636 | UNI(OP_REQUIRE); |
79072805 LW |
4637 | |
4638 | case KEY_reset: | |
4639 | UNI(OP_RESET); | |
4640 | ||
4641 | case KEY_redo: | |
a0d0e21e | 4642 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4643 | LOOPX(OP_REDO); |
4644 | ||
4645 | case KEY_rename: | |
a0d0e21e | 4646 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4647 | |
4648 | case KEY_rand: | |
4649 | UNI(OP_RAND); | |
4650 | ||
4651 | case KEY_rmdir: | |
4652 | UNI(OP_RMDIR); | |
4653 | ||
4654 | case KEY_rindex: | |
a0d0e21e | 4655 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4656 | |
4657 | case KEY_read: | |
a0d0e21e | 4658 | LOP(OP_READ,XTERM); |
79072805 LW |
4659 | |
4660 | case KEY_readdir: | |
4661 | UNI(OP_READDIR); | |
4662 | ||
93a17b20 LW |
4663 | case KEY_readline: |
4664 | set_csh(); | |
4665 | UNI(OP_READLINE); | |
4666 | ||
4667 | case KEY_readpipe: | |
4668 | set_csh(); | |
4669 | UNI(OP_BACKTICK); | |
4670 | ||
79072805 LW |
4671 | case KEY_rewinddir: |
4672 | UNI(OP_REWINDDIR); | |
4673 | ||
4674 | case KEY_recv: | |
a0d0e21e | 4675 | LOP(OP_RECV,XTERM); |
79072805 LW |
4676 | |
4677 | case KEY_reverse: | |
a0d0e21e | 4678 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4679 | |
4680 | case KEY_readlink: | |
4681 | UNI(OP_READLINK); | |
4682 | ||
4683 | case KEY_ref: | |
4684 | UNI(OP_REF); | |
4685 | ||
4686 | case KEY_s: | |
4687 | s = scan_subst(s); | |
4688 | if (yylval.opval) | |
4689 | TERM(sublex_start()); | |
4690 | else | |
4691 | TOKEN(1); /* force error */ | |
4692 | ||
a0d0e21e LW |
4693 | case KEY_chomp: |
4694 | UNI(OP_CHOMP); | |
4695 | ||
79072805 LW |
4696 | case KEY_scalar: |
4697 | UNI(OP_SCALAR); | |
4698 | ||
4699 | case KEY_select: | |
a0d0e21e | 4700 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4701 | |
4702 | case KEY_seek: | |
a0d0e21e | 4703 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4704 | |
4705 | case KEY_semctl: | |
a0d0e21e | 4706 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4707 | |
4708 | case KEY_semget: | |
a0d0e21e | 4709 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4710 | |
4711 | case KEY_semop: | |
a0d0e21e | 4712 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4713 | |
4714 | case KEY_send: | |
a0d0e21e | 4715 | LOP(OP_SEND,XTERM); |
79072805 LW |
4716 | |
4717 | case KEY_setpgrp: | |
a0d0e21e | 4718 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4719 | |
4720 | case KEY_setpriority: | |
a0d0e21e | 4721 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4722 | |
4723 | case KEY_sethostent: | |
ff68c719 | 4724 | UNI(OP_SHOSTENT); |
79072805 LW |
4725 | |
4726 | case KEY_setnetent: | |
ff68c719 | 4727 | UNI(OP_SNETENT); |
79072805 LW |
4728 | |
4729 | case KEY_setservent: | |
ff68c719 | 4730 | UNI(OP_SSERVENT); |
79072805 LW |
4731 | |
4732 | case KEY_setprotoent: | |
ff68c719 | 4733 | UNI(OP_SPROTOENT); |
79072805 LW |
4734 | |
4735 | case KEY_setpwent: | |
4736 | FUN0(OP_SPWENT); | |
4737 | ||
4738 | case KEY_setgrent: | |
4739 | FUN0(OP_SGRENT); | |
4740 | ||
4741 | case KEY_seekdir: | |
a0d0e21e | 4742 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4743 | |
4744 | case KEY_setsockopt: | |
a0d0e21e | 4745 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4746 | |
4747 | case KEY_shift: | |
4748 | UNI(OP_SHIFT); | |
4749 | ||
4750 | case KEY_shmctl: | |
a0d0e21e | 4751 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4752 | |
4753 | case KEY_shmget: | |
a0d0e21e | 4754 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4755 | |
4756 | case KEY_shmread: | |
a0d0e21e | 4757 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4758 | |
4759 | case KEY_shmwrite: | |
a0d0e21e | 4760 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4761 | |
4762 | case KEY_shutdown: | |
a0d0e21e | 4763 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4764 | |
4765 | case KEY_sin: | |
4766 | UNI(OP_SIN); | |
4767 | ||
4768 | case KEY_sleep: | |
4769 | UNI(OP_SLEEP); | |
4770 | ||
4771 | case KEY_socket: | |
a0d0e21e | 4772 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4773 | |
4774 | case KEY_socketpair: | |
a0d0e21e | 4775 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4776 | |
4777 | case KEY_sort: | |
3280af22 | 4778 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4779 | s = skipspace(s); |
4780 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4781 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4782 | PL_expect = XTERM; |
15f0808c | 4783 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4784 | LOP(OP_SORT,XREF); |
79072805 LW |
4785 | |
4786 | case KEY_split: | |
a0d0e21e | 4787 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4788 | |
4789 | case KEY_sprintf: | |
a0d0e21e | 4790 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4791 | |
4792 | case KEY_splice: | |
a0d0e21e | 4793 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4794 | |
4795 | case KEY_sqrt: | |
4796 | UNI(OP_SQRT); | |
4797 | ||
4798 | case KEY_srand: | |
4799 | UNI(OP_SRAND); | |
4800 | ||
4801 | case KEY_stat: | |
4802 | UNI(OP_STAT); | |
4803 | ||
4804 | case KEY_study: | |
79072805 LW |
4805 | UNI(OP_STUDY); |
4806 | ||
4807 | case KEY_substr: | |
a0d0e21e | 4808 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4809 | |
4810 | case KEY_format: | |
4811 | case KEY_sub: | |
93a17b20 | 4812 | really_sub: |
09bef843 | 4813 | { |
3280af22 | 4814 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4815 | SSize_t tboffset; |
09bef843 SB |
4816 | expectation attrful; |
4817 | bool have_name, have_proto; | |
4818 | int key = tmp; | |
4819 | ||
4820 | s = skipspace(s); | |
4821 | ||
7e2040f0 | 4822 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4823 | (*s == ':' && s[1] == ':')) |
4824 | { | |
4825 | PL_expect = XBLOCK; | |
4826 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4827 | /* remember buffer pos'n for later force_word */ |
4828 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4829 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4830 | if (strchr(tmpbuf, ':')) | |
4831 | sv_setpv(PL_subname, tmpbuf); | |
4832 | else { | |
4833 | sv_setsv(PL_subname,PL_curstname); | |
4834 | sv_catpvn(PL_subname,"::",2); | |
4835 | sv_catpvn(PL_subname,tmpbuf,len); | |
4836 | } | |
4837 | s = skipspace(d); | |
4838 | have_name = TRUE; | |
4839 | } | |
463ee0b2 | 4840 | else { |
09bef843 SB |
4841 | if (key == KEY_my) |
4842 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4843 | PL_expect = XTERMBLOCK; | |
4844 | attrful = XATTRTERM; | |
4845 | sv_setpv(PL_subname,"?"); | |
4846 | have_name = FALSE; | |
463ee0b2 | 4847 | } |
4633a7c4 | 4848 | |
09bef843 SB |
4849 | if (key == KEY_format) { |
4850 | if (*s == '=') | |
4851 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4852 | if (have_name) | |
b1b65b59 JH |
4853 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4854 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4855 | OPERATOR(FORMAT); |
4856 | } | |
79072805 | 4857 | |
09bef843 SB |
4858 | /* Look for a prototype */ |
4859 | if (*s == '(') { | |
4860 | char *p; | |
4861 | ||
4862 | s = scan_str(s,FALSE,FALSE); | |
4863 | if (!s) { | |
4864 | if (PL_lex_stuff) | |
4865 | SvREFCNT_dec(PL_lex_stuff); | |
4866 | PL_lex_stuff = Nullsv; | |
4867 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4868 | } | |
4869 | /* strip spaces */ | |
4870 | d = SvPVX(PL_lex_stuff); | |
4871 | tmp = 0; | |
4872 | for (p = d; *p; ++p) { | |
4873 | if (!isSPACE(*p)) | |
4874 | d[tmp++] = *p; | |
4875 | } | |
4876 | d[tmp] = '\0'; | |
4877 | SvCUR(PL_lex_stuff) = tmp; | |
4878 | have_proto = TRUE; | |
68dc0745 | 4879 | |
09bef843 | 4880 | s = skipspace(s); |
4633a7c4 | 4881 | } |
09bef843 SB |
4882 | else |
4883 | have_proto = FALSE; | |
4884 | ||
4885 | if (*s == ':' && s[1] != ':') | |
4886 | PL_expect = attrful; | |
4887 | ||
4888 | if (have_proto) { | |
b1b65b59 JH |
4889 | PL_nextval[PL_nexttoke].opval = |
4890 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4891 | PL_lex_stuff = Nullsv; |
4892 | force_next(THING); | |
68dc0745 | 4893 | } |
09bef843 SB |
4894 | if (!have_name) { |
4895 | sv_setpv(PL_subname,"__ANON__"); | |
4896 | TOKEN(ANONSUB); | |
4633a7c4 | 4897 | } |
b1b65b59 JH |
4898 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4899 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4900 | if (key == KEY_my) |
4901 | TOKEN(MYSUB); | |
4902 | TOKEN(SUB); | |
4633a7c4 | 4903 | } |
79072805 LW |
4904 | |
4905 | case KEY_system: | |
4906 | set_csh(); | |
a0d0e21e | 4907 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4908 | |
4909 | case KEY_symlink: | |
a0d0e21e | 4910 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4911 | |
4912 | case KEY_syscall: | |
a0d0e21e | 4913 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4914 | |
c07a80fd | 4915 | case KEY_sysopen: |
4916 | LOP(OP_SYSOPEN,XTERM); | |
4917 | ||
137443ea | 4918 | case KEY_sysseek: |
4919 | LOP(OP_SYSSEEK,XTERM); | |
4920 | ||
79072805 | 4921 | case KEY_sysread: |
a0d0e21e | 4922 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4923 | |
4924 | case KEY_syswrite: | |
a0d0e21e | 4925 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4926 | |
4927 | case KEY_tr: | |
4928 | s = scan_trans(s); | |
4929 | TERM(sublex_start()); | |
4930 | ||
4931 | case KEY_tell: | |
4932 | UNI(OP_TELL); | |
4933 | ||
4934 | case KEY_telldir: | |
4935 | UNI(OP_TELLDIR); | |
4936 | ||
463ee0b2 | 4937 | case KEY_tie: |
a0d0e21e | 4938 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4939 | |
c07a80fd | 4940 | case KEY_tied: |
4941 | UNI(OP_TIED); | |
4942 | ||
79072805 LW |
4943 | case KEY_time: |
4944 | FUN0(OP_TIME); | |
4945 | ||
4946 | case KEY_times: | |
4947 | FUN0(OP_TMS); | |
4948 | ||
4949 | case KEY_truncate: | |
a0d0e21e | 4950 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4951 | |
4952 | case KEY_uc: | |
4953 | UNI(OP_UC); | |
4954 | ||
4955 | case KEY_ucfirst: | |
4956 | UNI(OP_UCFIRST); | |
4957 | ||
463ee0b2 LW |
4958 | case KEY_untie: |
4959 | UNI(OP_UNTIE); | |
4960 | ||
79072805 | 4961 | case KEY_until: |
57843af0 | 4962 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4963 | OPERATOR(UNTIL); |
4964 | ||
4965 | case KEY_unless: | |
57843af0 | 4966 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4967 | OPERATOR(UNLESS); |
4968 | ||
4969 | case KEY_unlink: | |
a0d0e21e | 4970 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4971 | |
4972 | case KEY_undef: | |
4973 | UNI(OP_UNDEF); | |
4974 | ||
4975 | case KEY_unpack: | |
a0d0e21e | 4976 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4977 | |
4978 | case KEY_utime: | |
a0d0e21e | 4979 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4980 | |
4981 | case KEY_umask: | |
e476b1b5 | 4982 | if (ckWARN(WARN_UMASK)) { |
3280af22 | 4983 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 | 4984 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4985 | Perl_warner(aTHX_ WARN_UMASK, |
4438c4b7 | 4986 | "umask: argument is missing initial 0"); |
748a9306 | 4987 | } |
79072805 LW |
4988 | UNI(OP_UMASK); |
4989 | ||
4990 | case KEY_unshift: | |
a0d0e21e LW |
4991 | LOP(OP_UNSHIFT,XTERM); |
4992 | ||
4993 | case KEY_use: | |
3280af22 | 4994 | if (PL_expect != XSTATE) |
a0d0e21e | 4995 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4996 | s = skipspace(s); |
a7cb1f99 | 4997 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4998 | s = force_version(s); |
a7cb1f99 | 4999 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5000 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5001 | force_next(WORD); |
5002 | } | |
5003 | } | |
5004 | else { | |
5005 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5006 | s = force_version(s); | |
5007 | } | |
a0d0e21e LW |
5008 | yylval.ival = 1; |
5009 | OPERATOR(USE); | |
79072805 LW |
5010 | |
5011 | case KEY_values: | |
5012 | UNI(OP_VALUES); | |
5013 | ||
5014 | case KEY_vec: | |
a0d0e21e | 5015 | LOP(OP_VEC,XTERM); |
79072805 LW |
5016 | |
5017 | case KEY_while: | |
57843af0 | 5018 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5019 | OPERATOR(WHILE); |
5020 | ||
5021 | case KEY_warn: | |
3280af22 | 5022 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5023 | LOP(OP_WARN,XTERM); |
79072805 LW |
5024 | |
5025 | case KEY_wait: | |
5026 | FUN0(OP_WAIT); | |
5027 | ||
5028 | case KEY_waitpid: | |
a0d0e21e | 5029 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5030 | |
5031 | case KEY_wantarray: | |
5032 | FUN0(OP_WANTARRAY); | |
5033 | ||
5034 | case KEY_write: | |
9d116dd7 JH |
5035 | #ifdef EBCDIC |
5036 | { | |
5037 | static char ctl_l[2]; | |
5038 | ||
5039 | if (ctl_l[0] == '\0') | |
5040 | ctl_l[0] = toCTRL('L'); | |
5041 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
5042 | } | |
5043 | #else | |
5044 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5045 | #endif | |
79072805 LW |
5046 | UNI(OP_ENTERWRITE); |
5047 | ||
5048 | case KEY_x: | |
3280af22 | 5049 | if (PL_expect == XOPERATOR) |
