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 | ||
155aba94 | 329 | #if 0 |
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); |
feee6ba4 JH |
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? */ | |
7e2040f0 | 1211 | bool has_utf = FALSE; /* embedded \x{} */ |
02aa26ce | 1212 | I32 len; /* ? */ |
012bcf8d GS |
1213 | UV uv; |
1214 | ||
ac2262e3 | 1215 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1216 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1217 | : UTF; | |
ac2262e3 | 1218 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1219 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1220 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1221 | : UTF; |
dff6d3cd | 1222 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1223 | PL_lex_inpat |
4a2d328f | 1224 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1225 | : ""; |
79072805 LW |
1226 | |
1227 | while (s < send || dorange) { | |
02aa26ce | 1228 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1229 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1230 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1231 | if (dorange) { |
02aa26ce | 1232 | I32 i; /* current expanded character */ |
8ada0baa | 1233 | I32 min; /* first character in range */ |
02aa26ce NT |
1234 | I32 max; /* last character in range */ |
1235 | ||
1236 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1237 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1238 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1239 | d -= 2; /* eat the first char and the - */ |
1240 | ||
8ada0baa JH |
1241 | min = (U8)*d; /* first char in range */ |
1242 | max = (U8)d[1]; /* last char in range */ | |
1243 | ||
1244 | #ifndef ASCIIish | |
1245 | if ((isLOWER(min) && isLOWER(max)) || | |
1246 | (isUPPER(min) && isUPPER(max))) { | |
1247 | if (isLOWER(min)) { | |
1248 | for (i = min; i <= max; i++) | |
1249 | if (isLOWER(i)) | |
1250 | *d++ = i; | |
1251 | } else { | |
1252 | for (i = min; i <= max; i++) | |
1253 | if (isUPPER(i)) | |
1254 | *d++ = i; | |
1255 | } | |
1256 | } | |
1257 | else | |
1258 | #endif | |
1259 | for (i = min; i <= max; i++) | |
1260 | *d++ = i; | |
02aa26ce NT |
1261 | |
1262 | /* mark the range as done, and continue */ | |
79072805 LW |
1263 | dorange = FALSE; |
1264 | continue; | |
1265 | } | |
02aa26ce NT |
1266 | |
1267 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1268 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1269 | if (utf) { |
a176fa2a | 1270 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1271 | s++; |
1272 | continue; | |
1273 | } | |
79072805 LW |
1274 | dorange = TRUE; |
1275 | s++; | |
1276 | } | |
1277 | } | |
02aa26ce NT |
1278 | |
1279 | /* if we get here, we're not doing a transliteration */ | |
1280 | ||
0f5d15d6 IZ |
1281 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1282 | except for the last char, which will be done separately. */ | |
3280af22 | 1283 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1284 | if (s[2] == '#') { |
1285 | while (s < send && *s != ')') | |
1286 | *d++ = *s++; | |
155aba94 GS |
1287 | } |
1288 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1289 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1290 | { | |
cc6b7395 | 1291 | I32 count = 1; |
0f5d15d6 | 1292 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1293 | char c; |
1294 | ||
d9f97599 GS |
1295 | while (count && (c = *regparse)) { |
1296 | if (c == '\\' && regparse[1]) | |
1297 | regparse++; | |
cc6b7395 IZ |
1298 | else if (c == '{') |
1299 | count++; | |
1300 | else if (c == '}') | |
1301 | count--; | |
d9f97599 | 1302 | regparse++; |
cc6b7395 | 1303 | } |
5bdf89e7 IZ |
1304 | if (*regparse != ')') { |
1305 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1306 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1307 | } |
0f5d15d6 | 1308 | while (s < regparse) |
cc6b7395 IZ |
1309 | *d++ = *s++; |
1310 | } | |
748a9306 | 1311 | } |
02aa26ce NT |
1312 | |
1313 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1314 | else if (*s == '#' && PL_lex_inpat && |
1315 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1316 | while (s+1 < send && *s != '\n') |
1317 | *d++ = *s++; | |
1318 | } | |
02aa26ce NT |
1319 | |
1320 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
7e2040f0 GS |
1321 | else if (*s == '@' && s[1] |
1322 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$", s[1]))) | |
79072805 | 1323 | break; |
02aa26ce NT |
1324 | |
1325 | /* check for embedded scalars. only stop if we're sure it's a | |
1326 | variable. | |
1327 | */ | |
79072805 | 1328 | else if (*s == '$') { |
3280af22 | 1329 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1330 | break; |
c277df42 | 1331 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1332 | break; /* in regexp, $ might be tail anchor */ |
1333 | } | |
02aa26ce | 1334 | |
a0ed51b3 LW |
1335 | /* (now in tr/// code again) */ |
1336 | ||
d008e5eb | 1337 | if (*s & 0x80 && thisutf) { |
012bcf8d GS |
1338 | (void)utf8_to_uv((U8*)s, &len); |
1339 | if (len == 1) { | |
1340 | /* illegal UTF8, make it valid */ | |
012bcf8d | 1341 | char *old_pvx = SvPVX(sv); |
bee7c419 GS |
1342 | /* need space for one extra char (NOTE: SvCUR() not set here) */ |
1343 | d = SvGROW(sv, SvLEN(sv) + 1) + (d - old_pvx); | |
012bcf8d GS |
1344 | d = (char*)uv_to_utf8((U8*)d, (U8)*s++); |
1345 | } | |
1346 | else { | |
1347 | while (len--) | |
1348 | *d++ = *s++; | |
1349 | } | |
1350 | has_utf = TRUE; | |
1351 | continue; | |
a0ed51b3 LW |
1352 | } |
1353 | ||
02aa26ce | 1354 | /* backslashes */ |
79072805 LW |
1355 | if (*s == '\\' && s+1 < send) { |
1356 | s++; | |
02aa26ce NT |
1357 | |
1358 | /* some backslashes we leave behind */ | |
c9f97d15 | 1359 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1360 | *d++ = '\\'; |
1361 | *d++ = *s++; | |
1362 | continue; | |
1363 | } | |
02aa26ce NT |
1364 | |
1365 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1366 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1367 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1368 | { |
d008e5eb | 1369 | dTHR; /* only for ckWARN */ |
599cee73 | 1370 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1371 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1372 | *--s = '$'; |
1373 | break; | |
1374 | } | |
02aa26ce NT |
1375 | |
1376 | /* string-change backslash escapes */ | |
3280af22 | 1377 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1378 | --s; |
1379 | break; | |
1380 | } | |
02aa26ce NT |
1381 | |
1382 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1383 | switch (*s) { |
02aa26ce NT |
1384 | |
1385 | /* quoted - in transliterations */ | |
79072805 | 1386 | case '-': |
3280af22 | 1387 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1388 | *d++ = *s++; |
1389 | continue; | |
1390 | } | |
1391 | /* FALL THROUGH */ | |
1392 | default: | |
11b8faa4 JH |
1393 | { |
1394 | dTHR; | |
7e84c16c | 1395 | if (ckWARN(WARN_MISC) && isALNUM(*s)) |
e476b1b5 | 1396 | Perl_warner(aTHX_ WARN_MISC, |
11b8faa4 JH |
1397 | "Unrecognized escape \\%c passed through", |
1398 | *s); | |
1399 | /* default action is to copy the quoted character */ | |
1400 | *d++ = *s++; | |
1401 | continue; | |
1402 | } | |
02aa26ce NT |
1403 | |
1404 | /* \132 indicates an octal constant */ | |
79072805 LW |
1405 | case '0': case '1': case '2': case '3': |
1406 | case '4': case '5': case '6': case '7': | |
b21ed0a9 | 1407 | len = 0; /* disallow underscores */ |
012bcf8d | 1408 | uv = (UV)scan_oct(s, 3, &len); |
79072805 | 1409 | s += len; |
012bcf8d | 1410 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1411 | |
1412 | /* \x24 indicates a hex constant */ | |
79072805 | 1413 | case 'x': |
a0ed51b3 LW |
1414 | ++s; |
1415 | if (*s == '{') { | |
1416 | char* e = strchr(s, '}'); | |
adaeee49 | 1417 | if (!e) { |
a0ed51b3 | 1418 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1419 | e = s; |
1420 | } | |
b21ed0a9 | 1421 | len = 1; /* allow underscores */ |
012bcf8d GS |
1422 | uv = (UV)scan_hex(s + 1, e - s - 1, &len); |
1423 | s = e + 1; | |
a0ed51b3 LW |
1424 | } |
1425 | else { | |
b21ed0a9 | 1426 | len = 0; /* disallow underscores */ |
012bcf8d GS |
1427 | uv = (UV)scan_hex(s, 2, &len); |
1428 | s += len; | |
1429 | } | |
1430 | ||
1431 | NUM_ESCAPE_INSERT: | |
1432 | /* Insert oct or hex escaped character. | |
1433 | * There will always enough room in sv since such escapes will | |
1434 | * be longer than any utf8 sequence they can end up as | |
1435 | */ | |
1436 | if (uv > 127) { | |
1437 | if (!thisutf && !has_utf && uv > 255) { | |
1438 | /* might need to recode whatever we have accumulated so far | |
1439 | * if it contains any hibit chars | |
1440 | */ | |
1441 | int hicount = 0; | |
1442 | char *c; | |
1443 | for (c = SvPVX(sv); c < d; c++) { | |
1444 | if (*c & 0x80) | |
1445 | hicount++; | |
1446 | } | |
1447 | if (hicount) { | |
1448 | char *old_pvx = SvPVX(sv); | |
1449 | char *src, *dst; | |
1450 | d = SvGROW(sv, SvCUR(sv) + hicount + 1) + (d - old_pvx); | |
1451 | ||
1452 | src = d - 1; | |
1453 | d += hicount; | |
1454 | dst = d - 1; | |
1455 | ||
1456 | while (src < dst) { | |
1457 | if (*src & 0x80) { | |
1458 | dst--; | |
1459 | uv_to_utf8((U8*)dst, (U8)*src--); | |
1460 | dst--; | |
1461 | } | |
1462 | else { | |
1463 | *dst-- = *src--; | |
1464 | } | |
1465 | } | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | if (thisutf || uv > 255) { | |
1470 | d = (char*)uv_to_utf8((U8*)d, uv); | |
7e2040f0 | 1471 | has_utf = TRUE; |
012bcf8d | 1472 | } |
a0ed51b3 | 1473 | else { |
012bcf8d | 1474 | *d++ = (char)uv; |
a0ed51b3 | 1475 | } |
012bcf8d GS |
1476 | } |
1477 | else { | |
1478 | *d++ = (char)uv; | |
a0ed51b3 | 1479 | } |
79072805 | 1480 | continue; |
02aa26ce | 1481 | |
4a2d328f IZ |
1482 | /* \N{latin small letter a} is a named character */ |
1483 | case 'N': | |
423cee85 JH |
1484 | ++s; |
1485 | if (*s == '{') { | |
1486 | char* e = strchr(s, '}'); | |
155aba94 | 1487 | SV *res; |
423cee85 JH |
1488 | STRLEN len; |
1489 | char *str; | |
423cee85 JH |
1490 | |
1491 | if (!e) { | |
5777a3f7 | 1492 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1493 | e = s - 1; |
1494 | goto cont_scan; | |
1495 | } | |
1496 | res = newSVpvn(s + 1, e - s - 1); | |
1497 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1498 | res, Nullsv, "\\N{...}" ); |
423cee85 | 1499 | str = SvPV(res,len); |
f08d6ad9 GS |
1500 | if (!has_utf && SvUTF8(res)) { |
1501 | char *ostart = SvPVX(sv); | |
1502 | SvCUR_set(sv, d - ostart); | |
1503 | SvPOK_on(sv); | |
1504 | sv_utf8_upgrade(sv); | |
1505 | d = SvPVX(sv) + SvCUR(sv); | |
e1992b6d | 1506 | has_utf = TRUE; |
f08d6ad9 | 1507 | } |
423cee85 JH |
1508 | if (len > e - s + 4) { |
1509 | char *odest = SvPVX(sv); | |
1510 | ||
1511 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1512 | d = SvPVX(sv) + (d - odest); | |
1513 | } | |
1514 | Copy(str, d, len, char); | |
1515 | d += len; | |
1516 | SvREFCNT_dec(res); | |
1517 | cont_scan: | |
1518 | s = e + 1; | |
1519 | } | |
1520 | else | |
5777a3f7 | 1521 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1522 | continue; |
1523 | ||
02aa26ce | 1524 | /* \c is a control character */ |
79072805 LW |
1525 | case 'c': |
1526 | s++; | |
9d116dd7 JH |
1527 | #ifdef EBCDIC |
1528 | *d = *s++; | |
1529 | if (isLOWER(*d)) | |
1530 | *d = toUPPER(*d); | |
774a9426 GS |
1531 | *d = toCTRL(*d); |
1532 | d++; | |
9d116dd7 | 1533 | #else |
bbce6d69 | 1534 | len = *s++; |
1535 | *d++ = toCTRL(len); | |
9d116dd7 | 1536 | #endif |
79072805 | 1537 | continue; |
02aa26ce NT |
1538 | |
1539 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1540 | case 'b': |
1541 | *d++ = '\b'; | |
1542 | break; | |
1543 | case 'n': | |
1544 | *d++ = '\n'; | |
1545 | break; | |
1546 | case 'r': | |
1547 | *d++ = '\r'; | |
1548 | break; | |
1549 | case 'f': | |
1550 | *d++ = '\f'; | |
1551 | break; | |
1552 | case 't': | |
1553 | *d++ = '\t'; | |
1554 | break; | |
34a3fe2a PP |
1555 | #ifdef EBCDIC |
1556 | case 'e': | |
1557 | *d++ = '\047'; /* CP 1047 */ | |
1558 | break; | |
1559 | case 'a': | |
1560 | *d++ = '\057'; /* CP 1047 */ | |
1561 | break; | |
1562 | #else | |
79072805 LW |
1563 | case 'e': |
1564 | *d++ = '\033'; | |
1565 | break; | |
1566 | case 'a': | |
1567 | *d++ = '\007'; | |
1568 | break; | |
34a3fe2a | 1569 | #endif |
02aa26ce NT |
1570 | } /* end switch */ |
1571 | ||
79072805 LW |
1572 | s++; |
1573 | continue; | |
02aa26ce NT |
1574 | } /* end if (backslash) */ |
1575 | ||
79072805 | 1576 | *d++ = *s++; |
02aa26ce NT |
1577 | } /* while loop to process each character */ |
1578 | ||
1579 | /* terminate the string and set up the sv */ | |
79072805 | 1580 | *d = '\0'; |
463ee0b2 | 1581 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 | 1582 | SvPOK_on(sv); |
7e2040f0 GS |
1583 | if (has_utf) |
1584 | SvUTF8_on(sv); | |
79072805 | 1585 | |
02aa26ce | 1586 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1587 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1588 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1589 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1590 | } |
02aa26ce | 1591 | |
9b599b2a | 1592 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1593 | if (s > PL_bufptr) { |
1594 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1595 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1596 | sv, Nullsv, |
3280af22 | 1597 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1598 | ? "tr" |
3280af22 | 1599 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1600 | ? "s" |
1601 | : "qq"))); | |
79072805 | 1602 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1603 | } else |
8990e307 | 1604 | SvREFCNT_dec(sv); |
79072805 LW |
1605 | return s; |
1606 | } | |
1607 | ||
ffb4593c NT |
1608 | /* S_intuit_more |
1609 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1610 | * FALSE otherwise. | |
ffb4593c NT |
1611 | * |
1612 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1613 | * | |
1614 | * ->[ and ->{ return TRUE | |
1615 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1616 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1617 | * if we're in a pattern and the first char is a { | |
1618 | * {4,5} (any digits around the comma) returns FALSE | |
1619 | * if we're in a pattern and the first char is a [ | |
1620 | * [] returns FALSE | |
1621 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1622 | * character class or not. It has to deal with things like | |
1623 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1624 | * anything else returns TRUE | |
1625 | */ | |
1626 | ||
9cbb5ea2 GS |
1627 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1628 | ||
76e3520e | 1629 | STATIC int |
cea2e8a9 | 1630 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1631 | { |
3280af22 | 1632 | if (PL_lex_brackets) |
79072805 LW |
1633 | return TRUE; |
1634 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1635 | return TRUE; | |
1636 | if (*s != '{' && *s != '[') | |
1637 | return FALSE; | |
3280af22 | 1638 | if (!PL_lex_inpat) |
79072805 LW |
1639 | return TRUE; |
1640 | ||
1641 | /* In a pattern, so maybe we have {n,m}. */ | |
1642 | if (*s == '{') { | |
1643 | s++; | |
1644 | if (!isDIGIT(*s)) | |
1645 | return TRUE; | |
1646 | while (isDIGIT(*s)) | |
1647 | s++; | |
1648 | if (*s == ',') | |
1649 | s++; | |
1650 | while (isDIGIT(*s)) | |
1651 | s++; | |
1652 | if (*s == '}') | |
1653 | return FALSE; | |
1654 | return TRUE; | |
1655 | ||
1656 | } | |
1657 | ||
1658 | /* On the other hand, maybe we have a character class */ | |
1659 | ||
1660 | s++; | |
1661 | if (*s == ']' || *s == '^') | |
1662 | return FALSE; | |
1663 | else { | |
ffb4593c | 1664 | /* this is terrifying, and it works */ |
79072805 LW |
1665 | int weight = 2; /* let's weigh the evidence */ |
1666 | char seen[256]; | |
f27ffc4a | 1667 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1668 | char *send = strchr(s,']'); |
3280af22 | 1669 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1670 | |
1671 | if (!send) /* has to be an expression */ | |
1672 | return TRUE; | |
1673 | ||
1674 | Zero(seen,256,char); | |
1675 | if (*s == '$') | |
1676 | weight -= 3; | |
1677 | else if (isDIGIT(*s)) { | |
1678 | if (s[1] != ']') { | |
1679 | if (isDIGIT(s[1]) && s[2] == ']') | |
1680 | weight -= 10; | |
1681 | } | |
1682 | else | |
1683 | weight -= 100; | |
1684 | } | |
1685 | for (; s < send; s++) { | |
1686 | last_un_char = un_char; | |
1687 | un_char = (unsigned char)*s; | |
1688 | switch (*s) { | |
1689 | case '@': | |
1690 | case '&': | |
1691 | case '$': | |
1692 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1693 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1694 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1695 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1696 | weight -= 100; |
1697 | else | |
1698 | weight -= 10; | |
1699 | } | |
1700 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1701 | strchr("[#!%*<>()-=",s[1])) { |
1702 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1703 | weight -= 10; |
1704 | else | |
1705 | weight -= 1; | |
1706 | } | |
1707 | break; | |
1708 | case '\\': | |
1709 | un_char = 254; | |
1710 | if (s[1]) { | |
93a17b20 | 1711 | if (strchr("wds]",s[1])) |
79072805 LW |
1712 | weight += 100; |
1713 | else if (seen['\''] || seen['"']) | |
1714 | weight += 1; | |
93a17b20 | 1715 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1716 | weight += 40; |
1717 | else if (isDIGIT(s[1])) { | |
1718 | weight += 40; | |
1719 | while (s[1] && isDIGIT(s[1])) | |
1720 | s++; | |
1721 | } | |
1722 | } | |
1723 | else | |
1724 | weight += 100; | |
1725 | break; | |
1726 | case '-': | |
1727 | if (s[1] == '\\') | |
1728 | weight += 50; | |
93a17b20 | 1729 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1730 | weight += 30; |
93a17b20 | 1731 | if (strchr("zZ79~",s[1])) |
79072805 | 1732 | weight += 30; |
f27ffc4a GS |
1733 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1734 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1735 | break; |
1736 | default: | |
93a17b20 | 1737 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1738 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1739 | char *d = tmpbuf; | |
1740 | while (isALPHA(*s)) | |
1741 | *d++ = *s++; | |
1742 | *d = '\0'; | |
1743 | if (keyword(tmpbuf, d - tmpbuf)) | |
1744 | weight -= 150; | |
1745 | } | |
1746 | if (un_char == last_un_char + 1) | |
1747 | weight += 5; | |
1748 | weight -= seen[un_char]; | |
1749 | break; | |
1750 | } | |
1751 | seen[un_char]++; | |
1752 | } | |
1753 | if (weight >= 0) /* probably a character class */ | |
1754 | return FALSE; | |
1755 | } | |
1756 | ||
1757 | return TRUE; | |
1758 | } | |
ffed7fef | 1759 | |
ffb4593c NT |
1760 | /* |
1761 | * S_intuit_method | |
1762 | * | |
1763 | * Does all the checking to disambiguate | |
1764 | * foo bar | |
1765 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1766 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1767 | * | |
1768 | * First argument is the stuff after the first token, e.g. "bar". | |
1769 | * | |
1770 | * Not a method if bar is a filehandle. | |
1771 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1772 | * Not a method if it's really "Foo $bar" | |
1773 | * Method if it's "foo $bar" | |
1774 | * Not a method if it's really "print foo $bar" | |
1775 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1776 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1777 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1778 | * => |
1779 | */ | |
1780 | ||
76e3520e | 1781 | STATIC int |
cea2e8a9 | 1782 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1783 | { |
1784 | char *s = start + (*start == '$'); | |
3280af22 | 1785 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1786 | STRLEN len; |
1787 | GV* indirgv; | |
1788 | ||
1789 | if (gv) { | |
b6c543e3 | 1790 | CV *cv; |
a0d0e21e LW |
1791 | if (GvIO(gv)) |
1792 | return 0; | |
b6c543e3 IZ |
1793 | if ((cv = GvCVu(gv))) { |
1794 | char *proto = SvPVX(cv); | |
1795 | if (proto) { | |
1796 | if (*proto == ';') | |
1797 | proto++; | |
1798 | if (*proto == '*') | |
1799 | return 0; | |
1800 | } | |
1801 | } else | |
a0d0e21e LW |
1802 | gv = 0; |
1803 | } | |
8903cb82 | 1804 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1805 | /* start is the beginning of the possible filehandle/object, |
1806 | * and s is the end of it | |
1807 | * tmpbuf is a copy of it | |
1808 | */ | |
1809 | ||
a0d0e21e | 1810 | if (*start == '$') { |
3280af22 | 1811 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1812 | return 0; |
1813 | s = skipspace(s); | |
3280af22 NIS |
1814 | PL_bufptr = start; |
1815 | PL_expect = XREF; | |
a0d0e21e LW |
1816 | return *s == '(' ? FUNCMETH : METHOD; |
1817 | } | |
1818 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1819 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1820 | len -= 2; | |
1821 | tmpbuf[len] = '\0'; | |
1822 | goto bare_package; | |
1823 | } | |
1824 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1825 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1826 | return 0; |
1827 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1828 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1829 | s = skipspace(s); |
3280af22 | 1830 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1831 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1832 | bare_package: |
3280af22 | 1833 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1834 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1835 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1836 | PL_expect = XTERM; | |
a0d0e21e | 1837 | force_next(WORD); |
3280af22 | 1838 | PL_bufptr = s; |
a0d0e21e LW |
1839 | return *s == '(' ? FUNCMETH : METHOD; |
1840 | } | |
1841 | } | |
1842 | return 0; | |
1843 | } | |
1844 | ||
ffb4593c NT |
1845 | /* |
1846 | * S_incl_perldb | |
1847 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1848 | * is set, it will return the contents of that, otherwise a | |
1849 | * compile-time require of perl5db.pl. | |
1850 | */ | |
1851 | ||
76e3520e | 1852 | STATIC char* |
cea2e8a9 | 1853 | S_incl_perldb(pTHX) |
a0d0e21e | 1854 | { |
3280af22 | 1855 | if (PL_perldb) { |
76e3520e | 1856 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1857 | |
1858 | if (pdb) | |
1859 | return pdb; | |
61bb5906 | 1860 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1861 | return "BEGIN { require 'perl5db.pl' }"; |
1862 | } | |
1863 | return ""; | |
1864 | } | |
1865 | ||
1866 | ||
16d20bd9 AD |
1867 | /* Encoded script support. filter_add() effectively inserts a |
1868 | * 'pre-processing' function into the current source input stream. | |
1869 | * Note that the filter function only applies to the current source file | |
1870 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1871 | * | |
1872 | * The datasv parameter (which may be NULL) can be used to pass | |
1873 | * private data to this instance of the filter. The filter function | |
1874 | * can recover the SV using the FILTER_DATA macro and use it to | |
1875 | * store private buffers and state information. | |
1876 | * | |
1877 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1878 | * and the IoDIRP field is used to store the function pointer, |
1879 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1880 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1881 | * private use must be set using malloc'd pointers. | |
1882 | */ | |
16d20bd9 AD |
1883 | |
1884 | SV * | |
864dbfa3 | 1885 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1886 | { |
f4c556ac GS |
1887 | if (!funcp) |
1888 | return Nullsv; | |
1889 | ||
3280af22 NIS |
1890 | if (!PL_rsfp_filters) |
1891 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1892 | if (!datasv) |
8c52afec | 1893 | datasv = NEWSV(255,0); |
16d20bd9 | 1894 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1895 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1896 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1897 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1898 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1899 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1900 | av_unshift(PL_rsfp_filters, 1); |
1901 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1902 | return(datasv); |
1903 | } | |
1904 | ||
1905 | ||
1906 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1907 | void |
864dbfa3 | 1908 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1909 | { |
e0c19803 | 1910 | SV *datasv; |
f4c556ac | 1911 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1912 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1913 | return; |
1914 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1915 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1916 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1917 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1918 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1919 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1920 | |
16d20bd9 AD |
1921 | return; |
1922 | } | |
1923 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1924 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1925 | } |
1926 | ||
1927 | ||
1928 | /* Invoke the n'th filter function for the current rsfp. */ | |
1929 | I32 | |
864dbfa3 | 1930 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1931 | |
1932 | ||
1933 | /* 0 = read one text line */ | |
a0d0e21e | 1934 | { |
16d20bd9 AD |
1935 | filter_t funcp; |
1936 | SV *datasv = NULL; | |
e50aee73 | 1937 | |
3280af22 | 1938 | if (!PL_rsfp_filters) |
16d20bd9 | 1939 | return -1; |
3280af22 | 1940 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1941 | /* Provide a default input filter to make life easy. */ |
1942 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1943 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1944 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1945 | if (maxlen) { |
1946 | /* Want a block */ | |
1947 | int len ; | |
1948 | int old_len = SvCUR(buf_sv) ; | |
1949 | ||
1950 | /* ensure buf_sv is large enough */ | |
1951 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1952 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1953 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1954 | return -1; /* error */ |
1955 | else | |
1956 | return 0 ; /* end of file */ | |
1957 | } | |
16d20bd9 AD |
1958 | SvCUR_set(buf_sv, old_len + len) ; |
1959 | } else { | |
1960 | /* Want a line */ | |
3280af22 NIS |
1961 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1962 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1963 | return -1; /* error */ |
1964 | else | |
1965 | return 0 ; /* end of file */ | |
1966 | } | |
16d20bd9 AD |
1967 | } |
1968 | return SvCUR(buf_sv); | |
1969 | } | |
1970 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1971 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1972 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1973 | "filter_read %d: skipped (filter deleted)\n", | |
1974 | idx)); | |
16d20bd9 AD |
1975 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1976 | } | |
1977 | /* Get function pointer hidden within datasv */ | |
1978 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1979 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1980 | "filter_read %d: via function %p (%s)\n", | |
1981 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1982 | /* Call function. The function is expected to */ |
1983 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1984 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1985 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1986 | } |
1987 | ||
76e3520e | 1988 | STATIC char * |
cea2e8a9 | 1989 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1990 | { |
c39cd008 | 1991 | #ifdef PERL_CR_FILTER |
3280af22 | 1992 | if (!PL_rsfp_filters) { |
c39cd008 | 1993 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1994 | } |
1995 | #endif | |
