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 | ||
155aba94 | 322 | #if 0 |
a0ed51b3 | 323 | STATIC I32 |
cea2e8a9 | 324 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
325 | { |
326 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
327 | if (count) { | |
dfe13c55 GS |
328 | U8* tmps; |
329 | U8* tend; | |
330 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 331 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 332 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
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 | return count; | |
349 | } | |
155aba94 | 350 | #endif |
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)) { | |
155aba94 | 864 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
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++; | |
155aba94 GS |
1272 | } |
1273 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1274 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1275 | { | |
cc6b7395 | 1276 | I32 count = 1; |
0f5d15d6 | 1277 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1278 | char c; |
1279 | ||
d9f97599 GS |
1280 | while (count && (c = *regparse)) { |
1281 | if (c == '\\' && regparse[1]) | |
1282 | regparse++; | |
cc6b7395 IZ |
1283 | else if (c == '{') |
1284 | count++; | |
1285 | else if (c == '}') | |
1286 | count--; | |
d9f97599 | 1287 | regparse++; |
cc6b7395 | 1288 | } |
5bdf89e7 IZ |
1289 | if (*regparse != ')') { |
1290 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1291 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1292 | } |
0f5d15d6 | 1293 | while (s < regparse) |
cc6b7395 IZ |
1294 | *d++ = *s++; |
1295 | } | |
748a9306 | 1296 | } |
02aa26ce NT |
1297 | |
1298 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1299 | else if (*s == '#' && PL_lex_inpat && |
1300 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1301 | while (s+1 < send && *s != '\n') |
1302 | *d++ = *s++; | |
1303 | } | |
02aa26ce NT |
1304 | |
1305 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
7e2040f0 GS |
1306 | else if (*s == '@' && s[1] |
1307 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$", s[1]))) | |
79072805 | 1308 | break; |
02aa26ce NT |
1309 | |
1310 | /* check for embedded scalars. only stop if we're sure it's a | |
1311 | variable. | |
1312 | */ | |
79072805 | 1313 | else if (*s == '$') { |
3280af22 | 1314 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1315 | break; |
c277df42 | 1316 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1317 | break; /* in regexp, $ might be tail anchor */ |
1318 | } | |
02aa26ce | 1319 | |
a0ed51b3 LW |
1320 | /* (now in tr/// code again) */ |
1321 | ||
d008e5eb | 1322 | if (*s & 0x80 && thisutf) { |
012bcf8d GS |
1323 | (void)utf8_to_uv((U8*)s, &len); |
1324 | if (len == 1) { | |
1325 | /* illegal UTF8, make it valid */ | |
012bcf8d | 1326 | char *old_pvx = SvPVX(sv); |
bee7c419 GS |
1327 | /* need space for one extra char (NOTE: SvCUR() not set here) */ |
1328 | d = SvGROW(sv, SvLEN(sv) + 1) + (d - old_pvx); | |
012bcf8d GS |
1329 | d = (char*)uv_to_utf8((U8*)d, (U8)*s++); |
1330 | } | |
1331 | else { | |
1332 | while (len--) | |
1333 | *d++ = *s++; | |
1334 | } | |
1335 | has_utf = TRUE; | |
1336 | continue; | |
a0ed51b3 LW |
1337 | } |
1338 | ||
02aa26ce | 1339 | /* backslashes */ |
79072805 LW |
1340 | if (*s == '\\' && s+1 < send) { |
1341 | s++; | |
02aa26ce NT |
1342 | |
1343 | /* some backslashes we leave behind */ | |
c9f97d15 | 1344 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1345 | *d++ = '\\'; |
1346 | *d++ = *s++; | |
1347 | continue; | |
1348 | } | |
02aa26ce NT |
1349 | |
1350 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1351 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1352 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1353 | { |
d008e5eb | 1354 | dTHR; /* only for ckWARN */ |
599cee73 | 1355 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1356 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1357 | *--s = '$'; |
1358 | break; | |
1359 | } | |
02aa26ce NT |
1360 | |
1361 | /* string-change backslash escapes */ | |
3280af22 | 1362 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1363 | --s; |
1364 | break; | |
1365 | } | |
02aa26ce NT |
1366 | |
1367 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1368 | switch (*s) { |
02aa26ce NT |
1369 | |
1370 | /* quoted - in transliterations */ | |
79072805 | 1371 | case '-': |
3280af22 | 1372 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1373 | *d++ = *s++; |
1374 | continue; | |
1375 | } | |
1376 | /* FALL THROUGH */ | |
1377 | default: | |
11b8faa4 JH |
1378 | { |
1379 | dTHR; | |
e476b1b5 GS |
1380 | if (ckWARN(WARN_MISC) && isALPHA(*s)) |
1381 | Perl_warner(aTHX_ WARN_MISC, | |
11b8faa4 JH |
1382 | "Unrecognized escape \\%c passed through", |
1383 | *s); | |
1384 | /* default action is to copy the quoted character */ | |
1385 | *d++ = *s++; | |
1386 | continue; | |
1387 | } | |
02aa26ce NT |
1388 | |
1389 | /* \132 indicates an octal constant */ | |
79072805 LW |
1390 | case '0': case '1': case '2': case '3': |
1391 | case '4': case '5': case '6': case '7': | |
012bcf8d | 1392 | uv = (UV)scan_oct(s, 3, &len); |
79072805 | 1393 | s += len; |
012bcf8d | 1394 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1395 | |
1396 | /* \x24 indicates a hex constant */ | |
79072805 | 1397 | case 'x': |
a0ed51b3 LW |
1398 | ++s; |
1399 | if (*s == '{') { | |
1400 | char* e = strchr(s, '}'); | |
adaeee49 | 1401 | if (!e) { |
a0ed51b3 | 1402 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1403 | e = s; |
1404 | } | |
012bcf8d GS |
1405 | uv = (UV)scan_hex(s + 1, e - s - 1, &len); |
1406 | s = e + 1; | |
a0ed51b3 LW |
1407 | } |
1408 | else { | |
012bcf8d GS |
1409 | uv = (UV)scan_hex(s, 2, &len); |
1410 | s += len; | |
1411 | } | |
1412 | ||
1413 | NUM_ESCAPE_INSERT: | |
1414 | /* Insert oct or hex escaped character. | |
1415 | * There will always enough room in sv since such escapes will | |
1416 | * be longer than any utf8 sequence they can end up as | |
1417 | */ | |
1418 | if (uv > 127) { | |
1419 | if (!thisutf && !has_utf && uv > 255) { | |
1420 | /* might need to recode whatever we have accumulated so far | |
1421 | * if it contains any hibit chars | |
1422 | */ | |
1423 | int hicount = 0; | |
1424 | char *c; | |
1425 | for (c = SvPVX(sv); c < d; c++) { | |
1426 | if (*c & 0x80) | |
1427 | hicount++; | |
1428 | } | |
1429 | if (hicount) { | |
1430 | char *old_pvx = SvPVX(sv); | |
1431 | char *src, *dst; | |
1432 | d = SvGROW(sv, SvCUR(sv) + hicount + 1) + (d - old_pvx); | |
1433 | ||
1434 | src = d - 1; | |
1435 | d += hicount; | |
1436 | dst = d - 1; | |
1437 | ||
1438 | while (src < dst) { | |
1439 | if (*src & 0x80) { | |
1440 | dst--; | |
1441 | uv_to_utf8((U8*)dst, (U8)*src--); | |
1442 | dst--; | |
1443 | } | |
1444 | else { | |
1445 | *dst-- = *src--; | |
1446 | } | |
1447 | } | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | if (thisutf || uv > 255) { | |
1452 | d = (char*)uv_to_utf8((U8*)d, uv); | |
7e2040f0 | 1453 | has_utf = TRUE; |
012bcf8d | 1454 | } |
a0ed51b3 | 1455 | else { |
012bcf8d | 1456 | *d++ = (char)uv; |
a0ed51b3 | 1457 | } |
012bcf8d GS |
1458 | } |
1459 | else { | |
1460 | *d++ = (char)uv; | |
a0ed51b3 | 1461 | } |
79072805 | 1462 | continue; |
02aa26ce | 1463 | |
4a2d328f IZ |
1464 | /* \N{latin small letter a} is a named character */ |
1465 | case 'N': | |
423cee85 JH |
1466 | ++s; |
1467 | if (*s == '{') { | |
1468 | char* e = strchr(s, '}'); | |
155aba94 | 1469 | SV *res; |
423cee85 JH |
1470 | STRLEN len; |
1471 | char *str; | |
423cee85 JH |
1472 | |
1473 | if (!e) { | |
5777a3f7 | 1474 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1475 | e = s - 1; |
1476 | goto cont_scan; | |
1477 | } | |
1478 | res = newSVpvn(s + 1, e - s - 1); | |
1479 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1480 | res, Nullsv, "\\N{...}" ); |
423cee85 JH |
1481 | str = SvPV(res,len); |
1482 | if (len > e - s + 4) { | |
1483 | char *odest = SvPVX(sv); | |
1484 | ||
1485 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1486 | d = SvPVX(sv) + (d - odest); | |
1487 | } | |
1488 | Copy(str, d, len, char); | |
1489 | d += len; | |
1490 | SvREFCNT_dec(res); | |
1491 | cont_scan: | |
1492 | s = e + 1; | |
1493 | } | |
1494 | else | |
5777a3f7 | 1495 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1496 | continue; |
1497 | ||
02aa26ce | 1498 | /* \c is a control character */ |
79072805 LW |
1499 | case 'c': |
1500 | s++; | |
9d116dd7 JH |
1501 | #ifdef EBCDIC |
1502 | *d = *s++; | |
1503 | if (isLOWER(*d)) | |
1504 | *d = toUPPER(*d); | |
1505 | *d++ = toCTRL(*d); | |
1506 | #else | |
bbce6d69 | 1507 | len = *s++; |
1508 | *d++ = toCTRL(len); | |
9d116dd7 | 1509 | #endif |
79072805 | 1510 | continue; |
02aa26ce NT |
1511 | |
1512 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1513 | case 'b': |
1514 | *d++ = '\b'; | |
1515 | break; | |
1516 | case 'n': | |
1517 | *d++ = '\n'; | |
1518 | break; | |
1519 | case 'r': | |
1520 | *d++ = '\r'; | |
1521 | break; | |
1522 | case 'f': | |
1523 | *d++ = '\f'; | |
1524 | break; | |
1525 | case 't': | |
1526 | *d++ = '\t'; | |
1527 | break; | |
34a3fe2a PP |
1528 | #ifdef EBCDIC |
1529 | case 'e': | |
1530 | *d++ = '\047'; /* CP 1047 */ | |
1531 | break; | |
1532 | case 'a': | |
1533 | *d++ = '\057'; /* CP 1047 */ | |
1534 | break; | |
1535 | #else | |
79072805 LW |
1536 | case 'e': |
1537 | *d++ = '\033'; | |
1538 | break; | |
1539 | case 'a': | |
1540 | *d++ = '\007'; | |
1541 | break; | |
34a3fe2a | 1542 | #endif |
02aa26ce NT |
1543 | } /* end switch */ |
1544 | ||
79072805 LW |
1545 | s++; |
1546 | continue; | |
02aa26ce NT |
1547 | } /* end if (backslash) */ |
1548 | ||
79072805 | 1549 | *d++ = *s++; |
02aa26ce NT |
1550 | } /* while loop to process each character */ |
1551 | ||
1552 | /* terminate the string and set up the sv */ | |
79072805 | 1553 | *d = '\0'; |
463ee0b2 | 1554 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 | 1555 | SvPOK_on(sv); |
7e2040f0 GS |
1556 | if (has_utf) |
1557 | SvUTF8_on(sv); | |
79072805 | 1558 | |
02aa26ce | 1559 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1560 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1561 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1562 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1563 | } |
02aa26ce | 1564 | |
9b599b2a | 1565 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1566 | if (s > PL_bufptr) { |
1567 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1568 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1569 | sv, Nullsv, |
3280af22 | 1570 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1571 | ? "tr" |
3280af22 | 1572 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1573 | ? "s" |
1574 | : "qq"))); | |
79072805 | 1575 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1576 | } else |
8990e307 | 1577 | SvREFCNT_dec(sv); |
79072805 LW |
1578 | return s; |
1579 | } | |
1580 | ||
ffb4593c NT |
1581 | /* S_intuit_more |
1582 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1583 | * FALSE otherwise. | |
ffb4593c NT |
1584 | * |
1585 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1586 | * | |
1587 | * ->[ and ->{ return TRUE | |
1588 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1589 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1590 | * if we're in a pattern and the first char is a { | |
1591 | * {4,5} (any digits around the comma) returns FALSE | |
1592 | * if we're in a pattern and the first char is a [ | |
1593 | * [] returns FALSE | |
1594 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1595 | * character class or not. It has to deal with things like | |
1596 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1597 | * anything else returns TRUE | |
1598 | */ | |
1599 | ||
9cbb5ea2 GS |
1600 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1601 | ||
76e3520e | 1602 | STATIC int |
cea2e8a9 | 1603 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1604 | { |
3280af22 | 1605 | if (PL_lex_brackets) |
79072805 LW |
1606 | return TRUE; |
1607 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1608 | return TRUE; | |
1609 | if (*s != '{' && *s != '[') | |
1610 | return FALSE; | |
3280af22 | 1611 | if (!PL_lex_inpat) |
79072805 LW |
1612 | return TRUE; |
1613 | ||
1614 | /* In a pattern, so maybe we have {n,m}. */ | |
1615 | if (*s == '{') { | |
1616 | s++; | |
1617 | if (!isDIGIT(*s)) | |
1618 | return TRUE; | |
1619 | while (isDIGIT(*s)) | |
1620 | s++; | |
1621 | if (*s == ',') | |
1622 | s++; | |
1623 | while (isDIGIT(*s)) | |
1624 | s++; | |
1625 | if (*s == '}') | |
1626 | return FALSE; | |
1627 | return TRUE; | |
1628 | ||
1629 | } | |
1630 | ||
1631 | /* On the other hand, maybe we have a character class */ | |
1632 | ||
1633 | s++; | |
1634 | if (*s == ']' || *s == '^') | |
1635 | return FALSE; | |
1636 | else { | |
ffb4593c | 1637 | /* this is terrifying, and it works */ |
79072805 LW |
1638 | int weight = 2; /* let's weigh the evidence */ |
1639 | char seen[256]; | |
f27ffc4a | 1640 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1641 | char *send = strchr(s,']'); |
3280af22 | 1642 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1643 | |
1644 | if (!send) /* has to be an expression */ | |
1645 | return TRUE; | |
1646 | ||
1647 | Zero(seen,256,char); | |
1648 | if (*s == '$') | |
1649 | weight -= 3; | |
1650 | else if (isDIGIT(*s)) { | |
1651 | if (s[1] != ']') { | |
1652 | if (isDIGIT(s[1]) && s[2] == ']') | |
1653 | weight -= 10; | |
1654 | } | |
1655 | else | |
1656 | weight -= 100; | |
1657 | } | |
1658 | for (; s < send; s++) { | |
1659 | last_un_char = un_char; | |
1660 | un_char = (unsigned char)*s; | |
1661 | switch (*s) { | |
1662 | case '@': | |
1663 | case '&': | |
1664 | case '$': | |
1665 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1666 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1667 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1668 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1669 | weight -= 100; |
1670 | else | |
1671 | weight -= 10; | |
1672 | } | |
1673 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1674 | strchr("[#!%*<>()-=",s[1])) { |
1675 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1676 | weight -= 10; |
1677 | else | |
1678 | weight -= 1; | |
1679 | } | |
1680 | break; | |
1681 | case '\\': | |
1682 | un_char = 254; | |
1683 | if (s[1]) { | |
93a17b20 | 1684 | if (strchr("wds]",s[1])) |
79072805 LW |
1685 | weight += 100; |
1686 | else if (seen['\''] || seen['"']) | |
1687 | weight += 1; | |
93a17b20 | 1688 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1689 | weight += 40; |
1690 | else if (isDIGIT(s[1])) { | |
1691 | weight += 40; | |
1692 | while (s[1] && isDIGIT(s[1])) | |
1693 | s++; | |
1694 | } | |
1695 | } | |
1696 | else | |
1697 | weight += 100; | |
1698 | break; | |
1699 | case '-': | |
1700 | if (s[1] == '\\') | |
1701 | weight += 50; | |
93a17b20 | 1702 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1703 | weight += 30; |
93a17b20 | 1704 | if (strchr("zZ79~",s[1])) |
79072805 | 1705 | weight += 30; |
f27ffc4a GS |
1706 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1707 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1708 | break; |
1709 | default: | |
93a17b20 | 1710 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1711 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1712 | char *d = tmpbuf; | |
1713 | while (isALPHA(*s)) | |
1714 | *d++ = *s++; | |
1715 | *d = '\0'; | |
1716 | if (keyword(tmpbuf, d - tmpbuf)) | |
1717 | weight -= 150; | |
1718 | } | |
1719 | if (un_char == last_un_char + 1) | |
1720 | weight += 5; | |
1721 | weight -= seen[un_char]; | |
1722 | break; | |
1723 | } | |
1724 | seen[un_char]++; | |
1725 | } | |
1726 | if (weight >= 0) /* probably a character class */ | |
1727 | return FALSE; | |
1728 | } | |
1729 | ||
1730 | return TRUE; | |
1731 | } | |
ffed7fef | 1732 | |
ffb4593c NT |
1733 | /* |
1734 | * S_intuit_method | |
1735 | * | |
1736 | * Does all the checking to disambiguate | |
1737 | * foo bar | |
1738 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1739 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1740 | * | |
1741 | * First argument is the stuff after the first token, e.g. "bar". | |
1742 | * | |
1743 | * Not a method if bar is a filehandle. | |
1744 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1745 | * Not a method if it's really "Foo $bar" | |
1746 | * Method if it's "foo $bar" | |
1747 | * Not a method if it's really "print foo $bar" | |
1748 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1749 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1750 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1751 | * => |
1752 | */ | |
1753 | ||
76e3520e | 1754 | STATIC int |
cea2e8a9 | 1755 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1756 | { |
1757 | char *s = start + (*start == '$'); | |
3280af22 | 1758 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1759 | STRLEN len; |
1760 | GV* indirgv; | |
1761 | ||
1762 | if (gv) { | |
b6c543e3 | 1763 | CV *cv; |
a0d0e21e LW |
1764 | if (GvIO(gv)) |
1765 | return 0; | |
b6c543e3 IZ |
1766 | if ((cv = GvCVu(gv))) { |
1767 | char *proto = SvPVX(cv); | |
1768 | if (proto) { | |
1769 | if (*proto == ';') | |
1770 | proto++; | |
1771 | if (*proto == '*') | |
1772 | return 0; | |
1773 | } | |
1774 | } else | |
a0d0e21e LW |
1775 | gv = 0; |
1776 | } | |
8903cb82 | 1777 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1778 | /* start is the beginning of the possible filehandle/object, |
1779 | * and s is the end of it | |
1780 | * tmpbuf is a copy of it | |
1781 | */ | |
1782 | ||
a0d0e21e | 1783 | if (*start == '$') { |
3280af22 | 1784 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1785 | return 0; |
1786 | s = skipspace(s); | |
3280af22 NIS |
1787 | PL_bufptr = start; |
1788 | PL_expect = XREF; | |
a0d0e21e LW |
1789 | return *s == '(' ? FUNCMETH : METHOD; |
1790 | } | |
1791 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1792 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1793 | len -= 2; | |
1794 | tmpbuf[len] = '\0'; | |
1795 | goto bare_package; | |
1796 | } | |
1797 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1798 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1799 | return 0; |
1800 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1801 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1802 | s = skipspace(s); |
3280af22 | 1803 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1804 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1805 | bare_package: |
3280af22 | 1806 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1807 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1808 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1809 | PL_expect = XTERM; | |
a0d0e21e | 1810 | force_next(WORD); |
3280af22 | 1811 | PL_bufptr = s; |
a0d0e21e LW |
1812 | return *s == '(' ? FUNCMETH : METHOD; |
1813 | } | |
1814 | } | |
1815 | return 0; | |
1816 | } | |
1817 | ||
ffb4593c NT |
1818 | /* |
1819 | * S_incl_perldb | |
1820 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1821 | * is set, it will return the contents of that, otherwise a | |
1822 | * compile-time require of perl5db.pl. | |
1823 | */ | |
1824 | ||
76e3520e | 1825 | STATIC char* |
cea2e8a9 | 1826 | S_incl_perldb(pTHX) |
a0d0e21e | 1827 | { |
3280af22 | 1828 | if (PL_perldb) { |
76e3520e | 1829 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1830 | |
1831 | if (pdb) | |
1832 | return pdb; | |
61bb5906 | 1833 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1834 | return "BEGIN { require 'perl5db.pl' }"; |
1835 | } | |
1836 | return ""; | |
1837 | } | |
1838 | ||
1839 | ||
16d20bd9 AD |
1840 | /* Encoded script support. filter_add() effectively inserts a |
1841 | * 'pre-processing' function into the current source input stream. | |
1842 | * Note that the filter function only applies to the current source file | |
1843 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1844 | * | |
1845 | * The datasv parameter (which may be NULL) can be used to pass | |
1846 | * private data to this instance of the filter. The filter function | |
1847 | * can recover the SV using the FILTER_DATA macro and use it to | |
1848 | * store private buffers and state information. | |
1849 | * | |
1850 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1851 | * and the IoDIRP field is used to store the function pointer, |
1852 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1853 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1854 | * private use must be set using malloc'd pointers. | |
1855 | */ | |
16d20bd9 AD |
1856 | |
1857 | SV * | |
864dbfa3 | 1858 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1859 | { |
f4c556ac GS |
1860 | if (!funcp) |
1861 | return Nullsv; | |
1862 | ||
3280af22 NIS |
1863 | if (!PL_rsfp_filters) |
1864 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1865 | if (!datasv) |
8c52afec | 1866 | datasv = NEWSV(255,0); |
16d20bd9 | 1867 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1868 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1869 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1870 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1871 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1872 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1873 | av_unshift(PL_rsfp_filters, 1); |
1874 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1875 | return(datasv); |
1876 | } | |
1877 | ||
1878 | ||
1879 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1880 | void |
864dbfa3 | 1881 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1882 | { |
e0c19803 | 1883 | SV *datasv; |
f4c556ac | 1884 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1885 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1886 | return; |
1887 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1888 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1889 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1890 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1891 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1892 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1893 | |
16d20bd9 AD |
1894 | return; |
1895 | } | |
1896 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1897 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1898 | } |
1899 | ||
1900 | ||
1901 | /* Invoke the n'th filter function for the current rsfp. */ | |
1902 | I32 | |
864dbfa3 | 1903 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1904 | |
1905 | ||
1906 | /* 0 = read one text line */ | |
a0d0e21e | 1907 | { |
16d20bd9 AD |
1908 | filter_t funcp; |
1909 | SV *datasv = NULL; | |
e50aee73 | 1910 | |
3280af22 | 1911 | if (!PL_rsfp_filters) |
16d20bd9 | 1912 | return -1; |
3280af22 | 1913 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1914 | /* Provide a default input filter to make life easy. */ |
1915 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1916 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1917 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1918 | if (maxlen) { |
1919 | /* Want a block */ | |
1920 | int len ; | |
1921 | int old_len = SvCUR(buf_sv) ; | |
1922 | ||
1923 | /* ensure buf_sv is large enough */ | |
1924 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1925 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1926 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1927 | return -1; /* error */ |
1928 | else | |
1929 | return 0 ; /* end of file */ | |
1930 | } | |
16d20bd9 AD |
1931 | SvCUR_set(buf_sv, old_len + len) ; |
1932 | } else { | |
1933 | /* Want a line */ | |
3280af22 NIS |
1934 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1935 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1936 | return -1; /* error */ |
1937 | else | |
1938 | return 0 ; /* end of file */ | |
1939 | } | |
16d20bd9 AD |
1940 | } |
1941 | return SvCUR(buf_sv); | |
1942 | } | |
1943 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1944 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1945 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1946 | "filter_read %d: skipped (filter deleted)\n", | |
1947 | idx)); | |
16d20bd9 AD |
1948 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1949 | } | |
1950 | /* Get function pointer hidden within datasv */ | |
1951 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1952 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1953 | "filter_read %d: via function %p (%s)\n", | |
1954 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1955 | /* Call function. The function is expected to */ |
1956 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1957 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1958 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1959 | } |
1960 | ||
76e3520e | 1961 | STATIC char * |
cea2e8a9 | 1962 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1963 | { |
c39cd008 | 1964 | #ifdef PERL_CR_FILTER |
3280af22 | 1965 | if (!PL_rsfp_filters) { |
c39cd008 | 1966 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1967 | } |
1968 | #endif | |
3280af22 | 1969 | if (PL_rsfp_filters) { |
16d20bd9 | 1970 | |
55497cff | 1971 | if (!append) |
1972 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1973 | if (FILTER_READ(0, sv, 0) > 0) |
1974 | return ( SvPVX(sv) ) ; | |
1975 | else | |
1976 | return Nullch ; | |
1977 | } | |
9d116dd7 | 1978 | else |
fd049845 | 1979 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1980 | } |
1981 | ||
1982 | ||
748a9306 LW |
1983 | #ifdef DEBUGGING |
1984 | static char* exp_name[] = | |
09bef843 SB |
1985 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1986 | "ATTRTERM", "TERMBLOCK" | |
1987 | }; | |
748a9306 | 1988 | #endif |
463ee0b2 | 1989 | |
02aa26ce NT |
1990 | /* |
1991 | yylex | |
1992 | ||
1993 | Works out what to call the token just pulled out of the input | |
1994 | stream. The yacc parser takes care of taking the ops we return and | |
1995 | stitching them into a tree. | |
1996 | ||
1997 | Returns: | |
1998 | PRIVATEREF | |
1999 | ||
2000 | Structure: | |
2001 | if read an identifier | |
2002 | if we're in a my declaration | |
2003 | croak if they tried to say my($foo::bar) | |
2004 | build the ops for a my() declaration | |
2005 | if it's an access to a my() variable | |
2006 | are we in a sort block? | |
2007 | croak if my($a); $a <=> $b | |
2008 | build ops for access to a my() variable | |
2009 | if in a dq string, and they've said @foo and we can't find @foo | |
2010 | croak | |
2011 | build ops for a bareword | |
2012 | if we already built the token before, use it. | |
2013 | */ | |
2014 | ||
864dbfa3 GS |
2015 | int |
2016 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 2017 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 2018 | #else |
cea2e8a9 | 2019 | Perl_yylex(pTHX) |
864dbfa3 | 2020 | #endif |
378cc40b | 2021 | { |
11343788 | 2022 | dTHR; |
79072805 | 2023 | register char *s; |
378cc40b | 2024 | register char *d; |
79072805 | 2025 | register I32 tmp; |
463ee0b2 | 2026 | STRLEN len; |
161b471a NIS |
2027 | GV *gv = Nullgv; |
2028 | GV **gvp = 0; | |
a687059c | 2029 | |
a1a0e61e TD |
2030 | #ifdef USE_PURE_BISON |
2031 | yylval_pointer = lvalp; | |
2032 | yychar_pointer = lcharp; | |
2033 | #endif | |
2034 | ||
