Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
9cbb5ea2 GS |
14 | /* |
15 | * This file is the lexer for Perl. It's closely linked to the | |
ffb4593c NT |
16 | * parser, perly.y. |
17 | * | |
18 | * The main routine is yylex(), which returns the next token. | |
19 | */ | |
20 | ||
378cc40b | 21 | #include "EXTERN.h" |
864dbfa3 | 22 | #define PERL_IN_TOKE_C |
378cc40b | 23 | #include "perl.h" |
378cc40b | 24 | |
d3b6f988 GS |
25 | #define yychar PL_yychar |
26 | #define yylval PL_yylval | |
27 | ||
fc36a67e | 28 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 29 | |
51371543 GS |
30 | static void restore_rsfp(pTHXo_ void *f); |
31 | static void restore_expect(pTHXo_ void *e); | |
32 | static void restore_lex_expect(pTHXo_ void *e); | |
33 | ||
a0ed51b3 | 34 | #define UTF (PL_hints & HINT_UTF8) |
834a4ddd LW |
35 | /* |
36 | * Note: we try to be careful never to call the isXXX_utf8() functions | |
37 | * unless we're pretty sure we've seen the beginning of a UTF-8 character | |
38 | * (that is, the two high bits are set). Otherwise we risk loading in the | |
39 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. | |
40 | */ | |
41 | #define isIDFIRST_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
42 | ? isIDFIRST(*(p)) \ | |
43 | : isIDFIRST_utf8((U8*)p)) | |
44 | #define isALNUM_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
45 | ? isALNUM(*(p)) \ | |
46 | : isALNUM_utf8((U8*)p)) | |
a0ed51b3 | 47 | |
2b92dfce GS |
48 | /* In variables name $^X, these are the legal values for X. |
49 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
50 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
51 | ||
ffb4593c NT |
52 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
53 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
54 | * can get by with a single comparison (if the compiler is smart enough). |
55 | */ | |
56 | ||
fb73857a | 57 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
58 | ||
55497cff | 59 | #define LEX_NORMAL 10 |
60 | #define LEX_INTERPNORMAL 9 | |
61 | #define LEX_INTERPCASEMOD 8 | |
62 | #define LEX_INTERPPUSH 7 | |
63 | #define LEX_INTERPSTART 6 | |
64 | #define LEX_INTERPEND 5 | |
65 | #define LEX_INTERPENDMAYBE 4 | |
66 | #define LEX_INTERPCONCAT 3 | |
67 | #define LEX_INTERPCONST 2 | |
68 | #define LEX_FORMLINE 1 | |
69 | #define LEX_KNOWNEXT 0 | |
79072805 | 70 | |
395c3793 LW |
71 | #ifdef I_FCNTL |
72 | #include <fcntl.h> | |
73 | #endif | |
fe14fcc3 LW |
74 | #ifdef I_SYS_FILE |
75 | #include <sys/file.h> | |
76 | #endif | |
395c3793 | 77 | |
a790bc05 | 78 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
79 | #ifdef I_UNISTD | |
80 | # include <unistd.h> /* Needed for execv() */ | |
81 | #endif | |
82 | ||
83 | ||
79072805 LW |
84 | #ifdef ff_next |
85 | #undef ff_next | |
d48672a2 LW |
86 | #endif |
87 | ||
a1a0e61e TD |
88 | #ifdef USE_PURE_BISON |
89 | YYSTYPE* yylval_pointer = NULL; | |
90 | int* yychar_pointer = NULL; | |
22c35a8c GS |
91 | # undef yylval |
92 | # undef yychar | |
e4bfbdd4 JH |
93 | # define yylval (*yylval_pointer) |
94 | # define yychar (*yychar_pointer) | |
95 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
96 | # undef yylex |
97 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
98 | #endif |
99 | ||
79072805 | 100 | #include "keywords.h" |
fe14fcc3 | 101 | |
ffb4593c NT |
102 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
103 | ||
ae986130 LW |
104 | #ifdef CLINE |
105 | #undef CLINE | |
106 | #endif | |
3280af22 NIS |
107 | #define CLINE (PL_copline = (PL_curcop->cop_line < PL_copline ? PL_curcop->cop_line : PL_copline)) |
108 | ||
ffb4593c NT |
109 | /* |
110 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 111 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
112 | * |
113 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
114 | * OPERATOR : generic operator | |
115 | * AOPERATOR : assignment operator | |
116 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
117 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
118 | * PREREF : *EXPR where EXPR is not a simple identifier | |
119 | * TERM : expression term | |
120 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
121 | * FTST : file test operator | |
122 | * FUN0 : zero-argument function | |
123 | * FUN1 : not used | |
124 | * BOop : bitwise or or xor | |
125 | * BAop : bitwise and | |
126 | * SHop : shift operator | |
127 | * PWop : power operator | |
9cbb5ea2 | 128 | * PMop : pattern-matching operator |
ffb4593c NT |
129 | * Aop : addition-level operator |
130 | * Mop : multiplication-level operator | |
131 | * Eop : equality-testing operator | |
132 | * Rop : relational operator <= != gt | |
133 | * | |
134 | * Also see LOP and lop() below. | |
135 | */ | |
136 | ||
3280af22 NIS |
137 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
138 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
139 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
140 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
141 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
142 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
143 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
144 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
145 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
146 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
147 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
148 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
149 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
150 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
151 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
152 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
153 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
154 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
155 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
156 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 157 | |
a687059c LW |
158 | /* This bit of chicanery makes a unary function followed by |
159 | * a parenthesis into a function with one argument, highest precedence. | |
160 | */ | |
2f3197b3 | 161 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
162 | PL_expect = XTERM, \ |
163 | PL_bufptr = s, \ | |
164 | PL_last_uni = PL_oldbufptr, \ | |
165 | PL_last_lop_op = f, \ | |
a687059c LW |
166 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
167 | ||
79072805 | 168 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
169 | PL_bufptr = s, \ |
170 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
171 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
172 | ||
9f68db38 | 173 | /* grandfather return to old style */ |
3280af22 | 174 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 175 | |
ffb4593c NT |
176 | /* |
177 | * S_ao | |
178 | * | |
179 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
180 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
181 | */ | |
182 | ||
76e3520e | 183 | STATIC int |
cea2e8a9 | 184 | S_ao(pTHX_ int toketype) |
a0d0e21e | 185 | { |
3280af22 NIS |
186 | if (*PL_bufptr == '=') { |
187 | PL_bufptr++; | |
a0d0e21e LW |
188 | if (toketype == ANDAND) |
189 | yylval.ival = OP_ANDASSIGN; | |
190 | else if (toketype == OROR) | |
191 | yylval.ival = OP_ORASSIGN; | |
192 | toketype = ASSIGNOP; | |
193 | } | |
194 | return toketype; | |
195 | } | |
196 | ||
ffb4593c NT |
197 | /* |
198 | * S_no_op | |
199 | * When Perl expects an operator and finds something else, no_op | |
200 | * prints the warning. It always prints "<something> found where | |
201 | * operator expected. It prints "Missing semicolon on previous line?" | |
202 | * if the surprise occurs at the start of the line. "do you need to | |
203 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
204 | * where the compiler doesn't know if foo is a method call or a function. | |
205 | * It prints "Missing operator before end of line" if there's nothing | |
206 | * after the missing operator, or "... before <...>" if there is something | |
207 | * after the missing operator. | |
208 | */ | |
209 | ||
76e3520e | 210 | STATIC void |
cea2e8a9 | 211 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 212 | { |
3280af22 NIS |
213 | char *oldbp = PL_bufptr; |
214 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 215 | |
376b8730 | 216 | assert(s >= oldbp); |
3280af22 | 217 | PL_bufptr = s; |
cea2e8a9 | 218 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 219 | if (is_first) |
cea2e8a9 | 220 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
834a4ddd | 221 | else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) { |
748a9306 | 222 | char *t; |
834a4ddd | 223 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ; |
3280af22 | 224 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 225 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 226 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
227 | } |
228 | else | |
cea2e8a9 | 229 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 230 | PL_bufptr = oldbp; |
8990e307 LW |
231 | } |
232 | ||
ffb4593c NT |
233 | /* |
234 | * S_missingterm | |
235 | * Complain about missing quote/regexp/heredoc terminator. | |
236 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
237 | * If we're in a delimited string and the delimiter is a control | |
238 | * character, it's reformatted into a two-char sequence like ^C. | |
239 | * This is fatal. | |
240 | */ | |
241 | ||
76e3520e | 242 | STATIC void |
cea2e8a9 | 243 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
244 | { |
245 | char tmpbuf[3]; | |
246 | char q; | |
247 | if (s) { | |
248 | char *nl = strrchr(s,'\n'); | |
d2719217 | 249 | if (nl) |
8990e307 LW |
250 | *nl = '\0'; |
251 | } | |
9d116dd7 JH |
252 | else if ( |
253 | #ifdef EBCDIC | |
254 | iscntrl(PL_multi_close) | |
255 | #else | |
256 | PL_multi_close < 32 || PL_multi_close == 127 | |
257 | #endif | |
258 | ) { | |
8990e307 | 259 | *tmpbuf = '^'; |
3280af22 | 260 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
261 | s = "\\n"; |
262 | tmpbuf[2] = '\0'; | |
263 | s = tmpbuf; | |
264 | } | |
265 | else { | |
3280af22 | 266 | *tmpbuf = PL_multi_close; |
8990e307 LW |
267 | tmpbuf[1] = '\0'; |
268 | s = tmpbuf; | |
269 | } | |
270 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 271 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 272 | } |
79072805 | 273 | |
ffb4593c NT |
274 | /* |
275 | * Perl_deprecate | |
ffb4593c NT |
276 | */ |
277 | ||
79072805 | 278 | void |
864dbfa3 | 279 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 280 | { |
d008e5eb | 281 | dTHR; |
599cee73 | 282 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 283 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
284 | } |
285 | ||
ffb4593c NT |
286 | /* |
287 | * depcom | |
9cbb5ea2 | 288 | * Deprecate a comma-less variable list. |
ffb4593c NT |
289 | */ |
290 | ||
76e3520e | 291 | STATIC void |
cea2e8a9 | 292 | S_depcom(pTHX) |
a0d0e21e LW |
293 | { |
294 | deprecate("comma-less variable list"); | |
295 | } | |
296 | ||
ffb4593c | 297 | /* |
9cbb5ea2 GS |
298 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
299 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
300 | */ |
301 | ||
a868473f NIS |
302 | #ifdef WIN32 |
303 | ||
76e3520e | 304 | STATIC I32 |
cea2e8a9 | 305 | S_win32_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f NIS |
306 | { |
307 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
308 | if (count > 0 && !maxlen) | |
309 | win32_strip_return(sv); | |
310 | return count; | |
311 | } | |
312 | #endif | |
313 | ||
a0ed51b3 | 314 | STATIC I32 |
cea2e8a9 | 315 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
316 | { |
317 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
318 | if (count) { | |
dfe13c55 GS |
319 | U8* tmps; |
320 | U8* tend; | |
321 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 322 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 323 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
324 | |
325 | } | |
326 | return count; | |
327 | } | |
328 | ||
329 | STATIC I32 | |
cea2e8a9 | 330 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
331 | { |
332 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
333 | if (count) { | |
dfe13c55 GS |
334 | U8* tmps; |
335 | U8* tend; | |
336 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 337 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 338 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
339 | |
340 | } | |
341 | return count; | |
342 | } | |
a868473f | 343 | |
ffb4593c NT |
344 | /* |
345 | * Perl_lex_start | |
9cbb5ea2 GS |
346 | * Initialize variables. Uses the Perl save_stack to save its state (for |
347 | * recursive calls to the parser). | |
ffb4593c NT |
348 | */ |
349 | ||
a0d0e21e | 350 | void |
864dbfa3 | 351 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 352 | { |
0f15f207 | 353 | dTHR; |
8990e307 LW |
354 | char *s; |
355 | STRLEN len; | |
356 | ||
3280af22 NIS |
357 | SAVEI32(PL_lex_dojoin); |
358 | SAVEI32(PL_lex_brackets); | |
359 | SAVEI32(PL_lex_fakebrack); | |
360 | SAVEI32(PL_lex_casemods); | |
361 | SAVEI32(PL_lex_starts); | |
362 | SAVEI32(PL_lex_state); | |
363 | SAVESPTR(PL_lex_inpat); | |
364 | SAVEI32(PL_lex_inwhat); | |
365 | SAVEI16(PL_curcop->cop_line); | |
366 | SAVEPPTR(PL_bufptr); | |
367 | SAVEPPTR(PL_bufend); | |
368 | SAVEPPTR(PL_oldbufptr); | |
369 | SAVEPPTR(PL_oldoldbufptr); | |
370 | SAVEPPTR(PL_linestart); | |
371 | SAVESPTR(PL_linestr); | |
372 | SAVEPPTR(PL_lex_brackstack); | |
373 | SAVEPPTR(PL_lex_casestack); | |
51371543 | 374 | SAVEDESTRUCTOR(restore_rsfp, PL_rsfp); |
3280af22 NIS |
375 | SAVESPTR(PL_lex_stuff); |
376 | SAVEI32(PL_lex_defer); | |
09bef843 | 377 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 378 | SAVESPTR(PL_lex_repl); |
51371543 GS |
379 | SAVEDESTRUCTOR(restore_expect, PL_tokenbuf + PL_expect); /* encode as pointer */ |
380 | SAVEDESTRUCTOR(restore_lex_expect, PL_tokenbuf + PL_expect); | |
3280af22 NIS |
381 | |
382 | PL_lex_state = LEX_NORMAL; | |
383 | PL_lex_defer = 0; | |
384 | PL_expect = XSTATE; | |
385 | PL_lex_brackets = 0; | |
386 | PL_lex_fakebrack = 0; | |
387 | New(899, PL_lex_brackstack, 120, char); | |
388 | New(899, PL_lex_casestack, 12, char); | |
389 | SAVEFREEPV(PL_lex_brackstack); | |
390 | SAVEFREEPV(PL_lex_casestack); | |
391 | PL_lex_casemods = 0; | |
392 | *PL_lex_casestack = '\0'; | |
393 | PL_lex_dojoin = 0; | |
394 | PL_lex_starts = 0; | |
395 | PL_lex_stuff = Nullsv; | |
396 | PL_lex_repl = Nullsv; | |
397 | PL_lex_inpat = 0; | |
398 | PL_lex_inwhat = 0; | |
09bef843 | 399 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
400 | PL_linestr = line; |
401 | if (SvREADONLY(PL_linestr)) | |
402 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
403 | s = SvPV(PL_linestr, len); | |
8990e307 | 404 | if (len && s[len-1] != ';') { |
3280af22 NIS |
405 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
406 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
407 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 408 | } |
3280af22 NIS |
409 | SvTEMP_off(PL_linestr); |
410 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
411 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
412 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 413 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 414 | PL_rsfp = 0; |
79072805 | 415 | } |
a687059c | 416 | |
ffb4593c NT |
417 | /* |
418 | * Perl_lex_end | |
9cbb5ea2 GS |
419 | * Finalizer for lexing operations. Must be called when the parser is |
420 | * done with the lexer. | |
ffb4593c NT |
421 | */ |
422 | ||
463ee0b2 | 423 | void |
864dbfa3 | 424 | Perl_lex_end(pTHX) |
463ee0b2 | 425 | { |
3280af22 | 426 | PL_doextract = FALSE; |
463ee0b2 LW |
427 | } |
428 | ||
ffb4593c NT |
429 | /* |
430 | * S_incline | |
431 | * This subroutine has nothing to do with tilting, whether at windmills | |
432 | * or pinball tables. Its name is short for "increment line". It | |
433 | * increments the current line number in PL_curcop->cop_line and checks | |
434 | * to see whether the line starts with a comment of the form | |
9cbb5ea2 GS |
435 | * # line 500 "foo.pm" |
436 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
437 | */ |
438 | ||
76e3520e | 439 | STATIC void |
cea2e8a9 | 440 | S_incline(pTHX_ char *s) |
463ee0b2 | 441 | { |
0f15f207 | 442 | dTHR; |
463ee0b2 LW |
443 | char *t; |
444 | char *n; | |
445 | char ch; | |
446 | int sawline = 0; | |
447 | ||
3280af22 | 448 | PL_curcop->cop_line++; |
463ee0b2 LW |
449 | if (*s++ != '#') |
450 | return; | |
451 | while (*s == ' ' || *s == '\t') s++; | |
452 | if (strnEQ(s, "line ", 5)) { | |
453 | s += 5; | |
454 | sawline = 1; | |
455 | } | |
456 | if (!isDIGIT(*s)) | |
457 | return; | |
458 | n = s; | |
459 | while (isDIGIT(*s)) | |
460 | s++; | |
461 | while (*s == ' ' || *s == '\t') | |
462 | s++; | |
463 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
464 | s++; | |
465 | else { | |
466 | if (!sawline) | |
467 | return; /* false alarm */ | |
468 | for (t = s; !isSPACE(*t); t++) ; | |
469 | } | |
470 | ch = *t; | |
471 | *t = '\0'; | |
472 | if (t - s > 0) | |
3280af22 | 473 | PL_curcop->cop_filegv = gv_fetchfile(s); |
463ee0b2 | 474 | else |
3280af22 | 475 | PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); |
463ee0b2 | 476 | *t = ch; |
3280af22 | 477 | PL_curcop->cop_line = atoi(n)-1; |
463ee0b2 LW |
478 | } |
479 | ||
ffb4593c NT |
480 | /* |
481 | * S_skipspace | |
482 | * Called to gobble the appropriate amount and type of whitespace. | |
483 | * Skips comments as well. | |
484 | */ | |
485 | ||
76e3520e | 486 | STATIC char * |
cea2e8a9 | 487 | S_skipspace(pTHX_ register char *s) |
a687059c | 488 | { |
11343788 | 489 | dTHR; |
3280af22 NIS |
490 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
491 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
492 | s++; |
493 | return s; | |
494 | } | |
495 | for (;;) { | |
fd049845 | 496 | STRLEN prevlen; |
09bef843 SB |
497 | SSize_t oldprevlen, oldoldprevlen; |
498 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
499 | while (s < PL_bufend && isSPACE(*s)) { |
500 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
501 | incline(s); | |
502 | } | |
ffb4593c NT |
503 | |
504 | /* comment */ | |
3280af22 NIS |
505 | if (s < PL_bufend && *s == '#') { |
506 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 507 | s++; |
60e6418e | 508 | if (s < PL_bufend) { |
463ee0b2 | 509 | s++; |
60e6418e GS |
510 | if (PL_in_eval && !PL_rsfp) { |
511 | incline(s); | |
512 | continue; | |
513 | } | |
514 | } | |
463ee0b2 | 515 | } |
ffb4593c NT |
516 | |
517 | /* only continue to recharge the buffer if we're at the end | |
518 | * of the buffer, we're not reading from a source filter, and | |
519 | * we're in normal lexing mode | |
520 | */ | |
09bef843 SB |
521 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
522 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 523 | return s; |
ffb4593c NT |
524 | |
525 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
526 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
527 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
528 | { | |
529 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
530 | if (PL_minus_n || PL_minus_p) { |
531 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
532 | ";}continue{print or die qq(-p destination: $!\\n)" : |
533 | ""); | |
3280af22 NIS |
534 | sv_catpv(PL_linestr,";}"); |
535 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
536 | } |
537 | else | |
3280af22 | 538 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
539 | |
540 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
541 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
542 | = SvPVX(PL_linestr); | |
3280af22 | 543 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
544 | |
545 | /* Close the filehandle. Could be from -P preprocessor, | |
546 | * STDIN, or a regular file. If we were reading code from | |
547 | * STDIN (because the commandline held no -e or filename) | |
548 | * then we don't close it, we reset it so the code can | |
549 | * read from STDIN too. | |
550 | */ | |
551 | ||
3280af22 NIS |
552 | if (PL_preprocess && !PL_in_eval) |
553 | (void)PerlProc_pclose(PL_rsfp); | |
554 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
555 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 556 | else |
3280af22 NIS |
557 | (void)PerlIO_close(PL_rsfp); |
558 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
559 | return s; |
560 | } | |
ffb4593c NT |
561 | |
562 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
563 | /* make corresponding updates to old pointers, for yyerror() */ |
564 | oldprevlen = PL_oldbufptr - PL_bufend; | |
565 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
566 | if (PL_last_uni) | |
567 | oldunilen = PL_last_uni - PL_bufend; | |
568 | if (PL_last_lop) | |
569 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
570 | PL_linestart = PL_bufptr = s + prevlen; |
571 | PL_bufend = s + SvCUR(PL_linestr); | |
572 | s = PL_bufptr; | |
09bef843 SB |
573 | PL_oldbufptr = s + oldprevlen; |
574 | PL_oldoldbufptr = s + oldoldprevlen; | |
575 | if (PL_last_uni) | |
576 | PL_last_uni = s + oldunilen; | |
577 | if (PL_last_lop) | |
578 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 579 | incline(s); |
ffb4593c NT |
580 | |
581 | /* debugger active and we're not compiling the debugger code, | |
582 | * so store the line into the debugger's array of lines | |
583 | */ | |
3280af22 | 584 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
585 | SV *sv = NEWSV(85,0); |
586 | ||
587 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
588 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
589 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
8990e307 | 590 | } |
463ee0b2 | 591 | } |
a687059c | 592 | } |
378cc40b | 593 | |
ffb4593c NT |
594 | /* |
595 | * S_check_uni | |
596 | * Check the unary operators to ensure there's no ambiguity in how they're | |
597 | * used. An ambiguous piece of code would be: | |
598 | * rand + 5 | |
599 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
600 | * the +5 is its argument. | |
601 | */ | |
602 | ||
76e3520e | 603 | STATIC void |
cea2e8a9 | 604 | S_check_uni(pTHX) |
ba106d47 | 605 | { |
2f3197b3 | 606 | char *s; |
a0d0e21e | 607 | char *t; |
0453d815 | 608 | dTHR; |
2f3197b3 | 609 | |
3280af22 | 610 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 611 | return; |
3280af22 NIS |
612 | while (isSPACE(*PL_last_uni)) |
613 | PL_last_uni++; | |
834a4ddd | 614 | for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ; |
3280af22 | 615 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 616 | return; |
0453d815 | 617 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 618 | char ch = *s; |
0453d815 PM |
619 | *s = '\0'; |
620 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
621 | "Warning: Use of \"%s\" without parens is ambiguous", | |
622 | PL_last_uni); | |
623 | *s = ch; | |
624 | } | |
2f3197b3 LW |
625 | } |
626 | ||
ffb4593c NT |
627 | /* workaround to replace the UNI() macro with a function. Only the |
628 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
629 | * source indicate Microport Unix might need it too. | |
630 | */ | |
631 | ||
ffed7fef LW |
632 | #ifdef CRIPPLED_CC |
633 | ||
634 | #undef UNI | |
ffed7fef | 635 | #define UNI(f) return uni(f,s) |
ffed7fef | 636 | |
76e3520e | 637 | STATIC int |
cea2e8a9 | 638 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
639 | { |
640 | yylval.ival = f; | |
3280af22 NIS |
641 | PL_expect = XTERM; |
642 | PL_bufptr = s; | |
8f872242 NIS |
643 | PL_last_uni = PL_oldbufptr; |
644 | PL_last_lop_op = f; | |
ffed7fef LW |
645 | if (*s == '(') |
646 | return FUNC1; | |
647 | s = skipspace(s); | |
648 | if (*s == '(') | |
649 | return FUNC1; | |
650 | else | |
651 | return UNIOP; | |
652 | } | |
653 | ||
a0d0e21e LW |
654 | #endif /* CRIPPLED_CC */ |
655 | ||
ffb4593c NT |
656 | /* |
657 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
658 | * with a subroutine, S_lop() for which LOP is just another name. | |
659 | */ | |
660 | ||
a0d0e21e LW |
661 | #define LOP(f,x) return lop(f,x,s) |
662 | ||
ffb4593c NT |
663 | /* |
664 | * S_lop | |
665 | * Build a list operator (or something that might be one). The rules: | |
666 | * - if we have a next token, then it's a list operator [why?] | |
667 | * - if the next thing is an opening paren, then it's a function | |
668 | * - else it's a list operator | |
669 | */ | |
670 | ||
76e3520e | 671 | STATIC I32 |
cea2e8a9 | 672 | S_lop(pTHX_ I32 f, expectation x, char *s) |
ffed7fef | 673 | { |
0f15f207 | 674 | dTHR; |
79072805 | 675 | yylval.ival = f; |
35c8bce7 | 676 | CLINE; |
3280af22 NIS |
677 | PL_expect = x; |
678 | PL_bufptr = s; | |
679 | PL_last_lop = PL_oldbufptr; | |
680 | PL_last_lop_op = f; | |
681 | if (PL_nexttoke) | |
a0d0e21e | 682 | return LSTOP; |
79072805 LW |
683 | if (*s == '(') |
684 | return FUNC; | |
685 | s = skipspace(s); | |
686 | if (*s == '(') | |
687 | return FUNC; | |
688 | else | |
689 | return LSTOP; | |
690 | } | |
691 | ||
ffb4593c NT |
692 | /* |
693 | * S_force_next | |
9cbb5ea2 | 694 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 695 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
696 | * to know what token to return the next time the lexer is called. Caller |
697 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
698 | * handles the token correctly. | |
ffb4593c NT |
699 | */ |
700 | ||
76e3520e | 701 | STATIC void |
cea2e8a9 | 702 | S_force_next(pTHX_ I32 type) |
79072805 | 703 | { |
3280af22 NIS |
704 | PL_nexttype[PL_nexttoke] = type; |
705 | PL_nexttoke++; | |
706 | if (PL_lex_state != LEX_KNOWNEXT) { | |
707 | PL_lex_defer = PL_lex_state; | |
708 | PL_lex_expect = PL_expect; | |
709 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
710 | } |
711 | } | |
712 | ||
ffb4593c NT |
713 | /* |
714 | * S_force_word | |
715 | * When the lexer knows the next thing is a word (for instance, it has | |
716 | * just seen -> and it knows that the next char is a word char, then | |
717 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
718 | * | |
719 | * Arguments: | |
720 | * char *start : start of the buffer | |
721 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) | |
722 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
723 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
724 | * int allow_pack : if true, : characters will also be allowed (require, | |
725 | * use, etc. do this) | |
9cbb5ea2 | 726 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
727 | */ |
728 | ||
76e3520e | 729 | STATIC char * |
cea2e8a9 | 730 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 731 | { |
463ee0b2 LW |
732 | register char *s; |
733 | STRLEN len; | |
734 | ||
735 | start = skipspace(start); | |
736 | s = start; | |
834a4ddd | 737 | if (isIDFIRST_lazy(s) || |
a0d0e21e | 738 | (allow_pack && *s == ':') || |
15f0808c | 739 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 740 | { |
3280af22 NIS |
741 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
742 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
743 | return start; |
744 | if (token == METHOD) { | |
745 | s = skipspace(s); | |
746 | if (*s == '(') | |
3280af22 | 747 | PL_expect = XTERM; |
463ee0b2 | 748 | else { |
3280af22 | 749 | PL_expect = XOPERATOR; |
463ee0b2 | 750 | } |
79072805 | 751 | } |
3280af22 NIS |
752 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
753 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
754 | force_next(token); |
755 | } | |
756 | return s; | |
757 | } | |
758 | ||
ffb4593c NT |
759 | /* |
760 | * S_force_ident | |
9cbb5ea2 | 761 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
762 | * text only contains the "foo" portion. The first argument is a pointer |
763 | * to the "foo", and the second argument is the type symbol to prefix. | |
764 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 765 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
766 | */ |
767 | ||
76e3520e | 768 | STATIC void |
cea2e8a9 | 769 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
770 | { |
771 | if (s && *s) { | |
11343788 | 772 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 773 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 774 | force_next(WORD); |
748a9306 | 775 | if (kind) { |
e858de61 | 776 | dTHR; /* just for in_eval */ |
11343788 | 777 | o->op_private = OPpCONST_ENTERED; |
55497cff | 778 | /* XXX see note in pp_entereval() for why we forgo typo |
779 | warnings if the symbol must be introduced in an eval. | |
780 | GSAR 96-10-12 */ | |
3280af22 | 781 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
782 | kind == '$' ? SVt_PV : |
783 | kind == '@' ? SVt_PVAV : | |
784 | kind == '%' ? SVt_PVHV : | |
785 | SVt_PVGV | |
786 | ); | |
748a9306 | 787 | } |
79072805 LW |
788 | } |
789 | } | |
790 | ||
ffb4593c NT |
791 | /* |
792 | * S_force_version | |
793 | * Forces the next token to be a version number. | |
794 | */ | |
795 | ||
76e3520e | 796 | STATIC char * |
cea2e8a9 | 797 | S_force_version(pTHX_ char *s) |
89bfa8cd | 798 | { |
799 | OP *version = Nullop; | |
800 | ||
801 | s = skipspace(s); | |
802 | ||
803 | /* default VERSION number -- GBARR */ | |
804 | ||
805 | if(isDIGIT(*s)) { | |
806 | char *d; | |
807 | int c; | |
55497cff | 808 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 809 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
810 | s = scan_num(s); | |
811 | /* real VERSION number -- GBARR */ | |
812 | version = yylval.opval; | |
813 | } | |
814 | } | |
815 | ||
816 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 817 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 818 | force_next(WORD); |
819 | ||
820 | return (s); | |
821 | } | |
822 | ||
ffb4593c NT |
823 | /* |
824 | * S_tokeq | |
825 | * Tokenize a quoted string passed in as an SV. It finds the next | |
826 | * chunk, up to end of string or a backslash. It may make a new | |
827 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
828 | * turns \\ into \. | |
829 | */ | |
830 | ||
76e3520e | 831 | STATIC SV * |
cea2e8a9 | 832 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
833 | { |
834 | register char *s; | |
835 | register char *send; | |
836 | register char *d; | |
b3ac6de7 IZ |
837 | STRLEN len = 0; |
838 | SV *pv = sv; | |
79072805 LW |
839 | |
840 | if (!SvLEN(sv)) | |
b3ac6de7 | 841 | goto finish; |
79072805 | 842 | |
a0d0e21e | 843 | s = SvPV_force(sv, len); |
748a9306 | 844 | if (SvIVX(sv) == -1) |
b3ac6de7 | 845 | goto finish; |
463ee0b2 | 846 | send = s + len; |
79072805 LW |
847 | while (s < send && *s != '\\') |
848 | s++; | |
849 | if (s == send) | |
b3ac6de7 | 850 | goto finish; |
79072805 | 851 | d = s; |
3280af22 | 852 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 853 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
854 | while (s < send) { |
855 | if (*s == '\\') { | |
a0d0e21e | 856 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
857 | s++; /* all that, just for this */ |
858 | } | |
859 | *d++ = *s++; | |
860 | } | |
861 | *d = '\0'; | |
463ee0b2 | 862 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 863 | finish: |
3280af22 | 864 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 865 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
866 | return sv; |
867 | } | |
868 | ||
ffb4593c NT |
869 | /* |
870 | * Now come three functions related to double-quote context, | |
871 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
872 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
873 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
874 | * to handle functions and concatenation. | |
875 | * They assume that whoever calls them will be setting up a fake | |