3280af22 | 1996 | if (PL_rsfp_filters) { |
16d20bd9 | 1997 | |
55497cff | 1998 | if (!append) |
1999 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2000 | if (FILTER_READ(0, sv, 0) > 0) |
2001 | return ( SvPVX(sv) ) ; | |
2002 | else | |
2003 | return Nullch ; | |
2004 | } | |
9d116dd7 | 2005 | else |
fd049845 | 2006 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2007 | } |
2008 | ||
2009 | ||
748a9306 LW |
2010 | #ifdef DEBUGGING |
2011 | static char* exp_name[] = | |
09bef843 SB |
2012 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
2013 | "ATTRTERM", "TERMBLOCK" | |
2014 | }; | |
748a9306 | 2015 | #endif |
463ee0b2 | 2016 | |
02aa26ce NT |
2017 | /* |
2018 | yylex | |
2019 | ||
2020 | Works out what to call the token just pulled out of the input | |
2021 | stream. The yacc parser takes care of taking the ops we return and | |
2022 | stitching them into a tree. | |
2023 | ||
2024 | Returns: | |
2025 | PRIVATEREF | |
2026 | ||
2027 | Structure: | |
2028 | if read an identifier | |
2029 | if we're in a my declaration | |
2030 | croak if they tried to say my($foo::bar) | |
2031 | build the ops for a my() declaration | |
2032 | if it's an access to a my() variable | |
2033 | are we in a sort block? | |
2034 | croak if my($a); $a <=> $b | |
2035 | build ops for access to a my() variable | |
2036 | if in a dq string, and they've said @foo and we can't find @foo | |
2037 | croak | |
2038 | build ops for a bareword | |
2039 | if we already built the token before, use it. | |
2040 | */ | |
2041 | ||
bf4acbe4 GS |
2042 | #ifdef __SC__ |
2043 | #pragma segment Perl_yylex | |
2044 | #endif | |
864dbfa3 GS |
2045 | int |
2046 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 2047 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 2048 | #else |
cea2e8a9 | 2049 | Perl_yylex(pTHX) |
864dbfa3 | 2050 | #endif |
378cc40b | 2051 | { |
11343788 | 2052 | dTHR; |
79072805 | 2053 | register char *s; |
378cc40b | 2054 | register char *d; |
79072805 | 2055 | register I32 tmp; |
463ee0b2 | 2056 | STRLEN len; |
161b471a NIS |
2057 | GV *gv = Nullgv; |
2058 | GV **gvp = 0; | |
a687059c | 2059 | |
a1a0e61e TD |
2060 | #ifdef USE_PURE_BISON |
2061 | yylval_pointer = lvalp; | |
2062 | yychar_pointer = lcharp; | |
2063 | #endif | |
2064 | ||
02aa26ce | 2065 | /* check if there's an identifier for us to look at */ |
3280af22 | 2066 | if (PL_pending_ident) { |
02aa26ce | 2067 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
2068 | char pit = PL_pending_ident; |
2069 | PL_pending_ident = 0; | |
bbce6d69 | 2070 | |
02aa26ce NT |
2071 | /* if we're in a my(), we can't allow dynamics here. |
2072 | $foo'bar has already been turned into $foo::bar, so | |
2073 | just check for colons. | |
2074 | ||
2075 | if it's a legal name, the OP is a PADANY. | |
2076 | */ | |
3280af22 | 2077 | if (PL_in_my) { |
77ca0c92 | 2078 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
2079 | if (strchr(PL_tokenbuf,':')) |
2080 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
2081 | "variable %s in \"our\"", | |
2082 | PL_tokenbuf)); | |
77ca0c92 LW |
2083 | tmp = pad_allocmy(PL_tokenbuf); |
2084 | } | |
2085 | else { | |
2086 | if (strchr(PL_tokenbuf,':')) | |
2087 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 2088 | |
77ca0c92 LW |
2089 | yylval.opval = newOP(OP_PADANY, 0); |
2090 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
2091 | return PRIVATEREF; | |
2092 | } | |
bbce6d69 | 2093 | } |
2094 | ||
02aa26ce NT |
2095 | /* |
2096 | build the ops for accesses to a my() variable. | |
2097 | ||
2098 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
2099 | then used in a comparison. This catches most, but not | |
2100 | all cases. For instance, it catches | |
2101 | sort { my($a); $a <=> $b } | |
2102 | but not | |
2103 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2104 | (although why you'd do that is anyone's guess). | |
2105 | */ | |
2106 | ||
3280af22 | 2107 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2108 | #ifdef USE_THREADS |
54b9620d | 2109 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2110 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2111 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2112 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2113 | { |
2faa37cc | 2114 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2115 | yylval.opval->op_targ = tmp; |
2116 | return PRIVATEREF; | |
2117 | } | |
2118 | #endif /* USE_THREADS */ | |
3280af22 | 2119 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2120 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2121 | /* might be an "our" variable" */ |
f472eb5c | 2122 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2123 | /* build ops for a bareword */ |
f472eb5c GS |
2124 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2125 | sv_catpvn(sym, "::", 2); | |
2126 | sv_catpv(sym, PL_tokenbuf+1); | |
2127 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2128 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2129 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2130 | (PL_in_eval |
f472eb5c GS |
2131 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2132 | : TRUE | |
77ca0c92 LW |
2133 | ), |
2134 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2135 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2136 | : SVt_PVHV)); | |
2137 | return WORD; | |
2138 | } | |
2139 | ||
02aa26ce | 2140 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2141 | if (PL_last_lop_op == OP_SORT && |
2142 | PL_tokenbuf[0] == '$' && | |
2143 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2144 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2145 | { |
3280af22 NIS |
2146 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2147 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2148 | d++) |
2149 | { | |
2150 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2151 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2152 | PL_tokenbuf); |
a863c7d1 | 2153 | } |
bbce6d69 | 2154 | } |
2155 | } | |
bbce6d69 | 2156 | |
a863c7d1 MB |
2157 | yylval.opval = newOP(OP_PADANY, 0); |
2158 | yylval.opval->op_targ = tmp; | |
2159 | return PRIVATEREF; | |
2160 | } | |
bbce6d69 | 2161 | } |
2162 | ||
02aa26ce NT |
2163 | /* |
2164 | Whine if they've said @foo in a doublequoted string, | |
2165 | and @foo isn't a variable we can find in the symbol | |
2166 | table. | |
2167 | */ | |
3280af22 NIS |
2168 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2169 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
8593bda5 GS |
2170 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
2171 | && ckWARN(WARN_AMBIGUOUS)) | |
2172 | { | |
2173 | /* Downgraded from fatal to warning 20000522 mjd */ | |
2174 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
2175 | "Possible unintended interpolation of %s in string", | |
2176 | PL_tokenbuf); | |
2177 | } | |
bbce6d69 | 2178 | } |
2179 | ||
02aa26ce | 2180 | /* build ops for a bareword */ |
3280af22 | 2181 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2182 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2183 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2184 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2185 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2186 | : SVt_PVHV)); |
2187 | return WORD; | |
2188 | } | |
2189 | ||
02aa26ce NT |
2190 | /* no identifier pending identification */ |
2191 | ||
3280af22 | 2192 | switch (PL_lex_state) { |
79072805 LW |
2193 | #ifdef COMMENTARY |
2194 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2195 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2196 | break; | |
2197 | #endif | |
2198 | ||
09bef843 | 2199 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2200 | case LEX_KNOWNEXT: |
3280af22 NIS |
2201 | PL_nexttoke--; |
2202 | yylval = PL_nextval[PL_nexttoke]; | |
2203 | if (!PL_nexttoke) { | |
2204 | PL_lex_state = PL_lex_defer; | |
2205 | PL_expect = PL_lex_expect; | |
2206 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2207 | } |
3280af22 | 2208 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2209 | |
02aa26ce | 2210 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2211 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2212 | */ |
79072805 LW |
2213 | case LEX_INTERPCASEMOD: |
2214 | #ifdef DEBUGGING | |
3280af22 | 2215 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2216 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2217 | #endif |
02aa26ce | 2218 | /* handle \E or end of string */ |
3280af22 | 2219 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2220 | char oldmod; |
02aa26ce NT |
2221 | |
2222 | /* if at a \E */ | |
3280af22 NIS |
2223 | if (PL_lex_casemods) { |
2224 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2225 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2226 | |
3280af22 NIS |
2227 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2228 | PL_bufptr += 2; | |
2229 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2230 | } |
79072805 LW |
2231 | return ')'; |
2232 | } | |
3280af22 NIS |
2233 | if (PL_bufptr != PL_bufend) |
2234 | PL_bufptr += 2; | |
2235 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2236 | return yylex(); |
79072805 LW |
2237 | } |
2238 | else { | |
3280af22 | 2239 | s = PL_bufptr + 1; |
79072805 LW |
2240 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2241 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2242 | if (strchr("LU", *s) && |
3280af22 | 2243 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2244 | { |
3280af22 | 2245 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2246 | return ')'; |
2247 | } | |
3280af22 NIS |
2248 | if (PL_lex_casemods > 10) { |
2249 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2250 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2251 | SAVEFREEPV(newlb); |
3280af22 | 2252 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2253 | } |
2254 | } | |
3280af22 NIS |
2255 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2256 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2257 | PL_lex_state = LEX_INTERPCONCAT; | |
2258 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2259 | force_next('('); |
2260 | if (*s == 'l') | |
3280af22 | 2261 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2262 | else if (*s == 'u') |
3280af22 | 2263 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2264 | else if (*s == 'L') |
3280af22 | 2265 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2266 | else if (*s == 'U') |
3280af22 | 2267 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2268 | else if (*s == 'Q') |
3280af22 | 2269 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2270 | else |
cea2e8a9 | 2271 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2272 | PL_bufptr = s + 1; |
79072805 | 2273 | force_next(FUNC); |
3280af22 NIS |
2274 | if (PL_lex_starts) { |
2275 | s = PL_bufptr; | |
2276 | PL_lex_starts = 0; | |
79072805 LW |
2277 | Aop(OP_CONCAT); |
2278 | } | |
2279 | else | |
cea2e8a9 | 2280 | return yylex(); |
79072805 LW |
2281 | } |
2282 | ||
55497cff | 2283 | case LEX_INTERPPUSH: |
2284 | return sublex_push(); | |
2285 | ||
79072805 | 2286 | case LEX_INTERPSTART: |
3280af22 | 2287 | if (PL_bufptr == PL_bufend) |
79072805 | 2288 | return sublex_done(); |
3280af22 NIS |
2289 | PL_expect = XTERM; |
2290 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2291 | PL_lex_state = LEX_INTERPNORMAL; | |
2292 | if (PL_lex_dojoin) { | |
2293 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2294 | force_next(','); |
554b3eca | 2295 | #ifdef USE_THREADS |
533c011a NIS |
2296 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2297 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2298 | force_next(PRIVATEREF); |
2299 | #else | |
a0d0e21e | 2300 | force_ident("\"", '$'); |
554b3eca | 2301 | #endif /* USE_THREADS */ |
3280af22 | 2302 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2303 | force_next('$'); |
3280af22 | 2304 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2305 | force_next('('); |
3280af22 | 2306 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2307 | force_next(FUNC); |
2308 | } | |
3280af22 NIS |
2309 | if (PL_lex_starts++) { |
2310 | s = PL_bufptr; | |
79072805 LW |
2311 | Aop(OP_CONCAT); |
2312 | } | |
cea2e8a9 | 2313 | return yylex(); |
79072805 LW |
2314 | |
2315 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2316 | if (intuit_more(PL_bufptr)) { |
2317 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2318 | break; |
2319 | } | |
2320 | /* FALL THROUGH */ | |
2321 | ||
2322 | case LEX_INTERPEND: | |
3280af22 NIS |
2323 | if (PL_lex_dojoin) { |
2324 | PL_lex_dojoin = FALSE; | |
2325 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2326 | return ')'; |
2327 | } | |
43a16006 | 2328 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2329 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2330 | { |
e9fa98b2 | 2331 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2332 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2333 | PL_lex_repl = Nullsv; |
2334 | } | |
79072805 LW |
2335 | /* FALLTHROUGH */ |
2336 | case LEX_INTERPCONCAT: | |
2337 | #ifdef DEBUGGING | |
3280af22 | 2338 | if (PL_lex_brackets) |
cea2e8a9 | 2339 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2340 | #endif |
3280af22 | 2341 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2342 | return sublex_done(); |
2343 | ||
3280af22 NIS |
2344 | if (SvIVX(PL_linestr) == '\'') { |
2345 | SV *sv = newSVsv(PL_linestr); | |
2346 | if (!PL_lex_inpat) | |
76e3520e | 2347 | sv = tokeq(sv); |
3280af22 | 2348 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2349 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2350 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2351 | s = PL_bufend; |
79072805 LW |
2352 | } |
2353 | else { | |
3280af22 | 2354 | s = scan_const(PL_bufptr); |
79072805 | 2355 | if (*s == '\\') |
3280af22 | 2356 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2357 | else |
3280af22 | 2358 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2359 | } |
2360 | ||
3280af22 NIS |
2361 | if (s != PL_bufptr) { |
2362 | PL_nextval[PL_nexttoke] = yylval; | |
2363 | PL_expect = XTERM; | |
79072805 | 2364 | force_next(THING); |
3280af22 | 2365 | if (PL_lex_starts++) |
79072805 LW |
2366 | Aop(OP_CONCAT); |
2367 | else { | |
3280af22 | 2368 | PL_bufptr = s; |
cea2e8a9 | 2369 | return yylex(); |
79072805 LW |
2370 | } |
2371 | } | |
2372 | ||
cea2e8a9 | 2373 | return yylex(); |
a0d0e21e | 2374 | case LEX_FORMLINE: |
3280af22 NIS |
2375 | PL_lex_state = LEX_NORMAL; |
2376 | s = scan_formline(PL_bufptr); | |
2377 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2378 | goto rightbracket; |
2379 | OPERATOR(';'); | |
79072805 LW |
2380 | } |
2381 | ||
3280af22 NIS |
2382 | s = PL_bufptr; |
2383 | PL_oldoldbufptr = PL_oldbufptr; | |
2384 | PL_oldbufptr = s; | |
79072805 | 2385 | DEBUG_p( { |
bf49b057 GS |
2386 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2387 | exp_name[PL_expect], s); | |
79072805 | 2388 | } ) |
463ee0b2 LW |
2389 | |
2390 | retry: | |
378cc40b LW |
2391 | switch (*s) { |
2392 | default: | |
7e2040f0 | 2393 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2394 | goto keylookup; |
cea2e8a9 | 2395 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2396 | case 4: |
2397 | case 26: | |
2398 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2399 | case 0: |
3280af22 NIS |
2400 | if (!PL_rsfp) { |
2401 | PL_last_uni = 0; | |
2402 | PL_last_lop = 0; | |
2403 | if (PL_lex_brackets) | |
d98d5fff | 2404 | yyerror("Missing right curly or square bracket"); |
79072805 | 2405 | TOKEN(0); |
463ee0b2 | 2406 | } |
3280af22 | 2407 | if (s++ < PL_bufend) |
a687059c | 2408 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2409 | PL_last_uni = 0; |
2410 | PL_last_lop = 0; | |
2411 | if (!PL_in_eval && !PL_preambled) { | |
2412 | PL_preambled = TRUE; | |
2413 | sv_setpv(PL_linestr,incl_perldb()); | |
2414 | if (SvCUR(PL_linestr)) | |
2415 | sv_catpv(PL_linestr,";"); | |
2416 | if (PL_preambleav){ | |
2417 | while(AvFILLp(PL_preambleav) >= 0) { | |
2418 | SV *tmpsv = av_shift(PL_preambleav); | |
2419 | sv_catsv(PL_linestr, tmpsv); | |
2420 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2421 | sv_free(tmpsv); |
2422 | } | |
3280af22 NIS |
2423 | sv_free((SV*)PL_preambleav); |
2424 | PL_preambleav = NULL; | |
91b7def8 | 2425 | } |
3280af22 NIS |
2426 | if (PL_minus_n || PL_minus_p) { |
2427 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2428 | if (PL_minus_l) | |
2429 | sv_catpv(PL_linestr,"chomp;"); | |
2430 | if (PL_minus_a) { | |
8fd239a7 CS |
2431 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2432 | if (gv) | |
2433 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2434 | if (PL_minus_F) { |
2435 | if (strchr("/'\"", *PL_splitstr) | |
2436 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2437 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2438 | else { |
2439 | char delim; | |
2440 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2441 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2442 | delim = *s; |
cea2e8a9 | 2443 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2444 | "q" + (delim == '\''), delim); |
3280af22 | 2445 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2446 | if (*s == '\\') |
3280af22 NIS |
2447 | sv_catpvn(PL_linestr, "\\", 1); |
2448 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2449 | } |
cea2e8a9 | 2450 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2451 | } |
2304df62 AD |
2452 | } |
2453 | else | |
3280af22 | 2454 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2455 | } |
79072805 | 2456 | } |
3280af22 NIS |
2457 | sv_catpv(PL_linestr, "\n"); |
2458 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2459 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2460 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2461 | SV *sv = NEWSV(85,0); |
2462 | ||
2463 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2464 | sv_setsv(sv,PL_linestr); |
57843af0 | 2465 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2466 | } |
79072805 | 2467 | goto retry; |
a687059c | 2468 | } |
e929a76b | 2469 | do { |
3280af22 | 2470 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2471 | fake_eof: |
3280af22 NIS |
2472 | if (PL_rsfp) { |
2473 | if (PL_preprocess && !PL_in_eval) | |
2474 | (void)PerlProc_pclose(PL_rsfp); | |
2475 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2476 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2477 | else |
3280af22 NIS |
2478 | (void)PerlIO_close(PL_rsfp); |
2479 | PL_rsfp = Nullfp; | |
4a9ae47a | 2480 | PL_doextract = FALSE; |
395c3793 | 2481 | } |
3280af22 NIS |
2482 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2483 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2484 | sv_catpv(PL_linestr,";}"); | |
2485 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2486 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2487 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2488 | goto retry; |
2489 | } | |
3280af22 NIS |
2490 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2491 | sv_setpv(PL_linestr,""); | |
79072805 | 2492 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2493 | } |
3280af22 | 2494 | if (PL_doextract) { |
a0d0e21e | 2495 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2496 | PL_doextract = FALSE; |
a0d0e21e LW |
2497 | |
2498 | /* Incest with pod. */ | |
2499 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2500 | sv_setpv(PL_linestr, ""); |
2501 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2502 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2503 | PL_doextract = FALSE; | |
a0d0e21e LW |
2504 | } |
2505 | } | |
463ee0b2 | 2506 | incline(s); |
3280af22 NIS |
2507 | } while (PL_doextract); |
2508 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2509 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2510 | SV *sv = NEWSV(85,0); |
a687059c | 2511 | |
93a17b20 | 2512 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2513 | sv_setsv(sv,PL_linestr); |
57843af0 | 2514 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2515 | } |
3280af22 | 2516 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2517 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2518 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2519 | s++; |
a0d0e21e | 2520 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2521 | s++; |
44a8e56a | 2522 | d = Nullch; |
3280af22 | 2523 | if (!PL_in_eval) { |
44a8e56a | 2524 | if (*s == '#' && *(s+1) == '!') |
2525 | d = s + 2; | |
2526 | #ifdef ALTERNATE_SHEBANG | |
2527 | else { | |
2528 | static char as[] = ALTERNATE_SHEBANG; | |
2529 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2530 | d = s + (sizeof(as) - 1); | |
2531 | } | |
2532 | #endif /* ALTERNATE_SHEBANG */ | |
2533 | } | |
2534 | if (d) { | |
b8378b72 | 2535 | char *ipath; |
774d564b | 2536 | char *ipathend; |
b8378b72 | 2537 | |
774d564b | 2538 | while (isSPACE(*d)) |
b8378b72 CS |
2539 | d++; |
2540 | ipath = d; | |
774d564b | 2541 | while (*d && !isSPACE(*d)) |
2542 | d++; | |
2543 | ipathend = d; | |
2544 | ||
2545 | #ifdef ARG_ZERO_IS_SCRIPT | |
2546 | if (ipathend > ipath) { | |
2547 | /* | |
2548 | * HP-UX (at least) sets argv[0] to the script name, | |
2549 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2550 | * at least, set argv[0] to the basename of the Perl | |
2551 | * interpreter. So, having found "#!", we'll set it right. | |
2552 | */ | |
2553 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2554 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2555 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2556 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2557 | SvSETMAGIC(x); |
2558 | } | |
774d564b | 2559 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2560 | } |
774d564b | 2561 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2562 | |
2563 | /* | |
2564 | * Look for options. | |
2565 | */ | |
748a9306 | 2566 | d = instr(s,"perl -"); |
84e30d1a | 2567 | if (!d) { |
748a9306 | 2568 | d = instr(s,"perl"); |
84e30d1a GS |
2569 | #if defined(DOSISH) |
2570 | /* avoid getting into infinite loops when shebang | |
2571 | * line contains "Perl" rather than "perl" */ | |
2572 | if (!d) { | |
2573 | for (d = ipathend-4; d >= ipath; --d) { | |
2574 | if ((*d == 'p' || *d == 'P') | |
2575 | && !ibcmp(d, "perl", 4)) | |
2576 | { | |
2577 | break; | |
2578 | } | |
2579 | } | |
2580 | if (d < ipath) | |
2581 | d = Nullch; | |
2582 | } | |
2583 | #endif | |
2584 | } | |
44a8e56a | 2585 | #ifdef ALTERNATE_SHEBANG |
2586 | /* | |
2587 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2588 | * character that can be part of a Perl expression, then if | |
2589 | * we see it but not "perl", we're probably looking at the | |
2590 | * start of Perl code, not a request to hand off to some | |
2591 | * other interpreter. Similarly, if "perl" is there, but | |
2592 | * not in the first 'word' of the line, we assume the line | |
2593 | * contains the start of the Perl program. | |
44a8e56a | 2594 | */ |
2595 | if (d && *s != '#') { | |
774d564b | 2596 | char *c = ipath; |
44a8e56a | 2597 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2598 | c++; | |
2599 | if (c < d) | |
2600 | d = Nullch; /* "perl" not in first word; ignore */ | |
2601 | else | |
2602 | *s = '#'; /* Don't try to parse shebang line */ | |
2603 | } | |
774d564b | 2604 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2605 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2606 | if (!d && |
44a8e56a | 2607 | *s == '#' && |
774d564b | 2608 | ipathend > ipath && |
3280af22 | 2609 | !PL_minus_c && |
748a9306 | 2610 | !instr(s,"indir") && |
3280af22 | 2611 | instr(PL_origargv[0],"perl")) |
748a9306 | 2612 | { |
9f68db38 | 2613 | char **newargv; |
9f68db38 | 2614 | |
774d564b | 2615 | *ipathend = '\0'; |
2616 | s = ipathend + 1; | |
3280af22 | 2617 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2618 | s++; |
3280af22 NIS |
2619 | if (s < PL_bufend) { |
2620 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2621 | newargv[1] = s; |
3280af22 | 2622 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2623 | s++; |
2624 | *s = '\0'; | |
3280af22 | 2625 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2626 | } |
2627 | else | |
3280af22 | 2628 | newargv = PL_origargv; |
774d564b | 2629 | newargv[0] = ipath; |
80252599 | 2630 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2631 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2632 | } |
bf4acbe4 | 2633 | #endif |
748a9306 | 2634 | if (d) { |
3280af22 NIS |
2635 | U32 oldpdb = PL_perldb; |
2636 | bool oldn = PL_minus_n; | |
2637 | bool oldp = PL_minus_p; | |
748a9306 LW |
2638 | |
2639 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2640 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2641 | |
2642 | if (*d++ == '-') { | |
8cc95fdb | 2643 | do { |
2644 | if (*d == 'M' || *d == 'm') { | |
2645 | char *m = d; | |
2646 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2647 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2648 | (int)(d - m), m); |
2649 | } | |
2650 | d = moreswitches(d); | |
2651 | } while (d); | |
155aba94 GS |
2652 | if ((PERLDB_LINE && !oldpdb) || |
2653 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2654 | /* if we have already added "LINE: while (<>) {", |
2655 | we must not do it again */ | |
748a9306 | 2656 | { |
3280af22 NIS |
2657 | sv_setpv(PL_linestr, ""); |
2658 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2659 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2660 | PL_preambled = FALSE; | |
84902520 | 2661 | if (PERLDB_LINE) |
3280af22 | 2662 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2663 | goto retry; |
2664 | } | |
a0d0e21e | 2665 | } |
79072805 | 2666 | } |
9f68db38 | 2667 | } |
79072805 | 2668 | } |
3280af22 NIS |
2669 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2670 | PL_bufptr = s; | |
2671 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2672 | return yylex(); |
ae986130 | 2673 | } |
378cc40b | 2674 | goto retry; |
4fdae800 | 2675 | case '\r': |
6a27c188 | 2676 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2677 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2678 | Perl_croak(aTHX_ | |
cc507455 | 2679 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2680 | #endif |
4fdae800 | 2681 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2682 | #ifdef MACOS_TRADITIONAL |
2683 | case '\312': | |
2684 | #endif | |
378cc40b LW |
2685 | s++; |
2686 | goto retry; | |
378cc40b | 2687 | case '#': |
e929a76b | 2688 | case '\n': |
3280af22 | 2689 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2690 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2691 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2692 | CopLINE_dec(PL_curcop); | |
2693 | incline(s); | |
2694 | } | |
3280af22 | 2695 | d = PL_bufend; |
a687059c | 2696 | while (s < d && *s != '\n') |
378cc40b | 2697 | s++; |
0f85fab0 | 2698 | if (s < d) |
378cc40b | 2699 | s++; |
463ee0b2 | 2700 | incline(s); |
3280af22 NIS |
2701 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2702 | PL_bufptr = s; | |
2703 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2704 | return yylex(); |
a687059c | 2705 | } |
378cc40b | 2706 | } |
a687059c | 2707 | else { |
378cc40b | 2708 | *s = '\0'; |
3280af22 | 2709 | PL_bufend = s; |
a687059c | 2710 | } |
378cc40b LW |
2711 | goto retry; |
2712 | case '-': | |
79072805 | 2713 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2714 | s++; |
3280af22 | 2715 | PL_bufptr = s; |
748a9306 LW |
2716 | tmp = *s++; |
2717 | ||
bf4acbe4 | 2718 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2719 | s++; |
2720 | ||
2721 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2722 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2723 | OPERATOR('-'); /* unary minus */ |
2724 | } | |
3280af22 NIS |
2725 | PL_last_uni = PL_oldbufptr; |