02aa26ce | 2035 | /* check if there's an identifier for us to look at */ |
3280af22 | 2036 | if (PL_pending_ident) { |
02aa26ce | 2037 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
2038 | char pit = PL_pending_ident; |
2039 | PL_pending_ident = 0; | |
bbce6d69 | 2040 | |
02aa26ce NT |
2041 | /* if we're in a my(), we can't allow dynamics here. |
2042 | $foo'bar has already been turned into $foo::bar, so | |
2043 | just check for colons. | |
2044 | ||
2045 | if it's a legal name, the OP is a PADANY. | |
2046 | */ | |
3280af22 | 2047 | if (PL_in_my) { |
77ca0c92 | 2048 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
2049 | if (strchr(PL_tokenbuf,':')) |
2050 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
2051 | "variable %s in \"our\"", | |
2052 | PL_tokenbuf)); | |
77ca0c92 LW |
2053 | tmp = pad_allocmy(PL_tokenbuf); |
2054 | } | |
2055 | else { | |
2056 | if (strchr(PL_tokenbuf,':')) | |
2057 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 2058 | |
77ca0c92 LW |
2059 | yylval.opval = newOP(OP_PADANY, 0); |
2060 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
2061 | return PRIVATEREF; | |
2062 | } | |
bbce6d69 | 2063 | } |
2064 | ||
02aa26ce NT |
2065 | /* |
2066 | build the ops for accesses to a my() variable. | |
2067 | ||
2068 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
2069 | then used in a comparison. This catches most, but not | |
2070 | all cases. For instance, it catches | |
2071 | sort { my($a); $a <=> $b } | |
2072 | but not | |
2073 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2074 | (although why you'd do that is anyone's guess). | |
2075 | */ | |
2076 | ||
3280af22 | 2077 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2078 | #ifdef USE_THREADS |
54b9620d | 2079 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2080 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2081 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2082 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2083 | { |
2faa37cc | 2084 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2085 | yylval.opval->op_targ = tmp; |
2086 | return PRIVATEREF; | |
2087 | } | |
2088 | #endif /* USE_THREADS */ | |
3280af22 | 2089 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2090 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2091 | /* might be an "our" variable" */ |
f472eb5c | 2092 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2093 | /* build ops for a bareword */ |
f472eb5c GS |
2094 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2095 | sv_catpvn(sym, "::", 2); | |
2096 | sv_catpv(sym, PL_tokenbuf+1); | |
2097 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2098 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2099 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2100 | (PL_in_eval |
f472eb5c GS |
2101 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2102 | : TRUE | |
77ca0c92 LW |
2103 | ), |
2104 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2105 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2106 | : SVt_PVHV)); | |
2107 | return WORD; | |
2108 | } | |
2109 | ||
02aa26ce | 2110 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2111 | if (PL_last_lop_op == OP_SORT && |
2112 | PL_tokenbuf[0] == '$' && | |
2113 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2114 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2115 | { |
3280af22 NIS |
2116 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2117 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2118 | d++) |
2119 | { | |
2120 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2121 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2122 | PL_tokenbuf); |
a863c7d1 | 2123 | } |
bbce6d69 | 2124 | } |
2125 | } | |
bbce6d69 | 2126 | |
a863c7d1 MB |
2127 | yylval.opval = newOP(OP_PADANY, 0); |
2128 | yylval.opval->op_targ = tmp; | |
2129 | return PRIVATEREF; | |
2130 | } | |
bbce6d69 | 2131 | } |
2132 | ||
02aa26ce NT |
2133 | /* |
2134 | Whine if they've said @foo in a doublequoted string, | |
2135 | and @foo isn't a variable we can find in the symbol | |
2136 | table. | |
2137 | */ | |
3280af22 NIS |
2138 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2139 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2140 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2141 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2142 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2143 | } |
2144 | ||
02aa26ce | 2145 | /* build ops for a bareword */ |
3280af22 | 2146 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2147 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2148 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2149 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2150 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2151 | : SVt_PVHV)); |
2152 | return WORD; | |
2153 | } | |
2154 | ||
02aa26ce NT |
2155 | /* no identifier pending identification */ |
2156 | ||
3280af22 | 2157 | switch (PL_lex_state) { |
79072805 LW |
2158 | #ifdef COMMENTARY |
2159 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2160 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2161 | break; | |
2162 | #endif | |
2163 | ||
09bef843 | 2164 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2165 | case LEX_KNOWNEXT: |
3280af22 NIS |
2166 | PL_nexttoke--; |
2167 | yylval = PL_nextval[PL_nexttoke]; | |
2168 | if (!PL_nexttoke) { | |
2169 | PL_lex_state = PL_lex_defer; | |
2170 | PL_expect = PL_lex_expect; | |
2171 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2172 | } |
3280af22 | 2173 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2174 | |
02aa26ce | 2175 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2176 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2177 | */ |
79072805 LW |
2178 | case LEX_INTERPCASEMOD: |
2179 | #ifdef DEBUGGING | |
3280af22 | 2180 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2181 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2182 | #endif |
02aa26ce | 2183 | /* handle \E or end of string */ |
3280af22 | 2184 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2185 | char oldmod; |
02aa26ce NT |
2186 | |
2187 | /* if at a \E */ | |
3280af22 NIS |
2188 | if (PL_lex_casemods) { |
2189 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2190 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2191 | |
3280af22 NIS |
2192 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2193 | PL_bufptr += 2; | |
2194 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2195 | } |
79072805 LW |
2196 | return ')'; |
2197 | } | |
3280af22 NIS |
2198 | if (PL_bufptr != PL_bufend) |
2199 | PL_bufptr += 2; | |
2200 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2201 | return yylex(); |
79072805 LW |
2202 | } |
2203 | else { | |
3280af22 | 2204 | s = PL_bufptr + 1; |
79072805 LW |
2205 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2206 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2207 | if (strchr("LU", *s) && |
3280af22 | 2208 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2209 | { |
3280af22 | 2210 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2211 | return ')'; |
2212 | } | |
3280af22 NIS |
2213 | if (PL_lex_casemods > 10) { |
2214 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2215 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2216 | SAVEFREEPV(newlb); |
3280af22 | 2217 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2218 | } |
2219 | } | |
3280af22 NIS |
2220 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2221 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2222 | PL_lex_state = LEX_INTERPCONCAT; | |
2223 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2224 | force_next('('); |
2225 | if (*s == 'l') | |
3280af22 | 2226 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2227 | else if (*s == 'u') |
3280af22 | 2228 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2229 | else if (*s == 'L') |
3280af22 | 2230 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2231 | else if (*s == 'U') |
3280af22 | 2232 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2233 | else if (*s == 'Q') |
3280af22 | 2234 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2235 | else |
cea2e8a9 | 2236 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2237 | PL_bufptr = s + 1; |
79072805 | 2238 | force_next(FUNC); |
3280af22 NIS |
2239 | if (PL_lex_starts) { |
2240 | s = PL_bufptr; | |
2241 | PL_lex_starts = 0; | |
79072805 LW |
2242 | Aop(OP_CONCAT); |
2243 | } | |
2244 | else | |
cea2e8a9 | 2245 | return yylex(); |
79072805 LW |
2246 | } |
2247 | ||
55497cff | 2248 | case LEX_INTERPPUSH: |
2249 | return sublex_push(); | |
2250 | ||
79072805 | 2251 | case LEX_INTERPSTART: |
3280af22 | 2252 | if (PL_bufptr == PL_bufend) |
79072805 | 2253 | return sublex_done(); |
3280af22 NIS |
2254 | PL_expect = XTERM; |
2255 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2256 | PL_lex_state = LEX_INTERPNORMAL; | |
2257 | if (PL_lex_dojoin) { | |
2258 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2259 | force_next(','); |
554b3eca | 2260 | #ifdef USE_THREADS |
533c011a NIS |
2261 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2262 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2263 | force_next(PRIVATEREF); |
2264 | #else | |
a0d0e21e | 2265 | force_ident("\"", '$'); |
554b3eca | 2266 | #endif /* USE_THREADS */ |
3280af22 | 2267 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2268 | force_next('$'); |
3280af22 | 2269 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2270 | force_next('('); |
3280af22 | 2271 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2272 | force_next(FUNC); |
2273 | } | |
3280af22 NIS |
2274 | if (PL_lex_starts++) { |
2275 | s = PL_bufptr; | |
79072805 LW |
2276 | Aop(OP_CONCAT); |
2277 | } | |
cea2e8a9 | 2278 | return yylex(); |
79072805 LW |
2279 | |
2280 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2281 | if (intuit_more(PL_bufptr)) { |
2282 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2283 | break; |
2284 | } | |
2285 | /* FALL THROUGH */ | |
2286 | ||
2287 | case LEX_INTERPEND: | |
3280af22 NIS |
2288 | if (PL_lex_dojoin) { |
2289 | PL_lex_dojoin = FALSE; | |
2290 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2291 | return ')'; |
2292 | } | |
43a16006 | 2293 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2294 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2295 | { |
e9fa98b2 | 2296 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2297 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2298 | PL_lex_repl = Nullsv; |
2299 | } | |
79072805 LW |
2300 | /* FALLTHROUGH */ |
2301 | case LEX_INTERPCONCAT: | |
2302 | #ifdef DEBUGGING | |
3280af22 | 2303 | if (PL_lex_brackets) |
cea2e8a9 | 2304 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2305 | #endif |
3280af22 | 2306 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2307 | return sublex_done(); |
2308 | ||
3280af22 NIS |
2309 | if (SvIVX(PL_linestr) == '\'') { |
2310 | SV *sv = newSVsv(PL_linestr); | |
2311 | if (!PL_lex_inpat) | |
76e3520e | 2312 | sv = tokeq(sv); |
3280af22 | 2313 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2314 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2315 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2316 | s = PL_bufend; |
79072805 LW |
2317 | } |
2318 | else { | |
3280af22 | 2319 | s = scan_const(PL_bufptr); |
79072805 | 2320 | if (*s == '\\') |
3280af22 | 2321 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2322 | else |
3280af22 | 2323 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2324 | } |
2325 | ||
3280af22 NIS |
2326 | if (s != PL_bufptr) { |
2327 | PL_nextval[PL_nexttoke] = yylval; | |
2328 | PL_expect = XTERM; | |
79072805 | 2329 | force_next(THING); |
3280af22 | 2330 | if (PL_lex_starts++) |
79072805 LW |
2331 | Aop(OP_CONCAT); |
2332 | else { | |
3280af22 | 2333 | PL_bufptr = s; |
cea2e8a9 | 2334 | return yylex(); |
79072805 LW |
2335 | } |
2336 | } | |
2337 | ||
cea2e8a9 | 2338 | return yylex(); |
a0d0e21e | 2339 | case LEX_FORMLINE: |
3280af22 NIS |
2340 | PL_lex_state = LEX_NORMAL; |
2341 | s = scan_formline(PL_bufptr); | |
2342 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2343 | goto rightbracket; |
2344 | OPERATOR(';'); | |
79072805 LW |
2345 | } |
2346 | ||
3280af22 NIS |
2347 | s = PL_bufptr; |
2348 | PL_oldoldbufptr = PL_oldbufptr; | |
2349 | PL_oldbufptr = s; | |
79072805 | 2350 | DEBUG_p( { |
bf49b057 GS |
2351 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2352 | exp_name[PL_expect], s); | |
79072805 | 2353 | } ) |
463ee0b2 LW |
2354 | |
2355 | retry: | |
378cc40b LW |
2356 | switch (*s) { |
2357 | default: | |
7e2040f0 | 2358 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2359 | goto keylookup; |
cea2e8a9 | 2360 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2361 | case 4: |
2362 | case 26: | |
2363 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2364 | case 0: |
3280af22 NIS |
2365 | if (!PL_rsfp) { |
2366 | PL_last_uni = 0; | |
2367 | PL_last_lop = 0; | |
2368 | if (PL_lex_brackets) | |
d98d5fff | 2369 | yyerror("Missing right curly or square bracket"); |
79072805 | 2370 | TOKEN(0); |
463ee0b2 | 2371 | } |
3280af22 | 2372 | if (s++ < PL_bufend) |
a687059c | 2373 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2374 | PL_last_uni = 0; |
2375 | PL_last_lop = 0; | |
2376 | if (!PL_in_eval && !PL_preambled) { | |
2377 | PL_preambled = TRUE; | |
2378 | sv_setpv(PL_linestr,incl_perldb()); | |
2379 | if (SvCUR(PL_linestr)) | |
2380 | sv_catpv(PL_linestr,";"); | |
2381 | if (PL_preambleav){ | |
2382 | while(AvFILLp(PL_preambleav) >= 0) { | |
2383 | SV *tmpsv = av_shift(PL_preambleav); | |
2384 | sv_catsv(PL_linestr, tmpsv); | |
2385 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2386 | sv_free(tmpsv); |
2387 | } | |
3280af22 NIS |
2388 | sv_free((SV*)PL_preambleav); |
2389 | PL_preambleav = NULL; | |
91b7def8 | 2390 | } |
3280af22 NIS |
2391 | if (PL_minus_n || PL_minus_p) { |
2392 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2393 | if (PL_minus_l) | |
2394 | sv_catpv(PL_linestr,"chomp;"); | |
2395 | if (PL_minus_a) { | |
8fd239a7 CS |
2396 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2397 | if (gv) | |
2398 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2399 | if (PL_minus_F) { |
2400 | if (strchr("/'\"", *PL_splitstr) | |
2401 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2402 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2403 | else { |
2404 | char delim; | |
2405 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2406 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2407 | delim = *s; |
cea2e8a9 | 2408 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2409 | "q" + (delim == '\''), delim); |
3280af22 | 2410 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2411 | if (*s == '\\') |
3280af22 NIS |
2412 | sv_catpvn(PL_linestr, "\\", 1); |
2413 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2414 | } |
cea2e8a9 | 2415 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2416 | } |
2304df62 AD |
2417 | } |
2418 | else | |
3280af22 | 2419 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2420 | } |
79072805 | 2421 | } |
3280af22 NIS |
2422 | sv_catpv(PL_linestr, "\n"); |
2423 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2424 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2425 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2426 | SV *sv = NEWSV(85,0); |
2427 | ||
2428 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2429 | sv_setsv(sv,PL_linestr); |
57843af0 | 2430 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2431 | } |
79072805 | 2432 | goto retry; |
a687059c | 2433 | } |
e929a76b | 2434 | do { |
3280af22 | 2435 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2436 | fake_eof: |
3280af22 NIS |
2437 | if (PL_rsfp) { |
2438 | if (PL_preprocess && !PL_in_eval) | |
2439 | (void)PerlProc_pclose(PL_rsfp); | |
2440 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2441 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2442 | else |
3280af22 NIS |
2443 | (void)PerlIO_close(PL_rsfp); |
2444 | PL_rsfp = Nullfp; | |
4a9ae47a | 2445 | PL_doextract = FALSE; |
395c3793 | 2446 | } |
3280af22 NIS |
2447 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2448 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2449 | sv_catpv(PL_linestr,";}"); | |
2450 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2451 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2452 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2453 | goto retry; |
2454 | } | |
3280af22 NIS |
2455 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2456 | sv_setpv(PL_linestr,""); | |
79072805 | 2457 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2458 | } |
3280af22 | 2459 | if (PL_doextract) { |
a0d0e21e | 2460 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2461 | PL_doextract = FALSE; |
a0d0e21e LW |
2462 | |
2463 | /* Incest with pod. */ | |
2464 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2465 | sv_setpv(PL_linestr, ""); |
2466 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2467 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2468 | PL_doextract = FALSE; | |
a0d0e21e LW |
2469 | } |
2470 | } | |
463ee0b2 | 2471 | incline(s); |
3280af22 NIS |
2472 | } while (PL_doextract); |
2473 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2474 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2475 | SV *sv = NEWSV(85,0); |
a687059c | 2476 | |
93a17b20 | 2477 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2478 | sv_setsv(sv,PL_linestr); |
57843af0 | 2479 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2480 | } |
3280af22 | 2481 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2482 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2483 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2484 | s++; |
a0d0e21e | 2485 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2486 | s++; |
44a8e56a | 2487 | d = Nullch; |
3280af22 | 2488 | if (!PL_in_eval) { |
44a8e56a | 2489 | if (*s == '#' && *(s+1) == '!') |
2490 | d = s + 2; | |
2491 | #ifdef ALTERNATE_SHEBANG | |
2492 | else { | |
2493 | static char as[] = ALTERNATE_SHEBANG; | |
2494 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2495 | d = s + (sizeof(as) - 1); | |
2496 | } | |
2497 | #endif /* ALTERNATE_SHEBANG */ | |
2498 | } | |
2499 | if (d) { | |
b8378b72 | 2500 | char *ipath; |
774d564b | 2501 | char *ipathend; |
b8378b72 | 2502 | |
774d564b | 2503 | while (isSPACE(*d)) |
b8378b72 CS |
2504 | d++; |
2505 | ipath = d; | |
774d564b | 2506 | while (*d && !isSPACE(*d)) |
2507 | d++; | |
2508 | ipathend = d; | |
2509 | ||
2510 | #ifdef ARG_ZERO_IS_SCRIPT | |
2511 | if (ipathend > ipath) { | |
2512 | /* | |
2513 | * HP-UX (at least) sets argv[0] to the script name, | |
2514 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2515 | * at least, set argv[0] to the basename of the Perl | |
2516 | * interpreter. So, having found "#!", we'll set it right. | |
2517 | */ | |
2518 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2519 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2520 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2521 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2522 | SvSETMAGIC(x); |
2523 | } | |
774d564b | 2524 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2525 | } |
774d564b | 2526 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2527 | |
2528 | /* | |
2529 | * Look for options. | |
2530 | */ | |
748a9306 | 2531 | d = instr(s,"perl -"); |
84e30d1a | 2532 | if (!d) { |
748a9306 | 2533 | d = instr(s,"perl"); |
84e30d1a GS |
2534 | #if defined(DOSISH) |
2535 | /* avoid getting into infinite loops when shebang | |
2536 | * line contains "Perl" rather than "perl" */ | |
2537 | if (!d) { | |
2538 | for (d = ipathend-4; d >= ipath; --d) { | |
2539 | if ((*d == 'p' || *d == 'P') | |
2540 | && !ibcmp(d, "perl", 4)) | |
2541 | { | |
2542 | break; | |
2543 | } | |
2544 | } | |
2545 | if (d < ipath) | |
2546 | d = Nullch; | |
2547 | } | |
2548 | #endif | |
2549 | } | |
44a8e56a | 2550 | #ifdef ALTERNATE_SHEBANG |
2551 | /* | |
2552 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2553 | * character that can be part of a Perl expression, then if | |
2554 | * we see it but not "perl", we're probably looking at the | |
2555 | * start of Perl code, not a request to hand off to some | |
2556 | * other interpreter. Similarly, if "perl" is there, but | |
2557 | * not in the first 'word' of the line, we assume the line | |
2558 | * contains the start of the Perl program. | |
44a8e56a | 2559 | */ |
2560 | if (d && *s != '#') { | |
774d564b | 2561 | char *c = ipath; |
44a8e56a | 2562 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2563 | c++; | |
2564 | if (c < d) | |
2565 | d = Nullch; /* "perl" not in first word; ignore */ | |
2566 | else | |
2567 | *s = '#'; /* Don't try to parse shebang line */ | |
2568 | } | |
774d564b | 2569 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2570 | if (!d && |
44a8e56a | 2571 | *s == '#' && |
774d564b | 2572 | ipathend > ipath && |
3280af22 | 2573 | !PL_minus_c && |
748a9306 | 2574 | !instr(s,"indir") && |
3280af22 | 2575 | instr(PL_origargv[0],"perl")) |
748a9306 | 2576 | { |
9f68db38 | 2577 | char **newargv; |
9f68db38 | 2578 | |
774d564b | 2579 | *ipathend = '\0'; |
2580 | s = ipathend + 1; | |
3280af22 | 2581 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2582 | s++; |
3280af22 NIS |
2583 | if (s < PL_bufend) { |
2584 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2585 | newargv[1] = s; |
3280af22 | 2586 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2587 | s++; |
2588 | *s = '\0'; | |
3280af22 | 2589 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2590 | } |
2591 | else | |
3280af22 | 2592 | newargv = PL_origargv; |
774d564b | 2593 | newargv[0] = ipath; |
80252599 | 2594 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2595 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2596 | } |
748a9306 | 2597 | if (d) { |
3280af22 NIS |
2598 | U32 oldpdb = PL_perldb; |
2599 | bool oldn = PL_minus_n; | |
2600 | bool oldp = PL_minus_p; | |
748a9306 LW |
2601 | |
2602 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2603 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2604 | |
2605 | if (*d++ == '-') { | |
8cc95fdb | 2606 | do { |
2607 | if (*d == 'M' || *d == 'm') { | |
2608 | char *m = d; | |
2609 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2610 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2611 | (int)(d - m), m); |
2612 | } | |
2613 | d = moreswitches(d); | |
2614 | } while (d); | |
155aba94 GS |
2615 | if ((PERLDB_LINE && !oldpdb) || |
2616 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2617 | /* if we have already added "LINE: while (<>) {", |
2618 | we must not do it again */ | |
748a9306 | 2619 | { |
3280af22 NIS |
2620 | sv_setpv(PL_linestr, ""); |
2621 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2622 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2623 | PL_preambled = FALSE; | |
84902520 | 2624 | if (PERLDB_LINE) |
3280af22 | 2625 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2626 | goto retry; |
2627 | } | |
a0d0e21e | 2628 | } |
79072805 | 2629 | } |
9f68db38 | 2630 | } |
79072805 | 2631 | } |
3280af22 NIS |
2632 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2633 | PL_bufptr = s; | |
2634 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2635 | return yylex(); |
ae986130 | 2636 | } |
378cc40b | 2637 | goto retry; |
4fdae800 | 2638 | case '\r': |
6a27c188 | 2639 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2640 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2641 | Perl_croak(aTHX_ | |
54310121 | 2642 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2643 | #endif |
4fdae800 | 2644 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2645 | s++; |
2646 | goto retry; | |
378cc40b | 2647 | case '#': |
e929a76b | 2648 | case '\n': |
3280af22 NIS |
2649 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2650 | d = PL_bufend; | |
a687059c | 2651 | while (s < d && *s != '\n') |
378cc40b | 2652 | s++; |
0f85fab0 | 2653 | if (s < d) |
378cc40b | 2654 | s++; |
463ee0b2 | 2655 | incline(s); |
3280af22 NIS |
2656 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2657 | PL_bufptr = s; | |
2658 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2659 | return yylex(); |
a687059c | 2660 | } |
378cc40b | 2661 | } |
a687059c | 2662 | else { |
378cc40b | 2663 | *s = '\0'; |
3280af22 | 2664 | PL_bufend = s; |
a687059c | 2665 | } |
378cc40b LW |
2666 | goto retry; |
2667 | case '-': | |
79072805 | 2668 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2669 | s++; |
3280af22 | 2670 | PL_bufptr = s; |
748a9306 LW |
2671 | tmp = *s++; |
2672 | ||
3280af22 | 2673 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2674 | s++; |
2675 | ||
2676 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2677 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2678 | OPERATOR('-'); /* unary minus */ |
2679 | } | |
3280af22 NIS |
2680 | PL_last_uni = PL_oldbufptr; |
2681 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2682 | switch (tmp) { |
79072805 LW |
2683 | case 'r': FTST(OP_FTEREAD); |
2684 | case 'w': FTST(OP_FTEWRITE); | |
2685 | case 'x': FTST(OP_FTEEXEC); | |
2686 | case 'o': FTST(OP_FTEOWNED); | |
2687 | case 'R': FTST(OP_FTRREAD); | |
2688 | case 'W': FTST(OP_FTRWRITE); | |
2689 | case 'X': FTST(OP_FTREXEC); | |
2690 | case 'O': FTST(OP_FTROWNED); | |
2691 | case 'e': FTST(OP_FTIS); | |
2692 | case 'z': FTST(OP_FTZERO); | |
2693 | case 's': FTST(OP_FTSIZE); | |
2694 | case 'f': FTST(OP_FTFILE); | |
2695 | case 'd': FTST(OP_FTDIR); | |
2696 | case 'l': FTST(OP_FTLINK); | |
2697 | case 'p': FTST(OP_FTPIPE); | |
2698 | case 'S': FTST(OP_FTSOCK); | |
2699 | case 'u': FTST(OP_FTSUID); | |
2700 | case 'g': FTST(OP_FTSGID); | |
2701 | case 'k': FTST(OP_FTSVTX); | |
2702 | case 'b': FTST(OP_FTBLK); | |
2703 | case 'c': FTST(OP_FTCHR); | |
2704 | case 't': FTST(OP_FTTTY); | |
2705 | case 'T': FTST(OP_FTTEXT); | |
2706 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2707 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2708 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2709 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2710 | default: |
cea2e8a9 | 2711 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2712 | break; |
2713 | } | |
2714 | } | |
a687059c LW |
2715 | tmp = *s++; |
2716 | if (*s == tmp) { | |
2717 | s++; | |
3280af22 | 2718 | if (PL_expect == XOPERATOR) |
79072805 LW |
2719 | TERM(POSTDEC); |
2720 | else | |
2721 | OPERATOR(PREDEC); | |
2722 | } | |
2723 | else if (*s == '>') { | |
2724 | s++; | |
2725 | s = skipspace(s); | |
7e2040f0 | 2726 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2727 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2728 | TOKEN(ARROW); |
79072805 | 2729 | } |
748a9306 LW |
2730 | else if (*s == '$') |
2731 | OPERATOR(ARROW); | |
463ee0b2 | 2732 | else |
748a9306 | 2733 | TERM(ARROW); |
a687059c | 2734 | } |
3280af22 | 2735 | if (PL_expect == XOPERATOR) |
79072805 LW |
2736 | Aop(OP_SUBTRACT); |
2737 | else { | |
3280af22 | 2738 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2739 | check_uni(); |
79072805 | 2740 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2741 | } |