79072805 LW |
5050 | Mop(OP_REPEAT); |
5051 | check_uni(); | |
5052 | goto just_a_word; | |
5053 | ||
a0d0e21e LW |
5054 | case KEY_xor: |
5055 | yylval.ival = OP_XOR; | |
5056 | OPERATOR(OROP); | |
5057 | ||
79072805 LW |
5058 | case KEY_y: |
5059 | s = scan_trans(s); | |
5060 | TERM(sublex_start()); | |
5061 | } | |
49dc05e3 | 5062 | }} |
79072805 | 5063 | } |
bf4acbe4 GS |
5064 | #ifdef __SC__ |
5065 | #pragma segment Main | |
5066 | #endif | |
79072805 LW |
5067 | |
5068 | I32 | |
864dbfa3 | 5069 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5070 | { |
5071 | switch (*d) { | |
5072 | case '_': | |
5073 | if (d[1] == '_') { | |
a0d0e21e | 5074 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5075 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5076 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5077 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5078 | if (strEQ(d,"__END__")) return KEY___END__; |
5079 | } | |
5080 | break; | |
8990e307 LW |
5081 | case 'A': |
5082 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5083 | break; | |
79072805 | 5084 | case 'a': |
463ee0b2 LW |
5085 | switch (len) { |
5086 | case 3: | |
a0d0e21e LW |
5087 | if (strEQ(d,"and")) return -KEY_and; |
5088 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5089 | break; |
463ee0b2 | 5090 | case 5: |
a0d0e21e LW |
5091 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5092 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5093 | break; |
5094 | case 6: | |
a0d0e21e | 5095 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5096 | break; |
5097 | } | |
79072805 LW |
5098 | break; |
5099 | case 'B': | |
5100 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5101 | break; |
79072805 | 5102 | case 'b': |
a0d0e21e LW |
5103 | if (strEQ(d,"bless")) return -KEY_bless; |
5104 | if (strEQ(d,"bind")) return -KEY_bind; | |
5105 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5106 | break; | |
5107 | case 'C': | |
5108 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5109 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5110 | break; |
5111 | case 'c': | |
5112 | switch (len) { | |
5113 | case 3: | |
a0d0e21e LW |
5114 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5115 | if (strEQ(d,"chr")) return -KEY_chr; | |
5116 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5117 | break; |
5118 | case 4: | |
5119 | if (strEQ(d,"chop")) return KEY_chop; | |
5120 | break; | |
5121 | case 5: | |
a0d0e21e LW |
5122 | if (strEQ(d,"close")) return -KEY_close; |
5123 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
5124 | if (strEQ(d,"chomp")) return KEY_chomp; | |
5125 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
5126 | if (strEQ(d,"chown")) return -KEY_chown; | |
5127 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5128 | break; |
5129 | case 6: | |
a0d0e21e LW |
5130 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5131 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5132 | break; |
5133 | case 7: | |
a0d0e21e | 5134 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5135 | break; |
5136 | case 8: | |
a0d0e21e LW |
5137 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5138 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5139 | break; |
5140 | } | |
5141 | break; | |
ed6116ce LW |
5142 | case 'D': |
5143 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5144 | break; | |
79072805 LW |
5145 | case 'd': |
5146 | switch (len) { | |
5147 | case 2: | |
5148 | if (strEQ(d,"do")) return KEY_do; | |
5149 | break; | |
5150 | case 3: | |
a0d0e21e | 5151 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5152 | break; |
5153 | case 4: | |
a0d0e21e | 5154 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5155 | break; |
5156 | case 6: | |
5157 | if (strEQ(d,"delete")) return KEY_delete; | |
5158 | break; | |
5159 | case 7: | |
5160 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5161 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5162 | break; |
5163 | case 8: | |
a0d0e21e | 5164 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5165 | break; |
5166 | } | |
5167 | break; | |
5168 | case 'E': | |
a0d0e21e | 5169 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
5170 | if (strEQ(d,"END")) return KEY_END; |
5171 | break; | |
5172 | case 'e': | |
5173 | switch (len) { | |
5174 | case 2: | |
a0d0e21e | 5175 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5176 | break; |
5177 | case 3: | |
a0d0e21e LW |
5178 | if (strEQ(d,"eof")) return -KEY_eof; |
5179 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5180 | break; |
5181 | case 4: | |
5182 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5183 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5184 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5185 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
5186 | if (strEQ(d,"each")) return KEY_each; |
5187 | break; | |
5188 | case 5: | |
5189 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5190 | break; | |
a0d0e21e LW |
5191 | case 6: |
5192 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5193 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5194 | break; |
79072805 | 5195 | case 8: |
a0d0e21e LW |
5196 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5197 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5198 | break; |
5199 | case 9: | |
a0d0e21e | 5200 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5201 | break; |
5202 | case 10: | |
a0d0e21e LW |
5203 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5204 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5205 | break; |
5206 | case 11: | |
a0d0e21e | 5207 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5208 | break; |
a687059c | 5209 | } |
a687059c | 5210 | break; |
79072805 LW |
5211 | case 'f': |
5212 | switch (len) { | |
5213 | case 3: | |
5214 | if (strEQ(d,"for")) return KEY_for; | |
5215 | break; | |
5216 | case 4: | |
a0d0e21e | 5217 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5218 | break; |
5219 | case 5: | |
a0d0e21e LW |
5220 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5221 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5222 | break; |
5223 | case 6: | |
5224 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5225 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5226 | break; |
5227 | case 7: | |
5228 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5229 | break; | |
5230 | case 8: | |
a0d0e21e | 5231 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5232 | break; |
378cc40b | 5233 | } |
a687059c | 5234 | break; |
79072805 LW |
5235 | case 'G': |
5236 | if (len == 2) { | |
a0d0e21e LW |
5237 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5238 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5239 | } |
a687059c | 5240 | break; |
79072805 | 5241 | case 'g': |
a687059c LW |
5242 | if (strnEQ(d,"get",3)) { |
5243 | d += 3; | |
5244 | if (*d == 'p') { | |
79072805 LW |
5245 | switch (len) { |
5246 | case 7: | |
a0d0e21e LW |
5247 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5248 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5249 | break; |
5250 | case 8: | |
a0d0e21e LW |
5251 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5252 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5253 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5254 | break; |
5255 | case 11: | |
a0d0e21e LW |
5256 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5257 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5258 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5259 | break; |
5260 | case 14: | |
a0d0e21e | 5261 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5262 | break; |
5263 | case 16: | |
a0d0e21e | 5264 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5265 | break; |
5266 | } | |
a687059c LW |
5267 | } |
5268 | else if (*d == 'h') { | |
a0d0e21e LW |
5269 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5270 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5271 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5272 | } |
5273 | else if (*d == 'n') { | |
a0d0e21e LW |
5274 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5275 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5276 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5277 | } |
5278 | else if (*d == 's') { | |
a0d0e21e LW |
5279 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5280 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5281 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5282 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5283 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5284 | } |
5285 | else if (*d == 'g') { | |
a0d0e21e LW |
5286 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5287 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5288 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5289 | } |
5290 | else if (*d == 'l') { | |
a0d0e21e | 5291 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5292 | } |
a0d0e21e | 5293 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5294 | break; |
a687059c | 5295 | } |
79072805 LW |
5296 | switch (len) { |
5297 | case 2: | |
a0d0e21e LW |
5298 | if (strEQ(d,"gt")) return -KEY_gt; |
5299 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5300 | break; |
5301 | case 4: | |
5302 | if (strEQ(d,"grep")) return KEY_grep; | |
5303 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5304 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5305 | break; |
5306 | case 6: | |
a0d0e21e | 5307 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5308 | break; |
378cc40b | 5309 | } |
a687059c | 5310 | break; |
79072805 | 5311 | case 'h': |
a0d0e21e | 5312 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5313 | break; |
7d07dbc2 MB |
5314 | case 'I': |
5315 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5316 | break; | |
79072805 LW |
5317 | case 'i': |
5318 | switch (len) { | |
5319 | case 2: | |
5320 | if (strEQ(d,"if")) return KEY_if; | |
5321 | break; | |
5322 | case 3: | |
a0d0e21e | 5323 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5324 | break; |
5325 | case 5: | |
a0d0e21e LW |
5326 | if (strEQ(d,"index")) return -KEY_index; |
5327 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5328 | break; |
5329 | } | |
a687059c | 5330 | break; |
79072805 | 5331 | case 'j': |
a0d0e21e | 5332 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5333 | break; |
79072805 LW |
5334 | case 'k': |
5335 | if (len == 4) { | |
5336 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5337 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5338 | } |
79072805 LW |
5339 | break; |
5340 | case 'L': | |
5341 | if (len == 2) { | |
a0d0e21e LW |
5342 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5343 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5344 | } |
79072805 LW |
5345 | break; |
5346 | case 'l': | |
5347 | switch (len) { | |
5348 | case 2: | |
a0d0e21e LW |
5349 | if (strEQ(d,"lt")) return -KEY_lt; |
5350 | if (strEQ(d,"le")) return -KEY_le; | |
5351 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5352 | break; |
5353 | case 3: | |
a0d0e21e | 5354 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5355 | break; |
5356 | case 4: | |
5357 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5358 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5359 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5360 | break; |
79072805 LW |
5361 | case 5: |
5362 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5363 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5364 | break; |
5365 | case 6: | |
a0d0e21e LW |
5366 | if (strEQ(d,"length")) return -KEY_length; |
5367 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5368 | break; |
5369 | case 7: | |
a0d0e21e | 5370 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5371 | break; |
5372 | case 9: | |
a0d0e21e | 5373 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5374 | break; |
5375 | } | |
a687059c | 5376 | break; |
79072805 LW |
5377 | case 'm': |
5378 | switch (len) { | |
5379 | case 1: return KEY_m; | |
93a17b20 LW |
5380 | case 2: |
5381 | if (strEQ(d,"my")) return KEY_my; | |
5382 | break; | |
a0d0e21e LW |
5383 | case 3: |
5384 | if (strEQ(d,"map")) return KEY_map; | |
5385 | break; | |
79072805 | 5386 | case 5: |
a0d0e21e | 5387 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5388 | break; |
5389 | case 6: | |
a0d0e21e LW |
5390 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5391 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5392 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5393 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5394 | break; |
5395 | } | |
a687059c | 5396 | break; |
79072805 | 5397 | case 'N': |
a0d0e21e | 5398 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5399 | break; |
79072805 LW |
5400 | case 'n': |
5401 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5402 | if (strEQ(d,"ne")) return -KEY_ne; |