2726 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2727 | switch (tmp) { |
79072805 LW |
2728 | case 'r': FTST(OP_FTEREAD); |
2729 | case 'w': FTST(OP_FTEWRITE); | |
2730 | case 'x': FTST(OP_FTEEXEC); | |
2731 | case 'o': FTST(OP_FTEOWNED); | |
2732 | case 'R': FTST(OP_FTRREAD); | |
2733 | case 'W': FTST(OP_FTRWRITE); | |
2734 | case 'X': FTST(OP_FTREXEC); | |
2735 | case 'O': FTST(OP_FTROWNED); | |
2736 | case 'e': FTST(OP_FTIS); | |
2737 | case 'z': FTST(OP_FTZERO); | |
2738 | case 's': FTST(OP_FTSIZE); | |
2739 | case 'f': FTST(OP_FTFILE); | |
2740 | case 'd': FTST(OP_FTDIR); | |
2741 | case 'l': FTST(OP_FTLINK); | |
2742 | case 'p': FTST(OP_FTPIPE); | |
2743 | case 'S': FTST(OP_FTSOCK); | |
2744 | case 'u': FTST(OP_FTSUID); | |
2745 | case 'g': FTST(OP_FTSGID); | |
2746 | case 'k': FTST(OP_FTSVTX); | |
2747 | case 'b': FTST(OP_FTBLK); | |
2748 | case 'c': FTST(OP_FTCHR); | |
2749 | case 't': FTST(OP_FTTTY); | |
2750 | case 'T': FTST(OP_FTTEXT); | |
2751 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2752 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2753 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2754 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2755 | default: |
cea2e8a9 | 2756 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2757 | break; |
2758 | } | |
2759 | } | |
a687059c LW |
2760 | tmp = *s++; |
2761 | if (*s == tmp) { | |
2762 | s++; | |
3280af22 | 2763 | if (PL_expect == XOPERATOR) |
79072805 LW |
2764 | TERM(POSTDEC); |
2765 | else | |
2766 | OPERATOR(PREDEC); | |
2767 | } | |
2768 | else if (*s == '>') { | |
2769 | s++; | |
2770 | s = skipspace(s); | |
7e2040f0 | 2771 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2772 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2773 | TOKEN(ARROW); |
79072805 | 2774 | } |
748a9306 LW |
2775 | else if (*s == '$') |
2776 | OPERATOR(ARROW); | |
463ee0b2 | 2777 | else |
748a9306 | 2778 | TERM(ARROW); |
a687059c | 2779 | } |
3280af22 | 2780 | if (PL_expect == XOPERATOR) |
79072805 LW |
2781 | Aop(OP_SUBTRACT); |
2782 | else { | |
3280af22 | 2783 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2784 | check_uni(); |
79072805 | 2785 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2786 | } |
79072805 | 2787 | |
378cc40b | 2788 | case '+': |
a687059c LW |
2789 | tmp = *s++; |
2790 | if (*s == tmp) { | |
378cc40b | 2791 | s++; |
3280af22 | 2792 | if (PL_expect == XOPERATOR) |
79072805 LW |
2793 | TERM(POSTINC); |
2794 | else | |
2795 | OPERATOR(PREINC); | |
378cc40b | 2796 | } |
3280af22 | 2797 | if (PL_expect == XOPERATOR) |
79072805 LW |
2798 | Aop(OP_ADD); |
2799 | else { | |
3280af22 | 2800 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2801 | check_uni(); |
a687059c | 2802 | OPERATOR('+'); |
2f3197b3 | 2803 | } |
a687059c | 2804 | |
378cc40b | 2805 | case '*': |
3280af22 NIS |
2806 | if (PL_expect != XOPERATOR) { |
2807 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2808 | PL_expect = XOPERATOR; | |
2809 | force_ident(PL_tokenbuf, '*'); | |
2810 | if (!*PL_tokenbuf) | |
a0d0e21e | 2811 | PREREF('*'); |
79072805 | 2812 | TERM('*'); |
a687059c | 2813 | } |
79072805 LW |
2814 | s++; |
2815 | if (*s == '*') { | |
a687059c | 2816 | s++; |
79072805 | 2817 | PWop(OP_POW); |
a687059c | 2818 | } |
79072805 LW |
2819 | Mop(OP_MULTIPLY); |
2820 | ||
378cc40b | 2821 | case '%': |
3280af22 | 2822 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2823 | ++s; |
2824 | Mop(OP_MODULO); | |
a687059c | 2825 | } |
3280af22 NIS |
2826 | PL_tokenbuf[0] = '%'; |
2827 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2828 | if (!PL_tokenbuf[1]) { | |
2829 | if (s == PL_bufend) | |
bbce6d69 | 2830 | yyerror("Final % should be \\% or %name"); |
2831 | PREREF('%'); | |
a687059c | 2832 | } |
3280af22 | 2833 | PL_pending_ident = '%'; |
bbce6d69 | 2834 | TERM('%'); |
a687059c | 2835 | |
378cc40b | 2836 | case '^': |
79072805 | 2837 | s++; |
a0d0e21e | 2838 | BOop(OP_BIT_XOR); |
79072805 | 2839 | case '[': |
3280af22 | 2840 | PL_lex_brackets++; |
79072805 | 2841 | /* FALL THROUGH */ |
378cc40b | 2842 | case '~': |
378cc40b | 2843 | case ',': |
378cc40b LW |
2844 | tmp = *s++; |
2845 | OPERATOR(tmp); | |
a0d0e21e LW |
2846 | case ':': |
2847 | if (s[1] == ':') { | |
2848 | len = 0; | |
2849 | goto just_a_word; | |
2850 | } | |
2851 | s++; | |
09bef843 SB |
2852 | switch (PL_expect) { |
2853 | OP *attrs; | |
2854 | case XOPERATOR: | |
2855 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2856 | break; | |
2857 | PL_bufptr = s; /* update in case we back off */ | |
2858 | goto grabattrs; | |
2859 | case XATTRBLOCK: | |
2860 | PL_expect = XBLOCK; | |
2861 | goto grabattrs; | |
2862 | case XATTRTERM: | |
2863 | PL_expect = XTERMBLOCK; | |
2864 | grabattrs: | |
2865 | s = skipspace(s); | |
2866 | attrs = Nullop; | |
7e2040f0 | 2867 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2868 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2869 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2870 | if (tmp < 0) tmp = -tmp; | |
2871 | switch (tmp) { | |
2872 | case KEY_or: | |
2873 | case KEY_and: | |
2874 | case KEY_for: | |
2875 | case KEY_unless: | |
2876 | case KEY_if: | |
2877 | case KEY_while: | |
2878 | case KEY_until: | |
2879 | goto got_attrs; | |
2880 | default: | |
2881 | break; | |
2882 | } | |
2883 | } | |
09bef843 SB |
2884 | if (*d == '(') { |
2885 | d = scan_str(d,TRUE,TRUE); | |
2886 | if (!d) { | |
2887 | if (PL_lex_stuff) { | |
2888 | SvREFCNT_dec(PL_lex_stuff); | |
2889 | PL_lex_stuff = Nullsv; | |
2890 | } | |
2891 | /* MUST advance bufptr here to avoid bogus | |
2892 | "at end of line" context messages from yyerror(). | |
2893 | */ | |
2894 | PL_bufptr = s + len; | |
2895 | yyerror("Unterminated attribute parameter in attribute list"); | |
2896 | if (attrs) | |
2897 | op_free(attrs); | |
2898 | return 0; /* EOF indicator */ | |
2899 | } | |
2900 | } | |
2901 | if (PL_lex_stuff) { | |
2902 | SV *sv = newSVpvn(s, len); | |
2903 | sv_catsv(sv, PL_lex_stuff); | |
2904 | attrs = append_elem(OP_LIST, attrs, | |
2905 | newSVOP(OP_CONST, 0, sv)); | |
2906 | SvREFCNT_dec(PL_lex_stuff); | |
2907 | PL_lex_stuff = Nullsv; | |
2908 | } | |
2909 | else { | |
2910 | attrs = append_elem(OP_LIST, attrs, | |
2911 | newSVOP(OP_CONST, 0, | |
2912 | newSVpvn(s, len))); | |
2913 | } | |
2914 | s = skipspace(d); | |
0120eecf | 2915 | if (*s == ':' && s[1] != ':') |
09bef843 | 2916 | s = skipspace(s+1); |
0120eecf GS |
2917 | else if (s == d) |
2918 | break; /* require real whitespace or :'s */ | |
09bef843 | 2919 | } |
f9829d6b GS |
2920 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
2921 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
2922 | char q = ((*s == '\'') ? '"' : '\''); |
2923 | /* If here for an expression, and parsed no attrs, back off. */ | |
2924 | if (tmp == '=' && !attrs) { | |
2925 | s = PL_bufptr; | |
2926 | break; | |
2927 | } | |
2928 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2929 | context messages from yyerror(). | |
2930 | */ | |
2931 | PL_bufptr = s; | |
2932 | if (!*s) | |
2933 | yyerror("Unterminated attribute list"); | |
2934 | else | |
2935 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2936 | q, *s, q)); | |
2937 | if (attrs) | |
2938 | op_free(attrs); | |
2939 | OPERATOR(':'); | |
2940 | } | |
f9829d6b | 2941 | got_attrs: |
09bef843 SB |
2942 | if (attrs) { |
2943 | PL_nextval[PL_nexttoke].opval = attrs; | |
2944 | force_next(THING); | |
2945 | } | |
2946 | TOKEN(COLONATTR); | |
2947 | } | |
a0d0e21e | 2948 | OPERATOR(':'); |
8990e307 LW |
2949 | case '(': |
2950 | s++; | |
3280af22 NIS |
2951 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2952 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2953 | else |
3280af22 | 2954 | PL_expect = XTERM; |
a0d0e21e | 2955 | TOKEN('('); |
378cc40b | 2956 | case ';': |
f4dd75d9 | 2957 | CLINE; |
378cc40b LW |
2958 | tmp = *s++; |
2959 | OPERATOR(tmp); | |
2960 | case ')': | |
378cc40b | 2961 | tmp = *s++; |
16d20bd9 AD |
2962 | s = skipspace(s); |
2963 | if (*s == '{') | |
2964 | PREBLOCK(tmp); | |
378cc40b | 2965 | TERM(tmp); |
79072805 LW |
2966 | case ']': |
2967 | s++; | |
3280af22 | 2968 | if (PL_lex_brackets <= 0) |
d98d5fff | 2969 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2970 | else |
3280af22 NIS |
2971 | --PL_lex_brackets; |
2972 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2973 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2974 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2975 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2976 | } |
2977 | } | |
4633a7c4 | 2978 | TERM(']'); |
79072805 LW |
2979 | case '{': |
2980 | leftbracket: | |
79072805 | 2981 | s++; |
3280af22 NIS |
2982 | if (PL_lex_brackets > 100) { |
2983 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2984 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2985 | SAVEFREEPV(newlb); |
3280af22 | 2986 | PL_lex_brackstack = newlb; |
8990e307 LW |
2987 | } |
2988 | } | |
3280af22 | 2989 | switch (PL_expect) { |
a0d0e21e | 2990 | case XTERM: |
3280af22 | 2991 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2992 | s--; |
2993 | PRETERMBLOCK(DO); | |
2994 | } | |
3280af22 NIS |
2995 | if (PL_oldoldbufptr == PL_last_lop) |
2996 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2997 | else |
3280af22 | 2998 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2999 | OPERATOR(HASHBRACK); |
a0d0e21e | 3000 | case XOPERATOR: |
bf4acbe4 | 3001 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3002 | s++; |
44a8e56a | 3003 | d = s; |
3280af22 NIS |
3004 | PL_tokenbuf[0] = '\0'; |
3005 | if (d < PL_bufend && *d == '-') { | |
3006 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3007 | d++; |
bf4acbe4 | 3008 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3009 | d++; |
3010 | } | |
7e2040f0 | 3011 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3012 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3013 | FALSE, &len); |
bf4acbe4 | 3014 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3015 | d++; |
3016 | if (*d == '}') { | |
3280af22 | 3017 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3018 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3019 | if (minus) | |
3020 | force_next('-'); | |
748a9306 LW |
3021 | } |
3022 | } | |
3023 | /* FALL THROUGH */ | |
09bef843 | 3024 | case XATTRBLOCK: |
748a9306 | 3025 | case XBLOCK: |
3280af22 NIS |
3026 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3027 | PL_expect = XSTATE; | |
a0d0e21e | 3028 | break; |
09bef843 | 3029 | case XATTRTERM: |
a0d0e21e | 3030 | case XTERMBLOCK: |
3280af22 NIS |
3031 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3032 | PL_expect = XSTATE; | |
a0d0e21e LW |
3033 | break; |
3034 | default: { | |
3035 | char *t; | |
3280af22 NIS |
3036 | if (PL_oldoldbufptr == PL_last_lop) |
3037 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3038 | else |
3280af22 | 3039 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3040 | s = skipspace(s); |
09ecc4b6 | 3041 | if (*s == '}') |
a0d0e21e | 3042 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
3043 | /* This hack serves to disambiguate a pair of curlies |
3044 | * as being a block or an anon hash. Normally, expectation | |
3045 | * determines that, but in cases where we're not in a | |
3046 | * position to expect anything in particular (like inside | |
3047 | * eval"") we have to resolve the ambiguity. This code | |
3048 | * covers the case where the first term in the curlies is a | |
3049 | * quoted string. Most other cases need to be explicitly | |
3050 | * disambiguated by prepending a `+' before the opening | |
3051 | * curly in order to force resolution as an anon hash. | |
3052 | * | |
3053 | * XXX should probably propagate the outer expectation | |
3054 | * into eval"" to rely less on this hack, but that could | |
3055 | * potentially break current behavior of eval"". | |
3056 | * GSAR 97-07-21 | |
3057 | */ | |
3058 | t = s; | |
3059 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3060 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3061 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3062 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3063 | t++; | |
3064 | t++; | |
a0d0e21e | 3065 | } |
b8a4b1be | 3066 | else if (*s == 'q') { |
3280af22 | 3067 | if (++t < PL_bufend |
b8a4b1be | 3068 | && (!isALNUM(*t) |
3280af22 | 3069 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3070 | && !isALNUM(*t)))) |
3071 | { | |
b8a4b1be GS |
3072 | char *tmps; |
3073 | char open, close, term; | |
3074 | I32 brackets = 1; | |
3075 | ||
3280af22 | 3076 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3077 | t++; |
3078 | term = *t; | |
3079 | open = term; | |
3080 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3081 | term = tmps[5]; | |
3082 | close = term; | |
3083 | if (open == close) | |
3280af22 NIS |
3084 | for (t++; t < PL_bufend; t++) { |
3085 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3086 | t++; |
6d07e5e9 | 3087 | else if (*t == open) |
b8a4b1be GS |
3088 | break; |
3089 | } | |
3090 | else | |
3280af22 NIS |
3091 | for (t++; t < PL_bufend; t++) { |
3092 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3093 | t++; |
6d07e5e9 | 3094 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3095 | break; |
3096 | else if (*t == open) | |
3097 | brackets++; | |
3098 | } | |
3099 | } | |
3100 | t++; | |
a0d0e21e | 3101 | } |
7e2040f0 | 3102 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3103 | t += UTF8SKIP(t); |
7e2040f0 | 3104 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3105 | t += UTF8SKIP(t); |
a0d0e21e | 3106 | } |
3280af22 | 3107 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3108 | t++; |
b8a4b1be GS |
3109 | /* if comma follows first term, call it an anon hash */ |
3110 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3111 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3112 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3113 | OPERATOR(HASHBRACK); |
3280af22 | 3114 | if (PL_expect == XREF) |
4e4e412b | 3115 | PL_expect = XTERM; |
a0d0e21e | 3116 | else { |
3280af22 NIS |
3117 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3118 | PL_expect = XSTATE; | |
a0d0e21e | 3119 | } |
8990e307 | 3120 | } |
a0d0e21e | 3121 | break; |
463ee0b2 | 3122 | } |
57843af0 | 3123 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3124 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3125 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3126 | TOKEN('{'); |
378cc40b | 3127 | case '}': |
79072805 LW |
3128 | rightbracket: |
3129 | s++; | |
3280af22 | 3130 | if (PL_lex_brackets <= 0) |
d98d5fff | 3131 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3132 | else |
3280af22 NIS |
3133 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
3134 | if (PL_lex_brackets < PL_lex_formbrack) | |
3135 | PL_lex_formbrack = 0; | |
3136 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3137 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3138 | if (PL_expect & XFAKEBRACK) { |
3139 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3140 | PL_lex_state = LEX_INTERPEND; |
3141 | PL_bufptr = s; | |
cea2e8a9 | 3142 | return yylex(); /* ignore fake brackets */ |
79072805 | 3143 | } |
fa83b5b6 | 3144 | if (*s == '-' && s[1] == '>') |
3280af22 | 3145 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3146 | else if (*s != '[' && *s != '{') |
3280af22 | 3147 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3148 | } |
3149 | } | |
9059aa12 LW |
3150 | if (PL_expect & XFAKEBRACK) { |
3151 | PL_expect &= XENUMMASK; | |
3280af22 | 3152 | PL_bufptr = s; |
cea2e8a9 | 3153 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3154 | } |
79072805 LW |
3155 | force_next('}'); |
3156 | TOKEN(';'); | |
378cc40b LW |
3157 | case '&': |
3158 | s++; | |
3159 | tmp = *s++; | |
3160 | if (tmp == '&') | |
a0d0e21e | 3161 | AOPERATOR(ANDAND); |
378cc40b | 3162 | s--; |
3280af22 | 3163 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3164 | if (ckWARN(WARN_SEMICOLON) |
3165 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3166 | { | |
57843af0 | 3167 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3168 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3169 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3170 | } |
79072805 | 3171 | BAop(OP_BIT_AND); |
463ee0b2 | 3172 | } |
79072805 | 3173 | |
3280af22 NIS |
3174 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3175 | if (*PL_tokenbuf) { | |
3176 | PL_expect = XOPERATOR; | |
3177 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3178 | } |
79072805 LW |
3179 | else |
3180 | PREREF('&'); | |
c07a80fd | 3181 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3182 | TERM('&'); |
3183 | ||
378cc40b LW |
3184 | case '|': |
3185 | s++; | |
3186 | tmp = *s++; | |
3187 | if (tmp == '|') | |
a0d0e21e | 3188 | AOPERATOR(OROR); |
378cc40b | 3189 | s--; |
79072805 | 3190 | BOop(OP_BIT_OR); |
378cc40b LW |
3191 | case '=': |
3192 | s++; | |
3193 | tmp = *s++; | |
3194 | if (tmp == '=') | |
79072805 LW |
3195 | Eop(OP_EQ); |
3196 | if (tmp == '>') | |
3197 | OPERATOR(','); | |
378cc40b | 3198 | if (tmp == '~') |
79072805 | 3199 | PMop(OP_MATCH); |
599cee73 | 3200 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3201 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3202 | s--; |
3280af22 NIS |
3203 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3204 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3205 | { |
3280af22 NIS |
3206 | if (PL_in_eval && !PL_rsfp) { |
3207 | d = PL_bufend; | |
a5f75d66 AD |
3208 | while (s < d) { |
3209 | if (*s++ == '\n') { | |
3210 | incline(s); | |
3211 | if (strnEQ(s,"=cut",4)) { | |
3212 | s = strchr(s,'\n'); | |
3213 | if (s) | |
3214 | s++; | |
3215 | else | |
3216 | s = d; | |
3217 | incline(s); | |
3218 | goto retry; | |
3219 | } | |
3220 | } | |
3221 | } | |
3222 | goto retry; | |
3223 | } | |
3280af22 NIS |
3224 | s = PL_bufend; |
3225 | PL_doextract = TRUE; | |
a0d0e21e LW |
3226 | goto retry; |
3227 | } | |
3280af22 | 3228 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3229 | char *t; |
51882d45 | 3230 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3231 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3232 | #else |
bf4acbe4 | 3233 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3234 | #endif |
a0d0e21e LW |
3235 | if (*t == '\n' || *t == '#') { |
3236 | s--; | |
3280af22 | 3237 | PL_expect = XBLOCK; |
a0d0e21e LW |
3238 | goto leftbracket; |
3239 | } | |
79072805 | 3240 | } |
a0d0e21e LW |
3241 | yylval.ival = 0; |
3242 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3243 | case '!': |
3244 | s++; | |
3245 | tmp = *s++; | |
3246 | if (tmp == '=') | |
79072805 | 3247 | Eop(OP_NE); |
378cc40b | 3248 | if (tmp == '~') |
79072805 | 3249 | PMop(OP_NOT); |
378cc40b LW |
3250 | s--; |
3251 | OPERATOR('!'); | |
3252 | case '<': | |
3280af22 | 3253 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3254 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3255 | check_uni(); |
79072805 LW |
3256 | if (s[1] == '<') |
3257 | s = scan_heredoc(s); | |
3258 | else | |
3259 | s = scan_inputsymbol(s); | |
3260 | TERM(sublex_start()); | |
378cc40b LW |
3261 | } |
3262 | s++; | |
3263 | tmp = *s++; | |
3264 | if (tmp == '<') | |
79072805 | 3265 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3266 | if (tmp == '=') { |
3267 | tmp = *s++; | |
3268 | if (tmp == '>') | |
79072805 | 3269 | Eop(OP_NCMP); |
395c3793 | 3270 | s--; |
79072805 | 3271 | Rop(OP_LE); |
395c3793 | 3272 | } |
378cc40b | 3273 | s--; |
79072805 | 3274 | Rop(OP_LT); |
378cc40b LW |
3275 | case '>': |
3276 | s++; | |
3277 | tmp = *s++; | |
3278 | if (tmp == '>') | |
79072805 | 3279 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3280 | if (tmp == '=') |
79072805 | 3281 | Rop(OP_GE); |
378cc40b | 3282 | s--; |
79072805 | 3283 | Rop(OP_GT); |
378cc40b LW |
3284 | |
3285 | case '$': | |
bbce6d69 | 3286 | CLINE; |
3287 | ||
3280af22 NIS |
3288 | if (PL_expect == XOPERATOR) { |
3289 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3290 | PL_expect = XTERM; | |
a0d0e21e | 3291 | depcom(); |
bbce6d69 | 3292 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3293 | } |
8990e307 | 3294 | } |
a0d0e21e | 3295 | |
7e2040f0 | 3296 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3297 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3298 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3299 | sizeof PL_tokenbuf - 1, FALSE); | |
3300 | if (PL_expect == XOPERATOR) | |
3301 | no_op("Array length", s); | |
3280af22 | 3302 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3303 | PREREF(DOLSHARP); |
3280af22 NIS |
3304 | PL_expect = XOPERATOR; |
3305 | PL_pending_ident = '#'; | |
463ee0b2 | 3306 | TOKEN(DOLSHARP); |
79072805 | 3307 | } |
bbce6d69 | 3308 | |
3280af22 | 3309 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3310 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3311 | sizeof PL_tokenbuf - 1, FALSE); | |
3312 | if (PL_expect == XOPERATOR) | |
3313 | no_op("Scalar", s); | |
3280af22 NIS |
3314 | if (!PL_tokenbuf[1]) { |
3315 | if (s == PL_bufend) | |
bbce6d69 | 3316 | yyerror("Final $ should be \\$ or $name"); |
3317 | PREREF('$'); | |
8990e307 | 3318 | } |
a0d0e21e | 3319 | |
bbce6d69 | 3320 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3321 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3322 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3323 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3324 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3325 | TERM(THING); | |
3326 | } | |
3327 | ||
ff68c719 | 3328 | d = s; |
69d2bceb | 3329 | tmp = (I32)*s; |
3280af22 | 3330 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3331 | s = skipspace(s); |
3332 | ||
3280af22 | 3333 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3334 | char *t; |
3335 | if (*s == '[') { | |
3280af22 | 3336 | PL_tokenbuf[0] = '@'; |
599cee73 | 3337 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3338 | for(t = s + 1; |
7e2040f0 | 3339 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3340 | t++) ; |
a0d0e21e | 3341 | if (*t++ == ',') { |
3280af22 NIS |
3342 | PL_bufptr = skipspace(PL_bufptr); |
3343 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3344 | t++; |
cea2e8a9 | 3345 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3346 | "Multidimensional syntax %.*s not supported", |
3347 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3348 | } |
3349 | } | |
bbce6d69 | 3350 | } |
3351 | else if (*s == '{') { | |
3280af22 | 3352 | PL_tokenbuf[0] = '%'; |
599cee73 | 3353 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3354 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3355 | { | |
3280af22 | 3356 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3357 | STRLEN len; |
3358 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3359 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3360 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3361 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3362 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3363 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3364 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3365 | } |
93a17b20 LW |
3366 | } |
3367 | } | |
2f3197b3 | 3368 | } |
bbce6d69 | 3369 | |
3280af22 | 3370 | PL_expect = XOPERATOR; |
69d2bceb | 3371 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3372 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3373 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3374 | PL_expect = XOPERATOR; | |
bbce6d69 | 3375 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3376 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3377 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3378 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3379 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3380 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3381 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3382 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3383 | /* binary operators exclude handle interpretations */ |
3384 | switch (tmp) { | |
3385 | case -KEY_x: | |
3386 | case -KEY_eq: | |
3387 | case -KEY_ne: | |
3388 | case -KEY_gt: | |
3389 | case -KEY_lt: | |
3390 | case -KEY_ge: | |
3391 | case -KEY_le: | |
3392 | case -KEY_cmp: | |
3393 | break; | |
3394 | default: | |
3280af22 | 3395 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3396 | break; |
3397 | } | |
3398 | } | |
68dc0745 | 3399 | else { |
3400 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3401 | if (gv && GvCVu(gv)) | |
3280af22 | 3402 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3403 | } |
93a17b20 | 3404 | } |
bbce6d69 | 3405 | else if (isDIGIT(*s)) |
3280af22 | 3406 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3407 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3408 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3409 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3410 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3411 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3412 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3413 | } |
3280af22 | 3414 | PL_pending_ident = '$'; |
79072805 | 3415 | TOKEN('$'); |
378cc40b LW |
3416 | |
3417 | case '@': | |
3280af22 | 3418 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3419 | no_op("Array", s); |
3280af22 NIS |
3420 | PL_tokenbuf[0] = '@'; |
3421 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3422 | if (!PL_tokenbuf[1]) { | |
3423 | if (s == PL_bufend) | |
bbce6d69 | 3424 | yyerror("Final @ should be \\@ or @name"); |
3425 | PREREF('@'); | |
3426 | } | |
3280af22 | 3427 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3428 | s = skipspace(s); |
3280af22 | 3429 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3430 | if (*s == '{') |
3280af22 | 3431 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3432 | |
3433 | /* Warn about @ where they meant $. */ | |
599cee73 | 3434 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3435 | if (*s == '[' || *s == '{') { |
3436 | char *t = s + 1; | |
7e2040f0 | 3437 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3438 | t++; |
3439 | if (*t == '}' || *t == ']') { | |
3440 | t++; | |
3280af22 | 3441 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3442 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3443 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3444 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3445 | } |
93a17b20 LW |
3446 | } |
3447 | } | |
463ee0b2 | 3448 | } |
3280af22 | 3449 | PL_pending_ident = '@'; |
79072805 | 3450 | TERM('@'); |
378cc40b LW |
3451 | |
3452 | case '/': /* may either be division or pattern */ | |
3453 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3454 | if (PL_expect != XOPERATOR) { |
c277df42 | 3455 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3456 | if (PL_oldoldbufptr == PL_last_uni |
3457 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3458 | || memNE(PL_last_uni, "study", 5) |
3459 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3460 | check_uni(); |
8782bef2 | 3461 | s = scan_pat(s,OP_MATCH); |
79072805 | 3462 | TERM(sublex_start()); |
378cc40b LW |
3463 | } |
3464 | tmp = *s++; | |
a687059c | 3465 | if (tmp == '/') |
79072805 | 3466 | Mop(OP_DIVIDE); |
378cc40b LW |
3467 | OPERATOR(tmp); |
3468 | ||
3469 | case '.': | |
51882d45 GS |
3470 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3471 | #ifdef PERL_STRICT_CR | |
3472 | && s[1] == '\n' | |
3473 | #else | |
3474 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3475 | #endif | |
3476 | && (s == PL_linestart || s[-1] == '\n') ) | |
3477 | { | |
3280af22 NIS |
3478 | PL_lex_formbrack = 0; |
3479 | PL_expect = XSTATE; | |
79072805 LW |
3480 | goto rightbracket; |
3481 | } | |
3280af22 | 3482 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3483 | tmp = *s++; |
a687059c LW |
3484 | if (*s == tmp) { |
3485 | s++; | |