79072805 | 2742 | |
378cc40b | 2743 | case '+': |
a687059c LW |
2744 | tmp = *s++; |
2745 | if (*s == tmp) { | |
378cc40b | 2746 | s++; |
3280af22 | 2747 | if (PL_expect == XOPERATOR) |
79072805 LW |
2748 | TERM(POSTINC); |
2749 | else | |
2750 | OPERATOR(PREINC); | |
378cc40b | 2751 | } |
3280af22 | 2752 | if (PL_expect == XOPERATOR) |
79072805 LW |
2753 | Aop(OP_ADD); |
2754 | else { | |
3280af22 | 2755 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2756 | check_uni(); |
a687059c | 2757 | OPERATOR('+'); |
2f3197b3 | 2758 | } |
a687059c | 2759 | |
378cc40b | 2760 | case '*': |
3280af22 NIS |
2761 | if (PL_expect != XOPERATOR) { |
2762 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2763 | PL_expect = XOPERATOR; | |
2764 | force_ident(PL_tokenbuf, '*'); | |
2765 | if (!*PL_tokenbuf) | |
a0d0e21e | 2766 | PREREF('*'); |
79072805 | 2767 | TERM('*'); |
a687059c | 2768 | } |
79072805 LW |
2769 | s++; |
2770 | if (*s == '*') { | |
a687059c | 2771 | s++; |
79072805 | 2772 | PWop(OP_POW); |
a687059c | 2773 | } |
79072805 LW |
2774 | Mop(OP_MULTIPLY); |
2775 | ||
378cc40b | 2776 | case '%': |
3280af22 | 2777 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2778 | ++s; |
2779 | Mop(OP_MODULO); | |
a687059c | 2780 | } |
3280af22 NIS |
2781 | PL_tokenbuf[0] = '%'; |
2782 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2783 | if (!PL_tokenbuf[1]) { | |
2784 | if (s == PL_bufend) | |
bbce6d69 | 2785 | yyerror("Final % should be \\% or %name"); |
2786 | PREREF('%'); | |
a687059c | 2787 | } |
3280af22 | 2788 | PL_pending_ident = '%'; |
bbce6d69 | 2789 | TERM('%'); |
a687059c | 2790 | |
378cc40b | 2791 | case '^': |
79072805 | 2792 | s++; |
a0d0e21e | 2793 | BOop(OP_BIT_XOR); |
79072805 | 2794 | case '[': |
3280af22 | 2795 | PL_lex_brackets++; |
79072805 | 2796 | /* FALL THROUGH */ |
378cc40b | 2797 | case '~': |
378cc40b | 2798 | case ',': |
378cc40b LW |
2799 | tmp = *s++; |
2800 | OPERATOR(tmp); | |
a0d0e21e LW |
2801 | case ':': |
2802 | if (s[1] == ':') { | |
2803 | len = 0; | |
2804 | goto just_a_word; | |
2805 | } | |
2806 | s++; | |
09bef843 SB |
2807 | switch (PL_expect) { |
2808 | OP *attrs; | |
2809 | case XOPERATOR: | |
2810 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2811 | break; | |
2812 | PL_bufptr = s; /* update in case we back off */ | |
2813 | goto grabattrs; | |
2814 | case XATTRBLOCK: | |
2815 | PL_expect = XBLOCK; | |
2816 | goto grabattrs; | |
2817 | case XATTRTERM: | |
2818 | PL_expect = XTERMBLOCK; | |
2819 | grabattrs: | |
2820 | s = skipspace(s); | |
2821 | attrs = Nullop; | |
7e2040f0 | 2822 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2823 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2824 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2825 | if (tmp < 0) tmp = -tmp; | |
2826 | switch (tmp) { | |
2827 | case KEY_or: | |
2828 | case KEY_and: | |
2829 | case KEY_for: | |
2830 | case KEY_unless: | |
2831 | case KEY_if: | |
2832 | case KEY_while: | |
2833 | case KEY_until: | |
2834 | goto got_attrs; | |
2835 | default: | |
2836 | break; | |
2837 | } | |
2838 | } | |
09bef843 SB |
2839 | if (*d == '(') { |
2840 | d = scan_str(d,TRUE,TRUE); | |
2841 | if (!d) { | |
2842 | if (PL_lex_stuff) { | |
2843 | SvREFCNT_dec(PL_lex_stuff); | |
2844 | PL_lex_stuff = Nullsv; | |
2845 | } | |
2846 | /* MUST advance bufptr here to avoid bogus | |
2847 | "at end of line" context messages from yyerror(). | |
2848 | */ | |
2849 | PL_bufptr = s + len; | |
2850 | yyerror("Unterminated attribute parameter in attribute list"); | |
2851 | if (attrs) | |
2852 | op_free(attrs); | |
2853 | return 0; /* EOF indicator */ | |
2854 | } | |
2855 | } | |
2856 | if (PL_lex_stuff) { | |
2857 | SV *sv = newSVpvn(s, len); | |
2858 | sv_catsv(sv, PL_lex_stuff); | |
2859 | attrs = append_elem(OP_LIST, attrs, | |
2860 | newSVOP(OP_CONST, 0, sv)); | |
2861 | SvREFCNT_dec(PL_lex_stuff); | |
2862 | PL_lex_stuff = Nullsv; | |
2863 | } | |
2864 | else { | |
2865 | attrs = append_elem(OP_LIST, attrs, | |
2866 | newSVOP(OP_CONST, 0, | |
2867 | newSVpvn(s, len))); | |
2868 | } | |
2869 | s = skipspace(d); | |
0120eecf | 2870 | if (*s == ':' && s[1] != ':') |
09bef843 | 2871 | s = skipspace(s+1); |
0120eecf GS |
2872 | else if (s == d) |
2873 | break; /* require real whitespace or :'s */ | |
09bef843 | 2874 | } |
f9829d6b GS |
2875 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
2876 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
2877 | char q = ((*s == '\'') ? '"' : '\''); |
2878 | /* If here for an expression, and parsed no attrs, back off. */ | |
2879 | if (tmp == '=' && !attrs) { | |
2880 | s = PL_bufptr; | |
2881 | break; | |
2882 | } | |
2883 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2884 | context messages from yyerror(). | |
2885 | */ | |
2886 | PL_bufptr = s; | |
2887 | if (!*s) | |
2888 | yyerror("Unterminated attribute list"); | |
2889 | else | |
2890 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2891 | q, *s, q)); | |
2892 | if (attrs) | |
2893 | op_free(attrs); | |
2894 | OPERATOR(':'); | |
2895 | } | |
f9829d6b | 2896 | got_attrs: |
09bef843 SB |
2897 | if (attrs) { |
2898 | PL_nextval[PL_nexttoke].opval = attrs; | |
2899 | force_next(THING); | |
2900 | } | |
2901 | TOKEN(COLONATTR); | |
2902 | } | |
a0d0e21e | 2903 | OPERATOR(':'); |
8990e307 LW |
2904 | case '(': |
2905 | s++; | |
3280af22 NIS |
2906 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2907 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2908 | else |
3280af22 | 2909 | PL_expect = XTERM; |
a0d0e21e | 2910 | TOKEN('('); |
378cc40b | 2911 | case ';': |
57843af0 GS |
2912 | if (CopLINE(PL_curcop) < PL_copline) |
2913 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2914 | tmp = *s++; |
2915 | OPERATOR(tmp); | |
2916 | case ')': | |
378cc40b | 2917 | tmp = *s++; |
16d20bd9 AD |
2918 | s = skipspace(s); |
2919 | if (*s == '{') | |
2920 | PREBLOCK(tmp); | |
378cc40b | 2921 | TERM(tmp); |
79072805 LW |
2922 | case ']': |
2923 | s++; | |
3280af22 | 2924 | if (PL_lex_brackets <= 0) |
d98d5fff | 2925 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2926 | else |
3280af22 NIS |
2927 | --PL_lex_brackets; |
2928 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2929 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2930 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2931 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2932 | } |
2933 | } | |
4633a7c4 | 2934 | TERM(']'); |
79072805 LW |
2935 | case '{': |
2936 | leftbracket: | |
79072805 | 2937 | s++; |
3280af22 NIS |
2938 | if (PL_lex_brackets > 100) { |
2939 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2940 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2941 | SAVEFREEPV(newlb); |
3280af22 | 2942 | PL_lex_brackstack = newlb; |
8990e307 LW |
2943 | } |
2944 | } | |
3280af22 | 2945 | switch (PL_expect) { |
a0d0e21e | 2946 | case XTERM: |
3280af22 | 2947 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2948 | s--; |
2949 | PRETERMBLOCK(DO); | |
2950 | } | |
3280af22 NIS |
2951 | if (PL_oldoldbufptr == PL_last_lop) |
2952 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2953 | else |
3280af22 | 2954 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2955 | OPERATOR(HASHBRACK); |
a0d0e21e | 2956 | case XOPERATOR: |
3280af22 | 2957 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2958 | s++; |
44a8e56a | 2959 | d = s; |
3280af22 NIS |
2960 | PL_tokenbuf[0] = '\0'; |
2961 | if (d < PL_bufend && *d == '-') { | |
2962 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2963 | d++; |
3280af22 | 2964 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2965 | d++; |
2966 | } | |
7e2040f0 | 2967 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 2968 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2969 | FALSE, &len); |
3280af22 | 2970 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2971 | d++; |
2972 | if (*d == '}') { | |
3280af22 | 2973 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2974 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2975 | if (minus) | |
2976 | force_next('-'); | |
748a9306 LW |
2977 | } |
2978 | } | |
2979 | /* FALL THROUGH */ | |
09bef843 | 2980 | case XATTRBLOCK: |
748a9306 | 2981 | case XBLOCK: |
3280af22 NIS |
2982 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2983 | PL_expect = XSTATE; | |
a0d0e21e | 2984 | break; |
09bef843 | 2985 | case XATTRTERM: |
a0d0e21e | 2986 | case XTERMBLOCK: |
3280af22 NIS |
2987 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2988 | PL_expect = XSTATE; | |
a0d0e21e LW |
2989 | break; |
2990 | default: { | |
2991 | char *t; | |
3280af22 NIS |
2992 | if (PL_oldoldbufptr == PL_last_lop) |
2993 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2994 | else |
3280af22 | 2995 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2996 | s = skipspace(s); |
09ecc4b6 | 2997 | if (*s == '}') |
a0d0e21e | 2998 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2999 | /* This hack serves to disambiguate a pair of curlies |
3000 | * as being a block or an anon hash. Normally, expectation | |
3001 | * determines that, but in cases where we're not in a | |
3002 | * position to expect anything in particular (like inside | |
3003 | * eval"") we have to resolve the ambiguity. This code | |
3004 | * covers the case where the first term in the curlies is a | |
3005 | * quoted string. Most other cases need to be explicitly | |
3006 | * disambiguated by prepending a `+' before the opening | |
3007 | * curly in order to force resolution as an anon hash. | |
3008 | * | |
3009 | * XXX should probably propagate the outer expectation | |
3010 | * into eval"" to rely less on this hack, but that could | |
3011 | * potentially break current behavior of eval"". | |
3012 | * GSAR 97-07-21 | |
3013 | */ | |
3014 | t = s; | |
3015 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3016 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3017 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3018 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3019 | t++; | |
3020 | t++; | |
a0d0e21e | 3021 | } |
b8a4b1be | 3022 | else if (*s == 'q') { |
3280af22 | 3023 | if (++t < PL_bufend |
b8a4b1be | 3024 | && (!isALNUM(*t) |
3280af22 | 3025 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3026 | && !isALNUM(*t)))) |
3027 | { | |
b8a4b1be GS |
3028 | char *tmps; |
3029 | char open, close, term; | |
3030 | I32 brackets = 1; | |
3031 | ||
3280af22 | 3032 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3033 | t++; |
3034 | term = *t; | |
3035 | open = term; | |
3036 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3037 | term = tmps[5]; | |
3038 | close = term; | |
3039 | if (open == close) | |
3280af22 NIS |
3040 | for (t++; t < PL_bufend; t++) { |
3041 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3042 | t++; |
6d07e5e9 | 3043 | else if (*t == open) |
b8a4b1be GS |
3044 | break; |
3045 | } | |
3046 | else | |
3280af22 NIS |
3047 | for (t++; t < PL_bufend; t++) { |
3048 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3049 | t++; |
6d07e5e9 | 3050 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3051 | break; |
3052 | else if (*t == open) | |
3053 | brackets++; | |
3054 | } | |
3055 | } | |
3056 | t++; | |
a0d0e21e | 3057 | } |
7e2040f0 | 3058 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3059 | t += UTF8SKIP(t); |
7e2040f0 | 3060 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3061 | t += UTF8SKIP(t); |
a0d0e21e | 3062 | } |
3280af22 | 3063 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3064 | t++; |
b8a4b1be GS |
3065 | /* if comma follows first term, call it an anon hash */ |
3066 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3067 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3068 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3069 | OPERATOR(HASHBRACK); |
3280af22 | 3070 | if (PL_expect == XREF) |
4e4e412b | 3071 | PL_expect = XTERM; |
a0d0e21e | 3072 | else { |
3280af22 NIS |
3073 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3074 | PL_expect = XSTATE; | |
a0d0e21e | 3075 | } |
8990e307 | 3076 | } |
a0d0e21e | 3077 | break; |
463ee0b2 | 3078 | } |
57843af0 | 3079 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3080 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3081 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3082 | TOKEN('{'); |
378cc40b | 3083 | case '}': |
79072805 LW |
3084 | rightbracket: |
3085 | s++; | |
3280af22 | 3086 | if (PL_lex_brackets <= 0) |
d98d5fff | 3087 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3088 | else |
3280af22 NIS |
3089 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
3090 | if (PL_lex_brackets < PL_lex_formbrack) | |
3091 | PL_lex_formbrack = 0; | |
3092 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3093 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3094 | if (PL_expect & XFAKEBRACK) { |
3095 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3096 | PL_lex_state = LEX_INTERPEND; |
3097 | PL_bufptr = s; | |
cea2e8a9 | 3098 | return yylex(); /* ignore fake brackets */ |
79072805 | 3099 | } |
fa83b5b6 | 3100 | if (*s == '-' && s[1] == '>') |
3280af22 | 3101 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3102 | else if (*s != '[' && *s != '{') |
3280af22 | 3103 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3104 | } |
3105 | } | |
9059aa12 LW |
3106 | if (PL_expect & XFAKEBRACK) { |
3107 | PL_expect &= XENUMMASK; | |
3280af22 | 3108 | PL_bufptr = s; |
cea2e8a9 | 3109 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3110 | } |
79072805 LW |
3111 | force_next('}'); |
3112 | TOKEN(';'); | |
378cc40b LW |
3113 | case '&': |
3114 | s++; | |
3115 | tmp = *s++; | |
3116 | if (tmp == '&') | |
a0d0e21e | 3117 | AOPERATOR(ANDAND); |
378cc40b | 3118 | s--; |
3280af22 | 3119 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3120 | if (ckWARN(WARN_SEMICOLON) |
3121 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3122 | { | |
57843af0 | 3123 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3124 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3125 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3126 | } |
79072805 | 3127 | BAop(OP_BIT_AND); |
463ee0b2 | 3128 | } |
79072805 | 3129 | |
3280af22 NIS |
3130 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3131 | if (*PL_tokenbuf) { | |
3132 | PL_expect = XOPERATOR; | |
3133 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3134 | } |
79072805 LW |
3135 | else |
3136 | PREREF('&'); | |
c07a80fd | 3137 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3138 | TERM('&'); |
3139 | ||
378cc40b LW |
3140 | case '|': |
3141 | s++; | |
3142 | tmp = *s++; | |
3143 | if (tmp == '|') | |
a0d0e21e | 3144 | AOPERATOR(OROR); |
378cc40b | 3145 | s--; |
79072805 | 3146 | BOop(OP_BIT_OR); |
378cc40b LW |
3147 | case '=': |
3148 | s++; | |
3149 | tmp = *s++; | |
3150 | if (tmp == '=') | |
79072805 LW |
3151 | Eop(OP_EQ); |
3152 | if (tmp == '>') | |
3153 | OPERATOR(','); | |
378cc40b | 3154 | if (tmp == '~') |
79072805 | 3155 | PMop(OP_MATCH); |
599cee73 | 3156 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3157 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3158 | s--; |
3280af22 NIS |
3159 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3160 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3161 | { |
3280af22 NIS |
3162 | if (PL_in_eval && !PL_rsfp) { |
3163 | d = PL_bufend; | |
a5f75d66 AD |
3164 | while (s < d) { |
3165 | if (*s++ == '\n') { | |
3166 | incline(s); | |
3167 | if (strnEQ(s,"=cut",4)) { | |
3168 | s = strchr(s,'\n'); | |
3169 | if (s) | |
3170 | s++; | |
3171 | else | |
3172 | s = d; | |
3173 | incline(s); | |
3174 | goto retry; | |
3175 | } | |
3176 | } | |
3177 | } | |
3178 | goto retry; | |
3179 | } | |
3280af22 NIS |
3180 | s = PL_bufend; |
3181 | PL_doextract = TRUE; | |
a0d0e21e LW |
3182 | goto retry; |
3183 | } | |
3280af22 | 3184 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3185 | char *t; |
51882d45 | 3186 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3187 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3188 | #else |
3189 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3190 | #endif | |
a0d0e21e LW |
3191 | if (*t == '\n' || *t == '#') { |
3192 | s--; | |
3280af22 | 3193 | PL_expect = XBLOCK; |
a0d0e21e LW |
3194 | goto leftbracket; |
3195 | } | |
79072805 | 3196 | } |
a0d0e21e LW |
3197 | yylval.ival = 0; |
3198 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3199 | case '!': |
3200 | s++; | |
3201 | tmp = *s++; | |
3202 | if (tmp == '=') | |
79072805 | 3203 | Eop(OP_NE); |
378cc40b | 3204 | if (tmp == '~') |
79072805 | 3205 | PMop(OP_NOT); |
378cc40b LW |
3206 | s--; |
3207 | OPERATOR('!'); | |
3208 | case '<': | |
3280af22 | 3209 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3210 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3211 | check_uni(); |
79072805 LW |
3212 | if (s[1] == '<') |
3213 | s = scan_heredoc(s); | |
3214 | else | |
3215 | s = scan_inputsymbol(s); | |
3216 | TERM(sublex_start()); | |
378cc40b LW |
3217 | } |
3218 | s++; | |
3219 | tmp = *s++; | |
3220 | if (tmp == '<') | |
79072805 | 3221 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3222 | if (tmp == '=') { |
3223 | tmp = *s++; | |
3224 | if (tmp == '>') | |
79072805 | 3225 | Eop(OP_NCMP); |
395c3793 | 3226 | s--; |
79072805 | 3227 | Rop(OP_LE); |
395c3793 | 3228 | } |
378cc40b | 3229 | s--; |
79072805 | 3230 | Rop(OP_LT); |
378cc40b LW |
3231 | case '>': |
3232 | s++; | |
3233 | tmp = *s++; | |
3234 | if (tmp == '>') | |
79072805 | 3235 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3236 | if (tmp == '=') |
79072805 | 3237 | Rop(OP_GE); |
378cc40b | 3238 | s--; |
79072805 | 3239 | Rop(OP_GT); |
378cc40b LW |
3240 | |
3241 | case '$': | |
bbce6d69 | 3242 | CLINE; |
3243 | ||
3280af22 NIS |
3244 | if (PL_expect == XOPERATOR) { |
3245 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3246 | PL_expect = XTERM; | |
a0d0e21e | 3247 | depcom(); |
bbce6d69 | 3248 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3249 | } |
8990e307 | 3250 | } |
a0d0e21e | 3251 | |
7e2040f0 | 3252 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3253 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3254 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3255 | sizeof PL_tokenbuf - 1, FALSE); | |
3256 | if (PL_expect == XOPERATOR) | |
3257 | no_op("Array length", s); | |
3280af22 | 3258 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3259 | PREREF(DOLSHARP); |
3280af22 NIS |
3260 | PL_expect = XOPERATOR; |
3261 | PL_pending_ident = '#'; | |
463ee0b2 | 3262 | TOKEN(DOLSHARP); |
79072805 | 3263 | } |
bbce6d69 | 3264 | |
3280af22 | 3265 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3266 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3267 | sizeof PL_tokenbuf - 1, FALSE); | |
3268 | if (PL_expect == XOPERATOR) | |
3269 | no_op("Scalar", s); | |
3280af22 NIS |
3270 | if (!PL_tokenbuf[1]) { |
3271 | if (s == PL_bufend) | |
bbce6d69 | 3272 | yyerror("Final $ should be \\$ or $name"); |
3273 | PREREF('$'); | |
8990e307 | 3274 | } |
a0d0e21e | 3275 | |
bbce6d69 | 3276 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3277 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3278 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3279 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3280 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3281 | TERM(THING); | |
3282 | } | |
3283 | ||
ff68c719 | 3284 | d = s; |
69d2bceb | 3285 | tmp = (I32)*s; |
3280af22 | 3286 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3287 | s = skipspace(s); |
3288 | ||
3280af22 | 3289 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3290 | char *t; |
3291 | if (*s == '[') { | |
3280af22 | 3292 | PL_tokenbuf[0] = '@'; |
599cee73 | 3293 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3294 | for(t = s + 1; |
7e2040f0 | 3295 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3296 | t++) ; |
a0d0e21e | 3297 | if (*t++ == ',') { |
3280af22 NIS |
3298 | PL_bufptr = skipspace(PL_bufptr); |
3299 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3300 | t++; |
cea2e8a9 | 3301 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3302 | "Multidimensional syntax %.*s not supported", |
3303 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3304 | } |
3305 | } | |
bbce6d69 | 3306 | } |
3307 | else if (*s == '{') { | |
3280af22 | 3308 | PL_tokenbuf[0] = '%'; |
599cee73 | 3309 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3310 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3311 | { | |
3280af22 | 3312 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3313 | STRLEN len; |
3314 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3315 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3316 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3317 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3318 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3319 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3320 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3321 | } |
93a17b20 LW |
3322 | } |
3323 | } | |
2f3197b3 | 3324 | } |
bbce6d69 | 3325 | |
3280af22 | 3326 | PL_expect = XOPERATOR; |
69d2bceb | 3327 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3328 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3329 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3330 | PL_expect = XOPERATOR; | |
bbce6d69 | 3331 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3332 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3333 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3334 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3335 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3336 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3337 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3338 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3339 | /* binary operators exclude handle interpretations */ |
3340 | switch (tmp) { | |
3341 | case -KEY_x: | |
3342 | case -KEY_eq: | |
3343 | case -KEY_ne: | |
3344 | case -KEY_gt: | |
3345 | case -KEY_lt: | |
3346 | case -KEY_ge: | |
3347 | case -KEY_le: | |
3348 | case -KEY_cmp: | |
3349 | break; | |
3350 | default: | |
3280af22 | 3351 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3352 | break; |
3353 | } | |
3354 | } | |
68dc0745 | 3355 | else { |
3356 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3357 | if (gv && GvCVu(gv)) | |
3280af22 | 3358 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3359 | } |
93a17b20 | 3360 | } |
bbce6d69 | 3361 | else if (isDIGIT(*s)) |
3280af22 | 3362 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3363 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3364 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3365 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3366 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3367 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3368 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3369 | } |
3280af22 | 3370 | PL_pending_ident = '$'; |
79072805 | 3371 | TOKEN('$'); |
378cc40b LW |
3372 | |
3373 | case '@': | |
3280af22 | 3374 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3375 | no_op("Array", s); |
3280af22 NIS |
3376 | PL_tokenbuf[0] = '@'; |
3377 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3378 | if (!PL_tokenbuf[1]) { | |
3379 | if (s == PL_bufend) | |
bbce6d69 | 3380 | yyerror("Final @ should be \\@ or @name"); |
3381 | PREREF('@'); | |
3382 | } | |
3280af22 | 3383 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3384 | s = skipspace(s); |
3280af22 | 3385 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3386 | if (*s == '{') |
3280af22 | 3387 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3388 | |
3389 | /* Warn about @ where they meant $. */ | |
599cee73 | 3390 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3391 | if (*s == '[' || *s == '{') { |
3392 | char *t = s + 1; | |
7e2040f0 | 3393 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3394 | t++; |
3395 | if (*t == '}' || *t == ']') { | |
3396 | t++; | |
3280af22 | 3397 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3398 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3399 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3400 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3401 | } |
93a17b20 LW |
3402 | } |
3403 | } | |
463ee0b2 | 3404 | } |
3280af22 | 3405 | PL_pending_ident = '@'; |
79072805 | 3406 | TERM('@'); |
378cc40b LW |
3407 | |
3408 | case '/': /* may either be division or pattern */ | |
3409 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3410 | if (PL_expect != XOPERATOR) { |
c277df42 | 3411 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3412 | if (PL_oldoldbufptr == PL_last_uni |
3413 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3414 | || memNE(PL_last_uni, "study", 5) |
3415 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3416 | check_uni(); |
8782bef2 | 3417 | s = scan_pat(s,OP_MATCH); |
79072805 | 3418 | TERM(sublex_start()); |
378cc40b LW |
3419 | } |
3420 | tmp = *s++; | |
a687059c | 3421 | if (tmp == '/') |
79072805 | 3422 | Mop(OP_DIVIDE); |
378cc40b LW |
3423 | OPERATOR(tmp); |
3424 | ||
3425 | case '.': | |
51882d45 GS |
3426 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3427 | #ifdef PERL_STRICT_CR | |
3428 | && s[1] == '\n' | |
3429 | #else | |
3430 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3431 | #endif | |
3432 | && (s == PL_linestart || s[-1] == '\n') ) | |
3433 | { | |
3280af22 NIS |
3434 | PL_lex_formbrack = 0; |
3435 | PL_expect = XSTATE; | |
79072805 LW |
3436 | goto rightbracket; |
3437 | } | |
3280af22 | 3438 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3439 | tmp = *s++; |
a687059c LW |
3440 | if (*s == tmp) { |
3441 | s++; | |
2f3197b3 LW |
3442 | if (*s == tmp) { |
3443 | s++; | |
79072805 | 3444 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3445 | } |
3446 | else | |
79072805 | 3447 | yylval.ival = 0; |
378cc40b | 3448 | OPERATOR(DOTDOT); |
a687059c | 3449 | } |
3280af22 | 3450 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3451 | check_uni(); |
79072805 | 3452 | Aop(OP_CONCAT); |
378cc40b LW |
3453 | } |
3454 | /* FALL THROUGH */ | |
3455 | case '0': case '1': case '2': case '3': case '4': | |
3456 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3457 | s = scan_num(s); |
3280af22 | 3458 | if (PL_expect == XOPERATOR) |
8990e307 | 3459 | no_op("Number",s); |
79072805 LW |
3460 | TERM(THING); |
3461 | ||
3462 | case '\'': | |
09bef843 | 3463 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3464 | if (PL_expect == XOPERATOR) { |
3465 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3466 | PL_expect = XTERM; | |
a0d0e21e LW |
3467 | depcom(); |
3468 | return ','; /* grandfather non-comma-format format */ | |
3469 | } | |
463ee0b2 | 3470 | else |
8990e307 | 3471 | no_op("String",s); |
463ee0b2 | 3472 | } |
79072805 | 3473 | if (!s) |
85e6fe83 | 3474 | missingterm((char*)0); |
79072805 LW |
3475 | yylval.ival = OP_CONST; |
3476 | TERM(sublex_start()); | |
3477 | ||
3478 | case '"': | |
09bef843 | 3479 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3480 | if (PL_expect == XOPERATOR) { |
3481 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3482 | PL_expect = XTERM; | |
a0d0e21e LW |
3483 | depcom(); |
