Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
3818b22b | 3 | * Copyright (c) 1991-2000, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
9cbb5ea2 GS |
14 | /* |
15 | * This file is the lexer for Perl. It's closely linked to the | |
ffb4593c NT |
16 | * parser, perly.y. |
17 | * | |
18 | * The main routine is yylex(), which returns the next token. | |
19 | */ | |
20 | ||
378cc40b | 21 | #include "EXTERN.h" |
864dbfa3 | 22 | #define PERL_IN_TOKE_C |
378cc40b | 23 | #include "perl.h" |
378cc40b | 24 | |
d3b6f988 GS |
25 | #define yychar PL_yychar |
26 | #define yylval PL_yylval | |
27 | ||
fc36a67e | 28 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 29 | |
51371543 | 30 | static void restore_rsfp(pTHXo_ void *f); |
51371543 | 31 | |
9059aa12 LW |
32 | #define XFAKEBRACK 128 |
33 | #define XENUMMASK 127 | |
34 | ||
7e2040f0 | 35 | /*#define UTF (SvUTF8(PL_linestr) && !(PL_hints & HINT_BYTE))*/ |
a0ed51b3 LW |
36 | #define UTF (PL_hints & HINT_UTF8) |
37 | ||
2b92dfce GS |
38 | /* In variables name $^X, these are the legal values for X. |
39 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
40 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
41 | ||
ffb4593c NT |
42 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
43 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
44 | * can get by with a single comparison (if the compiler is smart enough). |
45 | */ | |
46 | ||
fb73857a | 47 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
48 | ||
55497cff | 49 | #define LEX_NORMAL 10 |
50 | #define LEX_INTERPNORMAL 9 | |
51 | #define LEX_INTERPCASEMOD 8 | |
52 | #define LEX_INTERPPUSH 7 | |
53 | #define LEX_INTERPSTART 6 | |
54 | #define LEX_INTERPEND 5 | |
55 | #define LEX_INTERPENDMAYBE 4 | |
56 | #define LEX_INTERPCONCAT 3 | |
57 | #define LEX_INTERPCONST 2 | |
58 | #define LEX_FORMLINE 1 | |
59 | #define LEX_KNOWNEXT 0 | |
79072805 | 60 | |
a790bc05 | 61 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
62 | #ifdef I_UNISTD | |
63 | # include <unistd.h> /* Needed for execv() */ | |
64 | #endif | |
65 | ||
66 | ||
79072805 LW |
67 | #ifdef ff_next |
68 | #undef ff_next | |
d48672a2 LW |
69 | #endif |
70 | ||
a1a0e61e TD |
71 | #ifdef USE_PURE_BISON |
72 | YYSTYPE* yylval_pointer = NULL; | |
73 | int* yychar_pointer = NULL; | |
22c35a8c GS |
74 | # undef yylval |
75 | # undef yychar | |
e4bfbdd4 JH |
76 | # define yylval (*yylval_pointer) |
77 | # define yychar (*yychar_pointer) | |
78 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
79 | # undef yylex |
80 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
81 | #endif |
82 | ||
79072805 | 83 | #include "keywords.h" |
fe14fcc3 | 84 | |
ffb4593c NT |
85 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
86 | ||
ae986130 LW |
87 | #ifdef CLINE |
88 | #undef CLINE | |
89 | #endif | |
57843af0 | 90 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 91 | |
ffb4593c NT |
92 | /* |
93 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 94 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
95 | * |
96 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
97 | * OPERATOR : generic operator | |
98 | * AOPERATOR : assignment operator | |
99 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
100 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
101 | * PREREF : *EXPR where EXPR is not a simple identifier | |
102 | * TERM : expression term | |
103 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
104 | * FTST : file test operator | |
105 | * FUN0 : zero-argument function | |
2d2e263d | 106 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
107 | * BOop : bitwise or or xor |
108 | * BAop : bitwise and | |
109 | * SHop : shift operator | |
110 | * PWop : power operator | |
9cbb5ea2 | 111 | * PMop : pattern-matching operator |
ffb4593c NT |
112 | * Aop : addition-level operator |
113 | * Mop : multiplication-level operator | |
114 | * Eop : equality-testing operator | |
115 | * Rop : relational operator <= != gt | |
116 | * | |
117 | * Also see LOP and lop() below. | |
118 | */ | |
119 | ||
3280af22 NIS |
120 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
121 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
122 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
123 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
124 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
125 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
126 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
127 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
128 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
129 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
130 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
131 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
132 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
133 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
134 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
135 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
136 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
137 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
138 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
139 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 140 | |
a687059c LW |
141 | /* This bit of chicanery makes a unary function followed by |
142 | * a parenthesis into a function with one argument, highest precedence. | |
143 | */ | |
2f3197b3 | 144 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
145 | PL_expect = XTERM, \ |
146 | PL_bufptr = s, \ | |
147 | PL_last_uni = PL_oldbufptr, \ | |
148 | PL_last_lop_op = f, \ | |
a687059c LW |
149 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
150 | ||
79072805 | 151 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
152 | PL_bufptr = s, \ |
153 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
154 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
155 | ||
9f68db38 | 156 | /* grandfather return to old style */ |
3280af22 | 157 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 158 | |
ffb4593c NT |
159 | /* |
160 | * S_ao | |
161 | * | |
162 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
163 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
164 | */ | |
165 | ||
76e3520e | 166 | STATIC int |
cea2e8a9 | 167 | S_ao(pTHX_ int toketype) |
a0d0e21e | 168 | { |
3280af22 NIS |
169 | if (*PL_bufptr == '=') { |
170 | PL_bufptr++; | |
a0d0e21e LW |
171 | if (toketype == ANDAND) |
172 | yylval.ival = OP_ANDASSIGN; | |
173 | else if (toketype == OROR) | |
174 | yylval.ival = OP_ORASSIGN; | |
175 | toketype = ASSIGNOP; | |
176 | } | |
177 | return toketype; | |
178 | } | |
179 | ||
ffb4593c NT |
180 | /* |
181 | * S_no_op | |
182 | * When Perl expects an operator and finds something else, no_op | |
183 | * prints the warning. It always prints "<something> found where | |
184 | * operator expected. It prints "Missing semicolon on previous line?" | |
185 | * if the surprise occurs at the start of the line. "do you need to | |
186 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
187 | * where the compiler doesn't know if foo is a method call or a function. | |
188 | * It prints "Missing operator before end of line" if there's nothing | |
189 | * after the missing operator, or "... before <...>" if there is something | |
190 | * after the missing operator. | |
191 | */ | |
192 | ||
76e3520e | 193 | STATIC void |
cea2e8a9 | 194 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 195 | { |
3280af22 NIS |
196 | char *oldbp = PL_bufptr; |
197 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 198 | |
1189a94a GS |
199 | if (!s) |
200 | s = oldbp; | |
201 | else { | |
202 | assert(s >= oldbp); | |
203 | PL_bufptr = s; | |
204 | } | |
cea2e8a9 | 205 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 206 | if (is_first) |
cea2e8a9 | 207 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 208 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 209 | char *t; |
7e2040f0 | 210 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 211 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 212 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 213 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
214 | } |
215 | else | |
cea2e8a9 | 216 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 217 | PL_bufptr = oldbp; |
8990e307 LW |
218 | } |
219 | ||
ffb4593c NT |
220 | /* |
221 | * S_missingterm | |
222 | * Complain about missing quote/regexp/heredoc terminator. | |
223 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
224 | * If we're in a delimited string and the delimiter is a control | |
225 | * character, it's reformatted into a two-char sequence like ^C. | |
226 | * This is fatal. | |
227 | */ | |
228 | ||
76e3520e | 229 | STATIC void |
cea2e8a9 | 230 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
231 | { |
232 | char tmpbuf[3]; | |
233 | char q; | |
234 | if (s) { | |
235 | char *nl = strrchr(s,'\n'); | |
d2719217 | 236 | if (nl) |
8990e307 LW |
237 | *nl = '\0'; |
238 | } | |
9d116dd7 JH |
239 | else if ( |
240 | #ifdef EBCDIC | |
241 | iscntrl(PL_multi_close) | |
242 | #else | |
243 | PL_multi_close < 32 || PL_multi_close == 127 | |
244 | #endif | |
245 | ) { | |
8990e307 | 246 | *tmpbuf = '^'; |
3280af22 | 247 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
248 | s = "\\n"; |
249 | tmpbuf[2] = '\0'; | |
250 | s = tmpbuf; | |
251 | } | |
252 | else { | |
3280af22 | 253 | *tmpbuf = PL_multi_close; |
8990e307 LW |
254 | tmpbuf[1] = '\0'; |
255 | s = tmpbuf; | |
256 | } | |
257 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 258 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 259 | } |
79072805 | 260 | |
ffb4593c NT |
261 | /* |
262 | * Perl_deprecate | |
ffb4593c NT |
263 | */ |
264 | ||
79072805 | 265 | void |
864dbfa3 | 266 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 267 | { |
d008e5eb | 268 | dTHR; |
599cee73 | 269 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 270 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
271 | } |
272 | ||
ffb4593c NT |
273 | /* |
274 | * depcom | |
9cbb5ea2 | 275 | * Deprecate a comma-less variable list. |
ffb4593c NT |
276 | */ |
277 | ||
76e3520e | 278 | STATIC void |
cea2e8a9 | 279 | S_depcom(pTHX) |
a0d0e21e LW |
280 | { |
281 | deprecate("comma-less variable list"); | |
282 | } | |
283 | ||
ffb4593c | 284 | /* |
9cbb5ea2 GS |
285 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
286 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
287 | */ |
288 | ||
c39cd008 GS |
289 | #ifdef PERL_CR_FILTER |
290 | static void | |
291 | strip_return(SV *sv) | |
292 | { | |
293 | register char *s = SvPVX(sv); | |
294 | register char *e = s + SvCUR(sv); | |
295 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
296 | while (s < e) { | |
297 | if (*s++ == '\r' && *s == '\n') { | |
298 | /* hit a CR-LF, need to copy the rest */ | |
299 | register char *d = s - 1; | |
300 | *d++ = *s++; | |
301 | while (s < e) { | |
302 | if (*s == '\r' && s[1] == '\n') | |
303 | s++; | |
304 | *d++ = *s++; | |
305 | } | |
306 | SvCUR(sv) -= s - d; | |
307 | return; | |
308 | } | |
309 | } | |
310 | } | |
a868473f | 311 | |
76e3520e | 312 | STATIC I32 |
c39cd008 | 313 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 314 | { |
c39cd008 GS |
315 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
316 | if (count > 0 && !maxlen) | |
317 | strip_return(sv); | |
318 | return count; | |
a868473f NIS |
319 | } |
320 | #endif | |
321 | ||
a0ed51b3 | 322 | STATIC I32 |
cea2e8a9 | 323 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
324 | { |
325 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
326 | if (count) { | |
dfe13c55 GS |
327 | U8* tmps; |
328 | U8* tend; | |
329 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 330 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 331 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
332 | |
333 | } | |
334 | return count; | |
335 | } | |
336 | ||
337 | STATIC I32 | |
cea2e8a9 | 338 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
339 | { |
340 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
341 | if (count) { | |
dfe13c55 GS |
342 | U8* tmps; |
343 | U8* tend; | |
344 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 345 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 346 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
347 | |
348 | } | |
349 | return count; | |
350 | } | |
a868473f | 351 | |
ffb4593c NT |
352 | /* |
353 | * Perl_lex_start | |
9cbb5ea2 GS |
354 | * Initialize variables. Uses the Perl save_stack to save its state (for |
355 | * recursive calls to the parser). | |
ffb4593c NT |
356 | */ |
357 | ||
a0d0e21e | 358 | void |
864dbfa3 | 359 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 360 | { |
0f15f207 | 361 | dTHR; |
8990e307 LW |
362 | char *s; |
363 | STRLEN len; | |
364 | ||
3280af22 NIS |
365 | SAVEI32(PL_lex_dojoin); |
366 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
367 | SAVEI32(PL_lex_casemods); |
368 | SAVEI32(PL_lex_starts); | |
369 | SAVEI32(PL_lex_state); | |
7766f137 | 370 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 371 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
372 | if (PL_lex_state == LEX_KNOWNEXT) { |
373 | I32 toke = PL_nexttoke; | |
374 | while (--toke >= 0) { | |
375 | SAVEI32(PL_nexttype[toke]); | |
376 | SAVEVPTR(PL_nextval[toke]); | |
377 | } | |
378 | SAVEI32(PL_nexttoke); | |
379 | PL_nexttoke = 0; | |
380 | } | |
57843af0 | 381 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
382 | SAVEPPTR(PL_bufptr); |
383 | SAVEPPTR(PL_bufend); | |
384 | SAVEPPTR(PL_oldbufptr); | |
385 | SAVEPPTR(PL_oldoldbufptr); | |
386 | SAVEPPTR(PL_linestart); | |
387 | SAVESPTR(PL_linestr); | |
388 | SAVEPPTR(PL_lex_brackstack); | |
389 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 390 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
391 | SAVESPTR(PL_lex_stuff); |
392 | SAVEI32(PL_lex_defer); | |
09bef843 | 393 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 394 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
395 | SAVEINT(PL_expect); |
396 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
397 | |
398 | PL_lex_state = LEX_NORMAL; | |
399 | PL_lex_defer = 0; | |
400 | PL_expect = XSTATE; | |
401 | PL_lex_brackets = 0; | |
3280af22 NIS |
402 | New(899, PL_lex_brackstack, 120, char); |
403 | New(899, PL_lex_casestack, 12, char); | |
404 | SAVEFREEPV(PL_lex_brackstack); | |
405 | SAVEFREEPV(PL_lex_casestack); | |
406 | PL_lex_casemods = 0; | |
407 | *PL_lex_casestack = '\0'; | |
408 | PL_lex_dojoin = 0; | |
409 | PL_lex_starts = 0; | |
410 | PL_lex_stuff = Nullsv; | |
411 | PL_lex_repl = Nullsv; | |
412 | PL_lex_inpat = 0; | |
413 | PL_lex_inwhat = 0; | |
09bef843 | 414 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
415 | PL_linestr = line; |
416 | if (SvREADONLY(PL_linestr)) | |
417 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
418 | s = SvPV(PL_linestr, len); | |
8990e307 | 419 | if (len && s[len-1] != ';') { |
3280af22 NIS |
420 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
421 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
422 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 423 | } |
3280af22 NIS |
424 | SvTEMP_off(PL_linestr); |
425 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
426 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
427 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 428 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 429 | PL_rsfp = 0; |
79072805 | 430 | } |
a687059c | 431 | |
ffb4593c NT |
432 | /* |
433 | * Perl_lex_end | |
9cbb5ea2 GS |
434 | * Finalizer for lexing operations. Must be called when the parser is |
435 | * done with the lexer. | |
ffb4593c NT |
436 | */ |
437 | ||
463ee0b2 | 438 | void |
864dbfa3 | 439 | Perl_lex_end(pTHX) |
463ee0b2 | 440 | { |
3280af22 | 441 | PL_doextract = FALSE; |
463ee0b2 LW |
442 | } |
443 | ||
ffb4593c NT |
444 | /* |
445 | * S_incline | |
446 | * This subroutine has nothing to do with tilting, whether at windmills | |
447 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 448 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 449 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
450 | * # line 500 "foo.pm" |
451 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
452 | */ |
453 | ||
76e3520e | 454 | STATIC void |
cea2e8a9 | 455 | S_incline(pTHX_ char *s) |
463ee0b2 | 456 | { |
0f15f207 | 457 | dTHR; |
463ee0b2 LW |
458 | char *t; |
459 | char *n; | |
73659bf1 | 460 | char *e; |
463ee0b2 | 461 | char ch; |
463ee0b2 | 462 | |
57843af0 | 463 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
464 | if (*s++ != '#') |
465 | return; | |
466 | while (*s == ' ' || *s == '\t') s++; | |
73659bf1 GS |
467 | if (strnEQ(s, "line", 4)) |
468 | s += 4; | |
469 | else | |
470 | return; | |
471 | if (*s == ' ' || *s == '\t') | |
472 | s++; | |
473 | else | |
474 | return; | |
475 | while (*s == ' ' || *s == '\t') s++; | |
463ee0b2 LW |
476 | if (!isDIGIT(*s)) |
477 | return; | |
478 | n = s; | |
479 | while (isDIGIT(*s)) | |
480 | s++; | |
481 | while (*s == ' ' || *s == '\t') | |
482 | s++; | |
73659bf1 | 483 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 484 | s++; |
73659bf1 GS |
485 | e = t + 1; |
486 | } | |
463ee0b2 | 487 | else { |
463ee0b2 | 488 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 489 | e = t; |
463ee0b2 | 490 | } |
73659bf1 GS |
491 | while (*e == ' ' || *e == '\t' || *e == '\r' || *e == '\f') |
492 | e++; | |
493 | if (*e != '\n' && *e != '\0') | |
494 | return; /* false alarm */ | |
495 | ||
463ee0b2 LW |
496 | ch = *t; |
497 | *t = '\0'; | |
498 | if (t - s > 0) | |
57843af0 | 499 | CopFILE_set(PL_curcop, s); |
463ee0b2 | 500 | *t = ch; |
57843af0 | 501 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
502 | } |
503 | ||
ffb4593c NT |
504 | /* |
505 | * S_skipspace | |
506 | * Called to gobble the appropriate amount and type of whitespace. | |
507 | * Skips comments as well. | |
508 | */ | |
509 | ||
76e3520e | 510 | STATIC char * |
cea2e8a9 | 511 | S_skipspace(pTHX_ register char *s) |
a687059c | 512 | { |
11343788 | 513 | dTHR; |
3280af22 NIS |
514 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
515 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
516 | s++; |
517 | return s; | |
518 | } | |
519 | for (;;) { | |
fd049845 | 520 | STRLEN prevlen; |
09bef843 SB |
521 | SSize_t oldprevlen, oldoldprevlen; |
522 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
523 | while (s < PL_bufend && isSPACE(*s)) { |
524 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
525 | incline(s); | |
526 | } | |
ffb4593c NT |
527 | |
528 | /* comment */ | |
3280af22 NIS |
529 | if (s < PL_bufend && *s == '#') { |
530 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 531 | s++; |
60e6418e | 532 | if (s < PL_bufend) { |
463ee0b2 | 533 | s++; |
60e6418e GS |
534 | if (PL_in_eval && !PL_rsfp) { |
535 | incline(s); | |
536 | continue; | |
537 | } | |
538 | } | |
463ee0b2 | 539 | } |
ffb4593c NT |
540 | |
541 | /* only continue to recharge the buffer if we're at the end | |
542 | * of the buffer, we're not reading from a source filter, and | |
543 | * we're in normal lexing mode | |
544 | */ | |
09bef843 SB |
545 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
546 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 547 | return s; |
ffb4593c NT |
548 | |
549 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
550 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
551 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
552 | { | |
553 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
554 | if (PL_minus_n || PL_minus_p) { |
555 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
556 | ";}continue{print or die qq(-p destination: $!\\n)" : |
557 | ""); | |
3280af22 NIS |
558 | sv_catpv(PL_linestr,";}"); |
559 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
560 | } |
561 | else | |
3280af22 | 562 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
563 | |
564 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
565 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
566 | = SvPVX(PL_linestr); | |
3280af22 | 567 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
568 | |
569 | /* Close the filehandle. Could be from -P preprocessor, | |
570 | * STDIN, or a regular file. If we were reading code from | |
571 | * STDIN (because the commandline held no -e or filename) | |
572 | * then we don't close it, we reset it so the code can | |
573 | * read from STDIN too. | |
574 | */ | |
575 | ||
3280af22 NIS |
576 | if (PL_preprocess && !PL_in_eval) |
577 | (void)PerlProc_pclose(PL_rsfp); | |
578 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
579 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 580 | else |
3280af22 NIS |
581 | (void)PerlIO_close(PL_rsfp); |
582 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
583 | return s; |
584 | } | |
ffb4593c NT |
585 | |
586 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
587 | /* make corresponding updates to old pointers, for yyerror() */ |
588 | oldprevlen = PL_oldbufptr - PL_bufend; | |
589 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
590 | if (PL_last_uni) | |
591 | oldunilen = PL_last_uni - PL_bufend; | |
592 | if (PL_last_lop) | |
593 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
594 | PL_linestart = PL_bufptr = s + prevlen; |
595 | PL_bufend = s + SvCUR(PL_linestr); | |
596 | s = PL_bufptr; | |
09bef843 SB |
597 | PL_oldbufptr = s + oldprevlen; |
598 | PL_oldoldbufptr = s + oldoldprevlen; | |
599 | if (PL_last_uni) | |
600 | PL_last_uni = s + oldunilen; | |
601 | if (PL_last_lop) | |
602 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 603 | incline(s); |
ffb4593c NT |
604 | |
605 | /* debugger active and we're not compiling the debugger code, | |
606 | * so store the line into the debugger's array of lines | |
607 | */ | |
3280af22 | 608 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
609 | SV *sv = NEWSV(85,0); |
610 | ||
611 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 612 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
57843af0 | 613 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 614 | } |
463ee0b2 | 615 | } |
a687059c | 616 | } |
378cc40b | 617 | |
ffb4593c NT |
618 | /* |
619 | * S_check_uni | |
620 | * Check the unary operators to ensure there's no ambiguity in how they're | |
621 | * used. An ambiguous piece of code would be: | |
622 | * rand + 5 | |
623 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
624 | * the +5 is its argument. | |
625 | */ | |
626 | ||
76e3520e | 627 | STATIC void |
cea2e8a9 | 628 | S_check_uni(pTHX) |
ba106d47 | 629 | { |
2f3197b3 | 630 | char *s; |
a0d0e21e | 631 | char *t; |
0453d815 | 632 | dTHR; |
2f3197b3 | 633 | |
3280af22 | 634 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 635 | return; |
3280af22 NIS |
636 | while (isSPACE(*PL_last_uni)) |
637 | PL_last_uni++; | |
7e2040f0 | 638 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 639 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 640 | return; |
0453d815 | 641 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 642 | char ch = *s; |
0453d815 PM |
643 | *s = '\0'; |
644 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
645 | "Warning: Use of \"%s\" without parens is ambiguous", | |
646 | PL_last_uni); | |
647 | *s = ch; | |
648 | } | |
2f3197b3 LW |
649 | } |
650 | ||
ffb4593c NT |
651 | /* workaround to replace the UNI() macro with a function. Only the |
652 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
653 | * source indicate Microport Unix might need it too. | |
654 | */ | |
655 | ||
ffed7fef LW |
656 | #ifdef CRIPPLED_CC |
657 | ||
658 | #undef UNI | |
ffed7fef | 659 | #define UNI(f) return uni(f,s) |
ffed7fef | 660 | |
76e3520e | 661 | STATIC int |
cea2e8a9 | 662 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
663 | { |
664 | yylval.ival = f; | |
3280af22 NIS |
665 | PL_expect = XTERM; |
666 | PL_bufptr = s; | |
8f872242 NIS |
667 | PL_last_uni = PL_oldbufptr; |
668 | PL_last_lop_op = f; | |
ffed7fef LW |
669 | if (*s == '(') |
670 | return FUNC1; | |
671 | s = skipspace(s); | |
672 | if (*s == '(') | |
673 | return FUNC1; | |
674 | else | |
675 | return UNIOP; | |
676 | } | |
677 | ||
a0d0e21e LW |
678 | #endif /* CRIPPLED_CC */ |
679 | ||
ffb4593c NT |
680 | /* |
681 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
682 | * with a subroutine, S_lop() for which LOP is just another name. | |
683 | */ | |
684 | ||
a0d0e21e LW |
685 | #define LOP(f,x) return lop(f,x,s) |
686 | ||
ffb4593c NT |
687 | /* |
688 | * S_lop | |
689 | * Build a list operator (or something that might be one). The rules: | |
690 | * - if we have a next token, then it's a list operator [why?] | |
691 | * - if the next thing is an opening paren, then it's a function | |
692 | * - else it's a list operator | |
693 | */ | |
694 | ||
76e3520e | 695 | STATIC I32 |
a0be28da | 696 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 697 | { |
0f15f207 | 698 | dTHR; |
79072805 | 699 | yylval.ival = f; |
35c8bce7 | 700 | CLINE; |
3280af22 NIS |
701 | PL_expect = x; |
702 | PL_bufptr = s; | |
703 | PL_last_lop = PL_oldbufptr; | |
704 | PL_last_lop_op = f; | |
705 | if (PL_nexttoke) | |
a0d0e21e | 706 | return LSTOP; |
79072805 LW |
707 | if (*s == '(') |
708 | return FUNC; | |
709 | s = skipspace(s); | |
710 | if (*s == '(') | |
711 | return FUNC; | |
712 | else | |
713 | return LSTOP; | |
714 | } | |
715 | ||
ffb4593c NT |
716 | /* |
717 | * S_force_next | |
9cbb5ea2 | 718 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 719 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
720 | * to know what token to return the next time the lexer is called. Caller |
721 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
722 | * handles the token correctly. | |
ffb4593c NT |
723 | */ |
724 | ||
76e3520e | 725 | STATIC void |
cea2e8a9 | 726 | S_force_next(pTHX_ I32 type) |
79072805 | 727 | { |
3280af22 NIS |
728 | PL_nexttype[PL_nexttoke] = type; |
729 | PL_nexttoke++; | |
730 | if (PL_lex_state != LEX_KNOWNEXT) { | |
731 | PL_lex_defer = PL_lex_state; | |
732 | PL_lex_expect = PL_expect; | |
733 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
734 | } |
735 | } | |
736 | ||
ffb4593c NT |
737 | /* |
738 | * S_force_word | |
739 | * When the lexer knows the next thing is a word (for instance, it has | |
740 | * just seen -> and it knows that the next char is a word char, then | |
741 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
742 | * | |
743 | * Arguments: | |
b1b65b59 | 744 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
745 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
746 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
747 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
748 | * int allow_pack : if true, : characters will also be allowed (require, | |
749 | * use, etc. do this) | |
9cbb5ea2 | 750 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
751 | */ |
752 | ||
76e3520e | 753 | STATIC char * |
cea2e8a9 | 754 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 755 | { |
463ee0b2 LW |
756 | register char *s; |
757 | STRLEN len; | |
758 | ||
759 | start = skipspace(start); | |
760 | s = start; | |
7e2040f0 | 761 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 762 | (allow_pack && *s == ':') || |
15f0808c | 763 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 764 | { |
3280af22 NIS |
765 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
766 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
767 | return start; |
768 | if (token == METHOD) { | |
769 | s = skipspace(s); | |
770 | if (*s == '(') | |
3280af22 | 771 | PL_expect = XTERM; |
463ee0b2 | 772 | else { |
3280af22 | 773 | PL_expect = XOPERATOR; |
463ee0b2 | 774 | } |
79072805 | 775 | } |
3280af22 NIS |
776 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
777 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
778 | force_next(token); |
779 | } | |
780 | return s; | |
781 | } | |
782 | ||
ffb4593c NT |
783 | /* |
784 | * S_force_ident | |
9cbb5ea2 | 785 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
786 | * text only contains the "foo" portion. The first argument is a pointer |
787 | * to the "foo", and the second argument is the type symbol to prefix. | |
788 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 789 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
790 | */ |
791 | ||
76e3520e | 792 | STATIC void |
cea2e8a9 | 793 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
794 | { |
795 | if (s && *s) { | |
11343788 | 796 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 797 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 798 | force_next(WORD); |
748a9306 | 799 | if (kind) { |
e858de61 | 800 | dTHR; /* just for in_eval */ |
11343788 | 801 | o->op_private = OPpCONST_ENTERED; |
55497cff | 802 | /* XXX see note in pp_entereval() for why we forgo typo |
803 | warnings if the symbol must be introduced in an eval. | |
804 | GSAR 96-10-12 */ | |
3280af22 | 805 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
806 | kind == '$' ? SVt_PV : |
807 | kind == '@' ? SVt_PVAV : | |
808 | kind == '%' ? SVt_PVHV : | |
809 | SVt_PVGV | |
810 | ); | |
748a9306 | 811 | } |
79072805 LW |
812 | } |
813 | } | |
814 | ||
1571675a GS |
815 | NV |
816 | Perl_str_to_version(pTHX_ SV *sv) | |
817 | { | |
818 | NV retval = 0.0; | |
819 | NV nshift = 1.0; | |
820 | STRLEN len; | |
821 | char *start = SvPVx(sv,len); | |
822 | bool utf = SvUTF8(sv); | |
823 | char *end = start + len; | |
824 | while (start < end) { | |
825 | I32 skip; | |
826 | UV n; | |
827 | if (utf) | |
828 | n = utf8_to_uv((U8*)start, &skip); | |
829 | else { | |
830 | n = *(U8*)start; | |
831 | skip = 1; | |
832 | } | |
833 | retval += ((NV)n)/nshift; | |
834 | start += skip; | |
835 | nshift *= 1000; | |
836 | } | |
837 | return retval; | |
838 | } | |
839 | ||
ffb4593c NT |
840 | /* |
841 | * S_force_version | |
842 | * Forces the next token to be a version number. | |
843 | */ | |
844 | ||
76e3520e | 845 | STATIC char * |
cea2e8a9 | 846 | S_force_version(pTHX_ char *s) |
89bfa8cd | 847 | { |
848 | OP *version = Nullop; | |
44dcb63b | 849 | char *d; |
89bfa8cd | 850 | |
851 | s = skipspace(s); | |
852 | ||
44dcb63b | 853 | d = s; |
dd629d5b | 854 | if (*d == 'v') |
44dcb63b | 855 | d++; |
44dcb63b | 856 | if (isDIGIT(*d)) { |
a7cb1f99 | 857 | for (; isDIGIT(*d) || *d == '_' || *d == '.'; d++); |
9f3d182e | 858 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 859 | SV *ver; |
89bfa8cd | 860 | s = scan_num(s); |
89bfa8cd | 861 | version = yylval.opval; |
dd629d5b GS |
862 | ver = cSVOPx(version)->op_sv; |
863 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
1571675a GS |
864 | SvUPGRADE(ver, SVt_PVNV); |
865 | SvNVX(ver) = str_to_version(ver); | |
866 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 867 | } |
89bfa8cd | 868 | } |
869 | } | |
870 | ||
871 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 872 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 873 | force_next(WORD); |
874 | ||
875 | return (s); | |
876 | } | |
877 | ||
ffb4593c NT |
878 | /* |
879 | * S_tokeq | |
880 | * Tokenize a quoted string passed in as an SV. It finds the next | |
881 | * chunk, up to end of string or a backslash. It may make a new | |
882 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
883 | * turns \\ into \. | |
884 | */ | |
885 | ||
76e3520e | 886 | STATIC SV * |
cea2e8a9 | 887 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
888 | { |
889 | register char *s; | |
890 | register char *send; | |
891 | register char *d; | |
b3ac6de7 IZ |
892 | STRLEN len = 0; |
893 | SV *pv = sv; | |
79072805 LW |
894 | |
895 | if (!SvLEN(sv)) | |
b3ac6de7 | 896 | goto finish; |
79072805 | 897 | |
a0d0e21e | 898 | s = SvPV_force(sv, len); |
748a9306 | 899 | if (SvIVX(sv) == -1) |
b3ac6de7 | 900 | goto finish; |
463ee0b2 | 901 | send = s + len; |
79072805 LW |
902 | while (s < send && *s != '\\') |
903 | s++; | |
904 | if (s == send) | |
b3ac6de7 | 905 | goto finish; |
79072805 | 906 | d = s; |
3280af22 | 907 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 908 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
909 | while (s < send) { |
910 | if (*s == '\\') { | |
a0d0e21e | 911 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
912 | s++; /* all that, just for this */ |
913 | } | |
914 | *d++ = *s++; | |
915 | } | |
916 | *d = '\0'; | |
463ee0b2 | 917 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 918 | finish: |
3280af22 | 919 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 920 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
921 | return sv; |
922 | } | |
923 | ||
ffb4593c NT |
924 | /* |
