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 | 1481 | str = SvPV(res,len); |
f08d6ad9 GS |
1482 | if (!has_utf && SvUTF8(res)) { |
1483 | char *ostart = SvPVX(sv); | |
1484 | SvCUR_set(sv, d - ostart); | |
1485 | SvPOK_on(sv); | |
1486 | sv_utf8_upgrade(sv); | |
1487 | d = SvPVX(sv) + SvCUR(sv); | |
e1992b6d | 1488 | has_utf = TRUE; |
f08d6ad9 | 1489 | } |
423cee85 JH |
1490 | if (len > e - s + 4) { |
1491 | char *odest = SvPVX(sv); | |
1492 | ||
1493 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1494 | d = SvPVX(sv) + (d - odest); | |
1495 | } | |
1496 | Copy(str, d, len, char); | |
1497 | d += len; | |
1498 | SvREFCNT_dec(res); | |
1499 | cont_scan: | |
1500 | s = e + 1; | |
1501 | } | |
1502 | else | |
5777a3f7 | 1503 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1504 | continue; |
1505 | ||
02aa26ce | 1506 | /* \c is a control character */ |
79072805 LW |
1507 | case 'c': |
1508 | s++; | |
9d116dd7 JH |
1509 | #ifdef EBCDIC |
1510 | *d = *s++; | |
1511 | if (isLOWER(*d)) | |
1512 | *d = toUPPER(*d); | |
1513 | *d++ = toCTRL(*d); | |
1514 | #else | |
bbce6d69 | 1515 | len = *s++; |
1516 | *d++ = toCTRL(len); | |
9d116dd7 | 1517 | #endif |
79072805 | 1518 | continue; |
02aa26ce NT |
1519 | |
1520 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1521 | case 'b': |
1522 | *d++ = '\b'; | |
1523 | break; | |
1524 | case 'n': | |
1525 | *d++ = '\n'; | |
1526 | break; | |
1527 | case 'r': | |
1528 | *d++ = '\r'; | |
1529 | break; | |
1530 | case 'f': | |
1531 | *d++ = '\f'; | |
1532 | break; | |
1533 | case 't': | |
1534 | *d++ = '\t'; | |
1535 | break; | |
34a3fe2a PP |
1536 | #ifdef EBCDIC |
1537 | case 'e': | |
1538 | *d++ = '\047'; /* CP 1047 */ | |
1539 | break; | |
1540 | case 'a': | |
1541 | *d++ = '\057'; /* CP 1047 */ | |
1542 | break; | |
1543 | #else | |
79072805 LW |
1544 | case 'e': |
1545 | *d++ = '\033'; | |
1546 | break; | |
1547 | case 'a': | |
1548 | *d++ = '\007'; | |
1549 | break; | |
34a3fe2a | 1550 | #endif |
02aa26ce NT |
1551 | } /* end switch */ |
1552 | ||
79072805 LW |
1553 | s++; |
1554 | continue; | |
02aa26ce NT |
1555 | } /* end if (backslash) */ |
1556 | ||
79072805 | 1557 | *d++ = *s++; |
02aa26ce NT |
1558 | } /* while loop to process each character */ |
1559 | ||
1560 | /* terminate the string and set up the sv */ | |
79072805 | 1561 | *d = '\0'; |
463ee0b2 | 1562 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 | 1563 | SvPOK_on(sv); |
7e2040f0 GS |
1564 | if (has_utf) |
1565 | SvUTF8_on(sv); | |
79072805 | 1566 | |
02aa26ce | 1567 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1568 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1569 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1570 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1571 | } |
02aa26ce | 1572 | |
9b599b2a | 1573 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1574 | if (s > PL_bufptr) { |
1575 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1576 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1577 | sv, Nullsv, |
3280af22 | 1578 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1579 | ? "tr" |
3280af22 | 1580 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1581 | ? "s" |
1582 | : "qq"))); | |
79072805 | 1583 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1584 | } else |
8990e307 | 1585 | SvREFCNT_dec(sv); |
79072805 LW |
1586 | return s; |
1587 | } | |
1588 | ||
ffb4593c NT |
1589 | /* S_intuit_more |
1590 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1591 | * FALSE otherwise. | |
ffb4593c NT |
1592 | * |
1593 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1594 | * | |
1595 | * ->[ and ->{ return TRUE | |
1596 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1597 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1598 | * if we're in a pattern and the first char is a { | |
1599 | * {4,5} (any digits around the comma) returns FALSE | |
1600 | * if we're in a pattern and the first char is a [ | |
1601 | * [] returns FALSE | |
1602 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1603 | * character class or not. It has to deal with things like | |
1604 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1605 | * anything else returns TRUE | |
1606 | */ | |
1607 | ||
9cbb5ea2 GS |
1608 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1609 | ||
76e3520e | 1610 | STATIC int |