3484 | return ','; /* grandfather non-comma-format format */ | |
3485 | } | |
463ee0b2 | 3486 | else |
8990e307 | 3487 | no_op("String",s); |
463ee0b2 | 3488 | } |
79072805 | 3489 | if (!s) |
85e6fe83 | 3490 | missingterm((char*)0); |
4633a7c4 | 3491 | yylval.ival = OP_CONST; |
3280af22 | 3492 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3493 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3494 | yylval.ival = OP_STRINGIFY; |
3495 | break; | |
3496 | } | |
3497 | } | |
79072805 LW |
3498 | TERM(sublex_start()); |
3499 | ||
3500 | case '`': | |
09bef843 | 3501 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3502 | if (PL_expect == XOPERATOR) |
8990e307 | 3503 | no_op("Backticks",s); |
79072805 | 3504 | if (!s) |
85e6fe83 | 3505 | missingterm((char*)0); |
79072805 LW |
3506 | yylval.ival = OP_BACKTICK; |
3507 | set_csh(); | |
3508 | TERM(sublex_start()); | |
3509 | ||
3510 | case '\\': | |
3511 | s++; | |
599cee73 | 3512 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3513 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3514 | *s, *s); |
3280af22 | 3515 | if (PL_expect == XOPERATOR) |
8990e307 | 3516 | no_op("Backslash",s); |
79072805 LW |
3517 | OPERATOR(REFGEN); |
3518 | ||
a7cb1f99 | 3519 | case 'v': |
e526c9e6 | 3520 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3521 | char *start = s; |
3522 | start++; | |
3523 | start++; | |
dd629d5b | 3524 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3525 | start++; |
3526 | if (*start == '.' && isDIGIT(start[1])) { | |
3527 | s = scan_num(s); | |
3528 | TERM(THING); | |
3529 | } | |
e526c9e6 GS |
3530 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
3531 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF)) { | |
3532 | char c = *start; | |
3533 | GV *gv; | |
3534 | *start = '\0'; | |
3535 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3536 | *start = c; | |
3537 | if (!gv) { | |
3538 | s = scan_num(s); | |
3539 | TERM(THING); | |
3540 | } | |
3541 | } | |
a7cb1f99 GS |
3542 | } |
3543 | goto keylookup; | |
79072805 | 3544 | case 'x': |
3280af22 | 3545 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3546 | s++; |
3547 | Mop(OP_REPEAT); | |
2f3197b3 | 3548 | } |
79072805 LW |
3549 | goto keylookup; |
3550 | ||
378cc40b | 3551 | case '_': |
79072805 LW |
3552 | case 'a': case 'A': |
3553 | case 'b': case 'B': | |
3554 | case 'c': case 'C': | |
3555 | case 'd': case 'D': | |
3556 | case 'e': case 'E': | |
3557 | case 'f': case 'F': | |
3558 | case 'g': case 'G': | |
3559 | case 'h': case 'H': | |
3560 | case 'i': case 'I': | |
3561 | case 'j': case 'J': | |
3562 | case 'k': case 'K': | |
3563 | case 'l': case 'L': | |
3564 | case 'm': case 'M': | |
3565 | case 'n': case 'N': | |
3566 | case 'o': case 'O': | |
3567 | case 'p': case 'P': | |
3568 | case 'q': case 'Q': | |
3569 | case 'r': case 'R': | |
3570 | case 's': case 'S': | |
3571 | case 't': case 'T': | |
3572 | case 'u': case 'U': | |
a7cb1f99 | 3573 | case 'V': |
79072805 LW |
3574 | case 'w': case 'W': |
3575 | case 'X': | |
3576 | case 'y': case 'Y': | |
3577 | case 'z': case 'Z': | |
3578 | ||
49dc05e3 | 3579 | keylookup: { |
161b471a NIS |
3580 | gv = Nullgv; |
3581 | gvp = 0; | |
49dc05e3 | 3582 | |
3280af22 NIS |
3583 | PL_bufptr = s; |
3584 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3585 | |
3586 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3587 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3588 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3589 | (PL_tokenbuf[0] == 'q' && | |
3590 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3591 | |
3592 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3593 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3594 | goto just_a_word; |
3595 | ||
3643fb5f | 3596 | d = s; |
3280af22 | 3597 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3598 | d++; /* no comments skipped here, or s### is misparsed */ |
3599 | ||
3600 | /* Is this a label? */ | |
3280af22 NIS |
3601 | if (!tmp && PL_expect == XSTATE |
3602 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3603 | s = d + 1; |
3280af22 | 3604 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3605 | CLINE; |
3606 | TOKEN(LABEL); | |
3643fb5f CS |
3607 | } |
3608 | ||
3609 | /* Check for keywords */ | |
3280af22 | 3610 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3611 | |
3612 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3613 | if (strnEQ(d,"=>",2)) { |
3614 | CLINE; | |
3280af22 | 3615 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3616 | yylval.opval->op_private = OPpCONST_BARE; |
3617 | TERM(WORD); | |
3618 | } | |
3619 | ||
a0d0e21e | 3620 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3621 | GV *ogv = Nullgv; /* override (winner) */ |
3622 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3623 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3624 | CV *cv; |
3280af22 | 3625 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3626 | (cv = GvCVu(gv))) |
3627 | { | |
3628 | if (GvIMPORTED_CV(gv)) | |
3629 | ogv = gv; | |
3630 | else if (! CvMETHOD(cv)) | |
3631 | hgv = gv; | |
3632 | } | |
3633 | if (!ogv && | |
3280af22 NIS |
3634 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3635 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3636 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3637 | { | |
3638 | ogv = gv; | |
3639 | } | |
3640 | } | |
3641 | if (ogv) { | |
3642 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3643 | } |
3644 | else if (gv && !gvp | |
3645 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3646 | && GvCVu(gv) |
3280af22 | 3647 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3648 | { |
3649 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3650 | } |
56f7f34b CS |
3651 | else { /* no override */ |
3652 | tmp = -tmp; | |
3653 | gv = Nullgv; | |
3654 | gvp = 0; | |
4944e2f7 GS |
3655 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3656 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3657 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3658 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3659 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3660 | } |
a0d0e21e LW |
3661 | } |
3662 | ||
3663 | reserved_word: | |
3664 | switch (tmp) { | |
79072805 LW |
3665 | |
3666 | default: /* not a keyword */ | |
93a17b20 | 3667 | just_a_word: { |
96e4d5b1 | 3668 | SV *sv; |
3280af22 | 3669 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3670 | |
3671 | /* Get the rest if it looks like a package qualifier */ | |
3672 | ||
155aba94 | 3673 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3674 | STRLEN morelen; |
3280af22 | 3675 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3676 | TRUE, &morelen); |
3677 | if (!morelen) | |
cea2e8a9 | 3678 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3679 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3680 | len += morelen; |
a0d0e21e | 3681 | } |
8990e307 | 3682 | |
3280af22 NIS |
3683 | if (PL_expect == XOPERATOR) { |
3684 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3685 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3686 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3687 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3688 | } |
3689 | else | |
54310121 | 3690 | no_op("Bareword",s); |
463ee0b2 | 3691 | } |
8990e307 | 3692 | |
c3e0f903 GS |
3693 | /* Look for a subroutine with this name in current package, |
3694 | unless name is "Foo::", in which case Foo is a bearword | |
3695 | (and a package name). */ | |
3696 | ||
3697 | if (len > 2 && | |
3280af22 | 3698 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3699 | { |
e476b1b5 GS |
3700 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3701 | Perl_warner(aTHX_ WARN_BAREWORD, | |
599cee73 | 3702 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3703 | PL_tokenbuf); |
c3e0f903 | 3704 | len -= 2; |
3280af22 | 3705 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3706 | gv = Nullgv; |
3707 | gvp = 0; | |
3708 | } | |
3709 | else { | |
3710 | len = 0; | |
3711 | if (!gv) | |
3280af22 | 3712 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3713 | } |
3714 | ||
3715 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3716 | |
49dc05e3 | 3717 | if (gvp) { |
79cb57f6 | 3718 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3719 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3720 | } |
3721 | else | |
3280af22 | 3722 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3723 | |
a0d0e21e LW |
3724 | /* Presume this is going to be a bareword of some sort. */ |
3725 | ||
3726 | CLINE; | |
49dc05e3 | 3727 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3728 | yylval.opval->op_private = OPpCONST_BARE; |
3729 | ||
c3e0f903 GS |
3730 | /* And if "Foo::", then that's what it certainly is. */ |
3731 | ||
3732 | if (len) | |
3733 | goto safe_bareword; | |
3734 | ||
8990e307 LW |
3735 | /* See if it's the indirect object for a list operator. */ |
3736 | ||
3280af22 NIS |
3737 | if (PL_oldoldbufptr && |
3738 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3739 | (PL_oldoldbufptr == PL_last_lop |
3740 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3741 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3742 | (PL_expect == XREF || |
3743 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3744 | { |
748a9306 LW |
3745 | bool immediate_paren = *s == '('; |
3746 | ||
a0d0e21e LW |
3747 | /* (Now we can afford to cross potential line boundary.) */ |
3748 | s = skipspace(s); | |
3749 | ||
3750 | /* Two barewords in a row may indicate method call. */ | |
3751 | ||
7e2040f0 | 3752 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3753 | return tmp; |
3754 | ||
3755 | /* If not a declared subroutine, it's an indirect object. */ | |
3756 | /* (But it's an indir obj regardless for sort.) */ | |
3757 | ||
3280af22 | 3758 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3759 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3760 | (PL_last_lop_op != OP_MAPSTART && | |
3761 | PL_last_lop_op != OP_GREPSTART)) | |
3762 | { | |
3280af22 | 3763 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3764 | goto bareword; |
93a17b20 LW |
3765 | } |
3766 | } | |
8990e307 LW |
3767 | |
3768 | /* If followed by a paren, it's certainly a subroutine. */ | |
3769 | ||
3280af22 | 3770 | PL_expect = XOPERATOR; |
8990e307 | 3771 | s = skipspace(s); |
93a17b20 | 3772 | if (*s == '(') { |
79072805 | 3773 | CLINE; |
96e4d5b1 | 3774 | if (gv && GvCVu(gv)) { |
3775 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3776 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3777 | s = d + 1; |
3778 | goto its_constant; | |
3779 | } | |
3780 | } | |
3280af22 NIS |
3781 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3782 | PL_expect = XOPERATOR; | |
93a17b20 | 3783 | force_next(WORD); |
c07a80fd | 3784 | yylval.ival = 0; |
463ee0b2 | 3785 | TOKEN('&'); |
79072805 | 3786 | } |
93a17b20 | 3787 | |
a0d0e21e | 3788 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3789 | |
8ebc5c01 | 3790 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3791 | PL_last_lop = PL_oldbufptr; |
3792 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3793 | PREBLOCK(METHOD); |
463ee0b2 LW |
3794 | } |
3795 | ||
8990e307 LW |
3796 | /* If followed by a bareword, see if it looks like indir obj. */ |
3797 | ||
7e2040f0 | 3798 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3799 | return tmp; |
93a17b20 | 3800 | |
8990e307 LW |
3801 | /* Not a method, so call it a subroutine (if defined) */ |
3802 | ||
8ebc5c01 | 3803 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3804 | CV* cv; |
0453d815 PM |
3805 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3806 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3807 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3808 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3809 | /* Check for a constant sub */ |
46fc3d4c | 3810 | cv = GvCV(gv); |
96e4d5b1 | 3811 | if ((sv = cv_const_sv(cv))) { |
3812 | its_constant: | |
3813 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3814 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3815 | yylval.opval->op_private = 0; | |
3816 | TOKEN(WORD); | |
89bfa8cd | 3817 | } |
3818 | ||
a5f75d66 AD |
3819 | /* Resolve to GV now. */ |
3820 | op_free(yylval.opval); | |
3821 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3822 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3823 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3824 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3825 | /* Is there a prototype? */ |
3826 | if (SvPOK(cv)) { | |
3827 | STRLEN len; | |
7a52d87a | 3828 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3829 | if (!len) |
3830 | TERM(FUNC0SUB); | |
7a52d87a | 3831 | if (strEQ(proto, "$")) |
4633a7c4 | 3832 | OPERATOR(UNIOPSUB); |
7a52d87a | 3833 | if (*proto == '&' && *s == '{') { |
3280af22 | 3834 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3835 | PREBLOCK(LSTOPSUB); |
3836 | } | |
a9ef352a | 3837 | } |
3280af22 NIS |
3838 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3839 | PL_expect = XTERM; | |
8990e307 LW |
3840 | force_next(WORD); |
3841 | TOKEN(NOAMP); | |
3842 | } | |
748a9306 | 3843 | |
8990e307 LW |
3844 | /* Call it a bare word */ |
3845 | ||
5603f27d GS |
3846 | if (PL_hints & HINT_STRICT_SUBS) |
3847 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3848 | else { | |
3849 | bareword: | |
3850 | if (ckWARN(WARN_RESERVED)) { | |
3851 | if (lastchar != '-') { | |
3852 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3853 | if (!*d) | |
cea2e8a9 | 3854 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3855 | PL_tokenbuf); |
3856 | } | |
748a9306 LW |
3857 | } |
3858 | } | |
c3e0f903 GS |
3859 | |
3860 | safe_bareword: | |
f248d071 | 3861 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3862 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3863 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3864 | lastchar, PL_tokenbuf); |
0453d815 PM |
3865 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3866 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3867 | lastchar, lastchar); |
3868 | } | |
93a17b20 | 3869 | TOKEN(WORD); |
79072805 | 3870 | } |
79072805 | 3871 | |
68dc0745 | 3872 | case KEY___FILE__: |
46fc3d4c | 3873 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3874 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3875 | TERM(THING); |
3876 | ||
79072805 | 3877 | case KEY___LINE__: |
cf2093f6 | 3878 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3879 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3880 | TERM(THING); |
68dc0745 | 3881 | |
3882 | case KEY___PACKAGE__: | |
3883 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3884 | (PL_curstash |
3885 | ? newSVsv(PL_curstname) | |
3886 | : &PL_sv_undef)); | |
79072805 | 3887 | TERM(THING); |
79072805 | 3888 | |
e50aee73 | 3889 | case KEY___DATA__: |
79072805 LW |
3890 | case KEY___END__: { |
3891 | GV *gv; | |
79072805 LW |
3892 | |
3893 | /*SUPPRESS 560*/ | |
3280af22 | 3894 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3895 | char *pname = "main"; |
3280af22 NIS |
3896 | if (PL_tokenbuf[2] == 'D') |
3897 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3898 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3899 | GvMULTI_on(gv); |
79072805 | 3900 | if (!GvIO(gv)) |
a0d0e21e | 3901 | GvIOp(gv) = newIO(); |
3280af22 | 3902 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3903 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3904 | { | |
3280af22 | 3905 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3906 | fcntl(fd,F_SETFD,fd >= 3); |
3907 | } | |
79072805 | 3908 | #endif |
fd049845 | 3909 | /* Mark this internal pseudo-handle as clean */ |
3910 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3911 | if (PL_preprocess) |
a0d0e21e | 3912 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3913 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3914 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3915 | else |
a0d0e21e | 3916 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3917 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3918 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 3919 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 3920 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
3921 | if (PL_bufend-PL_bufptr > 2 |
3922 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
3923 | { |
3924 | Off_t loc = 0; | |
3925 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3926 | loc = PerlIO_tell(PL_rsfp); | |
3927 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3928 | } | |
3929 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3930 | #if defined(__BORLANDC__) | |
3931 | /* XXX see note in do_binmode() */ | |
3932 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3933 | #endif | |
3934 | if (loc > 0) | |
3935 | PerlIO_seek(PL_rsfp, loc, 0); | |
3936 | } | |
3937 | } | |
3938 | #endif | |
3280af22 | 3939 | PL_rsfp = Nullfp; |
79072805 LW |
3940 | } |
3941 | goto fake_eof; | |
e929a76b | 3942 | } |
de3bb511 | 3943 | |
8990e307 | 3944 | case KEY_AUTOLOAD: |
ed6116ce | 3945 | case KEY_DESTROY: |
79072805 | 3946 | case KEY_BEGIN: |
7d30b5c4 | 3947 | case KEY_CHECK: |
7d07dbc2 | 3948 | case KEY_INIT: |
7d30b5c4 | 3949 | case KEY_END: |
3280af22 NIS |
3950 | if (PL_expect == XSTATE) { |
3951 | s = PL_bufptr; | |
93a17b20 | 3952 | goto really_sub; |
79072805 LW |
3953 | } |
3954 | goto just_a_word; | |
3955 | ||
a0d0e21e LW |
3956 | case KEY_CORE: |
3957 | if (*s == ':' && s[1] == ':') { | |
3958 | s += 2; | |
748a9306 | 3959 | d = s; |
3280af22 | 3960 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
3961 | if (!(tmp = keyword(PL_tokenbuf, len))) |
3962 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
3963 | if (tmp < 0) |
3964 | tmp = -tmp; | |
3965 | goto reserved_word; | |
3966 | } | |
3967 | goto just_a_word; | |
3968 | ||
463ee0b2 LW |
3969 | case KEY_abs: |
3970 | UNI(OP_ABS); | |
3971 | ||
79072805 LW |
3972 | case KEY_alarm: |
3973 | UNI(OP_ALARM); | |
3974 | ||
3975 | case KEY_accept: | |
a0d0e21e | 3976 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3977 | |
463ee0b2 LW |
3978 | case KEY_and: |
3979 | OPERATOR(ANDOP); | |
3980 | ||
79072805 | 3981 | case KEY_atan2: |
a0d0e21e | 3982 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3983 | |
79072805 | 3984 | case KEY_bind: |
a0d0e21e | 3985 | LOP(OP_BIND,XTERM); |
79072805 LW |
3986 | |
3987 | case KEY_binmode: | |
1c1fc3ea | 3988 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
3989 | |
3990 | case KEY_bless: | |
a0d0e21e | 3991 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3992 | |
3993 | case KEY_chop: | |
3994 | UNI(OP_CHOP); | |
3995 | ||
3996 | case KEY_continue: | |
3997 | PREBLOCK(CONTINUE); | |
3998 | ||
3999 | case KEY_chdir: | |
85e6fe83 | 4000 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4001 | UNI(OP_CHDIR); |
4002 | ||
4003 | case KEY_close: | |
4004 | UNI(OP_CLOSE); | |
4005 | ||
4006 | case KEY_closedir: | |
4007 | UNI(OP_CLOSEDIR); | |
4008 | ||
4009 | case KEY_cmp: | |
4010 | Eop(OP_SCMP); | |
4011 | ||
4012 | case KEY_caller: | |
4013 | UNI(OP_CALLER); | |
4014 | ||
4015 | case KEY_crypt: | |
4016 | #ifdef FCRYPT | |
f4c556ac GS |
4017 | if (!PL_cryptseen) { |
4018 | PL_cryptseen = TRUE; | |
de3bb511 | 4019 | init_des(); |
f4c556ac | 4020 | } |
a687059c | 4021 | #endif |
a0d0e21e | 4022 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4023 | |
4024 | case KEY_chmod: | |
e476b1b5 | 4025 | if (ckWARN(WARN_CHMOD)) { |
3280af22 | 4026 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 4027 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4028 | Perl_warner(aTHX_ WARN_CHMOD, |
5a211162 | 4029 | "chmod() mode argument is missing initial 0"); |
748a9306 | 4030 | } |
a0d0e21e | 4031 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4032 | |
4033 | case KEY_chown: | |
a0d0e21e | 4034 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4035 | |
4036 | case KEY_connect: | |
a0d0e21e | 4037 | LOP(OP_CONNECT,XTERM); |
79072805 | 4038 | |
463ee0b2 LW |
4039 | case KEY_chr: |
4040 | UNI(OP_CHR); | |
4041 | ||
79072805 LW |
4042 | case KEY_cos: |
4043 | UNI(OP_COS); | |
4044 | ||
4045 | case KEY_chroot: | |
4046 | UNI(OP_CHROOT); | |
4047 | ||
4048 | case KEY_do: | |
4049 | s = skipspace(s); | |
4050 | if (*s == '{') | |
a0d0e21e | 4051 | PRETERMBLOCK(DO); |
79072805 | 4052 | if (*s != '\'') |
a0d0e21e | 4053 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 4054 | OPERATOR(DO); |
79072805 LW |
4055 | |
4056 | case KEY_die: | |
3280af22 | 4057 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4058 | LOP(OP_DIE,XTERM); |
79072805 LW |
4059 | |
4060 | case KEY_defined: | |
4061 | UNI(OP_DEFINED); | |
4062 | ||
4063 | case KEY_delete: | |
a0d0e21e | 4064 | UNI(OP_DELETE); |
79072805 LW |
4065 | |
4066 | case KEY_dbmopen: | |
a0d0e21e LW |
4067 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4068 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4069 | |
4070 | case KEY_dbmclose: | |
4071 | UNI(OP_DBMCLOSE); | |
4072 | ||
4073 | case KEY_dump: | |
a0d0e21e | 4074 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4075 | LOOPX(OP_DUMP); |
4076 | ||
4077 | case KEY_else: | |
4078 | PREBLOCK(ELSE); | |
4079 | ||
4080 | case KEY_elsif: | |
57843af0 | 4081 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4082 | OPERATOR(ELSIF); |
4083 | ||
4084 | case KEY_eq: | |
4085 | Eop(OP_SEQ); | |
4086 | ||
a0d0e21e LW |
4087 | case KEY_exists: |
4088 | UNI(OP_EXISTS); | |
4089 | ||
79072805 LW |
4090 | case KEY_exit: |
4091 | UNI(OP_EXIT); | |
4092 | ||
4093 | case KEY_eval: | |
79072805 | 4094 | s = skipspace(s); |
3280af22 | 4095 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4096 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4097 | |
4098 | case KEY_eof: | |
4099 | UNI(OP_EOF); | |
4100 | ||
4101 | case KEY_exp: | |
4102 | UNI(OP_EXP); | |
4103 | ||
4104 | case KEY_each: | |
4105 | UNI(OP_EACH); | |
4106 | ||
4107 | case KEY_exec: | |
4108 | set_csh(); | |
a0d0e21e | 4109 | LOP(OP_EXEC,XREF); |
79072805 LW |
4110 | |
4111 | case KEY_endhostent: | |
4112 | FUN0(OP_EHOSTENT); | |
4113 | ||
4114 | case KEY_endnetent: | |
4115 | FUN0(OP_ENETENT); | |
4116 | ||
4117 | case KEY_endservent: | |
4118 | FUN0(OP_ESERVENT); | |
4119 | ||
4120 | case KEY_endprotoent: | |
4121 | FUN0(OP_EPROTOENT); | |
4122 | ||
4123 | case KEY_endpwent: | |
4124 | FUN0(OP_EPWENT); | |
4125 | ||
4126 | case KEY_endgrent: | |
4127 | FUN0(OP_EGRENT); | |
4128 | ||
4129 | case KEY_for: | |
4130 | case KEY_foreach: | |
57843af0 | 4131 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4132 | s = skipspace(s); |
7e2040f0 | 4133 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4134 | char *p = s; |
3280af22 | 4135 | if ((PL_bufend - p) >= 3 && |
55497cff | 4136 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4137 | p += 2; | |
77ca0c92 LW |
4138 | else if ((PL_bufend - p) >= 4 && |
4139 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4140 | p += 3; | |
55497cff | 4141 | p = skipspace(p); |
7e2040f0 | 4142 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4143 | p = scan_ident(p, PL_bufend, |
4144 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4145 | p = skipspace(p); | |
4146 | } | |
4147 | if (*p != '$') | |
cea2e8a9 | 4148 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4149 | } |
79072805 LW |
4150 | OPERATOR(FOR); |
4151 | ||
4152 | case KEY_formline: | |
a0d0e21e | 4153 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4154 | |
4155 | case KEY_fork: | |
4156 | FUN0(OP_FORK); | |
4157 | ||
4158 | case KEY_fcntl: | |
a0d0e21e | 4159 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4160 | |
4161 | case KEY_fileno: | |
4162 | UNI(OP_FILENO); | |
4163 | ||
4164 | case KEY_flock: | |
a0d0e21e | 4165 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4166 | |
4167 | case KEY_gt: | |
4168 | Rop(OP_SGT); | |
4169 | ||
4170 | case KEY_ge: | |
4171 | Rop(OP_SGE); | |
4172 | ||
4173 | case KEY_grep: | |
2c38e13d | 4174 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4175 | |
4176 | case KEY_goto: | |
a0d0e21e | 4177 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4178 | LOOPX(OP_GOTO); |
4179 | ||
4180 | case KEY_gmtime: | |
4181 | UNI(OP_GMTIME); | |
4182 | ||
4183 | case KEY_getc: | |
4184 | UNI(OP_GETC); | |
4185 | ||
4186 | case KEY_getppid: | |
4187 | FUN0(OP_GETPPID); | |
4188 | ||
4189 | case KEY_getpgrp: | |
4190 | UNI(OP_GETPGRP); | |
4191 | ||
4192 | case KEY_getpriority: | |
a0d0e21e | 4193 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4194 | |
4195 | case KEY_getprotobyname: | |
4196 | UNI(OP_GPBYNAME); | |
4197 | ||
4198 | case KEY_getprotobynumber: | |
a0d0e21e | 4199 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4200 | |
4201 | case KEY_getprotoent: | |
4202 | FUN0(OP_GPROTOENT); | |
4203 | ||
4204 | case KEY_getpwent: | |
4205 | FUN0(OP_GPWENT); | |
4206 | ||
4207 | case KEY_getpwnam: | |
ff68c719 | 4208 | UNI(OP_GPWNAM); |
79072805 LW |
4209 | |
4210 | case KEY_getpwuid: | |
ff68c719 | 4211 | UNI(OP_GPWUID); |
79072805 LW |
4212 | |
4213 | case KEY_getpeername: | |
4214 | UNI(OP_GETPEERNAME); | |
4215 | ||
4216 | case KEY_gethostbyname: | |
4217 | UNI(OP_GHBYNAME); | |
4218 | ||
4219 | case KEY_gethostbyaddr: | |
a0d0e21e | 4220 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4221 | |
4222 | case KEY_gethostent: | |
4223 | FUN0(OP_GHOSTENT); | |
4224 | ||
4225 | case KEY_getnetbyname: | |
4226 | UNI(OP_GNBYNAME); | |
4227 | ||
4228 | case KEY_getnetbyaddr: | |
a0d0e21e | 4229 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4230 | |
4231 | case KEY_getnetent: | |
4232 | FUN0(OP_GNETENT); | |
4233 | ||
4234 | case KEY_getservbyname: | |
a0d0e21e | 4235 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4236 | |
4237 | case KEY_getservbyport: | |
a0d0e21e | 4238 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4239 | |
4240 | case KEY_getservent: | |
4241 | FUN0(OP_GSERVENT); | |
4242 | ||
4243 | case KEY_getsockname: | |
4244 | UNI(OP_GETSOCKNAME); | |
4245 | ||
4246 | case KEY_getsockopt: | |
a0d0e21e | 4247 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4248 | |
4249 | case KEY_getgrent: | |
4250 | FUN0(OP_GGRENT); | |
4251 | ||
4252 | case KEY_getgrnam: | |
ff68c719 | 4253 | UNI(OP_GGRNAM); |
79072805 LW |
4254 | |
4255 | case KEY_getgrgid: | |
ff68c719 | 4256 | UNI(OP_GGRGID); |
79072805 LW |
4257 | |
4258 | case KEY_getlogin: | |
4259 | FUN0(OP_GETLOGIN); | |
4260 | ||
93a17b20 | 4261 | case KEY_glob: |
a0d0e21e LW |
4262 | set_csh(); |
4263 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4264 | |
79072805 LW |
4265 | case KEY_hex: |
4266 | UNI(OP_HEX); | |
4267 | ||
4268 | case KEY_if: | |
57843af0 | 4269 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4270 | OPERATOR(IF); |
4271 | ||
4272 | case KEY_index: | |
a0d0e21e | 4273 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4274 | |
4275 | case KEY_int: | |
4276 | UNI(OP_INT); | |
4277 | ||
4278 | case KEY_ioctl: | |
a0d0e21e | 4279 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4280 | |
4281 | case KEY_join: | |
a0d0e21e | 4282 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4283 | |
4284 | case KEY_keys: | |
4285 | UNI(OP_KEYS); | |
4286 | ||
4287 | case KEY_kill: | |