925 | * Now come three functions related to double-quote context, | |
926 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
927 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
928 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
929 | * to handle functions and concatenation. | |
930 | * They assume that whoever calls them will be setting up a fake | |
931 | * join call, because each subthing puts a ',' after it. This lets | |
932 | * "lower \luPpEr" | |
933 | * become | |
934 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
935 | * | |
936 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
937 | * arguments and join's arguments are created or not). | |
938 | */ | |
939 | ||
940 | /* | |
941 | * S_sublex_start | |
942 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
943 | * | |
944 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
945 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
946 | * | |
947 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
948 | * | |
949 | * Everything else becomes a FUNC. | |
950 | * | |
951 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
952 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
953 | * call to S_sublex_push(). | |
954 | */ | |
955 | ||
76e3520e | 956 | STATIC I32 |
cea2e8a9 | 957 | S_sublex_start(pTHX) |
79072805 LW |
958 | { |
959 | register I32 op_type = yylval.ival; | |
79072805 LW |
960 | |
961 | if (op_type == OP_NULL) { | |
3280af22 NIS |
962 | yylval.opval = PL_lex_op; |
963 | PL_lex_op = Nullop; | |
79072805 LW |
964 | return THING; |
965 | } | |
966 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 967 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
968 | |
969 | if (SvTYPE(sv) == SVt_PVIV) { | |
970 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
971 | STRLEN len; | |
972 | char *p; | |
973 | SV *nsv; | |
974 | ||
975 | p = SvPV(sv, len); | |
79cb57f6 | 976 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
977 | SvREFCNT_dec(sv); |
978 | sv = nsv; | |
979 | } | |
980 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 981 | PL_lex_stuff = Nullsv; |
79072805 LW |
982 | return THING; |
983 | } | |
984 | ||
3280af22 NIS |
985 | PL_sublex_info.super_state = PL_lex_state; |
986 | PL_sublex_info.sub_inwhat = op_type; | |
987 | PL_sublex_info.sub_op = PL_lex_op; | |
988 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 989 | |
3280af22 NIS |
990 | PL_expect = XTERM; |
991 | if (PL_lex_op) { | |
992 | yylval.opval = PL_lex_op; | |
993 | PL_lex_op = Nullop; | |
55497cff | 994 | return PMFUNC; |
995 | } | |
996 | else | |
997 | return FUNC; | |
998 | } | |
999 | ||
ffb4593c NT |
1000 | /* |
1001 | * S_sublex_push | |
1002 | * Create a new scope to save the lexing state. The scope will be | |
1003 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1004 | * to the uc, lc, etc. found before. | |
1005 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1006 | */ | |
1007 | ||
76e3520e | 1008 | STATIC I32 |
cea2e8a9 | 1009 | S_sublex_push(pTHX) |
55497cff | 1010 | { |
0f15f207 | 1011 | dTHR; |
f46d017c | 1012 | ENTER; |
55497cff | 1013 | |
3280af22 NIS |
1014 | PL_lex_state = PL_sublex_info.super_state; |
1015 | SAVEI32(PL_lex_dojoin); | |
1016 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1017 | SAVEI32(PL_lex_casemods); |
1018 | SAVEI32(PL_lex_starts); | |
1019 | SAVEI32(PL_lex_state); | |
7766f137 | 1020 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1021 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1022 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
1023 | SAVEPPTR(PL_bufptr); |
1024 | SAVEPPTR(PL_oldbufptr); | |
1025 | SAVEPPTR(PL_oldoldbufptr); | |
1026 | SAVEPPTR(PL_linestart); | |
1027 | SAVESPTR(PL_linestr); | |
1028 | SAVEPPTR(PL_lex_brackstack); | |
1029 | SAVEPPTR(PL_lex_casestack); | |
1030 | ||
1031 | PL_linestr = PL_lex_stuff; | |
1032 | PL_lex_stuff = Nullsv; | |
1033 | ||
9cbb5ea2 GS |
1034 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1035 | = SvPVX(PL_linestr); | |
3280af22 NIS |
1036 | PL_bufend += SvCUR(PL_linestr); |
1037 | SAVEFREESV(PL_linestr); | |
1038 | ||
1039 | PL_lex_dojoin = FALSE; | |
1040 | PL_lex_brackets = 0; | |
3280af22 NIS |
1041 | New(899, PL_lex_brackstack, 120, char); |
1042 | New(899, PL_lex_casestack, 12, char); | |
1043 | SAVEFREEPV(PL_lex_brackstack); | |
1044 | SAVEFREEPV(PL_lex_casestack); | |
1045 | PL_lex_casemods = 0; | |
1046 | *PL_lex_casestack = '\0'; | |
1047 | PL_lex_starts = 0; | |
1048 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1049 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1050 | |
1051 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1052 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1053 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1054 | else |
3280af22 | 1055 | PL_lex_inpat = Nullop; |
79072805 | 1056 | |
55497cff | 1057 | return '('; |
79072805 LW |
1058 | } |
1059 | ||
ffb4593c NT |
1060 | /* |
1061 | * S_sublex_done | |
1062 | * Restores lexer state after a S_sublex_push. | |
1063 | */ | |
1064 | ||
76e3520e | 1065 | STATIC I32 |
cea2e8a9 | 1066 | S_sublex_done(pTHX) |
79072805 | 1067 | { |
3280af22 NIS |
1068 | if (!PL_lex_starts++) { |
1069 | PL_expect = XOPERATOR; | |
79cb57f6 | 1070 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1071 | return THING; |
1072 | } | |
1073 | ||
3280af22 NIS |
1074 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1075 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1076 | return yylex(); |
79072805 LW |
1077 | } |
1078 | ||
ffb4593c | 1079 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1080 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1081 | PL_linestr = PL_lex_repl; | |
1082 | PL_lex_inpat = 0; | |
1083 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1084 | PL_bufend += SvCUR(PL_linestr); | |
1085 | SAVEFREESV(PL_linestr); | |
1086 | PL_lex_dojoin = FALSE; | |
1087 | PL_lex_brackets = 0; | |
3280af22 NIS |
1088 | PL_lex_casemods = 0; |
1089 | *PL_lex_casestack = '\0'; | |
1090 | PL_lex_starts = 0; | |
25da4f38 | 1091 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1092 | PL_lex_state = LEX_INTERPNORMAL; |
1093 | PL_lex_starts++; | |
e9fa98b2 HS |
1094 | /* we don't clear PL_lex_repl here, so that we can check later |
1095 | whether this is an evalled subst; that means we rely on the | |
1096 | logic to ensure sublex_done() is called again only via the | |
1097 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1098 | } |
e9fa98b2 | 1099 | else { |
3280af22 | 1100 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1101 | PL_lex_repl = Nullsv; |
1102 | } | |
79072805 | 1103 | return ','; |
ffed7fef LW |
1104 | } |
1105 | else { | |
f46d017c | 1106 | LEAVE; |
3280af22 NIS |
1107 | PL_bufend = SvPVX(PL_linestr); |
1108 | PL_bufend += SvCUR(PL_linestr); | |
1109 | PL_expect = XOPERATOR; | |
09bef843 | 1110 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1111 | return ')'; |
ffed7fef LW |
1112 | } |
1113 | } | |
1114 | ||
02aa26ce NT |
1115 | /* |
1116 | scan_const | |
1117 | ||
1118 | Extracts a pattern, double-quoted string, or transliteration. This | |
1119 | is terrifying code. | |
1120 | ||
3280af22 NIS |
1121 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1122 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1123 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1124 | ||
9b599b2a GS |
1125 | Returns a pointer to the character scanned up to. Iff this is |
1126 | advanced from the start pointer supplied (ie if anything was | |
1127 | successfully parsed), will leave an OP for the substring scanned | |
1128 | in yylval. Caller must intuit reason for not parsing further | |
1129 | by looking at the next characters herself. | |
1130 | ||
02aa26ce NT |
1131 | In patterns: |
1132 | backslashes: | |
1133 | double-quoted style: \r and \n | |
1134 | regexp special ones: \D \s | |
1135 | constants: \x3 | |
1136 | backrefs: \1 (deprecated in substitution replacements) | |
1137 | case and quoting: \U \Q \E | |
1138 | stops on @ and $, but not for $ as tail anchor | |
1139 | ||
1140 | In transliterations: | |
1141 | characters are VERY literal, except for - not at the start or end | |
1142 | of the string, which indicates a range. scan_const expands the | |
1143 | range to the full set of intermediate characters. | |
1144 | ||
1145 | In double-quoted strings: | |
1146 | backslashes: | |
1147 | double-quoted style: \r and \n | |
1148 | constants: \x3 | |
1149 | backrefs: \1 (deprecated) | |
1150 | case and quoting: \U \Q \E | |
1151 | stops on @ and $ | |
1152 | ||
1153 | scan_const does *not* construct ops to handle interpolated strings. | |
1154 | It stops processing as soon as it finds an embedded $ or @ variable | |
1155 | and leaves it to the caller to work out what's going on. | |
1156 | ||
1157 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1158 | ||
1159 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1160 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1161 | followed by one of ")| \n\t" | |
1162 | ||
1163 | \1 (backreferences) are turned into $1 | |
1164 | ||
1165 | The structure of the code is | |
1166 | while (there's a character to process) { | |
1167 | handle transliteration ranges | |
1168 | skip regexp comments | |
1169 | skip # initiated comments in //x patterns | |
1170 | check for embedded @foo | |
1171 | check for embedded scalars | |
1172 | if (backslash) { | |
1173 | leave intact backslashes from leave (below) | |
1174 | deprecate \1 in strings and sub replacements | |
1175 | handle string-changing backslashes \l \U \Q \E, etc. | |
1176 | switch (what was escaped) { | |
1177 | handle - in a transliteration (becomes a literal -) | |
1178 | handle \132 octal characters | |
1179 | handle 0x15 hex characters | |
1180 | handle \cV (control V) | |
1181 | handle printf backslashes (\f, \r, \n, etc) | |
1182 | } (end switch) | |
1183 | } (end if backslash) | |
1184 | } (end while character to read) | |
1185 | ||
1186 | */ | |
1187 | ||
76e3520e | 1188 | STATIC char * |
cea2e8a9 | 1189 | S_scan_const(pTHX_ char *start) |
79072805 | 1190 | { |
3280af22 | 1191 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1192 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1193 | register char *s = start; /* start of the constant */ | |
1194 | register char *d = SvPVX(sv); /* destination for copies */ | |
1195 | bool dorange = FALSE; /* are we in a translit range? */ | |
7e2040f0 | 1196 | bool has_utf = FALSE; /* embedded \x{} */ |
02aa26ce | 1197 | I32 len; /* ? */ |
012bcf8d GS |
1198 | UV uv; |
1199 | ||
ac2262e3 | 1200 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1201 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1202 | : UTF; | |
ac2262e3 | 1203 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1204 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1205 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1206 | : UTF; |
dff6d3cd | 1207 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1208 | PL_lex_inpat |
4a2d328f | 1209 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1210 | : ""; |
79072805 LW |
1211 | |
1212 | while (s < send || dorange) { | |
02aa26ce | 1213 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1214 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1215 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1216 | if (dorange) { |
02aa26ce | 1217 | I32 i; /* current expanded character */ |
8ada0baa | 1218 | I32 min; /* first character in range */ |
02aa26ce NT |
1219 | I32 max; /* last character in range */ |
1220 | ||
1221 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1222 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1223 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1224 | d -= 2; /* eat the first char and the - */ |
1225 | ||
8ada0baa JH |
1226 | min = (U8)*d; /* first char in range */ |
1227 | max = (U8)d[1]; /* last char in range */ | |
1228 | ||
1229 | #ifndef ASCIIish | |
1230 | if ((isLOWER(min) && isLOWER(max)) || | |
1231 | (isUPPER(min) && isUPPER(max))) { | |
1232 | if (isLOWER(min)) { | |
1233 | for (i = min; i <= max; i++) | |
1234 | if (isLOWER(i)) | |
1235 | *d++ = i; | |
1236 | } else { | |
1237 | for (i = min; i <= max; i++) | |
1238 | if (isUPPER(i)) | |
1239 | *d++ = i; | |
1240 | } | |
1241 | } | |
1242 | else | |
1243 | #endif | |
1244 | for (i = min; i <= max; i++) | |
1245 | *d++ = i; | |
02aa26ce NT |
1246 | |
1247 | /* mark the range as done, and continue */ | |
79072805 LW |
1248 | dorange = FALSE; |
1249 | continue; | |
1250 | } | |
02aa26ce NT |
1251 | |
1252 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1253 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1254 | if (utf) { |
a176fa2a | 1255 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1256 | s++; |
1257 | continue; | |
1258 | } | |
79072805 LW |
1259 | dorange = TRUE; |
1260 | s++; | |
1261 | } | |
1262 | } | |
02aa26ce NT |
1263 | |
1264 | /* if we get here, we're not doing a transliteration */ | |
1265 | ||
0f5d15d6 IZ |
1266 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1267 | except for the last char, which will be done separately. */ | |
3280af22 | 1268 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1269 | if (s[2] == '#') { |
1270 | while (s < send && *s != ')') | |
1271 | *d++ = *s++; | |
0f5d15d6 IZ |
1272 | } else if (s[2] == '{' |
1273 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1274 | I32 count = 1; |
0f5d15d6 | 1275 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1276 | char c; |
1277 | ||
d9f97599 GS |
1278 | while (count && (c = *regparse)) { |
1279 | if (c == '\\' && regparse[1]) | |
1280 | regparse++; | |
cc6b7395 IZ |
1281 | else if (c == '{') |
1282 | count++; | |
1283 | else if (c == '}') | |
1284 | count--; | |
d9f97599 | 1285 | regparse++; |
cc6b7395 | 1286 | } |
5bdf89e7 IZ |
1287 | if (*regparse != ')') { |
1288 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1289 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1290 | } |
0f5d15d6 | 1291 | while (s < regparse) |
cc6b7395 IZ |
1292 | *d++ = *s++; |
1293 | } | |
748a9306 | 1294 | } |
02aa26ce NT |
1295 | |
1296 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1297 | else if (*s == '#' && PL_lex_inpat && |
1298 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1299 | while (s+1 < send && *s != '\n') |
1300 | *d++ = *s++; | |
1301 | } | |
02aa26ce NT |
1302 | |
1303 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
7e2040f0 GS |
1304 | else if (*s == '@' && s[1] |
1305 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$", s[1]))) | |
79072805 | 1306 | break; |
02aa26ce NT |
1307 | |
1308 | /* check for embedded scalars. only stop if we're sure it's a | |
1309 | variable. | |
1310 | */ | |
79072805 | 1311 | else if (*s == '$') { |
3280af22 | 1312 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1313 | break; |
c277df42 | 1314 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1315 | break; /* in regexp, $ might be tail anchor */ |
1316 | } | |
02aa26ce | 1317 | |
a0ed51b3 LW |
1318 | /* (now in tr/// code again) */ |
1319 | ||
d008e5eb | 1320 | if (*s & 0x80 && thisutf) { |
012bcf8d GS |
1321 | (void)utf8_to_uv((U8*)s, &len); |
1322 | if (len == 1) { | |
1323 | /* illegal UTF8, make it valid */ | |
012bcf8d | 1324 | char *old_pvx = SvPVX(sv); |
bee7c419 GS |
1325 | /* need space for one extra char (NOTE: SvCUR() not set here) */ |
1326 | d = SvGROW(sv, SvLEN(sv) + 1) + (d - old_pvx); | |
012bcf8d GS |
1327 | d = (char*)uv_to_utf8((U8*)d, (U8)*s++); |
1328 | } | |
1329 | else { | |
1330 | while (len--) | |
1331 | *d++ = *s++; | |
1332 | } | |
1333 | has_utf = TRUE; | |
1334 | continue; | |
a0ed51b3 LW |
1335 | } |
1336 | ||
02aa26ce | 1337 | /* backslashes */ |
79072805 LW |
1338 | if (*s == '\\' && s+1 < send) { |
1339 | s++; | |
02aa26ce NT |
1340 | |
1341 | /* some backslashes we leave behind */ | |
c9f97d15 | 1342 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1343 | *d++ = '\\'; |
1344 | *d++ = *s++; | |
1345 | continue; | |
1346 | } | |
02aa26ce NT |
1347 | |
1348 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1349 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1350 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1351 | { |
d008e5eb | 1352 | dTHR; /* only for ckWARN */ |
599cee73 | 1353 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1354 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1355 | *--s = '$'; |
1356 | break; | |
1357 | } | |
02aa26ce NT |
1358 | |
1359 | /* string-change backslash escapes */ | |
3280af22 | 1360 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1361 | --s; |
1362 | break; | |
1363 | } | |
02aa26ce NT |
1364 | |
1365 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1366 | switch (*s) { |
02aa26ce NT |
1367 | |
1368 | /* quoted - in transliterations */ | |
79072805 | 1369 | case '-': |
3280af22 | 1370 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1371 | *d++ = *s++; |
1372 | continue; | |
1373 | } | |
1374 | /* FALL THROUGH */ | |
1375 | default: | |
11b8faa4 JH |
1376 | { |
1377 | dTHR; | |
e476b1b5 GS |
1378 | if (ckWARN(WARN_MISC) && isALPHA(*s)) |
1379 | Perl_warner(aTHX_ WARN_MISC, | |
11b8faa4 JH |
1380 | "Unrecognized escape \\%c passed through", |
1381 | *s); | |
1382 | /* default action is to copy the quoted character */ | |
1383 | *d++ = *s++; | |
1384 | continue; | |
1385 | } | |
02aa26ce NT |
1386 | |
1387 | /* \132 indicates an octal constant */ | |
79072805 LW |
1388 | case '0': case '1': case '2': case '3': |
1389 | case '4': case '5': case '6': case '7': | |
012bcf8d | 1390 | uv = (UV)scan_oct(s, 3, &len); |
79072805 | 1391 | s += len; |
012bcf8d | 1392 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1393 | |
1394 | /* \x24 indicates a hex constant */ | |
79072805 | 1395 | case 'x': |
a0ed51b3 LW |
1396 | ++s; |
1397 | if (*s == '{') { | |
1398 | char* e = strchr(s, '}'); | |
adaeee49 | 1399 | if (!e) { |
a0ed51b3 | 1400 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1401 | e = s; |
1402 | } | |
012bcf8d GS |
1403 | uv = (UV)scan_hex(s + 1, e - s - 1, &len); |
1404 | s = e + 1; | |
a0ed51b3 LW |
1405 | } |
1406 | else { | |
012bcf8d GS |
1407 | uv = (UV)scan_hex(s, 2, &len); |
1408 | s += len; | |
1409 | } | |
1410 | ||
1411 | NUM_ESCAPE_INSERT: | |
1412 | /* Insert oct or hex escaped character. | |
1413 | * There will always enough room in sv since such escapes will | |
1414 | * be longer than any utf8 sequence they can end up as | |
1415 | */ | |
1416 | if (uv > 127) { | |
1417 | if (!thisutf && !has_utf && uv > 255) { | |
1418 | /* might need to recode whatever we have accumulated so far | |
1419 | * if it contains any hibit chars | |
1420 | */ | |
1421 | int hicount = 0; | |
1422 | char *c; | |
1423 | for (c = SvPVX(sv); c < d; c++) { | |
1424 | if (*c & 0x80) | |
1425 | hicount++; | |
1426 | } | |
1427 | if (hicount) { | |
1428 | char *old_pvx = SvPVX(sv); | |
1429 | char *src, *dst; | |
1430 | d = SvGROW(sv, SvCUR(sv) + hicount + 1) + (d - old_pvx); | |
1431 | ||
1432 | src = d - 1; | |
1433 | d += hicount; | |
1434 | dst = d - 1; | |
1435 | ||
1436 | while (src < dst) { | |
1437 | if (*src & 0x80) { | |
1438 | dst--; | |
1439 | uv_to_utf8((U8*)dst, (U8)*src--); | |
1440 | dst--; | |
1441 | } | |
1442 | else { | |
1443 | *dst-- = *src--; | |
1444 | } | |
1445 | } | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | if (thisutf || uv > 255) { | |
1450 | d = (char*)uv_to_utf8((U8*)d, uv); | |
7e2040f0 | 1451 | has_utf = TRUE; |
012bcf8d | 1452 | } |
a0ed51b3 | 1453 | else { |
012bcf8d | 1454 | *d++ = (char)uv; |
a0ed51b3 | 1455 | } |
012bcf8d GS |
1456 | } |
1457 | else { | |
1458 | *d++ = (char)uv; | |
a0ed51b3 | 1459 | } |
79072805 | 1460 | continue; |
02aa26ce | 1461 | |
4a2d328f IZ |
1462 | /* \N{latin small letter a} is a named character */ |
1463 | case 'N': | |
423cee85 JH |
1464 | ++s; |
1465 | if (*s == '{') { | |
1466 | char* e = strchr(s, '}'); | |
1467 | HV *hv; | |
1468 | SV **svp; | |
1469 | SV *res, *cv; | |
1470 | STRLEN len; | |
1471 | char *str; | |
1472 | char *why = Nullch; | |
1473 | ||
1474 | if (!e) { | |
5777a3f7 | 1475 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1476 | e = s - 1; |
1477 | goto cont_scan; | |
1478 | } | |
1479 | res = newSVpvn(s + 1, e - s - 1); | |
1480 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1481 | res, Nullsv, "\\N{...}" ); |
423cee85 JH |
1482 | str = SvPV(res,len); |
1483 | if (len > e - s + 4) { | |
1484 | char *odest = SvPVX(sv); | |
1485 | ||
1486 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1487 | d = SvPVX(sv) + (d - odest); | |
1488 | } | |
1489 | Copy(str, d, len, char); | |
1490 | d += len; | |
1491 | SvREFCNT_dec(res); | |
1492 | cont_scan: | |
1493 | s = e + 1; | |
1494 | } | |
1495 | else | |
5777a3f7 | 1496 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1497 | continue; |
1498 | ||
02aa26ce | 1499 | /* \c is a control character */ |
79072805 LW |
1500 | case 'c': |
1501 | s++; | |
9d116dd7 JH |
1502 | #ifdef EBCDIC |
1503 | *d = *s++; | |
1504 | if (isLOWER(*d)) | |
1505 | *d = toUPPER(*d); | |
1506 | *d++ = toCTRL(*d); | |
1507 | #else | |
bbce6d69 | 1508 | len = *s++; |
1509 | *d++ = toCTRL(len); | |
9d116dd7 | 1510 | #endif |
79072805 | 1511 | continue; |
02aa26ce NT |
1512 | |
1513 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1514 | case 'b': |
1515 | *d++ = '\b'; | |
1516 | break; | |
1517 | case 'n': | |
1518 | *d++ = '\n'; | |
1519 | break; | |
1520 | case 'r': | |
1521 | *d++ = '\r'; | |
1522 | break; | |
1523 | case 'f': | |
1524 | *d++ = '\f'; | |
1525 | break; | |
1526 | case 't': | |
1527 | *d++ = '\t'; | |
1528 | break; | |
34a3fe2a PP |
1529 | #ifdef EBCDIC |
1530 | case 'e': | |
1531 | *d++ = '\047'; /* CP 1047 */ | |
1532 | break; | |
1533 | case 'a': | |
1534 | *d++ = '\057'; /* CP 1047 */ | |
1535 | break; | |
1536 | #else | |
79072805 LW |
1537 | case 'e': |
1538 | *d++ = '\033'; | |
1539 | break; | |
1540 | case 'a': | |
1541 | *d++ = '\007'; | |
1542 | break; | |
34a3fe2a | 1543 | #endif |
02aa26ce NT |
1544 | } /* end switch */ |
1545 | ||
79072805 LW |
1546 | s++; |
1547 | continue; | |
02aa26ce NT |
1548 | } /* end if (backslash) */ |
1549 | ||
79072805 | 1550 | *d++ = *s++; |
02aa26ce NT |
1551 | } /* while loop to process each character */ |
1552 | ||
1553 | /* terminate the string and set up the sv */ | |
79072805 | 1554 | *d = '\0'; |
463ee0b2 | 1555 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 | 1556 | SvPOK_on(sv); |
7e2040f0 GS |
1557 | if (has_utf) |
1558 | SvUTF8_on(sv); | |
79072805 | 1559 | |
02aa26ce | 1560 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1561 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1562 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1563 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1564 | } |
02aa26ce | 1565 | |
9b599b2a | 1566 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1567 | if (s > PL_bufptr) { |
1568 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1569 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1570 | sv, Nullsv, |
3280af22 | 1571 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1572 | ? "tr" |
3280af22 | 1573 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1574 | ? "s" |
1575 | : "qq"))); | |
79072805 | 1576 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1577 | } else |
8990e307 | 1578 | SvREFCNT_dec(sv); |
79072805 LW |
1579 | return s; |
1580 | } | |
1581 | ||
ffb4593c NT |
1582 | /* S_intuit_more |
1583 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1584 | * FALSE otherwise. | |
ffb4593c NT |
1585 | * |
1586 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1587 | * | |
1588 | * ->[ and ->{ return TRUE | |
1589 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1590 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1591 | * if we're in a pattern and the first char is a { | |
1592 | * {4,5} (any digits around the comma) returns FALSE | |
1593 | * if we're in a pattern and the first char is a [ | |
1594 | * [] returns FALSE | |
1595 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1596 | * character class or not. It has to deal with things like | |
1597 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1598 | * anything else returns TRUE | |
1599 | */ | |
1600 | ||
9cbb5ea2 GS |
1601 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1602 | ||
76e3520e | 1603 | STATIC int |
cea2e8a9 | 1604 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1605 | { |
3280af22 | 1606 | if (PL_lex_brackets) |
79072805 LW |
1607 | return TRUE; |
1608 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1609 | return TRUE; | |
1610 | if (*s != '{' && *s != '[') | |
1611 | return FALSE; | |
3280af22 | 1612 | if (!PL_lex_inpat) |
79072805 LW |
1613 | return TRUE; |
1614 | ||
1615 | /* In a pattern, so maybe we have {n,m}. */ | |
1616 | if (*s == '{') { | |
1617 | s++; | |
1618 | if (!isDIGIT(*s)) | |
1619 | return TRUE; | |
1620 | while (isDIGIT(*s)) | |
1621 | s++; | |
1622 | if (*s == ',') | |
1623 | s++; | |
1624 | while (isDIGIT(*s)) | |
1625 | s++; | |
1626 | if (*s == '}') | |
1627 | return FALSE; | |
1628 | return TRUE; | |
1629 | ||
1630 | } | |
1631 | ||
1632 | /* On the other hand, maybe we have a character class */ | |
1633 | ||
1634 | s++; | |
1635 | if (*s == ']' || *s == '^') | |
1636 | return FALSE; | |
1637 | else { | |
ffb4593c | 1638 | /* this is terrifying, and it works */ |
79072805 LW |
1639 | int weight = 2; /* let's weigh the evidence */ |
1640 | char seen[256]; | |
f27ffc4a | 1641 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1642 | char *send = strchr(s,']'); |
3280af22 | 1643 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1644 | |
1645 | if (!send) /* has to be an expression */ | |
1646 | return TRUE; | |
1647 | ||
1648 | Zero(seen,256,char); | |
1649 | if (*s == '$') | |
1650 | weight -= 3; | |
1651 | else if (isDIGIT(*s)) { | |
1652 | if (s[1] != ']') { | |
1653 | if (isDIGIT(s[1]) && s[2] == ']') | |
1654 | weight -= 10; | |
1655 | } | |
1656 | else | |
1657 | weight -= 100; | |
1658 | } | |
1659 | for (; s < send; s++) { | |
1660 | last_un_char = un_char; | |
1661 | un_char = (unsigned char)*s; | |
1662 | switch (*s) { | |
1663 | case '@': | |
1664 | case '&': | |
1665 | case '$': | |
1666 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1667 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1668 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1669 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1670 | weight -= 100; |
1671 | else | |
1672 | weight -= 10; | |
1673 | } | |
1674 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1675 | strchr("[#!%*<>()-=",s[1])) { |
1676 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1677 | weight -= 10; |
1678 | else | |
1679 | weight -= 1; | |
1680 | } | |
1681 | break; | |
1682 | case '\\': | |
1683 | un_char = 254; | |
1684 | if (s[1]) { | |
93a17b20 | 1685 | if (strchr("wds]",s[1])) |
79072805 LW |
1686 | weight += 100; |
1687 | else if (seen['\''] || seen['"']) | |
1688 | weight += 1; | |
93a17b20 | 1689 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1690 | weight += 40; |
1691 | else if (isDIGIT(s[1])) { | |
1692 | weight += 40; | |
1693 | while (s[1] && isDIGIT(s[1])) | |
1694 | s++; | |
1695 | } | |
1696 | } | |
1697 | else | |
1698 | weight += 100; | |
1699 | break; | |
1700 | case '-': | |
1701 | if (s[1] == '\\') | |
1702 | weight += 50; | |
93a17b20 | 1703 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1704 | weight += 30; |
93a17b20 | 1705 | if (strchr("zZ79~",s[1])) |
79072805 | 1706 | weight += 30; |
f27ffc4a GS |
1707 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1708 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1709 | break; |
1710 | default: | |
93a17b20 | 1711 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1712 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1713 | char *d = tmpbuf; | |
1714 | while (isALPHA(*s)) | |
1715 | *d++ = *s++; | |
1716 | *d = '\0'; | |
1717 | if (keyword(tmpbuf, d - tmpbuf)) | |
1718 | weight -= 150; | |
1719 | } | |
1720 | if (un_char == last_un_char + 1) | |
1721 | weight += 5; | |
1722 | weight -= seen[un_char]; | |
1723 | break; | |
1724 | } | |
1725 | seen[un_char]++; | |
1726 | } | |
1727 | if (weight >= 0) /* probably a character class */ | |
1728 | return FALSE; | |
1729 | } | |
1730 | ||
1731 | return TRUE; | |
1732 | } | |
ffed7fef | 1733 | |
ffb4593c NT |
1734 | /* |
1735 | * S_intuit_method | |
1736 | * | |
1737 | * Does all the checking to disambiguate | |
1738 | * foo bar | |
1739 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1740 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1741 | * | |
1742 | * First argument is the stuff after the first token, e.g. "bar". | |
1743 | * | |
1744 | * Not a method if bar is a filehandle. | |
1745 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1746 | * Not a method if it's really "Foo $bar" | |
1747 | * Method if it's "foo $bar" | |
1748 | * Not a method if it's really "print foo $bar" | |
1749 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1750 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1751 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1752 | * => |
1753 | */ | |
1754 | ||
76e3520e | 1755 | STATIC int |
cea2e8a9 | 1756 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1757 | { |
1758 | char *s = start + (*start == '$'); | |
3280af22 | 1759 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1760 | STRLEN len; |
1761 | GV* indirgv; | |
1762 | ||
1763 | if (gv) { | |
b6c543e3 | 1764 | CV *cv; |
a0d0e21e LW |
1765 | if (GvIO(gv)) |
1766 | return 0; | |
b6c543e3 IZ |
1767 | if ((cv = GvCVu(gv))) { |
1768 | char *proto = SvPVX(cv); | |
1769 | if (proto) { | |
1770 | if (*proto == ';') | |
1771 | proto++; | |
1772 | if (*proto == '*') | |
1773 | return 0; | |
1774 | } | |
1775 | } else | |
a0d0e21e LW |
1776 | gv = 0; |
1777 | } | |
8903cb82 | 1778 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1779 | /* start is the beginning of the possible filehandle/object, |
1780 | * and s is the end of it | |
1781 | * tmpbuf is a copy of it | |
1782 | */ | |
1783 | ||
a0d0e21e | 1784 | if (*start == '$') { |
3280af22 | 1785 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1786 | return 0; |
1787 | s = skipspace(s); | |
3280af22 NIS |
1788 | PL_bufptr = start; |
1789 | PL_expect = XREF; | |
a0d0e21e LW |
1790 | return *s == '(' ? FUNCMETH : METHOD; |
1791 | } | |
1792 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1793 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1794 | len -= 2; | |
1795 | tmpbuf[len] = '\0'; | |
1796 | goto bare_package; | |
1797 | } | |
1798 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1799 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1800 | return 0; |
1801 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1802 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1803 | s = skipspace(s); |
3280af22 | 1804 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1805 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1806 | bare_package: |
3280af22 | 1807 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1808 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1809 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1810 | PL_expect = XTERM; | |
a0d0e21e | 1811 | force_next(WORD); |
3280af22 | 1812 | PL_bufptr = s; |
a0d0e21e LW |
1813 | return *s == '(' ? FUNCMETH : METHOD; |
1814 | } | |
1815 | } | |
1816 | return 0; | |
1817 | } | |
1818 | ||
ffb4593c NT |
1819 | /* |
1820 | * S_incl_perldb | |
1821 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1822 | * is set, it will return the contents of that, otherwise a | |
1823 | * compile-time require of perl5db.pl. | |
1824 | */ | |
1825 | ||
76e3520e | 1826 | STATIC char* |
cea2e8a9 | 1827 | S_incl_perldb(pTHX) |
a0d0e21e | 1828 | { |
3280af22 | 1829 | if (PL_perldb) { |
76e3520e | 1830 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1831 | |
1832 | if (pdb) | |
1833 | return pdb; | |
61bb5906 | 1834 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1835 | return "BEGIN { require 'perl5db.pl' }"; |
1836 | } | |
1837 | return ""; | |
1838 | } | |
1839 | ||
1840 | ||
16d20bd9 AD |
1841 | /* Encoded script support. filter_add() effectively inserts a |
1842 | * 'pre-processing' function into the current source input stream. | |
1843 | * Note that the filter function only applies to the current source file | |
1844 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1845 | * | |
1846 | * The datasv parameter (which may be NULL) can be used to pass | |
1847 | * private data to this instance of the filter. The filter function | |
1848 | * can recover the SV using the FILTER_DATA macro and use it to | |
1849 | * store private buffers and state information. | |
1850 | * | |