876 | * join call, because each subthing puts a ',' after it. This lets | |
877 | * "lower \luPpEr" | |
878 | * become | |
879 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
880 | * | |
881 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
882 | * arguments and join's arguments are created or not). | |
883 | */ | |
884 | ||
885 | /* | |
886 | * S_sublex_start | |
887 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
888 | * | |
889 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
890 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
891 | * | |
892 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
893 | * | |
894 | * Everything else becomes a FUNC. | |
895 | * | |
896 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
897 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
898 | * call to S_sublex_push(). | |
899 | */ | |
900 | ||
76e3520e | 901 | STATIC I32 |
cea2e8a9 | 902 | S_sublex_start(pTHX) |
79072805 LW |
903 | { |
904 | register I32 op_type = yylval.ival; | |
79072805 LW |
905 | |
906 | if (op_type == OP_NULL) { | |
3280af22 NIS |
907 | yylval.opval = PL_lex_op; |
908 | PL_lex_op = Nullop; | |
79072805 LW |
909 | return THING; |
910 | } | |
911 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 912 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
913 | |
914 | if (SvTYPE(sv) == SVt_PVIV) { | |
915 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
916 | STRLEN len; | |
917 | char *p; | |
918 | SV *nsv; | |
919 | ||
920 | p = SvPV(sv, len); | |
79cb57f6 | 921 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
922 | SvREFCNT_dec(sv); |
923 | sv = nsv; | |
924 | } | |
925 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 926 | PL_lex_stuff = Nullsv; |
79072805 LW |
927 | return THING; |
928 | } | |
929 | ||
3280af22 NIS |
930 | PL_sublex_info.super_state = PL_lex_state; |
931 | PL_sublex_info.sub_inwhat = op_type; | |
932 | PL_sublex_info.sub_op = PL_lex_op; | |
933 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 934 | |
3280af22 NIS |
935 | PL_expect = XTERM; |
936 | if (PL_lex_op) { | |
937 | yylval.opval = PL_lex_op; | |
938 | PL_lex_op = Nullop; | |
55497cff | 939 | return PMFUNC; |
940 | } | |
941 | else | |
942 | return FUNC; | |
943 | } | |
944 | ||
ffb4593c NT |
945 | /* |
946 | * S_sublex_push | |
947 | * Create a new scope to save the lexing state. The scope will be | |
948 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
949 | * to the uc, lc, etc. found before. | |
950 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
951 | */ | |
952 | ||
76e3520e | 953 | STATIC I32 |
cea2e8a9 | 954 | S_sublex_push(pTHX) |
55497cff | 955 | { |
0f15f207 | 956 | dTHR; |
f46d017c | 957 | ENTER; |
55497cff | 958 | |
3280af22 NIS |
959 | PL_lex_state = PL_sublex_info.super_state; |
960 | SAVEI32(PL_lex_dojoin); | |
961 | SAVEI32(PL_lex_brackets); | |
962 | SAVEI32(PL_lex_fakebrack); | |
963 | SAVEI32(PL_lex_casemods); | |
964 | SAVEI32(PL_lex_starts); | |
965 | SAVEI32(PL_lex_state); | |
966 | SAVESPTR(PL_lex_inpat); | |
967 | SAVEI32(PL_lex_inwhat); | |
968 | SAVEI16(PL_curcop->cop_line); | |
969 | SAVEPPTR(PL_bufptr); | |
970 | SAVEPPTR(PL_oldbufptr); | |
971 | SAVEPPTR(PL_oldoldbufptr); | |
972 | SAVEPPTR(PL_linestart); | |
973 | SAVESPTR(PL_linestr); | |
974 | SAVEPPTR(PL_lex_brackstack); | |
975 | SAVEPPTR(PL_lex_casestack); | |
976 | ||
977 | PL_linestr = PL_lex_stuff; | |
978 | PL_lex_stuff = Nullsv; | |
979 | ||
9cbb5ea2 GS |
980 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
981 | = SvPVX(PL_linestr); | |
3280af22 NIS |
982 | PL_bufend += SvCUR(PL_linestr); |
983 | SAVEFREESV(PL_linestr); | |
984 | ||
985 | PL_lex_dojoin = FALSE; | |
986 | PL_lex_brackets = 0; | |
987 | PL_lex_fakebrack = 0; | |
988 | New(899, PL_lex_brackstack, 120, char); | |
989 | New(899, PL_lex_casestack, 12, char); | |
990 | SAVEFREEPV(PL_lex_brackstack); | |
991 | SAVEFREEPV(PL_lex_casestack); | |
992 | PL_lex_casemods = 0; | |
993 | *PL_lex_casestack = '\0'; | |
994 | PL_lex_starts = 0; | |
995 | PL_lex_state = LEX_INTERPCONCAT; | |
996 | PL_curcop->cop_line = PL_multi_start; | |
997 | ||
998 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
999 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1000 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1001 | else |
3280af22 | 1002 | PL_lex_inpat = Nullop; |
79072805 | 1003 | |
55497cff | 1004 | return '('; |
79072805 LW |
1005 | } |
1006 | ||
ffb4593c NT |
1007 | /* |
1008 | * S_sublex_done | |
1009 | * Restores lexer state after a S_sublex_push. | |
1010 | */ | |
1011 | ||
76e3520e | 1012 | STATIC I32 |
cea2e8a9 | 1013 | S_sublex_done(pTHX) |
79072805 | 1014 | { |
3280af22 NIS |
1015 | if (!PL_lex_starts++) { |
1016 | PL_expect = XOPERATOR; | |
79cb57f6 | 1017 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1018 | return THING; |
1019 | } | |
1020 | ||
3280af22 NIS |
1021 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1022 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1023 | return yylex(); |
79072805 LW |
1024 | } |
1025 | ||
ffb4593c | 1026 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1027 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1028 | PL_linestr = PL_lex_repl; | |
1029 | PL_lex_inpat = 0; | |
1030 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1031 | PL_bufend += SvCUR(PL_linestr); | |
1032 | SAVEFREESV(PL_linestr); | |
1033 | PL_lex_dojoin = FALSE; | |
1034 | PL_lex_brackets = 0; | |
1035 | PL_lex_fakebrack = 0; | |
1036 | PL_lex_casemods = 0; | |
1037 | *PL_lex_casestack = '\0'; | |
1038 | PL_lex_starts = 0; | |
25da4f38 | 1039 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1040 | PL_lex_state = LEX_INTERPNORMAL; |
1041 | PL_lex_starts++; | |
e9fa98b2 HS |
1042 | /* we don't clear PL_lex_repl here, so that we can check later |
1043 | whether this is an evalled subst; that means we rely on the | |
1044 | logic to ensure sublex_done() is called again only via the | |
1045 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1046 | } |
e9fa98b2 | 1047 | else { |
3280af22 | 1048 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1049 | PL_lex_repl = Nullsv; |
1050 | } | |
79072805 | 1051 | return ','; |
ffed7fef LW |
1052 | } |
1053 | else { | |
f46d017c | 1054 | LEAVE; |
3280af22 NIS |
1055 | PL_bufend = SvPVX(PL_linestr); |
1056 | PL_bufend += SvCUR(PL_linestr); | |
1057 | PL_expect = XOPERATOR; | |
09bef843 | 1058 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1059 | return ')'; |
ffed7fef LW |
1060 | } |
1061 | } | |
1062 | ||
02aa26ce NT |
1063 | /* |
1064 | scan_const | |
1065 | ||
1066 | Extracts a pattern, double-quoted string, or transliteration. This | |
1067 | is terrifying code. | |
1068 | ||
3280af22 NIS |
1069 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1070 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1071 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1072 | ||
9b599b2a GS |
1073 | Returns a pointer to the character scanned up to. Iff this is |
1074 | advanced from the start pointer supplied (ie if anything was | |
1075 | successfully parsed), will leave an OP for the substring scanned | |
1076 | in yylval. Caller must intuit reason for not parsing further | |
1077 | by looking at the next characters herself. | |
1078 | ||
02aa26ce NT |
1079 | In patterns: |
1080 | backslashes: | |
1081 | double-quoted style: \r and \n | |
1082 | regexp special ones: \D \s | |
1083 | constants: \x3 | |
1084 | backrefs: \1 (deprecated in substitution replacements) | |
1085 | case and quoting: \U \Q \E | |
1086 | stops on @ and $, but not for $ as tail anchor | |
1087 | ||
1088 | In transliterations: | |
1089 | characters are VERY literal, except for - not at the start or end | |
1090 | of the string, which indicates a range. scan_const expands the | |
1091 | range to the full set of intermediate characters. | |
1092 | ||
1093 | In double-quoted strings: | |
1094 | backslashes: | |
1095 | double-quoted style: \r and \n | |
1096 | constants: \x3 | |
1097 | backrefs: \1 (deprecated) | |
1098 | case and quoting: \U \Q \E | |
1099 | stops on @ and $ | |
1100 | ||
1101 | scan_const does *not* construct ops to handle interpolated strings. | |
1102 | It stops processing as soon as it finds an embedded $ or @ variable | |
1103 | and leaves it to the caller to work out what's going on. | |
1104 | ||
1105 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1106 | ||
1107 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1108 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1109 | followed by one of ")| \n\t" | |
1110 | ||
1111 | \1 (backreferences) are turned into $1 | |
1112 | ||
1113 | The structure of the code is | |
1114 | while (there's a character to process) { | |
1115 | handle transliteration ranges | |
1116 | skip regexp comments | |
1117 | skip # initiated comments in //x patterns | |
1118 | check for embedded @foo | |
1119 | check for embedded scalars | |
1120 | if (backslash) { | |
1121 | leave intact backslashes from leave (below) | |
1122 | deprecate \1 in strings and sub replacements | |
1123 | handle string-changing backslashes \l \U \Q \E, etc. | |
1124 | switch (what was escaped) { | |
1125 | handle - in a transliteration (becomes a literal -) | |
1126 | handle \132 octal characters | |
1127 | handle 0x15 hex characters | |
1128 | handle \cV (control V) | |
1129 | handle printf backslashes (\f, \r, \n, etc) | |
1130 | } (end switch) | |
1131 | } (end if backslash) | |
1132 | } (end while character to read) | |
1133 | ||
1134 | */ | |
1135 | ||
76e3520e | 1136 | STATIC char * |
cea2e8a9 | 1137 | S_scan_const(pTHX_ char *start) |
79072805 | 1138 | { |
3280af22 | 1139 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1140 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1141 | register char *s = start; /* start of the constant */ | |
1142 | register char *d = SvPVX(sv); /* destination for copies */ | |
1143 | bool dorange = FALSE; /* are we in a translit range? */ | |
1144 | I32 len; /* ? */ | |
ac2262e3 | 1145 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1146 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1147 | : UTF; | |
ac2262e3 | 1148 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1149 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1150 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1151 | : UTF; |
9cbb5ea2 | 1152 | char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1153 | PL_lex_inpat |
423cee85 | 1154 | ? "\\.^$@AGZdDwWsSbBpPXO+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1155 | : ""; |
79072805 LW |
1156 | |
1157 | while (s < send || dorange) { | |
02aa26ce | 1158 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1159 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1160 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1161 | if (dorange) { |
02aa26ce | 1162 | I32 i; /* current expanded character */ |
8ada0baa | 1163 | I32 min; /* first character in range */ |
02aa26ce NT |
1164 | I32 max; /* last character in range */ |
1165 | ||
1166 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1167 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1168 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1169 | d -= 2; /* eat the first char and the - */ |
1170 | ||
8ada0baa JH |
1171 | min = (U8)*d; /* first char in range */ |
1172 | max = (U8)d[1]; /* last char in range */ | |
1173 | ||
1174 | #ifndef ASCIIish | |
1175 | if ((isLOWER(min) && isLOWER(max)) || | |
1176 | (isUPPER(min) && isUPPER(max))) { | |
1177 | if (isLOWER(min)) { | |
1178 | for (i = min; i <= max; i++) | |
1179 | if (isLOWER(i)) | |
1180 | *d++ = i; | |
1181 | } else { | |
1182 | for (i = min; i <= max; i++) | |
1183 | if (isUPPER(i)) | |
1184 | *d++ = i; | |
1185 | } | |
1186 | } | |
1187 | else | |
1188 | #endif | |
1189 | for (i = min; i <= max; i++) | |
1190 | *d++ = i; | |
02aa26ce NT |
1191 | |
1192 | /* mark the range as done, and continue */ | |
79072805 LW |
1193 | dorange = FALSE; |
1194 | continue; | |
1195 | } | |
02aa26ce NT |
1196 | |
1197 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1198 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1199 | if (utf) { |
a176fa2a | 1200 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1201 | s++; |
1202 | continue; | |
1203 | } | |
79072805 LW |
1204 | dorange = TRUE; |
1205 | s++; | |
1206 | } | |
1207 | } | |
02aa26ce NT |
1208 | |
1209 | /* if we get here, we're not doing a transliteration */ | |
1210 | ||
0f5d15d6 IZ |
1211 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1212 | except for the last char, which will be done separately. */ | |
3280af22 | 1213 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1214 | if (s[2] == '#') { |
1215 | while (s < send && *s != ')') | |
1216 | *d++ = *s++; | |
0f5d15d6 IZ |
1217 | } else if (s[2] == '{' |
1218 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1219 | I32 count = 1; |
0f5d15d6 | 1220 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1221 | char c; |
1222 | ||
d9f97599 GS |
1223 | while (count && (c = *regparse)) { |
1224 | if (c == '\\' && regparse[1]) | |
1225 | regparse++; | |
cc6b7395 IZ |
1226 | else if (c == '{') |
1227 | count++; | |
1228 | else if (c == '}') | |
1229 | count--; | |
d9f97599 | 1230 | regparse++; |
cc6b7395 | 1231 | } |
5bdf89e7 IZ |
1232 | if (*regparse != ')') { |
1233 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1234 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1235 | } |
0f5d15d6 | 1236 | while (s < regparse) |
cc6b7395 IZ |
1237 | *d++ = *s++; |
1238 | } | |
748a9306 | 1239 | } |
02aa26ce NT |
1240 | |
1241 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1242 | else if (*s == '#' && PL_lex_inpat && |
1243 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1244 | while (s+1 < send && *s != '\n') |
1245 | *d++ = *s++; | |
1246 | } | |
02aa26ce NT |
1247 | |
1248 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
834a4ddd | 1249 | else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1]))) |
79072805 | 1250 | break; |
02aa26ce NT |
1251 | |
1252 | /* check for embedded scalars. only stop if we're sure it's a | |
1253 | variable. | |
1254 | */ | |
79072805 | 1255 | else if (*s == '$') { |
3280af22 | 1256 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1257 | break; |
c277df42 | 1258 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1259 | break; /* in regexp, $ might be tail anchor */ |
1260 | } | |
02aa26ce | 1261 | |
a0ed51b3 LW |
1262 | /* (now in tr/// code again) */ |
1263 | ||
d008e5eb GS |
1264 | if (*s & 0x80 && thisutf) { |
1265 | dTHR; /* only for ckWARN */ | |
1266 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1267 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1268 | if (len) { |
1269 | while (len--) | |
1270 | *d++ = *s++; | |
1271 | continue; | |
1272 | } | |
a0ed51b3 LW |
1273 | } |
1274 | } | |
1275 | ||
02aa26ce | 1276 | /* backslashes */ |
79072805 LW |
1277 | if (*s == '\\' && s+1 < send) { |
1278 | s++; | |
02aa26ce NT |
1279 | |
1280 | /* some backslashes we leave behind */ | |
c9f97d15 | 1281 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1282 | *d++ = '\\'; |
1283 | *d++ = *s++; | |
1284 | continue; | |
1285 | } | |
02aa26ce NT |
1286 | |
1287 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1288 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1289 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1290 | { |
d008e5eb | 1291 | dTHR; /* only for ckWARN */ |
599cee73 | 1292 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1293 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1294 | *--s = '$'; |
1295 | break; | |
1296 | } | |
02aa26ce NT |
1297 | |
1298 | /* string-change backslash escapes */ | |
3280af22 | 1299 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1300 | --s; |
1301 | break; | |
1302 | } | |
02aa26ce NT |
1303 | |
1304 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1305 | switch (*s) { |
02aa26ce NT |
1306 | |
1307 | /* quoted - in transliterations */ | |
79072805 | 1308 | case '-': |
3280af22 | 1309 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1310 | *d++ = *s++; |
1311 | continue; | |
1312 | } | |
1313 | /* FALL THROUGH */ | |
1314 | default: | |
11b8faa4 JH |
1315 | { |
1316 | dTHR; | |
1317 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) | |
cea2e8a9 | 1318 | Perl_warner(aTHX_ WARN_UNSAFE, |
11b8faa4 JH |
1319 | "Unrecognized escape \\%c passed through", |
1320 | *s); | |
1321 | /* default action is to copy the quoted character */ | |
1322 | *d++ = *s++; | |
1323 | continue; | |
1324 | } | |
02aa26ce NT |
1325 | |
1326 | /* \132 indicates an octal constant */ | |
79072805 LW |
1327 | case '0': case '1': case '2': case '3': |
1328 | case '4': case '5': case '6': case '7': | |
1329 | *d++ = scan_oct(s, 3, &len); | |
1330 | s += len; | |
1331 | continue; | |
02aa26ce NT |
1332 | |
1333 | /* \x24 indicates a hex constant */ | |
79072805 | 1334 | case 'x': |
a0ed51b3 LW |
1335 | ++s; |
1336 | if (*s == '{') { | |
1337 | char* e = strchr(s, '}'); | |
1338 | ||
adaeee49 | 1339 | if (!e) { |
a0ed51b3 | 1340 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1341 | e = s; |
1342 | } | |
d008e5eb GS |
1343 | if (!utf) { |
1344 | dTHR; | |
1345 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1346 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1347 | "Use of \\x{} without utf8 declaration"); |
1348 | } | |
a0ed51b3 | 1349 | /* note: utf always shorter than hex */ |
dfe13c55 GS |
1350 | d = (char*)uv_to_utf8((U8*)d, |
1351 | scan_hex(s + 1, e - s - 1, &len)); | |
a0ed51b3 | 1352 | s = e + 1; |
a0ed51b3 LW |
1353 | } |
1354 | else { | |
1355 | UV uv = (UV)scan_hex(s, 2, &len); | |
1356 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1357 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1358 | { | |
dfe13c55 | 1359 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1360 | } |
1361 | else { | |
d008e5eb GS |
1362 | if (uv >= 127 && UTF) { |
1363 | dTHR; | |
1364 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1365 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1366 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", |
1367 | len,s,len,s); | |
1368 | } | |
a0ed51b3 LW |
1369 | *d++ = (char)uv; |
1370 | } | |
1371 | s += len; | |
1372 | } | |
79072805 | 1373 | continue; |
02aa26ce | 1374 | |
423cee85 JH |
1375 | /* \C{latin small letter a} is a named character */ |
1376 | case 'C': | |
1377 | ++s; | |
1378 | if (*s == '{') { | |
1379 | char* e = strchr(s, '}'); | |
1380 | HV *hv; | |
1381 | SV **svp; | |
1382 | SV *res, *cv; | |
1383 | STRLEN len; | |
1384 | char *str; | |
1385 | char *why = Nullch; | |
1386 | ||
1387 | if (!e) { | |
1388 | yyerror("Missing right brace on \\C{}"); | |
1389 | e = s - 1; | |
1390 | goto cont_scan; | |
1391 | } | |
1392 | res = newSVpvn(s + 1, e - s - 1); | |
1393 | res = new_constant( Nullch, 0, "charnames", | |
1394 | res, Nullsv, "\\C{...}" ); | |
1395 | str = SvPV(res,len); | |
1396 | if (len > e - s + 4) { | |
1397 | char *odest = SvPVX(sv); | |
1398 | ||
1399 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1400 | d = SvPVX(sv) + (d - odest); | |
1401 | } | |
1402 | Copy(str, d, len, char); | |
1403 | d += len; | |
1404 | SvREFCNT_dec(res); | |
1405 | cont_scan: | |
1406 | s = e + 1; | |
1407 | } | |
1408 | else | |
1409 | yyerror("Missing braces on \\C{}"); | |
1410 | continue; | |
1411 | ||
02aa26ce | 1412 | /* \c is a control character */ |
79072805 LW |
1413 | case 'c': |
1414 | s++; | |
9d116dd7 JH |
1415 | #ifdef EBCDIC |
1416 | *d = *s++; | |
1417 | if (isLOWER(*d)) | |
1418 | *d = toUPPER(*d); | |
1419 | *d++ = toCTRL(*d); | |
1420 | #else | |
bbce6d69 | 1421 | len = *s++; |
1422 | *d++ = toCTRL(len); | |
9d116dd7 | 1423 | #endif |
79072805 | 1424 | continue; |
02aa26ce NT |
1425 | |
1426 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1427 | case 'b': |
1428 | *d++ = '\b'; | |
1429 | break; | |
1430 | case 'n': | |
1431 | *d++ = '\n'; | |
1432 | break; | |
1433 | case 'r': | |
1434 | *d++ = '\r'; | |
1435 | break; | |
1436 | case 'f': | |
1437 | *d++ = '\f'; | |
1438 | break; | |
1439 | case 't': | |
1440 | *d++ = '\t'; | |
1441 | break; | |
34a3fe2a PP |
1442 | #ifdef EBCDIC |
1443 | case 'e': | |
1444 | *d++ = '\047'; /* CP 1047 */ | |
1445 | break; | |
1446 | case 'a': | |
1447 | *d++ = '\057'; /* CP 1047 */ | |
1448 | break; | |
1449 | #else | |
79072805 LW |
1450 | case 'e': |
1451 | *d++ = '\033'; | |
1452 | break; | |
1453 | case 'a': | |
1454 | *d++ = '\007'; | |
1455 | break; | |
34a3fe2a | 1456 | #endif |
02aa26ce NT |
1457 | } /* end switch */ |
1458 | ||
79072805 LW |
1459 | s++; |
1460 | continue; | |
02aa26ce NT |
1461 | } /* end if (backslash) */ |
1462 | ||
79072805 | 1463 | *d++ = *s++; |
02aa26ce NT |
1464 | } /* while loop to process each character */ |
1465 | ||
1466 | /* terminate the string and set up the sv */ | |
79072805 | 1467 | *d = '\0'; |
463ee0b2 | 1468 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1469 | SvPOK_on(sv); |
1470 | ||
02aa26ce | 1471 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1472 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1473 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1474 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1475 | } |
02aa26ce | 1476 | |
9b599b2a | 1477 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1478 | if (s > PL_bufptr) { |
1479 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1480 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1481 | sv, Nullsv, |
3280af22 | 1482 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1483 | ? "tr" |
3280af22 | 1484 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1485 | ? "s" |
1486 | : "qq"))); | |
79072805 | 1487 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1488 | } else |
8990e307 | 1489 | SvREFCNT_dec(sv); |
79072805 LW |
1490 | return s; |
1491 | } | |
1492 | ||
ffb4593c NT |
1493 | /* S_intuit_more |
1494 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1495 | * FALSE otherwise. | |
ffb4593c NT |
1496 | * |
1497 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1498 | * | |
1499 | * ->[ and ->{ return TRUE | |
1500 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1501 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1502 | * if we're in a pattern and the first char is a { | |
1503 | * {4,5} (any digits around the comma) returns FALSE | |
1504 | * if we're in a pattern and the first char is a [ | |
1505 | * [] returns FALSE | |
1506 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1507 | * character class or not. It has to deal with things like | |
1508 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1509 | * anything else returns TRUE | |
1510 | */ | |
1511 | ||
9cbb5ea2 GS |
1512 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1513 | ||
76e3520e | 1514 | STATIC int |
cea2e8a9 | 1515 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1516 | { |
3280af22 | 1517 | if (PL_lex_brackets) |
79072805 LW |
1518 | return TRUE; |
1519 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1520 | return TRUE; | |
1521 | if (*s != '{' && *s != '[') | |
1522 | return FALSE; | |
3280af22 | 1523 | if (!PL_lex_inpat) |
79072805 LW |
1524 | return TRUE; |
1525 | ||
1526 | /* In a pattern, so maybe we have {n,m}. */ | |
1527 | if (*s == '{') { | |
1528 | s++; | |
1529 | if (!isDIGIT(*s)) | |
1530 | return TRUE; | |
1531 | while (isDIGIT(*s)) | |
1532 | s++; | |
1533 | if (*s == ',') | |
1534 | s++; | |
1535 | while (isDIGIT(*s)) | |
1536 | s++; | |
1537 | if (*s == '}') | |
1538 | return FALSE; | |
1539 | return TRUE; | |
1540 | ||
1541 | } | |
1542 | ||
1543 | /* On the other hand, maybe we have a character class */ | |
1544 | ||
1545 | s++; | |
1546 | if (*s == ']' || *s == '^') | |
1547 | return FALSE; | |
1548 | else { | |
ffb4593c | 1549 | /* this is terrifying, and it works */ |
79072805 LW |
1550 | int weight = 2; /* let's weigh the evidence */ |
1551 | char seen[256]; | |
f27ffc4a | 1552 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1553 | char *send = strchr(s,']'); |
3280af22 | 1554 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1555 | |
1556 | if (!send) /* has to be an expression */ | |
1557 | return TRUE; | |
1558 | ||
1559 | Zero(seen,256,char); | |
1560 | if (*s == '$') | |
1561 | weight -= 3; | |
1562 | else if (isDIGIT(*s)) { | |
1563 | if (s[1] != ']') { | |
1564 | if (isDIGIT(s[1]) && s[2] == ']') | |
1565 | weight -= 10; | |
1566 | } | |
1567 | else | |
1568 | weight -= 100; | |
1569 | } | |
1570 | for (; s < send; s++) { | |
1571 | last_un_char = un_char; | |
1572 | un_char = (unsigned char)*s; | |
1573 | switch (*s) { | |
1574 | case '@': | |
1575 | case '&': | |
1576 | case '$': | |
1577 | weight -= seen[un_char] * 10; | |
834a4ddd | 1578 | if (isALNUM_lazy(s+1)) { |
8903cb82 | 1579 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1580 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1581 | weight -= 100; |
1582 | else | |
1583 | weight -= 10; | |
1584 | } | |
1585 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1586 | strchr("[#!%*<>()-=",s[1])) { |
1587 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1588 | weight -= 10; |
1589 | else | |
1590 | weight -= 1; | |
1591 | } | |
1592 | break; | |
1593 | case '\\': | |
1594 | un_char = 254; | |
1595 | if (s[1]) { | |
93a17b20 | 1596 | if (strchr("wds]",s[1])) |
79072805 LW |
1597 | weight += 100; |
1598 | else if (seen['\''] || seen['"']) | |
1599 | weight += 1; | |
93a17b20 | 1600 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1601 | weight += 40; |
1602 | else if (isDIGIT(s[1])) { | |
1603 | weight += 40; | |
1604 | while (s[1] && isDIGIT(s[1])) | |
1605 | s++; | |
1606 | } | |
1607 | } | |
1608 | else | |
1609 | weight += 100; | |
1610 | break; | |
1611 | case '-': | |
1612 | if (s[1] == '\\') | |
1613 | weight += 50; | |
93a17b20 | 1614 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1615 | weight += 30; |
93a17b20 | 1616 | if (strchr("zZ79~",s[1])) |
79072805 | 1617 | weight += 30; |
f27ffc4a GS |
1618 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1619 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1620 | break; |
1621 | default: | |
93a17b20 | 1622 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1623 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1624 | char *d = tmpbuf; | |
1625 | while (isALPHA(*s)) | |
1626 | *d++ = *s++; | |
1627 | *d = '\0'; | |
1628 | if (keyword(tmpbuf, d - tmpbuf)) | |
1629 | weight -= 150; | |
1630 | } | |
1631 | if (un_char == last_un_char + 1) | |
1632 | weight += 5; | |
1633 | weight -= seen[un_char]; | |
1634 | break; | |
1635 | } | |
1636 | seen[un_char]++; | |
1637 | } | |
1638 | if (weight >= 0) /* probably a character class */ | |
1639 | return FALSE; | |
1640 | } | |
1641 | ||
1642 | return TRUE; | |
1643 | } | |
ffed7fef | 1644 | |
ffb4593c NT |
1645 | /* |
1646 | * S_intuit_method | |
1647 | * | |
1648 | * Does all the checking to disambiguate | |
1649 | * foo bar | |
1650 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1651 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1652 | * | |
1653 | * First argument is the stuff after the first token, e.g. "bar". | |
1654 | * | |
1655 | * Not a method if bar is a filehandle. | |
1656 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1657 | * Not a method if it's really "Foo $bar" | |
1658 | * Method if it's "foo $bar" | |
1659 | * Not a method if it's really "print foo $bar" | |
1660 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1661 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
1662 | * Not a method if bar is a filehandle or package, but is quotd with | |
1663 | * => | |
1664 | */ | |
1665 | ||
76e3520e | 1666 | STATIC int |
cea2e8a9 | 1667 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1668 | { |
1669 | char *s = start + (*start == '$'); | |
3280af22 | 1670 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1671 | STRLEN len; |
1672 | GV* indirgv; | |
1673 | ||
1674 | if (gv) { | |
b6c543e3 | 1675 | CV *cv; |
a0d0e21e LW |
1676 | if (GvIO(gv)) |
1677 | return 0; | |
b6c543e3 IZ |
1678 | if ((cv = GvCVu(gv))) { |
1679 | char *proto = SvPVX(cv); | |
1680 | if (proto) { | |
1681 | if (*proto == ';') | |
1682 | proto++; | |
1683 | if (*proto == '*') | |
1684 | return 0; | |
1685 | } | |
1686 | } else | |
a0d0e21e LW |
1687 | gv = 0; |
1688 | } | |
8903cb82 | 1689 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1690 | /* start is the beginning of the possible filehandle/object, |
1691 | * and s is the end of it | |
1692 | * tmpbuf is a copy of it | |
1693 | */ | |
1694 | ||
a0d0e21e | 1695 | if (*start == '$') { |
3280af22 | 1696 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1697 | return 0; |
1698 | s = skipspace(s); | |
3280af22 NIS |
1699 | PL_bufptr = start; |
1700 | PL_expect = XREF; | |
a0d0e21e LW |
1701 | return *s == '(' ? FUNCMETH : METHOD; |
1702 | } | |
1703 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1704 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1705 | len -= 2; | |
1706 | tmpbuf[len] = '\0'; | |
1707 | goto bare_package; | |
1708 | } | |
1709 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1710 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1711 | return 0; |
1712 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1713 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1714 | s = skipspace(s); |
3280af22 | 1715 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1716 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1717 | bare_package: |
3280af22 | 1718 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1719 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1720 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1721 | PL_expect = XTERM; | |
a0d0e21e | 1722 | force_next(WORD); |
3280af22 | 1723 | PL_bufptr = s; |
a0d0e21e LW |
1724 | return *s == '(' ? FUNCMETH : METHOD; |
1725 | } | |
1726 | } | |
1727 | return 0; | |
1728 | } | |
1729 | ||
ffb4593c NT |
1730 | /* |
1731 | * S_incl_perldb | |
1732 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1733 | * is set, it will return the contents of that, otherwise a | |
1734 | * compile-time require of perl5db.pl. | |
1735 | */ | |
1736 | ||
76e3520e | 1737 | STATIC char* |
cea2e8a9 | 1738 | S_incl_perldb(pTHX) |
a0d0e21e | 1739 | { |
3280af22 | 1740 | if (PL_perldb) { |
76e3520e | 1741 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1742 | |
1743 | if (pdb) | |
1744 | return pdb; | |
61bb5906 | 1745 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1746 | return "BEGIN { require 'perl5db.pl' }"; |
1747 | } | |
1748 | return ""; | |
1749 | } | |
1750 | ||
1751 | ||
16d20bd9 AD |
1752 | /* Encoded script support. filter_add() effectively inserts a |
1753 | * 'pre-processing' function into the current source input stream. | |
1754 | * Note that the filter function only applies to the current source file | |
1755 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1756 | * | |
1757 | * The datasv parameter (which may be NULL) can be used to pass | |
1758 | * private data to this instance of the filter. The filter function | |
1759 | * can recover the SV using the FILTER_DATA macro and use it to | |
1760 | * store private buffers and state information. | |
1761 | * | |
1762 | * The supplied datasv parameter is upgraded to a PVIO type | |
1763 | * and the IoDIRP field is used to store the function pointer. | |
1764 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1765 | * private use must be set using malloc'd pointers. | |
1766 | */ | |
16d20bd9 AD |
1767 | |
1768 | SV * | |
864dbfa3 | 1769 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 AD |
1770 | { |
1771 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