a0d0e21e | 4288 | LOP(OP_KILL,XTERM); |
79072805 LW |
4289 | |
4290 | case KEY_last: | |
a0d0e21e | 4291 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4292 | LOOPX(OP_LAST); |
a0d0e21e | 4293 | |
79072805 LW |
4294 | case KEY_lc: |
4295 | UNI(OP_LC); | |
4296 | ||
4297 | case KEY_lcfirst: | |
4298 | UNI(OP_LCFIRST); | |
4299 | ||
4300 | case KEY_local: | |
09bef843 | 4301 | yylval.ival = 0; |
79072805 LW |
4302 | OPERATOR(LOCAL); |
4303 | ||
4304 | case KEY_length: | |
4305 | UNI(OP_LENGTH); | |
4306 | ||
4307 | case KEY_lt: | |
4308 | Rop(OP_SLT); | |
4309 | ||
4310 | case KEY_le: | |
4311 | Rop(OP_SLE); | |
4312 | ||
4313 | case KEY_localtime: | |
4314 | UNI(OP_LOCALTIME); | |
4315 | ||
4316 | case KEY_log: | |
4317 | UNI(OP_LOG); | |
4318 | ||
4319 | case KEY_link: | |
a0d0e21e | 4320 | LOP(OP_LINK,XTERM); |
79072805 LW |
4321 | |
4322 | case KEY_listen: | |
a0d0e21e | 4323 | LOP(OP_LISTEN,XTERM); |
79072805 | 4324 | |
c0329465 MB |
4325 | case KEY_lock: |
4326 | UNI(OP_LOCK); | |
4327 | ||
79072805 LW |
4328 | case KEY_lstat: |
4329 | UNI(OP_LSTAT); | |
4330 | ||
4331 | case KEY_m: | |
8782bef2 | 4332 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4333 | TERM(sublex_start()); |
4334 | ||
a0d0e21e | 4335 | case KEY_map: |
2c38e13d | 4336 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4337 | |
79072805 | 4338 | case KEY_mkdir: |
a0d0e21e | 4339 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4340 | |
4341 | case KEY_msgctl: | |
a0d0e21e | 4342 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4343 | |
4344 | case KEY_msgget: | |
a0d0e21e | 4345 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4346 | |
4347 | case KEY_msgrcv: | |
a0d0e21e | 4348 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4349 | |
4350 | case KEY_msgsnd: | |
a0d0e21e | 4351 | LOP(OP_MSGSND,XTERM); |
79072805 | 4352 | |
77ca0c92 | 4353 | case KEY_our: |
93a17b20 | 4354 | case KEY_my: |
77ca0c92 | 4355 | PL_in_my = tmp; |
c750a3ec | 4356 | s = skipspace(s); |
7e2040f0 | 4357 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4358 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4359 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4360 | goto really_sub; | |
3280af22 NIS |
4361 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4362 | if (!PL_in_my_stash) { | |
c750a3ec | 4363 | char tmpbuf[1024]; |
3280af22 NIS |
4364 | PL_bufptr = s; |
4365 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4366 | yyerror(tmpbuf); |
4367 | } | |
4368 | } | |
09bef843 | 4369 | yylval.ival = 1; |
55497cff | 4370 | OPERATOR(MY); |
93a17b20 | 4371 | |
79072805 | 4372 | case KEY_next: |
a0d0e21e | 4373 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4374 | LOOPX(OP_NEXT); |
4375 | ||
4376 | case KEY_ne: | |
4377 | Eop(OP_SNE); | |
4378 | ||
a0d0e21e | 4379 | case KEY_no: |
3280af22 | 4380 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4381 | yyerror("\"no\" not allowed in expression"); |
4382 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4383 | s = force_version(s); |
a0d0e21e LW |
4384 | yylval.ival = 0; |
4385 | OPERATOR(USE); | |
4386 | ||
4387 | case KEY_not: | |
2d2e263d LW |
4388 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4389 | FUN1(OP_NOT); | |
4390 | else | |
4391 | OPERATOR(NOTOP); | |
a0d0e21e | 4392 | |
79072805 | 4393 | case KEY_open: |
93a17b20 | 4394 | s = skipspace(s); |
7e2040f0 | 4395 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4396 | char *t; |
7e2040f0 | 4397 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4398 | t = skipspace(d); |
e476b1b5 GS |
4399 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4400 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4401 | "Precedence problem: open %.*s should be open(%.*s)", |
4402 | d-s,s, d-s,s); | |
93a17b20 | 4403 | } |
a0d0e21e | 4404 | LOP(OP_OPEN,XTERM); |
79072805 | 4405 | |
463ee0b2 | 4406 | case KEY_or: |
a0d0e21e | 4407 | yylval.ival = OP_OR; |
463ee0b2 LW |
4408 | OPERATOR(OROP); |
4409 | ||
79072805 LW |
4410 | case KEY_ord: |
4411 | UNI(OP_ORD); | |
4412 | ||
4413 | case KEY_oct: | |
4414 | UNI(OP_OCT); | |
4415 | ||
4416 | case KEY_opendir: | |
a0d0e21e | 4417 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4418 | |
4419 | case KEY_print: | |
3280af22 | 4420 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4421 | LOP(OP_PRINT,XREF); |
79072805 LW |
4422 | |
4423 | case KEY_printf: | |
3280af22 | 4424 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4425 | LOP(OP_PRTF,XREF); |
79072805 | 4426 | |
c07a80fd | 4427 | case KEY_prototype: |
4428 | UNI(OP_PROTOTYPE); | |
4429 | ||
79072805 | 4430 | case KEY_push: |
a0d0e21e | 4431 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4432 | |
4433 | case KEY_pop: | |
4434 | UNI(OP_POP); | |
4435 | ||
a0d0e21e LW |
4436 | case KEY_pos: |
4437 | UNI(OP_POS); | |
4438 | ||
79072805 | 4439 | case KEY_pack: |
a0d0e21e | 4440 | LOP(OP_PACK,XTERM); |
79072805 LW |
4441 | |
4442 | case KEY_package: | |
a0d0e21e | 4443 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4444 | OPERATOR(PACKAGE); |
4445 | ||
4446 | case KEY_pipe: | |
a0d0e21e | 4447 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4448 | |
4449 | case KEY_q: | |
09bef843 | 4450 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4451 | if (!s) |
85e6fe83 | 4452 | missingterm((char*)0); |
79072805 LW |
4453 | yylval.ival = OP_CONST; |
4454 | TERM(sublex_start()); | |
4455 | ||
a0d0e21e LW |
4456 | case KEY_quotemeta: |
4457 | UNI(OP_QUOTEMETA); | |
4458 | ||
8990e307 | 4459 | case KEY_qw: |
09bef843 | 4460 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4461 | if (!s) |
85e6fe83 | 4462 | missingterm((char*)0); |
8127e0e3 GS |
4463 | force_next(')'); |
4464 | if (SvCUR(PL_lex_stuff)) { | |
4465 | OP *words = Nullop; | |
4466 | int warned = 0; | |
3280af22 | 4467 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4468 | while (len) { |
4469 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4470 | if (len) { | |
4471 | char *b = d; | |
e476b1b5 | 4472 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4473 | for (; !isSPACE(*d) && len; --len, ++d) { |
4474 | if (*d == ',') { | |
e476b1b5 | 4475 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4476 | "Possible attempt to separate words with commas"); |
4477 | ++warned; | |
4478 | } | |
4479 | else if (*d == '#') { | |
e476b1b5 | 4480 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4481 | "Possible attempt to put comments in qw() list"); |
4482 | ++warned; | |
4483 | } | |
4484 | } | |
4485 | } | |
4486 | else { | |
4487 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4488 | } | |
4489 | words = append_elem(OP_LIST, words, | |
4490 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4491 | } |
4492 | } | |
8127e0e3 GS |
4493 | if (words) { |
4494 | PL_nextval[PL_nexttoke].opval = words; | |
4495 | force_next(THING); | |
4496 | } | |
55497cff | 4497 | } |
8127e0e3 GS |
4498 | if (PL_lex_stuff) |
4499 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4500 | PL_lex_stuff = Nullsv; |
3280af22 | 4501 | PL_expect = XTERM; |
8127e0e3 | 4502 | TOKEN('('); |
8990e307 | 4503 | |
79072805 | 4504 | case KEY_qq: |
09bef843 | 4505 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4506 | if (!s) |
85e6fe83 | 4507 | missingterm((char*)0); |
a0d0e21e | 4508 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4509 | if (SvIVX(PL_lex_stuff) == '\'') |
4510 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4511 | TERM(sublex_start()); |
4512 | ||
8782bef2 GB |
4513 | case KEY_qr: |
4514 | s = scan_pat(s,OP_QR); | |
4515 | TERM(sublex_start()); | |
4516 | ||
79072805 | 4517 | case KEY_qx: |
09bef843 | 4518 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4519 | if (!s) |
85e6fe83 | 4520 | missingterm((char*)0); |
79072805 LW |
4521 | yylval.ival = OP_BACKTICK; |
4522 | set_csh(); | |
4523 | TERM(sublex_start()); | |
4524 | ||
4525 | case KEY_return: | |
4526 | OLDLOP(OP_RETURN); | |
4527 | ||
4528 | case KEY_require: | |
a7cb1f99 GS |
4529 | s = skipspace(s); |
4530 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4531 | s = force_version(s); | |
4532 | } | |
4533 | else { | |
4534 | *PL_tokenbuf = '\0'; | |
4535 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4536 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4537 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4538 | else if (*s == '<') | |
4539 | yyerror("<> should be quotes"); | |
4540 | } | |
463ee0b2 | 4541 | UNI(OP_REQUIRE); |
79072805 LW |
4542 | |
4543 | case KEY_reset: | |
4544 | UNI(OP_RESET); | |
4545 | ||
4546 | case KEY_redo: | |
a0d0e21e | 4547 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4548 | LOOPX(OP_REDO); |
4549 | ||
4550 | case KEY_rename: | |
a0d0e21e | 4551 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4552 | |
4553 | case KEY_rand: | |
4554 | UNI(OP_RAND); | |
4555 | ||
4556 | case KEY_rmdir: | |
4557 | UNI(OP_RMDIR); | |
4558 | ||
4559 | case KEY_rindex: | |
a0d0e21e | 4560 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4561 | |
4562 | case KEY_read: | |
a0d0e21e | 4563 | LOP(OP_READ,XTERM); |
79072805 LW |
4564 | |
4565 | case KEY_readdir: | |
4566 | UNI(OP_READDIR); | |
4567 | ||
93a17b20 LW |
4568 | case KEY_readline: |
4569 | set_csh(); | |
4570 | UNI(OP_READLINE); | |
4571 | ||
4572 | case KEY_readpipe: | |
4573 | set_csh(); | |
4574 | UNI(OP_BACKTICK); | |
4575 | ||
79072805 LW |
4576 | case KEY_rewinddir: |
4577 | UNI(OP_REWINDDIR); | |
4578 | ||
4579 | case KEY_recv: | |
a0d0e21e | 4580 | LOP(OP_RECV,XTERM); |
79072805 LW |
4581 | |
4582 | case KEY_reverse: | |
a0d0e21e | 4583 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4584 | |
4585 | case KEY_readlink: | |
4586 | UNI(OP_READLINK); | |
4587 | ||
4588 | case KEY_ref: | |
4589 | UNI(OP_REF); | |
4590 | ||
4591 | case KEY_s: | |
4592 | s = scan_subst(s); | |
4593 | if (yylval.opval) | |
4594 | TERM(sublex_start()); | |
4595 | else | |
4596 | TOKEN(1); /* force error */ | |
4597 | ||
a0d0e21e LW |
4598 | case KEY_chomp: |
4599 | UNI(OP_CHOMP); | |
4600 | ||
79072805 LW |
4601 | case KEY_scalar: |
4602 | UNI(OP_SCALAR); | |
4603 | ||
4604 | case KEY_select: | |
a0d0e21e | 4605 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4606 | |
4607 | case KEY_seek: | |
a0d0e21e | 4608 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4609 | |
4610 | case KEY_semctl: | |
a0d0e21e | 4611 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4612 | |
4613 | case KEY_semget: | |
a0d0e21e | 4614 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4615 | |
4616 | case KEY_semop: | |
a0d0e21e | 4617 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4618 | |
4619 | case KEY_send: | |
a0d0e21e | 4620 | LOP(OP_SEND,XTERM); |
79072805 LW |
4621 | |
4622 | case KEY_setpgrp: | |
a0d0e21e | 4623 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4624 | |
4625 | case KEY_setpriority: | |
a0d0e21e | 4626 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4627 | |
4628 | case KEY_sethostent: | |
ff68c719 | 4629 | UNI(OP_SHOSTENT); |
79072805 LW |
4630 | |
4631 | case KEY_setnetent: | |
ff68c719 | 4632 | UNI(OP_SNETENT); |
79072805 LW |
4633 | |
4634 | case KEY_setservent: | |
ff68c719 | 4635 | UNI(OP_SSERVENT); |
79072805 LW |
4636 | |
4637 | case KEY_setprotoent: | |
ff68c719 | 4638 | UNI(OP_SPROTOENT); |
79072805 LW |
4639 | |
4640 | case KEY_setpwent: | |
4641 | FUN0(OP_SPWENT); | |
4642 | ||
4643 | case KEY_setgrent: | |
4644 | FUN0(OP_SGRENT); | |
4645 | ||
4646 | case KEY_seekdir: | |
a0d0e21e | 4647 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4648 | |
4649 | case KEY_setsockopt: | |
a0d0e21e | 4650 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4651 | |
4652 | case KEY_shift: | |
4653 | UNI(OP_SHIFT); | |
4654 | ||
4655 | case KEY_shmctl: | |
a0d0e21e | 4656 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4657 | |
4658 | case KEY_shmget: | |
a0d0e21e | 4659 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4660 | |
4661 | case KEY_shmread: | |
a0d0e21e | 4662 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4663 | |
4664 | case KEY_shmwrite: | |
a0d0e21e | 4665 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4666 | |
4667 | case KEY_shutdown: | |
a0d0e21e | 4668 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4669 | |
4670 | case KEY_sin: | |
4671 | UNI(OP_SIN); | |
4672 | ||
4673 | case KEY_sleep: | |
4674 | UNI(OP_SLEEP); | |
4675 | ||
4676 | case KEY_socket: | |
a0d0e21e | 4677 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4678 | |
4679 | case KEY_socketpair: | |
a0d0e21e | 4680 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4681 | |
4682 | case KEY_sort: | |
3280af22 | 4683 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4684 | s = skipspace(s); |
4685 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4686 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4687 | PL_expect = XTERM; |
15f0808c | 4688 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4689 | LOP(OP_SORT,XREF); |
79072805 LW |
4690 | |
4691 | case KEY_split: | |
a0d0e21e | 4692 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4693 | |
4694 | case KEY_sprintf: | |
a0d0e21e | 4695 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4696 | |
4697 | case KEY_splice: | |
a0d0e21e | 4698 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4699 | |
4700 | case KEY_sqrt: | |
4701 | UNI(OP_SQRT); | |
4702 | ||
4703 | case KEY_srand: | |
4704 | UNI(OP_SRAND); | |
4705 | ||
4706 | case KEY_stat: | |
4707 | UNI(OP_STAT); | |
4708 | ||
4709 | case KEY_study: | |
79072805 LW |
4710 | UNI(OP_STUDY); |
4711 | ||
4712 | case KEY_substr: | |
a0d0e21e | 4713 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4714 | |
4715 | case KEY_format: | |
4716 | case KEY_sub: | |
93a17b20 | 4717 | really_sub: |
09bef843 | 4718 | { |
3280af22 | 4719 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4720 | SSize_t tboffset; |
09bef843 SB |
4721 | expectation attrful; |
4722 | bool have_name, have_proto; | |
4723 | int key = tmp; | |
4724 | ||
4725 | s = skipspace(s); | |
4726 | ||
7e2040f0 | 4727 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4728 | (*s == ':' && s[1] == ':')) |
4729 | { | |
4730 | PL_expect = XBLOCK; | |
4731 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4732 | /* remember buffer pos'n for later force_word */ |
4733 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4734 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4735 | if (strchr(tmpbuf, ':')) | |
4736 | sv_setpv(PL_subname, tmpbuf); | |
4737 | else { | |
4738 | sv_setsv(PL_subname,PL_curstname); | |
4739 | sv_catpvn(PL_subname,"::",2); | |
4740 | sv_catpvn(PL_subname,tmpbuf,len); | |
4741 | } | |
4742 | s = skipspace(d); | |
4743 | have_name = TRUE; | |
4744 | } | |
463ee0b2 | 4745 | else { |
09bef843 SB |
4746 | if (key == KEY_my) |
4747 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4748 | PL_expect = XTERMBLOCK; | |
4749 | attrful = XATTRTERM; | |
4750 | sv_setpv(PL_subname,"?"); | |
4751 | have_name = FALSE; | |
463ee0b2 | 4752 | } |
4633a7c4 | 4753 | |
09bef843 SB |
4754 | if (key == KEY_format) { |
4755 | if (*s == '=') | |
4756 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4757 | if (have_name) | |
b1b65b59 JH |
4758 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4759 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4760 | OPERATOR(FORMAT); |
4761 | } | |
79072805 | 4762 | |
09bef843 SB |
4763 | /* Look for a prototype */ |
4764 | if (*s == '(') { | |
4765 | char *p; | |
4766 | ||
4767 | s = scan_str(s,FALSE,FALSE); | |
4768 | if (!s) { | |
4769 | if (PL_lex_stuff) | |
4770 | SvREFCNT_dec(PL_lex_stuff); | |
4771 | PL_lex_stuff = Nullsv; | |
4772 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4773 | } | |
4774 | /* strip spaces */ | |
4775 | d = SvPVX(PL_lex_stuff); | |
4776 | tmp = 0; | |
4777 | for (p = d; *p; ++p) { | |
4778 | if (!isSPACE(*p)) | |
4779 | d[tmp++] = *p; | |
4780 | } | |
4781 | d[tmp] = '\0'; | |
4782 | SvCUR(PL_lex_stuff) = tmp; | |
4783 | have_proto = TRUE; | |
68dc0745 | 4784 | |
09bef843 | 4785 | s = skipspace(s); |
4633a7c4 | 4786 | } |
09bef843 SB |
4787 | else |
4788 | have_proto = FALSE; | |
4789 | ||
4790 | if (*s == ':' && s[1] != ':') | |
4791 | PL_expect = attrful; | |
4792 | ||
4793 | if (have_proto) { | |
b1b65b59 JH |
4794 | PL_nextval[PL_nexttoke].opval = |
4795 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4796 | PL_lex_stuff = Nullsv; |
4797 | force_next(THING); | |
68dc0745 | 4798 | } |
09bef843 SB |
4799 | if (!have_name) { |
4800 | sv_setpv(PL_subname,"__ANON__"); | |
4801 | TOKEN(ANONSUB); | |
4633a7c4 | 4802 | } |
b1b65b59 JH |
4803 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4804 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4805 | if (key == KEY_my) |
4806 | TOKEN(MYSUB); | |
4807 | TOKEN(SUB); | |
4633a7c4 | 4808 | } |
79072805 LW |
4809 | |
4810 | case KEY_system: | |
4811 | set_csh(); | |
a0d0e21e | 4812 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4813 | |
4814 | case KEY_symlink: | |
a0d0e21e | 4815 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4816 | |
4817 | case KEY_syscall: | |
a0d0e21e | 4818 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4819 | |
c07a80fd | 4820 | case KEY_sysopen: |
4821 | LOP(OP_SYSOPEN,XTERM); | |
4822 | ||
137443ea | 4823 | case KEY_sysseek: |
4824 | LOP(OP_SYSSEEK,XTERM); | |
4825 | ||
79072805 | 4826 | case KEY_sysread: |
a0d0e21e | 4827 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4828 | |
4829 | case KEY_syswrite: | |
a0d0e21e | 4830 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4831 | |
4832 | case KEY_tr: | |
4833 | s = scan_trans(s); | |
4834 | TERM(sublex_start()); | |
4835 | ||
4836 | case KEY_tell: | |
4837 | UNI(OP_TELL); | |
4838 | ||
4839 | case KEY_telldir: | |
4840 | UNI(OP_TELLDIR); | |
4841 | ||
463ee0b2 | 4842 | case KEY_tie: |
a0d0e21e | 4843 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4844 | |
c07a80fd | 4845 | case KEY_tied: |
4846 | UNI(OP_TIED); | |
4847 | ||
79072805 LW |
4848 | case KEY_time: |
4849 | FUN0(OP_TIME); | |
4850 | ||
4851 | case KEY_times: | |
4852 | FUN0(OP_TMS); | |
4853 | ||
4854 | case KEY_truncate: | |
a0d0e21e | 4855 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4856 | |
4857 | case KEY_uc: | |
4858 | UNI(OP_UC); | |
4859 | ||
4860 | case KEY_ucfirst: | |
4861 | UNI(OP_UCFIRST); | |
4862 | ||
463ee0b2 LW |
4863 | case KEY_untie: |
4864 | UNI(OP_UNTIE); | |
4865 | ||
79072805 | 4866 | case KEY_until: |
57843af0 | 4867 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4868 | OPERATOR(UNTIL); |
4869 | ||
4870 | case KEY_unless: | |
57843af0 | 4871 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4872 | OPERATOR(UNLESS); |
4873 | ||
4874 | case KEY_unlink: | |
a0d0e21e | 4875 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4876 | |
4877 | case KEY_undef: | |
4878 | UNI(OP_UNDEF); | |
4879 | ||
4880 | case KEY_unpack: | |
a0d0e21e | 4881 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4882 | |
4883 | case KEY_utime: | |
a0d0e21e | 4884 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4885 | |
4886 | case KEY_umask: | |
e476b1b5 | 4887 | if (ckWARN(WARN_UMASK)) { |
3280af22 | 4888 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 | 4889 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4890 | Perl_warner(aTHX_ WARN_UMASK, |
4438c4b7 | 4891 | "umask: argument is missing initial 0"); |
748a9306 | 4892 | } |
79072805 LW |
4893 | UNI(OP_UMASK); |
4894 | ||
4895 | case KEY_unshift: | |
a0d0e21e LW |
4896 | LOP(OP_UNSHIFT,XTERM); |
4897 | ||
4898 | case KEY_use: | |
3280af22 | 4899 | if (PL_expect != XSTATE) |
a0d0e21e | 4900 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4901 | s = skipspace(s); |
a7cb1f99 | 4902 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4903 | s = force_version(s); |
a7cb1f99 | 4904 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4905 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4906 | force_next(WORD); |
4907 | } | |
4908 | } | |
4909 | else { | |
4910 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4911 | s = force_version(s); | |
4912 | } | |
a0d0e21e LW |
4913 | yylval.ival = 1; |
4914 | OPERATOR(USE); | |
79072805 LW |
4915 | |
4916 | case KEY_values: | |
4917 | UNI(OP_VALUES); | |
4918 | ||
4919 | case KEY_vec: | |
a0d0e21e | 4920 | LOP(OP_VEC,XTERM); |
79072805 LW |
4921 | |
4922 | case KEY_while: | |
57843af0 | 4923 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4924 | OPERATOR(WHILE); |
4925 | ||
4926 | case KEY_warn: | |
3280af22 | 4927 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4928 | LOP(OP_WARN,XTERM); |
79072805 LW |
4929 | |
4930 | case KEY_wait: | |
4931 | FUN0(OP_WAIT); | |
4932 | ||
4933 | case KEY_waitpid: | |
a0d0e21e | 4934 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4935 | |
4936 | case KEY_wantarray: | |
4937 | FUN0(OP_WANTARRAY); | |
4938 | ||
4939 | case KEY_write: | |
9d116dd7 JH |
4940 | #ifdef EBCDIC |
4941 | { | |
4942 | static char ctl_l[2]; | |
4943 | ||
4944 | if (ctl_l[0] == '\0') | |
4945 | ctl_l[0] = toCTRL('L'); | |
4946 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4947 | } | |
4948 | #else | |
4949 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4950 | #endif | |
79072805 LW |
4951 | UNI(OP_ENTERWRITE); |
4952 | ||
4953 | case KEY_x: | |
3280af22 | 4954 | if (PL_expect == XOPERATOR) |
79072805 LW |
4955 | Mop(OP_REPEAT); |
4956 | check_uni(); | |
4957 | goto just_a_word; | |
4958 | ||
a0d0e21e LW |
4959 | case KEY_xor: |
4960 | yylval.ival = OP_XOR; | |
4961 | OPERATOR(OROP); | |
4962 | ||
79072805 LW |
4963 | case KEY_y: |
4964 | s = scan_trans(s); | |
4965 | TERM(sublex_start()); | |
4966 | } | |
49dc05e3 | 4967 | }} |
79072805 LW |
4968 | } |
4969 | ||
4970 | I32 | |
864dbfa3 | 4971 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4972 | { |
4973 | switch (*d) { | |
4974 | case '_': | |
4975 | if (d[1] == '_') { | |
a0d0e21e | 4976 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4977 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4978 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4979 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4980 | if (strEQ(d,"__END__")) return KEY___END__; |
4981 | } | |
4982 | break; | |
8990e307 LW |
4983 | case 'A': |
4984 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4985 | break; | |
79072805 | 4986 | case 'a': |
463ee0b2 LW |
4987 | switch (len) { |
4988 | case 3: | |
a0d0e21e LW |
4989 | if (strEQ(d,"and")) return -KEY_and; |
4990 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4991 | break; |
463ee0b2 | 4992 | case 5: |
a0d0e21e LW |
4993 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4994 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4995 | break; |
4996 | case 6: | |
a0d0e21e | 4997 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4998 | break; |
4999 | } | |
79072805 LW |
5000 | break; |
5001 | case 'B': | |
5002 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5003 | break; |
79072805 | 5004 | case 'b': |
a0d0e21e LW |
5005 | if (strEQ(d,"bless")) return -KEY_bless; |
5006 | if (strEQ(d,"bind")) return -KEY_bind; | |
5007 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5008 | break; | |
5009 | case 'C': | |
5010 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5011 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5012 | break; |
5013 | case 'c': | |
5014 | switch (len) { | |
5015 | case 3: | |
a0d0e21e LW |
5016 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5017 | if (strEQ(d,"chr")) return -KEY_chr; | |
5018 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5019 | break; |
5020 | case 4: | |
5021 | if (strEQ(d,"chop")) return KEY_chop; | |
5022 | break; | |
5023 | case 5: | |
a0d0e21e LW |
5024 | if (strEQ(d,"close")) return -KEY_close; |
5025 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
5026 | if (strEQ(d,"chomp")) return KEY_chomp; | |
5027 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
5028 | if (strEQ(d,"chown")) return -KEY_chown; | |
5029 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5030 | break; |
5031 | case 6: | |
a0d0e21e LW |
5032 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5033 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5034 | break; |
5035 | case 7: | |
a0d0e21e | 5036 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5037 | break; |
5038 | case 8: | |
a0d0e21e LW |
5039 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5040 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5041 | break; |
5042 | } | |
5043 | break; | |
ed6116ce LW |
5044 | case 'D': |
5045 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5046 | break; | |
79072805 LW |
5047 | case 'd': |
5048 | switch (len) { | |
5049 | case 2: | |
5050 | if (strEQ(d,"do")) return KEY_do; | |
5051 | break; | |
5052 | case 3: | |
a0d0e21e | 5053 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5054 | break; |
5055 | case 4: | |
a0d0e21e | 5056 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5057 | break; |
5058 | case 6: | |
5059 | if (strEQ(d,"delete")) return KEY_delete; | |
5060 | break; | |
5061 | case 7: | |
5062 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5063 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5064 | break; |
5065 | case 8: | |
a0d0e21e | 5066 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5067 | break; |
5068 | } | |
5069 | break; | |
5070 | case 'E': | |
a0d0e21e | 5071 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
5072 | if (strEQ(d,"END")) return KEY_END; |
5073 | break; | |
5074 | case 'e': | |
5075 | switch (len) { | |
5076 | case 2: | |
a0d0e21e | 5077 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5078 | break; |
5079 | case 3: | |
a0d0e21e LW |
5080 | if (strEQ(d,"eof")) return -KEY_eof; |
5081 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5082 | break; |
5083 | case 4: | |
5084 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5085 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5086 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5087 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
5088 | if (strEQ(d,"each")) return KEY_each; |
5089 | break; | |
5090 | case 5: | |
5091 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5092 | break; | |
a0d0e21e LW |
5093 | case 6: |
5094 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5095 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5096 | break; |
79072805 | 5097 | case 8: |
a0d0e21e LW |
5098 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5099 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5100 | break; |
5101 | case 9: | |
a0d0e21e | 5102 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5103 | break; |
5104 | case 10: | |
a0d0e21e LW |
5105 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5106 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5107 | break; |
5108 | case 11: | |
a0d0e21e | 5109 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5110 | break; |
a687059c | 5111 | } |
a687059c | 5112 | break; |
79072805 LW |
5113 | case 'f': |
5114 | switch (len) { | |
5115 | case 3: | |
5116 | if (strEQ(d,"for")) return KEY_for; | |
5117 | break; | |
5118 | case 4: | |
a0d0e21e | 5119 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5120 | break; |
5121 | case 5: | |
a0d0e21e LW |