1851 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1852 | * and the IoDIRP field is used to store the function pointer, |
1853 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1854 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1855 | * private use must be set using malloc'd pointers. | |
1856 | */ | |
16d20bd9 AD |
1857 | |
1858 | SV * | |
864dbfa3 | 1859 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1860 | { |
f4c556ac GS |
1861 | if (!funcp) |
1862 | return Nullsv; | |
1863 | ||
3280af22 NIS |
1864 | if (!PL_rsfp_filters) |
1865 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1866 | if (!datasv) |
8c52afec | 1867 | datasv = NEWSV(255,0); |
16d20bd9 | 1868 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1869 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1870 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1871 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1872 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1873 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1874 | av_unshift(PL_rsfp_filters, 1); |
1875 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1876 | return(datasv); |
1877 | } | |
1878 | ||
1879 | ||
1880 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1881 | void |
864dbfa3 | 1882 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1883 | { |
e0c19803 | 1884 | SV *datasv; |
f4c556ac | 1885 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1886 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1887 | return; |
1888 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1889 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1890 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1891 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1892 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1893 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1894 | |
16d20bd9 AD |
1895 | return; |
1896 | } | |
1897 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1898 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1899 | } |
1900 | ||
1901 | ||
1902 | /* Invoke the n'th filter function for the current rsfp. */ | |
1903 | I32 | |
864dbfa3 | 1904 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1905 | |
1906 | ||
1907 | /* 0 = read one text line */ | |
a0d0e21e | 1908 | { |
16d20bd9 AD |
1909 | filter_t funcp; |
1910 | SV *datasv = NULL; | |
e50aee73 | 1911 | |
3280af22 | 1912 | if (!PL_rsfp_filters) |
16d20bd9 | 1913 | return -1; |
3280af22 | 1914 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1915 | /* Provide a default input filter to make life easy. */ |
1916 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1917 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1918 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1919 | if (maxlen) { |
1920 | /* Want a block */ | |
1921 | int len ; | |
1922 | int old_len = SvCUR(buf_sv) ; | |
1923 | ||
1924 | /* ensure buf_sv is large enough */ | |
1925 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1926 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1927 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1928 | return -1; /* error */ |
1929 | else | |
1930 | return 0 ; /* end of file */ | |
1931 | } | |
16d20bd9 AD |
1932 | SvCUR_set(buf_sv, old_len + len) ; |
1933 | } else { | |
1934 | /* Want a line */ | |
3280af22 NIS |
1935 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1936 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1937 | return -1; /* error */ |
1938 | else | |
1939 | return 0 ; /* end of file */ | |
1940 | } | |
16d20bd9 AD |
1941 | } |
1942 | return SvCUR(buf_sv); | |
1943 | } | |
1944 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1945 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1946 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1947 | "filter_read %d: skipped (filter deleted)\n", | |
1948 | idx)); | |
16d20bd9 AD |
1949 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1950 | } | |
1951 | /* Get function pointer hidden within datasv */ | |
1952 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1953 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1954 | "filter_read %d: via function %p (%s)\n", | |
1955 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1956 | /* Call function. The function is expected to */ |
1957 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1958 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1959 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1960 | } |
1961 | ||
76e3520e | 1962 | STATIC char * |
cea2e8a9 | 1963 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1964 | { |
c39cd008 | 1965 | #ifdef PERL_CR_FILTER |
3280af22 | 1966 | if (!PL_rsfp_filters) { |
c39cd008 | 1967 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1968 | } |
1969 | #endif | |
3280af22 | 1970 | if (PL_rsfp_filters) { |
16d20bd9 | 1971 | |
55497cff | 1972 | if (!append) |
1973 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1974 | if (FILTER_READ(0, sv, 0) > 0) |
1975 | return ( SvPVX(sv) ) ; | |
1976 | else | |
1977 | return Nullch ; | |
1978 | } | |
9d116dd7 | 1979 | else |
fd049845 | 1980 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1981 | } |
1982 | ||
1983 | ||
748a9306 LW |
1984 | #ifdef DEBUGGING |
1985 | static char* exp_name[] = | |
09bef843 SB |
1986 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1987 | "ATTRTERM", "TERMBLOCK" | |
1988 | }; | |
748a9306 | 1989 | #endif |
463ee0b2 | 1990 | |
02aa26ce NT |
1991 | /* |
1992 | yylex | |
1993 | ||
1994 | Works out what to call the token just pulled out of the input | |
1995 | stream. The yacc parser takes care of taking the ops we return and | |
1996 | stitching them into a tree. | |
1997 | ||
1998 | Returns: | |
1999 | PRIVATEREF | |
2000 | ||
2001 | Structure: | |
2002 | if read an identifier | |
2003 | if we're in a my declaration | |
2004 | croak if they tried to say my($foo::bar) | |
2005 | build the ops for a my() declaration | |
2006 | if it's an access to a my() variable | |
2007 | are we in a sort block? | |
2008 | croak if my($a); $a <=> $b | |
2009 | build ops for access to a my() variable | |
2010 | if in a dq string, and they've said @foo and we can't find @foo | |
2011 | croak | |
2012 | build ops for a bareword | |
2013 | if we already built the token before, use it. | |
2014 | */ | |
2015 | ||
864dbfa3 GS |
2016 | int |
2017 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 2018 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 2019 | #else |
cea2e8a9 | 2020 | Perl_yylex(pTHX) |
864dbfa3 | 2021 | #endif |
378cc40b | 2022 | { |
11343788 | 2023 | dTHR; |
79072805 | 2024 | register char *s; |
378cc40b | 2025 | register char *d; |
79072805 | 2026 | register I32 tmp; |
463ee0b2 | 2027 | STRLEN len; |
161b471a NIS |
2028 | GV *gv = Nullgv; |
2029 | GV **gvp = 0; | |
a687059c | 2030 | |
a1a0e61e TD |
2031 | #ifdef USE_PURE_BISON |
2032 | yylval_pointer = lvalp; | |
2033 | yychar_pointer = lcharp; | |
2034 | #endif | |
2035 | ||
02aa26ce | 2036 | /* check if there's an identifier for us to look at */ |
3280af22 | 2037 | if (PL_pending_ident) { |
02aa26ce | 2038 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
2039 | char pit = PL_pending_ident; |
2040 | PL_pending_ident = 0; | |
bbce6d69 | 2041 | |
02aa26ce NT |
2042 | /* if we're in a my(), we can't allow dynamics here. |
2043 | $foo'bar has already been turned into $foo::bar, so | |
2044 | just check for colons. | |
2045 | ||
2046 | if it's a legal name, the OP is a PADANY. | |
2047 | */ | |
3280af22 | 2048 | if (PL_in_my) { |
77ca0c92 | 2049 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
2050 | if (strchr(PL_tokenbuf,':')) |
2051 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
2052 | "variable %s in \"our\"", | |
2053 | PL_tokenbuf)); | |
77ca0c92 LW |
2054 | tmp = pad_allocmy(PL_tokenbuf); |
2055 | } | |
2056 | else { | |
2057 | if (strchr(PL_tokenbuf,':')) | |
2058 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 2059 | |
77ca0c92 LW |
2060 | yylval.opval = newOP(OP_PADANY, 0); |
2061 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
2062 | return PRIVATEREF; | |
2063 | } | |
bbce6d69 | 2064 | } |
2065 | ||
02aa26ce NT |
2066 | /* |
2067 | build the ops for accesses to a my() variable. | |
2068 | ||
2069 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
2070 | then used in a comparison. This catches most, but not | |
2071 | all cases. For instance, it catches | |
2072 | sort { my($a); $a <=> $b } | |
2073 | but not | |
2074 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2075 | (although why you'd do that is anyone's guess). | |
2076 | */ | |
2077 | ||
3280af22 | 2078 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2079 | #ifdef USE_THREADS |
54b9620d | 2080 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2081 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2082 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2083 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2084 | { |
2faa37cc | 2085 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2086 | yylval.opval->op_targ = tmp; |
2087 | return PRIVATEREF; | |
2088 | } | |
2089 | #endif /* USE_THREADS */ | |
3280af22 | 2090 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2091 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2092 | /* might be an "our" variable" */ |
f472eb5c | 2093 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2094 | /* build ops for a bareword */ |
f472eb5c GS |
2095 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2096 | sv_catpvn(sym, "::", 2); | |
2097 | sv_catpv(sym, PL_tokenbuf+1); | |
2098 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2099 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2100 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2101 | (PL_in_eval |
f472eb5c GS |
2102 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2103 | : TRUE | |
77ca0c92 LW |
2104 | ), |
2105 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2106 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2107 | : SVt_PVHV)); | |
2108 | return WORD; | |
2109 | } | |
2110 | ||
02aa26ce | 2111 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2112 | if (PL_last_lop_op == OP_SORT && |
2113 | PL_tokenbuf[0] == '$' && | |
2114 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2115 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2116 | { |
3280af22 NIS |
2117 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2118 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2119 | d++) |
2120 | { | |
2121 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2122 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2123 | PL_tokenbuf); |
a863c7d1 | 2124 | } |
bbce6d69 | 2125 | } |
2126 | } | |
bbce6d69 | 2127 | |
a863c7d1 MB |
2128 | yylval.opval = newOP(OP_PADANY, 0); |
2129 | yylval.opval->op_targ = tmp; | |
2130 | return PRIVATEREF; | |
2131 | } | |
bbce6d69 | 2132 | } |
2133 | ||
02aa26ce NT |
2134 | /* |
2135 | Whine if they've said @foo in a doublequoted string, | |
2136 | and @foo isn't a variable we can find in the symbol | |
2137 | table. | |
2138 | */ | |
3280af22 NIS |
2139 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2140 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2141 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2142 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2143 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2144 | } |
2145 | ||
02aa26ce | 2146 | /* build ops for a bareword */ |
3280af22 | 2147 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2148 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2149 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2150 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2151 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2152 | : SVt_PVHV)); |
2153 | return WORD; | |
2154 | } | |
2155 | ||
02aa26ce NT |
2156 | /* no identifier pending identification */ |
2157 | ||
3280af22 | 2158 | switch (PL_lex_state) { |
79072805 LW |
2159 | #ifdef COMMENTARY |
2160 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2161 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2162 | break; | |
2163 | #endif | |
2164 | ||
09bef843 | 2165 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2166 | case LEX_KNOWNEXT: |
3280af22 NIS |
2167 | PL_nexttoke--; |
2168 | yylval = PL_nextval[PL_nexttoke]; | |
2169 | if (!PL_nexttoke) { | |
2170 | PL_lex_state = PL_lex_defer; | |
2171 | PL_expect = PL_lex_expect; | |
2172 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2173 | } |
3280af22 | 2174 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2175 | |
02aa26ce | 2176 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2177 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2178 | */ |
79072805 LW |
2179 | case LEX_INTERPCASEMOD: |
2180 | #ifdef DEBUGGING | |
3280af22 | 2181 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2182 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2183 | #endif |
02aa26ce | 2184 | /* handle \E or end of string */ |
3280af22 | 2185 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2186 | char oldmod; |
02aa26ce NT |
2187 | |
2188 | /* if at a \E */ | |
3280af22 NIS |
2189 | if (PL_lex_casemods) { |
2190 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2191 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2192 | |
3280af22 NIS |
2193 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2194 | PL_bufptr += 2; | |
2195 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2196 | } |
79072805 LW |
2197 | return ')'; |
2198 | } | |
3280af22 NIS |
2199 | if (PL_bufptr != PL_bufend) |
2200 | PL_bufptr += 2; | |
2201 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2202 | return yylex(); |
79072805 LW |
2203 | } |
2204 | else { | |
3280af22 | 2205 | s = PL_bufptr + 1; |
79072805 LW |
2206 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2207 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2208 | if (strchr("LU", *s) && |
3280af22 | 2209 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2210 | { |
3280af22 | 2211 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2212 | return ')'; |
2213 | } | |
3280af22 NIS |
2214 | if (PL_lex_casemods > 10) { |
2215 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2216 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2217 | SAVEFREEPV(newlb); |
3280af22 | 2218 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2219 | } |
2220 | } | |
3280af22 NIS |
2221 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2222 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2223 | PL_lex_state = LEX_INTERPCONCAT; | |
2224 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2225 | force_next('('); |
2226 | if (*s == 'l') | |
3280af22 | 2227 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2228 | else if (*s == 'u') |
3280af22 | 2229 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2230 | else if (*s == 'L') |
3280af22 | 2231 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2232 | else if (*s == 'U') |
3280af22 | 2233 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2234 | else if (*s == 'Q') |
3280af22 | 2235 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2236 | else |
cea2e8a9 | 2237 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2238 | PL_bufptr = s + 1; |
79072805 | 2239 | force_next(FUNC); |
3280af22 NIS |
2240 | if (PL_lex_starts) { |
2241 | s = PL_bufptr; | |
2242 | PL_lex_starts = 0; | |
79072805 LW |
2243 | Aop(OP_CONCAT); |
2244 | } | |
2245 | else | |
cea2e8a9 | 2246 | return yylex(); |
79072805 LW |
2247 | } |
2248 | ||
55497cff | 2249 | case LEX_INTERPPUSH: |
2250 | return sublex_push(); | |
2251 | ||
79072805 | 2252 | case LEX_INTERPSTART: |
3280af22 | 2253 | if (PL_bufptr == PL_bufend) |
79072805 | 2254 | return sublex_done(); |
3280af22 NIS |
2255 | PL_expect = XTERM; |
2256 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2257 | PL_lex_state = LEX_INTERPNORMAL; | |
2258 | if (PL_lex_dojoin) { | |
2259 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2260 | force_next(','); |
554b3eca | 2261 | #ifdef USE_THREADS |
533c011a NIS |
2262 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2263 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2264 | force_next(PRIVATEREF); |
2265 | #else | |
a0d0e21e | 2266 | force_ident("\"", '$'); |
554b3eca | 2267 | #endif /* USE_THREADS */ |
3280af22 | 2268 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2269 | force_next('$'); |
3280af22 | 2270 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2271 | force_next('('); |
3280af22 | 2272 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2273 | force_next(FUNC); |
2274 | } | |
3280af22 NIS |
2275 | if (PL_lex_starts++) { |
2276 | s = PL_bufptr; | |
79072805 LW |
2277 | Aop(OP_CONCAT); |
2278 | } | |
cea2e8a9 | 2279 | return yylex(); |
79072805 LW |
2280 | |
2281 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2282 | if (intuit_more(PL_bufptr)) { |
2283 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2284 | break; |
2285 | } | |
2286 | /* FALL THROUGH */ | |
2287 | ||
2288 | case LEX_INTERPEND: | |
3280af22 NIS |
2289 | if (PL_lex_dojoin) { |
2290 | PL_lex_dojoin = FALSE; | |
2291 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2292 | return ')'; |
2293 | } | |
43a16006 | 2294 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2295 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2296 | { |
e9fa98b2 | 2297 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2298 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2299 | PL_lex_repl = Nullsv; |
2300 | } | |
79072805 LW |
2301 | /* FALLTHROUGH */ |
2302 | case LEX_INTERPCONCAT: | |
2303 | #ifdef DEBUGGING | |
3280af22 | 2304 | if (PL_lex_brackets) |
cea2e8a9 | 2305 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2306 | #endif |
3280af22 | 2307 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2308 | return sublex_done(); |
2309 | ||
3280af22 NIS |
2310 | if (SvIVX(PL_linestr) == '\'') { |
2311 | SV *sv = newSVsv(PL_linestr); | |
2312 | if (!PL_lex_inpat) | |
76e3520e | 2313 | sv = tokeq(sv); |
3280af22 | 2314 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2315 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2316 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2317 | s = PL_bufend; |
79072805 LW |
2318 | } |
2319 | else { | |
3280af22 | 2320 | s = scan_const(PL_bufptr); |
79072805 | 2321 | if (*s == '\\') |
3280af22 | 2322 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2323 | else |
3280af22 | 2324 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2325 | } |
2326 | ||
3280af22 NIS |
2327 | if (s != PL_bufptr) { |
2328 | PL_nextval[PL_nexttoke] = yylval; | |
2329 | PL_expect = XTERM; | |
79072805 | 2330 | force_next(THING); |
3280af22 | 2331 | if (PL_lex_starts++) |
79072805 LW |
2332 | Aop(OP_CONCAT); |
2333 | else { | |
3280af22 | 2334 | PL_bufptr = s; |
cea2e8a9 | 2335 | return yylex(); |
79072805 LW |
2336 | } |
2337 | } | |
2338 | ||
cea2e8a9 | 2339 | return yylex(); |
a0d0e21e | 2340 | case LEX_FORMLINE: |
3280af22 NIS |
2341 | PL_lex_state = LEX_NORMAL; |
2342 | s = scan_formline(PL_bufptr); | |
2343 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2344 | goto rightbracket; |
2345 | OPERATOR(';'); | |
79072805 LW |
2346 | } |
2347 | ||
3280af22 NIS |
2348 | s = PL_bufptr; |
2349 | PL_oldoldbufptr = PL_oldbufptr; | |
2350 | PL_oldbufptr = s; | |
79072805 | 2351 | DEBUG_p( { |
bf49b057 GS |
2352 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2353 | exp_name[PL_expect], s); | |
79072805 | 2354 | } ) |
463ee0b2 LW |
2355 | |
2356 | retry: | |
378cc40b LW |
2357 | switch (*s) { |
2358 | default: | |
7e2040f0 | 2359 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2360 | goto keylookup; |
cea2e8a9 | 2361 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2362 | case 4: |
2363 | case 26: | |
2364 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2365 | case 0: |
3280af22 NIS |
2366 | if (!PL_rsfp) { |
2367 | PL_last_uni = 0; | |
2368 | PL_last_lop = 0; | |
2369 | if (PL_lex_brackets) | |
d98d5fff | 2370 | yyerror("Missing right curly or square bracket"); |
79072805 | 2371 | TOKEN(0); |
463ee0b2 | 2372 | } |
3280af22 | 2373 | if (s++ < PL_bufend) |
a687059c | 2374 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2375 | PL_last_uni = 0; |
2376 | PL_last_lop = 0; | |
2377 | if (!PL_in_eval && !PL_preambled) { | |
2378 | PL_preambled = TRUE; | |
2379 | sv_setpv(PL_linestr,incl_perldb()); | |
2380 | if (SvCUR(PL_linestr)) | |
2381 | sv_catpv(PL_linestr,";"); | |
2382 | if (PL_preambleav){ | |
2383 | while(AvFILLp(PL_preambleav) >= 0) { | |
2384 | SV *tmpsv = av_shift(PL_preambleav); | |
2385 | sv_catsv(PL_linestr, tmpsv); | |
2386 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2387 | sv_free(tmpsv); |
2388 | } | |
3280af22 NIS |
2389 | sv_free((SV*)PL_preambleav); |
2390 | PL_preambleav = NULL; | |
91b7def8 | 2391 | } |
3280af22 NIS |
2392 | if (PL_minus_n || PL_minus_p) { |
2393 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2394 | if (PL_minus_l) | |
2395 | sv_catpv(PL_linestr,"chomp;"); | |
2396 | if (PL_minus_a) { | |
8fd239a7 CS |
2397 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2398 | if (gv) | |
2399 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2400 | if (PL_minus_F) { |
2401 | if (strchr("/'\"", *PL_splitstr) | |
2402 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2403 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2404 | else { |
2405 | char delim; | |
2406 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2407 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2408 | delim = *s; |
cea2e8a9 | 2409 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2410 | "q" + (delim == '\''), delim); |
3280af22 | 2411 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2412 | if (*s == '\\') |
3280af22 NIS |
2413 | sv_catpvn(PL_linestr, "\\", 1); |
2414 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2415 | } |
cea2e8a9 | 2416 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2417 | } |
2304df62 AD |
2418 | } |
2419 | else | |
3280af22 | 2420 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2421 | } |
79072805 | 2422 | } |
3280af22 NIS |
2423 | sv_catpv(PL_linestr, "\n"); |
2424 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2425 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2426 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2427 | SV *sv = NEWSV(85,0); |
2428 | ||
2429 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2430 | sv_setsv(sv,PL_linestr); |
57843af0 | 2431 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2432 | } |
79072805 | 2433 | goto retry; |
a687059c | 2434 | } |
e929a76b | 2435 | do { |
3280af22 | 2436 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2437 | fake_eof: |
3280af22 NIS |
2438 | if (PL_rsfp) { |
2439 | if (PL_preprocess && !PL_in_eval) | |
2440 | (void)PerlProc_pclose(PL_rsfp); | |
2441 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2442 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2443 | else |
3280af22 NIS |
2444 | (void)PerlIO_close(PL_rsfp); |
2445 | PL_rsfp = Nullfp; | |
4a9ae47a | 2446 | PL_doextract = FALSE; |
395c3793 | 2447 | } |
3280af22 NIS |
2448 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2449 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2450 | sv_catpv(PL_linestr,";}"); | |
2451 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2452 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2453 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2454 | goto retry; |
2455 | } | |
3280af22 NIS |
2456 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2457 | sv_setpv(PL_linestr,""); | |
79072805 | 2458 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2459 | } |
3280af22 | 2460 | if (PL_doextract) { |
a0d0e21e | 2461 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2462 | PL_doextract = FALSE; |
a0d0e21e LW |
2463 | |
2464 | /* Incest with pod. */ | |
2465 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2466 | sv_setpv(PL_linestr, ""); |
2467 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2468 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2469 | PL_doextract = FALSE; | |
a0d0e21e LW |
2470 | } |
2471 | } | |
463ee0b2 | 2472 | incline(s); |
3280af22 NIS |
2473 | } while (PL_doextract); |
2474 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2475 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2476 | SV *sv = NEWSV(85,0); |
a687059c | 2477 | |
93a17b20 | 2478 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2479 | sv_setsv(sv,PL_linestr); |
57843af0 | 2480 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2481 | } |
3280af22 | 2482 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2483 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2484 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2485 | s++; |
a0d0e21e | 2486 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2487 | s++; |
44a8e56a | 2488 | d = Nullch; |
3280af22 | 2489 | if (!PL_in_eval) { |
44a8e56a | 2490 | if (*s == '#' && *(s+1) == '!') |
2491 | d = s + 2; | |
2492 | #ifdef ALTERNATE_SHEBANG | |
2493 | else { | |
2494 | static char as[] = ALTERNATE_SHEBANG; | |
2495 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2496 | d = s + (sizeof(as) - 1); | |
2497 | } | |
2498 | #endif /* ALTERNATE_SHEBANG */ | |
2499 | } | |
2500 | if (d) { | |
b8378b72 | 2501 | char *ipath; |
774d564b | 2502 | char *ipathend; |
b8378b72 | 2503 | |
774d564b | 2504 | while (isSPACE(*d)) |
b8378b72 CS |
2505 | d++; |
2506 | ipath = d; | |
774d564b | 2507 | while (*d && !isSPACE(*d)) |
2508 | d++; | |
2509 | ipathend = d; | |
2510 | ||
2511 | #ifdef ARG_ZERO_IS_SCRIPT | |
2512 | if (ipathend > ipath) { | |
2513 | /* | |
2514 | * HP-UX (at least) sets argv[0] to the script name, | |
2515 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2516 | * at least, set argv[0] to the basename of the Perl | |
2517 | * interpreter. So, having found "#!", we'll set it right. | |
2518 | */ | |
2519 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2520 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2521 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2522 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2523 | SvSETMAGIC(x); |
2524 | } | |
774d564b | 2525 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2526 | } |
774d564b | 2527 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2528 | |
2529 | /* | |
2530 | * Look for options. | |
2531 | */ | |
748a9306 | 2532 | d = instr(s,"perl -"); |
84e30d1a | 2533 | if (!d) { |
748a9306 | 2534 | d = instr(s,"perl"); |
84e30d1a GS |
2535 | #if defined(DOSISH) |
2536 | /* avoid getting into infinite loops when shebang | |
2537 | * line contains "Perl" rather than "perl" */ | |
2538 | if (!d) { | |
2539 | for (d = ipathend-4; d >= ipath; --d) { | |
2540 | if ((*d == 'p' || *d == 'P') | |
2541 | && !ibcmp(d, "perl", 4)) | |
2542 | { | |
2543 | break; | |
2544 | } | |
2545 | } | |
2546 | if (d < ipath) | |
2547 | d = Nullch; | |
2548 | } | |
2549 | #endif | |
2550 | } | |
44a8e56a | 2551 | #ifdef ALTERNATE_SHEBANG |
2552 | /* | |
2553 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2554 | * character that can be part of a Perl expression, then if | |
2555 | * we see it but not "perl", we're probably looking at the | |
2556 | * start of Perl code, not a request to hand off to some | |
2557 | * other interpreter. Similarly, if "perl" is there, but | |
2558 | * not in the first 'word' of the line, we assume the line | |
2559 | * contains the start of the Perl program. | |
44a8e56a | 2560 | */ |
2561 | if (d && *s != '#') { | |
774d564b | 2562 | char *c = ipath; |
44a8e56a | 2563 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2564 | c++; | |
2565 | if (c < d) | |
2566 | d = Nullch; /* "perl" not in first word; ignore */ | |
2567 | else | |
2568 | *s = '#'; /* Don't try to parse shebang line */ | |
2569 | } | |
774d564b | 2570 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2571 | if (!d && |
44a8e56a | 2572 | *s == '#' && |
774d564b | 2573 | ipathend > ipath && |
3280af22 | 2574 | !PL_minus_c && |
748a9306 | 2575 | !instr(s,"indir") && |
3280af22 | 2576 | instr(PL_origargv[0],"perl")) |
748a9306 | 2577 | { |
9f68db38 | 2578 | char **newargv; |
9f68db38 | 2579 | |
774d564b | 2580 | *ipathend = '\0'; |
2581 | s = ipathend + 1; | |
3280af22 | 2582 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2583 | s++; |
3280af22 NIS |
2584 | if (s < PL_bufend) { |
2585 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2586 | newargv[1] = s; |
3280af22 | 2587 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2588 | s++; |
2589 | *s = '\0'; | |
3280af22 | 2590 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2591 | } |
2592 | else | |
3280af22 | 2593 | newargv = PL_origargv; |
774d564b | 2594 | newargv[0] = ipath; |
80252599 | 2595 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2596 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2597 | } |
748a9306 | 2598 | if (d) { |
3280af22 NIS |
2599 | U32 oldpdb = PL_perldb; |
2600 | bool oldn = PL_minus_n; | |
2601 | bool oldp = PL_minus_p; | |
748a9306 LW |
2602 | |
2603 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2604 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2605 | |
2606 | if (*d++ == '-') { | |
8cc95fdb | 2607 | do { |
2608 | if (*d == 'M' || *d == 'm') { | |
2609 | char *m = d; | |
2610 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2611 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2612 | (int)(d - m), m); |
2613 | } | |
2614 | d = moreswitches(d); | |
2615 | } while (d); | |
84902520 | 2616 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2617 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2618 | /* if we have already added "LINE: while (<>) {", |
2619 | we must not do it again */ | |
748a9306 | 2620 | { |
3280af22 NIS |
2621 | sv_setpv(PL_linestr, ""); |
2622 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2623 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2624 | PL_preambled = FALSE; | |
84902520 | 2625 | if (PERLDB_LINE) |
3280af22 | 2626 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2627 | goto retry; |
2628 | } | |
a0d0e21e | 2629 | } |
79072805 | 2630 | } |
9f68db38 | 2631 | } |
79072805 | 2632 | } |
3280af22 NIS |
2633 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2634 | PL_bufptr = s; | |
2635 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2636 | return yylex(); |
ae986130 | 2637 | } |
378cc40b | 2638 | goto retry; |
4fdae800 | 2639 | case '\r': |
6a27c188 | 2640 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2641 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2642 | Perl_croak(aTHX_ | |
54310121 | 2643 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2644 | #endif |
4fdae800 | 2645 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2646 | s++; |
2647 | goto retry; | |
378cc40b | 2648 | case '#': |
e929a76b | 2649 | case '\n': |
3280af22 NIS |
2650 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2651 | d = PL_bufend; | |
a687059c | 2652 | while (s < d && *s != '\n') |
378cc40b | 2653 | s++; |
0f85fab0 | 2654 | if (s < d) |
378cc40b | 2655 | s++; |
463ee0b2 | 2656 | incline(s); |
3280af22 NIS |
2657 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2658 | PL_bufptr = s; | |
2659 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2660 | return yylex(); |
a687059c | 2661 | } |
378cc40b | 2662 | } |
a687059c | 2663 | else { |
378cc40b | 2664 | *s = '\0'; |
3280af22 | 2665 | PL_bufend = s; |
a687059c | 2666 | } |
378cc40b LW |
2667 | goto retry; |
2668 | case '-': | |
79072805 | 2669 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2670 | s++; |
3280af22 | 2671 | PL_bufptr = s; |
748a9306 LW |
2672 | tmp = *s++; |
2673 | ||
3280af22 | 2674 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2675 | s++; |
2676 | ||
2677 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2678 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2679 | OPERATOR('-'); /* unary minus */ |
2680 | } | |
3280af22 NIS |
2681 | PL_last_uni = PL_oldbufptr; |
2682 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2683 | switch (tmp) { |
79072805 LW |
2684 | case 'r': FTST(OP_FTEREAD); |
2685 | case 'w': FTST(OP_FTEWRITE); | |
2686 | case 'x': FTST(OP_FTEEXEC); | |
2687 | case 'o': FTST(OP_FTEOWNED); | |
2688 | case 'R': FTST(OP_FTRREAD); | |
2689 | case 'W': FTST(OP_FTRWRITE); | |
2690 | case 'X': FTST(OP_FTREXEC); | |
2691 | case 'O': FTST(OP_FTROWNED); | |
2692 | case 'e': FTST(OP_FTIS); | |
2693 | case 'z': FTST(OP_FTZERO); | |
2694 | case 's': FTST(OP_FTSIZE); | |
2695 | case 'f': FTST(OP_FTFILE); | |
2696 | case 'd': FTST(OP_FTDIR); | |
2697 | case 'l': FTST(OP_FTLINK); | |
2698 | case 'p': FTST(OP_FTPIPE); | |