cea2e8a9 | 1611 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1612 | { |
3280af22 | 1613 | if (PL_lex_brackets) |
79072805 LW |
1614 | return TRUE; |
1615 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1616 | return TRUE; | |
1617 | if (*s != '{' && *s != '[') | |
1618 | return FALSE; | |
3280af22 | 1619 | if (!PL_lex_inpat) |
79072805 LW |
1620 | return TRUE; |
1621 | ||
1622 | /* In a pattern, so maybe we have {n,m}. */ | |
1623 | if (*s == '{') { | |
1624 | s++; | |
1625 | if (!isDIGIT(*s)) | |
1626 | return TRUE; | |
1627 | while (isDIGIT(*s)) | |
1628 | s++; | |
1629 | if (*s == ',') | |
1630 | s++; | |
1631 | while (isDIGIT(*s)) | |
1632 | s++; | |
1633 | if (*s == '}') | |
1634 | return FALSE; | |
1635 | return TRUE; | |
1636 | ||
1637 | } | |
1638 | ||
1639 | /* On the other hand, maybe we have a character class */ | |
1640 | ||
1641 | s++; | |
1642 | if (*s == ']' || *s == '^') | |
1643 | return FALSE; | |
1644 | else { | |
ffb4593c | 1645 | /* this is terrifying, and it works */ |
79072805 LW |
1646 | int weight = 2; /* let's weigh the evidence */ |
1647 | char seen[256]; | |
f27ffc4a | 1648 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1649 | char *send = strchr(s,']'); |
3280af22 | 1650 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1651 | |
1652 | if (!send) /* has to be an expression */ | |
1653 | return TRUE; | |
1654 | ||
1655 | Zero(seen,256,char); | |
1656 | if (*s == '$') | |
1657 | weight -= 3; | |
1658 | else if (isDIGIT(*s)) { | |
1659 | if (s[1] != ']') { | |
1660 | if (isDIGIT(s[1]) && s[2] == ']') | |
1661 | weight -= 10; | |
1662 | } | |
1663 | else | |
1664 | weight -= 100; | |
1665 | } | |
1666 | for (; s < send; s++) { | |
1667 | last_un_char = un_char; | |
1668 | un_char = (unsigned char)*s; | |
1669 | switch (*s) { | |
1670 | case '@': | |
1671 | case '&': | |
1672 | case '$': | |
1673 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1674 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1675 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1676 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1677 | weight -= 100; |
1678 | else | |
1679 | weight -= 10; | |
1680 | } | |
1681 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1682 | strchr("[#!%*<>()-=",s[1])) { |
1683 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1684 | weight -= 10; |
1685 | else | |
1686 | weight -= 1; | |
1687 | } | |
1688 | break; | |
1689 | case '\\': | |
1690 | un_char = 254; | |
1691 | if (s[1]) { | |
93a17b20 | 1692 | if (strchr("wds]",s[1])) |
79072805 LW |
1693 | weight += 100; |
1694 | else if (seen['\''] || seen['"']) | |
1695 | weight += 1; | |
93a17b20 | 1696 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1697 | weight += 40; |
1698 | else if (isDIGIT(s[1])) { | |
1699 | weight += 40; | |
1700 | while (s[1] && isDIGIT(s[1])) | |
1701 | s++; | |
1702 | } | |
1703 | } | |
1704 | else | |
1705 | weight += 100; | |
1706 | break; | |
1707 | case '-': | |
1708 | if (s[1] == '\\') | |
1709 | weight += 50; | |
93a17b20 | 1710 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1711 | weight += 30; |
93a17b20 | 1712 | if (strchr("zZ79~",s[1])) |
79072805 | 1713 | weight += 30; |
f27ffc4a GS |
1714 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1715 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1716 | break; |
1717 | default: | |
93a17b20 | 1718 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1719 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1720 | char *d = tmpbuf; | |
1721 | while (isALPHA(*s)) | |
1722 | *d++ = *s++; | |
1723 | *d = '\0'; | |
1724 | if (keyword(tmpbuf, d - tmpbuf)) | |
1725 | weight -= 150; | |
1726 | } | |
1727 | if (un_char == last_un_char + 1) | |
1728 | weight += 5; | |
1729 | weight -= seen[un_char]; | |
1730 | break; | |
1731 | } | |
1732 | seen[un_char]++; | |
1733 | } | |
1734 | if (weight >= 0) /* probably a character class */ | |
1735 | return FALSE; | |
1736 | } | |
1737 | ||
1738 | return TRUE; | |
1739 | } | |
ffed7fef | 1740 | |
ffb4593c NT |
1741 | /* |
1742 | * S_intuit_method | |
1743 | * | |
1744 | * Does all the checking to disambiguate | |
1745 | * foo bar | |
1746 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1747 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1748 | * | |
1749 | * First argument is the stuff after the first token, e.g. "bar". | |
1750 | * | |
1751 | * Not a method if bar is a filehandle. | |