5403 | if (strEQ(d,"not")) return -KEY_not; | |
5404 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5405 | break; |
79072805 LW |
5406 | case 'o': |
5407 | switch (len) { | |
463ee0b2 | 5408 | case 2: |
a0d0e21e | 5409 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5410 | break; |
79072805 | 5411 | case 3: |
a0d0e21e LW |
5412 | if (strEQ(d,"ord")) return -KEY_ord; |
5413 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5414 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5415 | break; |
5416 | case 4: | |
a0d0e21e | 5417 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5418 | break; |
5419 | case 7: | |
a0d0e21e | 5420 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5421 | break; |
fe14fcc3 | 5422 | } |
a687059c | 5423 | break; |
79072805 LW |
5424 | case 'p': |
5425 | switch (len) { | |
5426 | case 3: | |
5427 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5428 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5429 | break; |
5430 | case 4: | |
5431 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5432 | if (strEQ(d,"pack")) return -KEY_pack; |
5433 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5434 | break; |
5435 | case 5: | |
5436 | if (strEQ(d,"print")) return KEY_print; | |
5437 | break; | |
5438 | case 6: | |
5439 | if (strEQ(d,"printf")) return KEY_printf; | |
5440 | break; | |
5441 | case 7: | |
5442 | if (strEQ(d,"package")) return KEY_package; | |
5443 | break; | |
c07a80fd | 5444 | case 9: |
5445 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5446 | } |
79072805 LW |
5447 | break; |
5448 | case 'q': | |
5449 | if (len <= 2) { | |
5450 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5451 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5452 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5453 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5454 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5455 | } |
a0d0e21e | 5456 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5457 | break; |
5458 | case 'r': | |
5459 | switch (len) { | |
5460 | case 3: | |
a0d0e21e | 5461 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5462 | break; |
5463 | case 4: | |
a0d0e21e LW |
5464 | if (strEQ(d,"read")) return -KEY_read; |
5465 | if (strEQ(d,"rand")) return -KEY_rand; | |
5466 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5467 | if (strEQ(d,"redo")) return KEY_redo; |
5468 | break; | |
5469 | case 5: | |
a0d0e21e LW |
5470 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5471 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5472 | break; |
5473 | case 6: | |
5474 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5475 | if (strEQ(d,"rename")) return -KEY_rename; |
5476 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5477 | break; |
5478 | case 7: | |
a0d0e21e LW |
5479 | if (strEQ(d,"require")) return -KEY_require; |
5480 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5481 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5482 | break; |
5483 | case 8: | |
a0d0e21e LW |
5484 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5485 | if (strEQ(d,"readline")) return -KEY_readline; | |
5486 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5487 | break; |
5488 | case 9: | |
a0d0e21e | 5489 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5490 | break; |
a687059c | 5491 | } |
79072805 LW |
5492 | break; |
5493 | case 's': | |
a687059c | 5494 | switch (d[1]) { |
79072805 | 5495 | case 0: return KEY_s; |
a687059c | 5496 | case 'c': |
79072805 | 5497 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5498 | break; |
5499 | case 'e': | |
79072805 LW |
5500 | switch (len) { |
5501 | case 4: | |
a0d0e21e LW |
5502 | if (strEQ(d,"seek")) return -KEY_seek; |
5503 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5504 | break; |
5505 | case 5: | |
a0d0e21e | 5506 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5507 | break; |
5508 | case 6: | |
a0d0e21e LW |
5509 | if (strEQ(d,"select")) return -KEY_select; |
5510 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5511 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5512 | break; |
5513 | case 7: | |
a0d0e21e LW |
5514 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5515 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5516 | break; |
5517 | case 8: | |
a0d0e21e LW |
5518 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5519 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5520 | break; |
5521 | case 9: | |
a0d0e21e | 5522 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5523 | break; |
5524 | case 10: | |
a0d0e21e LW |
5525 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5526 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5527 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5528 | break; |
5529 | case 11: | |
a0d0e21e LW |
5530 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5531 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5532 | break; |
5533 | } | |
a687059c LW |
5534 | break; |
5535 | case 'h': | |
79072805 LW |
5536 | switch (len) { |
5537 | case 5: | |
5538 | if (strEQ(d,"shift")) return KEY_shift; | |
5539 | break; | |
5540 | case 6: | |
a0d0e21e LW |
5541 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5542 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5543 | break; |
5544 | case 7: | |
a0d0e21e | 5545 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5546 | break; |
5547 | case 8: | |
a0d0e21e LW |
5548 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5549 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5550 | break; |
5551 | } | |
a687059c LW |
5552 | break; |
5553 | case 'i': | |
a0d0e21e | 5554 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5555 | break; |
5556 | case 'l': | |
a0d0e21e | 5557 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5558 | break; |
5559 | case 'o': | |
79072805 | 5560 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5561 | if (strEQ(d,"socket")) return -KEY_socket; |
5562 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5563 | break; |
5564 | case 'p': | |
79072805 | 5565 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5566 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5567 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5568 | break; |
5569 | case 'q': | |
a0d0e21e | 5570 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5571 | break; |
5572 | case 'r': | |
a0d0e21e | 5573 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5574 | break; |
5575 | case 't': | |
a0d0e21e | 5576 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5577 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5578 | break; |
5579 | case 'u': | |
a0d0e21e | 5580 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5581 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5582 | break; |
5583 | case 'y': | |
79072805 LW |
5584 | switch (len) { |
5585 | case 6: | |
a0d0e21e | 5586 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5587 | break; |
5588 | case 7: | |
a0d0e21e LW |
5589 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5590 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5591 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5592 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5593 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5594 | break; |
5595 | case 8: | |
a0d0e21e | 5596 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5597 | break; |
a687059c | 5598 | } |
a687059c LW |
5599 | break; |
5600 | } | |
5601 | break; | |
79072805 LW |
5602 | case 't': |
5603 | switch (len) { | |
5604 | case 2: | |
5605 | if (strEQ(d,"tr")) return KEY_tr; | |
5606 | break; | |
463ee0b2 LW |
5607 | case 3: |
5608 | if (strEQ(d,"tie")) return KEY_tie; | |
5609 | break; | |
79072805 | 5610 | case 4: |
a0d0e21e | 5611 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5612 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5613 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5614 | break; |
5615 | case 5: | |
a0d0e21e | 5616 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5617 | break; |
5618 | case 7: | |
a0d0e21e | 5619 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5620 | break; |
5621 | case 8: | |
a0d0e21e | 5622 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5623 | break; |
378cc40b | 5624 | } |
a687059c | 5625 | break; |
79072805 LW |
5626 | case 'u': |
5627 | switch (len) { | |
5628 | case 2: | |
a0d0e21e LW |
5629 | if (strEQ(d,"uc")) return -KEY_uc; |
5630 | break; | |
5631 | case 3: | |
5632 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5633 | break; |
5634 | case 5: | |
5635 | if (strEQ(d,"undef")) return KEY_undef; | |
5636 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5637 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5638 | if (strEQ(d,"utime")) return -KEY_utime; |
5639 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5640 | break; |
5641 | case 6: | |
5642 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5643 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5644 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5645 | break; |
5646 | case 7: | |
5647 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5648 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5649 | break; |
a687059c LW |
5650 | } |
5651 | break; | |
79072805 | 5652 | case 'v': |
a0d0e21e LW |
5653 | if (strEQ(d,"values")) return -KEY_values; |
5654 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5655 | break; |
79072805 LW |
5656 | case 'w': |
5657 | switch (len) { | |
5658 | case 4: | |
a0d0e21e LW |
5659 | if (strEQ(d,"warn")) return -KEY_warn; |
5660 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5661 | break; |
5662 | case 5: | |
5663 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5664 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5665 | break; |
5666 | case 7: | |
a0d0e21e | 5667 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5668 | break; |
5669 | case 9: | |
a0d0e21e | 5670 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5671 | break; |
2f3197b3 | 5672 | } |
a687059c | 5673 | break; |
79072805 | 5674 | case 'x': |
a0d0e21e LW |
5675 | if (len == 1) return -KEY_x; |
5676 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5677 | break; |
79072805 LW |
5678 | case 'y': |
5679 | if (len == 1) return KEY_y; | |
5680 | break; | |
5681 | case 'z': | |
a687059c LW |
5682 | break; |
5683 | } | |
79072805 | 5684 | return 0; |
a687059c LW |
5685 | } |
5686 | ||
76e3520e | 5687 | STATIC void |
cea2e8a9 | 5688 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5689 | { |
2f3197b3 LW |
5690 | char *w; |
5691 | ||
d008e5eb GS |
5692 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5693 | dTHR; /* only for ckWARN */ | |
5694 | if (ckWARN(WARN_SYNTAX)) { | |
5695 | int level = 1; | |
5696 | for (w = s+2; *w && level; w++) { | |
5697 | if (*w == '(') | |
5698 | ++level; | |
5699 | else if (*w == ')') | |
5700 | --level; | |
5701 | } | |
5702 | if (*w) | |
5703 | for (; *w && isSPACE(*w); w++) ; | |
5704 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5705 | Perl_warner(aTHX_ WARN_SYNTAX, |
5706 | "%s (...) interpreted as function",name); | |
d008e5eb | 5707 | } |
2f3197b3 | 5708 | } |
3280af22 | 5709 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5710 | s++; |
a687059c LW |
5711 | if (*s == '(') |
5712 | s++; | |
3280af22 | 5713 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5714 | s++; |
7e2040f0 | 5715 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5716 | w = s++; |
7e2040f0 | 5717 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5718 | s++; |
3280af22 | 5719 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5720 | s++; |
e929a76b | 5721 | if (*s == ',') { |
463ee0b2 | 5722 | int kw; |
e929a76b | 5723 | *s = '\0'; |
864dbfa3 | 5724 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5725 | *s = ','; |
463ee0b2 | 5726 | if (kw) |
e929a76b | 5727 | return; |
cea2e8a9 | 5728 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5729 | } |
5730 | } | |
5731 | } | |
5732 | ||
423cee85 JH |
5733 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5734 | Best used as sv=new_constant(..., sv, ...). | |
5735 | If s, pv are NULL, calls subroutine with one argument, | |
5736 | and type is used with error messages only. */ | |
5737 | ||
b3ac6de7 | 5738 | STATIC SV * |
dff6d3cd | 5739 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 5740 | const char *type) |
b3ac6de7 | 5741 | { |
b3ac6de7 | 5742 | dSP; |
3280af22 | 5743 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5744 | SV *res; |
b3ac6de7 IZ |
5745 | SV **cvp; |
5746 | SV *cv, *typesv; | |
f0af216f | 5747 | const char *why1, *why2, *why3; |
423cee85 | 5748 | |
f0af216f | 5749 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
5750 | SV *msg; |
5751 | ||
f0af216f GS |
5752 | why1 = "%^H is not consistent"; |
5753 | why2 = strEQ(key,"charnames") | |