2699 | case 'S': FTST(OP_FTSOCK); | |
2700 | case 'u': FTST(OP_FTSUID); | |
2701 | case 'g': FTST(OP_FTSGID); | |
2702 | case 'k': FTST(OP_FTSVTX); | |
2703 | case 'b': FTST(OP_FTBLK); | |
2704 | case 'c': FTST(OP_FTCHR); | |
2705 | case 't': FTST(OP_FTTTY); | |
2706 | case 'T': FTST(OP_FTTEXT); | |
2707 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2708 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2709 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2710 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2711 | default: |
cea2e8a9 | 2712 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2713 | break; |
2714 | } | |
2715 | } | |
a687059c LW |
2716 | tmp = *s++; |
2717 | if (*s == tmp) { | |
2718 | s++; | |
3280af22 | 2719 | if (PL_expect == XOPERATOR) |
79072805 LW |
2720 | TERM(POSTDEC); |
2721 | else | |
2722 | OPERATOR(PREDEC); | |
2723 | } | |
2724 | else if (*s == '>') { | |
2725 | s++; | |
2726 | s = skipspace(s); | |
7e2040f0 | 2727 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2728 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2729 | TOKEN(ARROW); |
79072805 | 2730 | } |
748a9306 LW |
2731 | else if (*s == '$') |
2732 | OPERATOR(ARROW); | |
463ee0b2 | 2733 | else |
748a9306 | 2734 | TERM(ARROW); |
a687059c | 2735 | } |
3280af22 | 2736 | if (PL_expect == XOPERATOR) |
79072805 LW |
2737 | Aop(OP_SUBTRACT); |
2738 | else { | |
3280af22 | 2739 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2740 | check_uni(); |
79072805 | 2741 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2742 | } |
79072805 | 2743 | |
378cc40b | 2744 | case '+': |
a687059c LW |
2745 | tmp = *s++; |
2746 | if (*s == tmp) { | |
378cc40b | 2747 | s++; |
3280af22 | 2748 | if (PL_expect == XOPERATOR) |
79072805 LW |
2749 | TERM(POSTINC); |
2750 | else | |
2751 | OPERATOR(PREINC); | |
378cc40b | 2752 | } |
3280af22 | 2753 | if (PL_expect == XOPERATOR) |
79072805 LW |
2754 | Aop(OP_ADD); |
2755 | else { | |
3280af22 | 2756 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2757 | check_uni(); |
a687059c | 2758 | OPERATOR('+'); |
2f3197b3 | 2759 | } |
a687059c | 2760 | |
378cc40b | 2761 | case '*': |
3280af22 NIS |
2762 | if (PL_expect != XOPERATOR) { |
2763 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2764 | PL_expect = XOPERATOR; | |
2765 | force_ident(PL_tokenbuf, '*'); | |
2766 | if (!*PL_tokenbuf) | |
a0d0e21e | 2767 | PREREF('*'); |
79072805 | 2768 | TERM('*'); |
a687059c | 2769 | } |
79072805 LW |
2770 | s++; |
2771 | if (*s == '*') { | |
a687059c | 2772 | s++; |
79072805 | 2773 | PWop(OP_POW); |
a687059c | 2774 | } |
79072805 LW |
2775 | Mop(OP_MULTIPLY); |
2776 | ||
378cc40b | 2777 | case '%': |
3280af22 | 2778 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2779 | ++s; |
2780 | Mop(OP_MODULO); | |
a687059c | 2781 | } |
3280af22 NIS |
2782 | PL_tokenbuf[0] = '%'; |
2783 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2784 | if (!PL_tokenbuf[1]) { | |
2785 | if (s == PL_bufend) | |
bbce6d69 | 2786 | yyerror("Final % should be \\% or %name"); |
2787 | PREREF('%'); | |
a687059c | 2788 | } |
3280af22 | 2789 | PL_pending_ident = '%'; |
bbce6d69 | 2790 | TERM('%'); |
a687059c | 2791 | |
378cc40b | 2792 | case '^': |
79072805 | 2793 | s++; |
a0d0e21e | 2794 | BOop(OP_BIT_XOR); |
79072805 | 2795 | case '[': |
3280af22 | 2796 | PL_lex_brackets++; |
79072805 | 2797 | /* FALL THROUGH */ |
378cc40b | 2798 | case '~': |
378cc40b | 2799 | case ',': |
378cc40b LW |
2800 | tmp = *s++; |
2801 | OPERATOR(tmp); | |
a0d0e21e LW |
2802 | case ':': |
2803 | if (s[1] == ':') { | |
2804 | len = 0; | |
2805 | goto just_a_word; | |
2806 | } | |
2807 | s++; | |
09bef843 SB |
2808 | switch (PL_expect) { |
2809 | OP *attrs; | |
2810 | case XOPERATOR: | |
2811 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2812 | break; | |
2813 | PL_bufptr = s; /* update in case we back off */ | |
2814 | goto grabattrs; | |
2815 | case XATTRBLOCK: | |
2816 | PL_expect = XBLOCK; | |
2817 | goto grabattrs; | |
2818 | case XATTRTERM: | |
2819 | PL_expect = XTERMBLOCK; | |
2820 | grabattrs: | |
2821 | s = skipspace(s); | |
2822 | attrs = Nullop; | |
7e2040f0 | 2823 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2824 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2825 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2826 | if (tmp < 0) tmp = -tmp; | |
2827 | switch (tmp) { | |
2828 | case KEY_or: | |
2829 | case KEY_and: | |
2830 | case KEY_for: | |
2831 | case KEY_unless: | |
2832 | case KEY_if: | |
2833 | case KEY_while: | |
2834 | case KEY_until: | |
2835 | goto got_attrs; | |
2836 | default: | |
2837 | break; | |
2838 | } | |
2839 | } | |
09bef843 SB |
2840 | if (*d == '(') { |
2841 | d = scan_str(d,TRUE,TRUE); | |
2842 | if (!d) { | |
2843 | if (PL_lex_stuff) { | |
2844 | SvREFCNT_dec(PL_lex_stuff); | |
2845 | PL_lex_stuff = Nullsv; | |
2846 | } | |
2847 | /* MUST advance bufptr here to avoid bogus | |
2848 | "at end of line" context messages from yyerror(). | |
2849 | */ | |
2850 | PL_bufptr = s + len; | |
2851 | yyerror("Unterminated attribute parameter in attribute list"); | |
2852 | if (attrs) | |
2853 | op_free(attrs); | |
2854 | return 0; /* EOF indicator */ | |
2855 | } | |
2856 | } | |
2857 | if (PL_lex_stuff) { | |
2858 | SV *sv = newSVpvn(s, len); | |
2859 | sv_catsv(sv, PL_lex_stuff); | |
2860 | attrs = append_elem(OP_LIST, attrs, | |
2861 | newSVOP(OP_CONST, 0, sv)); | |
2862 | SvREFCNT_dec(PL_lex_stuff); | |
2863 | PL_lex_stuff = Nullsv; | |
2864 | } | |
2865 | else { | |
2866 | attrs = append_elem(OP_LIST, attrs, | |
2867 | newSVOP(OP_CONST, 0, | |
2868 | newSVpvn(s, len))); | |
2869 | } | |
2870 | s = skipspace(d); | |
0120eecf | 2871 | if (*s == ':' && s[1] != ':') |
09bef843 | 2872 | s = skipspace(s+1); |
0120eecf GS |
2873 | else if (s == d) |
2874 | break; /* require real whitespace or :'s */ | |
09bef843 | 2875 | } |
f9829d6b GS |
2876 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
2877 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
2878 | char q = ((*s == '\'') ? '"' : '\''); |
2879 | /* If here for an expression, and parsed no attrs, back off. */ | |
2880 | if (tmp == '=' && !attrs) { | |
2881 | s = PL_bufptr; | |
2882 | break; | |
2883 | } | |
2884 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2885 | context messages from yyerror(). | |
2886 | */ | |
2887 | PL_bufptr = s; | |
2888 | if (!*s) | |
2889 | yyerror("Unterminated attribute list"); | |
2890 | else | |
2891 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2892 | q, *s, q)); | |
2893 | if (attrs) | |
2894 | op_free(attrs); | |
2895 | OPERATOR(':'); | |
2896 | } | |
f9829d6b | 2897 | got_attrs: |
09bef843 SB |
2898 | if (attrs) { |
2899 | PL_nextval[PL_nexttoke].opval = attrs; | |
2900 | force_next(THING); | |
2901 | } | |
2902 | TOKEN(COLONATTR); | |
2903 | } | |
a0d0e21e | 2904 | OPERATOR(':'); |
8990e307 LW |
2905 | case '(': |
2906 | s++; | |
3280af22 NIS |
2907 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2908 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2909 | else |
3280af22 | 2910 | PL_expect = XTERM; |
a0d0e21e | 2911 | TOKEN('('); |
378cc40b | 2912 | case ';': |
57843af0 GS |
2913 | if (CopLINE(PL_curcop) < PL_copline) |
2914 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2915 | tmp = *s++; |
2916 | OPERATOR(tmp); | |
2917 | case ')': | |
378cc40b | 2918 | tmp = *s++; |
16d20bd9 AD |
2919 | s = skipspace(s); |
2920 | if (*s == '{') | |
2921 | PREBLOCK(tmp); | |
378cc40b | 2922 | TERM(tmp); |
79072805 LW |
2923 | case ']': |
2924 | s++; | |
3280af22 | 2925 | if (PL_lex_brackets <= 0) |
d98d5fff | 2926 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2927 | else |
3280af22 NIS |
2928 | --PL_lex_brackets; |
2929 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2930 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2931 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2932 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2933 | } |
2934 | } | |
4633a7c4 | 2935 | TERM(']'); |
79072805 LW |
2936 | case '{': |
2937 | leftbracket: | |
79072805 | 2938 | s++; |
3280af22 NIS |
2939 | if (PL_lex_brackets > 100) { |
2940 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2941 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2942 | SAVEFREEPV(newlb); |
3280af22 | 2943 | PL_lex_brackstack = newlb; |
8990e307 LW |
2944 | } |
2945 | } | |
3280af22 | 2946 | switch (PL_expect) { |
a0d0e21e | 2947 | case XTERM: |
3280af22 | 2948 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2949 | s--; |
2950 | PRETERMBLOCK(DO); | |
2951 | } | |
3280af22 NIS |
2952 | if (PL_oldoldbufptr == PL_last_lop) |
2953 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2954 | else |
3280af22 | 2955 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2956 | OPERATOR(HASHBRACK); |
a0d0e21e | 2957 | case XOPERATOR: |
3280af22 | 2958 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2959 | s++; |
44a8e56a | 2960 | d = s; |
3280af22 NIS |
2961 | PL_tokenbuf[0] = '\0'; |
2962 | if (d < PL_bufend && *d == '-') { | |
2963 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2964 | d++; |
3280af22 | 2965 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2966 | d++; |
2967 | } | |
7e2040f0 | 2968 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 2969 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2970 | FALSE, &len); |
3280af22 | 2971 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2972 | d++; |
2973 | if (*d == '}') { | |
3280af22 | 2974 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2975 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2976 | if (minus) | |
2977 | force_next('-'); | |
748a9306 LW |
2978 | } |
2979 | } | |
2980 | /* FALL THROUGH */ | |
09bef843 | 2981 | case XATTRBLOCK: |
748a9306 | 2982 | case XBLOCK: |
3280af22 NIS |
2983 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2984 | PL_expect = XSTATE; | |
a0d0e21e | 2985 | break; |
09bef843 | 2986 | case XATTRTERM: |
a0d0e21e | 2987 | case XTERMBLOCK: |
3280af22 NIS |
2988 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2989 | PL_expect = XSTATE; | |
a0d0e21e LW |
2990 | break; |
2991 | default: { | |
2992 | char *t; | |
3280af22 NIS |
2993 | if (PL_oldoldbufptr == PL_last_lop) |
2994 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2995 | else |
3280af22 | 2996 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2997 | s = skipspace(s); |
09ecc4b6 | 2998 | if (*s == '}') |
a0d0e21e | 2999 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
3000 | /* This hack serves to disambiguate a pair of curlies |
3001 | * as being a block or an anon hash. Normally, expectation | |
3002 | * determines that, but in cases where we're not in a | |
3003 | * position to expect anything in particular (like inside | |
3004 | * eval"") we have to resolve the ambiguity. This code | |
3005 | * covers the case where the first term in the curlies is a | |
3006 | * quoted string. Most other cases need to be explicitly | |
3007 | * disambiguated by prepending a `+' before the opening | |
3008 | * curly in order to force resolution as an anon hash. | |
3009 | * | |
3010 | * XXX should probably propagate the outer expectation | |
3011 | * into eval"" to rely less on this hack, but that could | |
3012 | * potentially break current behavior of eval"". | |
3013 | * GSAR 97-07-21 | |
3014 | */ | |
3015 | t = s; | |
3016 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3017 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3018 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3019 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3020 | t++; | |
3021 | t++; | |
a0d0e21e | 3022 | } |
b8a4b1be | 3023 | else if (*s == 'q') { |
3280af22 | 3024 | if (++t < PL_bufend |
b8a4b1be | 3025 | && (!isALNUM(*t) |
3280af22 | 3026 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3027 | && !isALNUM(*t)))) |
3028 | { | |
b8a4b1be GS |
3029 | char *tmps; |
3030 | char open, close, term; | |
3031 | I32 brackets = 1; | |
3032 | ||
3280af22 | 3033 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3034 | t++; |
3035 | term = *t; | |
3036 | open = term; | |
3037 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3038 | term = tmps[5]; | |
3039 | close = term; | |
3040 | if (open == close) | |
3280af22 NIS |
3041 | for (t++; t < PL_bufend; t++) { |
3042 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3043 | t++; |
6d07e5e9 | 3044 | else if (*t == open) |
b8a4b1be GS |
3045 | break; |
3046 | } | |
3047 | else | |
3280af22 NIS |
3048 | for (t++; t < PL_bufend; t++) { |
3049 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3050 | t++; |
6d07e5e9 | 3051 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3052 | break; |
3053 | else if (*t == open) | |
3054 | brackets++; | |
3055 | } | |
3056 | } | |
3057 | t++; | |
a0d0e21e | 3058 | } |
7e2040f0 | 3059 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3060 | t += UTF8SKIP(t); |
7e2040f0 | 3061 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3062 | t += UTF8SKIP(t); |
a0d0e21e | 3063 | } |
3280af22 | 3064 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3065 | t++; |
b8a4b1be GS |
3066 | /* if comma follows first term, call it an anon hash */ |
3067 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3068 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3069 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3070 | OPERATOR(HASHBRACK); |
3280af22 | 3071 | if (PL_expect == XREF) |
4e4e412b | 3072 | PL_expect = XTERM; |
a0d0e21e | 3073 | else { |
3280af22 NIS |
3074 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3075 | PL_expect = XSTATE; | |
a0d0e21e | 3076 | } |
8990e307 | 3077 | } |
a0d0e21e | 3078 | break; |
463ee0b2 | 3079 | } |
57843af0 | 3080 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3081 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3082 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3083 | TOKEN('{'); |
378cc40b | 3084 | case '}': |
79072805 LW |
3085 | rightbracket: |
3086 | s++; | |
3280af22 | 3087 | if (PL_lex_brackets <= 0) |
d98d5fff | 3088 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3089 | else |
3280af22 NIS |
3090 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
3091 | if (PL_lex_brackets < PL_lex_formbrack) | |
3092 | PL_lex_formbrack = 0; | |
3093 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3094 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3095 | if (PL_expect & XFAKEBRACK) { |
3096 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3097 | PL_lex_state = LEX_INTERPEND; |
3098 | PL_bufptr = s; | |
cea2e8a9 | 3099 | return yylex(); /* ignore fake brackets */ |
79072805 | 3100 | } |
fa83b5b6 | 3101 | if (*s == '-' && s[1] == '>') |
3280af22 | 3102 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3103 | else if (*s != '[' && *s != '{') |
3280af22 | 3104 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3105 | } |
3106 | } | |
9059aa12 LW |
3107 | if (PL_expect & XFAKEBRACK) { |
3108 | PL_expect &= XENUMMASK; | |
3280af22 | 3109 | PL_bufptr = s; |
cea2e8a9 | 3110 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3111 | } |
79072805 LW |
3112 | force_next('}'); |
3113 | TOKEN(';'); | |
378cc40b LW |
3114 | case '&': |
3115 | s++; | |
3116 | tmp = *s++; | |
3117 | if (tmp == '&') | |
a0d0e21e | 3118 | AOPERATOR(ANDAND); |
378cc40b | 3119 | s--; |
3280af22 | 3120 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3121 | if (ckWARN(WARN_SEMICOLON) |
3122 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3123 | { | |
57843af0 | 3124 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3125 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3126 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3127 | } |
79072805 | 3128 | BAop(OP_BIT_AND); |
463ee0b2 | 3129 | } |
79072805 | 3130 | |
3280af22 NIS |
3131 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3132 | if (*PL_tokenbuf) { | |
3133 | PL_expect = XOPERATOR; | |
3134 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3135 | } |
79072805 LW |
3136 | else |
3137 | PREREF('&'); | |
c07a80fd | 3138 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3139 | TERM('&'); |
3140 | ||
378cc40b LW |
3141 | case '|': |
3142 | s++; | |
3143 | tmp = *s++; | |
3144 | if (tmp == '|') | |
a0d0e21e | 3145 | AOPERATOR(OROR); |
378cc40b | 3146 | s--; |
79072805 | 3147 | BOop(OP_BIT_OR); |
378cc40b LW |
3148 | case '=': |
3149 | s++; | |
3150 | tmp = *s++; | |
3151 | if (tmp == '=') | |
79072805 LW |
3152 | Eop(OP_EQ); |
3153 | if (tmp == '>') | |
3154 | OPERATOR(','); | |
378cc40b | 3155 | if (tmp == '~') |
79072805 | 3156 | PMop(OP_MATCH); |
599cee73 | 3157 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3158 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3159 | s--; |
3280af22 NIS |
3160 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3161 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3162 | { |
3280af22 NIS |
3163 | if (PL_in_eval && !PL_rsfp) { |
3164 | d = PL_bufend; | |
a5f75d66 AD |
3165 | while (s < d) { |
3166 | if (*s++ == '\n') { | |
3167 | incline(s); | |
3168 | if (strnEQ(s,"=cut",4)) { | |
3169 | s = strchr(s,'\n'); | |
3170 | if (s) | |
3171 | s++; | |
3172 | else | |
3173 | s = d; | |
3174 | incline(s); | |
3175 | goto retry; | |
3176 | } | |
3177 | } | |
3178 | } | |
3179 | goto retry; | |
3180 | } | |
3280af22 NIS |
3181 | s = PL_bufend; |
3182 | PL_doextract = TRUE; | |
a0d0e21e LW |
3183 | goto retry; |
3184 | } | |
3280af22 | 3185 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3186 | char *t; |
51882d45 | 3187 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3188 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3189 | #else |
3190 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3191 | #endif | |
a0d0e21e LW |
3192 | if (*t == '\n' || *t == '#') { |
3193 | s--; | |
3280af22 | 3194 | PL_expect = XBLOCK; |
a0d0e21e LW |
3195 | goto leftbracket; |
3196 | } | |
79072805 | 3197 | } |
a0d0e21e LW |
3198 | yylval.ival = 0; |
3199 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3200 | case '!': |
3201 | s++; | |
3202 | tmp = *s++; | |
3203 | if (tmp == '=') | |
79072805 | 3204 | Eop(OP_NE); |
378cc40b | 3205 | if (tmp == '~') |
79072805 | 3206 | PMop(OP_NOT); |
378cc40b LW |
3207 | s--; |
3208 | OPERATOR('!'); | |
3209 | case '<': | |
3280af22 | 3210 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3211 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3212 | check_uni(); |
79072805 LW |
3213 | if (s[1] == '<') |
3214 | s = scan_heredoc(s); | |
3215 | else | |
3216 | s = scan_inputsymbol(s); | |
3217 | TERM(sublex_start()); | |
378cc40b LW |
3218 | } |
3219 | s++; | |
3220 | tmp = *s++; | |
3221 | if (tmp == '<') | |
79072805 | 3222 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3223 | if (tmp == '=') { |
3224 | tmp = *s++; | |
3225 | if (tmp == '>') | |
79072805 | 3226 | Eop(OP_NCMP); |
395c3793 | 3227 | s--; |
79072805 | 3228 | Rop(OP_LE); |
395c3793 | 3229 | } |
378cc40b | 3230 | s--; |
79072805 | 3231 | Rop(OP_LT); |
378cc40b LW |
3232 | case '>': |
3233 | s++; | |
3234 | tmp = *s++; | |
3235 | if (tmp == '>') | |
79072805 | 3236 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3237 | if (tmp == '=') |
79072805 | 3238 | Rop(OP_GE); |
378cc40b | 3239 | s--; |
79072805 | 3240 | Rop(OP_GT); |
378cc40b LW |
3241 | |
3242 | case '$': | |
bbce6d69 | 3243 | CLINE; |
3244 | ||
3280af22 NIS |
3245 | if (PL_expect == XOPERATOR) { |
3246 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3247 | PL_expect = XTERM; | |
a0d0e21e | 3248 | depcom(); |
bbce6d69 | 3249 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3250 | } |
8990e307 | 3251 | } |
a0d0e21e | 3252 | |
7e2040f0 | 3253 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3254 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3255 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3256 | sizeof PL_tokenbuf - 1, FALSE); | |
3257 | if (PL_expect == XOPERATOR) | |
3258 | no_op("Array length", s); | |
3280af22 | 3259 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3260 | PREREF(DOLSHARP); |
3280af22 NIS |
3261 | PL_expect = XOPERATOR; |
3262 | PL_pending_ident = '#'; | |
463ee0b2 | 3263 | TOKEN(DOLSHARP); |
79072805 | 3264 | } |
bbce6d69 | 3265 | |
3280af22 | 3266 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3267 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3268 | sizeof PL_tokenbuf - 1, FALSE); | |
3269 | if (PL_expect == XOPERATOR) | |
3270 | no_op("Scalar", s); | |
3280af22 NIS |
3271 | if (!PL_tokenbuf[1]) { |
3272 | if (s == PL_bufend) | |
bbce6d69 | 3273 | yyerror("Final $ should be \\$ or $name"); |
3274 | PREREF('$'); | |
8990e307 | 3275 | } |
a0d0e21e | 3276 | |
bbce6d69 | 3277 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3278 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3279 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3280 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3281 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3282 | TERM(THING); | |
3283 | } | |
3284 | ||
ff68c719 | 3285 | d = s; |
69d2bceb | 3286 | tmp = (I32)*s; |
3280af22 | 3287 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3288 | s = skipspace(s); |
3289 | ||
3280af22 | 3290 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3291 | char *t; |
3292 | if (*s == '[') { | |
3280af22 | 3293 | PL_tokenbuf[0] = '@'; |
599cee73 | 3294 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3295 | for(t = s + 1; |
7e2040f0 | 3296 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3297 | t++) ; |
a0d0e21e | 3298 | if (*t++ == ',') { |
3280af22 NIS |
3299 | PL_bufptr = skipspace(PL_bufptr); |
3300 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3301 | t++; |
cea2e8a9 | 3302 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3303 | "Multidimensional syntax %.*s not supported", |
3304 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3305 | } |
3306 | } | |
bbce6d69 | 3307 | } |
3308 | else if (*s == '{') { | |
3280af22 | 3309 | PL_tokenbuf[0] = '%'; |
599cee73 | 3310 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3311 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3312 | { | |
3280af22 | 3313 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3314 | STRLEN len; |
3315 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3316 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3317 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3318 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3319 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3320 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3321 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3322 | } |
93a17b20 LW |
3323 | } |
3324 | } | |
2f3197b3 | 3325 | } |
bbce6d69 | 3326 | |
3280af22 | 3327 | PL_expect = XOPERATOR; |
69d2bceb | 3328 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3329 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3330 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3331 | PL_expect = XOPERATOR; | |
bbce6d69 | 3332 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3333 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3334 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3335 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3336 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3337 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3338 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
3339 | if (tmp = keyword(tmpbuf, len)) { |
3340 | /* binary operators exclude handle interpretations */ | |
3341 | switch (tmp) { | |
3342 | case -KEY_x: | |
3343 | case -KEY_eq: | |
3344 | case -KEY_ne: | |
3345 | case -KEY_gt: | |
3346 | case -KEY_lt: | |
3347 | case -KEY_ge: | |
3348 | case -KEY_le: | |
3349 | case -KEY_cmp: | |
3350 | break; | |
3351 | default: | |
3280af22 | 3352 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3353 | break; |
3354 | } | |
3355 | } | |
68dc0745 | 3356 | else { |
3357 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3358 | if (gv && GvCVu(gv)) | |
3280af22 | 3359 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3360 | } |
93a17b20 | 3361 | } |
bbce6d69 | 3362 | else if (isDIGIT(*s)) |
3280af22 | 3363 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3364 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3365 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3366 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3367 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3368 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3369 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3370 | } |
3280af22 | 3371 | PL_pending_ident = '$'; |
79072805 | 3372 | TOKEN('$'); |
378cc40b LW |
3373 | |
3374 | case '@': | |
3280af22 | 3375 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3376 | no_op("Array", s); |
3280af22 NIS |
3377 | PL_tokenbuf[0] = '@'; |
3378 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3379 | if (!PL_tokenbuf[1]) { | |
3380 | if (s == PL_bufend) | |
bbce6d69 | 3381 | yyerror("Final @ should be \\@ or @name"); |
3382 | PREREF('@'); | |
3383 | } | |
3280af22 | 3384 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3385 | s = skipspace(s); |
3280af22 | 3386 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3387 | if (*s == '{') |
3280af22 | 3388 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3389 | |
3390 | /* Warn about @ where they meant $. */ | |
599cee73 | 3391 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3392 | if (*s == '[' || *s == '{') { |
3393 | char *t = s + 1; | |
7e2040f0 | 3394 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3395 | t++; |
3396 | if (*t == '}' || *t == ']') { | |
3397 | t++; | |
3280af22 | 3398 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3399 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3400 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3401 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3402 | } |
93a17b20 LW |
3403 | } |
3404 | } | |
463ee0b2 | 3405 | } |
3280af22 | 3406 | PL_pending_ident = '@'; |
79072805 | 3407 | TERM('@'); |
378cc40b LW |
3408 | |
3409 | case '/': /* may either be division or pattern */ | |
3410 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3411 | if (PL_expect != XOPERATOR) { |
c277df42 | 3412 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3413 | if (PL_oldoldbufptr == PL_last_uni |
3414 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3415 | || memNE(PL_last_uni, "study", 5) |
3416 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3417 | check_uni(); |
8782bef2 | 3418 | s = scan_pat(s,OP_MATCH); |
79072805 | 3419 | TERM(sublex_start()); |
378cc40b LW |
3420 | } |
3421 | tmp = *s++; | |
a687059c | 3422 | if (tmp == '/') |
79072805 | 3423 | Mop(OP_DIVIDE); |
378cc40b LW |
3424 | OPERATOR(tmp); |
3425 | ||
3426 | case '.': | |
51882d45 GS |
3427 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3428 | #ifdef PERL_STRICT_CR | |
3429 | && s[1] == '\n' | |
3430 | #else | |
3431 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3432 | #endif | |
3433 | && (s == PL_linestart || s[-1] == '\n') ) | |
3434 | { | |
3280af22 NIS |
3435 | PL_lex_formbrack = 0; |
3436 | PL_expect = XSTATE; | |
79072805 LW |
3437 | goto rightbracket; |
3438 | } | |
3280af22 | 3439 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3440 | tmp = *s++; |
a687059c LW |
3441 | if (*s == tmp) { |
3442 | s++; | |
2f3197b3 LW |
3443 | if (*s == tmp) { |
3444 | s++; | |
79072805 | 3445 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3446 | } |
3447 | else | |
79072805 | 3448 | yylval.ival = 0; |
378cc40b | 3449 | OPERATOR(DOTDOT); |
a687059c | 3450 | } |
3280af22 | 3451 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3452 | check_uni(); |
79072805 | 3453 | Aop(OP_CONCAT); |
378cc40b LW |
3454 | } |
3455 | /* FALL THROUGH */ | |
3456 | case '0': case '1': case '2': case '3': case '4': | |
3457 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3458 | s = scan_num(s); |
3280af22 | 3459 | if (PL_expect == XOPERATOR) |
8990e307 | 3460 | no_op("Number",s); |
79072805 LW |
3461 | TERM(THING); |
3462 | ||
3463 | case '\'': | |
09bef843 | 3464 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3465 | if (PL_expect == XOPERATOR) { |
3466 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3467 | PL_expect = XTERM; | |
a0d0e21e LW |
3468 | depcom(); |
3469 | return ','; /* grandfather non-comma-format format */ | |
3470 | } | |
463ee0b2 | 3471 | else |
8990e307 | 3472 | no_op("String",s); |
463ee0b2 | 3473 | } |
79072805 | 3474 | if (!s) |
85e6fe83 | 3475 | missingterm((char*)0); |
79072805 LW |
3476 | yylval.ival = OP_CONST; |
3477 | TERM(sublex_start()); | |
3478 | ||
3479 | case '"': | |
09bef843 | 3480 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3481 | if (PL_expect == XOPERATOR) { |
3482 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3483 | PL_expect = XTERM; | |
a0d0e21e LW |
3484 | depcom(); |
3485 | return ','; /* grandfather non-comma-format format */ | |
3486 | } | |
463ee0b2 | 3487 | else |
8990e307 | 3488 | no_op("String",s); |
463ee0b2 | 3489 | } |
79072805 | 3490 | if (!s) |
85e6fe83 | 3491 | missingterm((char*)0); |
4633a7c4 | 3492 | yylval.ival = OP_CONST; |
3280af22 | 3493 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3494 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3495 | yylval.ival = OP_STRINGIFY; |
3496 | break; | |
3497 | } | |
3498 | } | |
79072805 LW |
3499 | TERM(sublex_start()); |
3500 | ||
3501 | case '`': | |
09bef843 | 3502 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3503 | if (PL_expect == XOPERATOR) |
8990e307 | 3504 | no_op("Backticks",s); |
79072805 | 3505 | if (!s) |
85e6fe83 | 3506 | missingterm((char*)0); |
79072805 LW |
3507 | yylval.ival = OP_BACKTICK; |
3508 | set_csh(); | |
3509 | TERM(sublex_start()); | |
3510 | ||
3511 | case '\\': | |
3512 | s++; | |
599cee73 | 3513 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3514 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3515 | *s, *s); |
3280af22 | 3516 | if (PL_expect == XOPERATOR) |
8990e307 | 3517 | no_op("Backslash",s); |
79072805 LW |
3518 | OPERATOR(REFGEN); |
3519 | ||
a7cb1f99 | 3520 | case 'v': |
e526c9e6 | 3521 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3522 | char *start = s; |
3523 | start++; | |
3524 | start++; | |
dd629d5b | 3525 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3526 | start++; |
3527 | if (*start == '.' && isDIGIT(start[1])) { | |
3528 | s = scan_num(s); | |
3529 | TERM(THING); | |
3530 | } | |
e526c9e6 GS |
3531 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
3532 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF)) { | |
3533 | char c = *start; | |
3534 | GV *gv; | |
3535 | *start = '\0'; | |
3536 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3537 | *start = c; | |
3538 | if (!gv) { | |
3539 | s = scan_num(s); | |
3540 | TERM(THING); | |
3541 | } | |
3542 | } | |
a7cb1f99 GS |
3543 | } |
3544 | goto keylookup; | |
79072805 | 3545 | case 'x': |
3280af22 | 3546 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3547 | s++; |
3548 | Mop(OP_REPEAT); | |
2f3197b3 | 3549 | } |
79072805 LW |
3550 | goto keylookup; |
3551 | ||
378cc40b | 3552 | case '_': |
79072805 LW |
3553 | case 'a': case 'A': |
3554 | case 'b': case 'B': | |
3555 | case 'c': case 'C': | |
3556 | case 'd': case 'D': | |
3557 | case 'e': case 'E': | |
3558 | case 'f': case 'F': | |
3559 | case 'g': case 'G': | |
3560 | case 'h': case 'H': | |
3561 | case 'i': case 'I': | |
3562 | case 'j': case 'J': | |
3563 | case 'k': case 'K': | |
3564 | case 'l': case 'L': | |
3565 | case 'm': case 'M': | |
3566 | case 'n': case 'N': | |
3567 | case 'o': case 'O': | |
3568 | case 'p': case 'P': | |
3569 | case 'q': case 'Q': | |
3570 | case 'r': case 'R': | |
3571 | case 's': case 'S': | |
3572 | case 't': case 'T': | |
3573 | case 'u': case 'U': | |
a7cb1f99 | 3574 | case 'V': |
79072805 LW |
3575 | case 'w': case 'W': |
3576 | case 'X': | |
3577 | case 'y': case 'Y': | |
3578 | case 'z': case 'Z': | |
3579 | ||
49dc05e3 | 3580 | keylookup: { |
2d8e6c8d | 3581 | STRLEN n_a; |
161b471a NIS |
3582 | gv = Nullgv; |
3583 | gvp = 0; | |
49dc05e3 | 3584 | |
3280af22 NIS |
3585 | PL_bufptr = s; |
3586 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3587 | |
3588 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3589 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3590 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3591 | (PL_tokenbuf[0] == 'q' && | |
3592 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3593 | |
3594 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3595 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3596 | goto just_a_word; |
3597 | ||
3643fb5f | 3598 | d = s; |
3280af22 | 3599 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3600 | d++; /* no comments skipped here, or s### is misparsed */ |