1752 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1753 | * Not a method if it's really "Foo $bar" | |
1754 | * Method if it's "foo $bar" | |
1755 | * Not a method if it's really "print foo $bar" | |
1756 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1757 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1758 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1759 | * => |
1760 | */ | |
1761 | ||
76e3520e | 1762 | STATIC int |
cea2e8a9 | 1763 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1764 | { |
1765 | char *s = start + (*start == '$'); | |
3280af22 | 1766 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1767 | STRLEN len; |
1768 | GV* indirgv; | |
1769 | ||
1770 | if (gv) { | |
b6c543e3 | 1771 | CV *cv; |
a0d0e21e LW |
1772 | if (GvIO(gv)) |
1773 | return 0; | |
b6c543e3 IZ |
1774 | if ((cv = GvCVu(gv))) { |
1775 | char *proto = SvPVX(cv); | |
1776 | if (proto) { | |
1777 | if (*proto == ';') | |
1778 | proto++; | |
1779 | if (*proto == '*') | |
1780 | return 0; | |
1781 | } | |
1782 | } else | |
a0d0e21e LW |
1783 | gv = 0; |
1784 | } | |
8903cb82 | 1785 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1786 | /* start is the beginning of the possible filehandle/object, |
1787 | * and s is the end of it | |
1788 | * tmpbuf is a copy of it | |
1789 | */ | |
1790 | ||
a0d0e21e | 1791 | if (*start == '$') { |
3280af22 | 1792 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1793 | return 0; |
1794 | s = skipspace(s); | |
3280af22 NIS |
1795 | PL_bufptr = start; |
1796 | PL_expect = XREF; | |
a0d0e21e LW |
1797 | return *s == '(' ? FUNCMETH : METHOD; |
1798 | } | |
1799 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1800 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1801 | len -= 2; | |
1802 | tmpbuf[len] = '\0'; | |
1803 | goto bare_package; | |
1804 | } | |
1805 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1806 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1807 | return 0; |
1808 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1809 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1810 | s = skipspace(s); |
3280af22 | 1811 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1812 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1813 | bare_package: |
3280af22 | 1814 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1815 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1816 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1817 | PL_expect = XTERM; | |
a0d0e21e | 1818 | force_next(WORD); |
3280af22 | 1819 | PL_bufptr = s; |
a0d0e21e LW |
1820 | return *s == '(' ? FUNCMETH : METHOD; |
1821 | } | |
1822 | } | |
1823 | return 0; | |
1824 | } | |
1825 | ||
ffb4593c NT |
1826 | /* |
1827 | * S_incl_perldb | |
1828 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1829 | * is set, it will return the contents of that, otherwise a | |
1830 | * compile-time require of perl5db.pl. | |
1831 | */ | |
1832 | ||
76e3520e | 1833 | STATIC char* |
cea2e8a9 | 1834 | S_incl_perldb(pTHX) |
a0d0e21e | 1835 | { |
3280af22 | 1836 | if (PL_perldb) { |
76e3520e | 1837 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1838 | |
1839 | if (pdb) | |
1840 | return pdb; | |
61bb5906 | 1841 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1842 | return "BEGIN { require 'perl5db.pl' }"; |
1843 | } | |
1844 | return ""; | |
1845 | } | |
1846 | ||
1847 | ||
16d20bd9 AD |
1848 | /* Encoded script support. filter_add() effectively inserts a |
1849 | * 'pre-processing' function into the current source input stream. | |
1850 | * Note that the filter function only applies to the current source file | |
1851 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1852 | * | |
1853 | * The datasv parameter (which may be NULL) can be used to pass | |
1854 | * private data to this instance of the filter. The filter function | |
1855 | * can recover the SV using the FILTER_DATA macro and use it to | |
1856 | * store private buffers and state information. | |
1857 | * | |
1858 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1859 | * and the IoDIRP field is used to store the function pointer, |
1860 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1861 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1862 | * private use must be set using malloc'd pointers. | |
1863 | */ | |
16d20bd9 AD |
1864 | |
1865 | SV * | |