5754 | ? " (missing \"use charnames ...\"?)" | |
5755 | : ""; | |
5756 | why3 = ""; | |
423cee85 JH |
5757 | report: |
5758 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
f0af216f | 5759 | (type ? type: "undef"), why1, why2, why3); |
423cee85 JH |
5760 | yyerror(SvPVX(msg)); |
5761 | SvREFCNT_dec(msg); | |
5762 | return sv; | |
5763 | } | |
b3ac6de7 IZ |
5764 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
5765 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5766 | why1 = "$^H{"; |
5767 | why2 = key; | |
f0af216f | 5768 | why3 = "} is not defined"; |
423cee85 | 5769 | goto report; |
b3ac6de7 IZ |
5770 | } |
5771 | sv_2mortal(sv); /* Parent created it permanently */ | |
5772 | cv = *cvp; | |
423cee85 JH |
5773 | if (!pv && s) |
5774 | pv = sv_2mortal(newSVpvn(s, len)); | |
5775 | if (type && pv) | |
5776 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5777 | else |
423cee85 JH |
5778 | typesv = &PL_sv_undef; |
5779 | ||
e788e7d3 | 5780 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5781 | ENTER ; |
5782 | SAVETMPS; | |
5783 | ||
5784 | PUSHMARK(SP) ; | |
25eaa213 | 5785 | EXTEND(sp, 4); |
423cee85 JH |
5786 | if (pv) |
5787 | PUSHs(pv); | |
b3ac6de7 | 5788 | PUSHs(sv); |
423cee85 JH |
5789 | if (pv) |
5790 | PUSHs(typesv); | |
b3ac6de7 IZ |
5791 | PUSHs(cv); |
5792 | PUTBACK; | |
423cee85 JH |
5793 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5794 | ||
5795 | SPAGAIN ; | |
5796 | ||
5797 | /* Check the eval first */ | |
9b0e499b | 5798 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
5799 | STRLEN n_a; |
5800 | sv_catpv(ERRSV, "Propagated"); | |
5801 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5802 | (void)POPs; |
423cee85 JH |
5803 | res = SvREFCNT_inc(sv); |
5804 | } | |
5805 | else { | |
5806 | res = POPs; | |
e1f15930 | 5807 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5808 | } |
5809 | ||
5810 | PUTBACK ; | |
5811 | FREETMPS ; | |
5812 | LEAVE ; | |
b3ac6de7 | 5813 | POPSTACK; |
423cee85 | 5814 | |
b3ac6de7 | 5815 | if (!SvOK(res)) { |
423cee85 JH |
5816 | why1 = "Call to &{$^H{"; |
5817 | why2 = key; | |
f0af216f | 5818 | why3 = "}} did not return a defined value"; |
423cee85 JH |
5819 | sv = res; |
5820 | goto report; | |
9b0e499b | 5821 | } |
423cee85 | 5822 | |
9b0e499b | 5823 | return res; |
b3ac6de7 | 5824 | } |
423cee85 | 5825 | |
76e3520e | 5826 | STATIC char * |
cea2e8a9 | 5827 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5828 | { |
5829 | register char *d = dest; | |
8903cb82 | 5830 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5831 | for (;;) { |
8903cb82 | 5832 | if (d >= e) |
cea2e8a9 | 5833 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5834 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5835 | *d++ = *s++; |
7e2040f0 | 5836 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5837 | *d++ = ':'; |
5838 | *d++ = ':'; | |
5839 | s++; | |
5840 | } | |
c3e0f903 | 5841 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5842 | *d++ = *s++; |
5843 | *d++ = *s++; | |
5844 | } | |
834a4ddd | 5845 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5846 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5847 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5848 | t += UTF8SKIP(t); |
5849 | if (d + (t - s) > e) | |
cea2e8a9 | 5850 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5851 | Copy(s, d, t - s, char); |
5852 | d += t - s; | |
5853 | s = t; | |
5854 | } | |
463ee0b2 LW |
5855 | else { |
5856 | *d = '\0'; | |
5857 | *slp = d - dest; | |
5858 | return s; | |
e929a76b | 5859 | } |
378cc40b LW |
5860 | } |
5861 | } | |
5862 | ||
76e3520e | 5863 | STATIC char * |
cea2e8a9 | 5864 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5865 | { |
5866 | register char *d; | |
8903cb82 | 5867 | register char *e; |
79072805 | 5868 | char *bracket = 0; |
748a9306 | 5869 | char funny = *s++; |
378cc40b | 5870 | |
a0d0e21e LW |
5871 | if (isSPACE(*s)) |
5872 | s = skipspace(s); | |
378cc40b | 5873 | d = dest; |
8903cb82 | 5874 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5875 | if (isDIGIT(*s)) { |
8903cb82 | 5876 | while (isDIGIT(*s)) { |
5877 | if (d >= e) | |
cea2e8a9 | 5878 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5879 | *d++ = *s++; |
8903cb82 | 5880 | } |
378cc40b LW |
5881 | } |
5882 | else { | |
463ee0b2 | 5883 | for (;;) { |
8903cb82 | 5884 | if (d >= e) |
cea2e8a9 | 5885 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5886 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5887 | *d++ = *s++; |
7e2040f0 | 5888 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5889 | *d++ = ':'; |
5890 | *d++ = ':'; | |
5891 | s++; | |
5892 | } | |
a0d0e21e | 5893 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5894 | *d++ = *s++; |
5895 | *d++ = *s++; | |
5896 | } | |
834a4ddd | 5897 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5898 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5899 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5900 | t += UTF8SKIP(t); |
5901 | if (d + (t - s) > e) | |
cea2e8a9 | 5902 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5903 | Copy(s, d, t - s, char); |
5904 | d += t - s; | |
5905 | s = t; | |
5906 | } | |
463ee0b2 LW |
5907 | else |
5908 | break; | |
5909 | } | |
378cc40b LW |
5910 | } |
5911 | *d = '\0'; | |
5912 | d = dest; | |
79072805 | 5913 | if (*d) { |
3280af22 NIS |
5914 | if (PL_lex_state != LEX_NORMAL) |
5915 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5916 | return s; |
378cc40b | 5917 | } |
748a9306 | 5918 | if (*s == '$' && s[1] && |
7e2040f0 | 5919 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5920 | { |
4810e5ec | 5921 | return s; |
5cd24f17 | 5922 | } |
79072805 LW |
5923 | if (*s == '{') { |
5924 | bracket = s; | |
5925 | s++; | |
5926 | } | |
5927 | else if (ck_uni) | |
5928 | check_uni(); | |
93a17b20 | 5929 | if (s < send) |
79072805 LW |
5930 | *d = *s++; |
5931 | d[1] = '\0'; | |
2b92dfce | 5932 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5933 | *d = toCTRL(*s); |
5934 | s++; | |
de3bb511 | 5935 | } |
79072805 | 5936 | if (bracket) { |
748a9306 | 5937 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5938 | while (s < send) { |
5939 | char ch = *s++; | |
bf4acbe4 | 5940 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 5941 | *d = ch; |
5942 | break; | |
5943 | } | |
5944 | } | |
748a9306 | 5945 | } |
7e2040f0 | 5946 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 5947 | d++; |
a0ed51b3 LW |
5948 | if (UTF) { |
5949 | e = s; | |
155aba94 | 5950 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 5951 | e += UTF8SKIP(e); |
dfe13c55 | 5952 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5953 | e += UTF8SKIP(e); |
5954 | } | |
5955 | Copy(s, d, e - s, char); | |
5956 | d += e - s; | |
5957 | s = e; | |
5958 | } | |
5959 | else { | |
2b92dfce | 5960 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5961 | *d++ = *s++; |
2b92dfce | 5962 | if (d >= e) |
cea2e8a9 | 5963 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5964 | } |
79072805 | 5965 | *d = '\0'; |
bf4acbe4 | 5966 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 5967 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5968 | dTHR; /* only for ckWARN */ |
599cee73 | 5969 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5970 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5971 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5972 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5973 | funny, dest, brack, funny, dest, brack); |
5974 | } | |
79072805 | 5975 | bracket++; |
a0be28da | 5976 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5977 | return s; |
5978 | } | |
2b92dfce GS |
5979 | } |
5980 | /* Handle extended ${^Foo} variables | |
5981 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5982 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5983 | && isALNUM(*s)) | |
5984 | { | |
5985 | d++; | |
5986 | while (isALNUM(*s) && d < e) { | |
5987 | *d++ = *s++; | |
5988 | } | |
5989 | if (d >= e) | |
cea2e8a9 | 5990 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5991 | *d = '\0'; |
79072805 LW |
5992 | } |
5993 | if (*s == '}') { | |
5994 | s++; | |
3280af22 NIS |
5995 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5996 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5997 | if (funny == '#') |
5998 | funny = '@'; | |
d008e5eb GS |
5999 | if (PL_lex_state == LEX_NORMAL) { |
6000 | dTHR; /* only for ckWARN */ | |
6001 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 6002 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6003 | { |
cea2e8a9 | 6004 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
6005 | "Ambiguous use of %c{%s} resolved to %c%s", |
6006 | funny, dest, funny, dest); | |
6007 | } | |
6008 | } | |
79072805 LW |
6009 | } |
6010 | else { | |
6011 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6012 | *dest = '\0'; |
79072805 LW |
6013 | } |
6014 | } | |
3280af22 NIS |
6015 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6016 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6017 | return s; |
6018 | } | |
6019 | ||
cea2e8a9 GS |
6020 | void |
6021 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 6022 | { |
bbce6d69 | 6023 | if (ch == 'i') |
a0d0e21e | 6024 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6025 | else if (ch == 'g') |
6026 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6027 | else if (ch == 'c') |
6028 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6029 | else if (ch == 'o') |
6030 | *pmfl |= PMf_KEEP; | |
6031 | else if (ch == 'm') | |
6032 | *pmfl |= PMf_MULTILINE; | |
6033 | else if (ch == 's') | |
6034 | *pmfl |= PMf_SINGLELINE; | |
6035 | else if (ch == 'x') | |
6036 | *pmfl |= PMf_EXTENDED; | |
6037 | } | |
378cc40b | 6038 | |
76e3520e | 6039 | STATIC char * |
cea2e8a9 | 6040 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6041 | { |
79072805 LW |
6042 | PMOP *pm; |
6043 | char *s; | |
378cc40b | 6044 | |
09bef843 | 6045 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6046 | if (!s) { |
3280af22 NIS |
6047 | if (PL_lex_stuff) |
6048 | SvREFCNT_dec(PL_lex_stuff); | |
6049 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6050 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 6051 | } |
bbce6d69 | 6052 | |
8782bef2 | 6053 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6054 | if (PL_multi_open == '?') |
79072805 | 6055 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6056 | if(type == OP_QR) { |
6057 | while (*s && strchr("iomsx", *s)) | |
6058 | pmflag(&pm->op_pmflags,*s++); | |
6059 | } | |
6060 | else { | |
6061 | while (*s && strchr("iogcmsx", *s)) | |
6062 | pmflag(&pm->op_pmflags,*s++); | |
6063 | } | |
4633a7c4 | 6064 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6065 | |
3280af22 | 6066 | PL_lex_op = (OP*)pm; |
79072805 | 6067 | yylval.ival = OP_MATCH; |
378cc40b LW |
6068 | return s; |
6069 | } | |
6070 | ||
76e3520e | 6071 | STATIC char * |
cea2e8a9 | 6072 | S_scan_subst(pTHX_ char *start) |
79072805 | 6073 | { |
a0d0e21e | 6074 | register char *s; |
79072805 | 6075 | register PMOP *pm; |
4fdae800 | 6076 | I32 first_start; |
79072805 LW |
6077 | I32 es = 0; |
6078 | ||
79072805 LW |
6079 | yylval.ival = OP_NULL; |
6080 | ||
09bef843 | 6081 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
6082 | |
6083 | if (!s) { | |
3280af22 NIS |
6084 | if (PL_lex_stuff) |
6085 | SvREFCNT_dec(PL_lex_stuff); | |
6086 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6087 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 6088 | } |
79072805 | 6089 | |
3280af22 | 6090 | if (s[-1] == PL_multi_open) |
79072805 LW |
6091 | s--; |
6092 | ||
3280af22 | 6093 | first_start = PL_multi_start; |
09bef843 | 6094 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6095 | if (!s) { |
3280af22 NIS |
6096 | if (PL_lex_stuff) |
6097 | SvREFCNT_dec(PL_lex_stuff); | |
6098 | PL_lex_stuff = Nullsv; | |
6099 | if (PL_lex_repl) | |
6100 | SvREFCNT_dec(PL_lex_repl); | |
6101 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6102 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6103 | } |
3280af22 | 6104 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6105 | |
79072805 | 6106 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6107 | while (*s) { |
a687059c LW |
6108 | if (*s == 'e') { |
6109 | s++; | |
2f3197b3 | 6110 | es++; |
a687059c | 6111 | } |
b3eb6a9b | 6112 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6113 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6114 | else |
6115 | break; | |
378cc40b | 6116 | } |
79072805 LW |
6117 | |
6118 | if (es) { | |
6119 | SV *repl; | |
0244c3a4 GS |
6120 | PL_sublex_info.super_bufptr = s; |
6121 | PL_sublex_info.super_bufend = PL_bufend; | |
6122 | PL_multi_end = 0; | |
79072805 | 6123 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6124 | repl = newSVpvn("",0); |
463ee0b2 | 6125 | while (es-- > 0) |