80252599 | 1772 | PL_filter_debug = atoi((char*)datasv); |
16d20bd9 AD |
1773 | return NULL; |
1774 | } | |
3280af22 NIS |
1775 | if (!PL_rsfp_filters) |
1776 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1777 | if (!datasv) |
8c52afec | 1778 | datasv = NEWSV(255,0); |
16d20bd9 | 1779 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1780 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1781 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
0453d815 | 1782 | #ifdef DEBUGGING |
80252599 | 1783 | if (PL_filter_debug) { |
2d8e6c8d | 1784 | STRLEN n_a; |
cea2e8a9 | 1785 | Perl_warn(aTHX_ "filter_add func %p (%s)", funcp, SvPV(datasv, n_a)); |
2d8e6c8d | 1786 | } |
0453d815 | 1787 | #endif /* DEBUGGING */ |
3280af22 NIS |
1788 | av_unshift(PL_rsfp_filters, 1); |
1789 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1790 | return(datasv); |
1791 | } | |
1792 | ||
1793 | ||
1794 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1795 | void |
864dbfa3 | 1796 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1797 | { |
0453d815 | 1798 | #ifdef DEBUGGING |
80252599 | 1799 | if (PL_filter_debug) |
cea2e8a9 | 1800 | Perl_warn(aTHX_ "filter_del func %p", funcp); |
0453d815 | 1801 | #endif /* DEBUGGING */ |
3280af22 | 1802 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1803 | return; |
1804 | /* if filter is on top of stack (usual case) just pop it off */ | |
677ca527 | 1805 | if (IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) == (DIR*)funcp){ |
a6c40364 | 1806 | IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) = NULL; |
3280af22 | 1807 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1808 | |
16d20bd9 AD |
1809 | return; |
1810 | } | |
1811 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1812 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1813 | } |
1814 | ||
1815 | ||
1816 | /* Invoke the n'th filter function for the current rsfp. */ | |
1817 | I32 | |
864dbfa3 | 1818 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1819 | |
1820 | ||
1821 | /* 0 = read one text line */ | |
a0d0e21e | 1822 | { |
16d20bd9 AD |
1823 | filter_t funcp; |
1824 | SV *datasv = NULL; | |
e50aee73 | 1825 | |
3280af22 | 1826 | if (!PL_rsfp_filters) |
16d20bd9 | 1827 | return -1; |
3280af22 | 1828 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1829 | /* Provide a default input filter to make life easy. */ |
1830 | /* Note that we append to the line. This is handy. */ | |
0453d815 | 1831 | #ifdef DEBUGGING |
80252599 | 1832 | if (PL_filter_debug) |
cea2e8a9 | 1833 | Perl_warn(aTHX_ "filter_read %d: from rsfp\n", idx); |
0453d815 | 1834 | #endif /* DEBUGGING */ |
16d20bd9 AD |
1835 | if (maxlen) { |
1836 | /* Want a block */ | |
1837 | int len ; | |
1838 | int old_len = SvCUR(buf_sv) ; | |
1839 | ||
1840 | /* ensure buf_sv is large enough */ | |
1841 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1842 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1843 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1844 | return -1; /* error */ |
1845 | else | |
1846 | return 0 ; /* end of file */ | |
1847 | } | |
16d20bd9 AD |
1848 | SvCUR_set(buf_sv, old_len + len) ; |
1849 | } else { | |
1850 | /* Want a line */ | |
3280af22 NIS |
1851 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1852 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1853 | return -1; /* error */ |
1854 | else | |
1855 | return 0 ; /* end of file */ | |
1856 | } | |
16d20bd9 AD |
1857 | } |
1858 | return SvCUR(buf_sv); | |
1859 | } | |
1860 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1861 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
0453d815 | 1862 | #ifdef DEBUGGING |
80252599 | 1863 | if (PL_filter_debug) |
cea2e8a9 | 1864 | Perl_warn(aTHX_ "filter_read %d: skipped (filter deleted)\n", idx); |
0453d815 | 1865 | #endif /* DEBUGGING */ |
16d20bd9 AD |
1866 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1867 | } | |
1868 | /* Get function pointer hidden within datasv */ | |
1869 | funcp = (filter_t)IoDIRP(datasv); | |
0453d815 | 1870 | #ifdef DEBUGGING |
80252599 | 1871 | if (PL_filter_debug) { |
2d8e6c8d | 1872 | STRLEN n_a; |
cea2e8a9 | 1873 | Perl_warn(aTHX_ "filter_read %d: via function %p (%s)\n", |
2d8e6c8d GS |
1874 | idx, funcp, SvPV(datasv,n_a)); |
1875 | } | |
0453d815 | 1876 | #endif /* DEBUGGING */ |
16d20bd9 AD |
1877 | /* Call function. The function is expected to */ |
1878 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1879 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1880 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1881 | } |
1882 | ||
76e3520e | 1883 | STATIC char * |
cea2e8a9 | 1884 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1885 | { |
a868473f | 1886 | #ifdef WIN32FILTER |
3280af22 | 1887 | if (!PL_rsfp_filters) { |
a868473f NIS |
1888 | filter_add(win32_textfilter,NULL); |
1889 | } | |
1890 | #endif | |
3280af22 | 1891 | if (PL_rsfp_filters) { |
16d20bd9 | 1892 | |
55497cff | 1893 | if (!append) |
1894 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1895 | if (FILTER_READ(0, sv, 0) > 0) |
1896 | return ( SvPVX(sv) ) ; | |
1897 | else | |
1898 | return Nullch ; | |
1899 | } | |
9d116dd7 | 1900 | else |
fd049845 | 1901 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1902 | } |
1903 | ||
1904 | ||
748a9306 LW |
1905 | #ifdef DEBUGGING |
1906 | static char* exp_name[] = | |
09bef843 SB |
1907 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1908 | "ATTRTERM", "TERMBLOCK" | |
1909 | }; | |
748a9306 | 1910 | #endif |
463ee0b2 | 1911 | |
02aa26ce NT |
1912 | /* |
1913 | yylex | |
1914 | ||
1915 | Works out what to call the token just pulled out of the input | |
1916 | stream. The yacc parser takes care of taking the ops we return and | |
1917 | stitching them into a tree. | |
1918 | ||
1919 | Returns: | |
1920 | PRIVATEREF | |
1921 | ||
1922 | Structure: | |
1923 | if read an identifier | |
1924 | if we're in a my declaration | |
1925 | croak if they tried to say my($foo::bar) | |
1926 | build the ops for a my() declaration | |
1927 | if it's an access to a my() variable | |
1928 | are we in a sort block? | |
1929 | croak if my($a); $a <=> $b | |
1930 | build ops for access to a my() variable | |
1931 | if in a dq string, and they've said @foo and we can't find @foo | |
1932 | croak | |
1933 | build ops for a bareword | |
1934 | if we already built the token before, use it. | |
1935 | */ | |
1936 | ||
864dbfa3 GS |
1937 | int |
1938 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 1939 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 1940 | #else |
cea2e8a9 | 1941 | Perl_yylex(pTHX) |
864dbfa3 | 1942 | #endif |
378cc40b | 1943 | { |
11343788 | 1944 | dTHR; |
79072805 | 1945 | register char *s; |
378cc40b | 1946 | register char *d; |
79072805 | 1947 | register I32 tmp; |
463ee0b2 | 1948 | STRLEN len; |
161b471a NIS |
1949 | GV *gv = Nullgv; |
1950 | GV **gvp = 0; | |
a687059c | 1951 | |
a1a0e61e TD |
1952 | #ifdef USE_PURE_BISON |
1953 | yylval_pointer = lvalp; | |
1954 | yychar_pointer = lcharp; | |
1955 | #endif | |
1956 | ||
02aa26ce | 1957 | /* check if there's an identifier for us to look at */ |
3280af22 | 1958 | if (PL_pending_ident) { |
02aa26ce | 1959 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1960 | char pit = PL_pending_ident; |
1961 | PL_pending_ident = 0; | |
bbce6d69 | 1962 | |
02aa26ce NT |
1963 | /* if we're in a my(), we can't allow dynamics here. |
1964 | $foo'bar has already been turned into $foo::bar, so | |
1965 | just check for colons. | |
1966 | ||
1967 | if it's a legal name, the OP is a PADANY. | |
1968 | */ | |
3280af22 NIS |
1969 | if (PL_in_my) { |
1970 | if (strchr(PL_tokenbuf,':')) | |
cea2e8a9 | 1971 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); |
02aa26ce | 1972 | |
bbce6d69 | 1973 | yylval.opval = newOP(OP_PADANY, 0); |
3280af22 | 1974 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); |
bbce6d69 | 1975 | return PRIVATEREF; |
1976 | } | |
1977 | ||
02aa26ce NT |
1978 | /* |
1979 | build the ops for accesses to a my() variable. | |
1980 | ||
1981 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1982 | then used in a comparison. This catches most, but not | |
1983 | all cases. For instance, it catches | |
1984 | sort { my($a); $a <=> $b } | |
1985 | but not | |
1986 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1987 | (although why you'd do that is anyone's guess). | |
1988 | */ | |
1989 | ||
3280af22 | 1990 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 1991 | #ifdef USE_THREADS |
54b9620d | 1992 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
1993 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
1994 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
1995 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1996 | { |
2faa37cc | 1997 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1998 | yylval.opval->op_targ = tmp; |
1999 | return PRIVATEREF; | |
2000 | } | |
2001 | #endif /* USE_THREADS */ | |
3280af22 | 2002 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
02aa26ce | 2003 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2004 | if (PL_last_lop_op == OP_SORT && |
2005 | PL_tokenbuf[0] == '$' && | |
2006 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2007 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2008 | { |
3280af22 NIS |
2009 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2010 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2011 | d++) |
2012 | { | |
2013 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2014 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2015 | PL_tokenbuf); |
a863c7d1 | 2016 | } |
bbce6d69 | 2017 | } |
2018 | } | |
bbce6d69 | 2019 | |
a863c7d1 MB |
2020 | yylval.opval = newOP(OP_PADANY, 0); |
2021 | yylval.opval->op_targ = tmp; | |
2022 | return PRIVATEREF; | |
2023 | } | |
bbce6d69 | 2024 | } |
2025 | ||
02aa26ce NT |
2026 | /* |
2027 | Whine if they've said @foo in a doublequoted string, | |
2028 | and @foo isn't a variable we can find in the symbol | |
2029 | table. | |
2030 | */ | |
3280af22 NIS |
2031 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2032 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2033 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2034 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2035 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2036 | } |
2037 | ||
02aa26ce | 2038 | /* build ops for a bareword */ |
3280af22 | 2039 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2040 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2041 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2042 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2043 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2044 | : SVt_PVHV)); |
2045 | return WORD; | |
2046 | } | |
2047 | ||
02aa26ce NT |
2048 | /* no identifier pending identification */ |
2049 | ||
3280af22 | 2050 | switch (PL_lex_state) { |
79072805 LW |
2051 | #ifdef COMMENTARY |
2052 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2053 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2054 | break; | |
2055 | #endif | |
2056 | ||
09bef843 | 2057 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2058 | case LEX_KNOWNEXT: |
3280af22 NIS |
2059 | PL_nexttoke--; |
2060 | yylval = PL_nextval[PL_nexttoke]; | |
2061 | if (!PL_nexttoke) { | |
2062 | PL_lex_state = PL_lex_defer; | |
2063 | PL_expect = PL_lex_expect; | |
2064 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2065 | } |
3280af22 | 2066 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2067 | |
02aa26ce | 2068 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2069 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2070 | */ |
79072805 LW |
2071 | case LEX_INTERPCASEMOD: |
2072 | #ifdef DEBUGGING | |
3280af22 | 2073 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2074 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2075 | #endif |
02aa26ce | 2076 | /* handle \E or end of string */ |
3280af22 | 2077 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2078 | char oldmod; |
02aa26ce NT |
2079 | |
2080 | /* if at a \E */ | |
3280af22 NIS |
2081 | if (PL_lex_casemods) { |
2082 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2083 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2084 | |
3280af22 NIS |
2085 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2086 | PL_bufptr += 2; | |
2087 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2088 | } |
79072805 LW |
2089 | return ')'; |
2090 | } | |
3280af22 NIS |
2091 | if (PL_bufptr != PL_bufend) |
2092 | PL_bufptr += 2; | |
2093 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2094 | return yylex(); |
79072805 LW |
2095 | } |
2096 | else { | |
3280af22 | 2097 | s = PL_bufptr + 1; |
79072805 LW |
2098 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2099 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2100 | if (strchr("LU", *s) && |
3280af22 | 2101 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2102 | { |
3280af22 | 2103 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2104 | return ')'; |
2105 | } | |
3280af22 NIS |
2106 | if (PL_lex_casemods > 10) { |
2107 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2108 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2109 | SAVEFREEPV(newlb); |
3280af22 | 2110 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2111 | } |
2112 | } | |
3280af22 NIS |
2113 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2114 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2115 | PL_lex_state = LEX_INTERPCONCAT; | |
2116 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2117 | force_next('('); |
2118 | if (*s == 'l') | |
3280af22 | 2119 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2120 | else if (*s == 'u') |
3280af22 | 2121 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2122 | else if (*s == 'L') |
3280af22 | 2123 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2124 | else if (*s == 'U') |
3280af22 | 2125 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2126 | else if (*s == 'Q') |
3280af22 | 2127 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2128 | else |
cea2e8a9 | 2129 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2130 | PL_bufptr = s + 1; |
79072805 | 2131 | force_next(FUNC); |
3280af22 NIS |
2132 | if (PL_lex_starts) { |
2133 | s = PL_bufptr; | |
2134 | PL_lex_starts = 0; | |
79072805 LW |
2135 | Aop(OP_CONCAT); |
2136 | } | |
2137 | else | |
cea2e8a9 | 2138 | return yylex(); |
79072805 LW |
2139 | } |
2140 | ||
55497cff | 2141 | case LEX_INTERPPUSH: |
2142 | return sublex_push(); | |
2143 | ||
79072805 | 2144 | case LEX_INTERPSTART: |
3280af22 | 2145 | if (PL_bufptr == PL_bufend) |
79072805 | 2146 | return sublex_done(); |
3280af22 NIS |
2147 | PL_expect = XTERM; |
2148 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2149 | PL_lex_state = LEX_INTERPNORMAL; | |
2150 | if (PL_lex_dojoin) { | |
2151 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2152 | force_next(','); |
554b3eca | 2153 | #ifdef USE_THREADS |
533c011a NIS |
2154 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2155 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2156 | force_next(PRIVATEREF); |
2157 | #else | |
a0d0e21e | 2158 | force_ident("\"", '$'); |
554b3eca | 2159 | #endif /* USE_THREADS */ |
3280af22 | 2160 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2161 | force_next('$'); |
3280af22 | 2162 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2163 | force_next('('); |
3280af22 | 2164 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2165 | force_next(FUNC); |
2166 | } | |
3280af22 NIS |
2167 | if (PL_lex_starts++) { |
2168 | s = PL_bufptr; | |
79072805 LW |
2169 | Aop(OP_CONCAT); |
2170 | } | |
cea2e8a9 | 2171 | return yylex(); |
79072805 LW |
2172 | |
2173 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2174 | if (intuit_more(PL_bufptr)) { |
2175 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2176 | break; |
2177 | } | |
2178 | /* FALL THROUGH */ | |
2179 | ||
2180 | case LEX_INTERPEND: | |
3280af22 NIS |
2181 | if (PL_lex_dojoin) { |
2182 | PL_lex_dojoin = FALSE; | |
2183 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2184 | return ')'; |
2185 | } | |
43a16006 | 2186 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2187 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2188 | { |
e9fa98b2 | 2189 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2190 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2191 | PL_lex_repl = Nullsv; |
2192 | } | |
79072805 LW |
2193 | /* FALLTHROUGH */ |
2194 | case LEX_INTERPCONCAT: | |
2195 | #ifdef DEBUGGING | |
3280af22 | 2196 | if (PL_lex_brackets) |
cea2e8a9 | 2197 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2198 | #endif |
3280af22 | 2199 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2200 | return sublex_done(); |
2201 | ||
3280af22 NIS |
2202 | if (SvIVX(PL_linestr) == '\'') { |
2203 | SV *sv = newSVsv(PL_linestr); | |
2204 | if (!PL_lex_inpat) | |
76e3520e | 2205 | sv = tokeq(sv); |
3280af22 | 2206 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2207 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2208 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2209 | s = PL_bufend; |
79072805 LW |
2210 | } |
2211 | else { | |
3280af22 | 2212 | s = scan_const(PL_bufptr); |
79072805 | 2213 | if (*s == '\\') |
3280af22 | 2214 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2215 | else |
3280af22 | 2216 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2217 | } |
2218 | ||
3280af22 NIS |
2219 | if (s != PL_bufptr) { |
2220 | PL_nextval[PL_nexttoke] = yylval; | |
2221 | PL_expect = XTERM; | |
79072805 | 2222 | force_next(THING); |
3280af22 | 2223 | if (PL_lex_starts++) |
79072805 LW |
2224 | Aop(OP_CONCAT); |
2225 | else { | |
3280af22 | 2226 | PL_bufptr = s; |
cea2e8a9 | 2227 | return yylex(); |
79072805 LW |
2228 | } |
2229 | } | |
2230 | ||
cea2e8a9 | 2231 | return yylex(); |
a0d0e21e | 2232 | case LEX_FORMLINE: |
3280af22 NIS |
2233 | PL_lex_state = LEX_NORMAL; |
2234 | s = scan_formline(PL_bufptr); | |
2235 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2236 | goto rightbracket; |
2237 | OPERATOR(';'); | |
79072805 LW |
2238 | } |
2239 | ||
3280af22 NIS |
2240 | s = PL_bufptr; |
2241 | PL_oldoldbufptr = PL_oldbufptr; | |
2242 | PL_oldbufptr = s; | |
79072805 | 2243 | DEBUG_p( { |
3280af22 | 2244 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[PL_expect], s); |
79072805 | 2245 | } ) |
463ee0b2 LW |
2246 | |
2247 | retry: | |
378cc40b LW |
2248 | switch (*s) { |
2249 | default: | |
834a4ddd LW |
2250 | if (isIDFIRST_lazy(s)) |
2251 | goto keylookup; | |
cea2e8a9 | 2252 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2253 | case 4: |
2254 | case 26: | |
2255 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2256 | case 0: |
3280af22 NIS |
2257 | if (!PL_rsfp) { |
2258 | PL_last_uni = 0; | |
2259 | PL_last_lop = 0; | |
2260 | if (PL_lex_brackets) | |
d98d5fff | 2261 | yyerror("Missing right curly or square bracket"); |
79072805 | 2262 | TOKEN(0); |
463ee0b2 | 2263 | } |
3280af22 | 2264 | if (s++ < PL_bufend) |
a687059c | 2265 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2266 | PL_last_uni = 0; |
2267 | PL_last_lop = 0; | |
2268 | if (!PL_in_eval && !PL_preambled) { | |
2269 | PL_preambled = TRUE; | |
2270 | sv_setpv(PL_linestr,incl_perldb()); | |
2271 | if (SvCUR(PL_linestr)) | |
2272 | sv_catpv(PL_linestr,";"); | |
2273 | if (PL_preambleav){ | |
2274 | while(AvFILLp(PL_preambleav) >= 0) { | |
2275 | SV *tmpsv = av_shift(PL_preambleav); | |
2276 | sv_catsv(PL_linestr, tmpsv); | |
2277 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2278 | sv_free(tmpsv); |
2279 | } | |
3280af22 NIS |
2280 | sv_free((SV*)PL_preambleav); |
2281 | PL_preambleav = NULL; | |
91b7def8 | 2282 | } |
3280af22 NIS |
2283 | if (PL_minus_n || PL_minus_p) { |
2284 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2285 | if (PL_minus_l) | |
2286 | sv_catpv(PL_linestr,"chomp;"); | |
2287 | if (PL_minus_a) { | |
8fd239a7 CS |
2288 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2289 | if (gv) | |
2290 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2291 | if (PL_minus_F) { |
2292 | if (strchr("/'\"", *PL_splitstr) | |
2293 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2294 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2295 | else { |
2296 | char delim; | |
2297 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2298 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2299 | delim = *s; |
cea2e8a9 | 2300 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2301 | "q" + (delim == '\''), delim); |
3280af22 | 2302 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2303 | if (*s == '\\') |
3280af22 NIS |
2304 | sv_catpvn(PL_linestr, "\\", 1); |
2305 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2306 | } |
cea2e8a9 | 2307 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2308 | } |
2304df62 AD |
2309 | } |
2310 | else | |
3280af22 | 2311 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2312 | } |
79072805 | 2313 | } |
3280af22 NIS |
2314 | sv_catpv(PL_linestr, "\n"); |
2315 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2316 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2317 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2318 | SV *sv = NEWSV(85,0); |
2319 | ||
2320 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
2321 | sv_setsv(sv,PL_linestr); |
2322 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a0d0e21e | 2323 | } |
79072805 | 2324 | goto retry; |
a687059c | 2325 | } |
e929a76b | 2326 | do { |
3280af22 | 2327 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2328 | fake_eof: |
3280af22 NIS |
2329 | if (PL_rsfp) { |
2330 | if (PL_preprocess && !PL_in_eval) | |
2331 | (void)PerlProc_pclose(PL_rsfp); | |
2332 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2333 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2334 | else |
3280af22 NIS |
2335 | (void)PerlIO_close(PL_rsfp); |
2336 | PL_rsfp = Nullfp; | |
4a9ae47a | 2337 | PL_doextract = FALSE; |
395c3793 | 2338 | } |
3280af22 NIS |
2339 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2340 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2341 | sv_catpv(PL_linestr,";}"); | |
2342 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2343 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2344 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2345 | goto retry; |
2346 | } | |
3280af22 NIS |
2347 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2348 | sv_setpv(PL_linestr,""); | |
79072805 | 2349 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2350 | } |
3280af22 | 2351 | if (PL_doextract) { |
a0d0e21e | 2352 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2353 | PL_doextract = FALSE; |
a0d0e21e LW |
2354 | |
2355 | /* Incest with pod. */ | |
2356 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2357 | sv_setpv(PL_linestr, ""); |
2358 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2359 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2360 | PL_doextract = FALSE; | |
a0d0e21e LW |
2361 | } |
2362 | } | |
463ee0b2 | 2363 | incline(s); |
3280af22 NIS |
2364 | } while (PL_doextract); |
2365 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2366 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2367 | SV *sv = NEWSV(85,0); |
a687059c | 2368 | |
93a17b20 | 2369 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
2370 | sv_setsv(sv,PL_linestr); |
2371 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a687059c | 2372 | } |
3280af22 NIS |
2373 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
2374 | if (PL_curcop->cop_line == 1) { | |
2375 | while (s < PL_bufend && isSPACE(*s)) | |
79072805 | 2376 | s++; |
a0d0e21e | 2377 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2378 | s++; |
44a8e56a | 2379 | d = Nullch; |
3280af22 | 2380 | if (!PL_in_eval) { |
44a8e56a | 2381 | if (*s == '#' && *(s+1) == '!') |
2382 | d = s + 2; | |
2383 | #ifdef ALTERNATE_SHEBANG | |
2384 | else { | |
2385 | static char as[] = ALTERNATE_SHEBANG; | |
2386 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2387 | d = s + (sizeof(as) - 1); | |
2388 | } | |
2389 | #endif /* ALTERNATE_SHEBANG */ | |
2390 | } | |
2391 | if (d) { | |
b8378b72 | 2392 | char *ipath; |
774d564b | 2393 | char *ipathend; |
b8378b72 | 2394 | |
774d564b | 2395 | while (isSPACE(*d)) |
b8378b72 CS |
2396 | d++; |
2397 | ipath = d; | |
774d564b | 2398 | while (*d && !isSPACE(*d)) |
2399 | d++; | |
2400 | ipathend = d; | |
2401 | ||
2402 | #ifdef ARG_ZERO_IS_SCRIPT | |
2403 | if (ipathend > ipath) { | |
2404 | /* | |
2405 | * HP-UX (at least) sets argv[0] to the script name, | |
2406 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2407 | * at least, set argv[0] to the basename of the Perl | |
2408 | * interpreter. So, having found "#!", we'll set it right. | |
2409 | */ | |
2410 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2411 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
6b88bc9c | 2412 | if (sv_eq(x, GvSV(PL_curcop->cop_filegv))) { |
774d564b | 2413 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2414 | SvSETMAGIC(x); |
2415 | } | |
774d564b | 2416 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2417 | } |
774d564b | 2418 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2419 | |
2420 | /* | |
2421 | * Look for options. | |
2422 | */ | |
748a9306 LW |
2423 | d = instr(s,"perl -"); |
2424 | if (!d) | |
2425 | d = instr(s,"perl"); | |
44a8e56a | 2426 | #ifdef ALTERNATE_SHEBANG |
2427 | /* | |
2428 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2429 | * character that can be part of a Perl expression, then if | |
2430 | * we see it but not "perl", we're probably looking at the | |
2431 | * start of Perl code, not a request to hand off to some | |
2432 | * other interpreter. Similarly, if "perl" is there, but | |
2433 | * not in the first 'word' of the line, we assume the line | |
2434 | * contains the start of the Perl program. | |
44a8e56a | 2435 | */ |
2436 | if (d && *s != '#') { | |
774d564b | 2437 | char *c = ipath; |
44a8e56a | 2438 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2439 | c++; | |
2440 | if (c < d) | |
2441 | d = Nullch; /* "perl" not in first word; ignore */ | |
2442 | else | |
2443 | *s = '#'; /* Don't try to parse shebang line */ | |
2444 | } | |
774d564b | 2445 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2446 | if (!d && |
44a8e56a | 2447 | *s == '#' && |
774d564b | 2448 | ipathend > ipath && |
3280af22 | 2449 | !PL_minus_c && |
748a9306 | 2450 | !instr(s,"indir") && |
3280af22 | 2451 | instr(PL_origargv[0],"perl")) |
748a9306 | 2452 | { |
9f68db38 | 2453 | char **newargv; |
9f68db38 | 2454 | |
774d564b | 2455 | *ipathend = '\0'; |
2456 | s = ipathend + 1; | |
3280af22 | 2457 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2458 | s++; |
3280af22 NIS |
2459 | if (s < PL_bufend) { |
2460 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2461 | newargv[1] = s; |
3280af22 | 2462 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2463 | s++; |
2464 | *s = '\0'; | |
3280af22 | 2465 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2466 | } |
2467 | else | |
3280af22 | 2468 | newargv = PL_origargv; |
774d564b | 2469 | newargv[0] = ipath; |
80252599 | 2470 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2471 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2472 | } |
748a9306 | 2473 | if (d) { |
3280af22 NIS |
2474 | U32 oldpdb = PL_perldb; |
2475 | bool oldn = PL_minus_n; | |
2476 | bool oldp = PL_minus_p; | |
748a9306 LW |
2477 | |
2478 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2479 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2480 | |
2481 | if (*d++ == '-') { | |
8cc95fdb | 2482 | do { |
2483 | if (*d == 'M' || *d == 'm') { | |
2484 | char *m = d; | |
2485 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2486 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2487 | (int)(d - m), m); |
2488 | } | |
2489 | d = moreswitches(d); | |
2490 | } while (d); | |
84902520 | 2491 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2492 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2493 | /* if we have already added "LINE: while (<>) {", |
2494 | we must not do it again */ | |
748a9306 | 2495 | { |
3280af22 NIS |
2496 | sv_setpv(PL_linestr, ""); |
2497 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2498 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2499 | PL_preambled = FALSE; | |
84902520 | 2500 | if (PERLDB_LINE) |
3280af22 | 2501 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2502 | goto retry; |
2503 | } | |
a0d0e21e | 2504 | } |
79072805 | 2505 | } |
9f68db38 | 2506 | } |
79072805 | 2507 | } |
3280af22 NIS |
2508 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2509 | PL_bufptr = s; | |
2510 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2511 | return yylex(); |
ae986130 | 2512 | } |
378cc40b | 2513 | goto retry; |
4fdae800 | 2514 | case '\r': |
6a27c188 | 2515 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2516 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2517 | Perl_croak(aTHX_ | |
54310121 | 2518 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2519 | #endif |
4fdae800 | 2520 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2521 | s++; |
2522 | goto retry; | |
378cc40b | 2523 | case '#': |
e929a76b | 2524 | case '\n': |
3280af22 NIS |
2525 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2526 | d = PL_bufend; | |
a687059c | 2527 | while (s < d && *s != '\n') |
378cc40b | 2528 | s++; |
0f85fab0 | 2529 | if (s < d) |
378cc40b | 2530 | s++; |
463ee0b2 | 2531 | incline(s); |
3280af22 NIS |
2532 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2533 | PL_bufptr = s; | |
2534 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2535 | return yylex(); |
a687059c | 2536 | } |
378cc40b | 2537 | } |
a687059c | 2538 | else { |
378cc40b | 2539 | *s = '\0'; |
3280af22 | 2540 | PL_bufend = s; |
a687059c | 2541 | } |
378cc40b LW |
2542 | goto retry; |
2543 | case '-': | |
79072805 | 2544 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2545 | s++; |
3280af22 | 2546 | PL_bufptr = s; |
748a9306 LW |
2547 | tmp = *s++; |
2548 | ||
3280af22 | 2549 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2550 | s++; |
2551 | ||
2552 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2553 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2554 | OPERATOR('-'); /* unary minus */ |
2555 | } | |
3280af22 NIS |
2556 | PL_last_uni = PL_oldbufptr; |
2557 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2558 | switch (tmp) { |
79072805 LW |
2559 | case 'r': FTST(OP_FTEREAD); |
2560 | case 'w': FTST(OP_FTEWRITE); | |
2561 | case 'x': FTST(OP_FTEEXEC); | |
2562 | case 'o': FTST(OP_FTEOWNED); | |
2563 | case 'R': FTST(OP_FTRREAD); | |
2564 | case 'W': FTST(OP_FTRWRITE); | |
2565 | case 'X': FTST(OP_FTREXEC); | |
2566 | case 'O': FTST(OP_FTROWNED); | |
2567 | case 'e': FTST(OP_FTIS); | |
2568 | case 'z': FTST(OP_FTZERO); | |
2569 | case 's': FTST(OP_FTSIZE); | |
2570 | case 'f': FTST(OP_FTFILE); | |
2571 | case 'd': FTST(OP_FTDIR); | |
2572 | case 'l': FTST(OP_FTLINK); | |
2573 | case 'p': FTST(OP_FTPIPE); | |
2574 | case 'S': FTST(OP_FTSOCK); | |
2575 | case 'u': FTST(OP_FTSUID); | |
2576 | case 'g': FTST(OP_FTSGID); | |
2577 | case 'k': FTST(OP_FTSVTX); | |
2578 | case 'b': FTST(OP_FTBLK); | |
2579 | case 'c': FTST(OP_FTCHR); | |
2580 | case 't': FTST(OP_FTTTY); | |
2581 | case 'T': FTST(OP_FTTEXT); | |
2582 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2583 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2584 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2585 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2586 | default: |