2f3197b3 LW |
3486 | if (*s == tmp) { |
3487 | s++; | |
79072805 | 3488 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3489 | } |
3490 | else | |
79072805 | 3491 | yylval.ival = 0; |
378cc40b | 3492 | OPERATOR(DOTDOT); |
a687059c | 3493 | } |
3280af22 | 3494 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3495 | check_uni(); |
79072805 | 3496 | Aop(OP_CONCAT); |
378cc40b LW |
3497 | } |
3498 | /* FALL THROUGH */ | |
3499 | case '0': case '1': case '2': case '3': case '4': | |
3500 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3501 | s = scan_num(s); |
3280af22 | 3502 | if (PL_expect == XOPERATOR) |
8990e307 | 3503 | no_op("Number",s); |
79072805 LW |
3504 | TERM(THING); |
3505 | ||
3506 | case '\'': | |
09bef843 | 3507 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3508 | if (PL_expect == XOPERATOR) { |
3509 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3510 | PL_expect = XTERM; | |
a0d0e21e LW |
3511 | depcom(); |
3512 | return ','; /* grandfather non-comma-format format */ | |
3513 | } | |
463ee0b2 | 3514 | else |
8990e307 | 3515 | no_op("String",s); |
463ee0b2 | 3516 | } |
79072805 | 3517 | if (!s) |
85e6fe83 | 3518 | missingterm((char*)0); |
79072805 LW |
3519 | yylval.ival = OP_CONST; |
3520 | TERM(sublex_start()); | |
3521 | ||
3522 | case '"': | |
09bef843 | 3523 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3524 | if (PL_expect == XOPERATOR) { |
3525 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3526 | PL_expect = XTERM; | |
a0d0e21e LW |
3527 | depcom(); |
3528 | return ','; /* grandfather non-comma-format format */ | |
3529 | } | |
463ee0b2 | 3530 | else |
8990e307 | 3531 | no_op("String",s); |
463ee0b2 | 3532 | } |
79072805 | 3533 | if (!s) |
85e6fe83 | 3534 | missingterm((char*)0); |
4633a7c4 | 3535 | yylval.ival = OP_CONST; |
3280af22 | 3536 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3537 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3538 | yylval.ival = OP_STRINGIFY; |
3539 | break; | |
3540 | } | |
3541 | } | |
79072805 LW |
3542 | TERM(sublex_start()); |
3543 | ||
3544 | case '`': | |
09bef843 | 3545 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3546 | if (PL_expect == XOPERATOR) |
8990e307 | 3547 | no_op("Backticks",s); |
79072805 | 3548 | if (!s) |
85e6fe83 | 3549 | missingterm((char*)0); |
79072805 LW |
3550 | yylval.ival = OP_BACKTICK; |
3551 | set_csh(); | |
3552 | TERM(sublex_start()); | |
3553 | ||
3554 | case '\\': | |
3555 | s++; | |
599cee73 | 3556 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3557 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3558 | *s, *s); |
3280af22 | 3559 | if (PL_expect == XOPERATOR) |
8990e307 | 3560 | no_op("Backslash",s); |
79072805 LW |
3561 | OPERATOR(REFGEN); |
3562 | ||
a7cb1f99 | 3563 | case 'v': |
e526c9e6 | 3564 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3565 | char *start = s; |
3566 | start++; | |
3567 | start++; | |
dd629d5b | 3568 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3569 | start++; |
3570 | if (*start == '.' && isDIGIT(start[1])) { | |
3571 | s = scan_num(s); | |
3572 | TERM(THING); | |
3573 | } | |
e526c9e6 GS |
3574 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
3575 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF)) { | |
3576 | char c = *start; | |
3577 | GV *gv; | |
3578 | *start = '\0'; | |
3579 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3580 | *start = c; | |
3581 | if (!gv) { | |
3582 | s = scan_num(s); | |
3583 | TERM(THING); | |
3584 | } | |
3585 | } | |
a7cb1f99 GS |
3586 | } |
3587 | goto keylookup; | |
79072805 | 3588 | case 'x': |
3280af22 | 3589 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3590 | s++; |
3591 | Mop(OP_REPEAT); | |
2f3197b3 | 3592 | } |
79072805 LW |
3593 | goto keylookup; |
3594 | ||
378cc40b | 3595 | case '_': |
79072805 LW |
3596 | case 'a': case 'A': |
3597 | case 'b': case 'B': | |
3598 | case 'c': case 'C': | |
3599 | case 'd': case 'D': | |
3600 | case 'e': case 'E': | |
3601 | case 'f': case 'F': | |
3602 | case 'g': case 'G': | |
3603 | case 'h': case 'H': | |
3604 | case 'i': case 'I': | |
3605 | case 'j': case 'J': | |
3606 | case 'k': case 'K': | |
3607 | case 'l': case 'L': | |
3608 | case 'm': case 'M': | |
3609 | case 'n': case 'N': | |
3610 | case 'o': case 'O': | |
3611 | case 'p': case 'P': | |
3612 | case 'q': case 'Q': | |
3613 | case 'r': case 'R': | |
3614 | case 's': case 'S': | |
3615 | case 't': case 'T': | |
3616 | case 'u': case 'U': | |
a7cb1f99 | 3617 | case 'V': |
79072805 LW |
3618 | case 'w': case 'W': |
3619 | case 'X': | |
3620 | case 'y': case 'Y': | |
3621 | case 'z': case 'Z': | |
3622 | ||
49dc05e3 | 3623 | keylookup: { |
161b471a NIS |
3624 | gv = Nullgv; |
3625 | gvp = 0; | |
49dc05e3 | 3626 | |
3280af22 NIS |
3627 | PL_bufptr = s; |
3628 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3629 | |
3630 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3631 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3632 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3633 | (PL_tokenbuf[0] == 'q' && | |
3634 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3635 | |
3636 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3637 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3638 | goto just_a_word; |
3639 | ||
3643fb5f | 3640 | d = s; |
3280af22 | 3641 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3642 | d++; /* no comments skipped here, or s### is misparsed */ |
3643 | ||
3644 | /* Is this a label? */ | |
3280af22 NIS |
3645 | if (!tmp && PL_expect == XSTATE |
3646 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3647 | s = d + 1; |
3280af22 | 3648 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3649 | CLINE; |
3650 | TOKEN(LABEL); | |
3643fb5f CS |
3651 | } |
3652 | ||
3653 | /* Check for keywords */ | |
3280af22 | 3654 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3655 | |
3656 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3657 | if (*d == '=' && d[1] == '>') { |
748a9306 | 3658 | CLINE; |
3280af22 | 3659 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3660 | yylval.opval->op_private = OPpCONST_BARE; |
3661 | TERM(WORD); | |
3662 | } | |
3663 | ||
a0d0e21e | 3664 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3665 | GV *ogv = Nullgv; /* override (winner) */ |
3666 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3667 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3668 | CV *cv; |
3280af22 | 3669 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3670 | (cv = GvCVu(gv))) |
3671 | { | |
3672 | if (GvIMPORTED_CV(gv)) | |
3673 | ogv = gv; | |
3674 | else if (! CvMETHOD(cv)) | |
3675 | hgv = gv; | |
3676 | } | |
3677 | if (!ogv && | |
3280af22 NIS |
3678 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3679 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3680 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3681 | { | |
3682 | ogv = gv; | |
3683 | } | |
3684 | } | |
3685 | if (ogv) { | |
3686 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3687 | } |
3688 | else if (gv && !gvp | |
3689 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3690 | && GvCVu(gv) |
3280af22 | 3691 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3692 | { |
3693 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3694 | } |
56f7f34b CS |
3695 | else { /* no override */ |
3696 | tmp = -tmp; | |
3697 | gv = Nullgv; | |
3698 | gvp = 0; | |
4944e2f7 GS |
3699 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3700 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3701 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3702 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3703 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3704 | } |
a0d0e21e LW |
3705 | } |
3706 | ||
3707 | reserved_word: | |
3708 | switch (tmp) { | |
79072805 LW |
3709 | |
3710 | default: /* not a keyword */ | |
93a17b20 | 3711 | just_a_word: { |
96e4d5b1 | 3712 | SV *sv; |
3280af22 | 3713 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3714 | |
3715 | /* Get the rest if it looks like a package qualifier */ | |
3716 | ||
155aba94 | 3717 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3718 | STRLEN morelen; |
3280af22 | 3719 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3720 | TRUE, &morelen); |
3721 | if (!morelen) | |
cea2e8a9 | 3722 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3723 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3724 | len += morelen; |
a0d0e21e | 3725 | } |
8990e307 | 3726 | |
3280af22 NIS |
3727 | if (PL_expect == XOPERATOR) { |
3728 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3729 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3730 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3731 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3732 | } |
3733 | else | |
54310121 | 3734 | no_op("Bareword",s); |
463ee0b2 | 3735 | } |
8990e307 | 3736 | |
c3e0f903 GS |
3737 | /* Look for a subroutine with this name in current package, |
3738 | unless name is "Foo::", in which case Foo is a bearword | |
3739 | (and a package name). */ | |
3740 | ||
3741 | if (len > 2 && | |
3280af22 | 3742 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3743 | { |
e476b1b5 GS |
3744 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3745 | Perl_warner(aTHX_ WARN_BAREWORD, | |
599cee73 | 3746 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3747 | PL_tokenbuf); |
c3e0f903 | 3748 | len -= 2; |
3280af22 | 3749 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3750 | gv = Nullgv; |
3751 | gvp = 0; | |
3752 | } | |
3753 | else { | |
3754 | len = 0; | |
3755 | if (!gv) | |
3280af22 | 3756 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3757 | } |
3758 | ||
3759 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3760 | |
49dc05e3 | 3761 | if (gvp) { |
79cb57f6 | 3762 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3763 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3764 | } |
3765 | else | |
3280af22 | 3766 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3767 | |
a0d0e21e LW |
3768 | /* Presume this is going to be a bareword of some sort. */ |
3769 | ||
3770 | CLINE; | |
49dc05e3 | 3771 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3772 | yylval.opval->op_private = OPpCONST_BARE; |
3773 | ||
c3e0f903 GS |
3774 | /* And if "Foo::", then that's what it certainly is. */ |
3775 | ||
3776 | if (len) | |
3777 | goto safe_bareword; | |
3778 | ||
8990e307 LW |
3779 | /* See if it's the indirect object for a list operator. */ |
3780 | ||
3280af22 NIS |
3781 | if (PL_oldoldbufptr && |
3782 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3783 | (PL_oldoldbufptr == PL_last_lop |
3784 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3785 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3786 | (PL_expect == XREF || |
3787 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3788 | { |
748a9306 LW |
3789 | bool immediate_paren = *s == '('; |
3790 | ||
a0d0e21e LW |
3791 | /* (Now we can afford to cross potential line boundary.) */ |
3792 | s = skipspace(s); | |
3793 | ||
3794 | /* Two barewords in a row may indicate method call. */ | |
3795 | ||
7e2040f0 | 3796 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3797 | return tmp; |
3798 | ||
3799 | /* If not a declared subroutine, it's an indirect object. */ | |
3800 | /* (But it's an indir obj regardless for sort.) */ | |
3801 | ||
3280af22 | 3802 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3803 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3804 | (PL_last_lop_op != OP_MAPSTART && | |
3805 | PL_last_lop_op != OP_GREPSTART)) | |
3806 | { | |
3280af22 | 3807 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3808 | goto bareword; |
93a17b20 LW |
3809 | } |
3810 | } | |
8990e307 | 3811 | |
8990e307 | 3812 | |
3280af22 | 3813 | PL_expect = XOPERATOR; |
8990e307 | 3814 | s = skipspace(s); |
1c3923b3 GS |
3815 | |
3816 | /* Is this a word before a => operator? */ | |
3817 | if (*s == '=' && s[1] == '>') { | |
3818 | CLINE; | |
3819 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
3820 | TERM(WORD); | |
3821 | } | |
3822 | ||
3823 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 3824 | if (*s == '(') { |
79072805 | 3825 | CLINE; |
96e4d5b1 | 3826 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 3827 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 3828 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3829 | s = d + 1; |
3830 | goto its_constant; | |
3831 | } | |
3832 | } | |
3280af22 NIS |
3833 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3834 | PL_expect = XOPERATOR; | |
93a17b20 | 3835 | force_next(WORD); |
c07a80fd | 3836 | yylval.ival = 0; |
463ee0b2 | 3837 | TOKEN('&'); |
79072805 | 3838 | } |
93a17b20 | 3839 | |
a0d0e21e | 3840 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3841 | |
8ebc5c01 | 3842 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3843 | PL_last_lop = PL_oldbufptr; |
3844 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3845 | PREBLOCK(METHOD); |
463ee0b2 LW |
3846 | } |
3847 | ||
8990e307 LW |
3848 | /* If followed by a bareword, see if it looks like indir obj. */ |
3849 | ||
7e2040f0 | 3850 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3851 | return tmp; |
93a17b20 | 3852 | |
8990e307 LW |
3853 | /* Not a method, so call it a subroutine (if defined) */ |
3854 | ||
8ebc5c01 | 3855 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3856 | CV* cv; |
0453d815 PM |
3857 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3858 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3859 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3860 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3861 | /* Check for a constant sub */ |
46fc3d4c | 3862 | cv = GvCV(gv); |
96e4d5b1 | 3863 | if ((sv = cv_const_sv(cv))) { |
3864 | its_constant: | |
3865 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3866 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3867 | yylval.opval->op_private = 0; | |
3868 | TOKEN(WORD); | |
89bfa8cd | 3869 | } |
3870 | ||
a5f75d66 AD |
3871 | /* Resolve to GV now. */ |
3872 | op_free(yylval.opval); | |
3873 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3874 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3875 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3876 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3877 | /* Is there a prototype? */ |
3878 | if (SvPOK(cv)) { | |
3879 | STRLEN len; | |
7a52d87a | 3880 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3881 | if (!len) |
3882 | TERM(FUNC0SUB); | |
7a52d87a | 3883 | if (strEQ(proto, "$")) |
4633a7c4 | 3884 | OPERATOR(UNIOPSUB); |
7a52d87a | 3885 | if (*proto == '&' && *s == '{') { |
3280af22 | 3886 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3887 | PREBLOCK(LSTOPSUB); |
3888 | } | |
a9ef352a | 3889 | } |
3280af22 NIS |
3890 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3891 | PL_expect = XTERM; | |
8990e307 LW |
3892 | force_next(WORD); |
3893 | TOKEN(NOAMP); | |
3894 | } | |
748a9306 | 3895 | |
8990e307 LW |
3896 | /* Call it a bare word */ |
3897 | ||
5603f27d GS |
3898 | if (PL_hints & HINT_STRICT_SUBS) |
3899 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3900 | else { | |
3901 | bareword: | |
3902 | if (ckWARN(WARN_RESERVED)) { | |
3903 | if (lastchar != '-') { | |
3904 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3905 | if (!*d) | |
cea2e8a9 | 3906 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3907 | PL_tokenbuf); |
3908 | } | |
748a9306 LW |
3909 | } |
3910 | } | |
c3e0f903 GS |
3911 | |
3912 | safe_bareword: | |
f248d071 | 3913 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3914 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3915 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3916 | lastchar, PL_tokenbuf); |
0453d815 PM |
3917 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3918 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3919 | lastchar, lastchar); |
3920 | } | |
93a17b20 | 3921 | TOKEN(WORD); |
79072805 | 3922 | } |
79072805 | 3923 | |
68dc0745 | 3924 | case KEY___FILE__: |
46fc3d4c | 3925 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3926 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3927 | TERM(THING); |
3928 | ||
79072805 | 3929 | case KEY___LINE__: |
cf2093f6 | 3930 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3931 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3932 | TERM(THING); |
68dc0745 | 3933 | |
3934 | case KEY___PACKAGE__: | |
3935 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3936 | (PL_curstash |
3937 | ? newSVsv(PL_curstname) | |
3938 | : &PL_sv_undef)); | |
79072805 | 3939 | TERM(THING); |
79072805 | 3940 | |
e50aee73 | 3941 | case KEY___DATA__: |
79072805 LW |
3942 | case KEY___END__: { |
3943 | GV *gv; | |
79072805 LW |
3944 | |
3945 | /*SUPPRESS 560*/ | |
3280af22 | 3946 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3947 | char *pname = "main"; |
3280af22 NIS |
3948 | if (PL_tokenbuf[2] == 'D') |
3949 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3950 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3951 | GvMULTI_on(gv); |
79072805 | 3952 | if (!GvIO(gv)) |
a0d0e21e | 3953 | GvIOp(gv) = newIO(); |
3280af22 | 3954 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3955 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3956 | { | |
3280af22 | 3957 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3958 | fcntl(fd,F_SETFD,fd >= 3); |
3959 | } | |
79072805 | 3960 | #endif |
fd049845 | 3961 | /* Mark this internal pseudo-handle as clean */ |
3962 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3963 | if (PL_preprocess) |
a0d0e21e | 3964 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3965 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3966 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3967 | else |
a0d0e21e | 3968 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3969 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3970 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 3971 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 3972 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
3973 | if (PL_bufend-PL_bufptr > 2 |
3974 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
3975 | { |
3976 | Off_t loc = 0; | |
3977 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3978 | loc = PerlIO_tell(PL_rsfp); | |
3979 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3980 | } | |
3981 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3982 | #if defined(__BORLANDC__) | |
3983 | /* XXX see note in do_binmode() */ | |
3984 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3985 | #endif | |
3986 | if (loc > 0) | |
3987 | PerlIO_seek(PL_rsfp, loc, 0); | |
3988 | } | |
3989 | } | |
3990 | #endif | |
3280af22 | 3991 | PL_rsfp = Nullfp; |
79072805 LW |
3992 | } |
3993 | goto fake_eof; | |
e929a76b | 3994 | } |
de3bb511 | 3995 | |
8990e307 | 3996 | case KEY_AUTOLOAD: |
ed6116ce | 3997 | case KEY_DESTROY: |
79072805 | 3998 | case KEY_BEGIN: |
7d30b5c4 | 3999 | case KEY_CHECK: |
7d07dbc2 | 4000 | case KEY_INIT: |
7d30b5c4 | 4001 | case KEY_END: |
3280af22 NIS |
4002 | if (PL_expect == XSTATE) { |
4003 | s = PL_bufptr; | |
93a17b20 | 4004 | goto really_sub; |
79072805 LW |
4005 | } |
4006 | goto just_a_word; | |
4007 | ||
a0d0e21e LW |
4008 | case KEY_CORE: |
4009 | if (*s == ':' && s[1] == ':') { | |
4010 | s += 2; | |
748a9306 | 4011 | d = s; |
3280af22 | 4012 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4013 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4014 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4015 | if (tmp < 0) |
4016 | tmp = -tmp; | |
4017 | goto reserved_word; | |
4018 | } | |
4019 | goto just_a_word; | |
4020 | ||
463ee0b2 LW |
4021 | case KEY_abs: |
4022 | UNI(OP_ABS); | |
4023 | ||
79072805 LW |
4024 | case KEY_alarm: |
4025 | UNI(OP_ALARM); | |
4026 | ||
4027 | case KEY_accept: | |
a0d0e21e | 4028 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4029 | |
463ee0b2 LW |
4030 | case KEY_and: |
4031 | OPERATOR(ANDOP); | |
4032 | ||
79072805 | 4033 | case KEY_atan2: |
a0d0e21e | 4034 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4035 | |
79072805 | 4036 | case KEY_bind: |
a0d0e21e | 4037 | LOP(OP_BIND,XTERM); |
79072805 LW |
4038 | |
4039 | case KEY_binmode: | |
1c1fc3ea | 4040 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4041 | |
4042 | case KEY_bless: | |
a0d0e21e | 4043 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4044 | |
4045 | case KEY_chop: | |
4046 | UNI(OP_CHOP); | |
4047 | ||
4048 | case KEY_continue: | |
4049 | PREBLOCK(CONTINUE); | |
4050 | ||
4051 | case KEY_chdir: | |
85e6fe83 | 4052 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4053 | UNI(OP_CHDIR); |
4054 | ||
4055 | case KEY_close: | |
4056 | UNI(OP_CLOSE); | |
4057 | ||
4058 | case KEY_closedir: | |
4059 | UNI(OP_CLOSEDIR); | |
4060 | ||
4061 | case KEY_cmp: | |
4062 | Eop(OP_SCMP); | |
4063 | ||
4064 | case KEY_caller: | |
4065 | UNI(OP_CALLER); | |
4066 | ||
4067 | case KEY_crypt: | |
4068 | #ifdef FCRYPT | |
f4c556ac GS |
4069 | if (!PL_cryptseen) { |
4070 | PL_cryptseen = TRUE; | |
de3bb511 | 4071 | init_des(); |
f4c556ac | 4072 | } |
a687059c | 4073 | #endif |
a0d0e21e | 4074 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4075 | |
4076 | case KEY_chmod: | |
e476b1b5 | 4077 | if (ckWARN(WARN_CHMOD)) { |
3280af22 | 4078 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 4079 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4080 | Perl_warner(aTHX_ WARN_CHMOD, |
5a211162 | 4081 | "chmod() mode argument is missing initial 0"); |
748a9306 | 4082 | } |
a0d0e21e | 4083 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4084 | |
4085 | case KEY_chown: | |
a0d0e21e | 4086 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4087 | |
4088 | case KEY_connect: | |
a0d0e21e | 4089 | LOP(OP_CONNECT,XTERM); |
79072805 | 4090 | |
463ee0b2 LW |
4091 | case KEY_chr: |
4092 | UNI(OP_CHR); | |
4093 | ||
79072805 LW |
4094 | case KEY_cos: |
4095 | UNI(OP_COS); | |
4096 | ||
4097 | case KEY_chroot: | |
4098 | UNI(OP_CHROOT); | |
4099 | ||
4100 | case KEY_do: | |
4101 | s = skipspace(s); | |
4102 | if (*s == '{') | |
a0d0e21e | 4103 | PRETERMBLOCK(DO); |
79072805 | 4104 | if (*s != '\'') |
a0d0e21e | 4105 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 4106 | OPERATOR(DO); |
79072805 LW |
4107 | |
4108 | case KEY_die: | |
3280af22 | 4109 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4110 | LOP(OP_DIE,XTERM); |
79072805 LW |
4111 | |
4112 | case KEY_defined: | |
4113 | UNI(OP_DEFINED); | |
4114 | ||
4115 | case KEY_delete: | |
a0d0e21e | 4116 | UNI(OP_DELETE); |
79072805 LW |
4117 | |
4118 | case KEY_dbmopen: | |
a0d0e21e LW |
4119 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4120 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4121 | |
4122 | case KEY_dbmclose: | |
4123 | UNI(OP_DBMCLOSE); | |
4124 | ||
4125 | case KEY_dump: | |
a0d0e21e | 4126 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4127 | LOOPX(OP_DUMP); |
4128 | ||
4129 | case KEY_else: | |
4130 | PREBLOCK(ELSE); | |
4131 | ||
4132 | case KEY_elsif: | |
57843af0 | 4133 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4134 | OPERATOR(ELSIF); |
4135 | ||
4136 | case KEY_eq: | |
4137 | Eop(OP_SEQ); | |
4138 | ||
a0d0e21e LW |
4139 | case KEY_exists: |
4140 | UNI(OP_EXISTS); | |
4141 | ||
79072805 LW |
4142 | case KEY_exit: |
4143 | UNI(OP_EXIT); | |
4144 | ||
4145 | case KEY_eval: | |
79072805 | 4146 | s = skipspace(s); |
3280af22 | 4147 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4148 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4149 | |
4150 | case KEY_eof: | |
4151 | UNI(OP_EOF); | |
4152 | ||
4153 | case KEY_exp: | |
4154 | UNI(OP_EXP); | |
4155 | ||
4156 | case KEY_each: | |
4157 | UNI(OP_EACH); | |
4158 | ||
4159 | case KEY_exec: | |
4160 | set_csh(); | |
a0d0e21e | 4161 | LOP(OP_EXEC,XREF); |
79072805 LW |
4162 | |
4163 | case KEY_endhostent: | |
4164 | FUN0(OP_EHOSTENT); | |
4165 | ||
4166 | case KEY_endnetent: | |
4167 | FUN0(OP_ENETENT); | |
4168 | ||
4169 | case KEY_endservent: | |
4170 | FUN0(OP_ESERVENT); | |
4171 | ||
4172 | case KEY_endprotoent: | |
4173 | FUN0(OP_EPROTOENT); | |
4174 | ||
4175 | case KEY_endpwent: | |
4176 | FUN0(OP_EPWENT); | |
4177 | ||
4178 | case KEY_endgrent: | |
4179 | FUN0(OP_EGRENT); | |
4180 | ||
4181 | case KEY_for: | |
4182 | case KEY_foreach: | |
57843af0 | 4183 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4184 | s = skipspace(s); |
7e2040f0 | 4185 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4186 | char *p = s; |
3280af22 | 4187 | if ((PL_bufend - p) >= 3 && |
55497cff | 4188 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4189 | p += 2; | |
77ca0c92 LW |
4190 | else if ((PL_bufend - p) >= 4 && |
4191 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4192 | p += 3; | |
55497cff | 4193 | p = skipspace(p); |
7e2040f0 | 4194 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4195 | p = scan_ident(p, PL_bufend, |
4196 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4197 | p = skipspace(p); | |
4198 | } | |
4199 | if (*p != '$') | |
cea2e8a9 | 4200 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4201 | } |
79072805 LW |
4202 | OPERATOR(FOR); |
4203 | ||
4204 | case KEY_formline: | |
a0d0e21e | 4205 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4206 | |
4207 | case KEY_fork: | |
4208 | FUN0(OP_FORK); | |
4209 | ||
4210 | case KEY_fcntl: | |
a0d0e21e | 4211 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4212 | |
4213 | case KEY_fileno: | |
4214 | UNI(OP_FILENO); | |
4215 | ||
4216 | case KEY_flock: | |
a0d0e21e | 4217 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4218 | |
4219 | case KEY_gt: | |
4220 | Rop(OP_SGT); | |
4221 | ||
4222 | case KEY_ge: | |
4223 | Rop(OP_SGE); | |
4224 | ||
4225 | case KEY_grep: | |
2c38e13d | 4226 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4227 | |
4228 | case KEY_goto: | |
a0d0e21e | 4229 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4230 | LOOPX(OP_GOTO); |
4231 | ||
4232 | case KEY_gmtime: | |
4233 | UNI(OP_GMTIME); | |
4234 | ||
4235 | case KEY_getc: | |
4236 | UNI(OP_GETC); | |
4237 | ||
4238 | case KEY_getppid: | |
4239 | FUN0(OP_GETPPID); | |
4240 | ||
4241 | case KEY_getpgrp: | |
4242 | UNI(OP_GETPGRP); | |
4243 | ||
4244 | case KEY_getpriority: | |
a0d0e21e | 4245 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4246 | |
4247 | case KEY_getprotobyname: | |
4248 | UNI(OP_GPBYNAME); | |
4249 | ||
4250 | case KEY_getprotobynumber: | |
a0d0e21e | 4251 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4252 | |
4253 | case KEY_getprotoent: | |
4254 | FUN0(OP_GPROTOENT); | |
4255 | ||
4256 | case KEY_getpwent: | |
4257 | FUN0(OP_GPWENT); | |
4258 | ||
4259 | case KEY_getpwnam: | |
ff68c719 | 4260 | UNI(OP_GPWNAM); |
79072805 LW |
4261 | |
4262 | case KEY_getpwuid: | |
ff68c719 | 4263 | UNI(OP_GPWUID); |
79072805 LW |
4264 | |
4265 | case KEY_getpeername: | |
4266 | UNI(OP_GETPEERNAME); | |
4267 | ||
4268 | case KEY_gethostbyname: | |
4269 | UNI(OP_GHBYNAME); | |
4270 | ||
4271 | case KEY_gethostbyaddr: | |
a0d0e21e | 4272 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4273 | |
4274 | case KEY_gethostent: | |
4275 | FUN0(OP_GHOSTENT); | |
4276 | ||
4277 | case KEY_getnetbyname: | |
4278 | UNI(OP_GNBYNAME); | |
4279 | ||
4280 | case KEY_getnetbyaddr: | |
a0d0e21e | 4281 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4282 | |
4283 | case KEY_getnetent: | |
4284 | FUN0(OP_GNETENT); | |
4285 | ||
4286 | case KEY_getservbyname: | |
a0d0e21e | 4287 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4288 | |
4289 | case KEY_getservbyport: | |
a0d0e21e | 4290 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4291 | |
4292 | case KEY_getservent: | |
4293 | FUN0(OP_GSERVENT); | |
4294 | ||
4295 | case KEY_getsockname: | |
4296 | UNI(OP_GETSOCKNAME); | |
4297 | ||