5122 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5123 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5124 | break; |
5125 | case 6: | |
5126 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5127 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5128 | break; |
5129 | case 7: | |
5130 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5131 | break; | |
5132 | case 8: | |
a0d0e21e | 5133 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5134 | break; |
378cc40b | 5135 | } |
a687059c | 5136 | break; |
79072805 LW |
5137 | case 'G': |
5138 | if (len == 2) { | |
a0d0e21e LW |
5139 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5140 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5141 | } |
a687059c | 5142 | break; |
79072805 | 5143 | case 'g': |
a687059c LW |
5144 | if (strnEQ(d,"get",3)) { |
5145 | d += 3; | |
5146 | if (*d == 'p') { | |
79072805 LW |
5147 | switch (len) { |
5148 | case 7: | |
a0d0e21e LW |
5149 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5150 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5151 | break; |
5152 | case 8: | |
a0d0e21e LW |
5153 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5154 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5155 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5156 | break; |
5157 | case 11: | |
a0d0e21e LW |
5158 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5159 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5160 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5161 | break; |
5162 | case 14: | |
a0d0e21e | 5163 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5164 | break; |
5165 | case 16: | |
a0d0e21e | 5166 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5167 | break; |
5168 | } | |
a687059c LW |
5169 | } |
5170 | else if (*d == 'h') { | |
a0d0e21e LW |
5171 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5172 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5173 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5174 | } |
5175 | else if (*d == 'n') { | |
a0d0e21e LW |
5176 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5177 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5178 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5179 | } |
5180 | else if (*d == 's') { | |
a0d0e21e LW |
5181 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5182 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5183 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5184 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5185 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5186 | } |
5187 | else if (*d == 'g') { | |
a0d0e21e LW |
5188 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5189 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5190 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5191 | } |
5192 | else if (*d == 'l') { | |
a0d0e21e | 5193 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5194 | } |
a0d0e21e | 5195 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5196 | break; |
a687059c | 5197 | } |
79072805 LW |
5198 | switch (len) { |
5199 | case 2: | |
a0d0e21e LW |
5200 | if (strEQ(d,"gt")) return -KEY_gt; |
5201 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5202 | break; |
5203 | case 4: | |
5204 | if (strEQ(d,"grep")) return KEY_grep; | |
5205 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5206 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5207 | break; |
5208 | case 6: | |
a0d0e21e | 5209 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5210 | break; |
378cc40b | 5211 | } |
a687059c | 5212 | break; |
79072805 | 5213 | case 'h': |
a0d0e21e | 5214 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5215 | break; |
7d07dbc2 MB |
5216 | case 'I': |
5217 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5218 | break; | |
79072805 LW |
5219 | case 'i': |
5220 | switch (len) { | |
5221 | case 2: | |
5222 | if (strEQ(d,"if")) return KEY_if; | |
5223 | break; | |
5224 | case 3: | |
a0d0e21e | 5225 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5226 | break; |
5227 | case 5: | |
a0d0e21e LW |
5228 | if (strEQ(d,"index")) return -KEY_index; |
5229 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5230 | break; |
5231 | } | |
a687059c | 5232 | break; |
79072805 | 5233 | case 'j': |
a0d0e21e | 5234 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5235 | break; |
79072805 LW |
5236 | case 'k': |
5237 | if (len == 4) { | |
5238 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5239 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5240 | } |
79072805 LW |
5241 | break; |
5242 | case 'L': | |
5243 | if (len == 2) { | |
a0d0e21e LW |
5244 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5245 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5246 | } |
79072805 LW |
5247 | break; |
5248 | case 'l': | |
5249 | switch (len) { | |
5250 | case 2: | |
a0d0e21e LW |
5251 | if (strEQ(d,"lt")) return -KEY_lt; |
5252 | if (strEQ(d,"le")) return -KEY_le; | |
5253 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5254 | break; |
5255 | case 3: | |
a0d0e21e | 5256 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5257 | break; |
5258 | case 4: | |
5259 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5260 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5261 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5262 | break; |
79072805 LW |
5263 | case 5: |
5264 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5265 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5266 | break; |
5267 | case 6: | |
a0d0e21e LW |
5268 | if (strEQ(d,"length")) return -KEY_length; |
5269 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5270 | break; |
5271 | case 7: | |
a0d0e21e | 5272 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5273 | break; |
5274 | case 9: | |
a0d0e21e | 5275 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5276 | break; |
5277 | } | |
a687059c | 5278 | break; |
79072805 LW |
5279 | case 'm': |
5280 | switch (len) { | |
5281 | case 1: return KEY_m; | |
93a17b20 LW |
5282 | case 2: |
5283 | if (strEQ(d,"my")) return KEY_my; | |
5284 | break; | |
a0d0e21e LW |
5285 | case 3: |
5286 | if (strEQ(d,"map")) return KEY_map; | |
5287 | break; | |
79072805 | 5288 | case 5: |
a0d0e21e | 5289 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5290 | break; |
5291 | case 6: | |
a0d0e21e LW |
5292 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5293 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5294 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5295 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5296 | break; |
5297 | } | |
a687059c | 5298 | break; |
79072805 | 5299 | case 'N': |
a0d0e21e | 5300 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5301 | break; |
79072805 LW |
5302 | case 'n': |
5303 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5304 | if (strEQ(d,"ne")) return -KEY_ne; |
5305 | if (strEQ(d,"not")) return -KEY_not; | |
5306 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5307 | break; |
79072805 LW |
5308 | case 'o': |
5309 | switch (len) { | |
463ee0b2 | 5310 | case 2: |
a0d0e21e | 5311 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5312 | break; |
79072805 | 5313 | case 3: |
a0d0e21e LW |
5314 | if (strEQ(d,"ord")) return -KEY_ord; |
5315 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5316 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5317 | break; |
5318 | case 4: | |
a0d0e21e | 5319 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5320 | break; |
5321 | case 7: | |
a0d0e21e | 5322 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5323 | break; |
fe14fcc3 | 5324 | } |
a687059c | 5325 | break; |
79072805 LW |
5326 | case 'p': |
5327 | switch (len) { | |
5328 | case 3: | |
5329 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5330 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5331 | break; |
5332 | case 4: | |
5333 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5334 | if (strEQ(d,"pack")) return -KEY_pack; |
5335 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5336 | break; |
5337 | case 5: | |
5338 | if (strEQ(d,"print")) return KEY_print; | |
5339 | break; | |
5340 | case 6: | |
5341 | if (strEQ(d,"printf")) return KEY_printf; | |
5342 | break; | |
5343 | case 7: | |
5344 | if (strEQ(d,"package")) return KEY_package; | |
5345 | break; | |
c07a80fd | 5346 | case 9: |
5347 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5348 | } |
79072805 LW |
5349 | break; |
5350 | case 'q': | |
5351 | if (len <= 2) { | |
5352 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5353 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5354 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5355 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5356 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5357 | } |
a0d0e21e | 5358 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5359 | break; |
5360 | case 'r': | |
5361 | switch (len) { | |
5362 | case 3: | |
a0d0e21e | 5363 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5364 | break; |
5365 | case 4: | |
a0d0e21e LW |
5366 | if (strEQ(d,"read")) return -KEY_read; |
5367 | if (strEQ(d,"rand")) return -KEY_rand; | |
5368 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5369 | if (strEQ(d,"redo")) return KEY_redo; |
5370 | break; | |
5371 | case 5: | |
a0d0e21e LW |
5372 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5373 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5374 | break; |
5375 | case 6: | |
5376 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5377 | if (strEQ(d,"rename")) return -KEY_rename; |
5378 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5379 | break; |
5380 | case 7: | |
a0d0e21e LW |
5381 | if (strEQ(d,"require")) return -KEY_require; |
5382 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5383 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5384 | break; |
5385 | case 8: | |
a0d0e21e LW |
5386 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5387 | if (strEQ(d,"readline")) return -KEY_readline; | |
5388 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5389 | break; |
5390 | case 9: | |
a0d0e21e | 5391 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5392 | break; |
a687059c | 5393 | } |
79072805 LW |
5394 | break; |
5395 | case 's': | |
a687059c | 5396 | switch (d[1]) { |
79072805 | 5397 | case 0: return KEY_s; |
a687059c | 5398 | case 'c': |
79072805 | 5399 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5400 | break; |
5401 | case 'e': | |
79072805 LW |
5402 | switch (len) { |
5403 | case 4: | |
a0d0e21e LW |
5404 | if (strEQ(d,"seek")) return -KEY_seek; |
5405 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5406 | break; |
5407 | case 5: | |
a0d0e21e | 5408 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5409 | break; |
5410 | case 6: | |
a0d0e21e LW |
5411 | if (strEQ(d,"select")) return -KEY_select; |
5412 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5413 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5414 | break; |
5415 | case 7: | |
a0d0e21e LW |
5416 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5417 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5418 | break; |
5419 | case 8: | |
a0d0e21e LW |
5420 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5421 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5422 | break; |
5423 | case 9: | |
a0d0e21e | 5424 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5425 | break; |
5426 | case 10: | |
a0d0e21e LW |
5427 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5428 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5429 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5430 | break; |
5431 | case 11: | |
a0d0e21e LW |
5432 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5433 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5434 | break; |
5435 | } | |
a687059c LW |
5436 | break; |
5437 | case 'h': | |
79072805 LW |
5438 | switch (len) { |
5439 | case 5: | |
5440 | if (strEQ(d,"shift")) return KEY_shift; | |
5441 | break; | |
5442 | case 6: | |
a0d0e21e LW |
5443 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5444 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5445 | break; |
5446 | case 7: | |
a0d0e21e | 5447 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5448 | break; |
5449 | case 8: | |
a0d0e21e LW |
5450 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5451 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5452 | break; |
5453 | } | |
a687059c LW |
5454 | break; |
5455 | case 'i': | |
a0d0e21e | 5456 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5457 | break; |
5458 | case 'l': | |
a0d0e21e | 5459 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5460 | break; |
5461 | case 'o': | |
79072805 | 5462 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5463 | if (strEQ(d,"socket")) return -KEY_socket; |
5464 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5465 | break; |
5466 | case 'p': | |
79072805 | 5467 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5468 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5469 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5470 | break; |
5471 | case 'q': | |
a0d0e21e | 5472 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5473 | break; |
5474 | case 'r': | |
a0d0e21e | 5475 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5476 | break; |
5477 | case 't': | |
a0d0e21e | 5478 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5479 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5480 | break; |
5481 | case 'u': | |
a0d0e21e | 5482 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5483 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5484 | break; |
5485 | case 'y': | |
79072805 LW |
5486 | switch (len) { |
5487 | case 6: | |
a0d0e21e | 5488 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5489 | break; |
5490 | case 7: | |
a0d0e21e LW |
5491 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5492 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5493 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5494 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5495 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5496 | break; |
5497 | case 8: | |
a0d0e21e | 5498 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5499 | break; |
a687059c | 5500 | } |
a687059c LW |
5501 | break; |
5502 | } | |
5503 | break; | |
79072805 LW |
5504 | case 't': |
5505 | switch (len) { | |
5506 | case 2: | |
5507 | if (strEQ(d,"tr")) return KEY_tr; | |
5508 | break; | |
463ee0b2 LW |
5509 | case 3: |
5510 | if (strEQ(d,"tie")) return KEY_tie; | |
5511 | break; | |
79072805 | 5512 | case 4: |
a0d0e21e | 5513 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5514 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5515 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5516 | break; |
5517 | case 5: | |
a0d0e21e | 5518 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5519 | break; |
5520 | case 7: | |
a0d0e21e | 5521 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5522 | break; |
5523 | case 8: | |
a0d0e21e | 5524 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5525 | break; |
378cc40b | 5526 | } |
a687059c | 5527 | break; |
79072805 LW |
5528 | case 'u': |
5529 | switch (len) { | |
5530 | case 2: | |
a0d0e21e LW |
5531 | if (strEQ(d,"uc")) return -KEY_uc; |
5532 | break; | |
5533 | case 3: | |
5534 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5535 | break; |
5536 | case 5: | |
5537 | if (strEQ(d,"undef")) return KEY_undef; | |
5538 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5539 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5540 | if (strEQ(d,"utime")) return -KEY_utime; |
5541 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5542 | break; |
5543 | case 6: | |
5544 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5545 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5546 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5547 | break; |
5548 | case 7: | |
5549 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5550 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5551 | break; |
a687059c LW |
5552 | } |
5553 | break; | |
79072805 | 5554 | case 'v': |
a0d0e21e LW |
5555 | if (strEQ(d,"values")) return -KEY_values; |
5556 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5557 | break; |
79072805 LW |
5558 | case 'w': |
5559 | switch (len) { | |
5560 | case 4: | |
a0d0e21e LW |
5561 | if (strEQ(d,"warn")) return -KEY_warn; |
5562 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5563 | break; |
5564 | case 5: | |
5565 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5566 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5567 | break; |
5568 | case 7: | |
a0d0e21e | 5569 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5570 | break; |
5571 | case 9: | |
a0d0e21e | 5572 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5573 | break; |
2f3197b3 | 5574 | } |
a687059c | 5575 | break; |
79072805 | 5576 | case 'x': |
a0d0e21e LW |
5577 | if (len == 1) return -KEY_x; |
5578 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5579 | break; |
79072805 LW |
5580 | case 'y': |
5581 | if (len == 1) return KEY_y; | |
5582 | break; | |
5583 | case 'z': | |
a687059c LW |
5584 | break; |
5585 | } | |
79072805 | 5586 | return 0; |
a687059c LW |
5587 | } |
5588 | ||
76e3520e | 5589 | STATIC void |
cea2e8a9 | 5590 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5591 | { |
2f3197b3 LW |
5592 | char *w; |
5593 | ||
d008e5eb GS |
5594 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5595 | dTHR; /* only for ckWARN */ | |
5596 | if (ckWARN(WARN_SYNTAX)) { | |
5597 | int level = 1; | |
5598 | for (w = s+2; *w && level; w++) { | |
5599 | if (*w == '(') | |
5600 | ++level; | |
5601 | else if (*w == ')') | |
5602 | --level; | |
5603 | } | |
5604 | if (*w) | |
5605 | for (; *w && isSPACE(*w); w++) ; | |
5606 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5607 | Perl_warner(aTHX_ WARN_SYNTAX, |
5608 | "%s (...) interpreted as function",name); | |
d008e5eb | 5609 | } |
2f3197b3 | 5610 | } |
3280af22 | 5611 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5612 | s++; |
a687059c LW |
5613 | if (*s == '(') |
5614 | s++; | |
3280af22 | 5615 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5616 | s++; |
7e2040f0 | 5617 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5618 | w = s++; |
7e2040f0 | 5619 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5620 | s++; |
3280af22 | 5621 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5622 | s++; |
e929a76b | 5623 | if (*s == ',') { |
463ee0b2 | 5624 | int kw; |
e929a76b | 5625 | *s = '\0'; |
864dbfa3 | 5626 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5627 | *s = ','; |
463ee0b2 | 5628 | if (kw) |
e929a76b | 5629 | return; |
cea2e8a9 | 5630 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5631 | } |
5632 | } | |
5633 | } | |
5634 | ||
423cee85 JH |
5635 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5636 | Best used as sv=new_constant(..., sv, ...). | |
5637 | If s, pv are NULL, calls subroutine with one argument, | |
5638 | and type is used with error messages only. */ | |
5639 | ||
b3ac6de7 | 5640 | STATIC SV * |
dff6d3cd | 5641 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 5642 | const char *type) |
b3ac6de7 | 5643 | { |
b3ac6de7 | 5644 | dSP; |
3280af22 | 5645 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5646 | SV *res; |
b3ac6de7 IZ |
5647 | SV **cvp; |
5648 | SV *cv, *typesv; | |
dff6d3cd | 5649 | const char *why, *why1, *why2; |
423cee85 JH |
5650 | |
5651 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5652 | SV *msg; | |
5653 | ||
5654 | why = "%^H is not localized"; | |
5655 | report_short: | |
5656 | why1 = why2 = ""; | |
5657 | report: | |
5658 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5659 | (type ? type: "undef"), why1, why2, why); | |
5660 | yyerror(SvPVX(msg)); | |
5661 | SvREFCNT_dec(msg); | |
5662 | return sv; | |
5663 | } | |
b3ac6de7 | 5664 | if (!table) { |
423cee85 JH |
5665 | why = "%^H is not defined"; |
5666 | goto report_short; | |
b3ac6de7 IZ |
5667 | } |
5668 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5669 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5670 | why = "} is not defined"; |
5671 | why1 = "$^H{"; | |
5672 | why2 = key; | |
5673 | goto report; | |
b3ac6de7 IZ |
5674 | } |
5675 | sv_2mortal(sv); /* Parent created it permanently */ | |
5676 | cv = *cvp; | |
423cee85 JH |
5677 | if (!pv && s) |
5678 | pv = sv_2mortal(newSVpvn(s, len)); | |
5679 | if (type && pv) | |
5680 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5681 | else |
423cee85 JH |
5682 | typesv = &PL_sv_undef; |
5683 | ||
e788e7d3 | 5684 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5685 | ENTER ; |
5686 | SAVETMPS; | |
5687 | ||
5688 | PUSHMARK(SP) ; | |
25eaa213 | 5689 | EXTEND(sp, 4); |
423cee85 JH |
5690 | if (pv) |
5691 | PUSHs(pv); | |
b3ac6de7 | 5692 | PUSHs(sv); |
423cee85 JH |
5693 | if (pv) |
5694 | PUSHs(typesv); | |
b3ac6de7 IZ |
5695 | PUSHs(cv); |
5696 | PUTBACK; | |
423cee85 JH |
5697 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5698 | ||
5699 | SPAGAIN ; | |
5700 | ||
5701 | /* Check the eval first */ | |
9b0e499b | 5702 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
5703 | STRLEN n_a; |
5704 | sv_catpv(ERRSV, "Propagated"); | |
5705 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5706 | (void)POPs; |
423cee85 JH |
5707 | res = SvREFCNT_inc(sv); |
5708 | } | |
5709 | else { | |
5710 | res = POPs; | |
e1f15930 | 5711 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5712 | } |
5713 | ||
5714 | PUTBACK ; | |
5715 | FREETMPS ; | |
5716 | LEAVE ; | |
b3ac6de7 | 5717 | POPSTACK; |
423cee85 | 5718 | |
b3ac6de7 | 5719 | if (!SvOK(res)) { |
423cee85 JH |
5720 | why = "}} did not return a defined value"; |
5721 | why1 = "Call to &{$^H{"; | |
5722 | why2 = key; | |
5723 | sv = res; | |
5724 | goto report; | |
9b0e499b | 5725 | } |
423cee85 | 5726 | |
9b0e499b | 5727 | return res; |
b3ac6de7 | 5728 | } |
423cee85 | 5729 | |
76e3520e | 5730 | STATIC char * |
cea2e8a9 | 5731 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5732 | { |
5733 | register char *d = dest; | |
8903cb82 | 5734 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5735 | for (;;) { |
8903cb82 | 5736 | if (d >= e) |
cea2e8a9 | 5737 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5738 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5739 | *d++ = *s++; |
7e2040f0 | 5740 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5741 | *d++ = ':'; |
5742 | *d++ = ':'; | |
5743 | s++; | |
5744 | } | |
c3e0f903 | 5745 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5746 | *d++ = *s++; |
5747 | *d++ = *s++; | |
5748 | } | |
834a4ddd | 5749 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5750 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5751 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5752 | t += UTF8SKIP(t); |
5753 | if (d + (t - s) > e) | |
cea2e8a9 | 5754 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5755 | Copy(s, d, t - s, char); |
5756 | d += t - s; | |
5757 | s = t; | |
5758 | } | |
463ee0b2 LW |
5759 | else { |
5760 | *d = '\0'; | |
5761 | *slp = d - dest; | |
5762 | return s; | |
e929a76b | 5763 | } |
378cc40b LW |
5764 | } |
5765 | } | |
5766 | ||
76e3520e | 5767 | STATIC char * |
cea2e8a9 | 5768 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5769 | { |
5770 | register char *d; | |
8903cb82 | 5771 | register char *e; |
79072805 | 5772 | char *bracket = 0; |
748a9306 | 5773 | char funny = *s++; |
378cc40b | 5774 | |
a0d0e21e LW |
5775 | if (isSPACE(*s)) |
5776 | s = skipspace(s); | |
378cc40b | 5777 | d = dest; |
8903cb82 | 5778 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5779 | if (isDIGIT(*s)) { |
8903cb82 | 5780 | while (isDIGIT(*s)) { |
5781 | if (d >= e) | |
cea2e8a9 | 5782 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5783 | *d++ = *s++; |
8903cb82 | 5784 | } |
378cc40b LW |
5785 | } |
5786 | else { | |
463ee0b2 | 5787 | for (;;) { |
8903cb82 | 5788 | if (d >= e) |
cea2e8a9 | 5789 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5790 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5791 | *d++ = *s++; |
7e2040f0 | 5792 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5793 | *d++ = ':'; |
5794 | *d++ = ':'; | |
5795 | s++; | |
5796 | } | |
a0d0e21e | 5797 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5798 | *d++ = *s++; |
5799 | *d++ = *s++; | |
5800 | } | |
834a4ddd | 5801 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5802 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5803 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5804 | t += UTF8SKIP(t); |
5805 | if (d + (t - s) > e) | |
cea2e8a9 | 5806 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5807 | Copy(s, d, t - s, char); |
5808 | d += t - s; | |
5809 | s = t; | |
5810 | } | |
463ee0b2 LW |
5811 | else |
5812 | break; | |
5813 | } | |
378cc40b LW |
5814 | } |
5815 | *d = '\0'; | |
5816 | d = dest; | |
79072805 | 5817 | if (*d) { |
3280af22 NIS |
5818 | if (PL_lex_state != LEX_NORMAL) |
5819 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5820 | return s; |
378cc40b | 5821 | } |
748a9306 | 5822 | if (*s == '$' && s[1] && |
7e2040f0 | 5823 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5824 | { |
4810e5ec | 5825 | return s; |
5cd24f17 | 5826 | } |
79072805 LW |
5827 | if (*s == '{') { |
5828 | bracket = s; | |
5829 | s++; | |
5830 | } | |
5831 | else if (ck_uni) | |
5832 | check_uni(); | |
93a17b20 | 5833 | if (s < send) |
79072805 LW |
5834 | *d = *s++; |
5835 | d[1] = '\0'; | |
2b92dfce | 5836 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5837 | *d = toCTRL(*s); |
5838 | s++; | |
de3bb511 | 5839 | } |
79072805 | 5840 | if (bracket) { |
748a9306 | 5841 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5842 | while (s < send) { |
5843 | char ch = *s++; | |
5844 | if (ch != ' ' && ch != '\t') { | |
5845 | *d = ch; | |
5846 | break; | |
5847 | } | |
5848 | } | |
748a9306 | 5849 | } |
7e2040f0 | 5850 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 5851 | d++; |
a0ed51b3 LW |
5852 | if (UTF) { |
5853 | e = s; | |
155aba94 | 5854 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 5855 | e += UTF8SKIP(e); |
dfe13c55 | 5856 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5857 | e += UTF8SKIP(e); |
5858 | } | |
5859 | Copy(s, d, e - s, char); | |
5860 | d += e - s; | |
5861 | s = e; | |
5862 | } | |
5863 | else { | |
2b92dfce | 5864 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5865 | *d++ = *s++; |
2b92dfce | 5866 | if (d >= e) |
cea2e8a9 | 5867 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5868 | } |
79072805 | 5869 | *d = '\0'; |
748a9306 | 5870 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5871 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5872 | dTHR; /* only for ckWARN */ |
599cee73 | 5873 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5874 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5875 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5876 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5877 | funny, dest, brack, funny, dest, brack); |
5878 | } | |
79072805 | 5879 | bracket++; |
a0be28da | 5880 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5881 | return s; |
5882 | } | |
2b92dfce GS |