cea2e8a9 | 2587 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2588 | break; |
2589 | } | |
2590 | } | |
a687059c LW |
2591 | tmp = *s++; |
2592 | if (*s == tmp) { | |
2593 | s++; | |
3280af22 | 2594 | if (PL_expect == XOPERATOR) |
79072805 LW |
2595 | TERM(POSTDEC); |
2596 | else | |
2597 | OPERATOR(PREDEC); | |
2598 | } | |
2599 | else if (*s == '>') { | |
2600 | s++; | |
2601 | s = skipspace(s); | |
834a4ddd | 2602 | if (isIDFIRST_lazy(s)) { |
a0d0e21e | 2603 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2604 | TOKEN(ARROW); |
79072805 | 2605 | } |
748a9306 LW |
2606 | else if (*s == '$') |
2607 | OPERATOR(ARROW); | |
463ee0b2 | 2608 | else |
748a9306 | 2609 | TERM(ARROW); |
a687059c | 2610 | } |
3280af22 | 2611 | if (PL_expect == XOPERATOR) |
79072805 LW |
2612 | Aop(OP_SUBTRACT); |
2613 | else { | |
3280af22 | 2614 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2615 | check_uni(); |
79072805 | 2616 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2617 | } |
79072805 | 2618 | |
378cc40b | 2619 | case '+': |
a687059c LW |
2620 | tmp = *s++; |
2621 | if (*s == tmp) { | |
378cc40b | 2622 | s++; |
3280af22 | 2623 | if (PL_expect == XOPERATOR) |
79072805 LW |
2624 | TERM(POSTINC); |
2625 | else | |
2626 | OPERATOR(PREINC); | |
378cc40b | 2627 | } |
3280af22 | 2628 | if (PL_expect == XOPERATOR) |
79072805 LW |
2629 | Aop(OP_ADD); |
2630 | else { | |
3280af22 | 2631 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2632 | check_uni(); |
a687059c | 2633 | OPERATOR('+'); |
2f3197b3 | 2634 | } |
a687059c | 2635 | |
378cc40b | 2636 | case '*': |
3280af22 NIS |
2637 | if (PL_expect != XOPERATOR) { |
2638 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2639 | PL_expect = XOPERATOR; | |
2640 | force_ident(PL_tokenbuf, '*'); | |
2641 | if (!*PL_tokenbuf) | |
a0d0e21e | 2642 | PREREF('*'); |
79072805 | 2643 | TERM('*'); |
a687059c | 2644 | } |
79072805 LW |
2645 | s++; |
2646 | if (*s == '*') { | |
a687059c | 2647 | s++; |
79072805 | 2648 | PWop(OP_POW); |
a687059c | 2649 | } |
79072805 LW |
2650 | Mop(OP_MULTIPLY); |
2651 | ||
378cc40b | 2652 | case '%': |
3280af22 | 2653 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2654 | ++s; |
2655 | Mop(OP_MODULO); | |
a687059c | 2656 | } |
3280af22 NIS |
2657 | PL_tokenbuf[0] = '%'; |
2658 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2659 | if (!PL_tokenbuf[1]) { | |
2660 | if (s == PL_bufend) | |
bbce6d69 | 2661 | yyerror("Final % should be \\% or %name"); |
2662 | PREREF('%'); | |
a687059c | 2663 | } |
3280af22 | 2664 | PL_pending_ident = '%'; |
bbce6d69 | 2665 | TERM('%'); |
a687059c | 2666 | |
378cc40b | 2667 | case '^': |
79072805 | 2668 | s++; |
a0d0e21e | 2669 | BOop(OP_BIT_XOR); |
79072805 | 2670 | case '[': |
3280af22 | 2671 | PL_lex_brackets++; |
79072805 | 2672 | /* FALL THROUGH */ |
378cc40b | 2673 | case '~': |
378cc40b | 2674 | case ',': |
378cc40b LW |
2675 | tmp = *s++; |
2676 | OPERATOR(tmp); | |
a0d0e21e LW |
2677 | case ':': |
2678 | if (s[1] == ':') { | |
2679 | len = 0; | |
2680 | goto just_a_word; | |
2681 | } | |
2682 | s++; | |
09bef843 SB |
2683 | switch (PL_expect) { |
2684 | OP *attrs; | |
2685 | case XOPERATOR: | |
2686 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2687 | break; | |
2688 | PL_bufptr = s; /* update in case we back off */ | |
2689 | goto grabattrs; | |
2690 | case XATTRBLOCK: | |
2691 | PL_expect = XBLOCK; | |
2692 | goto grabattrs; | |
2693 | case XATTRTERM: | |
2694 | PL_expect = XTERMBLOCK; | |
2695 | grabattrs: | |
2696 | s = skipspace(s); | |
2697 | attrs = Nullop; | |
2698 | while (isIDFIRST_lazy(s)) { | |
2699 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
2700 | if (*d == '(') { | |
2701 | d = scan_str(d,TRUE,TRUE); | |
2702 | if (!d) { | |
2703 | if (PL_lex_stuff) { | |
2704 | SvREFCNT_dec(PL_lex_stuff); | |
2705 | PL_lex_stuff = Nullsv; | |
2706 | } | |
2707 | /* MUST advance bufptr here to avoid bogus | |
2708 | "at end of line" context messages from yyerror(). | |
2709 | */ | |
2710 | PL_bufptr = s + len; | |
2711 | yyerror("Unterminated attribute parameter in attribute list"); | |
2712 | if (attrs) | |
2713 | op_free(attrs); | |
2714 | return 0; /* EOF indicator */ | |
2715 | } | |
2716 | } | |
2717 | if (PL_lex_stuff) { | |
2718 | SV *sv = newSVpvn(s, len); | |
2719 | sv_catsv(sv, PL_lex_stuff); | |
2720 | attrs = append_elem(OP_LIST, attrs, | |
2721 | newSVOP(OP_CONST, 0, sv)); | |
2722 | SvREFCNT_dec(PL_lex_stuff); | |
2723 | PL_lex_stuff = Nullsv; | |
2724 | } | |
2725 | else { | |
2726 | attrs = append_elem(OP_LIST, attrs, | |
2727 | newSVOP(OP_CONST, 0, | |
2728 | newSVpvn(s, len))); | |
2729 | } | |
2730 | s = skipspace(d); | |
2731 | while (*s == ',') | |
2732 | s = skipspace(s+1); | |
2733 | } | |
2734 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}' for vi */ | |
2735 | if (*s != ';' && *s != tmp) { | |
2736 | char q = ((*s == '\'') ? '"' : '\''); | |
2737 | /* If here for an expression, and parsed no attrs, back off. */ | |
2738 | if (tmp == '=' && !attrs) { | |
2739 | s = PL_bufptr; | |
2740 | break; | |
2741 | } | |
2742 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2743 | context messages from yyerror(). | |
2744 | */ | |
2745 | PL_bufptr = s; | |
2746 | if (!*s) | |
2747 | yyerror("Unterminated attribute list"); | |
2748 | else | |
2749 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2750 | q, *s, q)); | |
2751 | if (attrs) | |
2752 | op_free(attrs); | |
2753 | OPERATOR(':'); | |
2754 | } | |
2755 | if (attrs) { | |
2756 | PL_nextval[PL_nexttoke].opval = attrs; | |
2757 | force_next(THING); | |
2758 | } | |
2759 | TOKEN(COLONATTR); | |
2760 | } | |
a0d0e21e | 2761 | OPERATOR(':'); |
8990e307 LW |
2762 | case '(': |
2763 | s++; | |
3280af22 NIS |
2764 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2765 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2766 | else |
3280af22 | 2767 | PL_expect = XTERM; |
a0d0e21e | 2768 | TOKEN('('); |
378cc40b | 2769 | case ';': |
3280af22 NIS |
2770 | if (PL_curcop->cop_line < PL_copline) |
2771 | PL_copline = PL_curcop->cop_line; | |
378cc40b LW |
2772 | tmp = *s++; |
2773 | OPERATOR(tmp); | |
2774 | case ')': | |
378cc40b | 2775 | tmp = *s++; |
16d20bd9 AD |
2776 | s = skipspace(s); |
2777 | if (*s == '{') | |
2778 | PREBLOCK(tmp); | |
378cc40b | 2779 | TERM(tmp); |
79072805 LW |
2780 | case ']': |
2781 | s++; | |
3280af22 | 2782 | if (PL_lex_brackets <= 0) |
d98d5fff | 2783 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2784 | else |
3280af22 NIS |
2785 | --PL_lex_brackets; |
2786 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2787 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2788 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2789 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2790 | } |
2791 | } | |
4633a7c4 | 2792 | TERM(']'); |
79072805 LW |
2793 | case '{': |
2794 | leftbracket: | |
79072805 | 2795 | s++; |
3280af22 NIS |
2796 | if (PL_lex_brackets > 100) { |
2797 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2798 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2799 | SAVEFREEPV(newlb); |
3280af22 | 2800 | PL_lex_brackstack = newlb; |
8990e307 LW |
2801 | } |
2802 | } | |
3280af22 | 2803 | switch (PL_expect) { |
a0d0e21e | 2804 | case XTERM: |
3280af22 | 2805 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2806 | s--; |
2807 | PRETERMBLOCK(DO); | |
2808 | } | |
3280af22 NIS |
2809 | if (PL_oldoldbufptr == PL_last_lop) |
2810 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2811 | else |
3280af22 | 2812 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2813 | OPERATOR(HASHBRACK); |
a0d0e21e | 2814 | case XOPERATOR: |
3280af22 | 2815 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2816 | s++; |
44a8e56a | 2817 | d = s; |
3280af22 NIS |
2818 | PL_tokenbuf[0] = '\0'; |
2819 | if (d < PL_bufend && *d == '-') { | |
2820 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2821 | d++; |
3280af22 | 2822 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2823 | d++; |
2824 | } | |
834a4ddd | 2825 | if (d < PL_bufend && isIDFIRST_lazy(d)) { |
3280af22 | 2826 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2827 | FALSE, &len); |
3280af22 | 2828 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2829 | d++; |
2830 | if (*d == '}') { | |
3280af22 | 2831 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2832 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2833 | if (minus) | |
2834 | force_next('-'); | |
748a9306 LW |
2835 | } |
2836 | } | |
2837 | /* FALL THROUGH */ | |
09bef843 | 2838 | case XATTRBLOCK: |
748a9306 | 2839 | case XBLOCK: |
3280af22 NIS |
2840 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2841 | PL_expect = XSTATE; | |
a0d0e21e | 2842 | break; |
09bef843 | 2843 | case XATTRTERM: |
a0d0e21e | 2844 | case XTERMBLOCK: |
3280af22 NIS |
2845 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2846 | PL_expect = XSTATE; | |
a0d0e21e LW |
2847 | break; |
2848 | default: { | |
2849 | char *t; | |
3280af22 NIS |
2850 | if (PL_oldoldbufptr == PL_last_lop) |
2851 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2852 | else |
3280af22 | 2853 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2854 | s = skipspace(s); |
09ecc4b6 | 2855 | if (*s == '}') |
a0d0e21e | 2856 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2857 | /* This hack serves to disambiguate a pair of curlies |
2858 | * as being a block or an anon hash. Normally, expectation | |
2859 | * determines that, but in cases where we're not in a | |
2860 | * position to expect anything in particular (like inside | |
2861 | * eval"") we have to resolve the ambiguity. This code | |
2862 | * covers the case where the first term in the curlies is a | |
2863 | * quoted string. Most other cases need to be explicitly | |
2864 | * disambiguated by prepending a `+' before the opening | |
2865 | * curly in order to force resolution as an anon hash. | |
2866 | * | |
2867 | * XXX should probably propagate the outer expectation | |
2868 | * into eval"" to rely less on this hack, but that could | |
2869 | * potentially break current behavior of eval"". | |
2870 | * GSAR 97-07-21 | |
2871 | */ | |
2872 | t = s; | |
2873 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2874 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2875 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2876 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2877 | t++; | |
2878 | t++; | |
a0d0e21e | 2879 | } |
b8a4b1be | 2880 | else if (*s == 'q') { |
3280af22 | 2881 | if (++t < PL_bufend |
b8a4b1be | 2882 | && (!isALNUM(*t) |
3280af22 | 2883 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
b8a4b1be GS |
2884 | && !isALNUM(*t)))) { |
2885 | char *tmps; | |
2886 | char open, close, term; | |
2887 | I32 brackets = 1; | |
2888 | ||
3280af22 | 2889 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2890 | t++; |
2891 | term = *t; | |
2892 | open = term; | |
2893 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2894 | term = tmps[5]; | |
2895 | close = term; | |
2896 | if (open == close) | |
3280af22 NIS |
2897 | for (t++; t < PL_bufend; t++) { |
2898 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2899 | t++; |
6d07e5e9 | 2900 | else if (*t == open) |
b8a4b1be GS |
2901 | break; |
2902 | } | |
2903 | else | |
3280af22 NIS |
2904 | for (t++; t < PL_bufend; t++) { |
2905 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2906 | t++; |
6d07e5e9 | 2907 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2908 | break; |
2909 | else if (*t == open) | |
2910 | brackets++; | |
2911 | } | |
2912 | } | |
2913 | t++; | |
a0d0e21e | 2914 | } |
834a4ddd LW |
2915 | else if (isIDFIRST_lazy(s)) { |
2916 | for (t++; t < PL_bufend && isALNUM_lazy(t); t++) ; | |
a0d0e21e | 2917 | } |
3280af22 | 2918 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2919 | t++; |
b8a4b1be GS |
2920 | /* if comma follows first term, call it an anon hash */ |
2921 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2922 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2923 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2924 | OPERATOR(HASHBRACK); |
3280af22 | 2925 | if (PL_expect == XREF) |
4e4e412b | 2926 | PL_expect = XTERM; |
a0d0e21e | 2927 | else { |
3280af22 NIS |
2928 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2929 | PL_expect = XSTATE; | |
a0d0e21e | 2930 | } |
8990e307 | 2931 | } |
a0d0e21e | 2932 | break; |
463ee0b2 | 2933 | } |
3280af22 | 2934 | yylval.ival = PL_curcop->cop_line; |
79072805 | 2935 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2936 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2937 | TOKEN('{'); |
378cc40b | 2938 | case '}': |
79072805 LW |
2939 | rightbracket: |
2940 | s++; | |
3280af22 | 2941 | if (PL_lex_brackets <= 0) |
d98d5fff | 2942 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 2943 | else |
3280af22 NIS |
2944 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2945 | if (PL_lex_brackets < PL_lex_formbrack) | |
2946 | PL_lex_formbrack = 0; | |
2947 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2948 | if (PL_lex_brackets == 0) { | |
2949 | if (PL_lex_fakebrack) { | |
2950 | PL_lex_state = LEX_INTERPEND; | |
2951 | PL_bufptr = s; | |
cea2e8a9 | 2952 | return yylex(); /* ignore fake brackets */ |
79072805 | 2953 | } |
fa83b5b6 | 2954 | if (*s == '-' && s[1] == '>') |
3280af22 | 2955 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 2956 | else if (*s != '[' && *s != '{') |
3280af22 | 2957 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2958 | } |
2959 | } | |
3280af22 NIS |
2960 | if (PL_lex_brackets < PL_lex_fakebrack) { |
2961 | PL_bufptr = s; | |
2962 | PL_lex_fakebrack = 0; | |
cea2e8a9 | 2963 | return yylex(); /* ignore fake brackets */ |
748a9306 | 2964 | } |
79072805 LW |
2965 | force_next('}'); |
2966 | TOKEN(';'); | |
378cc40b LW |
2967 | case '&': |
2968 | s++; | |
2969 | tmp = *s++; | |
2970 | if (tmp == '&') | |
a0d0e21e | 2971 | AOPERATOR(ANDAND); |
378cc40b | 2972 | s--; |
3280af22 | 2973 | if (PL_expect == XOPERATOR) { |
834a4ddd | 2974 | if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) { |
3280af22 | 2975 | PL_curcop->cop_line--; |
cea2e8a9 | 2976 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
3280af22 | 2977 | PL_curcop->cop_line++; |
463ee0b2 | 2978 | } |
79072805 | 2979 | BAop(OP_BIT_AND); |
463ee0b2 | 2980 | } |
79072805 | 2981 | |
3280af22 NIS |
2982 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
2983 | if (*PL_tokenbuf) { | |
2984 | PL_expect = XOPERATOR; | |
2985 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 2986 | } |
79072805 LW |
2987 | else |
2988 | PREREF('&'); | |
c07a80fd | 2989 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2990 | TERM('&'); |
2991 | ||
378cc40b LW |
2992 | case '|': |
2993 | s++; | |
2994 | tmp = *s++; | |
2995 | if (tmp == '|') | |
a0d0e21e | 2996 | AOPERATOR(OROR); |
378cc40b | 2997 | s--; |
79072805 | 2998 | BOop(OP_BIT_OR); |
378cc40b LW |
2999 | case '=': |
3000 | s++; | |
3001 | tmp = *s++; | |
3002 | if (tmp == '=') | |
79072805 LW |
3003 | Eop(OP_EQ); |
3004 | if (tmp == '>') | |
3005 | OPERATOR(','); | |
378cc40b | 3006 | if (tmp == '~') |
79072805 | 3007 | PMop(OP_MATCH); |
599cee73 | 3008 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3009 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3010 | s--; |
3280af22 NIS |
3011 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3012 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3013 | { |
3280af22 NIS |
3014 | if (PL_in_eval && !PL_rsfp) { |
3015 | d = PL_bufend; | |
a5f75d66 AD |
3016 | while (s < d) { |
3017 | if (*s++ == '\n') { | |
3018 | incline(s); | |
3019 | if (strnEQ(s,"=cut",4)) { | |
3020 | s = strchr(s,'\n'); | |
3021 | if (s) | |
3022 | s++; | |
3023 | else | |
3024 | s = d; | |
3025 | incline(s); | |
3026 | goto retry; | |
3027 | } | |
3028 | } | |
3029 | } | |
3030 | goto retry; | |
3031 | } | |
3280af22 NIS |
3032 | s = PL_bufend; |
3033 | PL_doextract = TRUE; | |
a0d0e21e LW |
3034 | goto retry; |
3035 | } | |
3280af22 | 3036 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3037 | char *t; |
51882d45 | 3038 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3039 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3040 | #else |
3041 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3042 | #endif | |
a0d0e21e LW |
3043 | if (*t == '\n' || *t == '#') { |
3044 | s--; | |
3280af22 | 3045 | PL_expect = XBLOCK; |
a0d0e21e LW |
3046 | goto leftbracket; |
3047 | } | |
79072805 | 3048 | } |
a0d0e21e LW |
3049 | yylval.ival = 0; |
3050 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3051 | case '!': |
3052 | s++; | |
3053 | tmp = *s++; | |
3054 | if (tmp == '=') | |
79072805 | 3055 | Eop(OP_NE); |
378cc40b | 3056 | if (tmp == '~') |
79072805 | 3057 | PMop(OP_NOT); |
378cc40b LW |
3058 | s--; |
3059 | OPERATOR('!'); | |
3060 | case '<': | |
3280af22 | 3061 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3062 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3063 | check_uni(); |
79072805 LW |
3064 | if (s[1] == '<') |
3065 | s = scan_heredoc(s); | |
3066 | else | |
3067 | s = scan_inputsymbol(s); | |
3068 | TERM(sublex_start()); | |
378cc40b LW |
3069 | } |
3070 | s++; | |
3071 | tmp = *s++; | |
3072 | if (tmp == '<') | |
79072805 | 3073 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3074 | if (tmp == '=') { |
3075 | tmp = *s++; | |
3076 | if (tmp == '>') | |
79072805 | 3077 | Eop(OP_NCMP); |
395c3793 | 3078 | s--; |
79072805 | 3079 | Rop(OP_LE); |
395c3793 | 3080 | } |
378cc40b | 3081 | s--; |
79072805 | 3082 | Rop(OP_LT); |
378cc40b LW |
3083 | case '>': |
3084 | s++; | |
3085 | tmp = *s++; | |
3086 | if (tmp == '>') | |
79072805 | 3087 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3088 | if (tmp == '=') |
79072805 | 3089 | Rop(OP_GE); |
378cc40b | 3090 | s--; |
79072805 | 3091 | Rop(OP_GT); |
378cc40b LW |
3092 | |
3093 | case '$': | |
bbce6d69 | 3094 | CLINE; |
3095 | ||
3280af22 NIS |
3096 | if (PL_expect == XOPERATOR) { |
3097 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3098 | PL_expect = XTERM; | |
a0d0e21e | 3099 | depcom(); |
bbce6d69 | 3100 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3101 | } |
8990e307 | 3102 | } |
a0d0e21e | 3103 | |
834a4ddd | 3104 | if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) { |
3280af22 | 3105 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3106 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3107 | sizeof PL_tokenbuf - 1, FALSE); | |
3108 | if (PL_expect == XOPERATOR) | |
3109 | no_op("Array length", s); | |
3280af22 | 3110 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3111 | PREREF(DOLSHARP); |
3280af22 NIS |
3112 | PL_expect = XOPERATOR; |
3113 | PL_pending_ident = '#'; | |
463ee0b2 | 3114 | TOKEN(DOLSHARP); |
79072805 | 3115 | } |
bbce6d69 | 3116 | |
3280af22 | 3117 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3118 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3119 | sizeof PL_tokenbuf - 1, FALSE); | |
3120 | if (PL_expect == XOPERATOR) | |
3121 | no_op("Scalar", s); | |
3280af22 NIS |
3122 | if (!PL_tokenbuf[1]) { |
3123 | if (s == PL_bufend) | |
bbce6d69 | 3124 | yyerror("Final $ should be \\$ or $name"); |
3125 | PREREF('$'); | |
8990e307 | 3126 | } |
a0d0e21e | 3127 | |
bbce6d69 | 3128 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3129 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3130 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3131 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3132 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3133 | TERM(THING); | |
3134 | } | |
3135 | ||
ff68c719 | 3136 | d = s; |
69d2bceb | 3137 | tmp = (I32)*s; |
3280af22 | 3138 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3139 | s = skipspace(s); |
3140 | ||
3280af22 | 3141 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3142 | char *t; |
3143 | if (*s == '[') { | |
3280af22 | 3144 | PL_tokenbuf[0] = '@'; |
599cee73 | 3145 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3146 | for(t = s + 1; |
834a4ddd | 3147 | isSPACE(*t) || isALNUM_lazy(t) || *t == '$'; |
bbce6d69 | 3148 | t++) ; |
a0d0e21e | 3149 | if (*t++ == ',') { |
3280af22 NIS |
3150 | PL_bufptr = skipspace(PL_bufptr); |
3151 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3152 | t++; |
cea2e8a9 | 3153 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3154 | "Multidimensional syntax %.*s not supported", |
3155 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3156 | } |
3157 | } | |
bbce6d69 | 3158 | } |
3159 | else if (*s == '{') { | |
3280af22 | 3160 | PL_tokenbuf[0] = '%'; |
599cee73 | 3161 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3162 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3163 | { | |
3280af22 | 3164 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3165 | STRLEN len; |
3166 | for (t++; isSPACE(*t); t++) ; | |
834a4ddd | 3167 | if (isIDFIRST_lazy(t)) { |
8903cb82 | 3168 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3169 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3170 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3171 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3172 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3173 | } |
93a17b20 LW |
3174 | } |
3175 | } | |
2f3197b3 | 3176 | } |
bbce6d69 | 3177 | |
3280af22 | 3178 | PL_expect = XOPERATOR; |
69d2bceb | 3179 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3180 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3181 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3182 | PL_expect = XOPERATOR; | |
bbce6d69 | 3183 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3184 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
834a4ddd | 3185 | else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1)) |
3280af22 | 3186 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
834a4ddd | 3187 | else if (isIDFIRST_lazy(s)) { |
3280af22 | 3188 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3189 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
3190 | if (tmp = keyword(tmpbuf, len)) { |
3191 | /* binary operators exclude handle interpretations */ | |
3192 | switch (tmp) { | |
3193 | case -KEY_x: | |
3194 | case -KEY_eq: | |
3195 | case -KEY_ne: | |
3196 | case -KEY_gt: | |
3197 | case -KEY_lt: | |
3198 | case -KEY_ge: | |
3199 | case -KEY_le: | |
3200 | case -KEY_cmp: | |
3201 | break; | |
3202 | default: | |
3280af22 | 3203 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3204 | break; |
3205 | } | |
3206 | } | |
68dc0745 | 3207 | else { |
3208 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3209 | if (gv && GvCVu(gv)) | |
3280af22 | 3210 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3211 | } |
93a17b20 | 3212 | } |
bbce6d69 | 3213 | else if (isDIGIT(*s)) |
3280af22 | 3214 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3215 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3216 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3217 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3218 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3219 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3220 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3221 | } |
3280af22 | 3222 | PL_pending_ident = '$'; |
79072805 | 3223 | TOKEN('$'); |
378cc40b LW |
3224 | |
3225 | case '@': | |
3280af22 | 3226 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3227 | no_op("Array", s); |
3280af22 NIS |
3228 | PL_tokenbuf[0] = '@'; |
3229 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3230 | if (!PL_tokenbuf[1]) { | |
3231 | if (s == PL_bufend) | |
bbce6d69 | 3232 | yyerror("Final @ should be \\@ or @name"); |
3233 | PREREF('@'); | |
3234 | } | |
3280af22 | 3235 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3236 | s = skipspace(s); |
3280af22 | 3237 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3238 | if (*s == '{') |
3280af22 | 3239 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3240 | |
3241 | /* Warn about @ where they meant $. */ | |
599cee73 | 3242 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3243 | if (*s == '[' || *s == '{') { |
3244 | char *t = s + 1; | |
834a4ddd | 3245 | while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3246 | t++; |
3247 | if (*t == '}' || *t == ']') { | |
3248 | t++; | |
3280af22 | 3249 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3250 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3251 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3252 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3253 | } |
93a17b20 LW |
3254 | } |
3255 | } | |
463ee0b2 | 3256 | } |
3280af22 | 3257 | PL_pending_ident = '@'; |
79072805 | 3258 | TERM('@'); |
378cc40b LW |
3259 | |
3260 | case '/': /* may either be division or pattern */ | |
3261 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3262 | if (PL_expect != XOPERATOR) { |
c277df42 | 3263 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3264 | if (PL_oldoldbufptr == PL_last_uni |
3265 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
834a4ddd | 3266 | || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5))) |
c277df42 | 3267 | check_uni(); |
8782bef2 | 3268 | s = scan_pat(s,OP_MATCH); |
79072805 | 3269 | TERM(sublex_start()); |
378cc40b LW |
3270 | } |
3271 | tmp = *s++; | |
a687059c | 3272 | if (tmp == '/') |
79072805 | 3273 | Mop(OP_DIVIDE); |
378cc40b LW |
3274 | OPERATOR(tmp); |
3275 | ||
3276 | case '.': | |
51882d45 GS |
3277 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3278 | #ifdef PERL_STRICT_CR | |
3279 | && s[1] == '\n' | |
3280 | #else | |
3281 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3282 | #endif | |
3283 | && (s == PL_linestart || s[-1] == '\n') ) | |
3284 | { | |
3280af22 NIS |
3285 | PL_lex_formbrack = 0; |
3286 | PL_expect = XSTATE; | |
79072805 LW |
3287 | goto rightbracket; |
3288 | } | |
3280af22 | 3289 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3290 | tmp = *s++; |
a687059c LW |
3291 | if (*s == tmp) { |
3292 | s++; | |
2f3197b3 LW |
3293 | if (*s == tmp) { |
3294 | s++; | |
79072805 | 3295 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3296 | } |
3297 | else | |
79072805 | 3298 | yylval.ival = 0; |
378cc40b | 3299 | OPERATOR(DOTDOT); |
a687059c | 3300 | } |
3280af22 | 3301 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3302 | check_uni(); |
79072805 | 3303 | Aop(OP_CONCAT); |
378cc40b LW |
3304 | } |
3305 | /* FALL THROUGH */ | |
3306 | case '0': case '1': case '2': case '3': case '4': | |
3307 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3308 | s = scan_num(s); |
3280af22 | 3309 | if (PL_expect == XOPERATOR) |
8990e307 | 3310 | no_op("Number",s); |
79072805 LW |
3311 | TERM(THING); |
3312 | ||
3313 | case '\'': | |
09bef843 | 3314 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3315 | if (PL_expect == XOPERATOR) { |
3316 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3317 | PL_expect = XTERM; | |
a0d0e21e LW |
3318 | depcom(); |
3319 | return ','; /* grandfather non-comma-format format */ | |
3320 | } | |
463ee0b2 | 3321 | else |
8990e307 | 3322 | no_op("String",s); |
463ee0b2 | 3323 | } |
79072805 | 3324 | if (!s) |
85e6fe83 | 3325 | missingterm((char*)0); |
79072805 LW |
3326 | yylval.ival = OP_CONST; |
3327 | TERM(sublex_start()); | |
3328 | ||
3329 | case '"': | |
09bef843 | 3330 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3331 | if (PL_expect == XOPERATOR) { |
3332 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3333 | PL_expect = XTERM; | |
a0d0e21e LW |
3334 | depcom(); |
3335 | return ','; /* grandfather non-comma-format format */ | |
3336 | } | |
463ee0b2 | 3337 | else |
8990e307 | 3338 | no_op("String",s); |
463ee0b2 | 3339 | } |
79072805 | 3340 | if (!s) |
85e6fe83 | 3341 | missingterm((char*)0); |
4633a7c4 | 3342 | yylval.ival = OP_CONST; |
3280af22 | 3343 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3344 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3345 | yylval.ival = OP_STRINGIFY; |
3346 | break; | |
3347 | } | |
3348 | } | |
79072805 LW |
3349 | TERM(sublex_start()); |
3350 | ||
3351 | case '`': | |
09bef843 | 3352 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3353 | if (PL_expect == XOPERATOR) |
8990e307 | 3354 | no_op("Backticks",s); |
79072805 | 3355 | if (!s) |
85e6fe83 | 3356 | missingterm((char*)0); |
79072805 LW |
3357 | yylval.ival = OP_BACKTICK; |
3358 | set_csh(); | |
3359 | TERM(sublex_start()); | |
3360 | ||
3361 | case '\\': | |
3362 | s++; | |
599cee73 | 3363 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3364 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3365 | *s, *s); |
3280af22 | 3366 | if (PL_expect == XOPERATOR) |
8990e307 | 3367 | no_op("Backslash",s); |
79072805 LW |
3368 | OPERATOR(REFGEN); |
3369 | ||
3370 | case 'x': | |
3280af22 | 3371 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3372 | s++; |
3373 | Mop(OP_REPEAT); | |
2f3197b3 | 3374 | } |
79072805 LW |
3375 | goto keylookup; |
3376 | ||
378cc40b | 3377 | case '_': |
79072805 LW |
3378 | case 'a': case 'A': |
3379 | case 'b': case 'B': | |
3380 | case 'c': case 'C': | |
3381 | case 'd': case 'D': | |
3382 | case 'e': case 'E': | |
3383 | case 'f': case 'F': | |
3384 | case 'g': case 'G': | |
3385 | case 'h': case 'H': | |
3386 | case 'i': case 'I': | |
3387 | case 'j': case 'J': | |
3388 | case 'k': case 'K': | |
3389 | case 'l': case 'L': | |
3390 | case 'm': case 'M': | |
3391 | case 'n': case 'N': | |
3392 | case 'o': case 'O': | |
3393 | case 'p': case 'P': | |
3394 | case 'q': case 'Q': | |
3395 | case 'r': case 'R': | |
3396 | case 's': case 'S': | |
3397 | case 't': case 'T': | |
3398 | case 'u': case 'U': | |
3399 | case 'v': case 'V': | |
3400 | case 'w': case 'W': | |
3401 | case 'X': | |
3402 | case 'y': case 'Y': | |
3403 | case 'z': case 'Z': | |
3404 | ||
49dc05e3 | 3405 | keylookup: { |
2d8e6c8d | 3406 | STRLEN n_a; |
161b471a NIS |
3407 | gv = Nullgv; |
3408 | gvp = 0; | |
49dc05e3 | 3409 | |
3280af22 NIS |
3410 | PL_bufptr = s; |
3411 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3412 | |
3413 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3414 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3415 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3416 | (PL_tokenbuf[0] == 'q' && | |
3417 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3418 | |
3419 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3420 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3421 | goto just_a_word; |
3422 | ||
3643fb5f | 3423 | d = s; |
3280af22 | 3424 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3425 | d++; /* no comments skipped here, or s### is misparsed */ |
3426 | ||
3427 | /* Is this a label? */ | |
3280af22 NIS |
3428 | if (!tmp && PL_expect == XSTATE |
3429 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3430 | s = d + 1; |
3280af22 | 3431 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3432 | CLINE; |
3433 | TOKEN(LABEL); | |
3643fb5f CS |
3434 | } |
3435 | ||
3436 | /* Check for keywords */ | |
3280af22 | 3437 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3438 | |
3439 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3440 | if (strnEQ(d,"=>",2)) { |
3441 | CLINE; | |
3280af22 | 3442 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3443 | yylval.opval->op_private = OPpCONST_BARE; |
3444 | TERM(WORD); | |
3445 | } | |
3446 | ||
a0d0e21e | 3447 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3448 | GV *ogv = Nullgv; /* override (winner) */ |
3449 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3450 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3451 | CV *cv; |
3280af22 | 3452 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3453 | (cv = GvCVu(gv))) |
3454 | { | |
3455 | if (GvIMPORTED_CV(gv)) | |