864dbfa3 | 1866 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1867 | { |
f4c556ac GS |
1868 | if (!funcp) |
1869 | return Nullsv; | |
1870 | ||
3280af22 NIS |
1871 | if (!PL_rsfp_filters) |
1872 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1873 | if (!datasv) |
8c52afec | 1874 | datasv = NEWSV(255,0); |
16d20bd9 | 1875 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1876 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1877 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1878 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1879 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1880 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1881 | av_unshift(PL_rsfp_filters, 1); |
1882 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1883 | return(datasv); |
1884 | } | |
1885 | ||
1886 | ||
1887 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1888 | void |
864dbfa3 | 1889 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1890 | { |
e0c19803 | 1891 | SV *datasv; |
f4c556ac | 1892 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1893 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1894 | return; |
1895 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1896 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1897 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1898 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1899 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1900 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1901 | |
16d20bd9 AD |
1902 | return; |
1903 | } | |
1904 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1905 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1906 | } |
1907 | ||
1908 | ||
1909 | /* Invoke the n'th filter function for the current rsfp. */ | |
1910 | I32 | |
864dbfa3 | 1911 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1912 | |
1913 | ||
1914 | /* 0 = read one text line */ | |
a0d0e21e | 1915 | { |
16d20bd9 AD |
1916 | filter_t funcp; |
1917 | SV *datasv = NULL; | |
e50aee73 | 1918 | |
3280af22 | 1919 | if (!PL_rsfp_filters) |
16d20bd9 | 1920 | return -1; |
3280af22 | 1921 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1922 | /* Provide a default input filter to make life easy. */ |
1923 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1924 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1925 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1926 | if (maxlen) { |
1927 | /* Want a block */ | |
1928 | int len ; | |
1929 | int old_len = SvCUR(buf_sv) ; | |
1930 | ||
1931 | /* ensure buf_sv is large enough */ | |
1932 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1933 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1934 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1935 | return -1; /* error */ |
1936 | else | |
1937 | return 0 ; /* end of file */ | |
1938 | } | |
16d20bd9 AD |
1939 | SvCUR_set(buf_sv, old_len + len) ; |
1940 | } else { | |
1941 | /* Want a line */ | |
3280af22 NIS |
1942 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1943 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1944 | return -1; /* error */ |
1945 | else | |
1946 | return 0 ; /* end of file */ | |
1947 | } | |
16d20bd9 AD |
1948 | } |
1949 | return SvCUR(buf_sv); | |
1950 | } | |
1951 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1952 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1953 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1954 | "filter_read %d: skipped (filter deleted)\n", | |
1955 | idx)); | |
16d20bd9 AD |
1956 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1957 | } | |
1958 | /* Get function pointer hidden within datasv */ | |
1959 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1960 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1961 | "filter_read %d: via function %p (%s)\n", | |
1962 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1963 | /* Call function. The function is expected to */ |
1964 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1965 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1966 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1967 | } |
1968 | ||
76e3520e | 1969 | STATIC char * |
cea2e8a9 | 1970 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1971 | { |
c39cd008 | 1972 | #ifdef PERL_CR_FILTER |
3280af22 | 1973 | if (!PL_rsfp_filters) { |
c39cd008 | 1974 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1975 | } |