3601 | ||
3602 | /* Is this a label? */ | |
3280af22 NIS |
3603 | if (!tmp && PL_expect == XSTATE |
3604 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3605 | s = d + 1; |
3280af22 | 3606 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3607 | CLINE; |
3608 | TOKEN(LABEL); | |
3643fb5f CS |
3609 | } |
3610 | ||
3611 | /* Check for keywords */ | |
3280af22 | 3612 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3613 | |
3614 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3615 | if (strnEQ(d,"=>",2)) { |
3616 | CLINE; | |
3280af22 | 3617 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3618 | yylval.opval->op_private = OPpCONST_BARE; |
3619 | TERM(WORD); | |
3620 | } | |
3621 | ||
a0d0e21e | 3622 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3623 | GV *ogv = Nullgv; /* override (winner) */ |
3624 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3625 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3626 | CV *cv; |
3280af22 | 3627 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3628 | (cv = GvCVu(gv))) |
3629 | { | |
3630 | if (GvIMPORTED_CV(gv)) | |
3631 | ogv = gv; | |
3632 | else if (! CvMETHOD(cv)) | |
3633 | hgv = gv; | |
3634 | } | |
3635 | if (!ogv && | |
3280af22 NIS |
3636 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3637 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3638 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3639 | { | |
3640 | ogv = gv; | |
3641 | } | |
3642 | } | |
3643 | if (ogv) { | |
3644 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3645 | } |
3646 | else if (gv && !gvp | |
3647 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3648 | && GvCVu(gv) |
3280af22 | 3649 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3650 | { |
3651 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3652 | } |
56f7f34b CS |
3653 | else { /* no override */ |
3654 | tmp = -tmp; | |
3655 | gv = Nullgv; | |
3656 | gvp = 0; | |
4944e2f7 GS |
3657 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3658 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3659 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3660 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3661 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3662 | } |
a0d0e21e LW |
3663 | } |
3664 | ||
3665 | reserved_word: | |
3666 | switch (tmp) { | |
79072805 LW |
3667 | |
3668 | default: /* not a keyword */ | |
93a17b20 | 3669 | just_a_word: { |
96e4d5b1 | 3670 | SV *sv; |
3280af22 | 3671 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3672 | |
3673 | /* Get the rest if it looks like a package qualifier */ | |
3674 | ||
a0d0e21e | 3675 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3676 | STRLEN morelen; |
3280af22 | 3677 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3678 | TRUE, &morelen); |
3679 | if (!morelen) | |
cea2e8a9 | 3680 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3681 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3682 | len += morelen; |
a0d0e21e | 3683 | } |
8990e307 | 3684 | |
3280af22 NIS |
3685 | if (PL_expect == XOPERATOR) { |
3686 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3687 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3688 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3689 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3690 | } |
3691 | else | |
54310121 | 3692 | no_op("Bareword",s); |
463ee0b2 | 3693 | } |
8990e307 | 3694 | |
c3e0f903 GS |
3695 | /* Look for a subroutine with this name in current package, |
3696 | unless name is "Foo::", in which case Foo is a bearword | |
3697 | (and a package name). */ | |
3698 | ||
3699 | if (len > 2 && | |
3280af22 | 3700 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3701 | { |
e476b1b5 GS |
3702 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3703 | Perl_warner(aTHX_ WARN_BAREWORD, | |
599cee73 | 3704 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3705 | PL_tokenbuf); |
c3e0f903 | 3706 | len -= 2; |
3280af22 | 3707 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3708 | gv = Nullgv; |
3709 | gvp = 0; | |
3710 | } | |
3711 | else { | |
3712 | len = 0; | |
3713 | if (!gv) | |
3280af22 | 3714 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3715 | } |
3716 | ||
3717 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3718 | |
49dc05e3 | 3719 | if (gvp) { |
79cb57f6 | 3720 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3721 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3722 | } |
3723 | else | |
3280af22 | 3724 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3725 | |
a0d0e21e LW |
3726 | /* Presume this is going to be a bareword of some sort. */ |
3727 | ||
3728 | CLINE; | |
49dc05e3 | 3729 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3730 | yylval.opval->op_private = OPpCONST_BARE; |
3731 | ||
c3e0f903 GS |
3732 | /* And if "Foo::", then that's what it certainly is. */ |
3733 | ||
3734 | if (len) | |
3735 | goto safe_bareword; | |
3736 | ||
8990e307 LW |
3737 | /* See if it's the indirect object for a list operator. */ |
3738 | ||
3280af22 NIS |
3739 | if (PL_oldoldbufptr && |
3740 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3741 | (PL_oldoldbufptr == PL_last_lop |
3742 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3743 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3744 | (PL_expect == XREF || |
3745 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3746 | { |
748a9306 LW |
3747 | bool immediate_paren = *s == '('; |
3748 | ||
a0d0e21e LW |
3749 | /* (Now we can afford to cross potential line boundary.) */ |
3750 | s = skipspace(s); | |
3751 | ||
3752 | /* Two barewords in a row may indicate method call. */ | |
3753 | ||
7e2040f0 | 3754 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3755 | return tmp; |
3756 | ||
3757 | /* If not a declared subroutine, it's an indirect object. */ | |
3758 | /* (But it's an indir obj regardless for sort.) */ | |
3759 | ||
3280af22 | 3760 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3761 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3762 | (PL_last_lop_op != OP_MAPSTART && | |
3763 | PL_last_lop_op != OP_GREPSTART)) | |
3764 | { | |
3280af22 | 3765 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3766 | goto bareword; |
93a17b20 LW |
3767 | } |
3768 | } | |
8990e307 LW |
3769 | |
3770 | /* If followed by a paren, it's certainly a subroutine. */ | |
3771 | ||
3280af22 | 3772 | PL_expect = XOPERATOR; |
8990e307 | 3773 | s = skipspace(s); |
93a17b20 | 3774 | if (*s == '(') { |
79072805 | 3775 | CLINE; |
96e4d5b1 | 3776 | if (gv && GvCVu(gv)) { |
3777 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3778 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3779 | s = d + 1; |
3780 | goto its_constant; | |
3781 | } | |
3782 | } | |
3280af22 NIS |
3783 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3784 | PL_expect = XOPERATOR; | |
93a17b20 | 3785 | force_next(WORD); |
c07a80fd | 3786 | yylval.ival = 0; |
463ee0b2 | 3787 | TOKEN('&'); |
79072805 | 3788 | } |
93a17b20 | 3789 | |
a0d0e21e | 3790 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3791 | |
8ebc5c01 | 3792 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3793 | PL_last_lop = PL_oldbufptr; |
3794 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3795 | PREBLOCK(METHOD); |
463ee0b2 LW |
3796 | } |
3797 | ||
8990e307 LW |
3798 | /* If followed by a bareword, see if it looks like indir obj. */ |
3799 | ||
7e2040f0 | 3800 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3801 | return tmp; |
93a17b20 | 3802 | |
8990e307 LW |
3803 | /* Not a method, so call it a subroutine (if defined) */ |
3804 | ||
8ebc5c01 | 3805 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3806 | CV* cv; |
0453d815 PM |
3807 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3808 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3809 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3810 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3811 | /* Check for a constant sub */ |
46fc3d4c | 3812 | cv = GvCV(gv); |
96e4d5b1 | 3813 | if ((sv = cv_const_sv(cv))) { |
3814 | its_constant: | |
3815 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3816 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3817 | yylval.opval->op_private = 0; | |
3818 | TOKEN(WORD); | |
89bfa8cd | 3819 | } |
3820 | ||
a5f75d66 AD |
3821 | /* Resolve to GV now. */ |
3822 | op_free(yylval.opval); | |
3823 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3824 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3825 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3826 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3827 | /* Is there a prototype? */ |
3828 | if (SvPOK(cv)) { | |
3829 | STRLEN len; | |
7a52d87a | 3830 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3831 | if (!len) |
3832 | TERM(FUNC0SUB); | |
7a52d87a | 3833 | if (strEQ(proto, "$")) |
4633a7c4 | 3834 | OPERATOR(UNIOPSUB); |
7a52d87a | 3835 | if (*proto == '&' && *s == '{') { |
3280af22 | 3836 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3837 | PREBLOCK(LSTOPSUB); |
3838 | } | |
a9ef352a | 3839 | } |
3280af22 NIS |
3840 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3841 | PL_expect = XTERM; | |
8990e307 LW |
3842 | force_next(WORD); |
3843 | TOKEN(NOAMP); | |
3844 | } | |
748a9306 | 3845 | |
8990e307 LW |
3846 | /* Call it a bare word */ |
3847 | ||
5603f27d GS |
3848 | if (PL_hints & HINT_STRICT_SUBS) |
3849 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3850 | else { | |
3851 | bareword: | |
3852 | if (ckWARN(WARN_RESERVED)) { | |
3853 | if (lastchar != '-') { | |
3854 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3855 | if (!*d) | |
cea2e8a9 | 3856 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3857 | PL_tokenbuf); |
3858 | } | |
748a9306 LW |
3859 | } |
3860 | } | |
c3e0f903 GS |
3861 | |
3862 | safe_bareword: | |
f248d071 | 3863 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3864 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3865 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3866 | lastchar, PL_tokenbuf); |
0453d815 PM |
3867 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3868 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3869 | lastchar, lastchar); |
3870 | } | |
93a17b20 | 3871 | TOKEN(WORD); |
79072805 | 3872 | } |
79072805 | 3873 | |
68dc0745 | 3874 | case KEY___FILE__: |
46fc3d4c | 3875 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3876 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3877 | TERM(THING); |
3878 | ||
79072805 | 3879 | case KEY___LINE__: |
cf2093f6 | 3880 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3881 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3882 | TERM(THING); |
68dc0745 | 3883 | |
3884 | case KEY___PACKAGE__: | |
3885 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3886 | (PL_curstash |
3887 | ? newSVsv(PL_curstname) | |
3888 | : &PL_sv_undef)); | |
79072805 | 3889 | TERM(THING); |
79072805 | 3890 | |
e50aee73 | 3891 | case KEY___DATA__: |
79072805 LW |
3892 | case KEY___END__: { |
3893 | GV *gv; | |
79072805 LW |
3894 | |
3895 | /*SUPPRESS 560*/ | |
3280af22 | 3896 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3897 | char *pname = "main"; |
3280af22 NIS |
3898 | if (PL_tokenbuf[2] == 'D') |
3899 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3900 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3901 | GvMULTI_on(gv); |
79072805 | 3902 | if (!GvIO(gv)) |
a0d0e21e | 3903 | GvIOp(gv) = newIO(); |
3280af22 | 3904 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3905 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3906 | { | |
3280af22 | 3907 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3908 | fcntl(fd,F_SETFD,fd >= 3); |
3909 | } | |
79072805 | 3910 | #endif |
fd049845 | 3911 | /* Mark this internal pseudo-handle as clean */ |
3912 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3913 | if (PL_preprocess) |
a0d0e21e | 3914 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3915 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3916 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3917 | else |
a0d0e21e | 3918 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3919 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3920 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 3921 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 3922 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
3923 | if (PL_bufend-PL_bufptr > 2 |
3924 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
3925 | { |
3926 | Off_t loc = 0; | |
3927 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3928 | loc = PerlIO_tell(PL_rsfp); | |
3929 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3930 | } | |
3931 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3932 | #if defined(__BORLANDC__) | |
3933 | /* XXX see note in do_binmode() */ | |
3934 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3935 | #endif | |
3936 | if (loc > 0) | |
3937 | PerlIO_seek(PL_rsfp, loc, 0); | |
3938 | } | |
3939 | } | |
3940 | #endif | |
3280af22 | 3941 | PL_rsfp = Nullfp; |
79072805 LW |
3942 | } |
3943 | goto fake_eof; | |
e929a76b | 3944 | } |
de3bb511 | 3945 | |
8990e307 | 3946 | case KEY_AUTOLOAD: |
ed6116ce | 3947 | case KEY_DESTROY: |
79072805 | 3948 | case KEY_BEGIN: |
7d30b5c4 | 3949 | case KEY_CHECK: |
7d07dbc2 | 3950 | case KEY_INIT: |
7d30b5c4 | 3951 | case KEY_END: |
3280af22 NIS |
3952 | if (PL_expect == XSTATE) { |
3953 | s = PL_bufptr; | |
93a17b20 | 3954 | goto really_sub; |
79072805 LW |
3955 | } |
3956 | goto just_a_word; | |
3957 | ||
a0d0e21e LW |
3958 | case KEY_CORE: |
3959 | if (*s == ':' && s[1] == ':') { | |
3960 | s += 2; | |
748a9306 | 3961 | d = s; |
3280af22 NIS |
3962 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3963 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3964 | if (tmp < 0) |
3965 | tmp = -tmp; | |
3966 | goto reserved_word; | |
3967 | } | |
3968 | goto just_a_word; | |
3969 | ||
463ee0b2 LW |
3970 | case KEY_abs: |
3971 | UNI(OP_ABS); | |
3972 | ||
79072805 LW |
3973 | case KEY_alarm: |
3974 | UNI(OP_ALARM); | |
3975 | ||
3976 | case KEY_accept: | |
a0d0e21e | 3977 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3978 | |
463ee0b2 LW |
3979 | case KEY_and: |
3980 | OPERATOR(ANDOP); | |
3981 | ||
79072805 | 3982 | case KEY_atan2: |
a0d0e21e | 3983 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3984 | |
79072805 | 3985 | case KEY_bind: |
a0d0e21e | 3986 | LOP(OP_BIND,XTERM); |
79072805 LW |
3987 | |
3988 | case KEY_binmode: | |
3989 | UNI(OP_BINMODE); | |
3990 | ||
3991 | case KEY_bless: | |
a0d0e21e | 3992 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3993 | |
3994 | case KEY_chop: | |
3995 | UNI(OP_CHOP); | |
3996 | ||
3997 | case KEY_continue: | |
3998 | PREBLOCK(CONTINUE); | |
3999 | ||
4000 | case KEY_chdir: | |
85e6fe83 | 4001 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4002 | UNI(OP_CHDIR); |
4003 | ||
4004 | case KEY_close: | |
4005 | UNI(OP_CLOSE); | |
4006 | ||
4007 | case KEY_closedir: | |
4008 | UNI(OP_CLOSEDIR); | |
4009 | ||
4010 | case KEY_cmp: | |
4011 | Eop(OP_SCMP); | |
4012 | ||
4013 | case KEY_caller: | |
4014 | UNI(OP_CALLER); | |
4015 | ||
4016 | case KEY_crypt: | |
4017 | #ifdef FCRYPT | |
f4c556ac GS |
4018 | if (!PL_cryptseen) { |
4019 | PL_cryptseen = TRUE; | |
de3bb511 | 4020 | init_des(); |
f4c556ac | 4021 | } |
a687059c | 4022 | #endif |
a0d0e21e | 4023 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4024 | |
4025 | case KEY_chmod: | |
e476b1b5 | 4026 | if (ckWARN(WARN_CHMOD)) { |
3280af22 | 4027 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 4028 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4029 | Perl_warner(aTHX_ WARN_CHMOD, |
5a211162 | 4030 | "chmod() mode argument is missing initial 0"); |
748a9306 | 4031 | } |
a0d0e21e | 4032 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4033 | |
4034 | case KEY_chown: | |
a0d0e21e | 4035 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4036 | |
4037 | case KEY_connect: | |
a0d0e21e | 4038 | LOP(OP_CONNECT,XTERM); |
79072805 | 4039 | |
463ee0b2 LW |
4040 | case KEY_chr: |
4041 | UNI(OP_CHR); | |
4042 | ||
79072805 LW |
4043 | case KEY_cos: |
4044 | UNI(OP_COS); | |
4045 | ||
4046 | case KEY_chroot: | |
4047 | UNI(OP_CHROOT); | |
4048 | ||
4049 | case KEY_do: | |
4050 | s = skipspace(s); | |
4051 | if (*s == '{') | |
a0d0e21e | 4052 | PRETERMBLOCK(DO); |
79072805 | 4053 | if (*s != '\'') |
a0d0e21e | 4054 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 4055 | OPERATOR(DO); |
79072805 LW |
4056 | |
4057 | case KEY_die: | |
3280af22 | 4058 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4059 | LOP(OP_DIE,XTERM); |
79072805 LW |
4060 | |
4061 | case KEY_defined: | |
4062 | UNI(OP_DEFINED); | |
4063 | ||
4064 | case KEY_delete: | |
a0d0e21e | 4065 | UNI(OP_DELETE); |
79072805 LW |
4066 | |
4067 | case KEY_dbmopen: | |
a0d0e21e LW |
4068 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4069 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4070 | |
4071 | case KEY_dbmclose: | |
4072 | UNI(OP_DBMCLOSE); | |
4073 | ||
4074 | case KEY_dump: | |
a0d0e21e | 4075 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4076 | LOOPX(OP_DUMP); |
4077 | ||
4078 | case KEY_else: | |
4079 | PREBLOCK(ELSE); | |
4080 | ||
4081 | case KEY_elsif: | |
57843af0 | 4082 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4083 | OPERATOR(ELSIF); |
4084 | ||
4085 | case KEY_eq: | |
4086 | Eop(OP_SEQ); | |
4087 | ||
a0d0e21e LW |
4088 | case KEY_exists: |
4089 | UNI(OP_EXISTS); | |
4090 | ||
79072805 LW |
4091 | case KEY_exit: |
4092 | UNI(OP_EXIT); | |
4093 | ||
4094 | case KEY_eval: | |
79072805 | 4095 | s = skipspace(s); |
3280af22 | 4096 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4097 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4098 | |
4099 | case KEY_eof: | |
4100 | UNI(OP_EOF); | |
4101 | ||
4102 | case KEY_exp: | |
4103 | UNI(OP_EXP); | |
4104 | ||
4105 | case KEY_each: | |
4106 | UNI(OP_EACH); | |
4107 | ||
4108 | case KEY_exec: | |
4109 | set_csh(); | |
a0d0e21e | 4110 | LOP(OP_EXEC,XREF); |
79072805 LW |
4111 | |
4112 | case KEY_endhostent: | |
4113 | FUN0(OP_EHOSTENT); | |
4114 | ||
4115 | case KEY_endnetent: | |
4116 | FUN0(OP_ENETENT); | |
4117 | ||
4118 | case KEY_endservent: | |
4119 | FUN0(OP_ESERVENT); | |
4120 | ||
4121 | case KEY_endprotoent: | |
4122 | FUN0(OP_EPROTOENT); | |
4123 | ||
4124 | case KEY_endpwent: | |
4125 | FUN0(OP_EPWENT); | |
4126 | ||
4127 | case KEY_endgrent: | |
4128 | FUN0(OP_EGRENT); | |
4129 | ||
4130 | case KEY_for: | |
4131 | case KEY_foreach: | |
57843af0 | 4132 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4133 | s = skipspace(s); |
7e2040f0 | 4134 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4135 | char *p = s; |
3280af22 | 4136 | if ((PL_bufend - p) >= 3 && |
55497cff | 4137 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4138 | p += 2; | |
77ca0c92 LW |
4139 | else if ((PL_bufend - p) >= 4 && |
4140 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4141 | p += 3; | |
55497cff | 4142 | p = skipspace(p); |
7e2040f0 | 4143 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4144 | p = scan_ident(p, PL_bufend, |
4145 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4146 | p = skipspace(p); | |
4147 | } | |
4148 | if (*p != '$') | |
cea2e8a9 | 4149 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4150 | } |
79072805 LW |
4151 | OPERATOR(FOR); |
4152 | ||
4153 | case KEY_formline: | |
a0d0e21e | 4154 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4155 | |
4156 | case KEY_fork: | |
4157 | FUN0(OP_FORK); | |
4158 | ||
4159 | case KEY_fcntl: | |
a0d0e21e | 4160 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4161 | |
4162 | case KEY_fileno: | |
4163 | UNI(OP_FILENO); | |
4164 | ||
4165 | case KEY_flock: | |
a0d0e21e | 4166 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4167 | |
4168 | case KEY_gt: | |
4169 | Rop(OP_SGT); | |
4170 | ||
4171 | case KEY_ge: | |
4172 | Rop(OP_SGE); | |
4173 | ||
4174 | case KEY_grep: | |
2c38e13d | 4175 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4176 | |
4177 | case KEY_goto: | |
a0d0e21e | 4178 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4179 | LOOPX(OP_GOTO); |
4180 | ||
4181 | case KEY_gmtime: | |
4182 | UNI(OP_GMTIME); | |
4183 | ||
4184 | case KEY_getc: | |
4185 | UNI(OP_GETC); | |
4186 | ||
4187 | case KEY_getppid: | |
4188 | FUN0(OP_GETPPID); | |
4189 | ||
4190 | case KEY_getpgrp: | |
4191 | UNI(OP_GETPGRP); | |
4192 | ||
4193 | case KEY_getpriority: | |
a0d0e21e | 4194 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4195 | |
4196 | case KEY_getprotobyname: | |
4197 | UNI(OP_GPBYNAME); | |
4198 | ||
4199 | case KEY_getprotobynumber: | |
a0d0e21e | 4200 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4201 | |
4202 | case KEY_getprotoent: | |
4203 | FUN0(OP_GPROTOENT); | |
4204 | ||
4205 | case KEY_getpwent: | |
4206 | FUN0(OP_GPWENT); | |
4207 | ||
4208 | case KEY_getpwnam: | |
ff68c719 | 4209 | UNI(OP_GPWNAM); |
79072805 LW |
4210 | |
4211 | case KEY_getpwuid: | |
ff68c719 | 4212 | UNI(OP_GPWUID); |
79072805 LW |
4213 | |
4214 | case KEY_getpeername: | |
4215 | UNI(OP_GETPEERNAME); | |
4216 | ||
4217 | case KEY_gethostbyname: | |
4218 | UNI(OP_GHBYNAME); | |
4219 | ||
4220 | case KEY_gethostbyaddr: | |
a0d0e21e | 4221 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4222 | |
4223 | case KEY_gethostent: | |
4224 | FUN0(OP_GHOSTENT); | |
4225 | ||
4226 | case KEY_getnetbyname: | |
4227 | UNI(OP_GNBYNAME); | |
4228 | ||
4229 | case KEY_getnetbyaddr: | |
a0d0e21e | 4230 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4231 | |
4232 | case KEY_getnetent: | |
4233 | FUN0(OP_GNETENT); | |
4234 | ||
4235 | case KEY_getservbyname: | |
a0d0e21e | 4236 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4237 | |
4238 | case KEY_getservbyport: | |
a0d0e21e | 4239 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4240 | |
4241 | case KEY_getservent: | |
4242 | FUN0(OP_GSERVENT); | |
4243 | ||
4244 | case KEY_getsockname: | |
4245 | UNI(OP_GETSOCKNAME); | |
4246 | ||
4247 | case KEY_getsockopt: | |
a0d0e21e | 4248 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4249 | |
4250 | case KEY_getgrent: | |
4251 | FUN0(OP_GGRENT); | |
4252 | ||
4253 | case KEY_getgrnam: | |
ff68c719 | 4254 | UNI(OP_GGRNAM); |
79072805 LW |
4255 | |
4256 | case KEY_getgrgid: | |
ff68c719 | 4257 | UNI(OP_GGRGID); |
79072805 LW |
4258 | |
4259 | case KEY_getlogin: | |
4260 | FUN0(OP_GETLOGIN); | |
4261 | ||
93a17b20 | 4262 | case KEY_glob: |
a0d0e21e LW |
4263 | set_csh(); |
4264 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4265 | |
79072805 LW |
4266 | case KEY_hex: |
4267 | UNI(OP_HEX); | |
4268 | ||
4269 | case KEY_if: | |
57843af0 | 4270 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4271 | OPERATOR(IF); |
4272 | ||
4273 | case KEY_index: | |
a0d0e21e | 4274 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4275 | |
4276 | case KEY_int: | |
4277 | UNI(OP_INT); | |
4278 | ||
4279 | case KEY_ioctl: | |
a0d0e21e | 4280 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4281 | |
4282 | case KEY_join: | |
a0d0e21e | 4283 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4284 | |
4285 | case KEY_keys: | |
4286 | UNI(OP_KEYS); | |
4287 | ||
4288 | case KEY_kill: | |
a0d0e21e | 4289 | LOP(OP_KILL,XTERM); |
79072805 LW |
4290 | |
4291 | case KEY_last: | |
a0d0e21e | 4292 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4293 | LOOPX(OP_LAST); |
a0d0e21e | 4294 | |
79072805 LW |
4295 | case KEY_lc: |
4296 | UNI(OP_LC); | |
4297 | ||
4298 | case KEY_lcfirst: | |
4299 | UNI(OP_LCFIRST); | |
4300 | ||
4301 | case KEY_local: | |
09bef843 | 4302 | yylval.ival = 0; |
79072805 LW |
4303 | OPERATOR(LOCAL); |
4304 | ||
4305 | case KEY_length: | |
4306 | UNI(OP_LENGTH); | |
4307 | ||
4308 | case KEY_lt: | |
4309 | Rop(OP_SLT); | |
4310 | ||
4311 | case KEY_le: | |
4312 | Rop(OP_SLE); | |
4313 | ||
4314 | case KEY_localtime: | |
4315 | UNI(OP_LOCALTIME); | |
4316 | ||
4317 | case KEY_log: | |
4318 | UNI(OP_LOG); | |
4319 | ||
4320 | case KEY_link: | |
a0d0e21e | 4321 | LOP(OP_LINK,XTERM); |
79072805 LW |
4322 | |
4323 | case KEY_listen: | |
a0d0e21e | 4324 | LOP(OP_LISTEN,XTERM); |
79072805 | 4325 | |
c0329465 MB |
4326 | case KEY_lock: |
4327 | UNI(OP_LOCK); | |
4328 | ||
79072805 LW |
4329 | case KEY_lstat: |
4330 | UNI(OP_LSTAT); | |
4331 | ||
4332 | case KEY_m: | |
8782bef2 | 4333 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4334 | TERM(sublex_start()); |
4335 | ||
a0d0e21e | 4336 | case KEY_map: |
2c38e13d | 4337 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4338 | |
79072805 | 4339 | case KEY_mkdir: |
a0d0e21e | 4340 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4341 | |
4342 | case KEY_msgctl: | |
a0d0e21e | 4343 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4344 | |
4345 | case KEY_msgget: | |
a0d0e21e | 4346 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4347 | |
4348 | case KEY_msgrcv: | |
a0d0e21e | 4349 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4350 | |
4351 | case KEY_msgsnd: | |
a0d0e21e | 4352 | LOP(OP_MSGSND,XTERM); |
79072805 | 4353 | |
77ca0c92 | 4354 | case KEY_our: |
93a17b20 | 4355 | case KEY_my: |
77ca0c92 | 4356 | PL_in_my = tmp; |
c750a3ec | 4357 | s = skipspace(s); |
7e2040f0 | 4358 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4359 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4360 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4361 | goto really_sub; | |
3280af22 NIS |
4362 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4363 | if (!PL_in_my_stash) { | |
c750a3ec | 4364 | char tmpbuf[1024]; |
3280af22 NIS |
4365 | PL_bufptr = s; |
4366 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4367 | yyerror(tmpbuf); |
4368 | } | |
4369 | } | |
09bef843 | 4370 | yylval.ival = 1; |
55497cff | 4371 | OPERATOR(MY); |
93a17b20 | 4372 | |
79072805 | 4373 | case KEY_next: |
a0d0e21e | 4374 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4375 | LOOPX(OP_NEXT); |
4376 | ||
4377 | case KEY_ne: | |
4378 | Eop(OP_SNE); | |
4379 | ||
a0d0e21e | 4380 | case KEY_no: |
3280af22 | 4381 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4382 | yyerror("\"no\" not allowed in expression"); |
4383 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4384 | s = force_version(s); |
a0d0e21e LW |
4385 | yylval.ival = 0; |
4386 | OPERATOR(USE); | |
4387 | ||
4388 | case KEY_not: | |
2d2e263d LW |
4389 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4390 | FUN1(OP_NOT); | |
4391 | else | |
4392 | OPERATOR(NOTOP); | |
a0d0e21e | 4393 | |
79072805 | 4394 | case KEY_open: |
93a17b20 | 4395 | s = skipspace(s); |
7e2040f0 | 4396 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4397 | char *t; |
7e2040f0 | 4398 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4399 | t = skipspace(d); |
e476b1b5 GS |
4400 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4401 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4402 | "Precedence problem: open %.*s should be open(%.*s)", |
4403 | d-s,s, d-s,s); | |
93a17b20 | 4404 | } |
a0d0e21e | 4405 | LOP(OP_OPEN,XTERM); |
79072805 | 4406 | |
463ee0b2 | 4407 | case KEY_or: |
a0d0e21e | 4408 | yylval.ival = OP_OR; |
463ee0b2 LW |
4409 | OPERATOR(OROP); |
4410 | ||
79072805 LW |
4411 | case KEY_ord: |
4412 | UNI(OP_ORD); | |
4413 | ||
4414 | case KEY_oct: | |
4415 | UNI(OP_OCT); | |
4416 | ||
4417 | case KEY_opendir: | |
a0d0e21e | 4418 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4419 | |
4420 | case KEY_print: | |
3280af22 | 4421 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4422 | LOP(OP_PRINT,XREF); |
79072805 LW |
4423 | |
4424 | case KEY_printf: | |
3280af22 | 4425 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4426 | LOP(OP_PRTF,XREF); |
79072805 | 4427 | |
c07a80fd | 4428 | case KEY_prototype: |
4429 | UNI(OP_PROTOTYPE); | |
4430 | ||
79072805 | 4431 | case KEY_push: |
a0d0e21e | 4432 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4433 | |
4434 | case KEY_pop: | |
4435 | UNI(OP_POP); | |
4436 | ||
a0d0e21e LW |
4437 | case KEY_pos: |
4438 | UNI(OP_POS); | |
4439 | ||
79072805 | 4440 | case KEY_pack: |
a0d0e21e | 4441 | LOP(OP_PACK,XTERM); |
79072805 LW |
4442 | |
4443 | case KEY_package: | |
a0d0e21e | 4444 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4445 | OPERATOR(PACKAGE); |
4446 | ||
4447 | case KEY_pipe: | |
a0d0e21e | 4448 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4449 | |
4450 | case KEY_q: | |
09bef843 | 4451 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4452 | if (!s) |
85e6fe83 | 4453 | missingterm((char*)0); |
79072805 LW |
4454 | yylval.ival = OP_CONST; |
4455 | TERM(sublex_start()); | |
4456 | ||
a0d0e21e LW |
4457 | case KEY_quotemeta: |
4458 | UNI(OP_QUOTEMETA); | |
4459 | ||
8990e307 | 4460 | case KEY_qw: |
09bef843 | 4461 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4462 | if (!s) |
85e6fe83 | 4463 | missingterm((char*)0); |
8127e0e3 GS |
4464 | force_next(')'); |
4465 | if (SvCUR(PL_lex_stuff)) { | |
4466 | OP *words = Nullop; | |
4467 | int warned = 0; | |
3280af22 | 4468 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4469 | while (len) { |
4470 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4471 | if (len) { | |
4472 | char *b = d; | |
e476b1b5 | 4473 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4474 | for (; !isSPACE(*d) && len; --len, ++d) { |
4475 | if (*d == ',') { | |
e476b1b5 | 4476 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4477 | "Possible attempt to separate words with commas"); |
4478 | ++warned; | |
4479 | } | |
4480 | else if (*d == '#') { | |
e476b1b5 | 4481 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4482 | "Possible attempt to put comments in qw() list"); |
4483 | ++warned; | |
4484 | } | |
4485 | } | |
4486 | } | |
4487 | else { | |
4488 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4489 | } | |
4490 | words = append_elem(OP_LIST, words, | |
4491 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4492 | } |
4493 | } | |
8127e0e3 GS |
4494 | if (words) { |
4495 | PL_nextval[PL_nexttoke].opval = words; | |
4496 | force_next(THING); | |
4497 | } | |
55497cff | 4498 | } |
8127e0e3 GS |
4499 | if (PL_lex_stuff) |
4500 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4501 | PL_lex_stuff = Nullsv; |
3280af22 | 4502 | PL_expect = XTERM; |
8127e0e3 | 4503 | TOKEN('('); |
8990e307 | 4504 | |
79072805 | 4505 | case KEY_qq: |
09bef843 | 4506 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4507 | if (!s) |
85e6fe83 | 4508 | missingterm((char*)0); |
a0d0e21e | 4509 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4510 | if (SvIVX(PL_lex_stuff) == '\'') |
4511 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4512 | TERM(sublex_start()); |
4513 | ||
8782bef2 GB |
4514 | case KEY_qr: |
4515 | s = scan_pat(s,OP_QR); | |
4516 | TERM(sublex_start()); | |
4517 | ||
79072805 | 4518 | case KEY_qx: |
09bef843 | 4519 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4520 | if (!s) |
85e6fe83 | 4521 | missingterm((char*)0); |
79072805 LW |
4522 | yylval.ival = OP_BACKTICK; |
4523 | set_csh(); | |
4524 | TERM(sublex_start()); | |
4525 | ||
4526 | case KEY_return: | |
4527 | OLDLOP(OP_RETURN); | |
4528 | ||
4529 | case KEY_require: | |
a7cb1f99 GS |
4530 | s = skipspace(s); |
4531 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4532 | s = force_version(s); | |
4533 | } | |
4534 | else { | |
4535 | *PL_tokenbuf = '\0'; | |
4536 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4537 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4538 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4539 | else if (*s == '<') | |
4540 | yyerror("<> should be quotes"); | |
4541 | } | |
463ee0b2 | 4542 | UNI(OP_REQUIRE); |
79072805 LW |
4543 | |
4544 | case KEY_reset: | |
4545 | UNI(OP_RESET); | |
4546 | ||
4547 | case KEY_redo: | |
a0d0e21e | 4548 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4549 | LOOPX(OP_REDO); |
4550 | ||
4551 | case KEY_rename: | |
a0d0e21e | 4552 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4553 | |
4554 | case KEY_rand: | |
4555 | UNI(OP_RAND); | |
4556 | ||
4557 | case KEY_rmdir: | |
4558 | UNI(OP_RMDIR); | |
4559 | ||
4560 | case KEY_rindex: | |
a0d0e21e | 4561 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4562 | |
4563 | case KEY_read: | |
a0d0e21e | 4564 | LOP(OP_READ,XTERM); |
79072805 LW |
4565 | |
4566 | case KEY_readdir: | |
4567 | UNI(OP_READDIR); | |
4568 | ||
93a17b20 LW |
4569 | case KEY_readline: |
4570 | set_csh(); | |
4571 | UNI(OP_READLINE); | |
4572 | ||
4573 | case KEY_readpipe: | |
4574 | set_csh(); | |
4575 | UNI(OP_BACKTICK); | |
4576 | ||
79072805 LW |
4577 | case KEY_rewinddir: |