4298 | case KEY_getsockopt: | |
a0d0e21e | 4299 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4300 | |
4301 | case KEY_getgrent: | |
4302 | FUN0(OP_GGRENT); | |
4303 | ||
4304 | case KEY_getgrnam: | |
ff68c719 | 4305 | UNI(OP_GGRNAM); |
79072805 LW |
4306 | |
4307 | case KEY_getgrgid: | |
ff68c719 | 4308 | UNI(OP_GGRGID); |
79072805 LW |
4309 | |
4310 | case KEY_getlogin: | |
4311 | FUN0(OP_GETLOGIN); | |
4312 | ||
93a17b20 | 4313 | case KEY_glob: |
a0d0e21e LW |
4314 | set_csh(); |
4315 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4316 | |
79072805 LW |
4317 | case KEY_hex: |
4318 | UNI(OP_HEX); | |
4319 | ||
4320 | case KEY_if: | |
57843af0 | 4321 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4322 | OPERATOR(IF); |
4323 | ||
4324 | case KEY_index: | |
a0d0e21e | 4325 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4326 | |
4327 | case KEY_int: | |
4328 | UNI(OP_INT); | |
4329 | ||
4330 | case KEY_ioctl: | |
a0d0e21e | 4331 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4332 | |
4333 | case KEY_join: | |
a0d0e21e | 4334 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4335 | |
4336 | case KEY_keys: | |
4337 | UNI(OP_KEYS); | |
4338 | ||
4339 | case KEY_kill: | |
a0d0e21e | 4340 | LOP(OP_KILL,XTERM); |
79072805 LW |
4341 | |
4342 | case KEY_last: | |
a0d0e21e | 4343 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4344 | LOOPX(OP_LAST); |
a0d0e21e | 4345 | |
79072805 LW |
4346 | case KEY_lc: |
4347 | UNI(OP_LC); | |
4348 | ||
4349 | case KEY_lcfirst: | |
4350 | UNI(OP_LCFIRST); | |
4351 | ||
4352 | case KEY_local: | |
09bef843 | 4353 | yylval.ival = 0; |
79072805 LW |
4354 | OPERATOR(LOCAL); |
4355 | ||
4356 | case KEY_length: | |
4357 | UNI(OP_LENGTH); | |
4358 | ||
4359 | case KEY_lt: | |
4360 | Rop(OP_SLT); | |
4361 | ||
4362 | case KEY_le: | |
4363 | Rop(OP_SLE); | |
4364 | ||
4365 | case KEY_localtime: | |
4366 | UNI(OP_LOCALTIME); | |
4367 | ||
4368 | case KEY_log: | |
4369 | UNI(OP_LOG); | |
4370 | ||
4371 | case KEY_link: | |
a0d0e21e | 4372 | LOP(OP_LINK,XTERM); |
79072805 LW |
4373 | |
4374 | case KEY_listen: | |
a0d0e21e | 4375 | LOP(OP_LISTEN,XTERM); |
79072805 | 4376 | |
c0329465 MB |
4377 | case KEY_lock: |
4378 | UNI(OP_LOCK); | |
4379 | ||
79072805 LW |
4380 | case KEY_lstat: |
4381 | UNI(OP_LSTAT); | |
4382 | ||
4383 | case KEY_m: | |
8782bef2 | 4384 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4385 | TERM(sublex_start()); |
4386 | ||
a0d0e21e | 4387 | case KEY_map: |
2c38e13d | 4388 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4389 | |
79072805 | 4390 | case KEY_mkdir: |
a0d0e21e | 4391 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4392 | |
4393 | case KEY_msgctl: | |
a0d0e21e | 4394 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4395 | |
4396 | case KEY_msgget: | |
a0d0e21e | 4397 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4398 | |
4399 | case KEY_msgrcv: | |
a0d0e21e | 4400 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4401 | |
4402 | case KEY_msgsnd: | |
a0d0e21e | 4403 | LOP(OP_MSGSND,XTERM); |
79072805 | 4404 | |
77ca0c92 | 4405 | case KEY_our: |
93a17b20 | 4406 | case KEY_my: |
77ca0c92 | 4407 | PL_in_my = tmp; |
c750a3ec | 4408 | s = skipspace(s); |
7e2040f0 | 4409 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4410 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4411 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4412 | goto really_sub; | |
3280af22 NIS |
4413 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4414 | if (!PL_in_my_stash) { | |
c750a3ec | 4415 | char tmpbuf[1024]; |
3280af22 NIS |
4416 | PL_bufptr = s; |
4417 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4418 | yyerror(tmpbuf); |
4419 | } | |
4420 | } | |
09bef843 | 4421 | yylval.ival = 1; |
55497cff | 4422 | OPERATOR(MY); |
93a17b20 | 4423 | |
79072805 | 4424 | case KEY_next: |
a0d0e21e | 4425 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4426 | LOOPX(OP_NEXT); |
4427 | ||
4428 | case KEY_ne: | |
4429 | Eop(OP_SNE); | |
4430 | ||
a0d0e21e | 4431 | case KEY_no: |
3280af22 | 4432 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4433 | yyerror("\"no\" not allowed in expression"); |
4434 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4435 | s = force_version(s); |
a0d0e21e LW |
4436 | yylval.ival = 0; |
4437 | OPERATOR(USE); | |
4438 | ||
4439 | case KEY_not: | |
2d2e263d LW |
4440 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4441 | FUN1(OP_NOT); | |
4442 | else | |
4443 | OPERATOR(NOTOP); | |
a0d0e21e | 4444 | |
79072805 | 4445 | case KEY_open: |
93a17b20 | 4446 | s = skipspace(s); |
7e2040f0 | 4447 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4448 | char *t; |
7e2040f0 | 4449 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4450 | t = skipspace(d); |
e476b1b5 GS |
4451 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4452 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4453 | "Precedence problem: open %.*s should be open(%.*s)", |
4454 | d-s,s, d-s,s); | |
93a17b20 | 4455 | } |
a0d0e21e | 4456 | LOP(OP_OPEN,XTERM); |
79072805 | 4457 | |
463ee0b2 | 4458 | case KEY_or: |
a0d0e21e | 4459 | yylval.ival = OP_OR; |
463ee0b2 LW |
4460 | OPERATOR(OROP); |
4461 | ||
79072805 LW |
4462 | case KEY_ord: |
4463 | UNI(OP_ORD); | |
4464 | ||
4465 | case KEY_oct: | |
4466 | UNI(OP_OCT); | |
4467 | ||
4468 | case KEY_opendir: | |
a0d0e21e | 4469 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4470 | |
4471 | case KEY_print: | |
3280af22 | 4472 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4473 | LOP(OP_PRINT,XREF); |
79072805 LW |
4474 | |
4475 | case KEY_printf: | |
3280af22 | 4476 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4477 | LOP(OP_PRTF,XREF); |
79072805 | 4478 | |
c07a80fd | 4479 | case KEY_prototype: |
4480 | UNI(OP_PROTOTYPE); | |
4481 | ||
79072805 | 4482 | case KEY_push: |
a0d0e21e | 4483 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4484 | |
4485 | case KEY_pop: | |
4486 | UNI(OP_POP); | |
4487 | ||
a0d0e21e LW |
4488 | case KEY_pos: |
4489 | UNI(OP_POS); | |
4490 | ||
79072805 | 4491 | case KEY_pack: |
a0d0e21e | 4492 | LOP(OP_PACK,XTERM); |
79072805 LW |
4493 | |
4494 | case KEY_package: | |
a0d0e21e | 4495 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4496 | OPERATOR(PACKAGE); |
4497 | ||
4498 | case KEY_pipe: | |
a0d0e21e | 4499 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4500 | |
4501 | case KEY_q: | |
09bef843 | 4502 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4503 | if (!s) |
85e6fe83 | 4504 | missingterm((char*)0); |
79072805 LW |
4505 | yylval.ival = OP_CONST; |
4506 | TERM(sublex_start()); | |
4507 | ||
a0d0e21e LW |
4508 | case KEY_quotemeta: |
4509 | UNI(OP_QUOTEMETA); | |
4510 | ||
8990e307 | 4511 | case KEY_qw: |
09bef843 | 4512 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4513 | if (!s) |
85e6fe83 | 4514 | missingterm((char*)0); |
8127e0e3 GS |
4515 | force_next(')'); |
4516 | if (SvCUR(PL_lex_stuff)) { | |
4517 | OP *words = Nullop; | |
4518 | int warned = 0; | |
3280af22 | 4519 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4520 | while (len) { |
4521 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4522 | if (len) { | |
4523 | char *b = d; | |
e476b1b5 | 4524 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4525 | for (; !isSPACE(*d) && len; --len, ++d) { |
4526 | if (*d == ',') { | |
e476b1b5 | 4527 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4528 | "Possible attempt to separate words with commas"); |
4529 | ++warned; | |
4530 | } | |
4531 | else if (*d == '#') { | |
e476b1b5 | 4532 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4533 | "Possible attempt to put comments in qw() list"); |
4534 | ++warned; | |
4535 | } | |
4536 | } | |
4537 | } | |
4538 | else { | |
4539 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4540 | } | |
4541 | words = append_elem(OP_LIST, words, | |
3201ebbd | 4542 | newSVOP(OP_CONST, 0, tokeq(newSVpvn(b, d-b)))); |
55497cff | 4543 | } |
4544 | } | |
8127e0e3 GS |
4545 | if (words) { |
4546 | PL_nextval[PL_nexttoke].opval = words; | |
4547 | force_next(THING); | |
4548 | } | |
55497cff | 4549 | } |
8127e0e3 GS |
4550 | if (PL_lex_stuff) |
4551 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4552 | PL_lex_stuff = Nullsv; |
3280af22 | 4553 | PL_expect = XTERM; |
8127e0e3 | 4554 | TOKEN('('); |
8990e307 | 4555 | |
79072805 | 4556 | case KEY_qq: |
09bef843 | 4557 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4558 | if (!s) |
85e6fe83 | 4559 | missingterm((char*)0); |
a0d0e21e | 4560 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4561 | if (SvIVX(PL_lex_stuff) == '\'') |
4562 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4563 | TERM(sublex_start()); |
4564 | ||
8782bef2 GB |
4565 | case KEY_qr: |
4566 | s = scan_pat(s,OP_QR); | |
4567 | TERM(sublex_start()); | |
4568 | ||
79072805 | 4569 | case KEY_qx: |
09bef843 | 4570 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4571 | if (!s) |
85e6fe83 | 4572 | missingterm((char*)0); |
79072805 LW |
4573 | yylval.ival = OP_BACKTICK; |
4574 | set_csh(); | |
4575 | TERM(sublex_start()); | |
4576 | ||
4577 | case KEY_return: | |
4578 | OLDLOP(OP_RETURN); | |
4579 | ||
4580 | case KEY_require: | |
a7cb1f99 GS |
4581 | s = skipspace(s); |
4582 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4583 | s = force_version(s); | |
4584 | } | |
4585 | else { | |
4586 | *PL_tokenbuf = '\0'; | |
4587 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4588 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4589 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4590 | else if (*s == '<') | |
4591 | yyerror("<> should be quotes"); | |
4592 | } | |
463ee0b2 | 4593 | UNI(OP_REQUIRE); |
79072805 LW |
4594 | |
4595 | case KEY_reset: | |
4596 | UNI(OP_RESET); | |
4597 | ||
4598 | case KEY_redo: | |
a0d0e21e | 4599 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4600 | LOOPX(OP_REDO); |
4601 | ||
4602 | case KEY_rename: | |
a0d0e21e | 4603 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4604 | |
4605 | case KEY_rand: | |
4606 | UNI(OP_RAND); | |
4607 | ||
4608 | case KEY_rmdir: | |
4609 | UNI(OP_RMDIR); | |
4610 | ||
4611 | case KEY_rindex: | |
a0d0e21e | 4612 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4613 | |
4614 | case KEY_read: | |
a0d0e21e | 4615 | LOP(OP_READ,XTERM); |
79072805 LW |
4616 | |
4617 | case KEY_readdir: | |
4618 | UNI(OP_READDIR); | |
4619 | ||
93a17b20 LW |
4620 | case KEY_readline: |
4621 | set_csh(); | |
4622 | UNI(OP_READLINE); | |
4623 | ||
4624 | case KEY_readpipe: | |
4625 | set_csh(); | |
4626 | UNI(OP_BACKTICK); | |
4627 | ||
79072805 LW |
4628 | case KEY_rewinddir: |
4629 | UNI(OP_REWINDDIR); | |
4630 | ||
4631 | case KEY_recv: | |
a0d0e21e | 4632 | LOP(OP_RECV,XTERM); |
79072805 LW |
4633 | |
4634 | case KEY_reverse: | |
a0d0e21e | 4635 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4636 | |
4637 | case KEY_readlink: | |
4638 | UNI(OP_READLINK); | |
4639 | ||
4640 | case KEY_ref: | |
4641 | UNI(OP_REF); | |
4642 | ||
4643 | case KEY_s: | |
4644 | s = scan_subst(s); | |
4645 | if (yylval.opval) | |
4646 | TERM(sublex_start()); | |
4647 | else | |
4648 | TOKEN(1); /* force error */ | |
4649 | ||
a0d0e21e LW |
4650 | case KEY_chomp: |
4651 | UNI(OP_CHOMP); | |
4652 | ||
79072805 LW |
4653 | case KEY_scalar: |
4654 | UNI(OP_SCALAR); | |
4655 | ||
4656 | case KEY_select: | |
a0d0e21e | 4657 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4658 | |
4659 | case KEY_seek: | |
a0d0e21e | 4660 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4661 | |
4662 | case KEY_semctl: | |
a0d0e21e | 4663 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4664 | |
4665 | case KEY_semget: | |
a0d0e21e | 4666 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4667 | |
4668 | case KEY_semop: | |
a0d0e21e | 4669 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4670 | |
4671 | case KEY_send: | |
a0d0e21e | 4672 | LOP(OP_SEND,XTERM); |
79072805 LW |
4673 | |
4674 | case KEY_setpgrp: | |
a0d0e21e | 4675 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4676 | |
4677 | case KEY_setpriority: | |
a0d0e21e | 4678 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4679 | |
4680 | case KEY_sethostent: | |
ff68c719 | 4681 | UNI(OP_SHOSTENT); |
79072805 LW |
4682 | |
4683 | case KEY_setnetent: | |
ff68c719 | 4684 | UNI(OP_SNETENT); |
79072805 LW |
4685 | |
4686 | case KEY_setservent: | |
ff68c719 | 4687 | UNI(OP_SSERVENT); |
79072805 LW |
4688 | |
4689 | case KEY_setprotoent: | |
ff68c719 | 4690 | UNI(OP_SPROTOENT); |
79072805 LW |
4691 | |
4692 | case KEY_setpwent: | |
4693 | FUN0(OP_SPWENT); | |
4694 | ||
4695 | case KEY_setgrent: | |
4696 | FUN0(OP_SGRENT); | |
4697 | ||
4698 | case KEY_seekdir: | |
a0d0e21e | 4699 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4700 | |
4701 | case KEY_setsockopt: | |
a0d0e21e | 4702 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4703 | |
4704 | case KEY_shift: | |
4705 | UNI(OP_SHIFT); | |
4706 | ||
4707 | case KEY_shmctl: | |
a0d0e21e | 4708 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4709 | |
4710 | case KEY_shmget: | |
a0d0e21e | 4711 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4712 | |
4713 | case KEY_shmread: | |
a0d0e21e | 4714 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4715 | |
4716 | case KEY_shmwrite: | |
a0d0e21e | 4717 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4718 | |
4719 | case KEY_shutdown: | |
a0d0e21e | 4720 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4721 | |
4722 | case KEY_sin: | |
4723 | UNI(OP_SIN); | |
4724 | ||
4725 | case KEY_sleep: | |
4726 | UNI(OP_SLEEP); | |
4727 | ||
4728 | case KEY_socket: | |
a0d0e21e | 4729 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4730 | |
4731 | case KEY_socketpair: | |
a0d0e21e | 4732 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4733 | |
4734 | case KEY_sort: | |
3280af22 | 4735 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4736 | s = skipspace(s); |
4737 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4738 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4739 | PL_expect = XTERM; |
15f0808c | 4740 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4741 | LOP(OP_SORT,XREF); |
79072805 LW |
4742 | |
4743 | case KEY_split: | |
a0d0e21e | 4744 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4745 | |
4746 | case KEY_sprintf: | |
a0d0e21e | 4747 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4748 | |
4749 | case KEY_splice: | |
a0d0e21e | 4750 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4751 | |
4752 | case KEY_sqrt: | |
4753 | UNI(OP_SQRT); | |
4754 | ||
4755 | case KEY_srand: | |
4756 | UNI(OP_SRAND); | |
4757 | ||
4758 | case KEY_stat: | |
4759 | UNI(OP_STAT); | |
4760 | ||
4761 | case KEY_study: | |
79072805 LW |
4762 | UNI(OP_STUDY); |
4763 | ||
4764 | case KEY_substr: | |
a0d0e21e | 4765 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4766 | |
4767 | case KEY_format: | |
4768 | case KEY_sub: | |
93a17b20 | 4769 | really_sub: |
09bef843 | 4770 | { |
3280af22 | 4771 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4772 | SSize_t tboffset; |
09bef843 SB |
4773 | expectation attrful; |
4774 | bool have_name, have_proto; | |
4775 | int key = tmp; | |
4776 | ||
4777 | s = skipspace(s); | |
4778 | ||
7e2040f0 | 4779 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4780 | (*s == ':' && s[1] == ':')) |
4781 | { | |
4782 | PL_expect = XBLOCK; | |
4783 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4784 | /* remember buffer pos'n for later force_word */ |
4785 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4786 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4787 | if (strchr(tmpbuf, ':')) | |
4788 | sv_setpv(PL_subname, tmpbuf); | |
4789 | else { | |
4790 | sv_setsv(PL_subname,PL_curstname); | |
4791 | sv_catpvn(PL_subname,"::",2); | |
4792 | sv_catpvn(PL_subname,tmpbuf,len); | |
4793 | } | |
4794 | s = skipspace(d); | |
4795 | have_name = TRUE; | |
4796 | } | |
463ee0b2 | 4797 | else { |
09bef843 SB |
4798 | if (key == KEY_my) |
4799 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4800 | PL_expect = XTERMBLOCK; | |
4801 | attrful = XATTRTERM; | |
4802 | sv_setpv(PL_subname,"?"); | |
4803 | have_name = FALSE; | |
463ee0b2 | 4804 | } |
4633a7c4 | 4805 | |
09bef843 SB |
4806 | if (key == KEY_format) { |
4807 | if (*s == '=') | |
4808 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4809 | if (have_name) | |
b1b65b59 JH |
4810 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4811 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4812 | OPERATOR(FORMAT); |
4813 | } | |
79072805 | 4814 | |
09bef843 SB |
4815 | /* Look for a prototype */ |
4816 | if (*s == '(') { | |
4817 | char *p; | |
4818 | ||
4819 | s = scan_str(s,FALSE,FALSE); | |
4820 | if (!s) { | |
4821 | if (PL_lex_stuff) | |
4822 | SvREFCNT_dec(PL_lex_stuff); | |
4823 | PL_lex_stuff = Nullsv; | |
4824 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4825 | } | |
4826 | /* strip spaces */ | |
4827 | d = SvPVX(PL_lex_stuff); | |
4828 | tmp = 0; | |
4829 | for (p = d; *p; ++p) { | |
4830 | if (!isSPACE(*p)) | |
4831 | d[tmp++] = *p; | |
4832 | } | |
4833 | d[tmp] = '\0'; | |
4834 | SvCUR(PL_lex_stuff) = tmp; | |
4835 | have_proto = TRUE; | |
68dc0745 | 4836 | |
09bef843 | 4837 | s = skipspace(s); |
4633a7c4 | 4838 | } |
09bef843 SB |
4839 | else |
4840 | have_proto = FALSE; | |
4841 | ||
4842 | if (*s == ':' && s[1] != ':') | |
4843 | PL_expect = attrful; | |
4844 | ||
4845 | if (have_proto) { | |
b1b65b59 JH |
4846 | PL_nextval[PL_nexttoke].opval = |
4847 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4848 | PL_lex_stuff = Nullsv; |
4849 | force_next(THING); | |
68dc0745 | 4850 | } |
09bef843 SB |
4851 | if (!have_name) { |
4852 | sv_setpv(PL_subname,"__ANON__"); | |
4853 | TOKEN(ANONSUB); | |
4633a7c4 | 4854 | } |
b1b65b59 JH |
4855 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4856 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4857 | if (key == KEY_my) |
4858 | TOKEN(MYSUB); | |
4859 | TOKEN(SUB); | |
4633a7c4 | 4860 | } |
79072805 LW |
4861 | |
4862 | case KEY_system: | |
4863 | set_csh(); | |
a0d0e21e | 4864 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4865 | |
4866 | case KEY_symlink: | |
a0d0e21e | 4867 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4868 | |
4869 | case KEY_syscall: | |
a0d0e21e | 4870 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4871 | |
c07a80fd | 4872 | case KEY_sysopen: |
4873 | LOP(OP_SYSOPEN,XTERM); | |
4874 | ||
137443ea | 4875 | case KEY_sysseek: |
4876 | LOP(OP_SYSSEEK,XTERM); | |
4877 | ||
79072805 | 4878 | case KEY_sysread: |
a0d0e21e | 4879 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4880 | |
4881 | case KEY_syswrite: | |
a0d0e21e | 4882 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4883 | |
4884 | case KEY_tr: | |
4885 | s = scan_trans(s); | |
4886 | TERM(sublex_start()); | |
4887 | ||
4888 | case KEY_tell: | |
4889 | UNI(OP_TELL); | |
4890 | ||
4891 | case KEY_telldir: | |
4892 | UNI(OP_TELLDIR); | |
4893 | ||
463ee0b2 | 4894 | case KEY_tie: |
a0d0e21e | 4895 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4896 | |
c07a80fd | 4897 | case KEY_tied: |
4898 | UNI(OP_TIED); | |
4899 | ||
79072805 LW |
4900 | case KEY_time: |
4901 | FUN0(OP_TIME); | |
4902 | ||
4903 | case KEY_times: | |
4904 | FUN0(OP_TMS); | |
4905 | ||
4906 | case KEY_truncate: | |
a0d0e21e | 4907 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4908 | |
4909 | case KEY_uc: | |
4910 | UNI(OP_UC); | |
4911 | ||
4912 | case KEY_ucfirst: | |
4913 | UNI(OP_UCFIRST); | |
4914 | ||
463ee0b2 LW |
4915 | case KEY_untie: |
4916 | UNI(OP_UNTIE); | |
4917 | ||
79072805 | 4918 | case KEY_until: |
57843af0 | 4919 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4920 | OPERATOR(UNTIL); |
4921 | ||
4922 | case KEY_unless: | |
57843af0 | 4923 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4924 | OPERATOR(UNLESS); |
4925 | ||
4926 | case KEY_unlink: | |
a0d0e21e | 4927 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4928 | |
4929 | case KEY_undef: | |
4930 | UNI(OP_UNDEF); | |
4931 | ||
4932 | case KEY_unpack: | |
a0d0e21e | 4933 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4934 | |
4935 | case KEY_utime: | |
a0d0e21e | 4936 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4937 | |
4938 | case KEY_umask: | |
e476b1b5 | 4939 | if (ckWARN(WARN_UMASK)) { |
3280af22 | 4940 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 | 4941 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4942 | Perl_warner(aTHX_ WARN_UMASK, |
4438c4b7 | 4943 | "umask: argument is missing initial 0"); |
748a9306 | 4944 | } |
79072805 LW |
4945 | UNI(OP_UMASK); |
4946 | ||
4947 | case KEY_unshift: | |
a0d0e21e LW |
4948 | LOP(OP_UNSHIFT,XTERM); |
4949 | ||
4950 | case KEY_use: | |
3280af22 | 4951 | if (PL_expect != XSTATE) |
a0d0e21e | 4952 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4953 | s = skipspace(s); |
a7cb1f99 | 4954 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4955 | s = force_version(s); |
a7cb1f99 | 4956 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4957 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4958 | force_next(WORD); |
4959 | } | |
4960 | } | |
4961 | else { | |
4962 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4963 | s = force_version(s); | |
4964 | } | |
a0d0e21e LW |
4965 | yylval.ival = 1; |
4966 | OPERATOR(USE); | |
79072805 LW |
4967 | |
4968 | case KEY_values: | |
4969 | UNI(OP_VALUES); | |
4970 | ||
4971 | case KEY_vec: | |
a0d0e21e | 4972 | LOP(OP_VEC,XTERM); |
79072805 LW |
4973 | |
4974 | case KEY_while: | |
57843af0 | 4975 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4976 | OPERATOR(WHILE); |
4977 | ||
4978 | case KEY_warn: | |
3280af22 | 4979 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4980 | LOP(OP_WARN,XTERM); |
79072805 LW |
4981 | |
4982 | case KEY_wait: | |
4983 | FUN0(OP_WAIT); | |
4984 | ||
4985 | case KEY_waitpid: | |
a0d0e21e | 4986 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4987 | |
4988 | case KEY_wantarray: | |
4989 | FUN0(OP_WANTARRAY); | |
4990 | ||
4991 | case KEY_write: | |
9d116dd7 JH |
4992 | #ifdef EBCDIC |
4993 | { | |
4994 | static char ctl_l[2]; | |
4995 | ||
4996 | if (ctl_l[0] == '\0') | |
4997 | ctl_l[0] = toCTRL('L'); | |
4998 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4999 | } | |
5000 | #else | |
5001 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5002 | #endif | |
79072805 LW |
5003 | UNI(OP_ENTERWRITE); |
5004 | ||
5005 | case KEY_x: | |
3280af22 | 5006 | if (PL_expect == XOPERATOR) |
79072805 LW |
5007 | Mop(OP_REPEAT); |
5008 | check_uni(); | |
5009 | goto just_a_word; | |
5010 | ||
a0d0e21e LW |
5011 | case KEY_xor: |
5012 | yylval.ival = OP_XOR; | |
5013 | OPERATOR(OROP); | |
5014 | ||
79072805 LW |
5015 | case KEY_y: |
5016 | s = scan_trans(s); | |
5017 | TERM(sublex_start()); | |
5018 | } | |
49dc05e3 | 5019 | }} |
79072805 | 5020 | } |
bf4acbe4 GS |
5021 | #ifdef __SC__ |
5022 | #pragma segment Main | |
5023 | #endif | |
79072805 LW |
5024 | |
5025 | I32 | |
864dbfa3 | 5026 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5027 | { |
5028 | switch (*d) { | |
5029 | case '_': | |
5030 | if (d[1] == '_') { | |
a0d0e21e | 5031 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5032 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5033 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5034 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5035 | if (strEQ(d,"__END__")) return KEY___END__; |
5036 | } | |
5037 | break; | |
8990e307 LW |
5038 | case 'A': |
5039 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5040 | break; | |
79072805 | 5041 | case 'a': |
463ee0b2 LW |
5042 | switch (len) { |
5043 | case 3: | |
a0d0e21e LW |
5044 | if (strEQ(d,"and")) return -KEY_and; |
5045 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5046 | break; |
463ee0b2 | 5047 | case 5: |
a0d0e21e LW |
5048 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5049 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5050 | break; |
5051 | case 6: | |
a0d0e21e | 5052 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5053 | break; |
5054 | } | |
79072805 LW |
5055 | break; |
5056 | case 'B': | |
5057 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5058 | break; |
79072805 | 5059 | case 'b': |
a0d0e21e LW |
5060 | if (strEQ(d,"bless")) return -KEY_bless; |
5061 | if (strEQ(d,"bind")) return -KEY_bind; | |
5062 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5063 | break; | |
5064 | case 'C': | |
5065 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5066 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5067 | break; |
5068 | case 'c': | |
5069 | switch (len) { | |
5070 | case 3: | |
a0d0e21e LW |
5071 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5072 | if (strEQ(d,"chr")) return -KEY_chr; | |
5073 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5074 | break; |
5075 | case 4: | |
5076 | if (strEQ(d,"chop")) return KEY_chop; | |
5077 | break; | |
5078 | case 5: | |
a0d0e21e LW |
5079 | if (strEQ(d,"close")) return -KEY_close; |
5080 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
5081 | if (strEQ(d,"chomp")) return KEY_chomp; | |
5082 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
5083 | if (strEQ(d,"chown")) return -KEY_chown; | |
5084 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5085 | break; |
5086 | case 6: | |
a0d0e21e LW |
5087 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5088 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5089 | break; |
5090 | case 7: | |
a0d0e21e | 5091 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5092 | break; |
5093 | case 8: | |
a0d0e21e LW |
5094 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5095 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5096 | break; |
5097 | } | |
5098 | break; | |
ed6116ce LW |
5099 | case 'D': |
5100 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5101 | break; | |
79072805 LW |
5102 | case 'd': |
5103 | switch (len) { | |
5104 | case 2: | |
5105 | if (strEQ(d,"do")) return KEY_do; | |
5106 | break; | |
5107 | case 3: | |
a0d0e21e | 5108 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5109 | break; |
5110 | case 4: | |
a0d0e21e | 5111 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5112 | break; |
5113 | case 6: | |
5114 | if (strEQ(d,"delete")) return KEY_delete; | |
5115 | break; | |
5116 | case 7: | |
5117 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5118 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5119 | break; |
5120 | case 8: | |
a0d0e21e | 5121 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5122 | break; |
5123 | } | |
5124 | break; | |
5125 | case 'E': | |
a0d0e21e | 5126 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
5127 | if (strEQ(d,"END")) return KEY_END; |
5128 | break; | |
5129 | case 'e': | |
5130 | switch (len) { | |
5131 | case 2: | |
a0d0e21e | 5132 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5133 | break; |
5134 | case 3: | |
a0d0e21e LW |
5135 | if (strEQ(d,"eof")) return -KEY_eof; |
5136 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5137 | break; |
5138 | case 4: | |
5139 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5140 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5141 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5142 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
5143 | if (strEQ(d,"each")) return KEY_each; |
5144 | break; | |
5145 | case 5: | |
5146 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5147 | break; | |
a0d0e21e LW |
5148 | case 6: |
5149 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5150 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5151 | break; |
79072805 | 5152 | case 8: |
a0d0e21e LW |
5153 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5154 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5155 | break; |
5156 | case 9: | |