3456 | ogv = gv; | |
3457 | else if (! CvMETHOD(cv)) | |
3458 | hgv = gv; | |
3459 | } | |
3460 | if (!ogv && | |
3280af22 NIS |
3461 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3462 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3463 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3464 | { | |
3465 | ogv = gv; | |
3466 | } | |
3467 | } | |
3468 | if (ogv) { | |
3469 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3470 | } |
3471 | else if (gv && !gvp | |
3472 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
3280af22 | 3473 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3474 | { |
3475 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3476 | } |
56f7f34b CS |
3477 | else { /* no override */ |
3478 | tmp = -tmp; | |
3479 | gv = Nullgv; | |
3480 | gvp = 0; | |
4944e2f7 GS |
3481 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3482 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3483 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3484 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3485 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3486 | } |
a0d0e21e LW |
3487 | } |
3488 | ||
3489 | reserved_word: | |
3490 | switch (tmp) { | |
79072805 LW |
3491 | |
3492 | default: /* not a keyword */ | |
93a17b20 | 3493 | just_a_word: { |
96e4d5b1 | 3494 | SV *sv; |
3280af22 | 3495 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3496 | |
3497 | /* Get the rest if it looks like a package qualifier */ | |
3498 | ||
a0d0e21e | 3499 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3500 | STRLEN morelen; |
3280af22 | 3501 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3502 | TRUE, &morelen); |
3503 | if (!morelen) | |
cea2e8a9 | 3504 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3505 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3506 | len += morelen; |
a0d0e21e | 3507 | } |
8990e307 | 3508 | |
3280af22 NIS |
3509 | if (PL_expect == XOPERATOR) { |
3510 | if (PL_bufptr == PL_linestart) { | |
3511 | PL_curcop->cop_line--; | |
cea2e8a9 | 3512 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
3280af22 | 3513 | PL_curcop->cop_line++; |
463ee0b2 LW |
3514 | } |
3515 | else | |
54310121 | 3516 | no_op("Bareword",s); |
463ee0b2 | 3517 | } |
8990e307 | 3518 | |
c3e0f903 GS |
3519 | /* Look for a subroutine with this name in current package, |
3520 | unless name is "Foo::", in which case Foo is a bearword | |
3521 | (and a package name). */ | |
3522 | ||
3523 | if (len > 2 && | |
3280af22 | 3524 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3525 | { |
599cee73 | 3526 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
cea2e8a9 | 3527 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3528 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3529 | PL_tokenbuf); |
c3e0f903 | 3530 | len -= 2; |
3280af22 | 3531 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3532 | gv = Nullgv; |
3533 | gvp = 0; | |
3534 | } | |
3535 | else { | |
3536 | len = 0; | |
3537 | if (!gv) | |
3280af22 | 3538 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3539 | } |
3540 | ||
3541 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3542 | |
49dc05e3 | 3543 | if (gvp) { |
79cb57f6 | 3544 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3545 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3546 | } |
3547 | else | |
3280af22 | 3548 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3549 | |
a0d0e21e LW |
3550 | /* Presume this is going to be a bareword of some sort. */ |
3551 | ||
3552 | CLINE; | |
49dc05e3 | 3553 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3554 | yylval.opval->op_private = OPpCONST_BARE; |
3555 | ||
c3e0f903 GS |
3556 | /* And if "Foo::", then that's what it certainly is. */ |
3557 | ||
3558 | if (len) | |
3559 | goto safe_bareword; | |
3560 | ||
8990e307 LW |
3561 | /* See if it's the indirect object for a list operator. */ |
3562 | ||
3280af22 NIS |
3563 | if (PL_oldoldbufptr && |
3564 | PL_oldoldbufptr < PL_bufptr && | |
3565 | (PL_oldoldbufptr == PL_last_lop || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3566 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3567 | (PL_expect == XREF || |
3568 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3569 | { |
748a9306 LW |
3570 | bool immediate_paren = *s == '('; |
3571 | ||
a0d0e21e LW |
3572 | /* (Now we can afford to cross potential line boundary.) */ |
3573 | s = skipspace(s); | |
3574 | ||
3575 | /* Two barewords in a row may indicate method call. */ | |
3576 | ||
834a4ddd | 3577 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3578 | return tmp; |
3579 | ||
3580 | /* If not a declared subroutine, it's an indirect object. */ | |
3581 | /* (But it's an indir obj regardless for sort.) */ | |
3582 | ||
3280af22 | 3583 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3584 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3585 | (PL_last_lop_op != OP_MAPSTART && | |
3586 | PL_last_lop_op != OP_GREPSTART)) | |
3587 | { | |
3280af22 | 3588 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3589 | goto bareword; |
93a17b20 LW |
3590 | } |
3591 | } | |
8990e307 LW |
3592 | |
3593 | /* If followed by a paren, it's certainly a subroutine. */ | |
3594 | ||
3280af22 | 3595 | PL_expect = XOPERATOR; |
8990e307 | 3596 | s = skipspace(s); |
93a17b20 | 3597 | if (*s == '(') { |
79072805 | 3598 | CLINE; |
96e4d5b1 | 3599 | if (gv && GvCVu(gv)) { |
3600 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3601 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3602 | s = d + 1; |
3603 | goto its_constant; | |
3604 | } | |
3605 | } | |
3280af22 NIS |
3606 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3607 | PL_expect = XOPERATOR; | |
93a17b20 | 3608 | force_next(WORD); |
c07a80fd | 3609 | yylval.ival = 0; |
463ee0b2 | 3610 | TOKEN('&'); |
79072805 | 3611 | } |
93a17b20 | 3612 | |
a0d0e21e | 3613 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3614 | |
8ebc5c01 | 3615 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3616 | PL_last_lop = PL_oldbufptr; |
3617 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3618 | PREBLOCK(METHOD); |
463ee0b2 LW |
3619 | } |
3620 | ||
8990e307 LW |
3621 | /* If followed by a bareword, see if it looks like indir obj. */ |
3622 | ||
834a4ddd | 3623 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3624 | return tmp; |
93a17b20 | 3625 | |
8990e307 LW |
3626 | /* Not a method, so call it a subroutine (if defined) */ |
3627 | ||
8ebc5c01 | 3628 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3629 | CV* cv; |
0453d815 PM |
3630 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3631 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3632 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3633 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3634 | /* Check for a constant sub */ |
46fc3d4c | 3635 | cv = GvCV(gv); |
96e4d5b1 | 3636 | if ((sv = cv_const_sv(cv))) { |
3637 | its_constant: | |
3638 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3639 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3640 | yylval.opval->op_private = 0; | |
3641 | TOKEN(WORD); | |
89bfa8cd | 3642 | } |
3643 | ||
a5f75d66 AD |
3644 | /* Resolve to GV now. */ |
3645 | op_free(yylval.opval); | |
3646 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3647 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3648 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3649 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3650 | /* Is there a prototype? */ |
3651 | if (SvPOK(cv)) { | |
3652 | STRLEN len; | |
7a52d87a | 3653 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3654 | if (!len) |
3655 | TERM(FUNC0SUB); | |
7a52d87a | 3656 | if (strEQ(proto, "$")) |
4633a7c4 | 3657 | OPERATOR(UNIOPSUB); |
7a52d87a | 3658 | if (*proto == '&' && *s == '{') { |
3280af22 | 3659 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3660 | PREBLOCK(LSTOPSUB); |
3661 | } | |
a9ef352a | 3662 | } |
3280af22 NIS |
3663 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3664 | PL_expect = XTERM; | |
8990e307 LW |
3665 | force_next(WORD); |
3666 | TOKEN(NOAMP); | |
3667 | } | |
748a9306 | 3668 | |
8990e307 LW |
3669 | /* Call it a bare word */ |
3670 | ||
5603f27d GS |
3671 | if (PL_hints & HINT_STRICT_SUBS) |
3672 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3673 | else { | |
3674 | bareword: | |
3675 | if (ckWARN(WARN_RESERVED)) { | |
3676 | if (lastchar != '-') { | |
3677 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3678 | if (!*d) | |
cea2e8a9 | 3679 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3680 | PL_tokenbuf); |
3681 | } | |
748a9306 LW |
3682 | } |
3683 | } | |
c3e0f903 GS |
3684 | |
3685 | safe_bareword: | |
f248d071 | 3686 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3687 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3688 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3689 | lastchar, PL_tokenbuf); |
0453d815 PM |
3690 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3691 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3692 | lastchar, lastchar); |
3693 | } | |
93a17b20 | 3694 | TOKEN(WORD); |
79072805 | 3695 | } |
79072805 | 3696 | |
68dc0745 | 3697 | case KEY___FILE__: |
46fc3d4c | 3698 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3699 | newSVsv(GvSV(PL_curcop->cop_filegv))); |
46fc3d4c | 3700 | TERM(THING); |
3701 | ||
79072805 | 3702 | case KEY___LINE__: |
cf2093f6 JH |
3703 | #ifdef IV_IS_QUAD |
3704 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3705 | Perl_newSVpvf(aTHX_ "%" PERL_PRId64, (IV)PL_curcop->cop_line)); | |
3706 | #else | |
3707 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3708 | Perl_newSVpvf(aTHX_ "%ld", (long)PL_curcop->cop_line)); | |
3709 | #endif | |
79072805 | 3710 | TERM(THING); |
68dc0745 | 3711 | |
3712 | case KEY___PACKAGE__: | |
3713 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3714 | (PL_curstash |
3715 | ? newSVsv(PL_curstname) | |
3716 | : &PL_sv_undef)); | |
79072805 | 3717 | TERM(THING); |
79072805 | 3718 | |
e50aee73 | 3719 | case KEY___DATA__: |
79072805 LW |
3720 | case KEY___END__: { |
3721 | GV *gv; | |
79072805 LW |
3722 | |
3723 | /*SUPPRESS 560*/ | |
3280af22 | 3724 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3725 | char *pname = "main"; |
3280af22 NIS |
3726 | if (PL_tokenbuf[2] == 'D') |
3727 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3728 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3729 | GvMULTI_on(gv); |
79072805 | 3730 | if (!GvIO(gv)) |
a0d0e21e | 3731 | GvIOp(gv) = newIO(); |
3280af22 | 3732 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3733 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3734 | { | |
3280af22 | 3735 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3736 | fcntl(fd,F_SETFD,fd >= 3); |
3737 | } | |
79072805 | 3738 | #endif |
fd049845 | 3739 | /* Mark this internal pseudo-handle as clean */ |
3740 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3741 | if (PL_preprocess) |
a0d0e21e | 3742 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3743 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3744 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3745 | else |
a0d0e21e | 3746 | IoTYPE(GvIOp(gv)) = '<'; |
3280af22 | 3747 | PL_rsfp = Nullfp; |
79072805 LW |
3748 | } |
3749 | goto fake_eof; | |
e929a76b | 3750 | } |
de3bb511 | 3751 | |
8990e307 | 3752 | case KEY_AUTOLOAD: |
ed6116ce | 3753 | case KEY_DESTROY: |
79072805 LW |
3754 | case KEY_BEGIN: |
3755 | case KEY_END: | |
7d07dbc2 | 3756 | case KEY_INIT: |
3280af22 NIS |
3757 | if (PL_expect == XSTATE) { |
3758 | s = PL_bufptr; | |
93a17b20 | 3759 | goto really_sub; |
79072805 LW |
3760 | } |
3761 | goto just_a_word; | |
3762 | ||
a0d0e21e LW |
3763 | case KEY_CORE: |
3764 | if (*s == ':' && s[1] == ':') { | |
3765 | s += 2; | |
748a9306 | 3766 | d = s; |
3280af22 NIS |
3767 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3768 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3769 | if (tmp < 0) |
3770 | tmp = -tmp; | |
3771 | goto reserved_word; | |
3772 | } | |
3773 | goto just_a_word; | |
3774 | ||
463ee0b2 LW |
3775 | case KEY_abs: |
3776 | UNI(OP_ABS); | |
3777 | ||
79072805 LW |
3778 | case KEY_alarm: |
3779 | UNI(OP_ALARM); | |
3780 | ||
3781 | case KEY_accept: | |
a0d0e21e | 3782 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3783 | |
463ee0b2 LW |
3784 | case KEY_and: |
3785 | OPERATOR(ANDOP); | |
3786 | ||
79072805 | 3787 | case KEY_atan2: |
a0d0e21e | 3788 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3789 | |
79072805 | 3790 | case KEY_bind: |
a0d0e21e | 3791 | LOP(OP_BIND,XTERM); |
79072805 LW |
3792 | |
3793 | case KEY_binmode: | |
3794 | UNI(OP_BINMODE); | |
3795 | ||
3796 | case KEY_bless: | |
a0d0e21e | 3797 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3798 | |
3799 | case KEY_chop: | |
3800 | UNI(OP_CHOP); | |
3801 | ||
3802 | case KEY_continue: | |
3803 | PREBLOCK(CONTINUE); | |
3804 | ||
3805 | case KEY_chdir: | |
85e6fe83 | 3806 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3807 | UNI(OP_CHDIR); |
3808 | ||
3809 | case KEY_close: | |
3810 | UNI(OP_CLOSE); | |
3811 | ||
3812 | case KEY_closedir: | |
3813 | UNI(OP_CLOSEDIR); | |
3814 | ||
3815 | case KEY_cmp: | |
3816 | Eop(OP_SCMP); | |
3817 | ||
3818 | case KEY_caller: | |
3819 | UNI(OP_CALLER); | |
3820 | ||
3821 | case KEY_crypt: | |
3822 | #ifdef FCRYPT | |
6b88bc9c | 3823 | if (!PL_cryptseen++) |
de3bb511 | 3824 | init_des(); |
a687059c | 3825 | #endif |
a0d0e21e | 3826 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3827 | |
3828 | case KEY_chmod: | |
599cee73 | 3829 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3830 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 3831 | if (*d != '0' && isDIGIT(*d)) |
4438c4b7 JH |
3832 | Perl_warner(aTHX_ WARN_OCTAL, |
3833 | "chmod: mode argument is missing initial 0"); | |
748a9306 | 3834 | } |
a0d0e21e | 3835 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3836 | |
3837 | case KEY_chown: | |
a0d0e21e | 3838 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3839 | |
3840 | case KEY_connect: | |
a0d0e21e | 3841 | LOP(OP_CONNECT,XTERM); |
79072805 | 3842 | |
463ee0b2 LW |
3843 | case KEY_chr: |
3844 | UNI(OP_CHR); | |
3845 | ||
79072805 LW |
3846 | case KEY_cos: |
3847 | UNI(OP_COS); | |
3848 | ||
3849 | case KEY_chroot: | |
3850 | UNI(OP_CHROOT); | |
3851 | ||
3852 | case KEY_do: | |
3853 | s = skipspace(s); | |
3854 | if (*s == '{') | |
a0d0e21e | 3855 | PRETERMBLOCK(DO); |
79072805 | 3856 | if (*s != '\'') |
a0d0e21e | 3857 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3858 | OPERATOR(DO); |
79072805 LW |
3859 | |
3860 | case KEY_die: | |
3280af22 | 3861 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3862 | LOP(OP_DIE,XTERM); |
79072805 LW |
3863 | |
3864 | case KEY_defined: | |
3865 | UNI(OP_DEFINED); | |
3866 | ||
3867 | case KEY_delete: | |
a0d0e21e | 3868 | UNI(OP_DELETE); |
79072805 LW |
3869 | |
3870 | case KEY_dbmopen: | |
a0d0e21e LW |
3871 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3872 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3873 | |
3874 | case KEY_dbmclose: | |
3875 | UNI(OP_DBMCLOSE); | |
3876 | ||
3877 | case KEY_dump: | |
a0d0e21e | 3878 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3879 | LOOPX(OP_DUMP); |
3880 | ||
3881 | case KEY_else: | |
3882 | PREBLOCK(ELSE); | |
3883 | ||
3884 | case KEY_elsif: | |
3280af22 | 3885 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3886 | OPERATOR(ELSIF); |
3887 | ||
3888 | case KEY_eq: | |
3889 | Eop(OP_SEQ); | |
3890 | ||
a0d0e21e LW |
3891 | case KEY_exists: |
3892 | UNI(OP_EXISTS); | |
3893 | ||
79072805 LW |
3894 | case KEY_exit: |
3895 | UNI(OP_EXIT); | |
3896 | ||
3897 | case KEY_eval: | |
79072805 | 3898 | s = skipspace(s); |
3280af22 | 3899 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3900 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3901 | |
3902 | case KEY_eof: | |
3903 | UNI(OP_EOF); | |
3904 | ||
3905 | case KEY_exp: | |
3906 | UNI(OP_EXP); | |
3907 | ||
3908 | case KEY_each: | |
3909 | UNI(OP_EACH); | |
3910 | ||
3911 | case KEY_exec: | |
3912 | set_csh(); | |
a0d0e21e | 3913 | LOP(OP_EXEC,XREF); |
79072805 LW |
3914 | |
3915 | case KEY_endhostent: | |
3916 | FUN0(OP_EHOSTENT); | |
3917 | ||
3918 | case KEY_endnetent: | |
3919 | FUN0(OP_ENETENT); | |
3920 | ||
3921 | case KEY_endservent: | |
3922 | FUN0(OP_ESERVENT); | |
3923 | ||
3924 | case KEY_endprotoent: | |
3925 | FUN0(OP_EPROTOENT); | |
3926 | ||
3927 | case KEY_endpwent: | |
3928 | FUN0(OP_EPWENT); | |
3929 | ||
3930 | case KEY_endgrent: | |
3931 | FUN0(OP_EGRENT); | |
3932 | ||
3933 | case KEY_for: | |
3934 | case KEY_foreach: | |
3280af22 | 3935 | yylval.ival = PL_curcop->cop_line; |
55497cff | 3936 | s = skipspace(s); |
834a4ddd | 3937 | if (PL_expect == XSTATE && isIDFIRST_lazy(s)) { |
55497cff | 3938 | char *p = s; |
3280af22 | 3939 | if ((PL_bufend - p) >= 3 && |
55497cff | 3940 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
3941 | p += 2; | |
3942 | p = skipspace(p); | |
834a4ddd | 3943 | if (isIDFIRST_lazy(p)) |
cea2e8a9 | 3944 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 3945 | } |
79072805 LW |
3946 | OPERATOR(FOR); |
3947 | ||
3948 | case KEY_formline: | |
a0d0e21e | 3949 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3950 | |
3951 | case KEY_fork: | |
3952 | FUN0(OP_FORK); | |
3953 | ||
3954 | case KEY_fcntl: | |
a0d0e21e | 3955 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3956 | |
3957 | case KEY_fileno: | |
3958 | UNI(OP_FILENO); | |
3959 | ||
3960 | case KEY_flock: | |
a0d0e21e | 3961 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3962 | |
3963 | case KEY_gt: | |
3964 | Rop(OP_SGT); | |
3965 | ||
3966 | case KEY_ge: | |
3967 | Rop(OP_SGE); | |
3968 | ||
3969 | case KEY_grep: | |
a0d0e21e | 3970 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3971 | |
3972 | case KEY_goto: | |
a0d0e21e | 3973 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3974 | LOOPX(OP_GOTO); |
3975 | ||
3976 | case KEY_gmtime: | |
3977 | UNI(OP_GMTIME); | |
3978 | ||
3979 | case KEY_getc: | |
3980 | UNI(OP_GETC); | |
3981 | ||
3982 | case KEY_getppid: | |
3983 | FUN0(OP_GETPPID); | |
3984 | ||
3985 | case KEY_getpgrp: | |
3986 | UNI(OP_GETPGRP); | |
3987 | ||
3988 | case KEY_getpriority: | |
a0d0e21e | 3989 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3990 | |
3991 | case KEY_getprotobyname: | |
3992 | UNI(OP_GPBYNAME); | |
3993 | ||
3994 | case KEY_getprotobynumber: | |
a0d0e21e | 3995 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3996 | |
3997 | case KEY_getprotoent: | |
3998 | FUN0(OP_GPROTOENT); | |
3999 | ||
4000 | case KEY_getpwent: | |
4001 | FUN0(OP_GPWENT); | |
4002 | ||
4003 | case KEY_getpwnam: | |
ff68c719 | 4004 | UNI(OP_GPWNAM); |
79072805 LW |
4005 | |
4006 | case KEY_getpwuid: | |
ff68c719 | 4007 | UNI(OP_GPWUID); |
79072805 LW |
4008 | |
4009 | case KEY_getpeername: | |
4010 | UNI(OP_GETPEERNAME); | |
4011 | ||
4012 | case KEY_gethostbyname: | |
4013 | UNI(OP_GHBYNAME); | |
4014 | ||
4015 | case KEY_gethostbyaddr: | |
a0d0e21e | 4016 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4017 | |
4018 | case KEY_gethostent: | |
4019 | FUN0(OP_GHOSTENT); | |
4020 | ||
4021 | case KEY_getnetbyname: | |
4022 | UNI(OP_GNBYNAME); | |
4023 | ||
4024 | case KEY_getnetbyaddr: | |
a0d0e21e | 4025 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4026 | |
4027 | case KEY_getnetent: | |
4028 | FUN0(OP_GNETENT); | |
4029 | ||
4030 | case KEY_getservbyname: | |
a0d0e21e | 4031 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4032 | |
4033 | case KEY_getservbyport: | |
a0d0e21e | 4034 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4035 | |
4036 | case KEY_getservent: | |
4037 | FUN0(OP_GSERVENT); | |
4038 | ||
4039 | case KEY_getsockname: | |
4040 | UNI(OP_GETSOCKNAME); | |
4041 | ||
4042 | case KEY_getsockopt: | |
a0d0e21e | 4043 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4044 | |
4045 | case KEY_getgrent: | |
4046 | FUN0(OP_GGRENT); | |
4047 | ||
4048 | case KEY_getgrnam: | |
ff68c719 | 4049 | UNI(OP_GGRNAM); |
79072805 LW |
4050 | |
4051 | case KEY_getgrgid: | |
ff68c719 | 4052 | UNI(OP_GGRGID); |
79072805 LW |
4053 | |
4054 | case KEY_getlogin: | |
4055 | FUN0(OP_GETLOGIN); | |
4056 | ||
93a17b20 | 4057 | case KEY_glob: |
a0d0e21e LW |
4058 | set_csh(); |
4059 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4060 | |
79072805 LW |
4061 | case KEY_hex: |
4062 | UNI(OP_HEX); | |
4063 | ||
4064 | case KEY_if: | |
3280af22 | 4065 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4066 | OPERATOR(IF); |
4067 | ||
4068 | case KEY_index: | |
a0d0e21e | 4069 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4070 | |
4071 | case KEY_int: | |
4072 | UNI(OP_INT); | |
4073 | ||
4074 | case KEY_ioctl: | |
a0d0e21e | 4075 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4076 | |
4077 | case KEY_join: | |
a0d0e21e | 4078 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4079 | |
4080 | case KEY_keys: | |
4081 | UNI(OP_KEYS); | |
4082 | ||
4083 | case KEY_kill: | |
a0d0e21e | 4084 | LOP(OP_KILL,XTERM); |
79072805 LW |
4085 | |
4086 | case KEY_last: | |
a0d0e21e | 4087 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4088 | LOOPX(OP_LAST); |
a0d0e21e | 4089 | |
79072805 LW |
4090 | case KEY_lc: |
4091 | UNI(OP_LC); | |
4092 | ||
4093 | case KEY_lcfirst: | |
4094 | UNI(OP_LCFIRST); | |
4095 | ||
4096 | case KEY_local: | |
09bef843 | 4097 | yylval.ival = 0; |
79072805 LW |
4098 | OPERATOR(LOCAL); |
4099 | ||
4100 | case KEY_length: | |
4101 | UNI(OP_LENGTH); | |
4102 | ||
4103 | case KEY_lt: | |
4104 | Rop(OP_SLT); | |
4105 | ||
4106 | case KEY_le: | |
4107 | Rop(OP_SLE); | |
4108 | ||
4109 | case KEY_localtime: | |
4110 | UNI(OP_LOCALTIME); | |
4111 | ||
4112 | case KEY_log: | |
4113 | UNI(OP_LOG); | |
4114 | ||
4115 | case KEY_link: | |
a0d0e21e | 4116 | LOP(OP_LINK,XTERM); |
79072805 LW |
4117 | |
4118 | case KEY_listen: | |
a0d0e21e | 4119 | LOP(OP_LISTEN,XTERM); |
79072805 | 4120 | |
c0329465 MB |
4121 | case KEY_lock: |
4122 | UNI(OP_LOCK); | |
4123 | ||
79072805 LW |
4124 | case KEY_lstat: |
4125 | UNI(OP_LSTAT); | |
4126 | ||
4127 | case KEY_m: | |
8782bef2 | 4128 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4129 | TERM(sublex_start()); |
4130 | ||
a0d0e21e | 4131 | case KEY_map: |
4e4e412b GS |
4132 | LOP(OP_MAPSTART, *s == '(' ? XTERM : XREF); |
4133 | ||
79072805 | 4134 | case KEY_mkdir: |
a0d0e21e | 4135 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4136 | |
4137 | case KEY_msgctl: | |
a0d0e21e | 4138 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4139 | |
4140 | case KEY_msgget: | |
a0d0e21e | 4141 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4142 | |
4143 | case KEY_msgrcv: | |
a0d0e21e | 4144 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4145 | |
4146 | case KEY_msgsnd: | |
a0d0e21e | 4147 | LOP(OP_MSGSND,XTERM); |
79072805 | 4148 | |
93a17b20 | 4149 | case KEY_my: |
3280af22 | 4150 | PL_in_my = TRUE; |
c750a3ec | 4151 | s = skipspace(s); |
834a4ddd | 4152 | if (isIDFIRST_lazy(s)) { |
3280af22 | 4153 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4154 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4155 | goto really_sub; | |
3280af22 NIS |
4156 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4157 | if (!PL_in_my_stash) { | |
c750a3ec | 4158 | char tmpbuf[1024]; |
3280af22 NIS |
4159 | PL_bufptr = s; |
4160 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4161 | yyerror(tmpbuf); |
4162 | } | |
4163 | } | |
09bef843 | 4164 | yylval.ival = 1; |
55497cff | 4165 | OPERATOR(MY); |
93a17b20 | 4166 | |
79072805 | 4167 | case KEY_next: |
a0d0e21e | 4168 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4169 | LOOPX(OP_NEXT); |
4170 | ||
4171 | case KEY_ne: | |
4172 | Eop(OP_SNE); | |
4173 | ||
a0d0e21e | 4174 | case KEY_no: |
3280af22 | 4175 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4176 | yyerror("\"no\" not allowed in expression"); |
4177 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4178 | s = force_version(s); |
a0d0e21e LW |
4179 | yylval.ival = 0; |
4180 | OPERATOR(USE); | |
4181 | ||
4182 | case KEY_not: | |
4183 | OPERATOR(NOTOP); | |
4184 | ||
79072805 | 4185 | case KEY_open: |
93a17b20 | 4186 | s = skipspace(s); |
834a4ddd | 4187 | if (isIDFIRST_lazy(s)) { |
93a17b20 | 4188 | char *t; |
834a4ddd | 4189 | for (d = s; isALNUM_lazy(d); d++) ; |
93a17b20 | 4190 | t = skipspace(d); |
0453d815 PM |
4191 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_AMBIGUOUS)) |
4192 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
4193 | "Precedence problem: open %.*s should be open(%.*s)", | |
4194 | d-s,s, d-s,s); | |
93a17b20 | 4195 | } |
a0d0e21e | 4196 | LOP(OP_OPEN,XTERM); |
79072805 | 4197 | |
463ee0b2 | 4198 | case KEY_or: |
a0d0e21e | 4199 | yylval.ival = OP_OR; |
463ee0b2 LW |
4200 | OPERATOR(OROP); |
4201 | ||
79072805 LW |
4202 | case KEY_ord: |
4203 | UNI(OP_ORD); | |
4204 | ||
4205 | case KEY_oct: | |
4206 | UNI(OP_OCT); | |
4207 | ||
4208 | case KEY_opendir: | |
a0d0e21e | 4209 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4210 | |
4211 | case KEY_print: | |
3280af22 | 4212 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4213 | LOP(OP_PRINT,XREF); |
79072805 LW |
4214 | |
4215 | case KEY_printf: | |
3280af22 | 4216 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4217 | LOP(OP_PRTF,XREF); |
79072805 | 4218 | |
c07a80fd | 4219 | case KEY_prototype: |
4220 | UNI(OP_PROTOTYPE); | |
4221 | ||
79072805 | 4222 | case KEY_push: |
a0d0e21e | 4223 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4224 | |
4225 | case KEY_pop: | |
4226 | UNI(OP_POP); | |
4227 | ||
a0d0e21e LW |
4228 | case KEY_pos: |
4229 | UNI(OP_POS); | |
4230 | ||
79072805 | 4231 | case KEY_pack: |
a0d0e21e | 4232 | LOP(OP_PACK,XTERM); |
79072805 LW |
4233 | |
4234 | case KEY_package: | |
a0d0e21e | 4235 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4236 | OPERATOR(PACKAGE); |
4237 | ||
4238 | case KEY_pipe: | |
a0d0e21e | 4239 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4240 | |
4241 | case KEY_q: | |
09bef843 | 4242 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4243 | if (!s) |
85e6fe83 | 4244 | missingterm((char*)0); |
79072805 LW |
4245 | yylval.ival = OP_CONST; |
4246 | TERM(sublex_start()); | |
4247 | ||
a0d0e21e LW |
4248 | case KEY_quotemeta: |
4249 | UNI(OP_QUOTEMETA); | |
4250 | ||
8990e307 | 4251 | case KEY_qw: |
09bef843 | 4252 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4253 | if (!s) |
85e6fe83 | 4254 | missingterm((char*)0); |
8127e0e3 GS |
4255 | force_next(')'); |
4256 | if (SvCUR(PL_lex_stuff)) { | |
4257 | OP *words = Nullop; | |
4258 | int warned = 0; | |
3280af22 | 4259 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4260 | while (len) { |
4261 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4262 | if (len) { | |
4263 | char *b = d; | |
4264 | if (!warned && ckWARN(WARN_SYNTAX)) { | |
4265 | for (; !isSPACE(*d) && len; --len, ++d) { | |
4266 | if (*d == ',') { | |
cea2e8a9 | 4267 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4268 | "Possible attempt to separate words with commas"); |
4269 | ++warned; | |
4270 | } | |
4271 | else if (*d == '#') { | |
cea2e8a9 | 4272 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4273 | "Possible attempt to put comments in qw() list"); |
4274 | ++warned; | |
4275 | } | |
4276 | } | |
4277 | } | |
4278 | else { | |
4279 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4280 | } | |
4281 | words = append_elem(OP_LIST, words, | |
4282 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4283 | } |
4284 | } | |
8127e0e3 GS |
4285 | if (words) { |
4286 | PL_nextval[PL_nexttoke].opval = words; | |
4287 | force_next(THING); | |
4288 | } | |
55497cff | 4289 | } |
8127e0e3 GS |
4290 | if (PL_lex_stuff) |
4291 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4292 | PL_lex_stuff = Nullsv; |
3280af22 | 4293 | PL_expect = XTERM; |
8127e0e3 | 4294 | TOKEN('('); |
8990e307 | 4295 | |
79072805 | 4296 | case KEY_qq: |
09bef843 | 4297 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4298 | if (!s) |
85e6fe83 | 4299 | missingterm((char*)0); |
a0d0e21e | 4300 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4301 | if (SvIVX(PL_lex_stuff) == '\'') |
4302 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4303 | TERM(sublex_start()); |
4304 | ||
8782bef2 GB |
4305 | case KEY_qr: |
4306 | s = scan_pat(s,OP_QR); | |
4307 | TERM(sublex_start()); | |
4308 | ||
79072805 | 4309 | case KEY_qx: |
09bef843 | 4310 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4311 | if (!s) |
85e6fe83 | 4312 | missingterm((char*)0); |
79072805 LW |
4313 | yylval.ival = OP_BACKTICK; |
4314 | set_csh(); | |
4315 | TERM(sublex_start()); | |
4316 | ||
4317 | case KEY_return: | |
4318 | OLDLOP(OP_RETURN); | |
4319 | ||
4320 | case KEY_require: | |
3280af22 | 4321 | *PL_tokenbuf = '\0'; |
a0d0e21e | 4322 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
834a4ddd | 4323 | if (isIDFIRST_lazy(PL_tokenbuf)) |
3280af22 | 4324 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
748a9306 | 4325 | else if (*s == '<') |
a0d0e21e | 4326 | yyerror("<> should be quotes"); |
463ee0b2 | 4327 | UNI(OP_REQUIRE); |
79072805 LW |
4328 | |
4329 | case KEY_reset: | |
4330 | UNI(OP_RESET); | |
4331 | ||
4332 | case KEY_redo: | |
a0d0e21e | 4333 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4334 | LOOPX(OP_REDO); |
4335 | ||
4336 | case KEY_rename: | |
a0d0e21e | 4337 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4338 | |
4339 | case KEY_rand: | |
4340 | UNI(OP_RAND); | |
4341 | ||
4342 | case KEY_rmdir: | |
4343 | UNI(OP_RMDIR); | |
4344 | ||
4345 | case KEY_rindex: | |
a0d0e21e | 4346 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4347 | |
4348 | case KEY_read: | |
a0d0e21e | 4349 | LOP(OP_READ,XTERM); |
79072805 LW |
4350 | |
4351 | case KEY_readdir: | |
4352 | UNI(OP_READDIR); | |
4353 | ||
93a17b20 LW |
4354 | case KEY_readline: |
4355 | set_csh(); | |
4356 | UNI(OP_READLINE); | |
4357 | ||
4358 | case KEY_readpipe: | |
4359 | set_csh(); | |
4360 | UNI(OP_BACKTICK); | |
4361 | ||
79072805 LW |
4362 | case KEY_rewinddir: |
4363 | UNI(OP_REWINDDIR); | |
4364 | ||
4365 | case KEY_recv: | |
a0d0e21e | 4366 | LOP(OP_RECV,XTERM); |
79072805 LW |
4367 | |
4368 | case KEY_reverse: | |
a0d0e21e | 4369 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4370 | |
4371 | case KEY_readlink: | |
4372 | UNI(OP_READLINK); | |
4373 | ||
4374 | case KEY_ref: | |
4375 | UNI(OP_REF); | |
4376 | ||
4377 | case KEY_s: | |
4378 | s = scan_subst(s); | |
4379 | if (yylval.opval) | |
4380 | TERM(sublex_start()); | |
4381 | else | |
4382 | TOKEN(1); /* force error */ | |
4383 | ||
a0d0e21e LW |
4384 | case KEY_chomp: |
4385 | UNI(OP_CHOMP); | |
4386 | ||
79072805 LW |
4387 | case KEY_scalar: |
4388 | UNI(OP_SCALAR); | |
4389 | ||
4390 | case KEY_select: | |
a0d0e21e | 4391 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4392 | |
4393 | case KEY_seek: | |
a0d0e21e | 4394 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4395 | |
4396 | case KEY_semctl: | |
a0d0e21e | 4397 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4398 | |
4399 | case KEY_semget: | |
a0d0e21e | 4400 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4401 | |
4402 | case KEY_semop: | |
a0d0e21e | 4403 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4404 | |
4405 | case KEY_send: | |
a0d0e21e | 4406 | LOP(OP_SEND,XTERM); |
79072805 LW |
4407 | |
4408 | case KEY_setpgrp: | |
a0d0e21e | 4409 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4410 | |
4411 | case KEY_setpriority: | |
a0d0e21e | 4412 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4413 | |
4414 | case KEY_sethostent: | |