4578 | UNI(OP_REWINDDIR); | |
4579 | ||
4580 | case KEY_recv: | |
a0d0e21e | 4581 | LOP(OP_RECV,XTERM); |
79072805 LW |
4582 | |
4583 | case KEY_reverse: | |
a0d0e21e | 4584 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4585 | |
4586 | case KEY_readlink: | |
4587 | UNI(OP_READLINK); | |
4588 | ||
4589 | case KEY_ref: | |
4590 | UNI(OP_REF); | |
4591 | ||
4592 | case KEY_s: | |
4593 | s = scan_subst(s); | |
4594 | if (yylval.opval) | |
4595 | TERM(sublex_start()); | |
4596 | else | |
4597 | TOKEN(1); /* force error */ | |
4598 | ||
a0d0e21e LW |
4599 | case KEY_chomp: |
4600 | UNI(OP_CHOMP); | |
4601 | ||
79072805 LW |
4602 | case KEY_scalar: |
4603 | UNI(OP_SCALAR); | |
4604 | ||
4605 | case KEY_select: | |
a0d0e21e | 4606 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4607 | |
4608 | case KEY_seek: | |
a0d0e21e | 4609 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4610 | |
4611 | case KEY_semctl: | |
a0d0e21e | 4612 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4613 | |
4614 | case KEY_semget: | |
a0d0e21e | 4615 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4616 | |
4617 | case KEY_semop: | |
a0d0e21e | 4618 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4619 | |
4620 | case KEY_send: | |
a0d0e21e | 4621 | LOP(OP_SEND,XTERM); |
79072805 LW |
4622 | |
4623 | case KEY_setpgrp: | |
a0d0e21e | 4624 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4625 | |
4626 | case KEY_setpriority: | |
a0d0e21e | 4627 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4628 | |
4629 | case KEY_sethostent: | |
ff68c719 | 4630 | UNI(OP_SHOSTENT); |
79072805 LW |
4631 | |
4632 | case KEY_setnetent: | |
ff68c719 | 4633 | UNI(OP_SNETENT); |
79072805 LW |
4634 | |
4635 | case KEY_setservent: | |
ff68c719 | 4636 | UNI(OP_SSERVENT); |
79072805 LW |
4637 | |
4638 | case KEY_setprotoent: | |
ff68c719 | 4639 | UNI(OP_SPROTOENT); |
79072805 LW |
4640 | |
4641 | case KEY_setpwent: | |
4642 | FUN0(OP_SPWENT); | |
4643 | ||
4644 | case KEY_setgrent: | |
4645 | FUN0(OP_SGRENT); | |
4646 | ||
4647 | case KEY_seekdir: | |
a0d0e21e | 4648 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4649 | |
4650 | case KEY_setsockopt: | |
a0d0e21e | 4651 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4652 | |
4653 | case KEY_shift: | |
4654 | UNI(OP_SHIFT); | |
4655 | ||
4656 | case KEY_shmctl: | |
a0d0e21e | 4657 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4658 | |
4659 | case KEY_shmget: | |
a0d0e21e | 4660 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4661 | |
4662 | case KEY_shmread: | |
a0d0e21e | 4663 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4664 | |
4665 | case KEY_shmwrite: | |
a0d0e21e | 4666 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4667 | |
4668 | case KEY_shutdown: | |
a0d0e21e | 4669 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4670 | |
4671 | case KEY_sin: | |
4672 | UNI(OP_SIN); | |
4673 | ||
4674 | case KEY_sleep: | |
4675 | UNI(OP_SLEEP); | |
4676 | ||
4677 | case KEY_socket: | |
a0d0e21e | 4678 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4679 | |
4680 | case KEY_socketpair: | |
a0d0e21e | 4681 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4682 | |
4683 | case KEY_sort: | |
3280af22 | 4684 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4685 | s = skipspace(s); |
4686 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4687 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4688 | PL_expect = XTERM; |
15f0808c | 4689 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4690 | LOP(OP_SORT,XREF); |
79072805 LW |
4691 | |
4692 | case KEY_split: | |
a0d0e21e | 4693 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4694 | |
4695 | case KEY_sprintf: | |
a0d0e21e | 4696 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4697 | |
4698 | case KEY_splice: | |
a0d0e21e | 4699 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4700 | |
4701 | case KEY_sqrt: | |
4702 | UNI(OP_SQRT); | |
4703 | ||
4704 | case KEY_srand: | |
4705 | UNI(OP_SRAND); | |
4706 | ||
4707 | case KEY_stat: | |
4708 | UNI(OP_STAT); | |
4709 | ||
4710 | case KEY_study: | |
79072805 LW |
4711 | UNI(OP_STUDY); |
4712 | ||
4713 | case KEY_substr: | |
a0d0e21e | 4714 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4715 | |
4716 | case KEY_format: | |
4717 | case KEY_sub: | |
93a17b20 | 4718 | really_sub: |
09bef843 | 4719 | { |
3280af22 | 4720 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4721 | SSize_t tboffset; |
09bef843 SB |
4722 | expectation attrful; |
4723 | bool have_name, have_proto; | |
4724 | int key = tmp; | |
4725 | ||
4726 | s = skipspace(s); | |
4727 | ||
7e2040f0 | 4728 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4729 | (*s == ':' && s[1] == ':')) |
4730 | { | |
4731 | PL_expect = XBLOCK; | |
4732 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4733 | /* remember buffer pos'n for later force_word */ |
4734 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4735 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4736 | if (strchr(tmpbuf, ':')) | |
4737 | sv_setpv(PL_subname, tmpbuf); | |
4738 | else { | |
4739 | sv_setsv(PL_subname,PL_curstname); | |
4740 | sv_catpvn(PL_subname,"::",2); | |
4741 | sv_catpvn(PL_subname,tmpbuf,len); | |
4742 | } | |
4743 | s = skipspace(d); | |
4744 | have_name = TRUE; | |
4745 | } | |
463ee0b2 | 4746 | else { |
09bef843 SB |
4747 | if (key == KEY_my) |
4748 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4749 | PL_expect = XTERMBLOCK; | |
4750 | attrful = XATTRTERM; | |
4751 | sv_setpv(PL_subname,"?"); | |
4752 | have_name = FALSE; | |
463ee0b2 | 4753 | } |
4633a7c4 | 4754 | |
09bef843 SB |
4755 | if (key == KEY_format) { |
4756 | if (*s == '=') | |
4757 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4758 | if (have_name) | |
b1b65b59 JH |
4759 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4760 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4761 | OPERATOR(FORMAT); |
4762 | } | |
79072805 | 4763 | |
09bef843 SB |
4764 | /* Look for a prototype */ |
4765 | if (*s == '(') { | |
4766 | char *p; | |
4767 | ||
4768 | s = scan_str(s,FALSE,FALSE); | |
4769 | if (!s) { | |
4770 | if (PL_lex_stuff) | |
4771 | SvREFCNT_dec(PL_lex_stuff); | |
4772 | PL_lex_stuff = Nullsv; | |
4773 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4774 | } | |
4775 | /* strip spaces */ | |
4776 | d = SvPVX(PL_lex_stuff); | |
4777 | tmp = 0; | |
4778 | for (p = d; *p; ++p) { | |
4779 | if (!isSPACE(*p)) | |
4780 | d[tmp++] = *p; | |
4781 | } | |
4782 | d[tmp] = '\0'; | |
4783 | SvCUR(PL_lex_stuff) = tmp; | |
4784 | have_proto = TRUE; | |
68dc0745 | 4785 | |
09bef843 | 4786 | s = skipspace(s); |
4633a7c4 | 4787 | } |
09bef843 SB |
4788 | else |
4789 | have_proto = FALSE; | |
4790 | ||
4791 | if (*s == ':' && s[1] != ':') | |
4792 | PL_expect = attrful; | |
4793 | ||
4794 | if (have_proto) { | |
b1b65b59 JH |
4795 | PL_nextval[PL_nexttoke].opval = |
4796 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4797 | PL_lex_stuff = Nullsv; |
4798 | force_next(THING); | |
68dc0745 | 4799 | } |
09bef843 SB |
4800 | if (!have_name) { |
4801 | sv_setpv(PL_subname,"__ANON__"); | |
4802 | TOKEN(ANONSUB); | |
4633a7c4 | 4803 | } |
b1b65b59 JH |
4804 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4805 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4806 | if (key == KEY_my) |
4807 | TOKEN(MYSUB); | |
4808 | TOKEN(SUB); | |
4633a7c4 | 4809 | } |
79072805 LW |
4810 | |
4811 | case KEY_system: | |
4812 | set_csh(); | |
a0d0e21e | 4813 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4814 | |
4815 | case KEY_symlink: | |
a0d0e21e | 4816 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4817 | |
4818 | case KEY_syscall: | |
a0d0e21e | 4819 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4820 | |
c07a80fd | 4821 | case KEY_sysopen: |
4822 | LOP(OP_SYSOPEN,XTERM); | |
4823 | ||
137443ea | 4824 | case KEY_sysseek: |
4825 | LOP(OP_SYSSEEK,XTERM); | |
4826 | ||
79072805 | 4827 | case KEY_sysread: |
a0d0e21e | 4828 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4829 | |
4830 | case KEY_syswrite: | |
a0d0e21e | 4831 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4832 | |
4833 | case KEY_tr: | |
4834 | s = scan_trans(s); | |
4835 | TERM(sublex_start()); | |
4836 | ||
4837 | case KEY_tell: | |
4838 | UNI(OP_TELL); | |
4839 | ||
4840 | case KEY_telldir: | |
4841 | UNI(OP_TELLDIR); | |
4842 | ||
463ee0b2 | 4843 | case KEY_tie: |
a0d0e21e | 4844 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4845 | |
c07a80fd | 4846 | case KEY_tied: |
4847 | UNI(OP_TIED); | |
4848 | ||
79072805 LW |
4849 | case KEY_time: |
4850 | FUN0(OP_TIME); | |
4851 | ||
4852 | case KEY_times: | |
4853 | FUN0(OP_TMS); | |
4854 | ||
4855 | case KEY_truncate: | |
a0d0e21e | 4856 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4857 | |
4858 | case KEY_uc: | |
4859 | UNI(OP_UC); | |
4860 | ||
4861 | case KEY_ucfirst: | |
4862 | UNI(OP_UCFIRST); | |
4863 | ||
463ee0b2 LW |
4864 | case KEY_untie: |
4865 | UNI(OP_UNTIE); | |
4866 | ||
79072805 | 4867 | case KEY_until: |
57843af0 | 4868 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4869 | OPERATOR(UNTIL); |
4870 | ||
4871 | case KEY_unless: | |
57843af0 | 4872 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4873 | OPERATOR(UNLESS); |
4874 | ||
4875 | case KEY_unlink: | |
a0d0e21e | 4876 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4877 | |
4878 | case KEY_undef: | |
4879 | UNI(OP_UNDEF); | |
4880 | ||
4881 | case KEY_unpack: | |
a0d0e21e | 4882 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4883 | |
4884 | case KEY_utime: | |
a0d0e21e | 4885 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4886 | |
4887 | case KEY_umask: | |
e476b1b5 | 4888 | if (ckWARN(WARN_UMASK)) { |
3280af22 | 4889 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 | 4890 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4891 | Perl_warner(aTHX_ WARN_UMASK, |
4438c4b7 | 4892 | "umask: argument is missing initial 0"); |
748a9306 | 4893 | } |
79072805 LW |
4894 | UNI(OP_UMASK); |
4895 | ||
4896 | case KEY_unshift: | |
a0d0e21e LW |
4897 | LOP(OP_UNSHIFT,XTERM); |
4898 | ||
4899 | case KEY_use: | |
3280af22 | 4900 | if (PL_expect != XSTATE) |
a0d0e21e | 4901 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4902 | s = skipspace(s); |
a7cb1f99 | 4903 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4904 | s = force_version(s); |
a7cb1f99 | 4905 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4906 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4907 | force_next(WORD); |
4908 | } | |
4909 | } | |
4910 | else { | |
4911 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4912 | s = force_version(s); | |
4913 | } | |
a0d0e21e LW |
4914 | yylval.ival = 1; |
4915 | OPERATOR(USE); | |
79072805 LW |
4916 | |
4917 | case KEY_values: | |
4918 | UNI(OP_VALUES); | |
4919 | ||
4920 | case KEY_vec: | |
a0d0e21e | 4921 | LOP(OP_VEC,XTERM); |
79072805 LW |
4922 | |
4923 | case KEY_while: | |
57843af0 | 4924 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4925 | OPERATOR(WHILE); |
4926 | ||
4927 | case KEY_warn: | |
3280af22 | 4928 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4929 | LOP(OP_WARN,XTERM); |
79072805 LW |
4930 | |
4931 | case KEY_wait: | |
4932 | FUN0(OP_WAIT); | |
4933 | ||
4934 | case KEY_waitpid: | |
a0d0e21e | 4935 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4936 | |
4937 | case KEY_wantarray: | |
4938 | FUN0(OP_WANTARRAY); | |
4939 | ||
4940 | case KEY_write: | |
9d116dd7 JH |
4941 | #ifdef EBCDIC |
4942 | { | |
4943 | static char ctl_l[2]; | |
4944 | ||
4945 | if (ctl_l[0] == '\0') | |
4946 | ctl_l[0] = toCTRL('L'); | |
4947 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4948 | } | |
4949 | #else | |
4950 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4951 | #endif | |
79072805 LW |
4952 | UNI(OP_ENTERWRITE); |
4953 | ||
4954 | case KEY_x: | |
3280af22 | 4955 | if (PL_expect == XOPERATOR) |
79072805 LW |
4956 | Mop(OP_REPEAT); |
4957 | check_uni(); | |
4958 | goto just_a_word; | |
4959 | ||
a0d0e21e LW |
4960 | case KEY_xor: |
4961 | yylval.ival = OP_XOR; | |
4962 | OPERATOR(OROP); | |
4963 | ||
79072805 LW |
4964 | case KEY_y: |
4965 | s = scan_trans(s); | |
4966 | TERM(sublex_start()); | |
4967 | } | |
49dc05e3 | 4968 | }} |
79072805 LW |
4969 | } |
4970 | ||
4971 | I32 | |
864dbfa3 | 4972 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4973 | { |
4974 | switch (*d) { | |
4975 | case '_': | |
4976 | if (d[1] == '_') { | |
a0d0e21e | 4977 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4978 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4979 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4980 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4981 | if (strEQ(d,"__END__")) return KEY___END__; |
4982 | } | |
4983 | break; | |
8990e307 LW |
4984 | case 'A': |
4985 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4986 | break; | |
79072805 | 4987 | case 'a': |
463ee0b2 LW |
4988 | switch (len) { |
4989 | case 3: | |
a0d0e21e LW |
4990 | if (strEQ(d,"and")) return -KEY_and; |
4991 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4992 | break; |
463ee0b2 | 4993 | case 5: |
a0d0e21e LW |
4994 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4995 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4996 | break; |
4997 | case 6: | |
a0d0e21e | 4998 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4999 | break; |
5000 | } | |
79072805 LW |
5001 | break; |
5002 | case 'B': | |
5003 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5004 | break; |
79072805 | 5005 | case 'b': |
a0d0e21e LW |
5006 | if (strEQ(d,"bless")) return -KEY_bless; |
5007 | if (strEQ(d,"bind")) return -KEY_bind; | |
5008 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5009 | break; | |
5010 | case 'C': | |
5011 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5012 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5013 | break; |
5014 | case 'c': | |
5015 | switch (len) { | |
5016 | case 3: | |
a0d0e21e LW |
5017 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5018 | if (strEQ(d,"chr")) return -KEY_chr; | |
5019 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5020 | break; |
5021 | case 4: | |
5022 | if (strEQ(d,"chop")) return KEY_chop; | |
5023 | break; | |
5024 | case 5: | |
a0d0e21e LW |
5025 | if (strEQ(d,"close")) return -KEY_close; |
5026 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
5027 | if (strEQ(d,"chomp")) return KEY_chomp; | |
5028 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
5029 | if (strEQ(d,"chown")) return -KEY_chown; | |
5030 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5031 | break; |
5032 | case 6: | |
a0d0e21e LW |
5033 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5034 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5035 | break; |
5036 | case 7: | |
a0d0e21e | 5037 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5038 | break; |
5039 | case 8: | |
a0d0e21e LW |
5040 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5041 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5042 | break; |
5043 | } | |
5044 | break; | |
ed6116ce LW |
5045 | case 'D': |
5046 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5047 | break; | |
79072805 LW |
5048 | case 'd': |
5049 | switch (len) { | |
5050 | case 2: | |
5051 | if (strEQ(d,"do")) return KEY_do; | |
5052 | break; | |
5053 | case 3: | |
a0d0e21e | 5054 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5055 | break; |
5056 | case 4: | |
a0d0e21e | 5057 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5058 | break; |
5059 | case 6: | |
5060 | if (strEQ(d,"delete")) return KEY_delete; | |
5061 | break; | |
5062 | case 7: | |
5063 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5064 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5065 | break; |
5066 | case 8: | |
a0d0e21e | 5067 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5068 | break; |
5069 | } | |
5070 | break; | |
5071 | case 'E': | |
a0d0e21e | 5072 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
5073 | if (strEQ(d,"END")) return KEY_END; |
5074 | break; | |
5075 | case 'e': | |
5076 | switch (len) { | |
5077 | case 2: | |
a0d0e21e | 5078 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5079 | break; |
5080 | case 3: | |
a0d0e21e LW |
5081 | if (strEQ(d,"eof")) return -KEY_eof; |
5082 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5083 | break; |
5084 | case 4: | |
5085 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5086 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5087 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5088 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
5089 | if (strEQ(d,"each")) return KEY_each; |
5090 | break; | |
5091 | case 5: | |
5092 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5093 | break; | |
a0d0e21e LW |
5094 | case 6: |
5095 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5096 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5097 | break; |
79072805 | 5098 | case 8: |
a0d0e21e LW |
5099 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5100 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5101 | break; |
5102 | case 9: | |
a0d0e21e | 5103 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5104 | break; |
5105 | case 10: | |
a0d0e21e LW |
5106 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5107 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5108 | break; |
5109 | case 11: | |
a0d0e21e | 5110 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5111 | break; |
a687059c | 5112 | } |
a687059c | 5113 | break; |
79072805 LW |
5114 | case 'f': |
5115 | switch (len) { | |
5116 | case 3: | |
5117 | if (strEQ(d,"for")) return KEY_for; | |
5118 | break; | |
5119 | case 4: | |
a0d0e21e | 5120 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5121 | break; |
5122 | case 5: | |
a0d0e21e LW |
5123 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5124 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5125 | break; |
5126 | case 6: | |
5127 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5128 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5129 | break; |
5130 | case 7: | |
5131 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5132 | break; | |
5133 | case 8: | |
a0d0e21e | 5134 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5135 | break; |
378cc40b | 5136 | } |
a687059c | 5137 | break; |
79072805 LW |
5138 | case 'G': |
5139 | if (len == 2) { | |
a0d0e21e LW |
5140 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5141 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5142 | } |
a687059c | 5143 | break; |
79072805 | 5144 | case 'g': |
a687059c LW |
5145 | if (strnEQ(d,"get",3)) { |
5146 | d += 3; | |
5147 | if (*d == 'p') { | |
79072805 LW |
5148 | switch (len) { |
5149 | case 7: | |
a0d0e21e LW |
5150 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5151 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5152 | break; |
5153 | case 8: | |
a0d0e21e LW |
5154 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5155 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5156 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5157 | break; |
5158 | case 11: | |
a0d0e21e LW |
5159 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5160 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5161 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5162 | break; |
5163 | case 14: | |
a0d0e21e | 5164 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5165 | break; |
5166 | case 16: | |
a0d0e21e | 5167 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5168 | break; |
5169 | } | |
a687059c LW |
5170 | } |
5171 | else if (*d == 'h') { | |
a0d0e21e LW |
5172 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5173 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5174 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5175 | } |
5176 | else if (*d == 'n') { | |
a0d0e21e LW |
5177 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5178 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5179 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5180 | } |
5181 | else if (*d == 's') { | |
a0d0e21e LW |
5182 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5183 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5184 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5185 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5186 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5187 | } |
5188 | else if (*d == 'g') { | |
a0d0e21e LW |
5189 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5190 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5191 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5192 | } |
5193 | else if (*d == 'l') { | |
a0d0e21e | 5194 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5195 | } |
a0d0e21e | 5196 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5197 | break; |
a687059c | 5198 | } |
79072805 LW |
5199 | switch (len) { |
5200 | case 2: | |
a0d0e21e LW |
5201 | if (strEQ(d,"gt")) return -KEY_gt; |
5202 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5203 | break; |
5204 | case 4: | |
5205 | if (strEQ(d,"grep")) return KEY_grep; | |
5206 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5207 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5208 | break; |
5209 | case 6: | |
a0d0e21e | 5210 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5211 | break; |
378cc40b | 5212 | } |
a687059c | 5213 | break; |
79072805 | 5214 | case 'h': |
a0d0e21e | 5215 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5216 | break; |
7d07dbc2 MB |
5217 | case 'I': |
5218 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5219 | break; | |
79072805 LW |
5220 | case 'i': |
5221 | switch (len) { | |
5222 | case 2: | |
5223 | if (strEQ(d,"if")) return KEY_if; | |
5224 | break; | |
5225 | case 3: | |
a0d0e21e | 5226 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5227 | break; |
5228 | case 5: | |
a0d0e21e LW |
5229 | if (strEQ(d,"index")) return -KEY_index; |
5230 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5231 | break; |
5232 | } | |
a687059c | 5233 | break; |
79072805 | 5234 | case 'j': |
a0d0e21e | 5235 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5236 | break; |
79072805 LW |
5237 | case 'k': |
5238 | if (len == 4) { | |
5239 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5240 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5241 | } |
79072805 LW |
5242 | break; |
5243 | case 'L': | |
5244 | if (len == 2) { | |
a0d0e21e LW |
5245 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5246 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5247 | } |
79072805 LW |
5248 | break; |
5249 | case 'l': | |
5250 | switch (len) { | |
5251 | case 2: | |
a0d0e21e LW |
5252 | if (strEQ(d,"lt")) return -KEY_lt; |
5253 | if (strEQ(d,"le")) return -KEY_le; | |
5254 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5255 | break; |
5256 | case 3: | |
a0d0e21e | 5257 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5258 | break; |
5259 | case 4: | |
5260 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5261 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5262 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5263 | break; |
79072805 LW |
5264 | case 5: |
5265 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5266 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5267 | break; |
5268 | case 6: | |
a0d0e21e LW |
5269 | if (strEQ(d,"length")) return -KEY_length; |
5270 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5271 | break; |
5272 | case 7: | |
a0d0e21e | 5273 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5274 | break; |
5275 | case 9: | |
a0d0e21e | 5276 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5277 | break; |
5278 | } | |
a687059c | 5279 | break; |
79072805 LW |
5280 | case 'm': |
5281 | switch (len) { | |
5282 | case 1: return KEY_m; | |
93a17b20 LW |
5283 | case 2: |
5284 | if (strEQ(d,"my")) return KEY_my; | |
5285 | break; | |
a0d0e21e LW |
5286 | case 3: |
5287 | if (strEQ(d,"map")) return KEY_map; | |
5288 | break; | |
79072805 | 5289 | case 5: |
a0d0e21e | 5290 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5291 | break; |
5292 | case 6: | |
a0d0e21e LW |
5293 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5294 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5295 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5296 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5297 | break; |
5298 | } | |
a687059c | 5299 | break; |
79072805 | 5300 | case 'N': |
a0d0e21e | 5301 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5302 | break; |
79072805 LW |
5303 | case 'n': |
5304 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5305 | if (strEQ(d,"ne")) return -KEY_ne; |
5306 | if (strEQ(d,"not")) return -KEY_not; | |
5307 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5308 | break; |
79072805 LW |
5309 | case 'o': |
5310 | switch (len) { | |
463ee0b2 | 5311 | case 2: |
a0d0e21e | 5312 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5313 | break; |
79072805 | 5314 | case 3: |
a0d0e21e LW |
5315 | if (strEQ(d,"ord")) return -KEY_ord; |
5316 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5317 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5318 | break; |
5319 | case 4: | |
a0d0e21e | 5320 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5321 | break; |
5322 | case 7: | |
a0d0e21e | 5323 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5324 | break; |
fe14fcc3 | 5325 | } |
a687059c | 5326 | break; |
79072805 LW |
5327 | case 'p': |
5328 | switch (len) { | |
5329 | case 3: | |
5330 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5331 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5332 | break; |
5333 | case 4: | |
5334 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5335 | if (strEQ(d,"pack")) return -KEY_pack; |
5336 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5337 | break; |
5338 | case 5: | |
5339 | if (strEQ(d,"print")) return KEY_print; | |
5340 | break; | |
5341 | case 6: | |
5342 | if (strEQ(d,"printf")) return KEY_printf; | |
5343 | break; | |
5344 | case 7: | |
5345 | if (strEQ(d,"package")) return KEY_package; | |
5346 | break; | |
c07a80fd | 5347 | case 9: |
5348 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5349 | } |
79072805 LW |
5350 | break; |
5351 | case 'q': | |
5352 | if (len <= 2) { | |
5353 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5354 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5355 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5356 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5357 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5358 | } |
a0d0e21e | 5359 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5360 | break; |
5361 | case 'r': | |
5362 | switch (len) { | |
5363 | case 3: | |
a0d0e21e | 5364 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5365 | break; |
5366 | case 4: | |
a0d0e21e LW |
5367 | if (strEQ(d,"read")) return -KEY_read; |
5368 | if (strEQ(d,"rand")) return -KEY_rand; | |
5369 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5370 | if (strEQ(d,"redo")) return KEY_redo; |
5371 | break; | |
5372 | case 5: | |
a0d0e21e LW |
5373 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5374 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5375 | break; |
5376 | case 6: | |
5377 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5378 | if (strEQ(d,"rename")) return -KEY_rename; |
5379 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5380 | break; |
5381 | case 7: | |
a0d0e21e LW |
5382 | if (strEQ(d,"require")) return -KEY_require; |
5383 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5384 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5385 | break; |
5386 | case 8: | |
a0d0e21e LW |
5387 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5388 | if (strEQ(d,"readline")) return -KEY_readline; | |
5389 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5390 | break; |
5391 | case 9: | |
a0d0e21e | 5392 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5393 | break; |
a687059c | 5394 | } |
79072805 LW |
5395 | break; |
5396 | case 's': | |
a687059c | 5397 | switch (d[1]) { |
79072805 | 5398 | case 0: return KEY_s; |
a687059c | 5399 | case 'c': |
79072805 | 5400 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5401 | break; |
5402 | case 'e': | |
79072805 LW |
5403 | switch (len) { |
5404 | case 4: | |
a0d0e21e LW |
5405 | if (strEQ(d,"seek")) return -KEY_seek; |
5406 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5407 | break; |
5408 | case 5: | |
a0d0e21e | 5409 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5410 | break; |
5411 | case 6: | |
a0d0e21e LW |
5412 | if (strEQ(d,"select")) return -KEY_select; |
5413 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5414 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5415 | break; |
5416 | case 7: | |
a0d0e21e LW |
5417 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5418 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5419 | break; |
5420 | case 8: | |
a0d0e21e LW |
5421 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5422 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5423 | break; |
5424 | case 9: | |
a0d0e21e | 5425 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5426 | break; |
5427 | case 10: | |
a0d0e21e LW |
5428 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5429 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5430 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5431 | break; |
5432 | case 11: | |
a0d0e21e LW |
5433 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5434 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5435 | break; |
5436 | } | |
a687059c LW |
5437 | break; |
5438 | case 'h': | |
79072805 LW |
5439 | switch (len) { |
5440 | case 5: | |
5441 | if (strEQ(d,"shift")) return KEY_shift; | |
5442 | break; | |
5443 | case 6: | |
a0d0e21e LW |
5444 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5445 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5446 | break; |
5447 | case 7: | |
a0d0e21e | 5448 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5449 | break; |
5450 | case 8: | |
a0d0e21e LW |
5451 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5452 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5453 | break; |
5454 | } | |
a687059c LW |
5455 | break; |
5456 | case 'i': | |
a0d0e21e | 5457 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5458 | break; |
5459 | case 'l': | |
a0d0e21e | 5460 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5461 | break; |
5462 | case 'o': | |
79072805 | 5463 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5464 | if (strEQ(d,"socket")) return -KEY_socket; |
5465 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5466 | break; |
5467 | case 'p': | |
79072805 | 5468 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5469 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5470 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5471 | break; |
5472 | case 'q': | |
a0d0e21e | 5473 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5474 | break; |
5475 | case 'r': | |
a0d0e21e | 5476 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5477 | break; |
5478 | case 't': | |
a0d0e21e | 5479 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5480 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5481 | break; |
5482 | case 'u': | |
a0d0e21e | 5483 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5484 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5485 | break; |
5486 | case 'y': | |
79072805 LW |
5487 | switch (len) { |
5488 | case 6: | |
a0d0e21e | 5489 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5490 | break; |
5491 | case 7: | |
a0d0e21e LW |
5492 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5493 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5494 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5495 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5496 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5497 | break; |
5498 | case 8: | |
a0d0e21e | 5499 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5500 | break; |
a687059c | 5501 | } |
a687059c LW |
5502 | break; |
5503 | } | |
5504 | break; | |
79072805 LW |
5505 | case 't': |
5506 | switch (len) { | |
5507 | case 2: | |
5508 | if (strEQ(d,"tr")) return KEY_tr; | |
5509 | break; | |
463ee0b2 LW |
5510 | case 3: |
5511 | if (strEQ(d,"tie")) return KEY_tie; | |
5512 | break; | |
79072805 | 5513 | case 4: |
a0d0e21e | 5514 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5515 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5516 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5517 | break; |
5518 | case 5: | |