a0d0e21e | 5157 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5158 | break; |
5159 | case 10: | |
a0d0e21e LW |
5160 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5161 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5162 | break; |
5163 | case 11: | |
a0d0e21e | 5164 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5165 | break; |
a687059c | 5166 | } |
a687059c | 5167 | break; |
79072805 LW |
5168 | case 'f': |
5169 | switch (len) { | |
5170 | case 3: | |
5171 | if (strEQ(d,"for")) return KEY_for; | |
5172 | break; | |
5173 | case 4: | |
a0d0e21e | 5174 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5175 | break; |
5176 | case 5: | |
a0d0e21e LW |
5177 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5178 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5179 | break; |
5180 | case 6: | |
5181 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5182 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5183 | break; |
5184 | case 7: | |
5185 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5186 | break; | |
5187 | case 8: | |
a0d0e21e | 5188 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5189 | break; |
378cc40b | 5190 | } |
a687059c | 5191 | break; |
79072805 LW |
5192 | case 'G': |
5193 | if (len == 2) { | |
a0d0e21e LW |
5194 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5195 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5196 | } |
a687059c | 5197 | break; |
79072805 | 5198 | case 'g': |
a687059c LW |
5199 | if (strnEQ(d,"get",3)) { |
5200 | d += 3; | |
5201 | if (*d == 'p') { | |
79072805 LW |
5202 | switch (len) { |
5203 | case 7: | |
a0d0e21e LW |
5204 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5205 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5206 | break; |
5207 | case 8: | |
a0d0e21e LW |
5208 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5209 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5210 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5211 | break; |
5212 | case 11: | |
a0d0e21e LW |
5213 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5214 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5215 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5216 | break; |
5217 | case 14: | |
a0d0e21e | 5218 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5219 | break; |
5220 | case 16: | |
a0d0e21e | 5221 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5222 | break; |
5223 | } | |
a687059c LW |
5224 | } |
5225 | else if (*d == 'h') { | |
a0d0e21e LW |
5226 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5227 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5228 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5229 | } |
5230 | else if (*d == 'n') { | |
a0d0e21e LW |
5231 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5232 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5233 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5234 | } |
5235 | else if (*d == 's') { | |
a0d0e21e LW |
5236 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5237 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5238 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5239 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5240 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5241 | } |
5242 | else if (*d == 'g') { | |
a0d0e21e LW |
5243 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5244 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5245 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5246 | } |
5247 | else if (*d == 'l') { | |
a0d0e21e | 5248 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5249 | } |
a0d0e21e | 5250 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5251 | break; |
a687059c | 5252 | } |
79072805 LW |
5253 | switch (len) { |
5254 | case 2: | |
a0d0e21e LW |
5255 | if (strEQ(d,"gt")) return -KEY_gt; |
5256 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5257 | break; |
5258 | case 4: | |
5259 | if (strEQ(d,"grep")) return KEY_grep; | |
5260 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5261 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5262 | break; |
5263 | case 6: | |
a0d0e21e | 5264 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5265 | break; |
378cc40b | 5266 | } |
a687059c | 5267 | break; |
79072805 | 5268 | case 'h': |
a0d0e21e | 5269 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5270 | break; |
7d07dbc2 MB |
5271 | case 'I': |
5272 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5273 | break; | |
79072805 LW |
5274 | case 'i': |
5275 | switch (len) { | |
5276 | case 2: | |
5277 | if (strEQ(d,"if")) return KEY_if; | |
5278 | break; | |
5279 | case 3: | |
a0d0e21e | 5280 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5281 | break; |
5282 | case 5: | |
a0d0e21e LW |
5283 | if (strEQ(d,"index")) return -KEY_index; |
5284 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5285 | break; |
5286 | } | |
a687059c | 5287 | break; |
79072805 | 5288 | case 'j': |
a0d0e21e | 5289 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5290 | break; |
79072805 LW |
5291 | case 'k': |
5292 | if (len == 4) { | |
5293 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5294 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5295 | } |
79072805 LW |
5296 | break; |
5297 | case 'L': | |
5298 | if (len == 2) { | |
a0d0e21e LW |
5299 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5300 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5301 | } |
79072805 LW |
5302 | break; |
5303 | case 'l': | |
5304 | switch (len) { | |
5305 | case 2: | |
a0d0e21e LW |
5306 | if (strEQ(d,"lt")) return -KEY_lt; |
5307 | if (strEQ(d,"le")) return -KEY_le; | |
5308 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5309 | break; |
5310 | case 3: | |
a0d0e21e | 5311 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5312 | break; |
5313 | case 4: | |
5314 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5315 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5316 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5317 | break; |
79072805 LW |
5318 | case 5: |
5319 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5320 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5321 | break; |
5322 | case 6: | |
a0d0e21e LW |
5323 | if (strEQ(d,"length")) return -KEY_length; |
5324 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5325 | break; |
5326 | case 7: | |
a0d0e21e | 5327 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5328 | break; |
5329 | case 9: | |
a0d0e21e | 5330 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5331 | break; |
5332 | } | |
a687059c | 5333 | break; |
79072805 LW |
5334 | case 'm': |
5335 | switch (len) { | |
5336 | case 1: return KEY_m; | |
93a17b20 LW |
5337 | case 2: |
5338 | if (strEQ(d,"my")) return KEY_my; | |
5339 | break; | |
a0d0e21e LW |
5340 | case 3: |
5341 | if (strEQ(d,"map")) return KEY_map; | |
5342 | break; | |
79072805 | 5343 | case 5: |
a0d0e21e | 5344 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5345 | break; |
5346 | case 6: | |
a0d0e21e LW |
5347 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5348 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5349 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5350 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5351 | break; |
5352 | } | |
a687059c | 5353 | break; |
79072805 | 5354 | case 'N': |
a0d0e21e | 5355 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5356 | break; |
79072805 LW |
5357 | case 'n': |
5358 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5359 | if (strEQ(d,"ne")) return -KEY_ne; |
5360 | if (strEQ(d,"not")) return -KEY_not; | |
5361 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5362 | break; |
79072805 LW |
5363 | case 'o': |
5364 | switch (len) { | |
463ee0b2 | 5365 | case 2: |
a0d0e21e | 5366 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5367 | break; |
79072805 | 5368 | case 3: |
a0d0e21e LW |
5369 | if (strEQ(d,"ord")) return -KEY_ord; |
5370 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5371 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5372 | break; |
5373 | case 4: | |
a0d0e21e | 5374 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5375 | break; |
5376 | case 7: | |
a0d0e21e | 5377 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5378 | break; |
fe14fcc3 | 5379 | } |
a687059c | 5380 | break; |
79072805 LW |
5381 | case 'p': |
5382 | switch (len) { | |
5383 | case 3: | |
5384 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5385 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5386 | break; |
5387 | case 4: | |
5388 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5389 | if (strEQ(d,"pack")) return -KEY_pack; |
5390 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5391 | break; |
5392 | case 5: | |
5393 | if (strEQ(d,"print")) return KEY_print; | |
5394 | break; | |
5395 | case 6: | |
5396 | if (strEQ(d,"printf")) return KEY_printf; | |
5397 | break; | |
5398 | case 7: | |
5399 | if (strEQ(d,"package")) return KEY_package; | |
5400 | break; | |
c07a80fd | 5401 | case 9: |
5402 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5403 | } |
79072805 LW |
5404 | break; |
5405 | case 'q': | |
5406 | if (len <= 2) { | |
5407 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5408 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5409 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5410 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5411 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5412 | } |
a0d0e21e | 5413 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5414 | break; |
5415 | case 'r': | |
5416 | switch (len) { | |
5417 | case 3: | |
a0d0e21e | 5418 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5419 | break; |
5420 | case 4: | |
a0d0e21e LW |
5421 | if (strEQ(d,"read")) return -KEY_read; |
5422 | if (strEQ(d,"rand")) return -KEY_rand; | |
5423 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5424 | if (strEQ(d,"redo")) return KEY_redo; |
5425 | break; | |
5426 | case 5: | |
a0d0e21e LW |
5427 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5428 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5429 | break; |
5430 | case 6: | |
5431 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5432 | if (strEQ(d,"rename")) return -KEY_rename; |
5433 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5434 | break; |
5435 | case 7: | |
a0d0e21e LW |
5436 | if (strEQ(d,"require")) return -KEY_require; |
5437 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5438 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5439 | break; |
5440 | case 8: | |
a0d0e21e LW |
5441 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5442 | if (strEQ(d,"readline")) return -KEY_readline; | |
5443 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5444 | break; |
5445 | case 9: | |
a0d0e21e | 5446 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5447 | break; |
a687059c | 5448 | } |
79072805 LW |
5449 | break; |
5450 | case 's': | |
a687059c | 5451 | switch (d[1]) { |
79072805 | 5452 | case 0: return KEY_s; |
a687059c | 5453 | case 'c': |
79072805 | 5454 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5455 | break; |
5456 | case 'e': | |
79072805 LW |
5457 | switch (len) { |
5458 | case 4: | |
a0d0e21e LW |
5459 | if (strEQ(d,"seek")) return -KEY_seek; |
5460 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5461 | break; |
5462 | case 5: | |
a0d0e21e | 5463 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5464 | break; |
5465 | case 6: | |
a0d0e21e LW |
5466 | if (strEQ(d,"select")) return -KEY_select; |
5467 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5468 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5469 | break; |
5470 | case 7: | |
a0d0e21e LW |
5471 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5472 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5473 | break; |
5474 | case 8: | |
a0d0e21e LW |
5475 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5476 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5477 | break; |
5478 | case 9: | |
a0d0e21e | 5479 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5480 | break; |
5481 | case 10: | |
a0d0e21e LW |
5482 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5483 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5484 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5485 | break; |
5486 | case 11: | |
a0d0e21e LW |
5487 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5488 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5489 | break; |
5490 | } | |
a687059c LW |
5491 | break; |
5492 | case 'h': | |
79072805 LW |
5493 | switch (len) { |
5494 | case 5: | |
5495 | if (strEQ(d,"shift")) return KEY_shift; | |
5496 | break; | |
5497 | case 6: | |
a0d0e21e LW |
5498 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5499 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5500 | break; |
5501 | case 7: | |
a0d0e21e | 5502 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5503 | break; |
5504 | case 8: | |
a0d0e21e LW |
5505 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5506 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5507 | break; |
5508 | } | |
a687059c LW |
5509 | break; |
5510 | case 'i': | |
a0d0e21e | 5511 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5512 | break; |
5513 | case 'l': | |
a0d0e21e | 5514 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5515 | break; |
5516 | case 'o': | |
79072805 | 5517 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5518 | if (strEQ(d,"socket")) return -KEY_socket; |
5519 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5520 | break; |
5521 | case 'p': | |
79072805 | 5522 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5523 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5524 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5525 | break; |
5526 | case 'q': | |
a0d0e21e | 5527 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5528 | break; |
5529 | case 'r': | |
a0d0e21e | 5530 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5531 | break; |
5532 | case 't': | |
a0d0e21e | 5533 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5534 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5535 | break; |
5536 | case 'u': | |
a0d0e21e | 5537 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5538 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5539 | break; |
5540 | case 'y': | |
79072805 LW |
5541 | switch (len) { |
5542 | case 6: | |
a0d0e21e | 5543 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5544 | break; |
5545 | case 7: | |
a0d0e21e LW |
5546 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5547 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5548 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5549 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5550 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5551 | break; |
5552 | case 8: | |
a0d0e21e | 5553 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5554 | break; |
a687059c | 5555 | } |
a687059c LW |
5556 | break; |
5557 | } | |
5558 | break; | |
79072805 LW |
5559 | case 't': |
5560 | switch (len) { | |
5561 | case 2: | |
5562 | if (strEQ(d,"tr")) return KEY_tr; | |
5563 | break; | |
463ee0b2 LW |
5564 | case 3: |
5565 | if (strEQ(d,"tie")) return KEY_tie; | |
5566 | break; | |
79072805 | 5567 | case 4: |
a0d0e21e | 5568 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5569 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5570 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5571 | break; |
5572 | case 5: | |
a0d0e21e | 5573 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5574 | break; |
5575 | case 7: | |
a0d0e21e | 5576 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5577 | break; |
5578 | case 8: | |
a0d0e21e | 5579 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5580 | break; |
378cc40b | 5581 | } |
a687059c | 5582 | break; |
79072805 LW |
5583 | case 'u': |
5584 | switch (len) { | |
5585 | case 2: | |
a0d0e21e LW |
5586 | if (strEQ(d,"uc")) return -KEY_uc; |
5587 | break; | |
5588 | case 3: | |
5589 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5590 | break; |
5591 | case 5: | |
5592 | if (strEQ(d,"undef")) return KEY_undef; | |
5593 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5594 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5595 | if (strEQ(d,"utime")) return -KEY_utime; |
5596 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5597 | break; |
5598 | case 6: | |
5599 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5600 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5601 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5602 | break; |
5603 | case 7: | |
5604 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5605 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5606 | break; |
a687059c LW |
5607 | } |
5608 | break; | |
79072805 | 5609 | case 'v': |
a0d0e21e LW |
5610 | if (strEQ(d,"values")) return -KEY_values; |
5611 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5612 | break; |
79072805 LW |
5613 | case 'w': |
5614 | switch (len) { | |
5615 | case 4: | |
a0d0e21e LW |
5616 | if (strEQ(d,"warn")) return -KEY_warn; |
5617 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5618 | break; |
5619 | case 5: | |
5620 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5621 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5622 | break; |
5623 | case 7: | |
a0d0e21e | 5624 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5625 | break; |
5626 | case 9: | |
a0d0e21e | 5627 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5628 | break; |
2f3197b3 | 5629 | } |
a687059c | 5630 | break; |
79072805 | 5631 | case 'x': |
a0d0e21e LW |
5632 | if (len == 1) return -KEY_x; |
5633 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5634 | break; |
79072805 LW |
5635 | case 'y': |
5636 | if (len == 1) return KEY_y; | |
5637 | break; | |
5638 | case 'z': | |
a687059c LW |
5639 | break; |
5640 | } | |
79072805 | 5641 | return 0; |
a687059c LW |
5642 | } |
5643 | ||
76e3520e | 5644 | STATIC void |
cea2e8a9 | 5645 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5646 | { |
2f3197b3 LW |
5647 | char *w; |
5648 | ||
d008e5eb GS |
5649 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5650 | dTHR; /* only for ckWARN */ | |
5651 | if (ckWARN(WARN_SYNTAX)) { | |
5652 | int level = 1; | |
5653 | for (w = s+2; *w && level; w++) { | |
5654 | if (*w == '(') | |
5655 | ++level; | |
5656 | else if (*w == ')') | |
5657 | --level; | |
5658 | } | |
5659 | if (*w) | |
5660 | for (; *w && isSPACE(*w); w++) ; | |
5661 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5662 | Perl_warner(aTHX_ WARN_SYNTAX, |
5663 | "%s (...) interpreted as function",name); | |
d008e5eb | 5664 | } |
2f3197b3 | 5665 | } |
3280af22 | 5666 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5667 | s++; |
a687059c LW |
5668 | if (*s == '(') |
5669 | s++; | |
3280af22 | 5670 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5671 | s++; |
7e2040f0 | 5672 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5673 | w = s++; |
7e2040f0 | 5674 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5675 | s++; |
3280af22 | 5676 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5677 | s++; |
e929a76b | 5678 | if (*s == ',') { |
463ee0b2 | 5679 | int kw; |
e929a76b | 5680 | *s = '\0'; |
864dbfa3 | 5681 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5682 | *s = ','; |
463ee0b2 | 5683 | if (kw) |
e929a76b | 5684 | return; |
cea2e8a9 | 5685 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5686 | } |
5687 | } | |
5688 | } | |
5689 | ||
423cee85 JH |
5690 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5691 | Best used as sv=new_constant(..., sv, ...). | |
5692 | If s, pv are NULL, calls subroutine with one argument, | |
5693 | and type is used with error messages only. */ | |
5694 | ||
b3ac6de7 | 5695 | STATIC SV * |
dff6d3cd | 5696 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 5697 | const char *type) |
b3ac6de7 | 5698 | { |
b3ac6de7 | 5699 | dSP; |
3280af22 | 5700 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5701 | SV *res; |
b3ac6de7 IZ |
5702 | SV **cvp; |
5703 | SV *cv, *typesv; | |
f0af216f | 5704 | const char *why1, *why2, *why3; |
423cee85 | 5705 | |
f0af216f | 5706 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
5707 | SV *msg; |
5708 | ||
f0af216f GS |
5709 | why1 = "%^H is not consistent"; |
5710 | why2 = strEQ(key,"charnames") | |
5711 | ? " (missing \"use charnames ...\"?)" | |
5712 | : ""; | |
5713 | why3 = ""; | |
423cee85 JH |
5714 | report: |
5715 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
f0af216f | 5716 | (type ? type: "undef"), why1, why2, why3); |
423cee85 JH |
5717 | yyerror(SvPVX(msg)); |
5718 | SvREFCNT_dec(msg); | |
5719 | return sv; | |
5720 | } | |
b3ac6de7 IZ |
5721 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
5722 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5723 | why1 = "$^H{"; |
5724 | why2 = key; | |
f0af216f | 5725 | why3 = "} is not defined"; |
423cee85 | 5726 | goto report; |
b3ac6de7 IZ |
5727 | } |
5728 | sv_2mortal(sv); /* Parent created it permanently */ | |
5729 | cv = *cvp; | |
423cee85 JH |
5730 | if (!pv && s) |
5731 | pv = sv_2mortal(newSVpvn(s, len)); | |
5732 | if (type && pv) | |
5733 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5734 | else |
423cee85 JH |
5735 | typesv = &PL_sv_undef; |
5736 | ||
e788e7d3 | 5737 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5738 | ENTER ; |
5739 | SAVETMPS; | |
5740 | ||
5741 | PUSHMARK(SP) ; | |
25eaa213 | 5742 | EXTEND(sp, 4); |
423cee85 JH |
5743 | if (pv) |
5744 | PUSHs(pv); | |
b3ac6de7 | 5745 | PUSHs(sv); |
423cee85 JH |
5746 | if (pv) |
5747 | PUSHs(typesv); | |
b3ac6de7 IZ |
5748 | PUSHs(cv); |
5749 | PUTBACK; | |
423cee85 JH |
5750 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5751 | ||
5752 | SPAGAIN ; | |
5753 | ||
5754 | /* Check the eval first */ | |
9b0e499b | 5755 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
5756 | STRLEN n_a; |
5757 | sv_catpv(ERRSV, "Propagated"); | |
5758 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5759 | (void)POPs; |
423cee85 JH |
5760 | res = SvREFCNT_inc(sv); |
5761 | } | |
5762 | else { | |
5763 | res = POPs; | |
e1f15930 | 5764 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5765 | } |
5766 | ||
5767 | PUTBACK ; | |
5768 | FREETMPS ; | |
5769 | LEAVE ; | |
b3ac6de7 | 5770 | POPSTACK; |
423cee85 | 5771 | |
b3ac6de7 | 5772 | if (!SvOK(res)) { |
423cee85 JH |
5773 | why1 = "Call to &{$^H{"; |
5774 | why2 = key; | |
f0af216f | 5775 | why3 = "}} did not return a defined value"; |
423cee85 JH |
5776 | sv = res; |
5777 | goto report; | |
9b0e499b | 5778 | } |
423cee85 | 5779 | |
9b0e499b | 5780 | return res; |
b3ac6de7 | 5781 | } |
423cee85 | 5782 | |
76e3520e | 5783 | STATIC char * |
cea2e8a9 | 5784 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5785 | { |
5786 | register char *d = dest; | |
8903cb82 | 5787 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5788 | for (;;) { |
8903cb82 | 5789 | if (d >= e) |
cea2e8a9 | 5790 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5791 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5792 | *d++ = *s++; |
7e2040f0 | 5793 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5794 | *d++ = ':'; |
5795 | *d++ = ':'; | |
5796 | s++; | |
5797 | } | |
c3e0f903 | 5798 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5799 | *d++ = *s++; |
5800 | *d++ = *s++; | |
5801 | } | |
834a4ddd | 5802 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5803 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5804 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5805 | t += UTF8SKIP(t); |
5806 | if (d + (t - s) > e) | |
cea2e8a9 | 5807 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5808 | Copy(s, d, t - s, char); |
5809 | d += t - s; | |
5810 | s = t; | |
5811 | } | |
463ee0b2 LW |
5812 | else { |
5813 | *d = '\0'; | |
5814 | *slp = d - dest; | |
5815 | return s; | |
e929a76b | 5816 | } |
378cc40b LW |
5817 | } |
5818 | } | |
5819 | ||
76e3520e | 5820 | STATIC char * |
cea2e8a9 | 5821 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5822 | { |
5823 | register char *d; | |
8903cb82 | 5824 | register char *e; |
79072805 | 5825 | char *bracket = 0; |
748a9306 | 5826 | char funny = *s++; |
378cc40b | 5827 | |
a0d0e21e LW |
5828 | if (isSPACE(*s)) |
5829 | s = skipspace(s); | |
378cc40b | 5830 | d = dest; |
8903cb82 | 5831 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5832 | if (isDIGIT(*s)) { |
8903cb82 | 5833 | while (isDIGIT(*s)) { |
5834 | if (d >= e) | |
cea2e8a9 | 5835 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5836 | *d++ = *s++; |
8903cb82 | 5837 | } |
378cc40b LW |
5838 | } |
5839 | else { | |
463ee0b2 | 5840 | for (;;) { |
8903cb82 | 5841 | if (d >= e) |
cea2e8a9 | 5842 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5843 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5844 | *d++ = *s++; |
7e2040f0 | 5845 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5846 | *d++ = ':'; |
5847 | *d++ = ':'; | |
5848 | s++; | |
5849 | } | |
a0d0e21e | 5850 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5851 | *d++ = *s++; |
5852 | *d++ = *s++; | |
5853 | } | |
834a4ddd | 5854 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5855 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5856 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5857 | t += UTF8SKIP(t); |
5858 | if (d + (t - s) > e) | |
cea2e8a9 | 5859 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5860 | Copy(s, d, t - s, char); |
5861 | d += t - s; | |
5862 | s = t; | |
5863 | } | |
463ee0b2 LW |
5864 | else |
5865 | break; | |
5866 | } | |
378cc40b LW |
5867 | } |
5868 | *d = '\0'; | |
5869 | d = dest; | |
79072805 | 5870 | if (*d) { |
3280af22 NIS |
5871 | if (PL_lex_state != LEX_NORMAL) |
5872 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5873 | return s; |
378cc40b | 5874 | } |
748a9306 | 5875 | if (*s == '$' && s[1] && |
7e2040f0 | 5876 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5877 | { |
4810e5ec | 5878 | return s; |
5cd24f17 | 5879 | } |
79072805 LW |
5880 | if (*s == '{') { |
5881 | bracket = s; | |
5882 | s++; | |
5883 | } | |
5884 | else if (ck_uni) | |
5885 | check_uni(); | |
93a17b20 | 5886 | if (s < send) |
79072805 LW |
5887 | *d = *s++; |
5888 | d[1] = '\0'; | |
2b92dfce | 5889 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5890 | *d = toCTRL(*s); |
5891 | s++; | |
de3bb511 | 5892 | } |
79072805 | 5893 | if (bracket) { |
748a9306 | 5894 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5895 | while (s < send) { |
5896 | char ch = *s++; | |
bf4acbe4 | 5897 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 5898 | *d = ch; |
5899 | break; | |
5900 | } | |
5901 | } | |
748a9306 | 5902 | } |
7e2040f0 | 5903 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 5904 | d++; |
a0ed51b3 LW |
5905 | if (UTF) { |
5906 | e = s; | |
155aba94 | 5907 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 5908 | e += UTF8SKIP(e); |
dfe13c55 | 5909 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5910 | e += UTF8SKIP(e); |
5911 | } | |
5912 | Copy(s, d, e - s, char); | |
5913 | d += e - s; | |
5914 | s = e; | |
5915 | } | |
5916 | else { | |
2b92dfce | 5917 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5918 | *d++ = *s++; |
2b92dfce | 5919 | if (d >= e) |
cea2e8a9 | 5920 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5921 | } |
79072805 | 5922 | *d = '\0'; |
bf4acbe4 | 5923 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 5924 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5925 | dTHR; /* only for ckWARN */ |
599cee73 | 5926 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5927 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5928 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5929 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5930 | funny, dest, brack, funny, dest, brack); |