ff68c719 | 4415 | UNI(OP_SHOSTENT); |
79072805 LW |
4416 | |
4417 | case KEY_setnetent: | |
ff68c719 | 4418 | UNI(OP_SNETENT); |
79072805 LW |
4419 | |
4420 | case KEY_setservent: | |
ff68c719 | 4421 | UNI(OP_SSERVENT); |
79072805 LW |
4422 | |
4423 | case KEY_setprotoent: | |
ff68c719 | 4424 | UNI(OP_SPROTOENT); |
79072805 LW |
4425 | |
4426 | case KEY_setpwent: | |
4427 | FUN0(OP_SPWENT); | |
4428 | ||
4429 | case KEY_setgrent: | |
4430 | FUN0(OP_SGRENT); | |
4431 | ||
4432 | case KEY_seekdir: | |
a0d0e21e | 4433 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4434 | |
4435 | case KEY_setsockopt: | |
a0d0e21e | 4436 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4437 | |
4438 | case KEY_shift: | |
4439 | UNI(OP_SHIFT); | |
4440 | ||
4441 | case KEY_shmctl: | |
a0d0e21e | 4442 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4443 | |
4444 | case KEY_shmget: | |
a0d0e21e | 4445 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4446 | |
4447 | case KEY_shmread: | |
a0d0e21e | 4448 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4449 | |
4450 | case KEY_shmwrite: | |
a0d0e21e | 4451 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4452 | |
4453 | case KEY_shutdown: | |
a0d0e21e | 4454 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4455 | |
4456 | case KEY_sin: | |
4457 | UNI(OP_SIN); | |
4458 | ||
4459 | case KEY_sleep: | |
4460 | UNI(OP_SLEEP); | |
4461 | ||
4462 | case KEY_socket: | |
a0d0e21e | 4463 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4464 | |
4465 | case KEY_socketpair: | |
a0d0e21e | 4466 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4467 | |
4468 | case KEY_sort: | |
3280af22 | 4469 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4470 | s = skipspace(s); |
4471 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4472 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4473 | PL_expect = XTERM; |
15f0808c | 4474 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4475 | LOP(OP_SORT,XREF); |
79072805 LW |
4476 | |
4477 | case KEY_split: | |
a0d0e21e | 4478 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4479 | |
4480 | case KEY_sprintf: | |
a0d0e21e | 4481 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4482 | |
4483 | case KEY_splice: | |
a0d0e21e | 4484 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4485 | |
4486 | case KEY_sqrt: | |
4487 | UNI(OP_SQRT); | |
4488 | ||
4489 | case KEY_srand: | |
4490 | UNI(OP_SRAND); | |
4491 | ||
4492 | case KEY_stat: | |
4493 | UNI(OP_STAT); | |
4494 | ||
4495 | case KEY_study: | |
3280af22 | 4496 | PL_sawstudy++; |
79072805 LW |
4497 | UNI(OP_STUDY); |
4498 | ||
4499 | case KEY_substr: | |
a0d0e21e | 4500 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4501 | |
4502 | case KEY_format: | |
4503 | case KEY_sub: | |
93a17b20 | 4504 | really_sub: |
09bef843 | 4505 | { |
3280af22 | 4506 | char tmpbuf[sizeof PL_tokenbuf]; |
09bef843 SB |
4507 | expectation attrful; |
4508 | bool have_name, have_proto; | |
4509 | int key = tmp; | |
4510 | ||
4511 | s = skipspace(s); | |
4512 | ||
4513 | if (isIDFIRST_lazy(s) || *s == '\'' || | |
4514 | (*s == ':' && s[1] == ':')) | |
4515 | { | |
4516 | PL_expect = XBLOCK; | |
4517 | attrful = XATTRBLOCK; | |
4518 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); | |
4519 | if (strchr(tmpbuf, ':')) | |
4520 | sv_setpv(PL_subname, tmpbuf); | |
4521 | else { | |
4522 | sv_setsv(PL_subname,PL_curstname); | |
4523 | sv_catpvn(PL_subname,"::",2); | |
4524 | sv_catpvn(PL_subname,tmpbuf,len); | |
4525 | } | |
4526 | s = skipspace(d); | |
4527 | have_name = TRUE; | |
4528 | } | |
463ee0b2 | 4529 | else { |
09bef843 SB |
4530 | if (key == KEY_my) |
4531 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4532 | PL_expect = XTERMBLOCK; | |
4533 | attrful = XATTRTERM; | |
4534 | sv_setpv(PL_subname,"?"); | |
4535 | have_name = FALSE; | |
463ee0b2 | 4536 | } |
4633a7c4 | 4537 | |
09bef843 SB |
4538 | if (key == KEY_format) { |
4539 | if (*s == '=') | |
4540 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4541 | if (have_name) | |
4542 | (void) force_word(tmpbuf, WORD, FALSE, TRUE, TRUE); | |
4543 | OPERATOR(FORMAT); | |
4544 | } | |
79072805 | 4545 | |
09bef843 SB |
4546 | /* Look for a prototype */ |
4547 | if (*s == '(') { | |
4548 | char *p; | |
4549 | ||
4550 | s = scan_str(s,FALSE,FALSE); | |
4551 | if (!s) { | |
4552 | if (PL_lex_stuff) | |
4553 | SvREFCNT_dec(PL_lex_stuff); | |
4554 | PL_lex_stuff = Nullsv; | |
4555 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4556 | } | |
4557 | /* strip spaces */ | |
4558 | d = SvPVX(PL_lex_stuff); | |
4559 | tmp = 0; | |
4560 | for (p = d; *p; ++p) { | |
4561 | if (!isSPACE(*p)) | |
4562 | d[tmp++] = *p; | |
4563 | } | |
4564 | d[tmp] = '\0'; | |
4565 | SvCUR(PL_lex_stuff) = tmp; | |
4566 | have_proto = TRUE; | |
68dc0745 | 4567 | |
09bef843 | 4568 | s = skipspace(s); |
4633a7c4 | 4569 | } |
09bef843 SB |
4570 | else |
4571 | have_proto = FALSE; | |
4572 | ||
4573 | if (*s == ':' && s[1] != ':') | |
4574 | PL_expect = attrful; | |
4575 | ||
4576 | if (have_proto) { | |
4577 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
4578 | PL_lex_stuff = Nullsv; | |
4579 | force_next(THING); | |
68dc0745 | 4580 | } |
09bef843 SB |
4581 | if (!have_name) { |
4582 | sv_setpv(PL_subname,"__ANON__"); | |
4583 | TOKEN(ANONSUB); | |
4633a7c4 | 4584 | } |
09bef843 SB |
4585 | (void) force_word(tmpbuf, WORD, FALSE, TRUE, TRUE); |
4586 | if (key == KEY_my) | |
4587 | TOKEN(MYSUB); | |
4588 | TOKEN(SUB); | |
4633a7c4 | 4589 | } |
79072805 LW |
4590 | |
4591 | case KEY_system: | |
4592 | set_csh(); | |
a0d0e21e | 4593 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4594 | |
4595 | case KEY_symlink: | |
a0d0e21e | 4596 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4597 | |
4598 | case KEY_syscall: | |
a0d0e21e | 4599 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4600 | |
c07a80fd | 4601 | case KEY_sysopen: |
4602 | LOP(OP_SYSOPEN,XTERM); | |
4603 | ||
137443ea | 4604 | case KEY_sysseek: |
4605 | LOP(OP_SYSSEEK,XTERM); | |
4606 | ||
79072805 | 4607 | case KEY_sysread: |
a0d0e21e | 4608 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4609 | |
4610 | case KEY_syswrite: | |
a0d0e21e | 4611 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4612 | |
4613 | case KEY_tr: | |
4614 | s = scan_trans(s); | |
4615 | TERM(sublex_start()); | |
4616 | ||
4617 | case KEY_tell: | |
4618 | UNI(OP_TELL); | |
4619 | ||
4620 | case KEY_telldir: | |
4621 | UNI(OP_TELLDIR); | |
4622 | ||
463ee0b2 | 4623 | case KEY_tie: |
a0d0e21e | 4624 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4625 | |
c07a80fd | 4626 | case KEY_tied: |
4627 | UNI(OP_TIED); | |
4628 | ||
79072805 LW |
4629 | case KEY_time: |
4630 | FUN0(OP_TIME); | |
4631 | ||
4632 | case KEY_times: | |
4633 | FUN0(OP_TMS); | |
4634 | ||
4635 | case KEY_truncate: | |
a0d0e21e | 4636 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4637 | |
4638 | case KEY_uc: | |
4639 | UNI(OP_UC); | |
4640 | ||
4641 | case KEY_ucfirst: | |
4642 | UNI(OP_UCFIRST); | |
4643 | ||
463ee0b2 LW |
4644 | case KEY_untie: |
4645 | UNI(OP_UNTIE); | |
4646 | ||
79072805 | 4647 | case KEY_until: |
3280af22 | 4648 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4649 | OPERATOR(UNTIL); |
4650 | ||
4651 | case KEY_unless: | |
3280af22 | 4652 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4653 | OPERATOR(UNLESS); |
4654 | ||
4655 | case KEY_unlink: | |
a0d0e21e | 4656 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4657 | |
4658 | case KEY_undef: | |
4659 | UNI(OP_UNDEF); | |
4660 | ||
4661 | case KEY_unpack: | |
a0d0e21e | 4662 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4663 | |
4664 | case KEY_utime: | |
a0d0e21e | 4665 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4666 | |
4667 | case KEY_umask: | |
599cee73 | 4668 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4669 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 JH |
4670 | if (*d != '0' && isDIGIT(*d)) |
4671 | Perl_warner(aTHX_ WARN_OCTAL, | |
4672 | "umask: argument is missing initial 0"); | |
748a9306 | 4673 | } |
79072805 LW |
4674 | UNI(OP_UMASK); |
4675 | ||
4676 | case KEY_unshift: | |
a0d0e21e LW |
4677 | LOP(OP_UNSHIFT,XTERM); |
4678 | ||
4679 | case KEY_use: | |
3280af22 | 4680 | if (PL_expect != XSTATE) |
a0d0e21e | 4681 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4682 | s = skipspace(s); |
4683 | if(isDIGIT(*s)) { | |
4684 | s = force_version(s); | |
4685 | if(*s == ';' || (s = skipspace(s), *s == ';')) { | |
3280af22 | 4686 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4687 | force_next(WORD); |
4688 | } | |
4689 | } | |
4690 | else { | |
4691 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4692 | s = force_version(s); | |
4693 | } | |
a0d0e21e LW |
4694 | yylval.ival = 1; |
4695 | OPERATOR(USE); | |
79072805 LW |
4696 | |
4697 | case KEY_values: | |
4698 | UNI(OP_VALUES); | |
4699 | ||
4700 | case KEY_vec: | |
3280af22 | 4701 | PL_sawvec = TRUE; |
a0d0e21e | 4702 | LOP(OP_VEC,XTERM); |
79072805 LW |
4703 | |
4704 | case KEY_while: | |
3280af22 | 4705 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4706 | OPERATOR(WHILE); |
4707 | ||
4708 | case KEY_warn: | |
3280af22 | 4709 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4710 | LOP(OP_WARN,XTERM); |
79072805 LW |
4711 | |
4712 | case KEY_wait: | |
4713 | FUN0(OP_WAIT); | |
4714 | ||
4715 | case KEY_waitpid: | |
a0d0e21e | 4716 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4717 | |
4718 | case KEY_wantarray: | |
4719 | FUN0(OP_WANTARRAY); | |
4720 | ||
4721 | case KEY_write: | |
9d116dd7 JH |
4722 | #ifdef EBCDIC |
4723 | { | |
4724 | static char ctl_l[2]; | |
4725 | ||
4726 | if (ctl_l[0] == '\0') | |
4727 | ctl_l[0] = toCTRL('L'); | |
4728 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4729 | } | |
4730 | #else | |
4731 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4732 | #endif | |
79072805 LW |
4733 | UNI(OP_ENTERWRITE); |
4734 | ||
4735 | case KEY_x: | |
3280af22 | 4736 | if (PL_expect == XOPERATOR) |
79072805 LW |
4737 | Mop(OP_REPEAT); |
4738 | check_uni(); | |
4739 | goto just_a_word; | |
4740 | ||
a0d0e21e LW |
4741 | case KEY_xor: |
4742 | yylval.ival = OP_XOR; | |
4743 | OPERATOR(OROP); | |
4744 | ||
79072805 LW |
4745 | case KEY_y: |
4746 | s = scan_trans(s); | |
4747 | TERM(sublex_start()); | |
4748 | } | |
49dc05e3 | 4749 | }} |
79072805 LW |
4750 | } |
4751 | ||
4752 | I32 | |
864dbfa3 | 4753 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4754 | { |
4755 | switch (*d) { | |
4756 | case '_': | |
4757 | if (d[1] == '_') { | |
a0d0e21e | 4758 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4759 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4760 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4761 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4762 | if (strEQ(d,"__END__")) return KEY___END__; |
4763 | } | |
4764 | break; | |
8990e307 LW |
4765 | case 'A': |
4766 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4767 | break; | |
79072805 | 4768 | case 'a': |
463ee0b2 LW |
4769 | switch (len) { |
4770 | case 3: | |
a0d0e21e LW |
4771 | if (strEQ(d,"and")) return -KEY_and; |
4772 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4773 | break; |
463ee0b2 | 4774 | case 5: |
a0d0e21e LW |
4775 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4776 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4777 | break; |
4778 | case 6: | |
a0d0e21e | 4779 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4780 | break; |
4781 | } | |
79072805 LW |
4782 | break; |
4783 | case 'B': | |
4784 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4785 | break; |
79072805 | 4786 | case 'b': |
a0d0e21e LW |
4787 | if (strEQ(d,"bless")) return -KEY_bless; |
4788 | if (strEQ(d,"bind")) return -KEY_bind; | |
4789 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4790 | break; | |
4791 | case 'C': | |
4792 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4793 | break; |
4794 | case 'c': | |
4795 | switch (len) { | |
4796 | case 3: | |
a0d0e21e LW |
4797 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4798 | if (strEQ(d,"chr")) return -KEY_chr; | |
4799 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4800 | break; |
4801 | case 4: | |
4802 | if (strEQ(d,"chop")) return KEY_chop; | |
4803 | break; | |
4804 | case 5: | |
a0d0e21e LW |
4805 | if (strEQ(d,"close")) return -KEY_close; |
4806 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4807 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4808 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4809 | if (strEQ(d,"chown")) return -KEY_chown; | |
4810 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4811 | break; |
4812 | case 6: | |
a0d0e21e LW |
4813 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4814 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4815 | break; |
4816 | case 7: | |
a0d0e21e | 4817 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4818 | break; |
4819 | case 8: | |
a0d0e21e LW |
4820 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4821 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4822 | break; |
4823 | } | |
4824 | break; | |
ed6116ce LW |
4825 | case 'D': |
4826 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4827 | break; | |
79072805 LW |
4828 | case 'd': |
4829 | switch (len) { | |
4830 | case 2: | |
4831 | if (strEQ(d,"do")) return KEY_do; | |
4832 | break; | |
4833 | case 3: | |
a0d0e21e | 4834 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4835 | break; |
4836 | case 4: | |
a0d0e21e | 4837 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4838 | break; |
4839 | case 6: | |
4840 | if (strEQ(d,"delete")) return KEY_delete; | |
4841 | break; | |
4842 | case 7: | |
4843 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4844 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4845 | break; |
4846 | case 8: | |
a0d0e21e | 4847 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4848 | break; |
4849 | } | |
4850 | break; | |
4851 | case 'E': | |
a0d0e21e | 4852 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4853 | if (strEQ(d,"END")) return KEY_END; |
4854 | break; | |
4855 | case 'e': | |
4856 | switch (len) { | |
4857 | case 2: | |
a0d0e21e | 4858 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4859 | break; |
4860 | case 3: | |
a0d0e21e LW |
4861 | if (strEQ(d,"eof")) return -KEY_eof; |
4862 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4863 | break; |
4864 | case 4: | |
4865 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4866 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4867 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4868 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4869 | if (strEQ(d,"each")) return KEY_each; |
4870 | break; | |
4871 | case 5: | |
4872 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4873 | break; | |
a0d0e21e LW |
4874 | case 6: |
4875 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 4876 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 4877 | break; |
79072805 | 4878 | case 8: |
a0d0e21e LW |
4879 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4880 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4881 | break; |
4882 | case 9: | |
a0d0e21e | 4883 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4884 | break; |
4885 | case 10: | |
a0d0e21e LW |
4886 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
4887 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
4888 | break; |
4889 | case 11: | |
a0d0e21e | 4890 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 4891 | break; |
a687059c | 4892 | } |
a687059c | 4893 | break; |
79072805 LW |
4894 | case 'f': |
4895 | switch (len) { | |
4896 | case 3: | |
4897 | if (strEQ(d,"for")) return KEY_for; | |
4898 | break; | |
4899 | case 4: | |
a0d0e21e | 4900 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
4901 | break; |
4902 | case 5: | |
a0d0e21e LW |
4903 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
4904 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
4905 | break; |
4906 | case 6: | |
4907 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 4908 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
4909 | break; |
4910 | case 7: | |
4911 | if (strEQ(d,"foreach")) return KEY_foreach; | |
4912 | break; | |
4913 | case 8: | |
a0d0e21e | 4914 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 4915 | break; |
378cc40b | 4916 | } |
a687059c | 4917 | break; |
79072805 LW |
4918 | case 'G': |
4919 | if (len == 2) { | |
a0d0e21e LW |
4920 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
4921 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 4922 | } |
a687059c | 4923 | break; |
79072805 | 4924 | case 'g': |
a687059c LW |
4925 | if (strnEQ(d,"get",3)) { |
4926 | d += 3; | |
4927 | if (*d == 'p') { | |
79072805 LW |
4928 | switch (len) { |
4929 | case 7: | |
a0d0e21e LW |
4930 | if (strEQ(d,"ppid")) return -KEY_getppid; |
4931 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
4932 | break; |
4933 | case 8: | |
a0d0e21e LW |
4934 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
4935 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
4936 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
4937 | break; |
4938 | case 11: | |
a0d0e21e LW |
4939 | if (strEQ(d,"peername")) return -KEY_getpeername; |
4940 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
4941 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
4942 | break; |
4943 | case 14: | |
a0d0e21e | 4944 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
4945 | break; |
4946 | case 16: | |
a0d0e21e | 4947 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
4948 | break; |
4949 | } | |
a687059c LW |
4950 | } |
4951 | else if (*d == 'h') { | |
a0d0e21e LW |
4952 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
4953 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
4954 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
4955 | } |
4956 | else if (*d == 'n') { | |
a0d0e21e LW |
4957 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
4958 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
4959 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
4960 | } |
4961 | else if (*d == 's') { | |
a0d0e21e LW |
4962 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
4963 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
4964 | if (strEQ(d,"servent")) return -KEY_getservent; | |
4965 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
4966 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
4967 | } |
4968 | else if (*d == 'g') { | |
a0d0e21e LW |
4969 | if (strEQ(d,"grent")) return -KEY_getgrent; |
4970 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
4971 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
4972 | } |
4973 | else if (*d == 'l') { | |
a0d0e21e | 4974 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 4975 | } |
a0d0e21e | 4976 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 4977 | break; |
a687059c | 4978 | } |
79072805 LW |
4979 | switch (len) { |
4980 | case 2: | |
a0d0e21e LW |
4981 | if (strEQ(d,"gt")) return -KEY_gt; |
4982 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
4983 | break; |
4984 | case 4: | |
4985 | if (strEQ(d,"grep")) return KEY_grep; | |
4986 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 4987 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
4988 | break; |
4989 | case 6: | |
a0d0e21e | 4990 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 4991 | break; |
378cc40b | 4992 | } |
a687059c | 4993 | break; |
79072805 | 4994 | case 'h': |
a0d0e21e | 4995 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 4996 | break; |
7d07dbc2 MB |
4997 | case 'I': |
4998 | if (strEQ(d,"INIT")) return KEY_INIT; | |
4999 | break; | |
79072805 LW |
5000 | case 'i': |
5001 | switch (len) { | |
5002 | case 2: | |
5003 | if (strEQ(d,"if")) return KEY_if; | |
5004 | break; | |
5005 | case 3: | |
a0d0e21e | 5006 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5007 | break; |
5008 | case 5: | |
a0d0e21e LW |
5009 | if (strEQ(d,"index")) return -KEY_index; |
5010 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5011 | break; |
5012 | } | |
a687059c | 5013 | break; |
79072805 | 5014 | case 'j': |
a0d0e21e | 5015 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5016 | break; |
79072805 LW |
5017 | case 'k': |
5018 | if (len == 4) { | |
5019 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5020 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5021 | } |
79072805 LW |
5022 | break; |
5023 | case 'L': | |
5024 | if (len == 2) { | |
a0d0e21e LW |
5025 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5026 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5027 | } |
79072805 LW |
5028 | break; |
5029 | case 'l': | |
5030 | switch (len) { | |
5031 | case 2: | |
a0d0e21e LW |
5032 | if (strEQ(d,"lt")) return -KEY_lt; |
5033 | if (strEQ(d,"le")) return -KEY_le; | |
5034 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5035 | break; |
5036 | case 3: | |
a0d0e21e | 5037 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5038 | break; |
5039 | case 4: | |
5040 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5041 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5042 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5043 | break; |
79072805 LW |
5044 | case 5: |
5045 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5046 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5047 | break; |
5048 | case 6: | |
a0d0e21e LW |
5049 | if (strEQ(d,"length")) return -KEY_length; |
5050 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5051 | break; |
5052 | case 7: | |
a0d0e21e | 5053 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5054 | break; |
5055 | case 9: | |
a0d0e21e | 5056 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5057 | break; |
5058 | } | |
a687059c | 5059 | break; |
79072805 LW |
5060 | case 'm': |
5061 | switch (len) { | |
5062 | case 1: return KEY_m; | |
93a17b20 LW |
5063 | case 2: |
5064 | if (strEQ(d,"my")) return KEY_my; | |
5065 | break; | |
a0d0e21e LW |
5066 | case 3: |
5067 | if (strEQ(d,"map")) return KEY_map; | |
5068 | break; | |
79072805 | 5069 | case 5: |
a0d0e21e | 5070 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5071 | break; |
5072 | case 6: | |
a0d0e21e LW |
5073 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5074 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5075 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5076 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5077 | break; |
5078 | } | |
a687059c | 5079 | break; |
79072805 | 5080 | case 'N': |
a0d0e21e | 5081 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5082 | break; |
79072805 LW |
5083 | case 'n': |
5084 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5085 | if (strEQ(d,"ne")) return -KEY_ne; |
5086 | if (strEQ(d,"not")) return -KEY_not; | |
5087 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5088 | break; |
79072805 LW |
5089 | case 'o': |
5090 | switch (len) { | |
463ee0b2 | 5091 | case 2: |
a0d0e21e | 5092 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5093 | break; |
79072805 | 5094 | case 3: |
a0d0e21e LW |
5095 | if (strEQ(d,"ord")) return -KEY_ord; |
5096 | if (strEQ(d,"oct")) return -KEY_oct; | |
72311751 | 5097 | if (strEQ(d,"our")) { deprecate("reserved word \"our\""); |
85b81015 | 5098 | return 0;} |
79072805 LW |
5099 | break; |
5100 | case 4: | |
a0d0e21e | 5101 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5102 | break; |
5103 | case 7: | |
a0d0e21e | 5104 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5105 | break; |
fe14fcc3 | 5106 | } |
a687059c | 5107 | break; |
79072805 LW |
5108 | case 'p': |
5109 | switch (len) { | |
5110 | case 3: | |
5111 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5112 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5113 | break; |
5114 | case 4: | |
5115 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5116 | if (strEQ(d,"pack")) return -KEY_pack; |
5117 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5118 | break; |
5119 | case 5: | |
5120 | if (strEQ(d,"print")) return KEY_print; | |
5121 | break; | |
5122 | case 6: | |
5123 | if (strEQ(d,"printf")) return KEY_printf; | |
5124 | break; | |
5125 | case 7: | |
5126 | if (strEQ(d,"package")) return KEY_package; | |
5127 | break; | |
c07a80fd | 5128 | case 9: |
5129 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5130 | } |
79072805 LW |
5131 | break; |
5132 | case 'q': | |
5133 | if (len <= 2) { | |
5134 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5135 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5136 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5137 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5138 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5139 | } |
a0d0e21e | 5140 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5141 | break; |
5142 | case 'r': | |
5143 | switch (len) { | |
5144 | case 3: | |
a0d0e21e | 5145 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5146 | break; |
5147 | case 4: | |
a0d0e21e LW |
5148 | if (strEQ(d,"read")) return -KEY_read; |
5149 | if (strEQ(d,"rand")) return -KEY_rand; | |
5150 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5151 | if (strEQ(d,"redo")) return KEY_redo; |
5152 | break; | |
5153 | case 5: | |
a0d0e21e LW |
5154 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5155 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5156 | break; |
5157 | case 6: | |
5158 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5159 | if (strEQ(d,"rename")) return -KEY_rename; |
5160 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5161 | break; |
5162 | case 7: | |
a0d0e21e LW |
5163 | if (strEQ(d,"require")) return -KEY_require; |
5164 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5165 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5166 | break; |
5167 | case 8: | |
a0d0e21e LW |
5168 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5169 | if (strEQ(d,"readline")) return -KEY_readline; | |
5170 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5171 | break; |
5172 | case 9: | |
a0d0e21e | 5173 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5174 | break; |
a687059c | 5175 | } |
79072805 LW |
5176 | break; |
5177 | case 's': | |
a687059c | 5178 | switch (d[1]) { |
79072805 | 5179 | case 0: return KEY_s; |
a687059c | 5180 | case 'c': |
79072805 | 5181 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5182 | break; |
5183 | case 'e': | |
79072805 LW |
5184 | switch (len) { |
5185 | case 4: | |
a0d0e21e LW |
5186 | if (strEQ(d,"seek")) return -KEY_seek; |
5187 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5188 | break; |
5189 | case 5: | |
a0d0e21e | 5190 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5191 | break; |
5192 | case 6: | |
a0d0e21e LW |
5193 | if (strEQ(d,"select")) return -KEY_select; |
5194 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5195 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5196 | break; |
5197 | case 7: | |
a0d0e21e LW |
5198 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5199 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5200 | break; |
5201 | case 8: | |
a0d0e21e LW |
5202 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5203 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5204 | break; |
5205 | case 9: | |
a0d0e21e | 5206 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5207 | break; |
5208 | case 10: | |
a0d0e21e LW |
5209 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5210 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5211 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5212 | break; |
5213 | case 11: | |
a0d0e21e LW |
5214 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5215 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5216 | break; |
5217 | } | |
a687059c LW |
5218 | break; |
5219 | case 'h': | |
79072805 LW |
5220 | switch (len) { |
5221 | case 5: | |
5222 | if (strEQ(d,"shift")) return KEY_shift; | |
5223 | break; | |
5224 | case 6: | |
a0d0e21e LW |
5225 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5226 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5227 | break; |
5228 | case 7: | |
a0d0e21e | 5229 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5230 | break; |
5231 | case 8: | |
a0d0e21e LW |
5232 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5233 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5234 | break; |
5235 | } | |
a687059c LW |
5236 | break; |
5237 | case 'i': | |
a0d0e21e | 5238 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5239 | break; |
5240 | case 'l': | |
a0d0e21e | 5241 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5242 | break; |
5243 | case 'o': | |
79072805 | 5244 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5245 | if (strEQ(d,"socket")) return -KEY_socket; |
5246 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5247 | break; |
5248 | case 'p': | |
79072805 | 5249 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5250 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5251 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5252 | break; |
5253 | case 'q': | |
a0d0e21e | 5254 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5255 | break; |
5256 | case 'r': | |
a0d0e21e | 5257 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5258 | break; |
5259 | case 't': | |
a0d0e21e | 5260 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5261 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5262 | break; |
5263 | case 'u': | |
a0d0e21e | 5264 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5265 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5266 | break; |
5267 | case 'y': | |
79072805 LW |
5268 | switch (len) { |
5269 | case 6: | |
a0d0e21e | 5270 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5271 | break; |
5272 | case 7: | |
a0d0e21e LW |
5273 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5274 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5275 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5276 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5277 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5278 | break; |
5279 | case 8: | |
a0d0e21e | 5280 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5281 | break; |
a687059c | 5282 | } |
a687059c LW |
5283 | break; |
5284 | } | |
5285 | break; | |
79072805 LW |
5286 | case 't': |
5287 | switch (len) { | |
5288 | case 2: | |
5289 | if (strEQ(d,"tr")) return KEY_tr; | |
5290 | break; | |
463ee0b2 LW |
5291 | case 3: |
5292 | if (strEQ(d,"tie")) return KEY_tie; | |
5293 | break; | |
79072805 | 5294 | case 4: |
a0d0e21e | 5295 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5296 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5297 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5298 | break; |
5299 | case 5: | |
a0d0e21e | 5300 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5301 | break; |
5302 | case 7: | |
a0d0e21e | 5303 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5304 | break; |
5305 | case 8: | |
a0d0e21e | 5306 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5307 | break; |
378cc40b | 5308 | } |
a687059c | 5309 | break; |
79072805 LW |
5310 | case 'u': |
5311 | switch (len) { | |
5312 | case 2: | |
a0d0e21e LW |
5313 | if (strEQ(d,"uc")) return -KEY_uc; |
5314 | break; | |
5315 | case 3: | |
5316 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5317 | break; |
5318 | case 5: | |
5319 | if (strEQ(d,"undef")) return KEY_undef; | |
5320 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5321 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5322 | if (strEQ(d,"utime")) return -KEY_utime; |