a0d0e21e | 5519 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5520 | break; |
5521 | case 7: | |
a0d0e21e | 5522 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5523 | break; |
5524 | case 8: | |
a0d0e21e | 5525 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5526 | break; |
378cc40b | 5527 | } |
a687059c | 5528 | break; |
79072805 LW |
5529 | case 'u': |
5530 | switch (len) { | |
5531 | case 2: | |
a0d0e21e LW |
5532 | if (strEQ(d,"uc")) return -KEY_uc; |
5533 | break; | |
5534 | case 3: | |
5535 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5536 | break; |
5537 | case 5: | |
5538 | if (strEQ(d,"undef")) return KEY_undef; | |
5539 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5540 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5541 | if (strEQ(d,"utime")) return -KEY_utime; |
5542 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5543 | break; |
5544 | case 6: | |
5545 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5546 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5547 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5548 | break; |
5549 | case 7: | |
5550 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5551 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5552 | break; |
a687059c LW |
5553 | } |
5554 | break; | |
79072805 | 5555 | case 'v': |
a0d0e21e LW |
5556 | if (strEQ(d,"values")) return -KEY_values; |
5557 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5558 | break; |
79072805 LW |
5559 | case 'w': |
5560 | switch (len) { | |
5561 | case 4: | |
a0d0e21e LW |
5562 | if (strEQ(d,"warn")) return -KEY_warn; |
5563 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5564 | break; |
5565 | case 5: | |
5566 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5567 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5568 | break; |
5569 | case 7: | |
a0d0e21e | 5570 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5571 | break; |
5572 | case 9: | |
a0d0e21e | 5573 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5574 | break; |
2f3197b3 | 5575 | } |
a687059c | 5576 | break; |
79072805 | 5577 | case 'x': |
a0d0e21e LW |
5578 | if (len == 1) return -KEY_x; |
5579 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5580 | break; |
79072805 LW |
5581 | case 'y': |
5582 | if (len == 1) return KEY_y; | |
5583 | break; | |
5584 | case 'z': | |
a687059c LW |
5585 | break; |
5586 | } | |
79072805 | 5587 | return 0; |
a687059c LW |
5588 | } |
5589 | ||
76e3520e | 5590 | STATIC void |
cea2e8a9 | 5591 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5592 | { |
2f3197b3 LW |
5593 | char *w; |
5594 | ||
d008e5eb GS |
5595 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5596 | dTHR; /* only for ckWARN */ | |
5597 | if (ckWARN(WARN_SYNTAX)) { | |
5598 | int level = 1; | |
5599 | for (w = s+2; *w && level; w++) { | |
5600 | if (*w == '(') | |
5601 | ++level; | |
5602 | else if (*w == ')') | |
5603 | --level; | |
5604 | } | |
5605 | if (*w) | |
5606 | for (; *w && isSPACE(*w); w++) ; | |
5607 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5608 | Perl_warner(aTHX_ WARN_SYNTAX, |
5609 | "%s (...) interpreted as function",name); | |
d008e5eb | 5610 | } |
2f3197b3 | 5611 | } |
3280af22 | 5612 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5613 | s++; |
a687059c LW |
5614 | if (*s == '(') |
5615 | s++; | |
3280af22 | 5616 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5617 | s++; |
7e2040f0 | 5618 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5619 | w = s++; |
7e2040f0 | 5620 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5621 | s++; |
3280af22 | 5622 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5623 | s++; |
e929a76b | 5624 | if (*s == ',') { |
463ee0b2 | 5625 | int kw; |
e929a76b | 5626 | *s = '\0'; |
864dbfa3 | 5627 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5628 | *s = ','; |
463ee0b2 | 5629 | if (kw) |
e929a76b | 5630 | return; |
cea2e8a9 | 5631 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5632 | } |
5633 | } | |
5634 | } | |
5635 | ||
423cee85 JH |
5636 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5637 | Best used as sv=new_constant(..., sv, ...). | |
5638 | If s, pv are NULL, calls subroutine with one argument, | |
5639 | and type is used with error messages only. */ | |
5640 | ||
b3ac6de7 | 5641 | STATIC SV * |
dff6d3cd GS |
5642 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
5643 | const char *type) | |
b3ac6de7 | 5644 | { |
b3ac6de7 | 5645 | dSP; |
3280af22 | 5646 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5647 | SV *res; |
b3ac6de7 IZ |
5648 | SV **cvp; |
5649 | SV *cv, *typesv; | |
dff6d3cd | 5650 | const char *why, *why1, *why2; |
423cee85 JH |
5651 | |
5652 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5653 | SV *msg; | |
5654 | ||
5655 | why = "%^H is not localized"; | |
5656 | report_short: | |
5657 | why1 = why2 = ""; | |
5658 | report: | |
5659 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5660 | (type ? type: "undef"), why1, why2, why); | |
5661 | yyerror(SvPVX(msg)); | |
5662 | SvREFCNT_dec(msg); | |
5663 | return sv; | |
5664 | } | |
b3ac6de7 | 5665 | if (!table) { |
423cee85 JH |
5666 | why = "%^H is not defined"; |
5667 | goto report_short; | |
b3ac6de7 IZ |
5668 | } |
5669 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5670 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5671 | why = "} is not defined"; |
5672 | why1 = "$^H{"; | |
5673 | why2 = key; | |
5674 | goto report; | |
b3ac6de7 IZ |
5675 | } |
5676 | sv_2mortal(sv); /* Parent created it permanently */ | |
5677 | cv = *cvp; | |
423cee85 JH |
5678 | if (!pv && s) |
5679 | pv = sv_2mortal(newSVpvn(s, len)); | |
5680 | if (type && pv) | |
5681 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5682 | else |
423cee85 JH |
5683 | typesv = &PL_sv_undef; |
5684 | ||
e788e7d3 | 5685 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5686 | ENTER ; |
5687 | SAVETMPS; | |
5688 | ||
5689 | PUSHMARK(SP) ; | |
25eaa213 | 5690 | EXTEND(sp, 4); |
423cee85 JH |
5691 | if (pv) |
5692 | PUSHs(pv); | |
b3ac6de7 | 5693 | PUSHs(sv); |
423cee85 JH |
5694 | if (pv) |
5695 | PUSHs(typesv); | |
b3ac6de7 IZ |
5696 | PUSHs(cv); |
5697 | PUTBACK; | |
423cee85 JH |
5698 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5699 | ||
5700 | SPAGAIN ; | |
5701 | ||
5702 | /* Check the eval first */ | |
5703 | if (!PL_in_eval && SvTRUE(ERRSV)) | |
5704 | { | |
5705 | STRLEN n_a; | |
5706 | sv_catpv(ERRSV, "Propagated"); | |
5707 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5708 | (void)POPs; |
423cee85 JH |
5709 | res = SvREFCNT_inc(sv); |
5710 | } | |
5711 | else { | |
5712 | res = POPs; | |
e1f15930 | 5713 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5714 | } |
5715 | ||
5716 | PUTBACK ; | |
5717 | FREETMPS ; | |
5718 | LEAVE ; | |
b3ac6de7 | 5719 | POPSTACK; |
423cee85 | 5720 | |
b3ac6de7 | 5721 | if (!SvOK(res)) { |
423cee85 JH |
5722 | why = "}} did not return a defined value"; |
5723 | why1 = "Call to &{$^H{"; | |
5724 | why2 = key; | |
5725 | sv = res; | |
5726 | goto report; | |
5727 | } | |
5728 | ||
5729 | return res; | |
b3ac6de7 | 5730 | } |
423cee85 | 5731 | |
76e3520e | 5732 | STATIC char * |
cea2e8a9 | 5733 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5734 | { |
5735 | register char *d = dest; | |
8903cb82 | 5736 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5737 | for (;;) { |
8903cb82 | 5738 | if (d >= e) |
cea2e8a9 | 5739 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5740 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5741 | *d++ = *s++; |
7e2040f0 | 5742 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5743 | *d++ = ':'; |
5744 | *d++ = ':'; | |
5745 | s++; | |
5746 | } | |
c3e0f903 | 5747 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5748 | *d++ = *s++; |
5749 | *d++ = *s++; | |
5750 | } | |
834a4ddd | 5751 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5752 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5753 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5754 | t += UTF8SKIP(t); |
5755 | if (d + (t - s) > e) | |
cea2e8a9 | 5756 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5757 | Copy(s, d, t - s, char); |
5758 | d += t - s; | |
5759 | s = t; | |
5760 | } | |
463ee0b2 LW |
5761 | else { |
5762 | *d = '\0'; | |
5763 | *slp = d - dest; | |
5764 | return s; | |
e929a76b | 5765 | } |
378cc40b LW |
5766 | } |
5767 | } | |
5768 | ||
76e3520e | 5769 | STATIC char * |
cea2e8a9 | 5770 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5771 | { |
5772 | register char *d; | |
8903cb82 | 5773 | register char *e; |
79072805 | 5774 | char *bracket = 0; |
748a9306 | 5775 | char funny = *s++; |
378cc40b | 5776 | |
a0d0e21e LW |
5777 | if (isSPACE(*s)) |
5778 | s = skipspace(s); | |
378cc40b | 5779 | d = dest; |
8903cb82 | 5780 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5781 | if (isDIGIT(*s)) { |
8903cb82 | 5782 | while (isDIGIT(*s)) { |
5783 | if (d >= e) | |
cea2e8a9 | 5784 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5785 | *d++ = *s++; |
8903cb82 | 5786 | } |
378cc40b LW |
5787 | } |
5788 | else { | |
463ee0b2 | 5789 | for (;;) { |
8903cb82 | 5790 | if (d >= e) |
cea2e8a9 | 5791 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5792 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5793 | *d++ = *s++; |
7e2040f0 | 5794 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5795 | *d++ = ':'; |
5796 | *d++ = ':'; | |
5797 | s++; | |
5798 | } | |
a0d0e21e | 5799 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5800 | *d++ = *s++; |
5801 | *d++ = *s++; | |
5802 | } | |
834a4ddd | 5803 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5804 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5805 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5806 | t += UTF8SKIP(t); |
5807 | if (d + (t - s) > e) | |
cea2e8a9 | 5808 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5809 | Copy(s, d, t - s, char); |
5810 | d += t - s; | |
5811 | s = t; | |
5812 | } | |
463ee0b2 LW |
5813 | else |
5814 | break; | |
5815 | } | |
378cc40b LW |
5816 | } |
5817 | *d = '\0'; | |
5818 | d = dest; | |
79072805 | 5819 | if (*d) { |
3280af22 NIS |
5820 | if (PL_lex_state != LEX_NORMAL) |
5821 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5822 | return s; |
378cc40b | 5823 | } |
748a9306 | 5824 | if (*s == '$' && s[1] && |
7e2040f0 | 5825 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5826 | { |
4810e5ec | 5827 | return s; |
5cd24f17 | 5828 | } |
79072805 LW |
5829 | if (*s == '{') { |
5830 | bracket = s; | |
5831 | s++; | |
5832 | } | |
5833 | else if (ck_uni) | |
5834 | check_uni(); | |
93a17b20 | 5835 | if (s < send) |
79072805 LW |
5836 | *d = *s++; |
5837 | d[1] = '\0'; | |
2b92dfce | 5838 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5839 | *d = toCTRL(*s); |
5840 | s++; | |
de3bb511 | 5841 | } |
79072805 | 5842 | if (bracket) { |
748a9306 | 5843 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5844 | while (s < send) { |
5845 | char ch = *s++; | |
5846 | if (ch != ' ' && ch != '\t') { | |
5847 | *d = ch; | |
5848 | break; | |
5849 | } | |
5850 | } | |
748a9306 | 5851 | } |
7e2040f0 | 5852 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 5853 | d++; |
a0ed51b3 LW |
5854 | if (UTF) { |
5855 | e = s; | |
7e2040f0 | 5856 | while (e < send && isALNUM_lazy_if(e,UTF) || *e == ':') { |
a0ed51b3 | 5857 | e += UTF8SKIP(e); |
dfe13c55 | 5858 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5859 | e += UTF8SKIP(e); |
5860 | } | |
5861 | Copy(s, d, e - s, char); | |
5862 | d += e - s; | |
5863 | s = e; | |
5864 | } | |
5865 | else { | |
2b92dfce | 5866 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5867 | *d++ = *s++; |
2b92dfce | 5868 | if (d >= e) |
cea2e8a9 | 5869 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5870 | } |
79072805 | 5871 | *d = '\0'; |
748a9306 | 5872 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5873 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5874 | dTHR; /* only for ckWARN */ |
599cee73 | 5875 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5876 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5877 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5878 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5879 | funny, dest, brack, funny, dest, brack); |
5880 | } | |
79072805 | 5881 | bracket++; |
a0be28da | 5882 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5883 | return s; |
5884 | } | |
2b92dfce GS |
5885 | } |
5886 | /* Handle extended ${^Foo} variables | |
5887 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5888 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5889 | && isALNUM(*s)) | |
5890 | { | |
5891 | d++; | |
5892 | while (isALNUM(*s) && d < e) { | |
5893 | *d++ = *s++; | |
5894 | } | |
5895 | if (d >= e) | |
cea2e8a9 | 5896 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5897 | *d = '\0'; |
79072805 LW |
5898 | } |
5899 | if (*s == '}') { | |
5900 | s++; | |
3280af22 NIS |
5901 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5902 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5903 | if (funny == '#') |
5904 | funny = '@'; | |
d008e5eb GS |
5905 | if (PL_lex_state == LEX_NORMAL) { |
5906 | dTHR; /* only for ckWARN */ | |
5907 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5908 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5909 | { |
cea2e8a9 | 5910 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5911 | "Ambiguous use of %c{%s} resolved to %c%s", |
5912 | funny, dest, funny, dest); | |
5913 | } | |
5914 | } | |
79072805 LW |
5915 | } |
5916 | else { | |
5917 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5918 | *dest = '\0'; |
79072805 LW |
5919 | } |
5920 | } | |
3280af22 NIS |
5921 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5922 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5923 | return s; |
5924 | } | |
5925 | ||
cea2e8a9 GS |
5926 | void |
5927 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5928 | { |
bbce6d69 | 5929 | if (ch == 'i') |
a0d0e21e | 5930 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5931 | else if (ch == 'g') |
5932 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5933 | else if (ch == 'c') |
5934 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5935 | else if (ch == 'o') |
5936 | *pmfl |= PMf_KEEP; | |
5937 | else if (ch == 'm') | |
5938 | *pmfl |= PMf_MULTILINE; | |
5939 | else if (ch == 's') | |
5940 | *pmfl |= PMf_SINGLELINE; | |
5941 | else if (ch == 'x') | |
5942 | *pmfl |= PMf_EXTENDED; | |
5943 | } | |
378cc40b | 5944 | |
76e3520e | 5945 | STATIC char * |
cea2e8a9 | 5946 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5947 | { |
79072805 LW |
5948 | PMOP *pm; |
5949 | char *s; | |
378cc40b | 5950 | |
09bef843 | 5951 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5952 | if (!s) { |
3280af22 NIS |
5953 | if (PL_lex_stuff) |
5954 | SvREFCNT_dec(PL_lex_stuff); | |
5955 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5956 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5957 | } |
bbce6d69 | 5958 | |
8782bef2 | 5959 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5960 | if (PL_multi_open == '?') |
79072805 | 5961 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5962 | if(type == OP_QR) { |
5963 | while (*s && strchr("iomsx", *s)) | |
5964 | pmflag(&pm->op_pmflags,*s++); | |
5965 | } | |
5966 | else { | |
5967 | while (*s && strchr("iogcmsx", *s)) | |
5968 | pmflag(&pm->op_pmflags,*s++); | |
5969 | } | |
4633a7c4 | 5970 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5971 | |
3280af22 | 5972 | PL_lex_op = (OP*)pm; |
79072805 | 5973 | yylval.ival = OP_MATCH; |
378cc40b LW |
5974 | return s; |
5975 | } | |
5976 | ||
76e3520e | 5977 | STATIC char * |
cea2e8a9 | 5978 | S_scan_subst(pTHX_ char *start) |
79072805 | 5979 | { |
a0d0e21e | 5980 | register char *s; |
79072805 | 5981 | register PMOP *pm; |
4fdae800 | 5982 | I32 first_start; |
79072805 LW |
5983 | I32 es = 0; |
5984 | ||
79072805 LW |
5985 | yylval.ival = OP_NULL; |
5986 | ||
09bef843 | 5987 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5988 | |
5989 | if (!s) { | |
3280af22 NIS |
5990 | if (PL_lex_stuff) |
5991 | SvREFCNT_dec(PL_lex_stuff); | |
5992 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5993 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5994 | } |
79072805 | 5995 | |
3280af22 | 5996 | if (s[-1] == PL_multi_open) |
79072805 LW |
5997 | s--; |
5998 | ||
3280af22 | 5999 | first_start = PL_multi_start; |
09bef843 | 6000 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6001 | if (!s) { |
3280af22 NIS |
6002 | if (PL_lex_stuff) |
6003 | SvREFCNT_dec(PL_lex_stuff); | |
6004 | PL_lex_stuff = Nullsv; | |
6005 | if (PL_lex_repl) | |
6006 | SvREFCNT_dec(PL_lex_repl); | |
6007 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6008 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6009 | } |
3280af22 | 6010 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6011 | |
79072805 | 6012 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6013 | while (*s) { |
a687059c LW |
6014 | if (*s == 'e') { |
6015 | s++; | |
2f3197b3 | 6016 | es++; |
a687059c | 6017 | } |
b3eb6a9b | 6018 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6019 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6020 | else |
6021 | break; | |
378cc40b | 6022 | } |
79072805 LW |
6023 | |
6024 | if (es) { | |
6025 | SV *repl; | |
0244c3a4 GS |
6026 | PL_sublex_info.super_bufptr = s; |
6027 | PL_sublex_info.super_bufend = PL_bufend; | |
6028 | PL_multi_end = 0; | |
79072805 | 6029 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6030 | repl = newSVpvn("",0); |
463ee0b2 | 6031 | while (es-- > 0) |
a0d0e21e | 6032 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6033 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6034 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6035 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6036 | SvEVALED_on(repl); |
3280af22 NIS |
6037 | SvREFCNT_dec(PL_lex_repl); |
6038 | PL_lex_repl = repl; | |
378cc40b | 6039 | } |
79072805 | 6040 | |
4633a7c4 | 6041 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6042 | PL_lex_op = (OP*)pm; |
79072805 | 6043 | yylval.ival = OP_SUBST; |
378cc40b LW |
6044 | return s; |
6045 | } | |
6046 | ||
76e3520e | 6047 | STATIC char * |
cea2e8a9 | 6048 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6049 | { |
a0d0e21e | 6050 | register char* s; |
11343788 | 6051 | OP *o; |
79072805 LW |
6052 | short *tbl; |
6053 | I32 squash; | |
a0ed51b3 | 6054 | I32 del; |
79072805 | 6055 | I32 complement; |
a0ed51b3 LW |
6056 | I32 utf8; |
6057 | I32 count = 0; | |
79072805 LW |
6058 | |
6059 | yylval.ival = OP_NULL; | |
6060 | ||
09bef843 | 6061 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6062 | if (!s) { |
3280af22 NIS |
6063 | if (PL_lex_stuff) |
6064 | SvREFCNT_dec(PL_lex_stuff); | |
6065 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6066 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 6067 | } |
3280af22 | 6068 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6069 | s--; |
6070 | ||
09bef843 | 6071 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6072 | if (!s) { |
3280af22 NIS |
6073 | if (PL_lex_stuff) |
6074 | SvREFCNT_dec(PL_lex_stuff); | |
6075 | PL_lex_stuff = Nullsv; | |
6076 | if (PL_lex_repl) | |
6077 | SvREFCNT_dec(PL_lex_repl); | |
6078 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6079 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6080 | } |
79072805 | 6081 | |
a0ed51b3 LW |
6082 | if (UTF) { |
6083 | o = newSVOP(OP_TRANS, 0, 0); | |
6084 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
6085 | } | |
6086 | else { | |
6087 | New(803,tbl,256,short); | |
6088 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
6089 | utf8 = 0; | |
6090 | } | |
2f3197b3 | 6091 | |
a0ed51b3 LW |
6092 | complement = del = squash = 0; |
6093 | while (strchr("cdsCU", *s)) { | |
395c3793 | 6094 | if (*s == 'c') |
79072805 | 6095 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6096 | else if (*s == 'd') |
a0ed51b3 LW |
6097 | del = OPpTRANS_DELETE; |
6098 | else if (*s == 's') | |
79072805 | 6099 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
6100 | else { |
6101 | switch (count++) { | |
6102 | case 0: | |
6103 | if (*s == 'C') | |
6104 | utf8 &= ~OPpTRANS_FROM_UTF; | |
6105 | else | |
6106 | utf8 |= OPpTRANS_FROM_UTF; | |
6107 | break; | |
6108 | case 1: | |
6109 | if (*s == 'C') | |
6110 | utf8 &= ~OPpTRANS_TO_UTF; | |
6111 | else | |
6112 | utf8 |= OPpTRANS_TO_UTF; | |
6113 | break; | |
6114 | default: | |
cea2e8a9 | 6115 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6116 | } |
6117 | } | |
395c3793 LW |
6118 | s++; |
6119 | } | |
a0ed51b3 | 6120 | o->op_private = del|squash|complement|utf8; |
79072805 | 6121 | |
3280af22 | 6122 | PL_lex_op = o; |
79072805 LW |
6123 | yylval.ival = OP_TRANS; |
6124 | return s; | |
6125 | } | |
6126 | ||
76e3520e | 6127 | STATIC char * |
cea2e8a9 | 6128 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6129 | { |
11343788 | 6130 | dTHR; |
79072805 LW |
6131 | SV *herewas; |
6132 | I32 op_type = OP_SCALAR; | |
6133 | I32 len; | |
6134 | SV *tmpstr; | |
6135 | char term; | |
6136 | register char *d; | |
fc36a67e | 6137 | register char *e; |
4633a7c4 | 6138 | char *peek; |
3280af22 | 6139 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6140 | |
6141 | s += 2; | |
3280af22 NIS |
6142 | d = PL_tokenbuf; |
6143 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6144 | if (!outer) |
79072805 | 6145 | *d++ = '\n'; |
4633a7c4 LW |
6146 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
6147 | if (*peek && strchr("`'\"",*peek)) { | |
6148 | s = peek; | |
79072805 | 6149 | term = *s++; |
3280af22 | 6150 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6151 | d += len; |
3280af22 | 6152 | if (s < PL_bufend) |
79072805 | 6153 | s++; |
79072805 LW |
6154 | } |
6155 | else { | |
6156 | if (*s == '\\') | |
6157 | s++, term = '\''; | |
6158 | else | |
6159 | term = '"'; | |
7e2040f0 | 6160 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6161 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6162 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6163 | if (d < e) |
6164 | *d++ = *s; | |
6165 | } | |
6166 | } | |
3280af22 | 6167 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6168 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6169 | *d++ = '\n'; |
6170 | *d = '\0'; | |
3280af22 | 6171 | len = d - PL_tokenbuf; |
6a27c188 | 6172 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6173 | d = strchr(s, '\r'); |
6174 | if (d) { | |
6175 | char *olds = s; | |
6176 | s = d; | |
3280af22 | 6177 | while (s < PL_bufend) { |
f63a84b2 LW |
6178 | if (*s == '\r') { |
6179 | *d++ = '\n'; | |
6180 | if (*++s == '\n') | |
6181 | s++; | |
6182 | } | |
6183 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6184 | *d++ = *s++; | |
6185 | s++; | |
6186 | } | |
6187 | else | |
6188 | *d++ = *s++; | |
6189 | } | |
6190 | *d = '\0'; | |
3280af22 NIS |
6191 | PL_bufend = d; |
6192 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6193 | s = olds; |
6194 | } | |
6195 | #endif | |
79072805 | 6196 | d = "\n"; |
3280af22 | 6197 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6198 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6199 | else |
79cb57f6 | 6200 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6201 | s += SvCUR(herewas); |
748a9306 | 6202 | |
8d6dde3e | 6203 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6204 | sv_upgrade(tmpstr, SVt_PVIV); |
6205 | if (term == '\'') { | |
79072805 | 6206 | op_type = OP_CONST; |
748a9306 LW |
6207 | SvIVX(tmpstr) = -1; |
6208 | } | |
6209 | else if (term == '`') { | |
79072805 | 6210 | op_type = OP_BACKTICK; |
748a9306 LW |
6211 | SvIVX(tmpstr) = '\\'; |
6212 | } | |
79072805 LW |
6213 | |
6214 | CLINE; | |
57843af0 | 6215 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6216 | PL_multi_open = PL_multi_close = '<'; |
6217 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6218 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6219 | char *bufptr = PL_sublex_info.super_bufptr; | |
6220 | char *bufend = PL_sublex_info.super_bufend; | |
6221 | char *olds = s - SvCUR(herewas); | |
6222 | s = strchr(bufptr, '\n'); | |
6223 | if (!s) | |
6224 | s = bufend; | |
6225 | d = s; | |
6226 | while (s < bufend && | |
6227 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6228 | if (*s++ == '\n') | |
57843af0 | 6229 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6230 | } |
6231 | if (s >= bufend) { | |
57843af0 | 6232 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6233 | missingterm(PL_tokenbuf); |
6234 | } | |
6235 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6236 | sv_setpvn(tmpstr,d+1,s-d); | |
6237 | s += len - 1; | |
6238 | sv_catpvn(herewas,s,bufend-s); | |
6239 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6240 | ||
6241 | s = olds; | |
6242 | goto retval; | |
6243 | } | |
6244 | else if (!outer) { | |
79072805 | 6245 | d = s; |
3280af22 NIS |
6246 | while (s < PL_bufend && |
6247 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6248 | if (*s++ == '\n') |
57843af0 | 6249 | CopLINE_inc(PL_curcop); |
79072805 | 6250 | } |
3280af22 | 6251 | if (s >= PL_bufend) { |
57843af0 | 6252 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6253 | missingterm(PL_tokenbuf); |
79072805 LW |
6254 | } |
6255 | sv_setpvn(tmpstr,d+1,s-d); | |
6256 | s += len - 1; | |
57843af0 | 6257 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6258 | |
3280af22 NIS |
6259 | sv_catpvn(herewas,s,PL_bufend-s); |
6260 | sv_setsv(PL_linestr,herewas); | |
6261 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6262 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6263 | } |
6264 | else | |
6265 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6266 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6267 | if (!outer || |
3280af22 | 6268 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6269 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6270 | missingterm(PL_tokenbuf); |
79072805 | 6271 | } |
57843af0 | 6272 | CopLINE_inc(PL_curcop); |
3280af22 | 6273 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6274 | #ifndef PERL_STRICT_CR |
3280af22 | 6275 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6276 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6277 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6278 | { |
3280af22 NIS |
6279 | PL_bufend[-2] = '\n'; |
6280 | PL_bufend--; | |
6281 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6282 | } |
3280af22 NIS |
6283 | else if (PL_bufend[-1] == '\r') |
6284 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6285 | } |
3280af22 NIS |
6286 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6287 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6288 | #endif |
3280af22 | 6289 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6290 | SV *sv = NEWSV(88,0); |
6291 | ||
93a17b20 | 6292 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6293 | sv_setsv(sv,PL_linestr); |
57843af0 | 6294 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6295 | } |
3280af22 NIS |
6296 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6297 | s = PL_bufend - 1; | |
79072805 | 6298 | *s = ' '; |
3280af22 NIS |
6299 | sv_catsv(PL_linestr,herewas); |
6300 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6301 | } |
6302 | else { | |
3280af22 NIS |
6303 | s = PL_bufend; |
6304 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6305 | } |
6306 | } | |
79072805 | 6307 | s++; |
0244c3a4 | 6308 | retval: |
57843af0 | 6309 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6310 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6311 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6312 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6313 | } |
8990e307 | 6314 | SvREFCNT_dec(herewas); |
3280af22 | 6315 | PL_lex_stuff = tmpstr; |
79072805 LW |
6316 | yylval.ival = op_type; |
6317 | return s; | |
6318 | } | |
6319 | ||
02aa26ce NT |
6320 | /* scan_inputsymbol |
6321 | takes: current position in input buffer | |
6322 | returns: new position in input buffer | |
6323 | side-effects: yylval and lex_op are set. | |
6324 | ||
6325 | This code handles: | |
6326 | ||
6327 | <> read from ARGV | |
6328 | <FH> read from filehandle | |
6329 | <pkg::FH> read from package qualified filehandle | |
6330 | <pkg'FH> read from package qualified filehandle | |
6331 | <$fh> read from filehandle in $fh | |
6332 | <*.h> filename glob | |
6333 | ||
6334 | */ | |
6335 | ||
76e3520e | 6336 | STATIC char * |
cea2e8a9 | 6337 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6338 | { |
02aa26ce | 6339 | register char *s = start; /* current position in buffer */ |
79072805 | 6340 | register char *d; |
fc36a67e | 6341 | register char *e; |
1b420867 | 6342 | char *end; |
79072805 LW |
6343 | I32 len; |
6344 | ||
3280af22 NIS |
6345 | d = PL_tokenbuf; /* start of temp holding space */ |
6346 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6347 | end = strchr(s, '\n'); |
6348 | if (!end) | |
6349 | end = PL_bufend; | |
6350 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6351 | |
6352 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6353 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6354 | */ |
6355 | ||
3280af22 | 6356 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6357 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6358 | if (s >= end) |
cea2e8a9 | 6359 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6360 | |
fc36a67e | 6361 | s++; |
02aa26ce NT |
6362 | |
6363 | /* check for <$fh> | |
6364 | Remember, only scalar variables are interpreted as filehandles by | |
6365 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6366 | treated as a glob() call. | |
6367 | This code makes use of the fact that except for the $ at the front, | |
6368 | a scalar variable and a filehandle look the same. | |
6369 | */ | |
4633a7c4 | 6370 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6371 | |
6372 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6373 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6374 | d++; |
02aa26ce NT |
6375 | |
6376 | /* If we've tried to read what we allow filehandles to look like, and | |
6377 | there's still text left, then it must be a glob() and not a getline. | |
6378 | Use scan_str to pull out the stuff between the <> and treat it | |
6379 | as nothing more than a string. | |
6380 | */ | |
6381 | ||
3280af22 | 6382 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6383 | yylval.ival = OP_GLOB; |
6384 | set_csh(); | |
09bef843 | 6385 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6386 | if (!s) |
cea2e8a9 | 6387 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6388 | return s; |
6389 | } | |
395c3793 | 6390 | else { |
02aa26ce | 6391 | /* we're in a filehandle read situation */ |
3280af22 | 6392 | d = PL_tokenbuf; |
02aa26ce NT |
6393 | |
6394 | /* turn <> into <ARGV> */ | |
79072805 LW |
6395 | if (!len) |
6396 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6397 | |
6398 | /* if <$fh>, create the ops to turn the variable into a | |
6399 | filehandle | |
6400 | */ | |
79072805 | 6401 | if (*d == '$') { |
a0d0e21e | 6402 | I32 tmp; |
02aa26ce NT |
6403 | |
6404 | /* try to find it in the pad for this block, otherwise find | |
6405 | add symbol table ops | |
6406 | */ | |
11343788 MB |
6407 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6408 | OP *o = newOP(OP_PADSV, 0); | |
6409 | o->op_targ = tmp; | |
f5284f61 | 6410 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6411 | } |
6412 | else { | |
6413 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6414 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6415 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6416 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6417 | } |
f5284f61 IZ |
6418 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6419 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6420 | yylval.ival = OP_NULL; |
6421 | } | |
02aa26ce NT |
6422 | |
6423 | /* If it's none of the above, it must be a literal filehandle | |
6424 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6425 | else { |
85e6fe83 | 6426 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6427 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6428 | yylval.ival = OP_NULL; |
6429 | } | |
6430 | } | |
02aa26ce | 6431 | |
79072805 LW |
6432 | return s; |
6433 | } | |
6434 | ||
02aa26ce NT |
6435 | |
6436 | /* scan_str | |
6437 | takes: start position in buffer | |
09bef843 SB |
6438 | keep_quoted preserve \ on the embedded delimiter(s) |
6439 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6440 | returns: position to continue reading from buffer |
6441 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6442 | updates the read buffer. | |