5931 | } | |
79072805 | 5932 | bracket++; |
a0be28da | 5933 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5934 | return s; |
5935 | } | |
2b92dfce GS |
5936 | } |
5937 | /* Handle extended ${^Foo} variables | |
5938 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5939 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5940 | && isALNUM(*s)) | |
5941 | { | |
5942 | d++; | |
5943 | while (isALNUM(*s) && d < e) { | |
5944 | *d++ = *s++; | |
5945 | } | |
5946 | if (d >= e) | |
cea2e8a9 | 5947 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5948 | *d = '\0'; |
79072805 LW |
5949 | } |
5950 | if (*s == '}') { | |
5951 | s++; | |
3280af22 NIS |
5952 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5953 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5954 | if (funny == '#') |
5955 | funny = '@'; | |
d008e5eb GS |
5956 | if (PL_lex_state == LEX_NORMAL) { |
5957 | dTHR; /* only for ckWARN */ | |
5958 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5959 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5960 | { |
cea2e8a9 | 5961 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5962 | "Ambiguous use of %c{%s} resolved to %c%s", |
5963 | funny, dest, funny, dest); | |
5964 | } | |
5965 | } | |
79072805 LW |
5966 | } |
5967 | else { | |
5968 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5969 | *dest = '\0'; |
79072805 LW |
5970 | } |
5971 | } | |
3280af22 NIS |
5972 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5973 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5974 | return s; |
5975 | } | |
5976 | ||
cea2e8a9 GS |
5977 | void |
5978 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5979 | { |
bbce6d69 | 5980 | if (ch == 'i') |
a0d0e21e | 5981 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5982 | else if (ch == 'g') |
5983 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5984 | else if (ch == 'c') |
5985 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5986 | else if (ch == 'o') |
5987 | *pmfl |= PMf_KEEP; | |
5988 | else if (ch == 'm') | |
5989 | *pmfl |= PMf_MULTILINE; | |
5990 | else if (ch == 's') | |
5991 | *pmfl |= PMf_SINGLELINE; | |
5992 | else if (ch == 'x') | |
5993 | *pmfl |= PMf_EXTENDED; | |
5994 | } | |
378cc40b | 5995 | |
76e3520e | 5996 | STATIC char * |
cea2e8a9 | 5997 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5998 | { |
79072805 LW |
5999 | PMOP *pm; |
6000 | char *s; | |
378cc40b | 6001 | |
09bef843 | 6002 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6003 | if (!s) { |
3280af22 NIS |
6004 | if (PL_lex_stuff) |
6005 | SvREFCNT_dec(PL_lex_stuff); | |
6006 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6007 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 6008 | } |
bbce6d69 | 6009 | |
8782bef2 | 6010 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6011 | if (PL_multi_open == '?') |
79072805 | 6012 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6013 | if(type == OP_QR) { |
6014 | while (*s && strchr("iomsx", *s)) | |
6015 | pmflag(&pm->op_pmflags,*s++); | |
6016 | } | |
6017 | else { | |
6018 | while (*s && strchr("iogcmsx", *s)) | |
6019 | pmflag(&pm->op_pmflags,*s++); | |
6020 | } | |
4633a7c4 | 6021 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6022 | |
3280af22 | 6023 | PL_lex_op = (OP*)pm; |
79072805 | 6024 | yylval.ival = OP_MATCH; |
378cc40b LW |
6025 | return s; |
6026 | } | |
6027 | ||
76e3520e | 6028 | STATIC char * |
cea2e8a9 | 6029 | S_scan_subst(pTHX_ char *start) |
79072805 | 6030 | { |
a0d0e21e | 6031 | register char *s; |
79072805 | 6032 | register PMOP *pm; |
4fdae800 | 6033 | I32 first_start; |
79072805 LW |
6034 | I32 es = 0; |
6035 | ||
79072805 LW |
6036 | yylval.ival = OP_NULL; |
6037 | ||
09bef843 | 6038 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
6039 | |
6040 | if (!s) { | |
3280af22 NIS |
6041 | if (PL_lex_stuff) |
6042 | SvREFCNT_dec(PL_lex_stuff); | |
6043 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6044 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 6045 | } |
79072805 | 6046 | |
3280af22 | 6047 | if (s[-1] == PL_multi_open) |
79072805 LW |
6048 | s--; |
6049 | ||
3280af22 | 6050 | first_start = PL_multi_start; |
09bef843 | 6051 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6052 | if (!s) { |
3280af22 NIS |
6053 | if (PL_lex_stuff) |
6054 | SvREFCNT_dec(PL_lex_stuff); | |
6055 | PL_lex_stuff = Nullsv; | |
6056 | if (PL_lex_repl) | |
6057 | SvREFCNT_dec(PL_lex_repl); | |
6058 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6059 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6060 | } |
3280af22 | 6061 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6062 | |
79072805 | 6063 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6064 | while (*s) { |
a687059c LW |
6065 | if (*s == 'e') { |
6066 | s++; | |
2f3197b3 | 6067 | es++; |
a687059c | 6068 | } |
b3eb6a9b | 6069 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6070 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6071 | else |
6072 | break; | |
378cc40b | 6073 | } |
79072805 LW |
6074 | |
6075 | if (es) { | |
6076 | SV *repl; | |
0244c3a4 GS |
6077 | PL_sublex_info.super_bufptr = s; |
6078 | PL_sublex_info.super_bufend = PL_bufend; | |
6079 | PL_multi_end = 0; | |
79072805 | 6080 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6081 | repl = newSVpvn("",0); |
463ee0b2 | 6082 | while (es-- > 0) |
a0d0e21e | 6083 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6084 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6085 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6086 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6087 | SvEVALED_on(repl); |
3280af22 NIS |
6088 | SvREFCNT_dec(PL_lex_repl); |
6089 | PL_lex_repl = repl; | |
378cc40b | 6090 | } |
79072805 | 6091 | |
4633a7c4 | 6092 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6093 | PL_lex_op = (OP*)pm; |
79072805 | 6094 | yylval.ival = OP_SUBST; |
378cc40b LW |
6095 | return s; |
6096 | } | |
6097 | ||
76e3520e | 6098 | STATIC char * |
cea2e8a9 | 6099 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6100 | { |
a0d0e21e | 6101 | register char* s; |
11343788 | 6102 | OP *o; |
79072805 LW |
6103 | short *tbl; |
6104 | I32 squash; | |
a0ed51b3 | 6105 | I32 del; |
79072805 | 6106 | I32 complement; |
a0ed51b3 LW |
6107 | I32 utf8; |
6108 | I32 count = 0; | |
79072805 LW |
6109 | |
6110 | yylval.ival = OP_NULL; | |
6111 | ||
09bef843 | 6112 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6113 | if (!s) { |
3280af22 NIS |
6114 | if (PL_lex_stuff) |
6115 | SvREFCNT_dec(PL_lex_stuff); | |
6116 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6117 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 6118 | } |
3280af22 | 6119 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6120 | s--; |
6121 | ||
09bef843 | 6122 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6123 | if (!s) { |
3280af22 NIS |
6124 | if (PL_lex_stuff) |
6125 | SvREFCNT_dec(PL_lex_stuff); | |
6126 | PL_lex_stuff = Nullsv; | |
6127 | if (PL_lex_repl) | |
6128 | SvREFCNT_dec(PL_lex_repl); | |
6129 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6130 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6131 | } |
79072805 | 6132 | |
a0ed51b3 LW |
6133 | if (UTF) { |
6134 | o = newSVOP(OP_TRANS, 0, 0); | |
6135 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
6136 | } | |
6137 | else { | |
6138 | New(803,tbl,256,short); | |
6139 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
6140 | utf8 = 0; | |
6141 | } | |
2f3197b3 | 6142 | |
a0ed51b3 LW |
6143 | complement = del = squash = 0; |
6144 | while (strchr("cdsCU", *s)) { | |
395c3793 | 6145 | if (*s == 'c') |
79072805 | 6146 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6147 | else if (*s == 'd') |
a0ed51b3 LW |
6148 | del = OPpTRANS_DELETE; |
6149 | else if (*s == 's') | |
79072805 | 6150 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
6151 | else { |
6152 | switch (count++) { | |
6153 | case 0: | |
6154 | if (*s == 'C') | |
6155 | utf8 &= ~OPpTRANS_FROM_UTF; | |
6156 | else | |
6157 | utf8 |= OPpTRANS_FROM_UTF; | |
6158 | break; | |
6159 | case 1: | |
6160 | if (*s == 'C') | |
6161 | utf8 &= ~OPpTRANS_TO_UTF; | |
6162 | else | |
6163 | utf8 |= OPpTRANS_TO_UTF; | |
6164 | break; | |
6165 | default: | |
cea2e8a9 | 6166 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6167 | } |
6168 | } | |
395c3793 LW |
6169 | s++; |
6170 | } | |
a0ed51b3 | 6171 | o->op_private = del|squash|complement|utf8; |
79072805 | 6172 | |
3280af22 | 6173 | PL_lex_op = o; |
79072805 LW |
6174 | yylval.ival = OP_TRANS; |
6175 | return s; | |
6176 | } | |
6177 | ||
76e3520e | 6178 | STATIC char * |
cea2e8a9 | 6179 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6180 | { |
11343788 | 6181 | dTHR; |
79072805 LW |
6182 | SV *herewas; |
6183 | I32 op_type = OP_SCALAR; | |
6184 | I32 len; | |
6185 | SV *tmpstr; | |
6186 | char term; | |
6187 | register char *d; | |
fc36a67e | 6188 | register char *e; |
4633a7c4 | 6189 | char *peek; |
3280af22 | 6190 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6191 | |
6192 | s += 2; | |
3280af22 NIS |
6193 | d = PL_tokenbuf; |
6194 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6195 | if (!outer) |
79072805 | 6196 | *d++ = '\n'; |
bf4acbe4 | 6197 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6198 | if (*peek && strchr("`'\"",*peek)) { |
6199 | s = peek; | |
79072805 | 6200 | term = *s++; |
3280af22 | 6201 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6202 | d += len; |
3280af22 | 6203 | if (s < PL_bufend) |
79072805 | 6204 | s++; |
79072805 LW |
6205 | } |
6206 | else { | |
6207 | if (*s == '\\') | |
6208 | s++, term = '\''; | |
6209 | else | |
6210 | term = '"'; | |
7e2040f0 | 6211 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6212 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6213 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6214 | if (d < e) |
6215 | *d++ = *s; | |
6216 | } | |
6217 | } | |
3280af22 | 6218 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6219 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6220 | *d++ = '\n'; |
6221 | *d = '\0'; | |
3280af22 | 6222 | len = d - PL_tokenbuf; |
6a27c188 | 6223 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6224 | d = strchr(s, '\r'); |
6225 | if (d) { | |
6226 | char *olds = s; | |
6227 | s = d; | |
3280af22 | 6228 | while (s < PL_bufend) { |
f63a84b2 LW |
6229 | if (*s == '\r') { |
6230 | *d++ = '\n'; | |
6231 | if (*++s == '\n') | |
6232 | s++; | |
6233 | } | |
6234 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6235 | *d++ = *s++; | |
6236 | s++; | |
6237 | } | |
6238 | else | |
6239 | *d++ = *s++; | |
6240 | } | |
6241 | *d = '\0'; | |
3280af22 NIS |
6242 | PL_bufend = d; |
6243 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6244 | s = olds; |
6245 | } | |
6246 | #endif | |
79072805 | 6247 | d = "\n"; |
3280af22 | 6248 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6249 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6250 | else |
79cb57f6 | 6251 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6252 | s += SvCUR(herewas); |
748a9306 | 6253 | |
8d6dde3e | 6254 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6255 | sv_upgrade(tmpstr, SVt_PVIV); |
6256 | if (term == '\'') { | |
79072805 | 6257 | op_type = OP_CONST; |
748a9306 LW |
6258 | SvIVX(tmpstr) = -1; |
6259 | } | |
6260 | else if (term == '`') { | |
79072805 | 6261 | op_type = OP_BACKTICK; |
748a9306 LW |
6262 | SvIVX(tmpstr) = '\\'; |
6263 | } | |
79072805 LW |
6264 | |
6265 | CLINE; | |
57843af0 | 6266 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6267 | PL_multi_open = PL_multi_close = '<'; |
6268 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6269 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6270 | char *bufptr = PL_sublex_info.super_bufptr; | |
6271 | char *bufend = PL_sublex_info.super_bufend; | |
6272 | char *olds = s - SvCUR(herewas); | |
6273 | s = strchr(bufptr, '\n'); | |
6274 | if (!s) | |
6275 | s = bufend; | |
6276 | d = s; | |
6277 | while (s < bufend && | |
6278 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6279 | if (*s++ == '\n') | |
57843af0 | 6280 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6281 | } |
6282 | if (s >= bufend) { | |
57843af0 | 6283 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6284 | missingterm(PL_tokenbuf); |
6285 | } | |
6286 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6287 | sv_setpvn(tmpstr,d+1,s-d); | |
6288 | s += len - 1; | |
6289 | sv_catpvn(herewas,s,bufend-s); | |
6290 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6291 | ||
6292 | s = olds; | |
6293 | goto retval; | |
6294 | } | |
6295 | else if (!outer) { | |
79072805 | 6296 | d = s; |
3280af22 NIS |
6297 | while (s < PL_bufend && |
6298 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6299 | if (*s++ == '\n') |
57843af0 | 6300 | CopLINE_inc(PL_curcop); |
79072805 | 6301 | } |
3280af22 | 6302 | if (s >= PL_bufend) { |
57843af0 | 6303 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6304 | missingterm(PL_tokenbuf); |
79072805 LW |
6305 | } |
6306 | sv_setpvn(tmpstr,d+1,s-d); | |
6307 | s += len - 1; | |
57843af0 | 6308 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6309 | |
3280af22 NIS |
6310 | sv_catpvn(herewas,s,PL_bufend-s); |
6311 | sv_setsv(PL_linestr,herewas); | |
6312 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6313 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6314 | } |
6315 | else | |
6316 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6317 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6318 | if (!outer || |
3280af22 | 6319 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6320 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6321 | missingterm(PL_tokenbuf); |
79072805 | 6322 | } |
57843af0 | 6323 | CopLINE_inc(PL_curcop); |
3280af22 | 6324 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6325 | #ifndef PERL_STRICT_CR |
3280af22 | 6326 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6327 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6328 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6329 | { |
3280af22 NIS |
6330 | PL_bufend[-2] = '\n'; |
6331 | PL_bufend--; | |
6332 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6333 | } |
3280af22 NIS |
6334 | else if (PL_bufend[-1] == '\r') |
6335 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6336 | } |
3280af22 NIS |
6337 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6338 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6339 | #endif |
3280af22 | 6340 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6341 | SV *sv = NEWSV(88,0); |
6342 | ||
93a17b20 | 6343 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6344 | sv_setsv(sv,PL_linestr); |
57843af0 | 6345 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6346 | } |
3280af22 NIS |
6347 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6348 | s = PL_bufend - 1; | |
79072805 | 6349 | *s = ' '; |
3280af22 NIS |
6350 | sv_catsv(PL_linestr,herewas); |
6351 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6352 | } |
6353 | else { | |
3280af22 NIS |
6354 | s = PL_bufend; |
6355 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6356 | } |
6357 | } | |
79072805 | 6358 | s++; |
0244c3a4 | 6359 | retval: |
57843af0 | 6360 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6361 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6362 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6363 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6364 | } |
8990e307 | 6365 | SvREFCNT_dec(herewas); |
3280af22 | 6366 | PL_lex_stuff = tmpstr; |
79072805 LW |
6367 | yylval.ival = op_type; |
6368 | return s; | |
6369 | } | |
6370 | ||
02aa26ce NT |
6371 | /* scan_inputsymbol |
6372 | takes: current position in input buffer | |
6373 | returns: new position in input buffer | |
6374 | side-effects: yylval and lex_op are set. | |
6375 | ||
6376 | This code handles: | |
6377 | ||
6378 | <> read from ARGV | |
6379 | <FH> read from filehandle | |
6380 | <pkg::FH> read from package qualified filehandle | |
6381 | <pkg'FH> read from package qualified filehandle | |
6382 | <$fh> read from filehandle in $fh | |
6383 | <*.h> filename glob | |
6384 | ||
6385 | */ | |
6386 | ||
76e3520e | 6387 | STATIC char * |
cea2e8a9 | 6388 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6389 | { |
02aa26ce | 6390 | register char *s = start; /* current position in buffer */ |
79072805 | 6391 | register char *d; |
fc36a67e | 6392 | register char *e; |
1b420867 | 6393 | char *end; |
79072805 LW |
6394 | I32 len; |
6395 | ||
3280af22 NIS |
6396 | d = PL_tokenbuf; /* start of temp holding space */ |
6397 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6398 | end = strchr(s, '\n'); |
6399 | if (!end) | |
6400 | end = PL_bufend; | |
6401 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6402 | |
6403 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6404 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6405 | */ |
6406 | ||
3280af22 | 6407 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6408 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6409 | if (s >= end) |
cea2e8a9 | 6410 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6411 | |
fc36a67e | 6412 | s++; |
02aa26ce NT |
6413 | |
6414 | /* check for <$fh> | |
6415 | Remember, only scalar variables are interpreted as filehandles by | |
6416 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6417 | treated as a glob() call. | |
6418 | This code makes use of the fact that except for the $ at the front, | |
6419 | a scalar variable and a filehandle look the same. | |
6420 | */ | |
4633a7c4 | 6421 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6422 | |
6423 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6424 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6425 | d++; |
02aa26ce NT |
6426 | |
6427 | /* If we've tried to read what we allow filehandles to look like, and | |
6428 | there's still text left, then it must be a glob() and not a getline. | |
6429 | Use scan_str to pull out the stuff between the <> and treat it | |
6430 | as nothing more than a string. | |
6431 | */ | |
6432 | ||
3280af22 | 6433 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6434 | yylval.ival = OP_GLOB; |
6435 | set_csh(); | |
09bef843 | 6436 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6437 | if (!s) |
cea2e8a9 | 6438 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6439 | return s; |
6440 | } | |
395c3793 | 6441 | else { |
02aa26ce | 6442 | /* we're in a filehandle read situation */ |
3280af22 | 6443 | d = PL_tokenbuf; |
02aa26ce NT |
6444 | |
6445 | /* turn <> into <ARGV> */ | |
79072805 LW |
6446 | if (!len) |
6447 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6448 | |
6449 | /* if <$fh>, create the ops to turn the variable into a | |
6450 | filehandle | |
6451 | */ | |
79072805 | 6452 | if (*d == '$') { |
a0d0e21e | 6453 | I32 tmp; |
02aa26ce NT |
6454 | |
6455 | /* try to find it in the pad for this block, otherwise find | |
6456 | add symbol table ops | |
6457 | */ | |
11343788 MB |
6458 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6459 | OP *o = newOP(OP_PADSV, 0); | |
6460 | o->op_targ = tmp; | |
f5284f61 | 6461 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6462 | } |
6463 | else { | |
6464 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6465 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6466 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6467 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6468 | } |
f5284f61 IZ |
6469 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6470 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6471 | yylval.ival = OP_NULL; |
6472 | } | |
02aa26ce NT |
6473 | |
6474 | /* If it's none of the above, it must be a literal filehandle | |
6475 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6476 | else { |
85e6fe83 | 6477 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6478 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6479 | yylval.ival = OP_NULL; |
6480 | } | |
6481 | } | |
02aa26ce | 6482 | |
79072805 LW |
6483 | return s; |
6484 | } | |
6485 | ||
02aa26ce NT |
6486 | |
6487 | /* scan_str | |
6488 | takes: start position in buffer | |
09bef843 SB |
6489 | keep_quoted preserve \ on the embedded delimiter(s) |
6490 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6491 | returns: position to continue reading from buffer |
6492 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6493 | updates the read buffer. | |
6494 | ||
6495 | This subroutine pulls a string out of the input. It is called for: | |
6496 | q single quotes q(literal text) | |
6497 | ' single quotes 'literal text' | |
6498 | qq double quotes qq(interpolate $here please) | |
6499 | " double quotes "interpolate $here please" | |
6500 | qx backticks qx(/bin/ls -l) | |
6501 | ` backticks `/bin/ls -l` | |
6502 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6503 | m// regexp match m/this/ | |
6504 | s/// regexp substitute s/this/that/ | |
6505 | tr/// string transliterate tr/this/that/ | |
6506 | y/// string transliterate y/this/that/ | |
6507 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6508 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6509 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6510 | ||
6511 | In most of these cases (all but <>, patterns and transliterate) | |
6512 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6513 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6514 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6515 | calls scan_str(). | |
6516 | ||
6517 | It skips whitespace before the string starts, and treats the first | |
6518 | character as the delimiter. If the delimiter is one of ([{< then | |
6519 | the corresponding "close" character )]}> is used as the closing | |
6520 | delimiter. It allows quoting of delimiters, and if the string has | |
6521 | balanced delimiters ([{<>}]) it allows nesting. | |
6522 | ||
6523 | The lexer always reads these strings into lex_stuff, except in the | |
6524 | case of the operators which take *two* arguments (s/// and tr///) | |
6525 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6526 | arg to s or tr) and if so puts the string into lex_repl. | |
6527 | ||
6528 | */ | |
6529 | ||
76e3520e | 6530 | STATIC char * |
09bef843 | 6531 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6532 | { |
11343788 | 6533 | dTHR; |
02aa26ce NT |
6534 | SV *sv; /* scalar value: string */ |
6535 | char *tmps; /* temp string, used for delimiter matching */ | |
6536 | register char *s = start; /* current position in the buffer */ | |
6537 | register char term; /* terminating character */ | |
6538 | register char *to; /* current position in the sv's data */ | |
6539 | I32 brackets = 1; /* bracket nesting level */ | |
b1c7b182 | 6540 | bool has_utf = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6541 | |
6542 | /* skip space before the delimiter */ | |
fb73857a | 6543 | if (isSPACE(*s)) |
6544 | s = skipspace(s); | |
02aa26ce NT |
6545 | |
6546 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6547 | CLINE; |
02aa26ce NT |
6548 | |
6549 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6550 | term = *s; |
b1c7b182 GS |
6551 | if ((term & 0x80) && UTF) |
6552 | has_utf = TRUE; | |
6553 | ||
02aa26ce | 6554 | /* mark where we are */ |
57843af0 | 6555 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6556 | PL_multi_open = term; |
02aa26ce NT |
6557 | |
6558 | /* find corresponding closing delimiter */ | |
93a17b20 | 6559 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6560 | term = tmps[5]; |
3280af22 | 6561 | PL_multi_close = term; |
79072805 | 6562 | |
02aa26ce | 6563 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6564 | assuming. 79 is the SV's initial length. What a random number. */ |
6565 | sv = NEWSV(87,79); | |
ed6116ce LW |
6566 | sv_upgrade(sv, SVt_PVIV); |
6567 | SvIVX(sv) = term; | |
a0d0e21e | 6568 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6569 | |
6570 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6571 | if (keep_delims) |
6572 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6573 | s++; |
6574 | for (;;) { | |
02aa26ce | 6575 | /* extend sv if need be */ |
3280af22 | 6576 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6577 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6578 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6579 | |
02aa26ce | 6580 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6581 | if (PL_multi_open == PL_multi_close) { |
6582 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6583 | /* embedded newlines increment the current line number */ |
3280af22 | 6584 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6585 | CopLINE_inc(PL_curcop); |
02aa26ce | 6586 | /* handle quoted delimiters */ |
3280af22 | 6587 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6588 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6589 | s++; |
02aa26ce | 6590 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6591 | else |
6592 | *to++ = *s++; | |
6593 | } | |
02aa26ce NT |
6594 | /* terminate when run out of buffer (the for() condition), or |
6595 | have found the terminator */ | |
93a17b20 LW |
6596 | else if (*s == term) |
6597 | break; | |
b1c7b182 GS |
6598 | else if (!has_utf && (*s & 0x80) && UTF) |
6599 | has_utf = TRUE; | |
93a17b20 LW |
6600 | *to = *s; |
6601 | } | |
6602 | } | |
02aa26ce NT |
6603 | |
6604 | /* if the terminator isn't the same as the start character (e.g., | |
6605 | matched brackets), we have to allow more in the quoting, and | |
6606 | be prepared for nested brackets. | |
6607 | */ | |
93a17b20 | 6608 | else { |
02aa26ce | 6609 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6610 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6611 | /* embedded newlines increment the line count */ |
3280af22 | 6612 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6613 | CopLINE_inc(PL_curcop); |
02aa26ce | 6614 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6615 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6616 | if (!keep_quoted && |
6617 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6618 | s++; |
6619 | else | |
6620 | *to++ = *s++; | |
6621 | } | |
02aa26ce | 6622 | /* allow nested opens and closes */ |
3280af22 | 6623 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6624 | break; |
3280af22 | 6625 | else if (*s == PL_multi_open) |
93a17b20 | 6626 | brackets++; |
b1c7b182 GS |
6627 | else if (!has_utf && (*s & 0x80) && UTF) |
6628 | has_utf = TRUE; | |
93a17b20 LW |
6629 | *to = *s; |
6630 | } | |
6631 | } | |
02aa26ce | 6632 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6633 | *to = '\0'; |
463ee0b2 | 6634 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6635 | |
02aa26ce NT |
6636 | /* |
6637 | * this next chunk reads more into the buffer if we're not done yet | |
6638 | */ | |
6639 | ||
b1c7b182 GS |
6640 | if (s < PL_bufend) |
6641 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6642 | |
6a27c188 | 6643 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6644 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6645 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6646 | (to[-2] == '\n' && to[-1] == '\r')) | |
6647 | { | |
f63a84b2 LW |
6648 | to[-2] = '\n'; |
6649 | to--; | |
6650 | SvCUR_set(sv, to - SvPVX(sv)); | |
6651 | } | |
6652 | else if (to[-1] == '\r') | |
6653 | to[-1] = '\n'; | |
6654 | } | |
6655 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6656 | to[-1] = '\n'; | |
6657 | #endif | |
6658 | ||
02aa26ce NT |
6659 | /* if we're out of file, or a read fails, bail and reset the current |
6660 | line marker so we can report where the unterminated string began | |
6661 | */ | |
3280af22 NIS |
6662 | if (!PL_rsfp || |
6663 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6664 | sv_free(sv); |