5323 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5324 | break; |
5325 | case 6: | |
5326 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5327 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5328 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5329 | break; |
5330 | case 7: | |
5331 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5332 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5333 | break; |
a687059c LW |
5334 | } |
5335 | break; | |
79072805 | 5336 | case 'v': |
a0d0e21e LW |
5337 | if (strEQ(d,"values")) return -KEY_values; |
5338 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5339 | break; |
79072805 LW |
5340 | case 'w': |
5341 | switch (len) { | |
5342 | case 4: | |
a0d0e21e LW |
5343 | if (strEQ(d,"warn")) return -KEY_warn; |
5344 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5345 | break; |
5346 | case 5: | |
5347 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5348 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5349 | break; |
5350 | case 7: | |
a0d0e21e | 5351 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5352 | break; |
5353 | case 9: | |
a0d0e21e | 5354 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5355 | break; |
2f3197b3 | 5356 | } |
a687059c | 5357 | break; |
79072805 | 5358 | case 'x': |
a0d0e21e LW |
5359 | if (len == 1) return -KEY_x; |
5360 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5361 | break; |
79072805 LW |
5362 | case 'y': |
5363 | if (len == 1) return KEY_y; | |
5364 | break; | |
5365 | case 'z': | |
a687059c LW |
5366 | break; |
5367 | } | |
79072805 | 5368 | return 0; |
a687059c LW |
5369 | } |
5370 | ||
76e3520e | 5371 | STATIC void |
cea2e8a9 | 5372 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5373 | { |
2f3197b3 LW |
5374 | char *w; |
5375 | ||
d008e5eb GS |
5376 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5377 | dTHR; /* only for ckWARN */ | |
5378 | if (ckWARN(WARN_SYNTAX)) { | |
5379 | int level = 1; | |
5380 | for (w = s+2; *w && level; w++) { | |
5381 | if (*w == '(') | |
5382 | ++level; | |
5383 | else if (*w == ')') | |
5384 | --level; | |
5385 | } | |
5386 | if (*w) | |
5387 | for (; *w && isSPACE(*w); w++) ; | |
5388 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
cea2e8a9 | 5389 | Perl_warner(aTHX_ WARN_SYNTAX, "%s (...) interpreted as function",name); |
d008e5eb | 5390 | } |
2f3197b3 | 5391 | } |
3280af22 | 5392 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5393 | s++; |
a687059c LW |
5394 | if (*s == '(') |
5395 | s++; | |
3280af22 | 5396 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5397 | s++; |
834a4ddd | 5398 | if (isIDFIRST_lazy(s)) { |
2f3197b3 | 5399 | w = s++; |
834a4ddd | 5400 | while (isALNUM_lazy(s)) |
a687059c | 5401 | s++; |
3280af22 | 5402 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5403 | s++; |
e929a76b | 5404 | if (*s == ',') { |
463ee0b2 | 5405 | int kw; |
e929a76b | 5406 | *s = '\0'; |
864dbfa3 | 5407 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5408 | *s = ','; |
463ee0b2 | 5409 | if (kw) |
e929a76b | 5410 | return; |
cea2e8a9 | 5411 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5412 | } |
5413 | } | |
5414 | } | |
5415 | ||
423cee85 JH |
5416 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5417 | Best used as sv=new_constant(..., sv, ...). | |
5418 | If s, pv are NULL, calls subroutine with one argument, | |
5419 | and type is used with error messages only. */ | |
5420 | ||
b3ac6de7 | 5421 | STATIC SV * |
cea2e8a9 | 5422 | S_new_constant(pTHX_ char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type) |
b3ac6de7 | 5423 | { |
b3ac6de7 | 5424 | dSP; |
3280af22 | 5425 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5426 | SV *res; |
b3ac6de7 IZ |
5427 | SV **cvp; |
5428 | SV *cv, *typesv; | |
423cee85 JH |
5429 | char *why, *why1, *why2; |
5430 | ||
5431 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5432 | SV *msg; | |
5433 | ||
5434 | why = "%^H is not localized"; | |
5435 | report_short: | |
5436 | why1 = why2 = ""; | |
5437 | report: | |
5438 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5439 | (type ? type: "undef"), why1, why2, why); | |
5440 | yyerror(SvPVX(msg)); | |
5441 | SvREFCNT_dec(msg); | |
5442 | return sv; | |
5443 | } | |
b3ac6de7 | 5444 | if (!table) { |
423cee85 JH |
5445 | why = "%^H is not defined"; |
5446 | goto report_short; | |
b3ac6de7 IZ |
5447 | } |
5448 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5449 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5450 | why = "} is not defined"; |
5451 | why1 = "$^H{"; | |
5452 | why2 = key; | |
5453 | goto report; | |
b3ac6de7 IZ |
5454 | } |
5455 | sv_2mortal(sv); /* Parent created it permanently */ | |
5456 | cv = *cvp; | |
423cee85 JH |
5457 | if (!pv && s) |
5458 | pv = sv_2mortal(newSVpvn(s, len)); | |
5459 | if (type && pv) | |
5460 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5461 | else |
423cee85 JH |
5462 | typesv = &PL_sv_undef; |
5463 | ||
e788e7d3 | 5464 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5465 | ENTER ; |
5466 | SAVETMPS; | |
5467 | ||
5468 | PUSHMARK(SP) ; | |
25eaa213 | 5469 | EXTEND(sp, 4); |
423cee85 JH |
5470 | if (pv) |
5471 | PUSHs(pv); | |
b3ac6de7 | 5472 | PUSHs(sv); |
423cee85 JH |
5473 | if (pv) |
5474 | PUSHs(typesv); | |
b3ac6de7 IZ |
5475 | PUSHs(cv); |
5476 | PUTBACK; | |
423cee85 JH |
5477 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5478 | ||
5479 | SPAGAIN ; | |
5480 | ||
5481 | /* Check the eval first */ | |
5482 | if (!PL_in_eval && SvTRUE(ERRSV)) | |
5483 | { | |
5484 | STRLEN n_a; | |
5485 | sv_catpv(ERRSV, "Propagated"); | |
5486 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
5487 | POPs ; | |
5488 | res = SvREFCNT_inc(sv); | |
5489 | } | |
5490 | else { | |
5491 | res = POPs; | |
5492 | SvREFCNT_inc(res); | |
5493 | } | |
5494 | ||
5495 | PUTBACK ; | |
5496 | FREETMPS ; | |
5497 | LEAVE ; | |
b3ac6de7 | 5498 | POPSTACK; |
423cee85 | 5499 | |
b3ac6de7 | 5500 | if (!SvOK(res)) { |
423cee85 JH |
5501 | why = "}} did not return a defined value"; |
5502 | why1 = "Call to &{$^H{"; | |
5503 | why2 = key; | |
5504 | sv = res; | |
5505 | goto report; | |
5506 | } | |
5507 | ||
5508 | return res; | |
b3ac6de7 | 5509 | } |
423cee85 | 5510 | |
76e3520e | 5511 | STATIC char * |
cea2e8a9 | 5512 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5513 | { |
5514 | register char *d = dest; | |
8903cb82 | 5515 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5516 | for (;;) { |
8903cb82 | 5517 | if (d >= e) |
cea2e8a9 | 5518 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5519 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5520 | *d++ = *s++; |
834a4ddd | 5521 | else if (*s == '\'' && allow_package && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5522 | *d++ = ':'; |
5523 | *d++ = ':'; | |
5524 | s++; | |
5525 | } | |
c3e0f903 | 5526 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5527 | *d++ = *s++; |
5528 | *d++ = *s++; | |
5529 | } | |
834a4ddd | 5530 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5531 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5532 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5533 | t += UTF8SKIP(t); |
5534 | if (d + (t - s) > e) | |
cea2e8a9 | 5535 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5536 | Copy(s, d, t - s, char); |
5537 | d += t - s; | |
5538 | s = t; | |
5539 | } | |
463ee0b2 LW |
5540 | else { |
5541 | *d = '\0'; | |
5542 | *slp = d - dest; | |
5543 | return s; | |
e929a76b | 5544 | } |
378cc40b LW |
5545 | } |
5546 | } | |
5547 | ||
76e3520e | 5548 | STATIC char * |
cea2e8a9 | 5549 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5550 | { |
5551 | register char *d; | |
8903cb82 | 5552 | register char *e; |
79072805 | 5553 | char *bracket = 0; |
748a9306 | 5554 | char funny = *s++; |
378cc40b | 5555 | |
3280af22 NIS |
5556 | if (PL_lex_brackets == 0) |
5557 | PL_lex_fakebrack = 0; | |
a0d0e21e LW |
5558 | if (isSPACE(*s)) |
5559 | s = skipspace(s); | |
378cc40b | 5560 | d = dest; |
8903cb82 | 5561 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5562 | if (isDIGIT(*s)) { |
8903cb82 | 5563 | while (isDIGIT(*s)) { |
5564 | if (d >= e) | |
cea2e8a9 | 5565 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5566 | *d++ = *s++; |
8903cb82 | 5567 | } |
378cc40b LW |
5568 | } |
5569 | else { | |
463ee0b2 | 5570 | for (;;) { |
8903cb82 | 5571 | if (d >= e) |
cea2e8a9 | 5572 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5573 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5574 | *d++ = *s++; |
834a4ddd | 5575 | else if (*s == '\'' && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5576 | *d++ = ':'; |
5577 | *d++ = ':'; | |
5578 | s++; | |
5579 | } | |
a0d0e21e | 5580 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5581 | *d++ = *s++; |
5582 | *d++ = *s++; | |
5583 | } | |
834a4ddd | 5584 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5585 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5586 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5587 | t += UTF8SKIP(t); |
5588 | if (d + (t - s) > e) | |
cea2e8a9 | 5589 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5590 | Copy(s, d, t - s, char); |
5591 | d += t - s; | |
5592 | s = t; | |
5593 | } | |
463ee0b2 LW |
5594 | else |
5595 | break; | |
5596 | } | |
378cc40b LW |
5597 | } |
5598 | *d = '\0'; | |
5599 | d = dest; | |
79072805 | 5600 | if (*d) { |
3280af22 NIS |
5601 | if (PL_lex_state != LEX_NORMAL) |
5602 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5603 | return s; |
378cc40b | 5604 | } |
748a9306 | 5605 | if (*s == '$' && s[1] && |
834a4ddd | 5606 | (isALNUM_lazy(s+1) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5607 | { |
4810e5ec | 5608 | return s; |
5cd24f17 | 5609 | } |
79072805 LW |
5610 | if (*s == '{') { |
5611 | bracket = s; | |
5612 | s++; | |
5613 | } | |
5614 | else if (ck_uni) | |
5615 | check_uni(); | |
93a17b20 | 5616 | if (s < send) |
79072805 LW |
5617 | *d = *s++; |
5618 | d[1] = '\0'; | |
2b92dfce | 5619 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5620 | *d = toCTRL(*s); |
5621 | s++; | |
de3bb511 | 5622 | } |
79072805 | 5623 | if (bracket) { |
748a9306 | 5624 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5625 | while (s < send) { |
5626 | char ch = *s++; | |
5627 | if (ch != ' ' && ch != '\t') { | |
5628 | *d = ch; | |
5629 | break; | |
5630 | } | |
5631 | } | |
748a9306 | 5632 | } |
834a4ddd | 5633 | if (isIDFIRST_lazy(d)) { |
79072805 | 5634 | d++; |
a0ed51b3 LW |
5635 | if (UTF) { |
5636 | e = s; | |
834a4ddd | 5637 | while (e < send && isALNUM_lazy(e) || *e == ':') { |
a0ed51b3 | 5638 | e += UTF8SKIP(e); |
dfe13c55 | 5639 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5640 | e += UTF8SKIP(e); |
5641 | } | |
5642 | Copy(s, d, e - s, char); | |
5643 | d += e - s; | |
5644 | s = e; | |
5645 | } | |
5646 | else { | |
2b92dfce | 5647 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5648 | *d++ = *s++; |
2b92dfce | 5649 | if (d >= e) |
cea2e8a9 | 5650 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5651 | } |
79072805 | 5652 | *d = '\0'; |
748a9306 | 5653 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5654 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5655 | dTHR; /* only for ckWARN */ |
599cee73 | 5656 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
748a9306 | 5657 | char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5658 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5659 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5660 | funny, dest, brack, funny, dest, brack); |
5661 | } | |
3280af22 | 5662 | PL_lex_fakebrack = PL_lex_brackets+1; |
79072805 | 5663 | bracket++; |
3280af22 | 5664 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 LW |
5665 | return s; |
5666 | } | |
2b92dfce GS |
5667 | } |
5668 | /* Handle extended ${^Foo} variables | |
5669 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5670 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5671 | && isALNUM(*s)) | |
5672 | { | |
5673 | d++; | |
5674 | while (isALNUM(*s) && d < e) { | |
5675 | *d++ = *s++; | |
5676 | } | |
5677 | if (d >= e) | |
cea2e8a9 | 5678 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5679 | *d = '\0'; |
79072805 LW |
5680 | } |
5681 | if (*s == '}') { | |
5682 | s++; | |
3280af22 NIS |
5683 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5684 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5685 | if (funny == '#') |
5686 | funny = '@'; | |
d008e5eb GS |
5687 | if (PL_lex_state == LEX_NORMAL) { |
5688 | dTHR; /* only for ckWARN */ | |
5689 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5690 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5691 | { |
cea2e8a9 | 5692 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5693 | "Ambiguous use of %c{%s} resolved to %c%s", |
5694 | funny, dest, funny, dest); | |
5695 | } | |
5696 | } | |
79072805 LW |
5697 | } |
5698 | else { | |
5699 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5700 | *dest = '\0'; |
79072805 LW |
5701 | } |
5702 | } | |
3280af22 NIS |
5703 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5704 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5705 | return s; |
5706 | } | |
5707 | ||
cea2e8a9 GS |
5708 | void |
5709 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5710 | { |
bbce6d69 | 5711 | if (ch == 'i') |
a0d0e21e | 5712 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5713 | else if (ch == 'g') |
5714 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5715 | else if (ch == 'c') |
5716 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5717 | else if (ch == 'o') |
5718 | *pmfl |= PMf_KEEP; | |
5719 | else if (ch == 'm') | |
5720 | *pmfl |= PMf_MULTILINE; | |
5721 | else if (ch == 's') | |
5722 | *pmfl |= PMf_SINGLELINE; | |
5723 | else if (ch == 'x') | |
5724 | *pmfl |= PMf_EXTENDED; | |
5725 | } | |
378cc40b | 5726 | |
76e3520e | 5727 | STATIC char * |
cea2e8a9 | 5728 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5729 | { |
79072805 LW |
5730 | PMOP *pm; |
5731 | char *s; | |
378cc40b | 5732 | |
09bef843 | 5733 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5734 | if (!s) { |
3280af22 NIS |
5735 | if (PL_lex_stuff) |
5736 | SvREFCNT_dec(PL_lex_stuff); | |
5737 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5738 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5739 | } |
bbce6d69 | 5740 | |
8782bef2 | 5741 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5742 | if (PL_multi_open == '?') |
79072805 | 5743 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5744 | if(type == OP_QR) { |
5745 | while (*s && strchr("iomsx", *s)) | |
5746 | pmflag(&pm->op_pmflags,*s++); | |
5747 | } | |
5748 | else { | |
5749 | while (*s && strchr("iogcmsx", *s)) | |
5750 | pmflag(&pm->op_pmflags,*s++); | |
5751 | } | |
4633a7c4 | 5752 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5753 | |
3280af22 | 5754 | PL_lex_op = (OP*)pm; |
79072805 | 5755 | yylval.ival = OP_MATCH; |
378cc40b LW |
5756 | return s; |
5757 | } | |
5758 | ||
76e3520e | 5759 | STATIC char * |
cea2e8a9 | 5760 | S_scan_subst(pTHX_ char *start) |
79072805 | 5761 | { |
a0d0e21e | 5762 | register char *s; |
79072805 | 5763 | register PMOP *pm; |
4fdae800 | 5764 | I32 first_start; |
79072805 LW |
5765 | I32 es = 0; |
5766 | ||
79072805 LW |
5767 | yylval.ival = OP_NULL; |
5768 | ||
09bef843 | 5769 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5770 | |
5771 | if (!s) { | |
3280af22 NIS |
5772 | if (PL_lex_stuff) |
5773 | SvREFCNT_dec(PL_lex_stuff); | |
5774 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5775 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5776 | } |
79072805 | 5777 | |
3280af22 | 5778 | if (s[-1] == PL_multi_open) |
79072805 LW |
5779 | s--; |
5780 | ||
3280af22 | 5781 | first_start = PL_multi_start; |
09bef843 | 5782 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5783 | if (!s) { |
3280af22 NIS |
5784 | if (PL_lex_stuff) |
5785 | SvREFCNT_dec(PL_lex_stuff); | |
5786 | PL_lex_stuff = Nullsv; | |
5787 | if (PL_lex_repl) | |
5788 | SvREFCNT_dec(PL_lex_repl); | |
5789 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5790 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 5791 | } |
3280af22 | 5792 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5793 | |
79072805 | 5794 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5795 | while (*s) { |
a687059c LW |
5796 | if (*s == 'e') { |
5797 | s++; | |
2f3197b3 | 5798 | es++; |
a687059c | 5799 | } |
b3eb6a9b | 5800 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5801 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5802 | else |
5803 | break; | |
378cc40b | 5804 | } |
79072805 LW |
5805 | |
5806 | if (es) { | |
5807 | SV *repl; | |
0244c3a4 GS |
5808 | PL_sublex_info.super_bufptr = s; |
5809 | PL_sublex_info.super_bufend = PL_bufend; | |
5810 | PL_multi_end = 0; | |
79072805 | 5811 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 5812 | repl = newSVpvn("",0); |
463ee0b2 | 5813 | while (es-- > 0) |
a0d0e21e | 5814 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5815 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5816 | sv_catsv(repl, PL_lex_repl); |
79072805 | 5817 | sv_catpvn(repl, " };", 2); |
25da4f38 | 5818 | SvEVALED_on(repl); |
3280af22 NIS |
5819 | SvREFCNT_dec(PL_lex_repl); |
5820 | PL_lex_repl = repl; | |
378cc40b | 5821 | } |
79072805 | 5822 | |
4633a7c4 | 5823 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5824 | PL_lex_op = (OP*)pm; |
79072805 | 5825 | yylval.ival = OP_SUBST; |
378cc40b LW |
5826 | return s; |
5827 | } | |
5828 | ||
76e3520e | 5829 | STATIC char * |
cea2e8a9 | 5830 | S_scan_trans(pTHX_ char *start) |
378cc40b | 5831 | { |
a0d0e21e | 5832 | register char* s; |
11343788 | 5833 | OP *o; |
79072805 LW |
5834 | short *tbl; |
5835 | I32 squash; | |
a0ed51b3 | 5836 | I32 del; |
79072805 | 5837 | I32 complement; |
a0ed51b3 LW |
5838 | I32 utf8; |
5839 | I32 count = 0; | |
79072805 LW |
5840 | |
5841 | yylval.ival = OP_NULL; | |
5842 | ||
09bef843 | 5843 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5844 | if (!s) { |
3280af22 NIS |
5845 | if (PL_lex_stuff) |
5846 | SvREFCNT_dec(PL_lex_stuff); | |
5847 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5848 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 5849 | } |
3280af22 | 5850 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5851 | s--; |
5852 | ||
09bef843 | 5853 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5854 | if (!s) { |
3280af22 NIS |
5855 | if (PL_lex_stuff) |
5856 | SvREFCNT_dec(PL_lex_stuff); | |
5857 | PL_lex_stuff = Nullsv; | |
5858 | if (PL_lex_repl) | |
5859 | SvREFCNT_dec(PL_lex_repl); | |
5860 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5861 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 5862 | } |
79072805 | 5863 | |
a0ed51b3 LW |
5864 | if (UTF) { |
5865 | o = newSVOP(OP_TRANS, 0, 0); | |
5866 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
5867 | } | |
5868 | else { | |
5869 | New(803,tbl,256,short); | |
5870 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
5871 | utf8 = 0; | |
5872 | } | |
2f3197b3 | 5873 | |
a0ed51b3 LW |
5874 | complement = del = squash = 0; |
5875 | while (strchr("cdsCU", *s)) { | |
395c3793 | 5876 | if (*s == 'c') |
79072805 | 5877 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 5878 | else if (*s == 'd') |
a0ed51b3 LW |
5879 | del = OPpTRANS_DELETE; |
5880 | else if (*s == 's') | |
79072805 | 5881 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
5882 | else { |
5883 | switch (count++) { | |
5884 | case 0: | |
5885 | if (*s == 'C') | |
5886 | utf8 &= ~OPpTRANS_FROM_UTF; | |
5887 | else | |
5888 | utf8 |= OPpTRANS_FROM_UTF; | |
5889 | break; | |
5890 | case 1: | |
5891 | if (*s == 'C') | |
5892 | utf8 &= ~OPpTRANS_TO_UTF; | |
5893 | else | |
5894 | utf8 |= OPpTRANS_TO_UTF; | |
5895 | break; | |
5896 | default: | |
cea2e8a9 | 5897 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
5898 | } |
5899 | } | |
395c3793 LW |
5900 | s++; |
5901 | } | |
a0ed51b3 | 5902 | o->op_private = del|squash|complement|utf8; |
79072805 | 5903 | |
3280af22 | 5904 | PL_lex_op = o; |
79072805 LW |
5905 | yylval.ival = OP_TRANS; |
5906 | return s; | |
5907 | } | |
5908 | ||
76e3520e | 5909 | STATIC char * |
cea2e8a9 | 5910 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 5911 | { |
11343788 | 5912 | dTHR; |
79072805 LW |
5913 | SV *herewas; |
5914 | I32 op_type = OP_SCALAR; | |
5915 | I32 len; | |
5916 | SV *tmpstr; | |
5917 | char term; | |
5918 | register char *d; | |
fc36a67e | 5919 | register char *e; |
4633a7c4 | 5920 | char *peek; |
3280af22 | 5921 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
5922 | |
5923 | s += 2; | |
3280af22 NIS |
5924 | d = PL_tokenbuf; |
5925 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 5926 | if (!outer) |
79072805 | 5927 | *d++ = '\n'; |
4633a7c4 LW |
5928 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
5929 | if (*peek && strchr("`'\"",*peek)) { | |
5930 | s = peek; | |
79072805 | 5931 | term = *s++; |
3280af22 | 5932 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 5933 | d += len; |
3280af22 | 5934 | if (s < PL_bufend) |
79072805 | 5935 | s++; |
79072805 LW |
5936 | } |
5937 | else { | |
5938 | if (*s == '\\') | |
5939 | s++, term = '\''; | |
5940 | else | |
5941 | term = '"'; | |
834a4ddd | 5942 | if (!isALNUM_lazy(s)) |
4633a7c4 | 5943 | deprecate("bare << to mean <<\"\""); |
834a4ddd | 5944 | for (; isALNUM_lazy(s); s++) { |
fc36a67e | 5945 | if (d < e) |
5946 | *d++ = *s; | |
5947 | } | |
5948 | } | |
3280af22 | 5949 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 5950 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
5951 | *d++ = '\n'; |
5952 | *d = '\0'; | |
3280af22 | 5953 | len = d - PL_tokenbuf; |
6a27c188 | 5954 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
5955 | d = strchr(s, '\r'); |
5956 | if (d) { | |
5957 | char *olds = s; | |
5958 | s = d; | |
3280af22 | 5959 | while (s < PL_bufend) { |
f63a84b2 LW |
5960 | if (*s == '\r') { |
5961 | *d++ = '\n'; | |
5962 | if (*++s == '\n') | |
5963 | s++; | |
5964 | } | |
5965 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
5966 | *d++ = *s++; | |
5967 | s++; | |
5968 | } | |
5969 | else | |
5970 | *d++ = *s++; | |
5971 | } | |
5972 | *d = '\0'; | |
3280af22 NIS |
5973 | PL_bufend = d; |
5974 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
5975 | s = olds; |
5976 | } | |
5977 | #endif | |
79072805 | 5978 | d = "\n"; |
3280af22 | 5979 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 5980 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 5981 | else |
79cb57f6 | 5982 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 5983 | s += SvCUR(herewas); |
748a9306 | 5984 | |
8d6dde3e | 5985 | tmpstr = NEWSV(87,79); |
748a9306 LW |
5986 | sv_upgrade(tmpstr, SVt_PVIV); |
5987 | if (term == '\'') { | |
79072805 | 5988 | op_type = OP_CONST; |
748a9306 LW |
5989 | SvIVX(tmpstr) = -1; |
5990 | } | |
5991 | else if (term == '`') { | |
79072805 | 5992 | op_type = OP_BACKTICK; |
748a9306 LW |
5993 | SvIVX(tmpstr) = '\\'; |
5994 | } | |
79072805 LW |
5995 | |
5996 | CLINE; | |
3280af22 NIS |
5997 | PL_multi_start = PL_curcop->cop_line; |
5998 | PL_multi_open = PL_multi_close = '<'; | |
5999 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6000 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6001 | char *bufptr = PL_sublex_info.super_bufptr; | |
6002 | char *bufend = PL_sublex_info.super_bufend; | |
6003 | char *olds = s - SvCUR(herewas); | |
6004 | s = strchr(bufptr, '\n'); | |
6005 | if (!s) | |
6006 | s = bufend; | |
6007 | d = s; | |
6008 | while (s < bufend && | |
6009 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6010 | if (*s++ == '\n') | |
6011 | PL_curcop->cop_line++; | |
6012 | } | |
6013 | if (s >= bufend) { | |
6014 | PL_curcop->cop_line = PL_multi_start; | |
6015 | missingterm(PL_tokenbuf); | |
6016 | } | |
6017 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6018 | sv_setpvn(tmpstr,d+1,s-d); | |
6019 | s += len - 1; | |
6020 | sv_catpvn(herewas,s,bufend-s); | |
6021 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6022 | ||
6023 | s = olds; | |
6024 | goto retval; | |
6025 | } | |
6026 | else if (!outer) { | |
79072805 | 6027 | d = s; |
3280af22 NIS |
6028 | while (s < PL_bufend && |
6029 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6030 | if (*s++ == '\n') |
3280af22 | 6031 | PL_curcop->cop_line++; |
79072805 | 6032 | } |
3280af22 NIS |
6033 | if (s >= PL_bufend) { |
6034 | PL_curcop->cop_line = PL_multi_start; | |
6035 | missingterm(PL_tokenbuf); | |
79072805 LW |
6036 | } |
6037 | sv_setpvn(tmpstr,d+1,s-d); | |
6038 | s += len - 1; | |
3280af22 | 6039 | PL_curcop->cop_line++; /* the preceding stmt passes a newline */ |
49d8d3a1 | 6040 | |
3280af22 NIS |
6041 | sv_catpvn(herewas,s,PL_bufend-s); |
6042 | sv_setsv(PL_linestr,herewas); | |
6043 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6044 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6045 | } |
6046 | else | |
6047 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6048 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6049 | if (!outer || |
3280af22 NIS |
6050 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
6051 | PL_curcop->cop_line = PL_multi_start; | |
6052 | missingterm(PL_tokenbuf); | |
79072805 | 6053 | } |
3280af22 NIS |
6054 | PL_curcop->cop_line++; |
6055 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
6a27c188 | 6056 | #ifndef PERL_STRICT_CR |
3280af22 | 6057 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6058 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6059 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6060 | { |
3280af22 NIS |
6061 | PL_bufend[-2] = '\n'; |
6062 | PL_bufend--; | |
6063 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6064 | } |
3280af22 NIS |
6065 | else if (PL_bufend[-1] == '\r') |
6066 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6067 | } |
3280af22 NIS |
6068 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6069 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6070 | #endif |
3280af22 | 6071 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6072 | SV *sv = NEWSV(88,0); |
6073 | ||
93a17b20 | 6074 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
6075 | sv_setsv(sv,PL_linestr); |
6076 | av_store(GvAV(PL_curcop->cop_filegv), | |
6077 | (I32)PL_curcop->cop_line,sv); | |
79072805 | 6078 | } |
3280af22 NIS |
6079 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6080 | s = PL_bufend - 1; | |
79072805 | 6081 | *s = ' '; |
3280af22 NIS |
6082 | sv_catsv(PL_linestr,herewas); |
6083 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6084 | } |
6085 | else { | |
3280af22 NIS |
6086 | s = PL_bufend; |
6087 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6088 | } |
6089 | } | |
79072805 | 6090 | s++; |
0244c3a4 GS |
6091 | retval: |
6092 | PL_multi_end = PL_curcop->cop_line; | |
79072805 LW |
6093 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6094 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6095 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6096 | } |
8990e307 | 6097 | SvREFCNT_dec(herewas); |
3280af22 | 6098 | PL_lex_stuff = tmpstr; |
79072805 LW |
6099 | yylval.ival = op_type; |
6100 | return s; | |
6101 | } | |
6102 | ||
02aa26ce NT |
6103 | /* scan_inputsymbol |
6104 | takes: current position in input buffer | |
6105 | returns: new position in input buffer | |
6106 | side-effects: yylval and lex_op are set. | |
6107 | ||
6108 | This code handles: | |
6109 | ||
6110 | <> read from ARGV | |
6111 | <FH> read from filehandle | |
6112 | <pkg::FH> read from package qualified filehandle | |
6113 | <pkg'FH> read from package qualified filehandle | |
6114 | <$fh> read from filehandle in $fh | |
6115 | <*.h> filename glob | |
6116 | ||
6117 | */ | |
6118 | ||
76e3520e | 6119 | STATIC char * |
cea2e8a9 | 6120 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6121 | { |
02aa26ce | 6122 | register char *s = start; /* current position in buffer */ |
79072805 | 6123 | register char *d; |
fc36a67e | 6124 | register char *e; |
1b420867 | 6125 | char *end; |
79072805 LW |
6126 | I32 len; |
6127 | ||
3280af22 NIS |
6128 | d = PL_tokenbuf; /* start of temp holding space */ |
6129 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6130 | end = strchr(s, '\n'); |
6131 | if (!end) | |
6132 | end = PL_bufend; | |
6133 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6134 | |
6135 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6136 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6137 | */ |
6138 | ||
3280af22 | 6139 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6140 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6141 | if (s >= end) |
cea2e8a9 | 6142 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6143 | |
fc36a67e | 6144 | s++; |
02aa26ce NT |
6145 | |
6146 | /* check for <$fh> | |
6147 | Remember, only scalar variables are interpreted as filehandles by | |
6148 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6149 | treated as a glob() call. | |
6150 | This code makes use of the fact that except for the $ at the front, | |
6151 | a scalar variable and a filehandle look the same. | |
6152 | */ | |
4633a7c4 | 6153 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6154 | |
6155 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
834a4ddd | 6156 | while (*d && (isALNUM_lazy(d) || *d == '\'' || *d == ':')) |
79072805 | 6157 | d++; |
02aa26ce NT |
6158 | |
6159 | /* If we've tried to read what we allow filehandles to look like, and | |
6160 | there's still text left, then it must be a glob() and not a getline. | |
6161 | Use scan_str to pull out the stuff between the <> and treat it | |
6162 | as nothing more than a string. | |
6163 | */ | |
6164 | ||
3280af22 | 6165 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6166 | yylval.ival = OP_GLOB; |
6167 | set_csh(); | |
09bef843 | 6168 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6169 | if (!s) |
cea2e8a9 | 6170 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6171 | return s; |
6172 | } | |
395c3793 | 6173 | else { |
02aa26ce | 6174 | /* we're in a filehandle read situation */ |
3280af22 | 6175 | d = PL_tokenbuf; |
02aa26ce NT |
6176 | |
6177 | /* turn <> into <ARGV> */ | |
79072805 LW |
6178 | if (!len) |
6179 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6180 | |
6181 | /* if <$fh>, create the ops to turn the variable into a | |
6182 | filehandle | |
6183 | */ | |
79072805 | 6184 | if (*d == '$') { |
a0d0e21e | 6185 | I32 tmp; |
02aa26ce NT |
6186 | |
6187 | /* try to find it in the pad for this block, otherwise find | |
6188 | add symbol table ops | |
6189 | */ | |
11343788 MB |
6190 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6191 | OP *o = newOP(OP_PADSV, 0); | |
6192 | o->op_targ = tmp; | |
f5284f61 | 6193 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6194 | } |
6195 | else { | |
6196 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6197 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6198 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6199 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6200 | } |
f5284f61 IZ |
6201 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6202 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6203 | yylval.ival = OP_NULL; |
6204 | } | |
02aa26ce NT |
6205 | |
6206 | /* If it's none of the above, it must be a literal filehandle | |
6207 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6208 | else { |
85e6fe83 | 6209 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6210 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6211 | yylval.ival = OP_NULL; |
6212 | } | |
6213 | } | |
02aa26ce | 6214 | |
79072805 LW |
6215 | return s; |
6216 | } | |
6217 | ||
02aa26ce NT |
6218 | |