a0d0e21e | 6126 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6127 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6128 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6129 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6130 | SvEVALED_on(repl); |
3280af22 NIS |
6131 | SvREFCNT_dec(PL_lex_repl); |
6132 | PL_lex_repl = repl; | |
378cc40b | 6133 | } |
79072805 | 6134 | |
4633a7c4 | 6135 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6136 | PL_lex_op = (OP*)pm; |
79072805 | 6137 | yylval.ival = OP_SUBST; |
378cc40b LW |
6138 | return s; |
6139 | } | |
6140 | ||
76e3520e | 6141 | STATIC char * |
cea2e8a9 | 6142 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6143 | { |
a0d0e21e | 6144 | register char* s; |
11343788 | 6145 | OP *o; |
79072805 LW |
6146 | short *tbl; |
6147 | I32 squash; | |
a0ed51b3 | 6148 | I32 del; |
79072805 | 6149 | I32 complement; |
a0ed51b3 LW |
6150 | I32 utf8; |
6151 | I32 count = 0; | |
79072805 LW |
6152 | |
6153 | yylval.ival = OP_NULL; | |
6154 | ||
09bef843 | 6155 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6156 | if (!s) { |
3280af22 NIS |
6157 | if (PL_lex_stuff) |
6158 | SvREFCNT_dec(PL_lex_stuff); | |
6159 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6160 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 6161 | } |
3280af22 | 6162 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6163 | s--; |
6164 | ||
09bef843 | 6165 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6166 | if (!s) { |
3280af22 NIS |
6167 | if (PL_lex_stuff) |
6168 | SvREFCNT_dec(PL_lex_stuff); | |
6169 | PL_lex_stuff = Nullsv; | |
6170 | if (PL_lex_repl) | |
6171 | SvREFCNT_dec(PL_lex_repl); | |
6172 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6173 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6174 | } |
79072805 | 6175 | |
01ec43d0 GS |
6176 | New(803,tbl,256,short); |
6177 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
2f3197b3 | 6178 | |
a0ed51b3 | 6179 | complement = del = squash = 0; |
6940069f | 6180 | while (strchr("cds", *s)) { |
395c3793 | 6181 | if (*s == 'c') |
79072805 | 6182 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6183 | else if (*s == 'd') |
a0ed51b3 LW |
6184 | del = OPpTRANS_DELETE; |
6185 | else if (*s == 's') | |
79072805 | 6186 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6187 | s++; |
6188 | } | |
6940069f | 6189 | o->op_private = del|squash|complement; |
79072805 | 6190 | |
3280af22 | 6191 | PL_lex_op = o; |
79072805 LW |
6192 | yylval.ival = OP_TRANS; |
6193 | return s; | |
6194 | } | |
6195 | ||
76e3520e | 6196 | STATIC char * |
cea2e8a9 | 6197 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6198 | { |
11343788 | 6199 | dTHR; |
79072805 LW |
6200 | SV *herewas; |
6201 | I32 op_type = OP_SCALAR; | |
6202 | I32 len; | |
6203 | SV *tmpstr; | |
6204 | char term; | |
6205 | register char *d; | |
fc36a67e | 6206 | register char *e; |
4633a7c4 | 6207 | char *peek; |
3280af22 | 6208 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6209 | |
6210 | s += 2; | |
3280af22 NIS |
6211 | d = PL_tokenbuf; |
6212 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6213 | if (!outer) |
79072805 | 6214 | *d++ = '\n'; |
bf4acbe4 | 6215 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6216 | if (*peek && strchr("`'\"",*peek)) { |
6217 | s = peek; | |
79072805 | 6218 | term = *s++; |
3280af22 | 6219 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6220 | d += len; |
3280af22 | 6221 | if (s < PL_bufend) |
79072805 | 6222 | s++; |
79072805 LW |
6223 | } |
6224 | else { | |
6225 | if (*s == '\\') | |
6226 | s++, term = '\''; | |
6227 | else | |
6228 | term = '"'; | |
7e2040f0 | 6229 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6230 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6231 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6232 | if (d < e) |
6233 | *d++ = *s; | |
6234 | } | |
6235 | } | |
3280af22 | 6236 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6237 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6238 | *d++ = '\n'; |
6239 | *d = '\0'; | |
3280af22 | 6240 | len = d - PL_tokenbuf; |
6a27c188 | 6241 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6242 | d = strchr(s, '\r'); |
6243 | if (d) { | |
6244 | char *olds = s; | |
6245 | s = d; | |
3280af22 | 6246 | while (s < PL_bufend) { |
f63a84b2 LW |
6247 | if (*s == '\r') { |
6248 | *d++ = '\n'; | |
6249 | if (*++s == '\n') | |
6250 | s++; | |
6251 | } | |
6252 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6253 | *d++ = *s++; | |
6254 | s++; | |
6255 | } | |
6256 | else | |
6257 | *d++ = *s++; | |
6258 | } | |
6259 | *d = '\0'; | |
3280af22 NIS |
6260 | PL_bufend = d; |
6261 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6262 | s = olds; |
6263 | } | |
6264 | #endif | |
79072805 | 6265 | d = "\n"; |
3280af22 | 6266 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6267 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6268 | else |
79cb57f6 | 6269 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6270 | s += SvCUR(herewas); |
748a9306 | 6271 | |
8d6dde3e | 6272 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6273 | sv_upgrade(tmpstr, SVt_PVIV); |
6274 | if (term == '\'') { | |
79072805 | 6275 | op_type = OP_CONST; |
748a9306 LW |
6276 | SvIVX(tmpstr) = -1; |
6277 | } | |
6278 | else if (term == '`') { | |
79072805 | 6279 | op_type = OP_BACKTICK; |
748a9306 LW |
6280 | SvIVX(tmpstr) = '\\'; |
6281 | } | |
79072805 LW |
6282 | |
6283 | CLINE; | |
57843af0 | 6284 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6285 | PL_multi_open = PL_multi_close = '<'; |
6286 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6287 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6288 | char *bufptr = PL_sublex_info.super_bufptr; | |
6289 | char *bufend = PL_sublex_info.super_bufend; | |
6290 | char *olds = s - SvCUR(herewas); | |
6291 | s = strchr(bufptr, '\n'); | |
6292 | if (!s) | |
6293 | s = bufend; | |
6294 | d = s; | |
6295 | while (s < bufend && | |
6296 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6297 | if (*s++ == '\n') | |
57843af0 | 6298 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6299 | } |
6300 | if (s >= bufend) { | |
57843af0 | 6301 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6302 | missingterm(PL_tokenbuf); |
6303 | } | |
6304 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6305 | sv_setpvn(tmpstr,d+1,s-d); | |
6306 | s += len - 1; | |
6307 | sv_catpvn(herewas,s,bufend-s); | |
6308 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6309 | ||
6310 | s = olds; | |
6311 | goto retval; | |
6312 | } | |
6313 | else if (!outer) { | |
79072805 | 6314 | d = s; |
3280af22 NIS |
6315 | while (s < PL_bufend && |
6316 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6317 | if (*s++ == '\n') |
57843af0 | 6318 | CopLINE_inc(PL_curcop); |
79072805 | 6319 | } |
3280af22 | 6320 | if (s >= PL_bufend) { |
57843af0 | 6321 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6322 | missingterm(PL_tokenbuf); |
79072805 LW |
6323 | } |
6324 | sv_setpvn(tmpstr,d+1,s-d); | |
6325 | s += len - 1; | |
57843af0 | 6326 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6327 | |
3280af22 NIS |
6328 | sv_catpvn(herewas,s,PL_bufend-s); |
6329 | sv_setsv(PL_linestr,herewas); | |
6330 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6331 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6332 | } |
6333 | else | |
6334 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6335 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6336 | if (!outer || |
3280af22 | 6337 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6338 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6339 | missingterm(PL_tokenbuf); |
79072805 | 6340 | } |
57843af0 | 6341 | CopLINE_inc(PL_curcop); |
3280af22 | 6342 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6343 | #ifndef PERL_STRICT_CR |
3280af22 | 6344 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6345 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6346 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6347 | { |
3280af22 NIS |
6348 | PL_bufend[-2] = '\n'; |
6349 | PL_bufend--; | |
6350 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6351 | } |
3280af22 NIS |
6352 | else if (PL_bufend[-1] == '\r') |
6353 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6354 | } |
3280af22 NIS |
6355 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6356 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6357 | #endif |
3280af22 | 6358 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6359 | SV *sv = NEWSV(88,0); |
6360 | ||
93a17b20 | 6361 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6362 | sv_setsv(sv,PL_linestr); |
57843af0 | 6363 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6364 | } |
3280af22 NIS |
6365 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6366 | s = PL_bufend - 1; | |
79072805 | 6367 | *s = ' '; |
3280af22 NIS |
6368 | sv_catsv(PL_linestr,herewas); |
6369 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6370 | } |
6371 | else { | |
3280af22 NIS |
6372 | s = PL_bufend; |
6373 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6374 | } |
6375 | } | |
79072805 | 6376 | s++; |
0244c3a4 | 6377 | retval: |
57843af0 | 6378 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6379 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6380 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6381 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6382 | } |
8990e307 | 6383 | SvREFCNT_dec(herewas); |
3280af22 | 6384 | PL_lex_stuff = tmpstr; |
79072805 LW |
6385 | yylval.ival = op_type; |
6386 | return s; | |
6387 | } | |
6388 | ||
02aa26ce NT |
6389 | /* scan_inputsymbol |
6390 | takes: current position in input buffer | |
6391 | returns: new position in input buffer | |
6392 | side-effects: yylval and lex_op are set. | |
6393 | ||
6394 | This code handles: | |
6395 | ||
6396 | <> read from ARGV | |
6397 | <FH> read from filehandle | |
6398 | <pkg::FH> read from package qualified filehandle | |
6399 | <pkg'FH> read from package qualified filehandle | |
6400 | <$fh> read from filehandle in $fh | |
6401 | <*.h> filename glob | |
6402 | ||
6403 | */ | |
6404 | ||
76e3520e | 6405 | STATIC char * |
cea2e8a9 | 6406 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6407 | { |
02aa26ce | 6408 | register char *s = start; /* current position in buffer */ |
79072805 | 6409 | register char *d; |
fc36a67e | 6410 | register char *e; |
1b420867 | 6411 | char *end; |
79072805 LW |
6412 | I32 len; |
6413 | ||
3280af22 NIS |
6414 | d = PL_tokenbuf; /* start of temp holding space */ |
6415 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6416 | end = strchr(s, '\n'); |
6417 | if (!end) | |
6418 | end = PL_bufend; | |
6419 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6420 | |
6421 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6422 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6423 | */ |
6424 | ||
3280af22 | 6425 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6426 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6427 | if (s >= end) |
cea2e8a9 | 6428 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6429 | |
fc36a67e | 6430 | s++; |
02aa26ce NT |
6431 | |
6432 | /* check for <$fh> | |
6433 | Remember, only scalar variables are interpreted as filehandles by | |
6434 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6435 | treated as a glob() call. | |
6436 | This code makes use of the fact that except for the $ at the front, | |
6437 | a scalar variable and a filehandle look the same. | |
6438 | */ | |
4633a7c4 | 6439 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6440 | |
6441 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6442 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6443 | d++; |
02aa26ce NT |
6444 | |
6445 | /* If we've tried to read what we allow filehandles to look like, and | |
6446 | there's still text left, then it must be a glob() and not a getline. | |
6447 | Use scan_str to pull out the stuff between the <> and treat it | |
6448 | as nothing more than a string. | |
6449 | */ | |
6450 | ||
3280af22 | 6451 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6452 | yylval.ival = OP_GLOB; |
6453 | set_csh(); | |
09bef843 | 6454 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6455 | if (!s) |
cea2e8a9 | 6456 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6457 | return s; |
6458 | } | |
395c3793 | 6459 | else { |
02aa26ce | 6460 | /* we're in a filehandle read situation */ |
3280af22 | 6461 | d = PL_tokenbuf; |
02aa26ce NT |
6462 | |
6463 | /* turn <> into <ARGV> */ | |
79072805 LW |
6464 | if (!len) |
6465 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6466 | |
6467 | /* if <$fh>, create the ops to turn the variable into a | |
6468 | filehandle | |
6469 | */ | |
79072805 | 6470 | if (*d == '$') { |
a0d0e21e | 6471 | I32 tmp; |
02aa26ce NT |
6472 | |
6473 | /* try to find it in the pad for this block, otherwise find | |