6443 | ||
6444 | This subroutine pulls a string out of the input. It is called for: | |
6445 | q single quotes q(literal text) | |
6446 | ' single quotes 'literal text' | |
6447 | qq double quotes qq(interpolate $here please) | |
6448 | " double quotes "interpolate $here please" | |
6449 | qx backticks qx(/bin/ls -l) | |
6450 | ` backticks `/bin/ls -l` | |
6451 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6452 | m// regexp match m/this/ | |
6453 | s/// regexp substitute s/this/that/ | |
6454 | tr/// string transliterate tr/this/that/ | |
6455 | y/// string transliterate y/this/that/ | |
6456 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6457 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6458 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6459 | ||
6460 | In most of these cases (all but <>, patterns and transliterate) | |
6461 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6462 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6463 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6464 | calls scan_str(). | |
6465 | ||
6466 | It skips whitespace before the string starts, and treats the first | |
6467 | character as the delimiter. If the delimiter is one of ([{< then | |
6468 | the corresponding "close" character )]}> is used as the closing | |
6469 | delimiter. It allows quoting of delimiters, and if the string has | |
6470 | balanced delimiters ([{<>}]) it allows nesting. | |
6471 | ||
6472 | The lexer always reads these strings into lex_stuff, except in the | |
6473 | case of the operators which take *two* arguments (s/// and tr///) | |
6474 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6475 | arg to s or tr) and if so puts the string into lex_repl. | |
6476 | ||
6477 | */ | |
6478 | ||
76e3520e | 6479 | STATIC char * |
09bef843 | 6480 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6481 | { |
11343788 | 6482 | dTHR; |
02aa26ce NT |
6483 | SV *sv; /* scalar value: string */ |
6484 | char *tmps; /* temp string, used for delimiter matching */ | |
6485 | register char *s = start; /* current position in the buffer */ | |
6486 | register char term; /* terminating character */ | |
6487 | register char *to; /* current position in the sv's data */ | |
6488 | I32 brackets = 1; /* bracket nesting level */ | |
b1c7b182 | 6489 | bool has_utf = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6490 | |
6491 | /* skip space before the delimiter */ | |
fb73857a | 6492 | if (isSPACE(*s)) |
6493 | s = skipspace(s); | |
02aa26ce NT |
6494 | |
6495 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6496 | CLINE; |
02aa26ce NT |
6497 | |
6498 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6499 | term = *s; |
b1c7b182 GS |
6500 | if ((term & 0x80) && UTF) |
6501 | has_utf = TRUE; | |
6502 | ||
02aa26ce | 6503 | /* mark where we are */ |
57843af0 | 6504 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6505 | PL_multi_open = term; |
02aa26ce NT |
6506 | |
6507 | /* find corresponding closing delimiter */ | |
93a17b20 | 6508 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6509 | term = tmps[5]; |
3280af22 | 6510 | PL_multi_close = term; |
79072805 | 6511 | |
02aa26ce | 6512 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6513 | assuming. 79 is the SV's initial length. What a random number. */ |
6514 | sv = NEWSV(87,79); | |
ed6116ce LW |
6515 | sv_upgrade(sv, SVt_PVIV); |
6516 | SvIVX(sv) = term; | |
a0d0e21e | 6517 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6518 | |
6519 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6520 | if (keep_delims) |
6521 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6522 | s++; |
6523 | for (;;) { | |
02aa26ce | 6524 | /* extend sv if need be */ |
3280af22 | 6525 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6526 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6527 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6528 | |
02aa26ce | 6529 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6530 | if (PL_multi_open == PL_multi_close) { |
6531 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6532 | /* embedded newlines increment the current line number */ |
3280af22 | 6533 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6534 | CopLINE_inc(PL_curcop); |
02aa26ce | 6535 | /* handle quoted delimiters */ |
3280af22 | 6536 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6537 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6538 | s++; |
02aa26ce | 6539 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6540 | else |
6541 | *to++ = *s++; | |
6542 | } | |
02aa26ce NT |
6543 | /* terminate when run out of buffer (the for() condition), or |
6544 | have found the terminator */ | |
93a17b20 LW |
6545 | else if (*s == term) |
6546 | break; | |
b1c7b182 GS |
6547 | else if (!has_utf && (*s & 0x80) && UTF) |
6548 | has_utf = TRUE; | |
93a17b20 LW |
6549 | *to = *s; |
6550 | } | |
6551 | } | |
02aa26ce NT |
6552 | |
6553 | /* if the terminator isn't the same as the start character (e.g., | |
6554 | matched brackets), we have to allow more in the quoting, and | |
6555 | be prepared for nested brackets. | |
6556 | */ | |
93a17b20 | 6557 | else { |
02aa26ce | 6558 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6559 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6560 | /* embedded newlines increment the line count */ |
3280af22 | 6561 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6562 | CopLINE_inc(PL_curcop); |
02aa26ce | 6563 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6564 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6565 | if (!keep_quoted && |
6566 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6567 | s++; |
6568 | else | |
6569 | *to++ = *s++; | |
6570 | } | |
02aa26ce | 6571 | /* allow nested opens and closes */ |
3280af22 | 6572 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6573 | break; |
3280af22 | 6574 | else if (*s == PL_multi_open) |
93a17b20 | 6575 | brackets++; |
b1c7b182 GS |
6576 | else if (!has_utf && (*s & 0x80) && UTF) |
6577 | has_utf = TRUE; | |
93a17b20 LW |
6578 | *to = *s; |
6579 | } | |
6580 | } | |
02aa26ce | 6581 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6582 | *to = '\0'; |
463ee0b2 | 6583 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6584 | |
02aa26ce NT |
6585 | /* |
6586 | * this next chunk reads more into the buffer if we're not done yet | |
6587 | */ | |
6588 | ||
b1c7b182 GS |
6589 | if (s < PL_bufend) |
6590 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6591 | |
6a27c188 | 6592 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6593 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6594 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6595 | (to[-2] == '\n' && to[-1] == '\r')) | |
6596 | { | |
f63a84b2 LW |
6597 | to[-2] = '\n'; |
6598 | to--; | |
6599 | SvCUR_set(sv, to - SvPVX(sv)); | |
6600 | } | |
6601 | else if (to[-1] == '\r') | |
6602 | to[-1] = '\n'; | |
6603 | } | |
6604 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6605 | to[-1] = '\n'; | |
6606 | #endif | |
6607 | ||
02aa26ce NT |
6608 | /* if we're out of file, or a read fails, bail and reset the current |
6609 | line marker so we can report where the unterminated string began | |
6610 | */ | |
3280af22 NIS |
6611 | if (!PL_rsfp || |
6612 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6613 | sv_free(sv); |
57843af0 | 6614 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6615 | return Nullch; |
6616 | } | |
02aa26ce | 6617 | /* we read a line, so increment our line counter */ |
57843af0 | 6618 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6619 | |
02aa26ce | 6620 | /* update debugger info */ |
3280af22 | 6621 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6622 | SV *sv = NEWSV(88,0); |
6623 | ||
93a17b20 | 6624 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6625 | sv_setsv(sv,PL_linestr); |
57843af0 | 6626 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6627 | } |
a0ed51b3 | 6628 | |
3280af22 NIS |
6629 | /* having changed the buffer, we must update PL_bufend */ |
6630 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6631 | } |
02aa26ce NT |
6632 | |
6633 | /* at this point, we have successfully read the delimited string */ | |
6634 | ||
09bef843 SB |
6635 | if (keep_delims) |
6636 | sv_catpvn(sv, s, 1); | |
b1c7b182 GS |
6637 | if (has_utf) |
6638 | SvUTF8_on(sv); | |
57843af0 | 6639 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6640 | s++; |
02aa26ce NT |
6641 | |
6642 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6643 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6644 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6645 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6646 | } |
02aa26ce NT |
6647 | |
6648 | /* decide whether this is the first or second quoted string we've read | |
6649 | for this op | |
6650 | */ | |
6651 | ||
3280af22 NIS |
6652 | if (PL_lex_stuff) |
6653 | PL_lex_repl = sv; | |
79072805 | 6654 | else |
3280af22 | 6655 | PL_lex_stuff = sv; |
378cc40b LW |
6656 | return s; |
6657 | } | |
6658 | ||
02aa26ce NT |
6659 | /* |
6660 | scan_num | |
6661 | takes: pointer to position in buffer | |
6662 | returns: pointer to new position in buffer | |
6663 | side-effects: builds ops for the constant in yylval.op | |
6664 | ||
6665 | Read a number in any of the formats that Perl accepts: | |
6666 | ||
4f19785b | 6667 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6668 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6669 | ||
6670 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6671 | underbars before a decimal point must be at three digit intervals. | |
6672 | ||
3280af22 | 6673 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6674 | thing it reads. |
6675 | ||
6676 | If it reads a number without a decimal point or an exponent, it will | |
6677 | try converting the number to an integer and see if it can do so | |
6678 | without loss of precision. | |
6679 | */ | |
6680 | ||
378cc40b | 6681 | char * |
864dbfa3 | 6682 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6683 | { |
02aa26ce NT |
6684 | register char *s = start; /* current position in buffer */ |
6685 | register char *d; /* destination in temp buffer */ | |
6686 | register char *e; /* end of temp buffer */ | |
b8403495 | 6687 | IV tryiv; /* used to see if it can be an IV */ |
65202027 | 6688 | NV value; /* number read, as a double */ |
a7cb1f99 | 6689 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6690 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6691 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6692 | static char number_too_long[] = "Number too long"; |
378cc40b | 6693 | |
02aa26ce NT |
6694 | /* We use the first character to decide what type of number this is */ |
6695 | ||
378cc40b | 6696 | switch (*s) { |
79072805 | 6697 | default: |
cea2e8a9 | 6698 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6699 | |
6700 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6701 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6702 | case '0': |
6703 | { | |
02aa26ce NT |
6704 | /* variables: |
6705 | u holds the "number so far" | |
4f19785b WSI |
6706 | shift the power of 2 of the base |
6707 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6708 | overflowed was the number more than we can hold? |
6709 | ||
6710 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6711 | we in octal/hex/binary?" indicator to disallow hex characters |
6712 | when in octal mode. | |
02aa26ce | 6713 | */ |
f248d071 | 6714 | dTHR; |
9e24b6e2 JH |
6715 | NV n = 0.0; |
6716 | UV u = 0; | |
79072805 | 6717 | I32 shift; |
9e24b6e2 JH |
6718 | bool overflowed = FALSE; |
6719 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6720 | static char* bases[5] = { "", "binary", "", "octal", | |
6721 | "hexadecimal" }; | |
6722 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6723 | "Hexadecimal" }; | |
6724 | static char *maxima[5] = { "", | |
6725 | "0b11111111111111111111111111111111", | |
6726 | "", | |
893fe2c2 | 6727 | "037777777777", |
9e24b6e2 JH |
6728 | "0xffffffff" }; |
6729 | char *base, *Base, *max; | |
378cc40b | 6730 | |
02aa26ce | 6731 | /* check for hex */ |
378cc40b LW |
6732 | if (s[1] == 'x') { |
6733 | shift = 4; | |
6734 | s += 2; | |
4f19785b WSI |
6735 | } else if (s[1] == 'b') { |
6736 | shift = 1; | |
6737 | s += 2; | |
378cc40b | 6738 | } |
02aa26ce | 6739 | /* check for a decimal in disguise */ |
b78218b7 | 6740 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6741 | goto decimal; |
02aa26ce | 6742 | /* so it must be octal */ |
378cc40b LW |
6743 | else |
6744 | shift = 3; | |
9e24b6e2 JH |
6745 | |
6746 | base = bases[shift]; | |
6747 | Base = Bases[shift]; | |
6748 | max = maxima[shift]; | |
02aa26ce | 6749 | |
4f19785b | 6750 | /* read the rest of the number */ |
378cc40b | 6751 | for (;;) { |
9e24b6e2 | 6752 | /* x is used in the overflow test, |
893fe2c2 | 6753 | b is the digit we're adding on. */ |
9e24b6e2 | 6754 | UV x, b; |
55497cff | 6755 | |
378cc40b | 6756 | switch (*s) { |
02aa26ce NT |
6757 | |
6758 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6759 | default: |
6760 | goto out; | |
02aa26ce NT |
6761 | |
6762 | /* _ are ignored */ | |
de3bb511 LW |
6763 | case '_': |
6764 | s++; | |
6765 | break; | |
02aa26ce NT |
6766 | |
6767 | /* 8 and 9 are not octal */ | |
378cc40b | 6768 | case '8': case '9': |
4f19785b | 6769 | if (shift == 3) |
cea2e8a9 | 6770 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6771 | /* FALL THROUGH */ |
02aa26ce NT |
6772 | |
6773 | /* octal digits */ | |
4f19785b | 6774 | case '2': case '3': case '4': |
378cc40b | 6775 | case '5': case '6': case '7': |
4f19785b | 6776 | if (shift == 1) |
cea2e8a9 | 6777 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6778 | /* FALL THROUGH */ |
6779 | ||
6780 | case '0': case '1': | |
02aa26ce | 6781 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6782 | goto digit; |
02aa26ce NT |
6783 | |
6784 | /* hex digits */ | |
378cc40b LW |
6785 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6786 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6787 | /* make sure they said 0x */ |
378cc40b LW |
6788 | if (shift != 4) |
6789 | goto out; | |
55497cff | 6790 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6791 | |
6792 | /* Prepare to put the digit we have onto the end | |
6793 | of the number so far. We check for overflows. | |
6794 | */ | |
6795 | ||
55497cff | 6796 | digit: |
9e24b6e2 JH |
6797 | if (!overflowed) { |
6798 | x = u << shift; /* make room for the digit */ | |
6799 | ||
6800 | if ((x >> shift) != u | |
6801 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6802 | dTHR; | |
6803 | overflowed = TRUE; | |
6804 | n = (NV) u; | |
767a6a26 PM |
6805 | if (ckWARN_d(WARN_OVERFLOW)) |
6806 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6807 | "Integer overflow in %s number", |
6808 | base); | |
6809 | } else | |
6810 | u = x | b; /* add the digit to the end */ | |
6811 | } | |
6812 | if (overflowed) { | |
6813 | n *= nvshift[shift]; | |
6814 | /* If an NV has not enough bits in its | |
6815 | * mantissa to represent an UV this summing of | |
6816 | * small low-order numbers is a waste of time | |
6817 | * (because the NV cannot preserve the | |
6818 | * low-order bits anyway): we could just | |
6819 | * remember when did we overflow and in the | |
6820 | * end just multiply n by the right | |
6821 | * amount. */ | |
6822 | n += (NV) b; | |
55497cff | 6823 | } |
378cc40b LW |
6824 | break; |
6825 | } | |
6826 | } | |
02aa26ce NT |
6827 | |
6828 | /* if we get here, we had success: make a scalar value from | |
6829 | the number. | |
6830 | */ | |
378cc40b | 6831 | out: |
79072805 | 6832 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6833 | if (overflowed) { |
6834 | dTHR; | |
767a6a26 PM |
6835 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6836 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6837 | "%s number > %s non-portable", |
6838 | Base, max); | |
6839 | sv_setnv(sv, n); | |
6840 | } | |
6841 | else { | |
15041a67 | 6842 | #if UVSIZE > 4 |
9e24b6e2 | 6843 | dTHR; |
767a6a26 PM |
6844 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6845 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6846 | "%s number > %s non-portable", |
6847 | Base, max); | |
2cc4c2dc | 6848 | #endif |
9e24b6e2 JH |
6849 | sv_setuv(sv, u); |
6850 | } | |
2cc4c2dc | 6851 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6852 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6853 | } |
6854 | break; | |
02aa26ce NT |
6855 | |
6856 | /* | |
6857 | handle decimal numbers. | |
6858 | we're also sent here when we read a 0 as the first digit | |
6859 | */ | |
378cc40b LW |
6860 | case '1': case '2': case '3': case '4': case '5': |
6861 | case '6': case '7': case '8': case '9': case '.': | |
6862 | decimal: | |
3280af22 NIS |
6863 | d = PL_tokenbuf; |
6864 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6865 | floatit = FALSE; |
02aa26ce NT |
6866 | |
6867 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6868 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6869 | /* skip underscores, checking for misplaced ones |
6870 | if -w is on | |
6871 | */ | |
93a17b20 | 6872 | if (*s == '_') { |
d008e5eb | 6873 | dTHR; /* only for ckWARN */ |
599cee73 | 6874 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6875 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6876 | lastub = ++s; |
6877 | } | |
fc36a67e | 6878 | else { |
02aa26ce | 6879 | /* check for end of fixed-length buffer */ |
fc36a67e | 6880 | if (d >= e) |
cea2e8a9 | 6881 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6882 | /* if we're ok, copy the character */ |
378cc40b | 6883 | *d++ = *s++; |
fc36a67e | 6884 | } |
378cc40b | 6885 | } |
02aa26ce NT |
6886 | |
6887 | /* final misplaced underbar check */ | |
d008e5eb GS |
6888 | if (lastub && s - lastub != 3) { |
6889 | dTHR; | |
6890 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6891 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6892 | } |
02aa26ce NT |
6893 | |
6894 | /* read a decimal portion if there is one. avoid | |
6895 | 3..5 being interpreted as the number 3. followed | |
6896 | by .5 | |
6897 | */ | |
2f3197b3 | 6898 | if (*s == '.' && s[1] != '.') { |
79072805 | 6899 | floatit = TRUE; |
378cc40b | 6900 | *d++ = *s++; |
02aa26ce NT |
6901 | |
6902 | /* copy, ignoring underbars, until we run out of | |
6903 | digits. Note: no misplaced underbar checks! | |
6904 | */ | |
fc36a67e | 6905 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6906 | /* fixed length buffer check */ |
fc36a67e | 6907 | if (d >= e) |
cea2e8a9 | 6908 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6909 | if (*s != '_') |
6910 | *d++ = *s; | |
378cc40b | 6911 | } |
dd629d5b GS |
6912 | if (*s == '.' && isDIGIT(s[1])) { |
6913 | /* oops, it's really a v-string, but without the "v" */ | |
6914 | s = start - 1; | |
6915 | goto vstring; | |
6916 | } | |
378cc40b | 6917 | } |
02aa26ce NT |
6918 | |
6919 | /* read exponent part, if present */ | |
93a17b20 | 6920 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6921 | floatit = TRUE; |
6922 | s++; | |
02aa26ce NT |
6923 | |
6924 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6925 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6926 | |
6927 | /* allow positive or negative exponent */ | |
378cc40b LW |
6928 | if (*s == '+' || *s == '-') |
6929 | *d++ = *s++; | |
02aa26ce NT |
6930 | |
6931 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6932 | while (isDIGIT(*s)) { |
6933 | if (d >= e) | |
cea2e8a9 | 6934 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6935 | *d++ = *s++; |
fc36a67e | 6936 | } |
378cc40b | 6937 | } |
02aa26ce NT |
6938 | |
6939 | /* terminate the string */ | |
378cc40b | 6940 | *d = '\0'; |
02aa26ce NT |
6941 | |
6942 | /* make an sv from the string */ | |
79072805 | 6943 | sv = NEWSV(92,0); |
097ee67d JH |
6944 | |
6945 | value = Atof(PL_tokenbuf); | |
02aa26ce NT |
6946 | |
6947 | /* | |
6948 | See if we can make do with an integer value without loss of | |
6949 | precision. We use I_V to cast to an int, because some | |
6950 | compilers have issues. Then we try casting it back and see | |
6951 | if it was the same. We only do this if we know we | |
6952 | specifically read an integer. | |
6953 | ||
6954 | Note: if floatit is true, then we don't need to do the | |
6955 | conversion at all. | |
6956 | */ | |
1e422769 | 6957 | tryiv = I_V(value); |
65202027 | 6958 | if (!floatit && (NV)tryiv == value) |
1e422769 | 6959 | sv_setiv(sv, tryiv); |
2f3197b3 | 6960 | else |
1e422769 | 6961 | sv_setnv(sv, value); |
b8403495 JH |
6962 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
6963 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 6964 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
6965 | (floatit ? "float" : "integer"), |
6966 | sv, Nullsv, NULL); | |
378cc40b | 6967 | break; |
a7cb1f99 GS |
6968 | /* if it starts with a v, it could be a version number */ |
6969 | case 'v': | |
dd629d5b | 6970 | vstring: |
a7cb1f99 | 6971 | { |
a7cb1f99 GS |
6972 | char *pos = s; |
6973 | pos++; | |
dd629d5b | 6974 | while (isDIGIT(*pos) || *pos == '_') |
a7cb1f99 | 6975 | pos++; |
e526c9e6 | 6976 | if (!isALPHA(*pos)) { |
f83ee824 | 6977 | UV rev; |
560a288e | 6978 | U8 tmpbuf[UTF8_MAXLEN]; |
a7cb1f99 | 6979 | U8 *tmpend; |
3818b22b | 6980 | bool utf8 = FALSE; |
a7cb1f99 GS |
6981 | s++; /* get past 'v' */ |
6982 | ||
6983 | sv = NEWSV(92,5); | |
a7cb1f99 GS |
6984 | sv_setpvn(sv, "", 0); |
6985 | ||
e526c9e6 | 6986 | for (;;) { |
3cb0bbe5 GS |
6987 | if (*s == '0' && isDIGIT(s[1])) |
6988 | yyerror("Octal number in vector unsupported"); | |
dd629d5b GS |
6989 | rev = 0; |
6990 | { | |
6991 | /* this is atoi() that tolerates underscores */ | |
6992 | char *end = pos; | |
6993 | UV mult = 1; | |
6994 | while (--end >= s) { | |
6995 | UV orev; | |
6996 | if (*end == '_') | |
6997 | continue; | |
6998 | orev = rev; | |
6999 | rev += (*end - '0') * mult; | |
7000 | mult *= 10; | |
7001 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
7002 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
7003 | "Integer overflow in decimal number"); | |
7004 | } | |
7005 | } | |
e526c9e6 GS |
7006 | tmpend = uv_to_utf8(tmpbuf, rev); |
7007 | utf8 = utf8 || rev > 127; | |
7008 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
7009 | if (*pos == '.' && isDIGIT(pos[1])) | |
7010 | s = ++pos; | |
3818b22b | 7011 | else { |
e526c9e6 GS |
7012 | s = pos; |
7013 | break; | |
3818b22b | 7014 | } |
dd629d5b | 7015 | while (isDIGIT(*pos) || *pos == '_') |
e526c9e6 GS |
7016 | pos++; |
7017 | } | |
a7cb1f99 GS |
7018 | |
7019 | SvPOK_on(sv); | |
a7cb1f99 | 7020 | SvREADONLY_on(sv); |
560a288e | 7021 | if (utf8) { |
3818b22b | 7022 | SvUTF8_on(sv); |
560a288e GS |
7023 | sv_utf8_downgrade(sv, TRUE); |
7024 | } | |
a7cb1f99 GS |
7025 | } |
7026 | } | |
7027 | break; | |
79072805 | 7028 | } |
a687059c | 7029 | |
02aa26ce NT |
7030 | /* make the op for the constant and return */ |
7031 | ||
a7cb1f99 GS |
7032 | if (sv) |
7033 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
7034 | else | |
7035 | yylval.opval = Nullop; | |
a687059c | 7036 | |
378cc40b LW |
7037 | return s; |
7038 | } | |
7039 | ||
76e3520e | 7040 | STATIC char * |
cea2e8a9 | 7041 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7042 | { |
11343788 | 7043 | dTHR; |
79072805 | 7044 | register char *eol; |
378cc40b | 7045 | register char *t; |
79cb57f6 | 7046 | SV *stuff = newSVpvn("",0); |
79072805 | 7047 | bool needargs = FALSE; |
378cc40b | 7048 | |
79072805 | 7049 | while (!needargs) { |
85e6fe83 | 7050 | if (*s == '.' || *s == '}') { |
79072805 | 7051 | /*SUPPRESS 530*/ |
51882d45 GS |
7052 | #ifdef PERL_STRICT_CR |
7053 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
7054 | #else | |
7055 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
7056 | #endif | |
6a65c6a0 | 7057 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7058 | break; |
7059 | } | |
3280af22 | 7060 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7061 | eol = strchr(s,'\n'); |
0f85fab0 | 7062 | if (!eol++) |
3280af22 | 7063 | eol = PL_bufend; |
0f85fab0 LW |
7064 | } |
7065 | else | |
3280af22 | 7066 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7067 | if (*s != '#') { |
a0d0e21e LW |
7068 | for (t = s; t < eol; t++) { |
7069 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7070 | needargs = FALSE; | |
7071 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7072 | } |
a0d0e21e LW |
7073 | if (*t == '@' || *t == '^') |
7074 | needargs = TRUE; | |
378cc40b | 7075 | } |
a0d0e21e | 7076 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
7077 | #ifndef PERL_STRICT_CR |
7078 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
7079 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7080 | end[-2] = '\n'; | |
7081 | end[-1] = '\0'; | |
7082 | SvCUR(stuff)--; | |
7083 | } | |
7084 | #endif | |
79072805 LW |
7085 | } |
7086 | s = eol; | |
3280af22 NIS |
7087 | if (PL_rsfp) { |
7088 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7089 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7090 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 7091 | if (!s) { |
3280af22 | 7092 | s = PL_bufptr; |
79072805 | 7093 | yyerror("Format not terminated"); |
378cc40b LW |
7094 | break; |
7095 | } | |
378cc40b | 7096 | } |
463ee0b2 | 7097 | incline(s); |
79072805 | 7098 | } |
a0d0e21e LW |
7099 | enough: |
7100 | if (SvCUR(stuff)) { | |
3280af22 | 7101 | PL_expect = XTERM; |
79072805 | 7102 | if (needargs) { |
3280af22 NIS |
7103 | PL_lex_state = LEX_NORMAL; |
7104 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7105 | force_next(','); |
7106 | } | |
a0d0e21e | 7107 | else |
3280af22 NIS |
7108 | PL_lex_state = LEX_FORMLINE; |
7109 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7110 | force_next(THING); |
3280af22 | 7111 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7112 | force_next(LSTOP); |
378cc40b | 7113 | } |
79072805 | 7114 | else { |
8990e307 | 7115 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7116 | PL_lex_formbrack = 0; |
7117 | PL_bufptr = s; | |
79072805 LW |
7118 | } |
7119 | return s; | |
378cc40b | 7120 | } |
a687059c | 7121 | |
76e3520e | 7122 | STATIC void |
cea2e8a9 | 7123 | S_set_csh(pTHX) |
a687059c | 7124 | { |
ae986130 | 7125 | #ifdef CSH |
3280af22 NIS |
7126 | if (!PL_cshlen) |
7127 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7128 | #endif |
a687059c | 7129 | } |
463ee0b2 | 7130 | |
ba6d6ac9 | 7131 | I32 |
864dbfa3 | 7132 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7133 | { |
11343788 | 7134 | dTHR; |
3280af22 NIS |
7135 | I32 oldsavestack_ix = PL_savestack_ix; |
7136 | CV* outsidecv = PL_compcv; | |
748a9306 | 7137 | AV* comppadlist; |
8990e307 | 7138 | |
3280af22 NIS |
7139 | if (PL_compcv) { |
7140 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7141 | } |
7766f137 | 7142 | SAVEI32(PL_subline); |
3280af22 NIS |
7143 | save_item(PL_subname); |
7144 | SAVEI32(PL_padix); | |
354992b1 | 7145 | SAVECOMPPAD(); |
3280af22 NIS |
7146 | SAVESPTR(PL_comppad_name); |
7147 | SAVESPTR(PL_compcv); | |
7148 | SAVEI32(PL_comppad_name_fill); | |
7149 | SAVEI32(PL_min_intro_pending); | |
7150 | SAVEI32(PL_max_intro_pending); | |
7151 | SAVEI32(PL_pad_reset_pending); | |
7152 | ||
7153 | PL_compcv = (CV*)NEWSV(1104,0); | |
7154 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7155 | CvFLAGS(PL_compcv) |= flags; | |
7156 | ||
7157 | PL_comppad = newAV(); | |
7158 | av_push(PL_comppad, Nullsv); | |
7159 | PL_curpad = AvARRAY(PL_comppad); | |
7160 | PL_comppad_name = newAV(); | |
7161 | PL_comppad_name_fill = 0; | |
7162 | PL_min_intro_pending = 0; | |
7163 | PL_padix = 0; | |
57843af0 | 7164 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7165 | #ifdef USE_THREADS |
79cb57f6 | 7166 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7167 | PL_curpad[0] = (SV*)newAV(); |
7168 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7169 | #endif /* USE_THREADS */ |
748a9306 LW |
7170 | |
7171 | comppadlist = newAV(); | |
7172 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7173 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7174 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7175 | |
3280af22 NIS |
7176 | CvPADLIST(PL_compcv) = comppadlist; |
7177 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7178 | #ifdef USE_THREADS |
533c011a NIS |
7179 | CvOWNER(PL_compcv) = 0; |
7180 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7181 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7182 | #endif /* USE_THREADS */ |
748a9306 | 7183 | |
8990e307 LW |
7184 | return oldsavestack_ix; |
7185 | } | |
7186 | ||
7187 | int | |
864dbfa3 | 7188 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7189 | { |
11343788 | 7190 | dTHR; |
faef0170 | 7191 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7192 | yyerror(s); |
faef0170 | 7193 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7194 | return 0; |
8990e307 LW |
7195 | } |
7196 | ||
7197 | int | |
864dbfa3 | 7198 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7199 | { |
11343788 | 7200 | dTHR; |
68dc0745 | 7201 | char *where = NULL; |
7202 | char *context = NULL; | |
7203 | int contlen = -1; | |
46fc3d4c | 7204 | SV *msg; |
463ee0b2 | 7205 | |
3280af22 | 7206 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7207 | where = "at EOF"; |
3280af22 NIS |
7208 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7209 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7210 | while (isSPACE(*PL_oldoldbufptr)) | |
7211 | PL_oldoldbufptr++; | |
7212 | context = PL_oldoldbufptr; | |
7213 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7214 | } |
3280af22 NIS |
7215 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7216 | PL_oldbufptr != PL_bufptr) { | |
7217 | while (isSPACE(*PL_oldbufptr)) | |
7218 | PL_oldbufptr++; | |
7219 | context = PL_oldbufptr; | |
7220 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7221 | } |
7222 | else if (yychar > 255) | |
68dc0745 | 7223 | where = "next token ???"; |
cdfb297e GS |
7224 | #ifdef USE_PURE_BISON |
7225 | /* GNU Bison sets the value -2 */ | |
7226 | else if (yychar == -2) { | |
7227 | #else | |
463ee0b2 | 7228 | else if ((yychar & 127) == 127) { |
cdfb297e | 7229 | #endif |
3280af22 NIS |
7230 | if (PL_lex_state == LEX_NORMAL || |
7231 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7232 | where = "at end of line"; |
3280af22 | 7233 | else if (PL_lex_inpat) |
68dc0745 | 7234 | where = "within pattern"; |
463ee0b2 | 7235 | else |
68dc0745 | 7236 | where = "within string"; |
463ee0b2 | 7237 | } |
46fc3d4c | 7238 | else { |
79cb57f6 | 7239 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7240 | if (yychar < 32) |
cea2e8a9 | 7241 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7242 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7243 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7244 | else |
cea2e8a9 | 7245 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7246 | where = SvPVX(where_sv); |
463ee0b2 | 7247 | } |
46fc3d4c | 7248 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7249 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7250 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7251 | if (context) |
cea2e8a9 | 7252 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7253 | else |
cea2e8a9 | 7254 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7255 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7256 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7257 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7258 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7259 | PL_multi_end = 0; |
a0d0e21e | 7260 | } |
faef0170 | 7261 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7262 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7263 | else |
5a844595 GS |
7264 | qerror(msg); |
7265 | if (PL_error_count >= 10) | |
ed094faf | 7266 | Perl_croak(aTHX_ "%s has too many errors.\n", CopFILE(PL_curcop)); |
3280af22 NIS |
7267 | PL_in_my = 0; |
7268 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7269 | return 0; |
7270 | } | |
4e35701f | 7271 | |
161b471a | 7272 | |
51371543 | 7273 | #ifdef PERL_OBJECT |
51371543 GS |
7274 | #include "XSUB.h" |
7275 | #endif | |
7276 | ||
ffb4593c NT |
7277 | /* |
7278 | * restore_rsfp | |
7279 | * Restore a source filter. | |
7280 | */ | |
7281 | ||
51371543 GS |
7282 | static void |
7283 | restore_rsfp(pTHXo_ void *f) | |
7284 | { | |
7285 | PerlIO *fp = (PerlIO*)f; | |
7286 | ||
7287 | if (PL_rsfp == PerlIO_stdin()) | |
7288 | PerlIO_clearerr(PL_rsfp); | |
7289 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7290 | PerlIO_close(PL_rsfp); | |
7291 | PL_rsfp = fp; | |
7292 | } |