6219 | /* scan_str | |
6220 | takes: start position in buffer | |
09bef843 SB |
6221 | keep_quoted preserve \ on the embedded delimiter(s) |
6222 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6223 | returns: position to continue reading from buffer |
6224 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6225 | updates the read buffer. | |
6226 | ||
6227 | This subroutine pulls a string out of the input. It is called for: | |
6228 | q single quotes q(literal text) | |
6229 | ' single quotes 'literal text' | |
6230 | qq double quotes qq(interpolate $here please) | |
6231 | " double quotes "interpolate $here please" | |
6232 | qx backticks qx(/bin/ls -l) | |
6233 | ` backticks `/bin/ls -l` | |
6234 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6235 | m// regexp match m/this/ | |
6236 | s/// regexp substitute s/this/that/ | |
6237 | tr/// string transliterate tr/this/that/ | |
6238 | y/// string transliterate y/this/that/ | |
6239 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6240 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6241 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6242 | ||
6243 | In most of these cases (all but <>, patterns and transliterate) | |
6244 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6245 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6246 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6247 | calls scan_str(). | |
6248 | ||
6249 | It skips whitespace before the string starts, and treats the first | |
6250 | character as the delimiter. If the delimiter is one of ([{< then | |
6251 | the corresponding "close" character )]}> is used as the closing | |
6252 | delimiter. It allows quoting of delimiters, and if the string has | |
6253 | balanced delimiters ([{<>}]) it allows nesting. | |
6254 | ||
6255 | The lexer always reads these strings into lex_stuff, except in the | |
6256 | case of the operators which take *two* arguments (s/// and tr///) | |
6257 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6258 | arg to s or tr) and if so puts the string into lex_repl. | |
6259 | ||
6260 | */ | |
6261 | ||
76e3520e | 6262 | STATIC char * |
09bef843 | 6263 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6264 | { |
11343788 | 6265 | dTHR; |
02aa26ce NT |
6266 | SV *sv; /* scalar value: string */ |
6267 | char *tmps; /* temp string, used for delimiter matching */ | |
6268 | register char *s = start; /* current position in the buffer */ | |
6269 | register char term; /* terminating character */ | |
6270 | register char *to; /* current position in the sv's data */ | |
6271 | I32 brackets = 1; /* bracket nesting level */ | |
6272 | ||
6273 | /* skip space before the delimiter */ | |
fb73857a | 6274 | if (isSPACE(*s)) |
6275 | s = skipspace(s); | |
02aa26ce NT |
6276 | |
6277 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6278 | CLINE; |
02aa26ce NT |
6279 | |
6280 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6281 | term = *s; |
02aa26ce | 6282 | /* mark where we are */ |
3280af22 NIS |
6283 | PL_multi_start = PL_curcop->cop_line; |
6284 | PL_multi_open = term; | |
02aa26ce NT |
6285 | |
6286 | /* find corresponding closing delimiter */ | |
93a17b20 | 6287 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6288 | term = tmps[5]; |
3280af22 | 6289 | PL_multi_close = term; |
79072805 | 6290 | |
02aa26ce | 6291 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6292 | assuming. 79 is the SV's initial length. What a random number. */ |
6293 | sv = NEWSV(87,79); | |
ed6116ce LW |
6294 | sv_upgrade(sv, SVt_PVIV); |
6295 | SvIVX(sv) = term; | |
a0d0e21e | 6296 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6297 | |
6298 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6299 | if (keep_delims) |
6300 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6301 | s++; |
6302 | for (;;) { | |
02aa26ce | 6303 | /* extend sv if need be */ |
3280af22 | 6304 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6305 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6306 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6307 | |
02aa26ce | 6308 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6309 | if (PL_multi_open == PL_multi_close) { |
6310 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6311 | /* embedded newlines increment the current line number */ |
3280af22 NIS |
6312 | if (*s == '\n' && !PL_rsfp) |
6313 | PL_curcop->cop_line++; | |
02aa26ce | 6314 | /* handle quoted delimiters */ |
3280af22 | 6315 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6316 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6317 | s++; |
02aa26ce | 6318 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6319 | else |
6320 | *to++ = *s++; | |
6321 | } | |
02aa26ce NT |
6322 | /* terminate when run out of buffer (the for() condition), or |
6323 | have found the terminator */ | |
93a17b20 LW |
6324 | else if (*s == term) |
6325 | break; | |
6326 | *to = *s; | |
6327 | } | |
6328 | } | |
02aa26ce NT |
6329 | |
6330 | /* if the terminator isn't the same as the start character (e.g., | |
6331 | matched brackets), we have to allow more in the quoting, and | |
6332 | be prepared for nested brackets. | |
6333 | */ | |
93a17b20 | 6334 | else { |
02aa26ce | 6335 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6336 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6337 | /* embedded newlines increment the line count */ |
3280af22 NIS |
6338 | if (*s == '\n' && !PL_rsfp) |
6339 | PL_curcop->cop_line++; | |
02aa26ce | 6340 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6341 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6342 | if (!keep_quoted && |
6343 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6344 | s++; |
6345 | else | |
6346 | *to++ = *s++; | |
6347 | } | |
02aa26ce | 6348 | /* allow nested opens and closes */ |
3280af22 | 6349 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6350 | break; |
3280af22 | 6351 | else if (*s == PL_multi_open) |
93a17b20 LW |
6352 | brackets++; |
6353 | *to = *s; | |
6354 | } | |
6355 | } | |
02aa26ce | 6356 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6357 | *to = '\0'; |
463ee0b2 | 6358 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6359 | |
02aa26ce NT |
6360 | /* |
6361 | * this next chunk reads more into the buffer if we're not done yet | |
6362 | */ | |
6363 | ||
3280af22 | 6364 | if (s < PL_bufend) break; /* handle case where we are done yet :-) */ |
79072805 | 6365 | |
6a27c188 | 6366 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6367 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6368 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6369 | (to[-2] == '\n' && to[-1] == '\r')) | |
6370 | { | |
f63a84b2 LW |
6371 | to[-2] = '\n'; |
6372 | to--; | |
6373 | SvCUR_set(sv, to - SvPVX(sv)); | |
6374 | } | |
6375 | else if (to[-1] == '\r') | |
6376 | to[-1] = '\n'; | |
6377 | } | |
6378 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6379 | to[-1] = '\n'; | |
6380 | #endif | |
6381 | ||
02aa26ce NT |
6382 | /* if we're out of file, or a read fails, bail and reset the current |
6383 | line marker so we can report where the unterminated string began | |
6384 | */ | |
3280af22 NIS |
6385 | if (!PL_rsfp || |
6386 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6387 | sv_free(sv); |
3280af22 | 6388 | PL_curcop->cop_line = PL_multi_start; |
79072805 LW |
6389 | return Nullch; |
6390 | } | |
02aa26ce | 6391 | /* we read a line, so increment our line counter */ |
3280af22 | 6392 | PL_curcop->cop_line++; |
a0ed51b3 | 6393 | |
02aa26ce | 6394 | /* update debugger info */ |
3280af22 | 6395 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6396 | SV *sv = NEWSV(88,0); |
6397 | ||
93a17b20 | 6398 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
6399 | sv_setsv(sv,PL_linestr); |
6400 | av_store(GvAV(PL_curcop->cop_filegv), | |
6401 | (I32)PL_curcop->cop_line, sv); | |
395c3793 | 6402 | } |
a0ed51b3 | 6403 | |
3280af22 NIS |
6404 | /* having changed the buffer, we must update PL_bufend */ |
6405 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6406 | } |
02aa26ce NT |
6407 | |
6408 | /* at this point, we have successfully read the delimited string */ | |
6409 | ||
09bef843 SB |
6410 | if (keep_delims) |
6411 | sv_catpvn(sv, s, 1); | |
3280af22 | 6412 | PL_multi_end = PL_curcop->cop_line; |
79072805 | 6413 | s++; |
02aa26ce NT |
6414 | |
6415 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6416 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6417 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6418 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6419 | } |
02aa26ce NT |
6420 | |
6421 | /* decide whether this is the first or second quoted string we've read | |
6422 | for this op | |
6423 | */ | |
6424 | ||
3280af22 NIS |
6425 | if (PL_lex_stuff) |
6426 | PL_lex_repl = sv; | |
79072805 | 6427 | else |
3280af22 | 6428 | PL_lex_stuff = sv; |
378cc40b LW |
6429 | return s; |
6430 | } | |
6431 | ||
02aa26ce NT |
6432 | /* |
6433 | scan_num | |
6434 | takes: pointer to position in buffer | |
6435 | returns: pointer to new position in buffer | |
6436 | side-effects: builds ops for the constant in yylval.op | |
6437 | ||
6438 | Read a number in any of the formats that Perl accepts: | |
6439 | ||
4f19785b | 6440 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6441 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6442 | ||
6443 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6444 | underbars before a decimal point must be at three digit intervals. | |
6445 | ||
3280af22 | 6446 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6447 | thing it reads. |
6448 | ||
6449 | If it reads a number without a decimal point or an exponent, it will | |
6450 | try converting the number to an integer and see if it can do so | |
6451 | without loss of precision. | |
6452 | */ | |
6453 | ||
378cc40b | 6454 | char * |
864dbfa3 | 6455 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6456 | { |
02aa26ce NT |
6457 | register char *s = start; /* current position in buffer */ |
6458 | register char *d; /* destination in temp buffer */ | |
6459 | register char *e; /* end of temp buffer */ | |
b8403495 | 6460 | IV tryiv; /* used to see if it can be an IV */ |
65202027 | 6461 | NV value; /* number read, as a double */ |
02aa26ce | 6462 | SV *sv; /* place to put the converted number */ |
b8403495 | 6463 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6464 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6465 | static char number_too_long[] = "Number too long"; |
378cc40b | 6466 | |
02aa26ce NT |
6467 | /* We use the first character to decide what type of number this is */ |
6468 | ||
378cc40b | 6469 | switch (*s) { |
79072805 | 6470 | default: |
cea2e8a9 | 6471 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6472 | |
6473 | /* if it starts with a 0, it could be an octal number, a decimal in | |
4f19785b | 6474 | 0.13 disguise, or a hexadecimal number, or a binary number. |
02aa26ce | 6475 | */ |
378cc40b LW |
6476 | case '0': |
6477 | { | |
02aa26ce NT |
6478 | /* variables: |
6479 | u holds the "number so far" | |
4f19785b WSI |
6480 | shift the power of 2 of the base |
6481 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6482 | overflowed was the number more than we can hold? |
6483 | ||
6484 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6485 | we in octal/hex/binary?" indicator to disallow hex characters |
6486 | when in octal mode. | |
02aa26ce | 6487 | */ |
f248d071 | 6488 | dTHR; |
9e24b6e2 JH |
6489 | NV n = 0.0; |
6490 | UV u = 0; | |
79072805 | 6491 | I32 shift; |
9e24b6e2 JH |
6492 | bool overflowed = FALSE; |
6493 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6494 | static char* bases[5] = { "", "binary", "", "octal", | |
6495 | "hexadecimal" }; | |
6496 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6497 | "Hexadecimal" }; | |
6498 | static char *maxima[5] = { "", | |
6499 | "0b11111111111111111111111111111111", | |
6500 | "", | |
893fe2c2 | 6501 | "037777777777", |
9e24b6e2 JH |
6502 | "0xffffffff" }; |
6503 | char *base, *Base, *max; | |
378cc40b | 6504 | |
02aa26ce | 6505 | /* check for hex */ |
378cc40b LW |
6506 | if (s[1] == 'x') { |
6507 | shift = 4; | |
6508 | s += 2; | |
4f19785b WSI |
6509 | } else if (s[1] == 'b') { |
6510 | shift = 1; | |
6511 | s += 2; | |
378cc40b | 6512 | } |
02aa26ce | 6513 | /* check for a decimal in disguise */ |
09bef843 | 6514 | else if (strchr(".Ee", s[1])) |
378cc40b | 6515 | goto decimal; |
02aa26ce | 6516 | /* so it must be octal */ |
378cc40b LW |
6517 | else |
6518 | shift = 3; | |
9e24b6e2 JH |
6519 | |
6520 | base = bases[shift]; | |
6521 | Base = Bases[shift]; | |
6522 | max = maxima[shift]; | |
02aa26ce | 6523 | |
4f19785b | 6524 | /* read the rest of the number */ |
378cc40b | 6525 | for (;;) { |
9e24b6e2 | 6526 | /* x is used in the overflow test, |
893fe2c2 | 6527 | b is the digit we're adding on. */ |
9e24b6e2 | 6528 | UV x, b; |
55497cff | 6529 | |
378cc40b | 6530 | switch (*s) { |
02aa26ce NT |
6531 | |
6532 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6533 | default: |
6534 | goto out; | |
02aa26ce NT |
6535 | |
6536 | /* _ are ignored */ | |
de3bb511 LW |
6537 | case '_': |
6538 | s++; | |
6539 | break; | |
02aa26ce NT |
6540 | |
6541 | /* 8 and 9 are not octal */ | |
378cc40b | 6542 | case '8': case '9': |
4f19785b | 6543 | if (shift == 3) |
cea2e8a9 | 6544 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6545 | /* FALL THROUGH */ |
02aa26ce NT |
6546 | |
6547 | /* octal digits */ | |
4f19785b | 6548 | case '2': case '3': case '4': |
378cc40b | 6549 | case '5': case '6': case '7': |
4f19785b | 6550 | if (shift == 1) |
cea2e8a9 | 6551 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6552 | /* FALL THROUGH */ |
6553 | ||
6554 | case '0': case '1': | |
02aa26ce | 6555 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6556 | goto digit; |
02aa26ce NT |
6557 | |
6558 | /* hex digits */ | |
378cc40b LW |
6559 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6560 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6561 | /* make sure they said 0x */ |
378cc40b LW |
6562 | if (shift != 4) |
6563 | goto out; | |
55497cff | 6564 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6565 | |
6566 | /* Prepare to put the digit we have onto the end | |
6567 | of the number so far. We check for overflows. | |
6568 | */ | |
6569 | ||
55497cff | 6570 | digit: |
9e24b6e2 JH |
6571 | if (!overflowed) { |
6572 | x = u << shift; /* make room for the digit */ | |
6573 | ||
6574 | if ((x >> shift) != u | |
6575 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6576 | dTHR; | |
6577 | overflowed = TRUE; | |
6578 | n = (NV) u; | |
6579 | if (ckWARN_d(WARN_UNSAFE)) | |
6580 | Perl_warner(aTHX_ ((shift == 3) ? | |
6581 | WARN_OCTAL : WARN_UNSAFE), | |
6582 | "Integer overflow in %s number", | |
6583 | base); | |
6584 | } else | |
6585 | u = x | b; /* add the digit to the end */ | |
6586 | } | |
6587 | if (overflowed) { | |
6588 | n *= nvshift[shift]; | |
6589 | /* If an NV has not enough bits in its | |
6590 | * mantissa to represent an UV this summing of | |
6591 | * small low-order numbers is a waste of time | |
6592 | * (because the NV cannot preserve the | |
6593 | * low-order bits anyway): we could just | |
6594 | * remember when did we overflow and in the | |
6595 | * end just multiply n by the right | |
6596 | * amount. */ | |
6597 | n += (NV) b; | |
55497cff | 6598 | } |
378cc40b LW |
6599 | break; |
6600 | } | |
6601 | } | |
02aa26ce NT |
6602 | |
6603 | /* if we get here, we had success: make a scalar value from | |
6604 | the number. | |
6605 | */ | |
378cc40b | 6606 | out: |
79072805 | 6607 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6608 | if (overflowed) { |
6609 | dTHR; | |
893fe2c2 | 6610 | if (ckWARN(WARN_UNSAFE) && n > 4294967295.0) |
9e24b6e2 JH |
6611 | Perl_warner(aTHX_ WARN_UNSAFE, |
6612 | "%s number > %s non-portable", | |
6613 | Base, max); | |
6614 | sv_setnv(sv, n); | |
6615 | } | |
6616 | else { | |
2cc4c2dc | 6617 | #if UV_SIZEOF > 4 |
9e24b6e2 | 6618 | dTHR; |
2cc4c2dc | 6619 | if (ckWARN(WARN_UNSAFE) && u > 0xffffffff) |
9e24b6e2 JH |
6620 | Perl_warner(aTHX_ WARN_UNSAFE, |
6621 | "%s number > %s non-portable", | |
6622 | Base, max); | |
2cc4c2dc | 6623 | #endif |
9e24b6e2 JH |
6624 | sv_setuv(sv, u); |
6625 | } | |
2cc4c2dc | 6626 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6627 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6628 | } |
6629 | break; | |
02aa26ce NT |
6630 | |
6631 | /* | |
6632 | handle decimal numbers. | |
6633 | we're also sent here when we read a 0 as the first digit | |
6634 | */ | |
378cc40b LW |
6635 | case '1': case '2': case '3': case '4': case '5': |
6636 | case '6': case '7': case '8': case '9': case '.': | |
6637 | decimal: | |
3280af22 NIS |
6638 | d = PL_tokenbuf; |
6639 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6640 | floatit = FALSE; |
02aa26ce NT |
6641 | |
6642 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6643 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6644 | /* skip underscores, checking for misplaced ones |
6645 | if -w is on | |
6646 | */ | |
93a17b20 | 6647 | if (*s == '_') { |
d008e5eb | 6648 | dTHR; /* only for ckWARN */ |
599cee73 | 6649 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6650 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6651 | lastub = ++s; |
6652 | } | |
fc36a67e | 6653 | else { |
02aa26ce | 6654 | /* check for end of fixed-length buffer */ |
fc36a67e | 6655 | if (d >= e) |
cea2e8a9 | 6656 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6657 | /* if we're ok, copy the character */ |
378cc40b | 6658 | *d++ = *s++; |
fc36a67e | 6659 | } |
378cc40b | 6660 | } |
02aa26ce NT |
6661 | |
6662 | /* final misplaced underbar check */ | |
d008e5eb GS |
6663 | if (lastub && s - lastub != 3) { |
6664 | dTHR; | |
6665 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6666 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6667 | } |
02aa26ce NT |
6668 | |
6669 | /* read a decimal portion if there is one. avoid | |
6670 | 3..5 being interpreted as the number 3. followed | |
6671 | by .5 | |
6672 | */ | |
2f3197b3 | 6673 | if (*s == '.' && s[1] != '.') { |
79072805 | 6674 | floatit = TRUE; |
378cc40b | 6675 | *d++ = *s++; |
02aa26ce NT |
6676 | |
6677 | /* copy, ignoring underbars, until we run out of | |
6678 | digits. Note: no misplaced underbar checks! | |
6679 | */ | |
fc36a67e | 6680 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6681 | /* fixed length buffer check */ |
fc36a67e | 6682 | if (d >= e) |
cea2e8a9 | 6683 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6684 | if (*s != '_') |
6685 | *d++ = *s; | |
378cc40b LW |
6686 | } |
6687 | } | |
02aa26ce NT |
6688 | |
6689 | /* read exponent part, if present */ | |
93a17b20 | 6690 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6691 | floatit = TRUE; |
6692 | s++; | |
02aa26ce NT |
6693 | |
6694 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6695 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6696 | |
6697 | /* allow positive or negative exponent */ | |
378cc40b LW |
6698 | if (*s == '+' || *s == '-') |
6699 | *d++ = *s++; | |
02aa26ce NT |
6700 | |
6701 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6702 | while (isDIGIT(*s)) { |
6703 | if (d >= e) | |
cea2e8a9 | 6704 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6705 | *d++ = *s++; |
fc36a67e | 6706 | } |
378cc40b | 6707 | } |
02aa26ce NT |
6708 | |
6709 | /* terminate the string */ | |
378cc40b | 6710 | *d = '\0'; |
02aa26ce NT |
6711 | |
6712 | /* make an sv from the string */ | |
79072805 | 6713 | sv = NEWSV(92,0); |
097ee67d JH |
6714 | |
6715 | value = Atof(PL_tokenbuf); | |
02aa26ce NT |
6716 | |
6717 | /* | |
6718 | See if we can make do with an integer value without loss of | |
6719 | precision. We use I_V to cast to an int, because some | |
6720 | compilers have issues. Then we try casting it back and see | |
6721 | if it was the same. We only do this if we know we | |
6722 | specifically read an integer. | |
6723 | ||
6724 | Note: if floatit is true, then we don't need to do the | |
6725 | conversion at all. | |
6726 | */ | |
1e422769 | 6727 | tryiv = I_V(value); |
65202027 | 6728 | if (!floatit && (NV)tryiv == value) |
1e422769 | 6729 | sv_setiv(sv, tryiv); |
2f3197b3 | 6730 | else |
1e422769 | 6731 | sv_setnv(sv, value); |
b8403495 JH |
6732 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
6733 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 6734 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
6735 | (floatit ? "float" : "integer"), |
6736 | sv, Nullsv, NULL); | |
378cc40b | 6737 | break; |
79072805 | 6738 | } |
a687059c | 6739 | |
02aa26ce NT |
6740 | /* make the op for the constant and return */ |
6741 | ||
79072805 | 6742 | yylval.opval = newSVOP(OP_CONST, 0, sv); |
a687059c | 6743 | |
378cc40b LW |
6744 | return s; |
6745 | } | |
6746 | ||
76e3520e | 6747 | STATIC char * |
cea2e8a9 | 6748 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 6749 | { |
11343788 | 6750 | dTHR; |
79072805 | 6751 | register char *eol; |
378cc40b | 6752 | register char *t; |
79cb57f6 | 6753 | SV *stuff = newSVpvn("",0); |
79072805 | 6754 | bool needargs = FALSE; |
378cc40b | 6755 | |
79072805 | 6756 | while (!needargs) { |
85e6fe83 | 6757 | if (*s == '.' || *s == '}') { |
79072805 | 6758 | /*SUPPRESS 530*/ |
51882d45 GS |
6759 | #ifdef PERL_STRICT_CR |
6760 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6761 | #else | |
6762 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6763 | #endif | |
6a65c6a0 | 6764 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
6765 | break; |
6766 | } | |
3280af22 | 6767 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6768 | eol = strchr(s,'\n'); |
0f85fab0 | 6769 | if (!eol++) |
3280af22 | 6770 | eol = PL_bufend; |
0f85fab0 LW |
6771 | } |
6772 | else | |
3280af22 | 6773 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6774 | if (*s != '#') { |
a0d0e21e LW |
6775 | for (t = s; t < eol; t++) { |
6776 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6777 | needargs = FALSE; | |
6778 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6779 | } |
a0d0e21e LW |
6780 | if (*t == '@' || *t == '^') |
6781 | needargs = TRUE; | |
378cc40b | 6782 | } |
a0d0e21e | 6783 | sv_catpvn(stuff, s, eol-s); |
79072805 LW |
6784 | } |
6785 | s = eol; | |
3280af22 NIS |
6786 | if (PL_rsfp) { |
6787 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
6788 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
6789 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 6790 | if (!s) { |
3280af22 | 6791 | s = PL_bufptr; |
79072805 | 6792 | yyerror("Format not terminated"); |
378cc40b LW |
6793 | break; |
6794 | } | |
378cc40b | 6795 | } |
463ee0b2 | 6796 | incline(s); |
79072805 | 6797 | } |
a0d0e21e LW |
6798 | enough: |
6799 | if (SvCUR(stuff)) { | |
3280af22 | 6800 | PL_expect = XTERM; |
79072805 | 6801 | if (needargs) { |
3280af22 NIS |
6802 | PL_lex_state = LEX_NORMAL; |
6803 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
6804 | force_next(','); |
6805 | } | |
a0d0e21e | 6806 | else |
3280af22 NIS |
6807 | PL_lex_state = LEX_FORMLINE; |
6808 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 6809 | force_next(THING); |
3280af22 | 6810 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 6811 | force_next(LSTOP); |
378cc40b | 6812 | } |
79072805 | 6813 | else { |
8990e307 | 6814 | SvREFCNT_dec(stuff); |
3280af22 NIS |
6815 | PL_lex_formbrack = 0; |
6816 | PL_bufptr = s; | |
79072805 LW |
6817 | } |
6818 | return s; | |
378cc40b | 6819 | } |
a687059c | 6820 | |
76e3520e | 6821 | STATIC void |
cea2e8a9 | 6822 | S_set_csh(pTHX) |
a687059c | 6823 | { |
ae986130 | 6824 | #ifdef CSH |
3280af22 NIS |
6825 | if (!PL_cshlen) |
6826 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 6827 | #endif |
a687059c | 6828 | } |
463ee0b2 | 6829 | |
ba6d6ac9 | 6830 | I32 |
864dbfa3 | 6831 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 6832 | { |
11343788 | 6833 | dTHR; |
3280af22 NIS |
6834 | I32 oldsavestack_ix = PL_savestack_ix; |
6835 | CV* outsidecv = PL_compcv; | |
748a9306 | 6836 | AV* comppadlist; |
8990e307 | 6837 | |
3280af22 NIS |
6838 | if (PL_compcv) { |
6839 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 6840 | } |
3280af22 NIS |
6841 | save_I32(&PL_subline); |
6842 | save_item(PL_subname); | |
6843 | SAVEI32(PL_padix); | |
6844 | SAVESPTR(PL_curpad); | |
6845 | SAVESPTR(PL_comppad); | |
6846 | SAVESPTR(PL_comppad_name); | |
6847 | SAVESPTR(PL_compcv); | |
6848 | SAVEI32(PL_comppad_name_fill); | |
6849 | SAVEI32(PL_min_intro_pending); | |
6850 | SAVEI32(PL_max_intro_pending); | |
6851 | SAVEI32(PL_pad_reset_pending); | |
6852 | ||
6853 | PL_compcv = (CV*)NEWSV(1104,0); | |
6854 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
6855 | CvFLAGS(PL_compcv) |= flags; | |
6856 | ||
6857 | PL_comppad = newAV(); | |
6858 | av_push(PL_comppad, Nullsv); | |
6859 | PL_curpad = AvARRAY(PL_comppad); | |
6860 | PL_comppad_name = newAV(); | |
6861 | PL_comppad_name_fill = 0; | |
6862 | PL_min_intro_pending = 0; | |
6863 | PL_padix = 0; | |
6864 | PL_subline = PL_curcop->cop_line; | |
6d4ff0d2 | 6865 | #ifdef USE_THREADS |
79cb57f6 | 6866 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
6867 | PL_curpad[0] = (SV*)newAV(); |
6868 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 6869 | #endif /* USE_THREADS */ |
748a9306 LW |
6870 | |
6871 | comppadlist = newAV(); | |
6872 | AvREAL_off(comppadlist); | |
3280af22 NIS |
6873 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
6874 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 6875 | |
3280af22 NIS |
6876 | CvPADLIST(PL_compcv) = comppadlist; |
6877 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 6878 | #ifdef USE_THREADS |
533c011a NIS |
6879 | CvOWNER(PL_compcv) = 0; |
6880 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
6881 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 6882 | #endif /* USE_THREADS */ |
748a9306 | 6883 | |
8990e307 LW |
6884 | return oldsavestack_ix; |
6885 | } | |
6886 | ||
6887 | int | |
864dbfa3 | 6888 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 6889 | { |
11343788 | 6890 | dTHR; |
3280af22 | 6891 | --PL_error_count; |
faef0170 | 6892 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 6893 | yyerror(s); |
faef0170 | 6894 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 6895 | return 0; |
8990e307 LW |
6896 | } |
6897 | ||
6898 | int | |
864dbfa3 | 6899 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 6900 | { |
11343788 | 6901 | dTHR; |
68dc0745 | 6902 | char *where = NULL; |
6903 | char *context = NULL; | |
6904 | int contlen = -1; | |
46fc3d4c | 6905 | SV *msg; |
463ee0b2 | 6906 | |
3280af22 | 6907 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 6908 | where = "at EOF"; |
3280af22 NIS |
6909 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
6910 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
6911 | while (isSPACE(*PL_oldoldbufptr)) | |
6912 | PL_oldoldbufptr++; | |
6913 | context = PL_oldoldbufptr; | |
6914 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 6915 | } |
3280af22 NIS |
6916 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
6917 | PL_oldbufptr != PL_bufptr) { | |
6918 | while (isSPACE(*PL_oldbufptr)) | |
6919 | PL_oldbufptr++; | |
6920 | context = PL_oldbufptr; | |
6921 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
6922 | } |
6923 | else if (yychar > 255) | |
68dc0745 | 6924 | where = "next token ???"; |
463ee0b2 | 6925 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
6926 | if (PL_lex_state == LEX_NORMAL || |
6927 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 6928 | where = "at end of line"; |
3280af22 | 6929 | else if (PL_lex_inpat) |
68dc0745 | 6930 | where = "within pattern"; |
463ee0b2 | 6931 | else |
68dc0745 | 6932 | where = "within string"; |
463ee0b2 | 6933 | } |
46fc3d4c | 6934 | else { |
79cb57f6 | 6935 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 6936 | if (yychar < 32) |
cea2e8a9 | 6937 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 6938 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 6939 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 6940 | else |
cea2e8a9 | 6941 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 6942 | where = SvPVX(where_sv); |
463ee0b2 | 6943 | } |
46fc3d4c | 6944 | msg = sv_2mortal(newSVpv(s, 0)); |
cf2093f6 JH |
6945 | #ifdef IV_IS_QUAD |
6946 | Perl_sv_catpvf(aTHX_ msg, " at %_ line %" PERL_PRId64 ", ", | |
6947 | GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line); | |
6948 | #else | |
cea2e8a9 | 6949 | Perl_sv_catpvf(aTHX_ msg, " at %_ line %ld, ", |
cf2093f6 JH |
6950 | GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line); |
6951 | #endif | |
68dc0745 | 6952 | if (context) |
cea2e8a9 | 6953 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 6954 | else |
cea2e8a9 | 6955 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
3280af22 | 6956 | if (PL_multi_start < PL_multi_end && (U32)(PL_curcop->cop_line - PL_multi_end) <= 1) { |
cf2093f6 JH |
6957 | #ifdef IV_IS_QUAD |
6958 | Perl_sv_catpvf(aTHX_ msg, | |
6959 | " (Might be a runaway multi-line %c%c string starting on line %" PERL_\ | |
6960 | PRId64 ")\n", | |
6961 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); | |
6962 | #else | |
6963 | Perl_sv_catpvf(aTHX_ msg, | |
6964 | " (Might be a runaway multi-line %c%c string starting on line %ld)\n", | |
6965 | (int)PL_multi_open,(int)PL_multi_close,(long)PL_multi_start); | |
6966 | #endif | |
3280af22 | 6967 | PL_multi_end = 0; |
a0d0e21e | 6968 | } |
faef0170 | 6969 | if (PL_in_eval & EVAL_WARNONLY) |
cea2e8a9 | 6970 | Perl_warn(aTHX_ "%_", msg); |
3280af22 | 6971 | else if (PL_in_eval) |
38a03e6e | 6972 | sv_catsv(ERRSV, msg); |
463ee0b2 | 6973 | else |
46fc3d4c | 6974 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); |
3280af22 | 6975 | if (++PL_error_count >= 10) |
cea2e8a9 | 6976 | Perl_croak(aTHX_ "%_ has too many errors.\n", GvSV(PL_curcop->cop_filegv)); |
3280af22 NIS |
6977 | PL_in_my = 0; |
6978 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
6979 | return 0; |
6980 | } | |
4e35701f | 6981 | |
161b471a | 6982 | |
51371543 GS |
6983 | #ifdef PERL_OBJECT |
6984 | #define NO_XSLOCKS | |
6985 | #include "XSUB.h" | |
6986 | #endif | |
6987 | ||
ffb4593c NT |
6988 | /* |
6989 | * restore_rsfp | |
6990 | * Restore a source filter. | |
6991 | */ | |
6992 | ||
51371543 GS |
6993 | static void |
6994 | restore_rsfp(pTHXo_ void *f) | |
6995 | { | |
6996 | PerlIO *fp = (PerlIO*)f; | |
6997 | ||
6998 | if (PL_rsfp == PerlIO_stdin()) | |
6999 | PerlIO_clearerr(PL_rsfp); | |
7000 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7001 | PerlIO_close(PL_rsfp); | |
7002 | PL_rsfp = fp; | |
7003 | } | |
7004 | ||
ffb4593c NT |
7005 | /* |
7006 | * restore_expect | |
7007 | * Restores the state of PL_expect when the lexing that begun with a | |
7008 | * start_lex() call has ended. | |
7009 | */ | |
7010 | ||
51371543 GS |
7011 | static void |
7012 | restore_expect(pTHXo_ void *e) | |
7013 | { | |
7014 | /* a safe way to store a small integer in a pointer */ | |
7015 | PL_expect = (expectation)((char *)e - PL_tokenbuf); | |
7016 | } | |
7017 | ||
ffb4593c NT |
7018 | /* |
7019 | * restore_lex_expect | |
7020 | * Restores the state of PL_lex_expect when the lexing that begun with a | |
7021 | * start_lex() call has ended. | |
7022 | */ | |
7023 | ||
51371543 GS |
7024 | static void |
7025 | restore_lex_expect(pTHXo_ void *e) | |
7026 | { | |
7027 | /* a safe way to store a small integer in a pointer */ | |
7028 | PL_lex_expect = (expectation)((char *)e - PL_tokenbuf); | |
7029 | } |