6474 | add symbol table ops | |
6475 | */ | |
11343788 MB |
6476 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6477 | OP *o = newOP(OP_PADSV, 0); | |
6478 | o->op_targ = tmp; | |
f5284f61 | 6479 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6480 | } |
6481 | else { | |
6482 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6483 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6484 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6485 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6486 | } |
f5284f61 IZ |
6487 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6488 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6489 | yylval.ival = OP_NULL; |
6490 | } | |
02aa26ce NT |
6491 | |
6492 | /* If it's none of the above, it must be a literal filehandle | |
6493 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6494 | else { |
85e6fe83 | 6495 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6496 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6497 | yylval.ival = OP_NULL; |
6498 | } | |
6499 | } | |
02aa26ce | 6500 | |
79072805 LW |
6501 | return s; |
6502 | } | |
6503 | ||
02aa26ce NT |
6504 | |
6505 | /* scan_str | |
6506 | takes: start position in buffer | |
09bef843 SB |
6507 | keep_quoted preserve \ on the embedded delimiter(s) |
6508 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6509 | returns: position to continue reading from buffer |
6510 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6511 | updates the read buffer. | |
6512 | ||
6513 | This subroutine pulls a string out of the input. It is called for: | |
6514 | q single quotes q(literal text) | |
6515 | ' single quotes 'literal text' | |
6516 | qq double quotes qq(interpolate $here please) | |
6517 | " double quotes "interpolate $here please" | |
6518 | qx backticks qx(/bin/ls -l) | |
6519 | ` backticks `/bin/ls -l` | |
6520 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6521 | m// regexp match m/this/ | |
6522 | s/// regexp substitute s/this/that/ | |
6523 | tr/// string transliterate tr/this/that/ | |
6524 | y/// string transliterate y/this/that/ | |
6525 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6526 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6527 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6528 | ||
6529 | In most of these cases (all but <>, patterns and transliterate) | |
6530 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6531 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6532 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6533 | calls scan_str(). | |
6534 | ||
6535 | It skips whitespace before the string starts, and treats the first | |
6536 | character as the delimiter. If the delimiter is one of ([{< then | |
6537 | the corresponding "close" character )]}> is used as the closing | |
6538 | delimiter. It allows quoting of delimiters, and if the string has | |
6539 | balanced delimiters ([{<>}]) it allows nesting. | |
6540 | ||
6541 | The lexer always reads these strings into lex_stuff, except in the | |
6542 | case of the operators which take *two* arguments (s/// and tr///) | |
6543 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6544 | arg to s or tr) and if so puts the string into lex_repl. | |
6545 | ||
6546 | */ | |
6547 | ||
76e3520e | 6548 | STATIC char * |
09bef843 | 6549 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6550 | { |
11343788 | 6551 | dTHR; |
02aa26ce NT |
6552 | SV *sv; /* scalar value: string */ |
6553 | char *tmps; /* temp string, used for delimiter matching */ | |
6554 | register char *s = start; /* current position in the buffer */ | |
6555 | register char term; /* terminating character */ | |
6556 | register char *to; /* current position in the sv's data */ | |
6557 | I32 brackets = 1; /* bracket nesting level */ | |
b1c7b182 | 6558 | bool has_utf = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6559 | |
6560 | /* skip space before the delimiter */ | |
fb73857a | 6561 | if (isSPACE(*s)) |
6562 | s = skipspace(s); | |
02aa26ce NT |
6563 | |
6564 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6565 | CLINE; |
02aa26ce NT |
6566 | |
6567 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6568 | term = *s; |
b1c7b182 GS |
6569 | if ((term & 0x80) && UTF) |
6570 | has_utf = TRUE; | |
6571 | ||
02aa26ce | 6572 | /* mark where we are */ |
57843af0 | 6573 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6574 | PL_multi_open = term; |
02aa26ce NT |
6575 | |
6576 | /* find corresponding closing delimiter */ | |
93a17b20 | 6577 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6578 | term = tmps[5]; |
3280af22 | 6579 | PL_multi_close = term; |
79072805 | 6580 | |
02aa26ce | 6581 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6582 | assuming. 79 is the SV's initial length. What a random number. */ |
6583 | sv = NEWSV(87,79); | |
ed6116ce LW |
6584 | sv_upgrade(sv, SVt_PVIV); |
6585 | SvIVX(sv) = term; | |
a0d0e21e | 6586 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6587 | |
6588 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6589 | if (keep_delims) |
6590 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6591 | s++; |
6592 | for (;;) { | |
02aa26ce | 6593 | /* extend sv if need be */ |
3280af22 | 6594 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6595 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6596 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6597 | |
02aa26ce | 6598 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6599 | if (PL_multi_open == PL_multi_close) { |
6600 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6601 | /* embedded newlines increment the current line number */ |
3280af22 | 6602 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6603 | CopLINE_inc(PL_curcop); |
02aa26ce | 6604 | /* handle quoted delimiters */ |
3280af22 | 6605 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6606 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6607 | s++; |
02aa26ce | 6608 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6609 | else |
6610 | *to++ = *s++; | |
6611 | } | |
02aa26ce NT |
6612 | /* terminate when run out of buffer (the for() condition), or |
6613 | have found the terminator */ | |
93a17b20 LW |
6614 | else if (*s == term) |
6615 | break; | |
b1c7b182 GS |
6616 | else if (!has_utf && (*s & 0x80) && UTF) |
6617 | has_utf = TRUE; | |
93a17b20 LW |
6618 | *to = *s; |
6619 | } | |
6620 | } | |
02aa26ce NT |
6621 | |
6622 | /* if the terminator isn't the same as the start character (e.g., | |
6623 | matched brackets), we have to allow more in the quoting, and | |
6624 | be prepared for nested brackets. | |
6625 | */ | |
93a17b20 | 6626 | else { |
02aa26ce | 6627 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6628 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6629 | /* embedded newlines increment the line count */ |
3280af22 | 6630 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6631 | CopLINE_inc(PL_curcop); |
02aa26ce | 6632 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6633 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6634 | if (!keep_quoted && |
6635 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6636 | s++; |
6637 | else | |
6638 | *to++ = *s++; | |
6639 | } | |
02aa26ce | 6640 | /* allow nested opens and closes */ |
3280af22 | 6641 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6642 | break; |
3280af22 | 6643 | else if (*s == PL_multi_open) |
93a17b20 | 6644 | brackets++; |
b1c7b182 GS |
6645 | else if (!has_utf && (*s & 0x80) && UTF) |
6646 | has_utf = TRUE; | |
93a17b20 LW |
6647 | *to = *s; |
6648 | } | |
6649 | } | |
02aa26ce | 6650 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6651 | *to = '\0'; |
463ee0b2 | 6652 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6653 | |
02aa26ce NT |
6654 | /* |
6655 | * this next chunk reads more into the buffer if we're not done yet | |
6656 | */ | |
6657 | ||
b1c7b182 GS |
6658 | if (s < PL_bufend) |
6659 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6660 | |
6a27c188 | 6661 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6662 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6663 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6664 | (to[-2] == '\n' && to[-1] == '\r')) | |
6665 | { | |
f63a84b2 LW |
6666 | to[-2] = '\n'; |
6667 | to--; | |
6668 | SvCUR_set(sv, to - SvPVX(sv)); | |
6669 | } | |
6670 | else if (to[-1] == '\r') | |
6671 | to[-1] = '\n'; | |
6672 | } | |
6673 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6674 | to[-1] = '\n'; | |
6675 | #endif | |
6676 | ||
02aa26ce NT |
6677 | /* if we're out of file, or a read fails, bail and reset the current |
6678 | line marker so we can report where the unterminated string began | |
6679 | */ | |
3280af22 NIS |
6680 | if (!PL_rsfp || |
6681 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6682 | sv_free(sv); |
57843af0 | 6683 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6684 | return Nullch; |
6685 | } | |
02aa26ce | 6686 | /* we read a line, so increment our line counter */ |
57843af0 | 6687 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6688 | |
02aa26ce | 6689 | /* update debugger info */ |
3280af22 | 6690 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6691 | SV *sv = NEWSV(88,0); |
6692 | ||
93a17b20 | 6693 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6694 | sv_setsv(sv,PL_linestr); |
57843af0 | 6695 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6696 | } |
a0ed51b3 | 6697 | |
3280af22 NIS |
6698 | /* having changed the buffer, we must update PL_bufend */ |
6699 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6700 | } |
02aa26ce NT |
6701 | |
6702 | /* at this point, we have successfully read the delimited string */ | |
6703 | ||
09bef843 SB |
6704 | if (keep_delims) |
6705 | sv_catpvn(sv, s, 1); | |
b1c7b182 GS |
6706 | if (has_utf) |
6707 | SvUTF8_on(sv); | |
57843af0 | 6708 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6709 | s++; |
02aa26ce NT |
6710 | |
6711 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6712 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6713 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6714 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6715 | } |
02aa26ce NT |
6716 | |
6717 | /* decide whether this is the first or second quoted string we've read | |
6718 | for this op | |
6719 | */ | |
6720 | ||
3280af22 NIS |
6721 | if (PL_lex_stuff) |
6722 | PL_lex_repl = sv; | |
79072805 | 6723 | else |
3280af22 | 6724 | PL_lex_stuff = sv; |
378cc40b LW |
6725 | return s; |
6726 | } | |
6727 | ||
02aa26ce NT |
6728 | /* |
6729 | scan_num | |
6730 | takes: pointer to position in buffer | |
6731 | returns: pointer to new position in buffer | |
6732 | side-effects: builds ops for the constant in yylval.op | |
6733 | ||
6734 | Read a number in any of the formats that Perl accepts: | |
6735 | ||
4f19785b | 6736 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6737 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6738 | ||
6739 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6740 | underbars before a decimal point must be at three digit intervals. | |
6741 | ||
3280af22 | 6742 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6743 | thing it reads. |
6744 | ||
6745 | If it reads a number without a decimal point or an exponent, it will | |
6746 | try converting the number to an integer and see if it can do so | |
6747 | without loss of precision. | |
6748 | */ | |
6749 | ||
378cc40b | 6750 | char * |
864dbfa3 | 6751 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6752 | { |
02aa26ce NT |
6753 | register char *s = start; /* current position in buffer */ |
6754 | register char *d; /* destination in temp buffer */ | |
6755 | register char *e; /* end of temp buffer */ | |
86554af2 | 6756 | NV nv; /* number read, as a double */ |
a7cb1f99 | 6757 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6758 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6759 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6760 | static char number_too_long[] = "Number too long"; |
378cc40b | 6761 | |
02aa26ce NT |
6762 | /* We use the first character to decide what type of number this is */ |
6763 | ||
378cc40b | 6764 | switch (*s) { |
79072805 | 6765 | default: |
cea2e8a9 | 6766 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6767 | |
6768 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6769 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6770 | case '0': |
6771 | { | |
02aa26ce NT |
6772 | /* variables: |
6773 | u holds the "number so far" | |
4f19785b WSI |
6774 | shift the power of 2 of the base |
6775 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6776 | overflowed was the number more than we can hold? |
6777 | ||
6778 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6779 | we in octal/hex/binary?" indicator to disallow hex characters |
6780 | when in octal mode. | |