5883 | } |
5884 | /* Handle extended ${^Foo} variables | |
5885 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5886 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5887 | && isALNUM(*s)) | |
5888 | { | |
5889 | d++; | |
5890 | while (isALNUM(*s) && d < e) { | |
5891 | *d++ = *s++; | |
5892 | } | |
5893 | if (d >= e) | |
cea2e8a9 | 5894 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5895 | *d = '\0'; |
79072805 LW |
5896 | } |
5897 | if (*s == '}') { | |
5898 | s++; | |
3280af22 NIS |
5899 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5900 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5901 | if (funny == '#') |
5902 | funny = '@'; | |
d008e5eb GS |
5903 | if (PL_lex_state == LEX_NORMAL) { |
5904 | dTHR; /* only for ckWARN */ | |
5905 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5906 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5907 | { |
cea2e8a9 | 5908 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5909 | "Ambiguous use of %c{%s} resolved to %c%s", |
5910 | funny, dest, funny, dest); | |
5911 | } | |
5912 | } | |
79072805 LW |
5913 | } |
5914 | else { | |
5915 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5916 | *dest = '\0'; |
79072805 LW |
5917 | } |
5918 | } | |
3280af22 NIS |
5919 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5920 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5921 | return s; |
5922 | } | |
5923 | ||
cea2e8a9 GS |
5924 | void |
5925 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5926 | { |
bbce6d69 | 5927 | if (ch == 'i') |
a0d0e21e | 5928 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5929 | else if (ch == 'g') |
5930 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5931 | else if (ch == 'c') |
5932 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5933 | else if (ch == 'o') |
5934 | *pmfl |= PMf_KEEP; | |
5935 | else if (ch == 'm') | |
5936 | *pmfl |= PMf_MULTILINE; | |
5937 | else if (ch == 's') | |
5938 | *pmfl |= PMf_SINGLELINE; | |
5939 | else if (ch == 'x') | |
5940 | *pmfl |= PMf_EXTENDED; | |
5941 | } | |
378cc40b | 5942 | |
76e3520e | 5943 | STATIC char * |
cea2e8a9 | 5944 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5945 | { |
79072805 LW |
5946 | PMOP *pm; |
5947 | char *s; | |
378cc40b | 5948 | |
09bef843 | 5949 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5950 | if (!s) { |
3280af22 NIS |
5951 | if (PL_lex_stuff) |
5952 | SvREFCNT_dec(PL_lex_stuff); | |
5953 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5954 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5955 | } |
bbce6d69 | 5956 | |
8782bef2 | 5957 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5958 | if (PL_multi_open == '?') |
79072805 | 5959 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5960 | if(type == OP_QR) { |
5961 | while (*s && strchr("iomsx", *s)) | |
5962 | pmflag(&pm->op_pmflags,*s++); | |
5963 | } | |
5964 | else { | |
5965 | while (*s && strchr("iogcmsx", *s)) | |
5966 | pmflag(&pm->op_pmflags,*s++); | |
5967 | } | |
4633a7c4 | 5968 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5969 | |
3280af22 | 5970 | PL_lex_op = (OP*)pm; |
79072805 | 5971 | yylval.ival = OP_MATCH; |
378cc40b LW |
5972 | return s; |
5973 | } | |
5974 | ||
76e3520e | 5975 | STATIC char * |
cea2e8a9 | 5976 | S_scan_subst(pTHX_ char *start) |
79072805 | 5977 | { |
a0d0e21e | 5978 | register char *s; |
79072805 | 5979 | register PMOP *pm; |
4fdae800 | 5980 | I32 first_start; |
79072805 LW |
5981 | I32 es = 0; |
5982 | ||
79072805 LW |
5983 | yylval.ival = OP_NULL; |
5984 | ||
09bef843 | 5985 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5986 | |
5987 | if (!s) { | |
3280af22 NIS |
5988 | if (PL_lex_stuff) |
5989 | SvREFCNT_dec(PL_lex_stuff); | |
5990 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5991 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5992 | } |
79072805 | 5993 | |
3280af22 | 5994 | if (s[-1] == PL_multi_open) |
79072805 LW |
5995 | s--; |
5996 | ||
3280af22 | 5997 | first_start = PL_multi_start; |
09bef843 | 5998 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5999 | if (!s) { |
3280af22 NIS |
6000 | if (PL_lex_stuff) |
6001 | SvREFCNT_dec(PL_lex_stuff); | |
6002 | PL_lex_stuff = Nullsv; | |
6003 | if (PL_lex_repl) | |
6004 | SvREFCNT_dec(PL_lex_repl); | |
6005 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6006 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6007 | } |
3280af22 | 6008 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6009 | |
79072805 | 6010 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6011 | while (*s) { |
a687059c LW |
6012 | if (*s == 'e') { |
6013 | s++; | |
2f3197b3 | 6014 | es++; |
a687059c | 6015 | } |
b3eb6a9b | 6016 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6017 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6018 | else |
6019 | break; | |
378cc40b | 6020 | } |
79072805 LW |
6021 | |
6022 | if (es) { | |
6023 | SV *repl; | |
0244c3a4 GS |
6024 | PL_sublex_info.super_bufptr = s; |
6025 | PL_sublex_info.super_bufend = PL_bufend; | |
6026 | PL_multi_end = 0; | |
79072805 | 6027 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6028 | repl = newSVpvn("",0); |
463ee0b2 | 6029 | while (es-- > 0) |
a0d0e21e | 6030 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6031 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6032 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6033 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6034 | SvEVALED_on(repl); |
3280af22 NIS |
6035 | SvREFCNT_dec(PL_lex_repl); |
6036 | PL_lex_repl = repl; | |
378cc40b | 6037 | } |
79072805 | 6038 | |
4633a7c4 | 6039 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6040 | PL_lex_op = (OP*)pm; |
79072805 | 6041 | yylval.ival = OP_SUBST; |
378cc40b LW |
6042 | return s; |
6043 | } | |
6044 | ||
76e3520e | 6045 | STATIC char * |
cea2e8a9 | 6046 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6047 | { |
a0d0e21e | 6048 | register char* s; |
11343788 | 6049 | OP *o; |
79072805 LW |
6050 | short *tbl; |
6051 | I32 squash; | |
a0ed51b3 | 6052 | I32 del; |
79072805 | 6053 | I32 complement; |
a0ed51b3 LW |
6054 | I32 utf8; |
6055 | I32 count = 0; | |
79072805 LW |
6056 | |
6057 | yylval.ival = OP_NULL; | |
6058 | ||
09bef843 | 6059 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6060 | if (!s) { |
3280af22 NIS |
6061 | if (PL_lex_stuff) |
6062 | SvREFCNT_dec(PL_lex_stuff); | |
6063 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6064 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 6065 | } |
3280af22 | 6066 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6067 | s--; |
6068 | ||
09bef843 | 6069 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6070 | if (!s) { |
3280af22 NIS |
6071 | if (PL_lex_stuff) |
6072 | SvREFCNT_dec(PL_lex_stuff); | |
6073 | PL_lex_stuff = Nullsv; | |
6074 | if (PL_lex_repl) | |
6075 | SvREFCNT_dec(PL_lex_repl); | |
6076 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6077 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6078 | } |
79072805 | 6079 | |
a0ed51b3 LW |
6080 | if (UTF) { |
6081 | o = newSVOP(OP_TRANS, 0, 0); | |
6082 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
6083 | } | |
6084 | else { | |
6085 | New(803,tbl,256,short); | |
6086 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
6087 | utf8 = 0; | |
6088 | } | |
2f3197b3 | 6089 | |
a0ed51b3 LW |
6090 | complement = del = squash = 0; |
6091 | while (strchr("cdsCU", *s)) { | |
395c3793 | 6092 | if (*s == 'c') |
79072805 | 6093 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6094 | else if (*s == 'd') |
a0ed51b3 LW |
6095 | del = OPpTRANS_DELETE; |
6096 | else if (*s == 's') | |
79072805 | 6097 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
6098 | else { |
6099 | switch (count++) { | |
6100 | case 0: | |
6101 | if (*s == 'C') | |
6102 | utf8 &= ~OPpTRANS_FROM_UTF; | |
6103 | else | |
6104 | utf8 |= OPpTRANS_FROM_UTF; | |
6105 | break; | |
6106 | case 1: | |
6107 | if (*s == 'C') | |
6108 | utf8 &= ~OPpTRANS_TO_UTF; | |
6109 | else | |
6110 | utf8 |= OPpTRANS_TO_UTF; | |
6111 | break; | |
6112 | default: | |
cea2e8a9 | 6113 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6114 | } |
6115 | } | |
395c3793 LW |
6116 | s++; |
6117 | } | |
a0ed51b3 | 6118 | o->op_private = del|squash|complement|utf8; |
79072805 | 6119 | |
3280af22 | 6120 | PL_lex_op = o; |
79072805 LW |
6121 | yylval.ival = OP_TRANS; |
6122 | return s; | |
6123 | } | |
6124 | ||
76e3520e | 6125 | STATIC char * |
cea2e8a9 | 6126 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6127 | { |
11343788 | 6128 | dTHR; |
79072805 LW |
6129 | SV *herewas; |
6130 | I32 op_type = OP_SCALAR; | |
6131 | I32 len; | |
6132 | SV *tmpstr; | |
6133 | char term; | |
6134 | register char *d; | |
fc36a67e | 6135 | register char *e; |
4633a7c4 | 6136 | char *peek; |
3280af22 | 6137 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6138 | |
6139 | s += 2; | |
3280af22 NIS |
6140 | d = PL_tokenbuf; |
6141 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6142 | if (!outer) |
79072805 | 6143 | *d++ = '\n'; |
4633a7c4 LW |
6144 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
6145 | if (*peek && strchr("`'\"",*peek)) { | |
6146 | s = peek; | |
79072805 | 6147 | term = *s++; |
3280af22 | 6148 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6149 | d += len; |
3280af22 | 6150 | if (s < PL_bufend) |
79072805 | 6151 | s++; |
79072805 LW |
6152 | } |
6153 | else { | |
6154 | if (*s == '\\') | |
6155 | s++, term = '\''; | |
6156 | else | |
6157 | term = '"'; | |
7e2040f0 | 6158 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6159 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6160 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6161 | if (d < e) |
6162 | *d++ = *s; | |
6163 | } | |
6164 | } | |
3280af22 | 6165 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6166 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6167 | *d++ = '\n'; |
6168 | *d = '\0'; | |
3280af22 | 6169 | len = d - PL_tokenbuf; |
6a27c188 | 6170 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6171 | d = strchr(s, '\r'); |
6172 | if (d) { | |
6173 | char *olds = s; | |
6174 | s = d; | |
3280af22 | 6175 | while (s < PL_bufend) { |
f63a84b2 LW |
6176 | if (*s == '\r') { |
6177 | *d++ = '\n'; | |
6178 | if (*++s == '\n') | |
6179 | s++; | |
6180 | } | |
6181 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6182 | *d++ = *s++; | |
6183 | s++; | |
6184 | } | |
6185 | else | |
6186 | *d++ = *s++; | |
6187 | } | |
6188 | *d = '\0'; | |
3280af22 NIS |
6189 | PL_bufend = d; |
6190 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6191 | s = olds; |
6192 | } | |
6193 | #endif | |
79072805 | 6194 | d = "\n"; |
3280af22 | 6195 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6196 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6197 | else |
79cb57f6 | 6198 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6199 | s += SvCUR(herewas); |
748a9306 | 6200 | |
8d6dde3e | 6201 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6202 | sv_upgrade(tmpstr, SVt_PVIV); |
6203 | if (term == '\'') { | |
79072805 | 6204 | op_type = OP_CONST; |
748a9306 LW |
6205 | SvIVX(tmpstr) = -1; |
6206 | } | |
6207 | else if (term == '`') { | |
79072805 | 6208 | op_type = OP_BACKTICK; |
748a9306 LW |
6209 | SvIVX(tmpstr) = '\\'; |
6210 | } | |
79072805 LW |
6211 | |
6212 | CLINE; | |
57843af0 | 6213 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6214 | PL_multi_open = PL_multi_close = '<'; |
6215 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6216 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6217 | char *bufptr = PL_sublex_info.super_bufptr; | |
6218 | char *bufend = PL_sublex_info.super_bufend; | |
6219 | char *olds = s - SvCUR(herewas); | |
6220 | s = strchr(bufptr, '\n'); | |
6221 | if (!s) | |
6222 | s = bufend; | |
6223 | d = s; | |
6224 | while (s < bufend && | |
6225 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6226 | if (*s++ == '\n') | |
57843af0 | 6227 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6228 | } |
6229 | if (s >= bufend) { | |
57843af0 | 6230 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6231 | missingterm(PL_tokenbuf); |
6232 | } | |
6233 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6234 | sv_setpvn(tmpstr,d+1,s-d); | |
6235 | s += len - 1; | |
6236 | sv_catpvn(herewas,s,bufend-s); | |
6237 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6238 | ||
6239 | s = olds; | |
6240 | goto retval; | |
6241 | } | |
6242 | else if (!outer) { | |
79072805 | 6243 | d = s; |
3280af22 NIS |
6244 | while (s < PL_bufend && |
6245 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6246 | if (*s++ == '\n') |
57843af0 | 6247 | CopLINE_inc(PL_curcop); |
79072805 | 6248 | } |
3280af22 | 6249 | if (s >= PL_bufend) { |
57843af0 | 6250 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6251 | missingterm(PL_tokenbuf); |
79072805 LW |
6252 | } |
6253 | sv_setpvn(tmpstr,d+1,s-d); | |
6254 | s += len - 1; | |
57843af0 | 6255 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6256 | |
3280af22 NIS |
6257 | sv_catpvn(herewas,s,PL_bufend-s); |
6258 | sv_setsv(PL_linestr,herewas); | |
6259 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6260 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6261 | } |
6262 | else | |
6263 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6264 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6265 | if (!outer || |
3280af22 | 6266 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6267 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6268 | missingterm(PL_tokenbuf); |
79072805 | 6269 | } |
57843af0 | 6270 | CopLINE_inc(PL_curcop); |
3280af22 | 6271 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6272 | #ifndef PERL_STRICT_CR |
3280af22 | 6273 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6274 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6275 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6276 | { |
3280af22 NIS |
6277 | PL_bufend[-2] = '\n'; |
6278 | PL_bufend--; | |
6279 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6280 | } |
3280af22 NIS |
6281 | else if (PL_bufend[-1] == '\r') |
6282 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6283 | } |
3280af22 NIS |
6284 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6285 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6286 | #endif |
3280af22 | 6287 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6288 | SV *sv = NEWSV(88,0); |
6289 | ||
93a17b20 | 6290 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6291 | sv_setsv(sv,PL_linestr); |
57843af0 | 6292 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6293 | } |
3280af22 NIS |
6294 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6295 | s = PL_bufend - 1; | |
79072805 | 6296 | *s = ' '; |
3280af22 NIS |
6297 | sv_catsv(PL_linestr,herewas); |
6298 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6299 | } |
6300 | else { | |
3280af22 NIS |
6301 | s = PL_bufend; |
6302 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6303 | } |
6304 | } | |
79072805 | 6305 | s++; |
0244c3a4 | 6306 | retval: |
57843af0 | 6307 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6308 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6309 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6310 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6311 | } |
8990e307 | 6312 | SvREFCNT_dec(herewas); |
3280af22 | 6313 | PL_lex_stuff = tmpstr; |
79072805 LW |
6314 | yylval.ival = op_type; |
6315 | return s; | |
6316 | } | |
6317 | ||
02aa26ce NT |
6318 | /* scan_inputsymbol |
6319 | takes: current position in input buffer | |
6320 | returns: new position in input buffer | |
6321 | side-effects: yylval and lex_op are set. | |
6322 | ||
6323 | This code handles: | |
6324 | ||
6325 | <> read from ARGV | |
6326 | <FH> read from filehandle | |
6327 | <pkg::FH> read from package qualified filehandle | |
6328 | <pkg'FH> read from package qualified filehandle | |
6329 | <$fh> read from filehandle in $fh | |
6330 | <*.h> filename glob | |
6331 | ||
6332 | */ | |
6333 | ||
76e3520e | 6334 | STATIC char * |
cea2e8a9 | 6335 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6336 | { |
02aa26ce | 6337 | register char *s = start; /* current position in buffer */ |
79072805 | 6338 | register char *d; |
fc36a67e | 6339 | register char *e; |
1b420867 | 6340 | char *end; |
79072805 LW |
6341 | I32 len; |
6342 | ||
3280af22 NIS |
6343 | d = PL_tokenbuf; /* start of temp holding space */ |
6344 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6345 | end = strchr(s, '\n'); |
6346 | if (!end) | |
6347 | end = PL_bufend; | |
6348 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6349 | |
6350 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6351 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6352 | */ |
6353 | ||
3280af22 | 6354 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6355 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6356 | if (s >= end) |
cea2e8a9 | 6357 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6358 | |
fc36a67e | 6359 | s++; |
02aa26ce NT |
6360 | |
6361 | /* check for <$fh> | |
6362 | Remember, only scalar variables are interpreted as filehandles by | |
6363 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6364 | treated as a glob() call. | |
6365 | This code makes use of the fact that except for the $ at the front, | |
6366 | a scalar variable and a filehandle look the same. | |
6367 | */ | |
4633a7c4 | 6368 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6369 | |
6370 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6371 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6372 | d++; |
02aa26ce NT |
6373 | |
6374 | /* If we've tried to read what we allow filehandles to look like, and | |
6375 | there's still text left, then it must be a glob() and not a getline. | |
6376 | Use scan_str to pull out the stuff between the <> and treat it | |
6377 | as nothing more than a string. | |
6378 | */ | |
6379 | ||
3280af22 | 6380 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6381 | yylval.ival = OP_GLOB; |
6382 | set_csh(); | |
09bef843 | 6383 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6384 | if (!s) |
cea2e8a9 | 6385 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6386 | return s; |
6387 | } | |
395c3793 | 6388 | else { |
02aa26ce | 6389 | /* we're in a filehandle read situation */ |
3280af22 | 6390 | d = PL_tokenbuf; |
02aa26ce NT |
6391 | |
6392 | /* turn <> into <ARGV> */ | |
79072805 LW |
6393 | if (!len) |
6394 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6395 | |
6396 | /* if <$fh>, create the ops to turn the variable into a | |
6397 | filehandle | |
6398 | */ | |
79072805 | 6399 | if (*d == '$') { |
a0d0e21e | 6400 | I32 tmp; |
02aa26ce NT |
6401 | |
6402 | /* try to find it in the pad for this block, otherwise find | |
6403 | add symbol table ops | |
6404 | */ | |
11343788 MB |
6405 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6406 | OP *o = newOP(OP_PADSV, 0); | |
6407 | o->op_targ = tmp; | |
f5284f61 | 6408 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6409 | } |
6410 | else { | |
6411 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6412 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6413 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6414 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6415 | } |
f5284f61 IZ |
6416 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6417 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6418 | yylval.ival = OP_NULL; |
6419 | } | |
02aa26ce NT |
6420 | |
6421 | /* If it's none of the above, it must be a literal filehandle | |
6422 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6423 | else { |
85e6fe83 | 6424 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6425 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6426 | yylval.ival = OP_NULL; |
6427 | } | |
6428 | } | |
02aa26ce | 6429 | |
79072805 LW |
6430 | return s; |
6431 | } | |
6432 | ||
02aa26ce NT |
6433 | |
6434 | /* scan_str | |
6435 | takes: start position in buffer | |
09bef843 SB |
6436 | keep_quoted preserve \ on the embedded delimiter(s) |
6437 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6438 | returns: position to continue reading from buffer |
6439 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6440 | updates the read buffer. | |
6441 | ||
6442 | This subroutine pulls a string out of the input. It is called for: | |
6443 | q single quotes q(literal text) | |
6444 | ' single quotes 'literal text' | |
6445 | qq double quotes qq(interpolate $here please) | |
6446 | " double quotes "interpolate $here please" | |
6447 | qx backticks qx(/bin/ls -l) | |
6448 | ` backticks `/bin/ls -l` | |
6449 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6450 | m// regexp match m/this/ | |
6451 | s/// regexp substitute s/this/that/ | |
6452 | tr/// string transliterate tr/this/that/ | |
6453 | y/// string transliterate y/this/that/ | |
6454 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6455 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6456 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6457 | ||
6458 | In most of these cases (all but <>, patterns and transliterate) | |
6459 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6460 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6461 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6462 | calls scan_str(). | |
6463 | ||
6464 | It skips whitespace before the string starts, and treats the first | |
6465 | character as the delimiter. If the delimiter is one of ([{< then | |
6466 | the corresponding "close" character )]}> is used as the closing | |
6467 | delimiter. It allows quoting of delimiters, and if the string has | |
6468 | balanced delimiters ([{<>}]) it allows nesting. | |
6469 | ||
6470 | The lexer always reads these strings into lex_stuff, except in the | |
6471 | case of the operators which take *two* arguments (s/// and tr///) | |
6472 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6473 | arg to s or tr) and if so puts the string into lex_repl. | |
6474 | ||
6475 | */ | |
6476 | ||
76e3520e | 6477 | STATIC char * |
09bef843 | 6478 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6479 | { |
11343788 | 6480 | dTHR; |
02aa26ce NT |
6481 | SV *sv; /* scalar value: string */ |
6482 | char *tmps; /* temp string, used for delimiter matching */ | |
6483 | register char *s = start; /* current position in the buffer */ | |
6484 | register char term; /* terminating character */ | |
6485 | register char *to; /* current position in the sv's data */ | |
6486 | I32 brackets = 1; /* bracket nesting level */ | |
b1c7b182 | 6487 | bool has_utf = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6488 | |
6489 | /* skip space before the delimiter */ | |
fb73857a | 6490 | if (isSPACE(*s)) |
6491 | s = skipspace(s); | |
02aa26ce NT |
6492 | |
6493 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6494 | CLINE; |
02aa26ce NT |
6495 | |
6496 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6497 | term = *s; |
b1c7b182 GS |
6498 | if ((term & 0x80) && UTF) |
6499 | has_utf = TRUE; | |
6500 | ||
02aa26ce | 6501 | /* mark where we are */ |
57843af0 | 6502 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6503 | PL_multi_open = term; |
02aa26ce NT |
6504 | |
6505 | /* find corresponding closing delimiter */ | |
93a17b20 | 6506 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6507 | term = tmps[5]; |
3280af22 | 6508 | PL_multi_close = term; |
79072805 | 6509 | |
02aa26ce | 6510 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6511 | assuming. 79 is the SV's initial length. What a random number. */ |
6512 | sv = NEWSV(87,79); | |
ed6116ce LW |
6513 | sv_upgrade(sv, SVt_PVIV); |
6514 | SvIVX(sv) = term; | |
a0d0e21e | 6515 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6516 | |
6517 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6518 | if (keep_delims) |
6519 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6520 | s++; |
6521 | for (;;) { | |
02aa26ce | 6522 | /* extend sv if need be */ |
3280af22 | 6523 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6524 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6525 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6526 | |
02aa26ce | 6527 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6528 | if (PL_multi_open == PL_multi_close) { |
6529 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6530 | /* embedded newlines increment the current line number */ |
3280af22 | 6531 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6532 | CopLINE_inc(PL_curcop); |
02aa26ce | 6533 | /* handle quoted delimiters */ |
3280af22 | 6534 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6535 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6536 | s++; |
02aa26ce | 6537 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6538 | else |
6539 | *to++ = *s++; | |
6540 | } | |
02aa26ce NT |
6541 | /* terminate when run out of buffer (the for() condition), or |
6542 | have found the terminator */ | |
93a17b20 LW |
6543 | else if (*s == term) |
6544 | break; | |
b1c7b182 GS |
6545 | else if (!has_utf && (*s & 0x80) && UTF) |
6546 | has_utf = TRUE; | |
93a17b20 LW |
6547 | *to = *s; |
6548 | } | |
6549 | } | |
02aa26ce NT |
6550 | |
6551 | /* if the terminator isn't the same as the start character (e.g., | |
6552 | matched brackets), we have to allow more in the quoting, and | |
6553 | be prepared for nested brackets. | |
6554 | */ | |
93a17b20 | 6555 | else { |
02aa26ce | 6556 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6557 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6558 | /* embedded newlines increment the line count */ |
3280af22 | 6559 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6560 | CopLINE_inc(PL_curcop); |
02aa26ce | 6561 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6562 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6563 | if (!keep_quoted && |
6564 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6565 | s++; |
6566 | else | |
6567 | *to++ = *s++; | |
6568 | } | |
02aa26ce | 6569 | /* allow nested opens and closes */ |
3280af22 | 6570 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6571 | break; |
3280af22 | 6572 | else if (*s == PL_multi_open) |
93a17b20 | 6573 | brackets++; |
b1c7b182 GS |
6574 | else if (!has_utf && (*s & 0x80) && UTF) |
6575 | has_utf = TRUE; | |
93a17b20 LW |
6576 | *to = *s; |
6577 | } | |
6578 | } | |
02aa26ce | 6579 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6580 | *to = '\0'; |
463ee0b2 | 6581 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6582 | |
02aa26ce NT |
6583 | /* |
6584 | * this next chunk reads more into the buffer if we're not done yet | |
6585 | */ | |
6586 | ||
b1c7b182 GS |
6587 | if (s < PL_bufend) |
6588 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6589 | |
6a27c188 | 6590 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6591 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6592 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6593 | (to[-2] == '\n' && to[-1] == '\r')) | |
6594 | { | |
f63a84b2 LW |
6595 | to[-2] = '\n'; |
6596 | to--; | |
6597 | SvCUR_set(sv, to - SvPVX(sv)); | |
6598 | } | |
6599 | else if (to[-1] == '\r') | |
6600 | to[-1] = '\n'; | |
6601 | } | |