57843af0 | 6665 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6666 | return Nullch; |
6667 | } | |
02aa26ce | 6668 | /* we read a line, so increment our line counter */ |
57843af0 | 6669 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6670 | |
02aa26ce | 6671 | /* update debugger info */ |
3280af22 | 6672 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6673 | SV *sv = NEWSV(88,0); |
6674 | ||
93a17b20 | 6675 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6676 | sv_setsv(sv,PL_linestr); |
57843af0 | 6677 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6678 | } |
a0ed51b3 | 6679 | |
3280af22 NIS |
6680 | /* having changed the buffer, we must update PL_bufend */ |
6681 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6682 | } |
02aa26ce NT |
6683 | |
6684 | /* at this point, we have successfully read the delimited string */ | |
6685 | ||
09bef843 SB |
6686 | if (keep_delims) |
6687 | sv_catpvn(sv, s, 1); | |
b1c7b182 GS |
6688 | if (has_utf) |
6689 | SvUTF8_on(sv); | |
57843af0 | 6690 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6691 | s++; |
02aa26ce NT |
6692 | |
6693 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6694 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6695 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6696 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6697 | } |
02aa26ce NT |
6698 | |
6699 | /* decide whether this is the first or second quoted string we've read | |
6700 | for this op | |
6701 | */ | |
6702 | ||
3280af22 NIS |
6703 | if (PL_lex_stuff) |
6704 | PL_lex_repl = sv; | |
79072805 | 6705 | else |
3280af22 | 6706 | PL_lex_stuff = sv; |
378cc40b LW |
6707 | return s; |
6708 | } | |
6709 | ||
02aa26ce NT |
6710 | /* |
6711 | scan_num | |
6712 | takes: pointer to position in buffer | |
6713 | returns: pointer to new position in buffer | |
6714 | side-effects: builds ops for the constant in yylval.op | |
6715 | ||
6716 | Read a number in any of the formats that Perl accepts: | |
6717 | ||
4f19785b | 6718 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6719 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6720 | ||
6721 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6722 | underbars before a decimal point must be at three digit intervals. | |
6723 | ||
3280af22 | 6724 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6725 | thing it reads. |
6726 | ||
6727 | If it reads a number without a decimal point or an exponent, it will | |
6728 | try converting the number to an integer and see if it can do so | |
6729 | without loss of precision. | |
6730 | */ | |
6731 | ||
378cc40b | 6732 | char * |
864dbfa3 | 6733 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6734 | { |
02aa26ce NT |
6735 | register char *s = start; /* current position in buffer */ |
6736 | register char *d; /* destination in temp buffer */ | |
6737 | register char *e; /* end of temp buffer */ | |
86554af2 | 6738 | NV nv; /* number read, as a double */ |
a7cb1f99 | 6739 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6740 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6741 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6742 | static char number_too_long[] = "Number too long"; |
378cc40b | 6743 | |
02aa26ce NT |
6744 | /* We use the first character to decide what type of number this is */ |
6745 | ||
378cc40b | 6746 | switch (*s) { |
79072805 | 6747 | default: |
cea2e8a9 | 6748 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6749 | |
6750 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6751 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6752 | case '0': |
6753 | { | |
02aa26ce NT |
6754 | /* variables: |
6755 | u holds the "number so far" | |
4f19785b WSI |
6756 | shift the power of 2 of the base |
6757 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6758 | overflowed was the number more than we can hold? |
6759 | ||
6760 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6761 | we in octal/hex/binary?" indicator to disallow hex characters |
6762 | when in octal mode. | |
02aa26ce | 6763 | */ |
f248d071 | 6764 | dTHR; |
9e24b6e2 JH |
6765 | NV n = 0.0; |
6766 | UV u = 0; | |
79072805 | 6767 | I32 shift; |
9e24b6e2 JH |
6768 | bool overflowed = FALSE; |
6769 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6770 | static char* bases[5] = { "", "binary", "", "octal", | |
6771 | "hexadecimal" }; | |
6772 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6773 | "Hexadecimal" }; | |
6774 | static char *maxima[5] = { "", | |
6775 | "0b11111111111111111111111111111111", | |
6776 | "", | |
893fe2c2 | 6777 | "037777777777", |
9e24b6e2 JH |
6778 | "0xffffffff" }; |
6779 | char *base, *Base, *max; | |
378cc40b | 6780 | |
02aa26ce | 6781 | /* check for hex */ |
378cc40b LW |
6782 | if (s[1] == 'x') { |
6783 | shift = 4; | |
6784 | s += 2; | |
4f19785b WSI |
6785 | } else if (s[1] == 'b') { |
6786 | shift = 1; | |
6787 | s += 2; | |
378cc40b | 6788 | } |
02aa26ce | 6789 | /* check for a decimal in disguise */ |
b78218b7 | 6790 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6791 | goto decimal; |
02aa26ce | 6792 | /* so it must be octal */ |
378cc40b LW |
6793 | else |
6794 | shift = 3; | |
9e24b6e2 JH |
6795 | |
6796 | base = bases[shift]; | |
6797 | Base = Bases[shift]; | |
6798 | max = maxima[shift]; | |
02aa26ce | 6799 | |
4f19785b | 6800 | /* read the rest of the number */ |
378cc40b | 6801 | for (;;) { |
9e24b6e2 | 6802 | /* x is used in the overflow test, |
893fe2c2 | 6803 | b is the digit we're adding on. */ |
9e24b6e2 | 6804 | UV x, b; |
55497cff | 6805 | |
378cc40b | 6806 | switch (*s) { |
02aa26ce NT |
6807 | |
6808 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6809 | default: |
6810 | goto out; | |
02aa26ce NT |
6811 | |
6812 | /* _ are ignored */ | |
de3bb511 LW |
6813 | case '_': |
6814 | s++; | |
6815 | break; | |
02aa26ce NT |
6816 | |
6817 | /* 8 and 9 are not octal */ | |
378cc40b | 6818 | case '8': case '9': |
4f19785b | 6819 | if (shift == 3) |
cea2e8a9 | 6820 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6821 | /* FALL THROUGH */ |
02aa26ce NT |
6822 | |
6823 | /* octal digits */ | |
4f19785b | 6824 | case '2': case '3': case '4': |
378cc40b | 6825 | case '5': case '6': case '7': |
4f19785b | 6826 | if (shift == 1) |
cea2e8a9 | 6827 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6828 | /* FALL THROUGH */ |
6829 | ||
6830 | case '0': case '1': | |
02aa26ce | 6831 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6832 | goto digit; |
02aa26ce NT |
6833 | |
6834 | /* hex digits */ | |
378cc40b LW |
6835 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6836 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6837 | /* make sure they said 0x */ |
378cc40b LW |
6838 | if (shift != 4) |
6839 | goto out; | |
55497cff | 6840 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6841 | |
6842 | /* Prepare to put the digit we have onto the end | |
6843 | of the number so far. We check for overflows. | |
6844 | */ | |
6845 | ||
55497cff | 6846 | digit: |
9e24b6e2 JH |
6847 | if (!overflowed) { |
6848 | x = u << shift; /* make room for the digit */ | |
6849 | ||
6850 | if ((x >> shift) != u | |
6851 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6852 | dTHR; | |
6853 | overflowed = TRUE; | |
6854 | n = (NV) u; | |
767a6a26 PM |
6855 | if (ckWARN_d(WARN_OVERFLOW)) |
6856 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6857 | "Integer overflow in %s number", |
6858 | base); | |
6859 | } else | |
6860 | u = x | b; /* add the digit to the end */ | |
6861 | } | |
6862 | if (overflowed) { | |
6863 | n *= nvshift[shift]; | |
6864 | /* If an NV has not enough bits in its | |
6865 | * mantissa to represent an UV this summing of | |
6866 | * small low-order numbers is a waste of time | |
6867 | * (because the NV cannot preserve the | |
6868 | * low-order bits anyway): we could just | |
6869 | * remember when did we overflow and in the | |
6870 | * end just multiply n by the right | |
6871 | * amount. */ | |
6872 | n += (NV) b; | |
55497cff | 6873 | } |
378cc40b LW |
6874 | break; |
6875 | } | |
6876 | } | |
02aa26ce NT |
6877 | |
6878 | /* if we get here, we had success: make a scalar value from | |
6879 | the number. | |
6880 | */ | |
378cc40b | 6881 | out: |
79072805 | 6882 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6883 | if (overflowed) { |
6884 | dTHR; | |
767a6a26 PM |
6885 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6886 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6887 | "%s number > %s non-portable", |
6888 | Base, max); | |
6889 | sv_setnv(sv, n); | |
6890 | } | |
6891 | else { | |
15041a67 | 6892 | #if UVSIZE > 4 |
9e24b6e2 | 6893 | dTHR; |
767a6a26 PM |
6894 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6895 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6896 | "%s number > %s non-portable", |
6897 | Base, max); | |
2cc4c2dc | 6898 | #endif |
9e24b6e2 JH |
6899 | sv_setuv(sv, u); |
6900 | } | |
2cc4c2dc | 6901 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6902 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6903 | } |
6904 | break; | |
02aa26ce NT |
6905 | |
6906 | /* | |
6907 | handle decimal numbers. | |
6908 | we're also sent here when we read a 0 as the first digit | |
6909 | */ | |
378cc40b LW |
6910 | case '1': case '2': case '3': case '4': case '5': |
6911 | case '6': case '7': case '8': case '9': case '.': | |
6912 | decimal: | |
3280af22 NIS |
6913 | d = PL_tokenbuf; |
6914 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6915 | floatit = FALSE; |
02aa26ce NT |
6916 | |
6917 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6918 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6919 | /* skip underscores, checking for misplaced ones |
6920 | if -w is on | |
6921 | */ | |
93a17b20 | 6922 | if (*s == '_') { |
d008e5eb | 6923 | dTHR; /* only for ckWARN */ |
599cee73 | 6924 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6925 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6926 | lastub = ++s; |
6927 | } | |
fc36a67e | 6928 | else { |
02aa26ce | 6929 | /* check for end of fixed-length buffer */ |
fc36a67e | 6930 | if (d >= e) |
cea2e8a9 | 6931 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6932 | /* if we're ok, copy the character */ |
378cc40b | 6933 | *d++ = *s++; |
fc36a67e | 6934 | } |
378cc40b | 6935 | } |
02aa26ce NT |
6936 | |
6937 | /* final misplaced underbar check */ | |
d008e5eb GS |
6938 | if (lastub && s - lastub != 3) { |
6939 | dTHR; | |
6940 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6941 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6942 | } |
02aa26ce NT |
6943 | |
6944 | /* read a decimal portion if there is one. avoid | |
6945 | 3..5 being interpreted as the number 3. followed | |
6946 | by .5 | |
6947 | */ | |
2f3197b3 | 6948 | if (*s == '.' && s[1] != '.') { |
79072805 | 6949 | floatit = TRUE; |
378cc40b | 6950 | *d++ = *s++; |
02aa26ce NT |
6951 | |
6952 | /* copy, ignoring underbars, until we run out of | |
6953 | digits. Note: no misplaced underbar checks! | |
6954 | */ | |
fc36a67e | 6955 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6956 | /* fixed length buffer check */ |
fc36a67e | 6957 | if (d >= e) |
cea2e8a9 | 6958 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6959 | if (*s != '_') |
6960 | *d++ = *s; | |
378cc40b | 6961 | } |
dd629d5b GS |
6962 | if (*s == '.' && isDIGIT(s[1])) { |
6963 | /* oops, it's really a v-string, but without the "v" */ | |
6964 | s = start - 1; | |
6965 | goto vstring; | |
6966 | } | |
378cc40b | 6967 | } |
02aa26ce NT |
6968 | |
6969 | /* read exponent part, if present */ | |
93a17b20 | 6970 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6971 | floatit = TRUE; |
6972 | s++; | |
02aa26ce NT |
6973 | |
6974 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6975 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6976 | |
6977 | /* allow positive or negative exponent */ | |
378cc40b LW |
6978 | if (*s == '+' || *s == '-') |
6979 | *d++ = *s++; | |
02aa26ce NT |
6980 | |
6981 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6982 | while (isDIGIT(*s)) { |
6983 | if (d >= e) | |
cea2e8a9 | 6984 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6985 | *d++ = *s++; |
fc36a67e | 6986 | } |
378cc40b | 6987 | } |
02aa26ce NT |
6988 | |
6989 | /* terminate the string */ | |
378cc40b | 6990 | *d = '\0'; |
02aa26ce NT |
6991 | |
6992 | /* make an sv from the string */ | |
79072805 | 6993 | sv = NEWSV(92,0); |
097ee67d | 6994 | |
86554af2 | 6995 | #if defined(Strtol) && defined(Strtoul) |
0b7fceb9 MU |
6996 | |
6997 | /* | |
0b7fceb9 MU |
6998 | strtol/strtoll sets errno to ERANGE if the number is too big |
6999 | for an integer. We try to do an integer conversion first | |
7000 | if no characters indicating "float" have been found. | |
7001 | */ | |
7002 | ||
7003 | if (!floatit) { | |
0b7fceb9 MU |
7004 | IV iv; |
7005 | UV uv; | |
7006 | errno = 0; | |
c239479b | 7007 | if (*PL_tokenbuf == '-') |
96989be3 | 7008 | iv = Strtol(PL_tokenbuf, (char**)NULL, 10); |
c239479b | 7009 | else |
96989be3 | 7010 | uv = Strtoul(PL_tokenbuf, (char**)NULL, 10); |
55eb892c | 7011 | if (errno) |
86554af2 | 7012 | floatit = TRUE; /* Probably just too large. */ |
0b7fceb9 MU |
7013 | else if (*PL_tokenbuf == '-') |
7014 | sv_setiv(sv, iv); | |
86554af2 JH |
7015 | else if (uv <= IV_MAX) |
7016 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ | |
0b7fceb9 | 7017 | else |
c239479b | 7018 | sv_setuv(sv, uv); |
0b7fceb9 MU |
7019 | } |
7020 | if (floatit) { | |
86554af2 JH |
7021 | nv = Atof(PL_tokenbuf); |
7022 | sv_setnv(sv, nv); | |
7023 | } | |
7024 | #else | |
7025 | /* | |
7026 | No working strtou?ll?. | |
7027 | ||
7028 | Unfortunately atol() doesn't do range checks (returning | |
7029 | LONG_MIN/LONG_MAX, and setting errno to ERANGE on overflows) | |
7030 | everywhere [1], so we cannot use use atol() (or atoll()). | |
7031 | If we could, they would be used, as Atol(), very much like | |
7032 | Strtol() and Strtoul() are used above. | |
7033 | ||
7034 | [1] XXX Configure test needed to check for atol() | |
d6c14000 JH |
7035 | (and atoll()) overflow behaviour XXX |
7036 | ||
7037 | --jhi | |
86554af2 JH |
7038 | |
7039 | We need to do this the hard way. */ | |
7040 | ||
7041 | nv = Atof(PL_tokenbuf); | |
7042 | ||
7043 | /* See if we can make do with an integer value without loss of | |
7044 | precision. We use U_V to cast to a UV, because some | |
7045 | compilers have issues. Then we try casting it back and see | |
7046 | if it was the same [1]. We only do this if we know we | |
7047 | specifically read an integer. If floatit is true, then we | |
7048 | don't need to do the conversion at all. | |
7049 | ||
7050 | [1] Note that this is lossy if our NVs cannot preserve our | |
d6c14000 JH |
7051 | UVs. There are metaconfig defines NV_PRESERVES_UV (a boolean) |
7052 | and NV_PRESERVES_UV_BITS (a number), but in general we really | |
7053 | do hope all such potentially lossy platforms have strtou?ll? | |
7054 | to do a lossless IV/UV conversion. | |
7055 | ||
7056 | Maybe could do some tricks with DBL_DIG, LDBL_DIG and | |
7057 | DBL_MANT_DIG and LDBL_MANT_DIG (these are already available | |
7058 | as NV_DIG and NV_MANT_DIG)? | |
7059 | ||
7060 | --jhi | |
86554af2 JH |
7061 | */ |
7062 | { | |
7063 | UV uv = U_V(nv); | |
7064 | if (!floatit && (NV)uv == nv) { | |
7065 | if (uv <= IV_MAX) | |
7066 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ | |
7067 | else | |
7068 | sv_setuv(sv, uv); | |
7069 | } | |
7070 | else | |
7071 | sv_setnv(sv, nv); | |
96989be3 | 7072 | } |
0b7fceb9 | 7073 | #endif |
b8403495 JH |
7074 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7075 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 7076 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7077 | (floatit ? "float" : "integer"), |
7078 | sv, Nullsv, NULL); | |
378cc40b | 7079 | break; |
0b7fceb9 | 7080 | |
e312add1 | 7081 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7082 | case 'v': |
dd629d5b | 7083 | vstring: |
a7cb1f99 | 7084 | { |
a7cb1f99 GS |
7085 | char *pos = s; |
7086 | pos++; | |
dd629d5b | 7087 | while (isDIGIT(*pos) || *pos == '_') |
a7cb1f99 | 7088 | pos++; |
e526c9e6 | 7089 | if (!isALPHA(*pos)) { |
f83ee824 | 7090 | UV rev; |
560a288e | 7091 | U8 tmpbuf[UTF8_MAXLEN]; |
a7cb1f99 | 7092 | U8 *tmpend; |
3818b22b | 7093 | bool utf8 = FALSE; |
a7cb1f99 GS |
7094 | s++; /* get past 'v' */ |
7095 | ||
7096 | sv = NEWSV(92,5); | |
a7cb1f99 GS |
7097 | sv_setpvn(sv, "", 0); |
7098 | ||
e526c9e6 | 7099 | for (;;) { |
3cb0bbe5 GS |
7100 | if (*s == '0' && isDIGIT(s[1])) |
7101 | yyerror("Octal number in vector unsupported"); | |
dd629d5b GS |
7102 | rev = 0; |
7103 | { | |
7104 | /* this is atoi() that tolerates underscores */ | |
7105 | char *end = pos; | |
7106 | UV mult = 1; | |
7107 | while (--end >= s) { | |
7108 | UV orev; | |
7109 | if (*end == '_') | |
7110 | continue; | |
7111 | orev = rev; | |
7112 | rev += (*end - '0') * mult; | |
7113 | mult *= 10; | |
7114 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
7115 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
7116 | "Integer overflow in decimal number"); | |
7117 | } | |
7118 | } | |
e526c9e6 GS |
7119 | tmpend = uv_to_utf8(tmpbuf, rev); |
7120 | utf8 = utf8 || rev > 127; | |
7121 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
7122 | if (*pos == '.' && isDIGIT(pos[1])) | |
7123 | s = ++pos; | |
3818b22b | 7124 | else { |
e526c9e6 GS |
7125 | s = pos; |
7126 | break; | |
3818b22b | 7127 | } |
dd629d5b | 7128 | while (isDIGIT(*pos) || *pos == '_') |
e526c9e6 GS |
7129 | pos++; |
7130 | } | |
a7cb1f99 GS |
7131 | |
7132 | SvPOK_on(sv); | |
a7cb1f99 | 7133 | SvREADONLY_on(sv); |
560a288e | 7134 | if (utf8) { |
3818b22b | 7135 | SvUTF8_on(sv); |
560a288e GS |
7136 | sv_utf8_downgrade(sv, TRUE); |
7137 | } | |
a7cb1f99 GS |
7138 | } |
7139 | } | |
7140 | break; | |
79072805 | 7141 | } |
a687059c | 7142 | |
02aa26ce NT |
7143 | /* make the op for the constant and return */ |
7144 | ||
a7cb1f99 GS |
7145 | if (sv) |
7146 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
7147 | else | |
7148 | yylval.opval = Nullop; | |
a687059c | 7149 | |
378cc40b LW |
7150 | return s; |
7151 | } | |
7152 | ||
76e3520e | 7153 | STATIC char * |
cea2e8a9 | 7154 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7155 | { |
11343788 | 7156 | dTHR; |
79072805 | 7157 | register char *eol; |
378cc40b | 7158 | register char *t; |
79cb57f6 | 7159 | SV *stuff = newSVpvn("",0); |
79072805 | 7160 | bool needargs = FALSE; |
378cc40b | 7161 | |
79072805 | 7162 | while (!needargs) { |
85e6fe83 | 7163 | if (*s == '.' || *s == '}') { |
79072805 | 7164 | /*SUPPRESS 530*/ |
51882d45 | 7165 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7166 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7167 | #else |
bf4acbe4 | 7168 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7169 | #endif |
6a65c6a0 | 7170 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7171 | break; |
7172 | } | |
3280af22 | 7173 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7174 | eol = strchr(s,'\n'); |
0f85fab0 | 7175 | if (!eol++) |
3280af22 | 7176 | eol = PL_bufend; |
0f85fab0 LW |
7177 | } |
7178 | else | |
3280af22 | 7179 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7180 | if (*s != '#') { |
a0d0e21e LW |
7181 | for (t = s; t < eol; t++) { |
7182 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7183 | needargs = FALSE; | |
7184 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7185 | } |
a0d0e21e LW |
7186 | if (*t == '@' || *t == '^') |
7187 | needargs = TRUE; | |
378cc40b | 7188 | } |
a0d0e21e | 7189 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
7190 | #ifndef PERL_STRICT_CR |
7191 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
7192 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7193 | end[-2] = '\n'; | |
7194 | end[-1] = '\0'; | |
7195 | SvCUR(stuff)--; | |
7196 | } | |
7197 | #endif | |
79072805 LW |
7198 | } |
7199 | s = eol; | |
3280af22 NIS |
7200 | if (PL_rsfp) { |
7201 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7202 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7203 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 7204 | if (!s) { |
3280af22 | 7205 | s = PL_bufptr; |
79072805 | 7206 | yyerror("Format not terminated"); |
378cc40b LW |
7207 | break; |
7208 | } | |
378cc40b | 7209 | } |
463ee0b2 | 7210 | incline(s); |
79072805 | 7211 | } |
a0d0e21e LW |
7212 | enough: |
7213 | if (SvCUR(stuff)) { | |
3280af22 | 7214 | PL_expect = XTERM; |
79072805 | 7215 | if (needargs) { |
3280af22 NIS |
7216 | PL_lex_state = LEX_NORMAL; |
7217 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7218 | force_next(','); |
7219 | } | |
a0d0e21e | 7220 | else |
3280af22 NIS |
7221 | PL_lex_state = LEX_FORMLINE; |
7222 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7223 | force_next(THING); |
3280af22 | 7224 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7225 | force_next(LSTOP); |
378cc40b | 7226 | } |
79072805 | 7227 | else { |
8990e307 | 7228 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7229 | PL_lex_formbrack = 0; |
7230 | PL_bufptr = s; | |
79072805 LW |
7231 | } |
7232 | return s; | |
378cc40b | 7233 | } |
a687059c | 7234 | |
76e3520e | 7235 | STATIC void |
cea2e8a9 | 7236 | S_set_csh(pTHX) |
a687059c | 7237 | { |
ae986130 | 7238 | #ifdef CSH |
3280af22 NIS |
7239 | if (!PL_cshlen) |
7240 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7241 | #endif |
a687059c | 7242 | } |
463ee0b2 | 7243 | |
ba6d6ac9 | 7244 | I32 |
864dbfa3 | 7245 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7246 | { |
11343788 | 7247 | dTHR; |
3280af22 NIS |
7248 | I32 oldsavestack_ix = PL_savestack_ix; |
7249 | CV* outsidecv = PL_compcv; | |
748a9306 | 7250 | AV* comppadlist; |
8990e307 | 7251 | |
3280af22 NIS |
7252 | if (PL_compcv) { |
7253 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7254 | } |
7766f137 | 7255 | SAVEI32(PL_subline); |
3280af22 NIS |
7256 | save_item(PL_subname); |
7257 | SAVEI32(PL_padix); | |
354992b1 | 7258 | SAVECOMPPAD(); |
3280af22 NIS |
7259 | SAVESPTR(PL_comppad_name); |
7260 | SAVESPTR(PL_compcv); | |
7261 | SAVEI32(PL_comppad_name_fill); | |
7262 | SAVEI32(PL_min_intro_pending); | |
7263 | SAVEI32(PL_max_intro_pending); | |
7264 | SAVEI32(PL_pad_reset_pending); | |
7265 | ||
7266 | PL_compcv = (CV*)NEWSV(1104,0); | |
7267 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7268 | CvFLAGS(PL_compcv) |= flags; | |
7269 | ||
7270 | PL_comppad = newAV(); | |
7271 | av_push(PL_comppad, Nullsv); | |
7272 | PL_curpad = AvARRAY(PL_comppad); | |
7273 | PL_comppad_name = newAV(); | |
7274 | PL_comppad_name_fill = 0; | |
7275 | PL_min_intro_pending = 0; | |
7276 | PL_padix = 0; | |
57843af0 | 7277 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7278 | #ifdef USE_THREADS |
79cb57f6 | 7279 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7280 | PL_curpad[0] = (SV*)newAV(); |
7281 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7282 | #endif /* USE_THREADS */ |
748a9306 LW |
7283 | |
7284 | comppadlist = newAV(); | |
7285 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7286 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7287 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7288 | |
3280af22 NIS |
7289 | CvPADLIST(PL_compcv) = comppadlist; |
7290 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7291 | #ifdef USE_THREADS |
533c011a NIS |
7292 | CvOWNER(PL_compcv) = 0; |
7293 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7294 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7295 | #endif /* USE_THREADS */ |
748a9306 | 7296 | |
8990e307 LW |
7297 | return oldsavestack_ix; |
7298 | } | |
7299 | ||
7300 | int | |
864dbfa3 | 7301 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7302 | { |
11343788 | 7303 | dTHR; |
faef0170 | 7304 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7305 | yyerror(s); |
faef0170 | 7306 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7307 | return 0; |
8990e307 LW |
7308 | } |
7309 | ||
7310 | int | |
864dbfa3 | 7311 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7312 | { |
11343788 | 7313 | dTHR; |
68dc0745 | 7314 | char *where = NULL; |
7315 | char *context = NULL; | |
7316 | int contlen = -1; | |
46fc3d4c | 7317 | SV *msg; |
463ee0b2 | 7318 | |
3280af22 | 7319 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7320 | where = "at EOF"; |
3280af22 NIS |
7321 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7322 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7323 | while (isSPACE(*PL_oldoldbufptr)) | |
7324 | PL_oldoldbufptr++; | |
7325 | context = PL_oldoldbufptr; | |
7326 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7327 | } |
3280af22 NIS |
7328 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7329 | PL_oldbufptr != PL_bufptr) { | |
7330 | while (isSPACE(*PL_oldbufptr)) | |
7331 | PL_oldbufptr++; | |
7332 | context = PL_oldbufptr; | |
7333 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7334 | } |
7335 | else if (yychar > 255) | |
68dc0745 | 7336 | where = "next token ???"; |
cdfb297e GS |
7337 | #ifdef USE_PURE_BISON |
7338 | /* GNU Bison sets the value -2 */ | |
7339 | else if (yychar == -2) { | |
7340 | #else | |
463ee0b2 | 7341 | else if ((yychar & 127) == 127) { |
cdfb297e | 7342 | #endif |
3280af22 NIS |
7343 | if (PL_lex_state == LEX_NORMAL || |
7344 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7345 | where = "at end of line"; |
3280af22 | 7346 | else if (PL_lex_inpat) |
68dc0745 | 7347 | where = "within pattern"; |
463ee0b2 | 7348 | else |
68dc0745 | 7349 | where = "within string"; |
463ee0b2 | 7350 | } |
46fc3d4c | 7351 | else { |
79cb57f6 | 7352 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7353 | if (yychar < 32) |
cea2e8a9 | 7354 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7355 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7356 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7357 | else |
cea2e8a9 | 7358 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7359 | where = SvPVX(where_sv); |
463ee0b2 | 7360 | } |
46fc3d4c | 7361 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7362 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7363 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7364 | if (context) |
cea2e8a9 | 7365 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7366 | else |
cea2e8a9 | 7367 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7368 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7369 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7370 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7371 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7372 | PL_multi_end = 0; |
a0d0e21e | 7373 | } |
faef0170 | 7374 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7375 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7376 | else |
5a844595 | 7377 | qerror(msg); |
c7d6bfb2 GS |
7378 | if (PL_error_count >= 10) { |
7379 | if (PL_in_eval && SvCUR(ERRSV)) | |
7380 | Perl_croak(aTHX_ "%_%s has too many errors.\n", | |
7381 | ERRSV, CopFILE(PL_curcop)); | |
7382 | else | |
7383 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
7384 | CopFILE(PL_curcop)); | |
7385 | } | |
3280af22 NIS |
7386 | PL_in_my = 0; |
7387 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7388 | return 0; |
7389 | } | |
4e35701f | 7390 | |
161b471a | 7391 | |
51371543 | 7392 | #ifdef PERL_OBJECT |
51371543 GS |
7393 | #include "XSUB.h" |
7394 | #endif | |
7395 | ||
ffb4593c NT |
7396 | /* |
7397 | * restore_rsfp | |
7398 | * Restore a source filter. | |
7399 | */ | |
7400 | ||
51371543 GS |
7401 | static void |
7402 | restore_rsfp(pTHXo_ void *f) | |
7403 | { | |
7404 | PerlIO *fp = (PerlIO*)f; | |
7405 | ||
7406 | if (PL_rsfp == PerlIO_stdin()) | |
7407 | PerlIO_clearerr(PL_rsfp); | |
7408 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7409 | PerlIO_close(PL_rsfp); | |
7410 | PL_rsfp = fp; | |
7411 | } |