02aa26ce | 6781 | */ |
f248d071 | 6782 | dTHR; |
9e24b6e2 JH |
6783 | NV n = 0.0; |
6784 | UV u = 0; | |
79072805 | 6785 | I32 shift; |
9e24b6e2 JH |
6786 | bool overflowed = FALSE; |
6787 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6788 | static char* bases[5] = { "", "binary", "", "octal", | |
6789 | "hexadecimal" }; | |
6790 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6791 | "Hexadecimal" }; | |
6792 | static char *maxima[5] = { "", | |
6793 | "0b11111111111111111111111111111111", | |
6794 | "", | |
893fe2c2 | 6795 | "037777777777", |
9e24b6e2 JH |
6796 | "0xffffffff" }; |
6797 | char *base, *Base, *max; | |
378cc40b | 6798 | |
02aa26ce | 6799 | /* check for hex */ |
378cc40b LW |
6800 | if (s[1] == 'x') { |
6801 | shift = 4; | |
6802 | s += 2; | |
4f19785b WSI |
6803 | } else if (s[1] == 'b') { |
6804 | shift = 1; | |
6805 | s += 2; | |
378cc40b | 6806 | } |
02aa26ce | 6807 | /* check for a decimal in disguise */ |
b78218b7 | 6808 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6809 | goto decimal; |
02aa26ce | 6810 | /* so it must be octal */ |
378cc40b LW |
6811 | else |
6812 | shift = 3; | |
9e24b6e2 JH |
6813 | |
6814 | base = bases[shift]; | |
6815 | Base = Bases[shift]; | |
6816 | max = maxima[shift]; | |
02aa26ce | 6817 | |
4f19785b | 6818 | /* read the rest of the number */ |
378cc40b | 6819 | for (;;) { |
9e24b6e2 | 6820 | /* x is used in the overflow test, |
893fe2c2 | 6821 | b is the digit we're adding on. */ |
9e24b6e2 | 6822 | UV x, b; |
55497cff | 6823 | |
378cc40b | 6824 | switch (*s) { |
02aa26ce NT |
6825 | |
6826 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6827 | default: |
6828 | goto out; | |
02aa26ce NT |
6829 | |
6830 | /* _ are ignored */ | |
de3bb511 LW |
6831 | case '_': |
6832 | s++; | |
6833 | break; | |
02aa26ce NT |
6834 | |
6835 | /* 8 and 9 are not octal */ | |
378cc40b | 6836 | case '8': case '9': |
4f19785b | 6837 | if (shift == 3) |
cea2e8a9 | 6838 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6839 | /* FALL THROUGH */ |
02aa26ce NT |
6840 | |
6841 | /* octal digits */ | |
4f19785b | 6842 | case '2': case '3': case '4': |
378cc40b | 6843 | case '5': case '6': case '7': |
4f19785b | 6844 | if (shift == 1) |
cea2e8a9 | 6845 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6846 | /* FALL THROUGH */ |
6847 | ||
6848 | case '0': case '1': | |
02aa26ce | 6849 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6850 | goto digit; |
02aa26ce NT |
6851 | |
6852 | /* hex digits */ | |
378cc40b LW |
6853 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6854 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6855 | /* make sure they said 0x */ |
378cc40b LW |
6856 | if (shift != 4) |
6857 | goto out; | |
55497cff | 6858 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6859 | |
6860 | /* Prepare to put the digit we have onto the end | |
6861 | of the number so far. We check for overflows. | |
6862 | */ | |
6863 | ||
55497cff | 6864 | digit: |
9e24b6e2 JH |
6865 | if (!overflowed) { |
6866 | x = u << shift; /* make room for the digit */ | |
6867 | ||
6868 | if ((x >> shift) != u | |
6869 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6870 | dTHR; | |
6871 | overflowed = TRUE; | |
6872 | n = (NV) u; | |
767a6a26 PM |
6873 | if (ckWARN_d(WARN_OVERFLOW)) |
6874 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6875 | "Integer overflow in %s number", |
6876 | base); | |
6877 | } else | |
6878 | u = x | b; /* add the digit to the end */ | |
6879 | } | |
6880 | if (overflowed) { | |
6881 | n *= nvshift[shift]; | |
6882 | /* If an NV has not enough bits in its | |
6883 | * mantissa to represent an UV this summing of | |
6884 | * small low-order numbers is a waste of time | |
6885 | * (because the NV cannot preserve the | |
6886 | * low-order bits anyway): we could just | |
6887 | * remember when did we overflow and in the | |
6888 | * end just multiply n by the right | |
6889 | * amount. */ | |
6890 | n += (NV) b; | |
55497cff | 6891 | } |
378cc40b LW |
6892 | break; |
6893 | } | |
6894 | } | |
02aa26ce NT |
6895 | |
6896 | /* if we get here, we had success: make a scalar value from | |
6897 | the number. | |
6898 | */ | |
378cc40b | 6899 | out: |
79072805 | 6900 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6901 | if (overflowed) { |
6902 | dTHR; | |
767a6a26 PM |
6903 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6904 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6905 | "%s number > %s non-portable", |
6906 | Base, max); | |
6907 | sv_setnv(sv, n); | |
6908 | } | |
6909 | else { | |
15041a67 | 6910 | #if UVSIZE > 4 |
9e24b6e2 | 6911 | dTHR; |
767a6a26 PM |
6912 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6913 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6914 | "%s number > %s non-portable", |
6915 | Base, max); | |
2cc4c2dc | 6916 | #endif |
9e24b6e2 JH |
6917 | sv_setuv(sv, u); |
6918 | } | |
2cc4c2dc | 6919 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6920 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6921 | } |
6922 | break; | |
02aa26ce NT |
6923 | |
6924 | /* | |
6925 | handle decimal numbers. | |
6926 | we're also sent here when we read a 0 as the first digit | |
6927 | */ | |
378cc40b LW |
6928 | case '1': case '2': case '3': case '4': case '5': |
6929 | case '6': case '7': case '8': case '9': case '.': | |
6930 | decimal: | |
3280af22 NIS |
6931 | d = PL_tokenbuf; |
6932 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6933 | floatit = FALSE; |
02aa26ce NT |
6934 | |
6935 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6936 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6937 | /* skip underscores, checking for misplaced ones |
6938 | if -w is on | |
6939 | */ | |
93a17b20 | 6940 | if (*s == '_') { |
d008e5eb | 6941 | dTHR; /* only for ckWARN */ |
599cee73 | 6942 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6943 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6944 | lastub = ++s; |
6945 | } | |
fc36a67e | 6946 | else { |
02aa26ce | 6947 | /* check for end of fixed-length buffer */ |
fc36a67e | 6948 | if (d >= e) |
cea2e8a9 | 6949 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6950 | /* if we're ok, copy the character */ |
378cc40b | 6951 | *d++ = *s++; |
fc36a67e | 6952 | } |
378cc40b | 6953 | } |
02aa26ce NT |
6954 | |
6955 | /* final misplaced underbar check */ | |
d008e5eb GS |
6956 | if (lastub && s - lastub != 3) { |
6957 | dTHR; | |
6958 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6959 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6960 | } |
02aa26ce NT |
6961 | |
6962 | /* read a decimal portion if there is one. avoid | |
6963 | 3..5 being interpreted as the number 3. followed | |
6964 | by .5 | |
6965 | */ | |
2f3197b3 | 6966 | if (*s == '.' && s[1] != '.') { |
79072805 | 6967 | floatit = TRUE; |
378cc40b | 6968 | *d++ = *s++; |
02aa26ce NT |
6969 | |
6970 | /* copy, ignoring underbars, until we run out of | |
6971 | digits. Note: no misplaced underbar checks! | |
6972 | */ | |
fc36a67e | 6973 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6974 | /* fixed length buffer check */ |
fc36a67e | 6975 | if (d >= e) |
cea2e8a9 | 6976 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6977 | if (*s != '_') |
6978 | *d++ = *s; | |
378cc40b | 6979 | } |
dd629d5b GS |
6980 | if (*s == '.' && isDIGIT(s[1])) { |
6981 | /* oops, it's really a v-string, but without the "v" */ | |
6982 | s = start - 1; | |
6983 | goto vstring; | |
6984 | } | |
378cc40b | 6985 | } |
02aa26ce NT |
6986 | |
6987 | /* read exponent part, if present */ | |
93a17b20 | 6988 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6989 | floatit = TRUE; |
6990 | s++; | |
02aa26ce NT |
6991 | |
6992 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6993 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6994 | |
6995 | /* allow positive or negative exponent */ | |
378cc40b LW |
6996 | if (*s == '+' || *s == '-') |
6997 | *d++ = *s++; | |
02aa26ce NT |
6998 | |
6999 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 7000 | while (isDIGIT(*s)) { |
7001 | if (d >= e) | |
cea2e8a9 | 7002 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 7003 | *d++ = *s++; |
fc36a67e | 7004 | } |
378cc40b | 7005 | } |
02aa26ce NT |
7006 | |
7007 | /* terminate the string */ | |
378cc40b | 7008 | *d = '\0'; |
02aa26ce NT |
7009 | |
7010 | /* make an sv from the string */ | |
79072805 | 7011 | sv = NEWSV(92,0); |
097ee67d | 7012 | |
86554af2 | 7013 | #if defined(Strtol) && defined(Strtoul) |
0b7fceb9 MU |
7014 | |
7015 | /* | |
0b7fceb9 MU |
7016 | strtol/strtoll sets errno to ERANGE if the number is too big |
7017 | for an integer. We try to do an integer conversion first | |
7018 | if no characters indicating "float" have been found. | |
7019 | */ | |
7020 | ||
7021 | if (!floatit) { | |
0b7fceb9 MU |
7022 | IV iv; |
7023 | UV uv; | |
7024 | errno = 0; | |
c239479b | 7025 | if (*PL_tokenbuf == '-') |
96989be3 | 7026 | iv = Strtol(PL_tokenbuf, (char**)NULL, 10); |
c239479b | 7027 | else |
96989be3 | 7028 | uv = Strtoul(PL_tokenbuf, (char**)NULL, 10); |
55eb892c | 7029 | if (errno) |
86554af2 | 7030 | floatit = TRUE; /* Probably just too large. */ |
0b7fceb9 MU |
7031 | else if (*PL_tokenbuf == '-') |
7032 | sv_setiv(sv, iv); | |
86554af2 JH |
7033 | else if (uv <= IV_MAX) |
7034 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ | |
0b7fceb9 | 7035 | else |
c239479b | 7036 | sv_setuv(sv, uv); |
0b7fceb9 MU |
7037 | } |
7038 | if (floatit) { | |
86554af2 JH |
7039 | nv = Atof(PL_tokenbuf); |
7040 | sv_setnv(sv, nv); | |
7041 | } | |
7042 | #else | |
7043 | /* | |
7044 | No working strtou?ll?. | |
7045 | ||
7046 | Unfortunately atol() doesn't do range checks (returning | |
7047 | LONG_MIN/LONG_MAX, and setting errno to ERANGE on overflows) | |
7048 | everywhere [1], so we cannot use use atol() (or atoll()). | |
7049 | If we could, they would be used, as Atol(), very much like | |
7050 | Strtol() and Strtoul() are used above. | |
7051 | ||
7052 | [1] XXX Configure test needed to check for atol() | |
d6c14000 JH |
7053 | (and atoll()) overflow behaviour XXX |
7054 | ||
7055 | --jhi | |
86554af2 JH |
7056 | |
7057 | We need to do this the hard way. */ | |
7058 | ||
7059 | nv = Atof(PL_tokenbuf); | |
7060 | ||
7061 | /* See if we can make do with an integer value without loss of | |
7062 | precision. We use U_V to cast to a UV, because some | |
7063 | compilers have issues. Then we try casting it back and see | |
7064 | if it was the same [1]. We only do this if we know we | |
7065 | specifically read an integer. If floatit is true, then we | |
7066 | don't need to do the conversion at all. | |
7067 | ||
7068 | [1] Note that this is lossy if our NVs cannot preserve our | |
d6c14000 JH |
7069 | UVs. There are metaconfig defines NV_PRESERVES_UV (a boolean) |
7070 | and NV_PRESERVES_UV_BITS (a number), but in general we really | |
7071 | do hope all such potentially lossy platforms have strtou?ll? | |
7072 | to do a lossless IV/UV conversion. | |
7073 | ||
7074 | Maybe could do some tricks with DBL_DIG, LDBL_DIG and | |
7075 | DBL_MANT_DIG and LDBL_MANT_DIG (these are already available | |
7076 | as NV_DIG and NV_MANT_DIG)? | |
7077 | ||
7078 | --jhi | |
86554af2 JH |
7079 | */ |
7080 | { | |
7081 | UV uv = U_V(nv); | |
7082 | if (!floatit && (NV)uv == nv) { | |
7083 | if (uv <= IV_MAX) | |
7084 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ | |
7085 | else | |
7086 | sv_setuv(sv, uv); | |
7087 | } | |
7088 | else | |
7089 | sv_setnv(sv, nv); | |
96989be3 | 7090 | } |
0b7fceb9 | 7091 | #endif |
b8403495 JH |
7092 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7093 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 7094 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7095 | (floatit ? "float" : "integer"), |
7096 | sv, Nullsv, NULL); | |
378cc40b | 7097 | break; |
0b7fceb9 | 7098 | |
e312add1 | 7099 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7100 | case 'v': |
dd629d5b | 7101 | vstring: |
a7cb1f99 | 7102 | { |
a7cb1f99 GS |
7103 | char *pos = s; |
7104 | pos++; | |
dd629d5b | 7105 | while (isDIGIT(*pos) || *pos == '_') |
a7cb1f99 | 7106 | pos++; |
e526c9e6 | 7107 | if (!isALPHA(*pos)) { |
f83ee824 | 7108 | UV rev; |
560a288e | 7109 | U8 tmpbuf[UTF8_MAXLEN]; |
a7cb1f99 | 7110 | U8 *tmpend; |
3818b22b | 7111 | bool utf8 = FALSE; |
a7cb1f99 GS |
7112 | s++; /* get past 'v' */ |
7113 | ||
7114 | sv = NEWSV(92,5); | |
a7cb1f99 GS |
7115 | sv_setpvn(sv, "", 0); |
7116 | ||
e526c9e6 | 7117 | for (;;) { |
3cb0bbe5 GS |
7118 | if (*s == '0' && isDIGIT(s[1])) |
7119 | yyerror("Octal number in vector unsupported"); | |
dd629d5b GS |
7120 | rev = 0; |
7121 | { | |
7122 | /* this is atoi() that tolerates underscores */ | |
7123 | char *end = pos; | |
7124 | UV mult = 1; | |
7125 | while (--end >= s) { | |
7126 | UV orev; | |
7127 | if (*end == '_') | |
7128 | continue; | |
7129 | orev = rev; | |