6602 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6603 | to[-1] = '\n'; | |
6604 | #endif | |
6605 | ||
02aa26ce NT |
6606 | /* if we're out of file, or a read fails, bail and reset the current |
6607 | line marker so we can report where the unterminated string began | |
6608 | */ | |
3280af22 NIS |
6609 | if (!PL_rsfp || |
6610 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6611 | sv_free(sv); |
57843af0 | 6612 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6613 | return Nullch; |
6614 | } | |
02aa26ce | 6615 | /* we read a line, so increment our line counter */ |
57843af0 | 6616 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6617 | |
02aa26ce | 6618 | /* update debugger info */ |
3280af22 | 6619 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6620 | SV *sv = NEWSV(88,0); |
6621 | ||
93a17b20 | 6622 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6623 | sv_setsv(sv,PL_linestr); |
57843af0 | 6624 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6625 | } |
a0ed51b3 | 6626 | |
3280af22 NIS |
6627 | /* having changed the buffer, we must update PL_bufend */ |
6628 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6629 | } |
02aa26ce NT |
6630 | |
6631 | /* at this point, we have successfully read the delimited string */ | |
6632 | ||
09bef843 SB |
6633 | if (keep_delims) |
6634 | sv_catpvn(sv, s, 1); | |
b1c7b182 GS |
6635 | if (has_utf) |
6636 | SvUTF8_on(sv); | |
57843af0 | 6637 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6638 | s++; |
02aa26ce NT |
6639 | |
6640 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6641 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6642 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6643 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6644 | } |
02aa26ce NT |
6645 | |
6646 | /* decide whether this is the first or second quoted string we've read | |
6647 | for this op | |
6648 | */ | |
6649 | ||
3280af22 NIS |
6650 | if (PL_lex_stuff) |
6651 | PL_lex_repl = sv; | |
79072805 | 6652 | else |
3280af22 | 6653 | PL_lex_stuff = sv; |
378cc40b LW |
6654 | return s; |
6655 | } | |
6656 | ||
02aa26ce NT |
6657 | /* |
6658 | scan_num | |
6659 | takes: pointer to position in buffer | |
6660 | returns: pointer to new position in buffer | |
6661 | side-effects: builds ops for the constant in yylval.op | |
6662 | ||
6663 | Read a number in any of the formats that Perl accepts: | |
6664 | ||
4f19785b | 6665 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6666 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6667 | ||
6668 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6669 | underbars before a decimal point must be at three digit intervals. | |
6670 | ||
3280af22 | 6671 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6672 | thing it reads. |
6673 | ||
6674 | If it reads a number without a decimal point or an exponent, it will | |
6675 | try converting the number to an integer and see if it can do so | |
6676 | without loss of precision. | |
6677 | */ | |
6678 | ||
378cc40b | 6679 | char * |
864dbfa3 | 6680 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6681 | { |
02aa26ce NT |
6682 | register char *s = start; /* current position in buffer */ |
6683 | register char *d; /* destination in temp buffer */ | |
6684 | register char *e; /* end of temp buffer */ | |
65202027 | 6685 | NV value; /* number read, as a double */ |
a7cb1f99 | 6686 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6687 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6688 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6689 | static char number_too_long[] = "Number too long"; |
378cc40b | 6690 | |
02aa26ce NT |
6691 | /* We use the first character to decide what type of number this is */ |
6692 | ||
378cc40b | 6693 | switch (*s) { |
79072805 | 6694 | default: |
cea2e8a9 | 6695 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6696 | |
6697 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6698 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6699 | case '0': |
6700 | { | |
02aa26ce NT |
6701 | /* variables: |
6702 | u holds the "number so far" | |
4f19785b WSI |
6703 | shift the power of 2 of the base |
6704 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6705 | overflowed was the number more than we can hold? |
6706 | ||
6707 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6708 | we in octal/hex/binary?" indicator to disallow hex characters |
6709 | when in octal mode. | |
02aa26ce | 6710 | */ |
f248d071 | 6711 | dTHR; |
9e24b6e2 JH |
6712 | NV n = 0.0; |
6713 | UV u = 0; | |
79072805 | 6714 | I32 shift; |
9e24b6e2 JH |
6715 | bool overflowed = FALSE; |
6716 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6717 | static char* bases[5] = { "", "binary", "", "octal", | |
6718 | "hexadecimal" }; | |
6719 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6720 | "Hexadecimal" }; | |
6721 | static char *maxima[5] = { "", | |
6722 | "0b11111111111111111111111111111111", | |
6723 | "", | |
893fe2c2 | 6724 | "037777777777", |
9e24b6e2 JH |
6725 | "0xffffffff" }; |
6726 | char *base, *Base, *max; | |
378cc40b | 6727 | |
02aa26ce | 6728 | /* check for hex */ |
378cc40b LW |
6729 | if (s[1] == 'x') { |
6730 | shift = 4; | |
6731 | s += 2; | |
4f19785b WSI |
6732 | } else if (s[1] == 'b') { |
6733 | shift = 1; | |
6734 | s += 2; | |
378cc40b | 6735 | } |
02aa26ce | 6736 | /* check for a decimal in disguise */ |
b78218b7 | 6737 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6738 | goto decimal; |
02aa26ce | 6739 | /* so it must be octal */ |
378cc40b LW |
6740 | else |
6741 | shift = 3; | |
9e24b6e2 JH |
6742 | |
6743 | base = bases[shift]; | |
6744 | Base = Bases[shift]; | |
6745 | max = maxima[shift]; | |
02aa26ce | 6746 | |
4f19785b | 6747 | /* read the rest of the number */ |
378cc40b | 6748 | for (;;) { |
9e24b6e2 | 6749 | /* x is used in the overflow test, |
893fe2c2 | 6750 | b is the digit we're adding on. */ |
9e24b6e2 | 6751 | UV x, b; |
55497cff | 6752 | |
378cc40b | 6753 | switch (*s) { |
02aa26ce NT |
6754 | |
6755 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6756 | default: |
6757 | goto out; | |
02aa26ce NT |
6758 | |
6759 | /* _ are ignored */ | |
de3bb511 LW |
6760 | case '_': |
6761 | s++; | |
6762 | break; | |
02aa26ce NT |
6763 | |
6764 | /* 8 and 9 are not octal */ | |
378cc40b | 6765 | case '8': case '9': |
4f19785b | 6766 | if (shift == 3) |
cea2e8a9 | 6767 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6768 | /* FALL THROUGH */ |
02aa26ce NT |
6769 | |
6770 | /* octal digits */ | |
4f19785b | 6771 | case '2': case '3': case '4': |
378cc40b | 6772 | case '5': case '6': case '7': |
4f19785b | 6773 | if (shift == 1) |
cea2e8a9 | 6774 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6775 | /* FALL THROUGH */ |
6776 | ||
6777 | case '0': case '1': | |
02aa26ce | 6778 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6779 | goto digit; |
02aa26ce NT |
6780 | |
6781 | /* hex digits */ | |
378cc40b LW |
6782 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6783 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6784 | /* make sure they said 0x */ |
378cc40b LW |
6785 | if (shift != 4) |
6786 | goto out; | |
55497cff | 6787 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6788 | |
6789 | /* Prepare to put the digit we have onto the end | |
6790 | of the number so far. We check for overflows. | |
6791 | */ | |
6792 | ||
55497cff | 6793 | digit: |
9e24b6e2 JH |
6794 | if (!overflowed) { |
6795 | x = u << shift; /* make room for the digit */ | |
6796 | ||
6797 | if ((x >> shift) != u | |
6798 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6799 | dTHR; | |
6800 | overflowed = TRUE; | |
6801 | n = (NV) u; | |
767a6a26 PM |
6802 | if (ckWARN_d(WARN_OVERFLOW)) |
6803 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6804 | "Integer overflow in %s number", |
6805 | base); | |
6806 | } else | |
6807 | u = x | b; /* add the digit to the end */ | |
6808 | } | |
6809 | if (overflowed) { | |
6810 | n *= nvshift[shift]; | |
6811 | /* If an NV has not enough bits in its | |
6812 | * mantissa to represent an UV this summing of | |
6813 | * small low-order numbers is a waste of time | |
6814 | * (because the NV cannot preserve the | |
6815 | * low-order bits anyway): we could just | |
6816 | * remember when did we overflow and in the | |
6817 | * end just multiply n by the right | |
6818 | * amount. */ | |
6819 | n += (NV) b; | |
55497cff | 6820 | } |
378cc40b LW |
6821 | break; |
6822 | } | |
6823 | } | |
02aa26ce NT |
6824 | |
6825 | /* if we get here, we had success: make a scalar value from | |
6826 | the number. | |
6827 | */ | |
378cc40b | 6828 | out: |
79072805 | 6829 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6830 | if (overflowed) { |
6831 | dTHR; | |
767a6a26 PM |
6832 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6833 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6834 | "%s number > %s non-portable", |
6835 | Base, max); | |
6836 | sv_setnv(sv, n); | |
6837 | } | |
6838 | else { | |
15041a67 | 6839 | #if UVSIZE > 4 |
9e24b6e2 | 6840 | dTHR; |
767a6a26 PM |
6841 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6842 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6843 | "%s number > %s non-portable", |
6844 | Base, max); | |
2cc4c2dc | 6845 | #endif |
9e24b6e2 JH |
6846 | sv_setuv(sv, u); |
6847 | } | |
2cc4c2dc | 6848 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6849 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6850 | } |
6851 | break; | |
02aa26ce NT |
6852 | |
6853 | /* | |
6854 | handle decimal numbers. | |
6855 | we're also sent here when we read a 0 as the first digit | |
6856 | */ | |
378cc40b LW |
6857 | case '1': case '2': case '3': case '4': case '5': |
6858 | case '6': case '7': case '8': case '9': case '.': | |
6859 | decimal: | |
3280af22 NIS |
6860 | d = PL_tokenbuf; |
6861 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6862 | floatit = FALSE; |
02aa26ce NT |
6863 | |
6864 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6865 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6866 | /* skip underscores, checking for misplaced ones |
6867 | if -w is on | |
6868 | */ | |
93a17b20 | 6869 | if (*s == '_') { |
d008e5eb | 6870 | dTHR; /* only for ckWARN */ |
599cee73 | 6871 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6872 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6873 | lastub = ++s; |
6874 | } | |
fc36a67e | 6875 | else { |
02aa26ce | 6876 | /* check for end of fixed-length buffer */ |
fc36a67e | 6877 | if (d >= e) |
cea2e8a9 | 6878 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6879 | /* if we're ok, copy the character */ |
378cc40b | 6880 | *d++ = *s++; |
fc36a67e | 6881 | } |
378cc40b | 6882 | } |
02aa26ce NT |
6883 | |
6884 | /* final misplaced underbar check */ | |
d008e5eb GS |
6885 | if (lastub && s - lastub != 3) { |
6886 | dTHR; | |
6887 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6888 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6889 | } |
02aa26ce NT |
6890 | |
6891 | /* read a decimal portion if there is one. avoid | |
6892 | 3..5 being interpreted as the number 3. followed | |
6893 | by .5 | |
6894 | */ | |
2f3197b3 | 6895 | if (*s == '.' && s[1] != '.') { |
79072805 | 6896 | floatit = TRUE; |
378cc40b | 6897 | *d++ = *s++; |
02aa26ce NT |
6898 | |
6899 | /* copy, ignoring underbars, until we run out of | |
6900 | digits. Note: no misplaced underbar checks! | |
6901 | */ | |
fc36a67e | 6902 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6903 | /* fixed length buffer check */ |
fc36a67e | 6904 | if (d >= e) |
cea2e8a9 | 6905 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6906 | if (*s != '_') |
6907 | *d++ = *s; | |
378cc40b | 6908 | } |
dd629d5b GS |
6909 | if (*s == '.' && isDIGIT(s[1])) { |
6910 | /* oops, it's really a v-string, but without the "v" */ | |
6911 | s = start - 1; | |
6912 | goto vstring; | |
6913 | } | |
378cc40b | 6914 | } |
02aa26ce NT |
6915 | |
6916 | /* read exponent part, if present */ | |
93a17b20 | 6917 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6918 | floatit = TRUE; |
6919 | s++; | |
02aa26ce NT |
6920 | |
6921 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6922 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6923 | |
6924 | /* allow positive or negative exponent */ | |
378cc40b LW |
6925 | if (*s == '+' || *s == '-') |
6926 | *d++ = *s++; | |
02aa26ce NT |
6927 | |
6928 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6929 | while (isDIGIT(*s)) { |
6930 | if (d >= e) | |
cea2e8a9 | 6931 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6932 | *d++ = *s++; |
fc36a67e | 6933 | } |
378cc40b | 6934 | } |
02aa26ce NT |
6935 | |
6936 | /* terminate the string */ | |
378cc40b | 6937 | *d = '\0'; |
02aa26ce NT |
6938 | |
6939 | /* make an sv from the string */ | |
79072805 | 6940 | sv = NEWSV(92,0); |
097ee67d | 6941 | |
65f19062 GS |
6942 | /* unfortunately this monster needs to be on one line or |
6943 | makedepend will be confused. */ | |
6944 | #if (defined(USE_64_BIT_INT) && (!defined(HAS_STRTOLL)|| !defined(HAS_STRTOULL))) || (!defined(USE_64_BIT_INT) && (!defined(HAS_STRTOL) || !defined(HAS_STRTOUL))) | |
0b7fceb9 MU |
6945 | |
6946 | /* | |
6947 | No working strto[u]l[l]. Since atoi() doesn't do range checks, | |
6948 | we need to do this the hard way. | |
6949 | */ | |
6950 | ||
097ee67d | 6951 | value = Atof(PL_tokenbuf); |
02aa26ce NT |
6952 | |
6953 | /* | |
6954 | See if we can make do with an integer value without loss of | |
6955 | precision. We use I_V to cast to an int, because some | |
6956 | compilers have issues. Then we try casting it back and see | |
6957 | if it was the same. We only do this if we know we | |
6958 | specifically read an integer. | |
6959 | ||
6960 | Note: if floatit is true, then we don't need to do the | |
6961 | conversion at all. | |
6962 | */ | |
e312add1 GS |
6963 | { |
6964 | UV tryuv = U_V(value); | |
6965 | if (!floatit && (NV)tryuv == value) { | |
6966 | if (tryuv <= IV_MAX) | |
6967 | sv_setiv(sv, (IV)tryuv); | |
6968 | else | |
6969 | sv_setuv(sv, tryuv); | |
6970 | } | |
5a89daa8 | 6971 | else |
e312add1 | 6972 | sv_setnv(sv, value); |
5a89daa8 | 6973 | } |
0b7fceb9 MU |
6974 | #else |
6975 | /* | |
6976 | strtol/strtoll sets errno to ERANGE if the number is too big | |
6977 | for an integer. We try to do an integer conversion first | |
6978 | if no characters indicating "float" have been found. | |
6979 | */ | |
6980 | ||
6981 | if (!floatit) { | |
0b7fceb9 MU |
6982 | IV iv; |
6983 | UV uv; | |
6984 | errno = 0; | |
c239479b | 6985 | if (*PL_tokenbuf == '-') |
96989be3 | 6986 | iv = Strtol(PL_tokenbuf, (char**)NULL, 10); |
c239479b | 6987 | else |
96989be3 | 6988 | uv = Strtoul(PL_tokenbuf, (char**)NULL, 10); |
55eb892c | 6989 | if (errno) |
0b7fceb9 MU |
6990 | floatit = TRUE; /* probably just too large */ |
6991 | else if (*PL_tokenbuf == '-') | |
6992 | sv_setiv(sv, iv); | |
6993 | else | |
c239479b | 6994 | sv_setuv(sv, uv); |
0b7fceb9 MU |
6995 | } |
6996 | if (floatit) { | |
55eb892c | 6997 | value = Atof(PL_tokenbuf); |
96989be3 GS |
6998 | sv_setnv(sv, value); |
6999 | } | |
0b7fceb9 | 7000 | #endif |
b8403495 JH |
7001 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7002 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 7003 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7004 | (floatit ? "float" : "integer"), |
7005 | sv, Nullsv, NULL); | |
378cc40b | 7006 | break; |
0b7fceb9 | 7007 | |
e312add1 | 7008 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7009 | case 'v': |
dd629d5b | 7010 | vstring: |
a7cb1f99 | 7011 | { |
a7cb1f99 GS |
7012 | char *pos = s; |
7013 | pos++; | |
dd629d5b | 7014 | while (isDIGIT(*pos) || *pos == '_') |
a7cb1f99 | 7015 | pos++; |
e526c9e6 | 7016 | if (!isALPHA(*pos)) { |
f83ee824 | 7017 | UV rev; |
560a288e | 7018 | U8 tmpbuf[UTF8_MAXLEN]; |
a7cb1f99 | 7019 | U8 *tmpend; |
3818b22b | 7020 | bool utf8 = FALSE; |
a7cb1f99 GS |
7021 | s++; /* get past 'v' */ |
7022 | ||
7023 | sv = NEWSV(92,5); | |
a7cb1f99 GS |
7024 | sv_setpvn(sv, "", 0); |
7025 | ||
e526c9e6 | 7026 | for (;;) { |
3cb0bbe5 GS |
7027 | if (*s == '0' && isDIGIT(s[1])) |
7028 | yyerror("Octal number in vector unsupported"); | |
dd629d5b GS |
7029 | rev = 0; |
7030 | { | |
7031 | /* this is atoi() that tolerates underscores */ | |
7032 | char *end = pos; | |
7033 | UV mult = 1; | |
7034 | while (--end >= s) { | |
7035 | UV orev; | |
7036 | if (*end == '_') | |
7037 | continue; | |
7038 | orev = rev; | |
7039 | rev += (*end - '0') * mult; | |
7040 | mult *= 10; | |
7041 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
7042 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
7043 | "Integer overflow in decimal number"); | |
7044 | } | |
7045 | } | |
e526c9e6 GS |
7046 | tmpend = uv_to_utf8(tmpbuf, rev); |
7047 | utf8 = utf8 || rev > 127; | |
7048 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
7049 | if (*pos == '.' && isDIGIT(pos[1])) | |
7050 | s = ++pos; | |
3818b22b | 7051 | else { |
e526c9e6 GS |
7052 | s = pos; |
7053 | break; | |
3818b22b | 7054 | } |
dd629d5b | 7055 | while (isDIGIT(*pos) || *pos == '_') |
e526c9e6 GS |
7056 | pos++; |
7057 | } | |
a7cb1f99 GS |
7058 | |
7059 | SvPOK_on(sv); | |
a7cb1f99 | 7060 | SvREADONLY_on(sv); |
560a288e | 7061 | if (utf8) { |
3818b22b | 7062 | SvUTF8_on(sv); |
560a288e GS |
7063 | sv_utf8_downgrade(sv, TRUE); |
7064 | } | |
a7cb1f99 GS |
7065 | } |
7066 | } | |
7067 | break; | |
79072805 | 7068 | } |
a687059c | 7069 | |
02aa26ce NT |
7070 | /* make the op for the constant and return */ |
7071 | ||
a7cb1f99 GS |
7072 | if (sv) |
7073 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
7074 | else | |
7075 | yylval.opval = Nullop; | |
a687059c | 7076 | |
378cc40b LW |
7077 | return s; |
7078 | } | |
7079 | ||
76e3520e | 7080 | STATIC char * |
cea2e8a9 | 7081 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7082 | { |
11343788 | 7083 | dTHR; |
79072805 | 7084 | register char *eol; |
378cc40b | 7085 | register char *t; |
79cb57f6 | 7086 | SV *stuff = newSVpvn("",0); |
79072805 | 7087 | bool needargs = FALSE; |
378cc40b | 7088 | |
79072805 | 7089 | while (!needargs) { |
85e6fe83 | 7090 | if (*s == '.' || *s == '}') { |
79072805 | 7091 | /*SUPPRESS 530*/ |
51882d45 GS |
7092 | #ifdef PERL_STRICT_CR |
7093 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
7094 | #else | |
7095 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
7096 | #endif | |
6a65c6a0 | 7097 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7098 | break; |
7099 | } | |
3280af22 | 7100 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7101 | eol = strchr(s,'\n'); |
0f85fab0 | 7102 | if (!eol++) |
3280af22 | 7103 | eol = PL_bufend; |
0f85fab0 LW |
7104 | } |
7105 | else | |
3280af22 | 7106 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7107 | if (*s != '#') { |
a0d0e21e LW |
7108 | for (t = s; t < eol; t++) { |
7109 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7110 | needargs = FALSE; | |
7111 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7112 | } |
a0d0e21e LW |
7113 | if (*t == '@' || *t == '^') |
7114 | needargs = TRUE; | |
378cc40b | 7115 | } |
a0d0e21e | 7116 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
7117 | #ifndef PERL_STRICT_CR |
7118 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
7119 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7120 | end[-2] = '\n'; | |
7121 | end[-1] = '\0'; | |
7122 | SvCUR(stuff)--; | |
7123 | } | |
7124 | #endif | |
79072805 LW |
7125 | } |
7126 | s = eol; | |
3280af22 NIS |
7127 | if (PL_rsfp) { |
7128 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7129 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7130 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 7131 | if (!s) { |
3280af22 | 7132 | s = PL_bufptr; |
79072805 | 7133 | yyerror("Format not terminated"); |
378cc40b LW |
7134 | break; |
7135 | } | |
378cc40b | 7136 | } |
463ee0b2 | 7137 | incline(s); |
79072805 | 7138 | } |
a0d0e21e LW |
7139 | enough: |
7140 | if (SvCUR(stuff)) { | |
3280af22 | 7141 | PL_expect = XTERM; |
79072805 | 7142 | if (needargs) { |
3280af22 NIS |
7143 | PL_lex_state = LEX_NORMAL; |
7144 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7145 | force_next(','); |
7146 | } | |
a0d0e21e | 7147 | else |
3280af22 NIS |
7148 | PL_lex_state = LEX_FORMLINE; |
7149 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7150 | force_next(THING); |
3280af22 | 7151 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7152 | force_next(LSTOP); |
378cc40b | 7153 | } |
79072805 | 7154 | else { |
8990e307 | 7155 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7156 | PL_lex_formbrack = 0; |
7157 | PL_bufptr = s; | |
79072805 LW |
7158 | } |
7159 | return s; | |
378cc40b | 7160 | } |
a687059c | 7161 | |
76e3520e | 7162 | STATIC void |
cea2e8a9 | 7163 | S_set_csh(pTHX) |
a687059c | 7164 | { |
ae986130 | 7165 | #ifdef CSH |
3280af22 NIS |
7166 | if (!PL_cshlen) |
7167 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7168 | #endif |
a687059c | 7169 | } |
463ee0b2 | 7170 | |
ba6d6ac9 | 7171 | I32 |
864dbfa3 | 7172 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7173 | { |
11343788 | 7174 | dTHR; |
3280af22 NIS |
7175 | I32 oldsavestack_ix = PL_savestack_ix; |
7176 | CV* outsidecv = PL_compcv; | |
748a9306 | 7177 | AV* comppadlist; |
8990e307 | 7178 | |
3280af22 NIS |
7179 | if (PL_compcv) { |
7180 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7181 | } |
7766f137 | 7182 | SAVEI32(PL_subline); |
3280af22 NIS |
7183 | save_item(PL_subname); |
7184 | SAVEI32(PL_padix); | |
354992b1 | 7185 | SAVECOMPPAD(); |
3280af22 NIS |
7186 | SAVESPTR(PL_comppad_name); |
7187 | SAVESPTR(PL_compcv); | |
7188 | SAVEI32(PL_comppad_name_fill); | |
7189 | SAVEI32(PL_min_intro_pending); | |
7190 | SAVEI32(PL_max_intro_pending); | |
7191 | SAVEI32(PL_pad_reset_pending); | |
7192 | ||
7193 | PL_compcv = (CV*)NEWSV(1104,0); | |
7194 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7195 | CvFLAGS(PL_compcv) |= flags; | |
7196 | ||
7197 | PL_comppad = newAV(); | |
7198 | av_push(PL_comppad, Nullsv); | |
7199 | PL_curpad = AvARRAY(PL_comppad); | |
7200 | PL_comppad_name = newAV(); | |
7201 | PL_comppad_name_fill = 0; | |
7202 | PL_min_intro_pending = 0; | |
7203 | PL_padix = 0; | |
57843af0 | 7204 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7205 | #ifdef USE_THREADS |
79cb57f6 | 7206 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7207 | PL_curpad[0] = (SV*)newAV(); |
7208 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7209 | #endif /* USE_THREADS */ |
748a9306 LW |
7210 | |
7211 | comppadlist = newAV(); | |
7212 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7213 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7214 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7215 | |
3280af22 NIS |
7216 | CvPADLIST(PL_compcv) = comppadlist; |
7217 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7218 | #ifdef USE_THREADS |
533c011a NIS |
7219 | CvOWNER(PL_compcv) = 0; |
7220 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7221 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7222 | #endif /* USE_THREADS */ |
748a9306 | 7223 | |
8990e307 LW |
7224 | return oldsavestack_ix; |
7225 | } | |
7226 | ||
7227 | int | |
864dbfa3 | 7228 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7229 | { |
11343788 | 7230 | dTHR; |
faef0170 | 7231 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7232 | yyerror(s); |
faef0170 | 7233 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7234 | return 0; |
8990e307 LW |
7235 | } |
7236 | ||
7237 | int | |
864dbfa3 | 7238 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7239 | { |
11343788 | 7240 | dTHR; |
68dc0745 | 7241 | char *where = NULL; |
7242 | char *context = NULL; | |
7243 | int contlen = -1; | |
46fc3d4c | 7244 | SV *msg; |
463ee0b2 | 7245 | |
3280af22 | 7246 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7247 | where = "at EOF"; |
3280af22 NIS |
7248 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7249 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7250 | while (isSPACE(*PL_oldoldbufptr)) | |
7251 | PL_oldoldbufptr++; | |
7252 | context = PL_oldoldbufptr; | |
7253 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7254 | } |
3280af22 NIS |
7255 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7256 | PL_oldbufptr != PL_bufptr) { | |
7257 | while (isSPACE(*PL_oldbufptr)) | |
7258 | PL_oldbufptr++; | |
7259 | context = PL_oldbufptr; | |
7260 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7261 | } |
7262 | else if (yychar > 255) | |
68dc0745 | 7263 | where = "next token ???"; |
cdfb297e GS |
7264 | #ifdef USE_PURE_BISON |
7265 | /* GNU Bison sets the value -2 */ | |
7266 | else if (yychar == -2) { | |
7267 | #else | |
463ee0b2 | 7268 | else if ((yychar & 127) == 127) { |
cdfb297e | 7269 | #endif |
3280af22 NIS |
7270 | if (PL_lex_state == LEX_NORMAL || |
7271 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7272 | where = "at end of line"; |
3280af22 | 7273 | else if (PL_lex_inpat) |
68dc0745 | 7274 | where = "within pattern"; |
463ee0b2 | 7275 | else |
68dc0745 | 7276 | where = "within string"; |
463ee0b2 | 7277 | } |
46fc3d4c | 7278 | else { |
79cb57f6 | 7279 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7280 | if (yychar < 32) |
cea2e8a9 | 7281 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7282 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7283 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7284 | else |
cea2e8a9 | 7285 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7286 | where = SvPVX(where_sv); |
463ee0b2 | 7287 | } |
46fc3d4c | 7288 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7289 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7290 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7291 | if (context) |
cea2e8a9 | 7292 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7293 | else |
cea2e8a9 | 7294 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7295 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7296 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7297 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7298 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7299 | PL_multi_end = 0; |
a0d0e21e | 7300 | } |
faef0170 | 7301 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7302 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7303 | else |
5a844595 GS |
7304 | qerror(msg); |
7305 | if (PL_error_count >= 10) | |
ed094faf | 7306 | Perl_croak(aTHX_ "%s has too many errors.\n", CopFILE(PL_curcop)); |
3280af22 NIS |
7307 | PL_in_my = 0; |
7308 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7309 | return 0; |
7310 | } | |
4e35701f | 7311 | |
161b471a | 7312 | |
51371543 | 7313 | #ifdef PERL_OBJECT |
51371543 GS |
7314 | #include "XSUB.h" |
7315 | #endif | |
7316 | ||
ffb4593c NT |
7317 | /* |
7318 | * restore_rsfp | |
7319 | * Restore a source filter. | |
7320 | */ | |
7321 | ||
51371543 GS |
7322 | static void |
7323 | restore_rsfp(pTHXo_ void *f) | |
7324 | { | |
7325 | PerlIO *fp = (PerlIO*)f; | |
7326 | ||
7327 | if (PL_rsfp == PerlIO_stdin()) | |
7328 | PerlIO_clearerr(PL_rsfp); | |
7329 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7330 | PerlIO_close(PL_rsfp); | |
7331 | PL_rsfp = fp; | |
7332 | } |