7130 | rev += (*end - '0') * mult; | |
7131 | mult *= 10; | |
7132 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
7133 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
7134 | "Integer overflow in decimal number"); | |
7135 | } | |
7136 | } | |
e526c9e6 GS |
7137 | tmpend = uv_to_utf8(tmpbuf, rev); |
7138 | utf8 = utf8 || rev > 127; | |
7139 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
7140 | if (*pos == '.' && isDIGIT(pos[1])) | |
7141 | s = ++pos; | |
3818b22b | 7142 | else { |
e526c9e6 GS |
7143 | s = pos; |
7144 | break; | |
3818b22b | 7145 | } |
dd629d5b | 7146 | while (isDIGIT(*pos) || *pos == '_') |
e526c9e6 GS |
7147 | pos++; |
7148 | } | |
a7cb1f99 GS |
7149 | |
7150 | SvPOK_on(sv); | |
a7cb1f99 | 7151 | SvREADONLY_on(sv); |
560a288e | 7152 | if (utf8) { |
3818b22b | 7153 | SvUTF8_on(sv); |
560a288e GS |
7154 | sv_utf8_downgrade(sv, TRUE); |
7155 | } | |
a7cb1f99 GS |
7156 | } |
7157 | } | |
7158 | break; | |
79072805 | 7159 | } |
a687059c | 7160 | |
02aa26ce NT |
7161 | /* make the op for the constant and return */ |
7162 | ||
a7cb1f99 GS |
7163 | if (sv) |
7164 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
7165 | else | |
7166 | yylval.opval = Nullop; | |
a687059c | 7167 | |
378cc40b LW |
7168 | return s; |
7169 | } | |
7170 | ||
76e3520e | 7171 | STATIC char * |
cea2e8a9 | 7172 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7173 | { |
11343788 | 7174 | dTHR; |
79072805 | 7175 | register char *eol; |
378cc40b | 7176 | register char *t; |
79cb57f6 | 7177 | SV *stuff = newSVpvn("",0); |
79072805 | 7178 | bool needargs = FALSE; |
378cc40b | 7179 | |
79072805 | 7180 | while (!needargs) { |
c2e66d9e | 7181 | if (*s == '.' || *s == /*{*/'}') { |
79072805 | 7182 | /*SUPPRESS 530*/ |
51882d45 | 7183 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7184 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7185 | #else |
bf4acbe4 | 7186 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7187 | #endif |
6a65c6a0 | 7188 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7189 | break; |
7190 | } | |
3280af22 | 7191 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7192 | eol = strchr(s,'\n'); |
0f85fab0 | 7193 | if (!eol++) |
3280af22 | 7194 | eol = PL_bufend; |
0f85fab0 LW |
7195 | } |
7196 | else | |
3280af22 | 7197 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7198 | if (*s != '#') { |
a0d0e21e LW |
7199 | for (t = s; t < eol; t++) { |
7200 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7201 | needargs = FALSE; | |
7202 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7203 | } |
a0d0e21e LW |
7204 | if (*t == '@' || *t == '^') |
7205 | needargs = TRUE; | |
378cc40b | 7206 | } |
a0d0e21e | 7207 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
7208 | #ifndef PERL_STRICT_CR |
7209 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
7210 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7211 | end[-2] = '\n'; | |
7212 | end[-1] = '\0'; | |
7213 | SvCUR(stuff)--; | |
7214 | } | |
7215 | #endif | |
79072805 LW |
7216 | } |
7217 | s = eol; | |
3280af22 NIS |
7218 | if (PL_rsfp) { |
7219 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7220 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7221 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 7222 | if (!s) { |
3280af22 | 7223 | s = PL_bufptr; |
79072805 | 7224 | yyerror("Format not terminated"); |
378cc40b LW |
7225 | break; |
7226 | } | |
378cc40b | 7227 | } |
463ee0b2 | 7228 | incline(s); |
79072805 | 7229 | } |
a0d0e21e LW |
7230 | enough: |
7231 | if (SvCUR(stuff)) { | |
3280af22 | 7232 | PL_expect = XTERM; |
79072805 | 7233 | if (needargs) { |
3280af22 NIS |
7234 | PL_lex_state = LEX_NORMAL; |
7235 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7236 | force_next(','); |
7237 | } | |
a0d0e21e | 7238 | else |
3280af22 NIS |
7239 | PL_lex_state = LEX_FORMLINE; |
7240 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7241 | force_next(THING); |
3280af22 | 7242 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7243 | force_next(LSTOP); |
378cc40b | 7244 | } |
79072805 | 7245 | else { |
8990e307 | 7246 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7247 | PL_lex_formbrack = 0; |
7248 | PL_bufptr = s; | |
79072805 LW |
7249 | } |
7250 | return s; | |
378cc40b | 7251 | } |
a687059c | 7252 | |
76e3520e | 7253 | STATIC void |
cea2e8a9 | 7254 | S_set_csh(pTHX) |
a687059c | 7255 | { |
ae986130 | 7256 | #ifdef CSH |
3280af22 NIS |
7257 | if (!PL_cshlen) |
7258 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7259 | #endif |
a687059c | 7260 | } |
463ee0b2 | 7261 | |
ba6d6ac9 | 7262 | I32 |
864dbfa3 | 7263 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7264 | { |
11343788 | 7265 | dTHR; |
3280af22 NIS |
7266 | I32 oldsavestack_ix = PL_savestack_ix; |
7267 | CV* outsidecv = PL_compcv; | |
748a9306 | 7268 | AV* comppadlist; |
8990e307 | 7269 | |
3280af22 NIS |
7270 | if (PL_compcv) { |
7271 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7272 | } |
7766f137 | 7273 | SAVEI32(PL_subline); |
3280af22 NIS |
7274 | save_item(PL_subname); |
7275 | SAVEI32(PL_padix); | |
354992b1 | 7276 | SAVECOMPPAD(); |
3280af22 NIS |
7277 | SAVESPTR(PL_comppad_name); |
7278 | SAVESPTR(PL_compcv); | |
7279 | SAVEI32(PL_comppad_name_fill); | |
7280 | SAVEI32(PL_min_intro_pending); | |
7281 | SAVEI32(PL_max_intro_pending); | |
7282 | SAVEI32(PL_pad_reset_pending); | |
7283 | ||
7284 | PL_compcv = (CV*)NEWSV(1104,0); | |
7285 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7286 | CvFLAGS(PL_compcv) |= flags; | |
7287 | ||
7288 | PL_comppad = newAV(); | |
7289 | av_push(PL_comppad, Nullsv); | |
7290 | PL_curpad = AvARRAY(PL_comppad); | |
7291 | PL_comppad_name = newAV(); | |
7292 | PL_comppad_name_fill = 0; | |
7293 | PL_min_intro_pending = 0; | |
7294 | PL_padix = 0; | |
57843af0 | 7295 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7296 | #ifdef USE_THREADS |
79cb57f6 | 7297 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7298 | PL_curpad[0] = (SV*)newAV(); |
7299 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7300 | #endif /* USE_THREADS */ |
748a9306 LW |
7301 | |
7302 | comppadlist = newAV(); | |
7303 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7304 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7305 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7306 | |
3280af22 NIS |
7307 | CvPADLIST(PL_compcv) = comppadlist; |
7308 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7309 | #ifdef USE_THREADS |
533c011a NIS |
7310 | CvOWNER(PL_compcv) = 0; |
7311 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7312 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7313 | #endif /* USE_THREADS */ |
748a9306 | 7314 | |
8990e307 LW |
7315 | return oldsavestack_ix; |
7316 | } | |
7317 | ||
7318 | int | |
864dbfa3 | 7319 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7320 | { |
11343788 | 7321 | dTHR; |
faef0170 | 7322 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7323 | yyerror(s); |
faef0170 | 7324 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7325 | return 0; |
8990e307 LW |
7326 | } |
7327 | ||
7328 | int | |
864dbfa3 | 7329 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7330 | { |
11343788 | 7331 | dTHR; |
68dc0745 | 7332 | char *where = NULL; |
7333 | char *context = NULL; | |
7334 | int contlen = -1; | |
46fc3d4c | 7335 | SV *msg; |
463ee0b2 | 7336 | |
3280af22 | 7337 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7338 | where = "at EOF"; |
3280af22 NIS |
7339 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7340 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7341 | while (isSPACE(*PL_oldoldbufptr)) | |
7342 | PL_oldoldbufptr++; | |
7343 | context = PL_oldoldbufptr; | |
7344 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7345 | } |
3280af22 NIS |
7346 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7347 | PL_oldbufptr != PL_bufptr) { | |
7348 | while (isSPACE(*PL_oldbufptr)) | |
7349 | PL_oldbufptr++; | |
7350 | context = PL_oldbufptr; | |
7351 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7352 | } |
7353 | else if (yychar > 255) | |
68dc0745 | 7354 | where = "next token ???"; |
cdfb297e GS |
7355 | #ifdef USE_PURE_BISON |
7356 | /* GNU Bison sets the value -2 */ | |
7357 | else if (yychar == -2) { | |
7358 | #else | |
463ee0b2 | 7359 | else if ((yychar & 127) == 127) { |
cdfb297e | 7360 | #endif |
3280af22 NIS |
7361 | if (PL_lex_state == LEX_NORMAL || |
7362 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7363 | where = "at end of line"; |
3280af22 | 7364 | else if (PL_lex_inpat) |
68dc0745 | 7365 | where = "within pattern"; |
463ee0b2 | 7366 | else |
68dc0745 | 7367 | where = "within string"; |
463ee0b2 | 7368 | } |
46fc3d4c | 7369 | else { |
79cb57f6 | 7370 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7371 | if (yychar < 32) |
cea2e8a9 | 7372 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7373 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7374 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7375 | else |
cea2e8a9 | 7376 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7377 | where = SvPVX(where_sv); |
463ee0b2 | 7378 | } |
46fc3d4c | 7379 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7380 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7381 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7382 | if (context) |
cea2e8a9 | 7383 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7384 | else |
cea2e8a9 | 7385 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7386 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7387 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7388 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7389 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7390 | PL_multi_end = 0; |
a0d0e21e | 7391 | } |
faef0170 | 7392 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7393 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7394 | else |
5a844595 | 7395 | qerror(msg); |
c7d6bfb2 GS |
7396 | if (PL_error_count >= 10) { |
7397 | if (PL_in_eval && SvCUR(ERRSV)) | |
7398 | Perl_croak(aTHX_ "%_%s has too many errors.\n", | |
7399 | ERRSV, CopFILE(PL_curcop)); | |
7400 | else | |
7401 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
7402 | CopFILE(PL_curcop)); | |
7403 | } | |
3280af22 NIS |
7404 | PL_in_my = 0; |
7405 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7406 | return 0; |
7407 | } | |
4e35701f | 7408 | |
b250498f | 7409 | STATIC char* |
01ec43d0 GS |
7410 | S_swallow_bom(pTHX_ char *s) |
7411 | { | |
b250498f GS |
7412 | STRLEN slen; |
7413 | slen = SvCUR(PL_linestr); | |
7414 | switch (*s) { | |
7415 | case -1: | |
01ec43d0 GS |
7416 | if ((s[1] & 255) == 254) { |
7417 | /* UTF-16 little-endian */ | |
7418 | #ifndef PERL_NO_UTF16_FILTER | |
7419 | U8 *news; | |
b250498f | 7420 | #endif |
01ec43d0 GS |
7421 | s += 2; |
7422 | if (*s == 0 && s[1] == 0) /* UTF-32 little-endian */ | |
7423 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7424 | #ifndef PERL_NO_UTF16_FILTER | |
7425 | filter_add(S_utf16rev_textfilter, NULL); | |
7426 | New(898, news, (PL_bufend - s) * 3 / 2 + 1, U8); | |
7427 | PL_bufend = utf16_to_utf8((U16*)s, news, PL_bufend - s); | |
7428 | s = news; | |
b250498f | 7429 | #else |
01ec43d0 | 7430 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7431 | #endif |
01ec43d0 GS |
7432 | } |
7433 | break; | |
b250498f GS |
7434 | |
7435 | case -2: | |
01ec43d0 GS |
7436 | if ((s[1] & 255) == 255) { /* UTF-16 big-endian */ |
7437 | #ifndef PERL_NO_UTF16_FILTER | |
7438 | U8 *news; | |
7439 | filter_add(S_utf16_textfilter, NULL); | |
7440 | New(898, news, (PL_bufend - s) * 3 / 2 + 1, U8); | |
7441 | PL_bufend = utf16_to_utf8((U16*)s, news, PL_bufend - s); | |
7442 | s = news; | |
b250498f | 7443 | #else |
01ec43d0 | 7444 | Perl_croak(aTHX_ "Unsupported script encoding"); |
b250498f | 7445 | #endif |
01ec43d0 GS |
7446 | } |
7447 | break; | |
7448 | ||
7449 | case -17: | |
7450 | if (slen > 2 && (s[1] & 255) == 187 && (s[2] & 255) == 191) { | |
7451 | s += 3; /* UTF-8 */ | |
7452 | } | |
7453 | break; | |
7454 | case 0: | |
7455 | if (slen > 3 && s[1] == 0 && /* UTF-32 big-endian */ | |
7456 | s[2] & 255 == 254 && s[3] & 255 == 255) | |
7457 | { | |
7458 | Perl_croak(aTHX_ "Unsupported script encoding"); | |
7459 | } | |
7460 | } | |
7461 | return s; | |
b250498f | 7462 | } |
4755096e GS |
7463 | |
7464 | #ifdef PERL_OBJECT | |
7465 | #include "XSUB.h" | |
7466 | #endif | |
7467 | ||
7468 | /* | |
7469 | * restore_rsfp | |
7470 | * Restore a source filter. | |
7471 | */ | |
7472 | ||
7473 | static void | |
7474 | restore_rsfp(pTHXo_ void *f) | |
7475 | { | |
7476 | PerlIO *fp = (PerlIO*)f; | |
7477 | ||
7478 | if (PL_rsfp == PerlIO_stdin()) | |
7479 | PerlIO_clearerr(PL_rsfp); | |
7480 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7481 | PerlIO_close(PL_rsfp); | |
7482 | PL_rsfp = fp; | |
7483 | } |