1976 | #endif | |
3280af22 | 1977 | if (PL_rsfp_filters) { |
16d20bd9 | 1978 | |
55497cff | 1979 | if (!append) |
1980 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1981 | if (FILTER_READ(0, sv, 0) > 0) |
1982 | return ( SvPVX(sv) ) ; | |
1983 | else | |
1984 | return Nullch ; | |
1985 | } | |
9d116dd7 | 1986 | else |
fd049845 | 1987 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1988 | } |
1989 | ||
1990 | ||
748a9306 LW |
1991 | #ifdef DEBUGGING |
1992 | static char* exp_name[] = | |
09bef843 SB |
1993 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1994 | "ATTRTERM", "TERMBLOCK" | |
1995 | }; | |
748a9306 | 1996 | #endif |
463ee0b2 | 1997 | |
02aa26ce NT |
1998 | /* |
1999 | yylex | |
2000 | ||
2001 | Works out what to call the token just pulled out of the input | |
2002 | stream. The yacc parser takes care of taking the ops we return and | |
2003 | stitching them into a tree. | |
2004 | ||
2005 | Returns: | |
2006 | PRIVATEREF | |
2007 | ||
2008 | Structure: | |
2009 | if read an identifier | |
2010 | if we're in a my declaration | |
2011 | croak if they tried to say my($foo::bar) | |
2012 | build the ops for a my() declaration | |
2013 | if it's an access to a my() variable | |
2014 | are we in a sort block? | |
2015 | croak if my($a); $a <=> $b | |
2016 | build ops for access to a my() variable | |
2017 | if in a dq string, and they've said @foo and we can't find @foo | |
2018 | croak | |
2019 | build ops for a bareword | |
2020 | if we already built the token before, use it. | |
2021 | */ | |
2022 | ||
864dbfa3 GS |
2023 | int |
2024 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 2025 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 2026 | #else |
cea2e8a9 | 2027 | Perl_yylex(pTHX) |
864dbfa3 | 2028 | #endif |
378cc40b | 2029 | { |
11343788 | 2030 | dTHR; |
79072805 | 2031 | register char *s; |
378cc40b | 2032 | register char *d; |
79072805 | 2033 | register I32 tmp; |
463ee0b2 | 2034 | STRLEN len; |
161b471a NIS |
2035 | GV *gv = Nullgv; |
2036 | GV **gvp = 0; | |
a687059c | 2037 | |
a1a0e61e TD |
2038 | #ifdef USE_PURE_BISON |
2039 | yylval_pointer = lvalp; | |
2040 | yychar_pointer = lcharp; | |
2041 | #endif | |
2042 | ||
02aa26ce | 2043 | /* check if there's an identifier for us to look at */ |
3280af22 | 2044 | if (PL_pending_ident) { |
02aa26ce | 2045 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
2046 | char pit = PL_pending_ident; |
2047 | PL_pending_ident = 0; | |
bbce6d69 | 2048 | |
02aa26ce NT |
2049 | /* if we're in a my(), we can't allow dynamics here. |
2050 | $foo'bar has already been turned into $foo::bar, so | |
2051 | just check for colons. | |
2052 | ||
2053 | if it's a legal name, the OP is a PADANY. | |
2054 | */ | |
3280af22 | 2055 | if (PL_in_my) { |
77ca0c92 | 2056 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
2057 | if (strchr(PL_tokenbuf,':')) |
2058 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
2059 | "variable %s in \"our\"", | |
2060 | PL_tokenbuf)); | |
77ca0c92 LW |
2061 | tmp = pad_allocmy(PL_tokenbuf); |
2062 | } | |
2063 | else { | |
2064 | if (strchr(PL_tokenbuf,':')) | |
2065 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 2066 | |
77ca0c92 LW |
2067 | yylval.opval = newOP(OP_PADANY, 0); |
2068 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
2069 | return PRIVATEREF; | |
2070 | } | |
bbce6d69 | 2071 | } |
2072 | ||
02aa26ce NT |
2073 | /* |
2074 | build the ops for accesses to a my() variable. | |
2075 | ||
2076 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
2077 | then used in a comparison. This catches most, but not | |
2078 | all cases. For instance, it catches | |
2079 | sort { my($a); $a <=> $b } | |
2080 | but not | |
2081 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2082 | (although why you'd do that is anyone's guess). | |
2083 | */ | |
2084 | ||
3280af22 | 2085 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2086 | #ifdef USE_THREADS |
54b9620d | 2087 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2088 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2089 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2090 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2091 | { |
2faa37cc | 2092 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2093 | yylval.opval->op_targ = tmp; |
2094 | return PRIVATEREF; | |
2095 | } | |
2096 | #endif /* USE_THREADS */ | |
3280af22 | 2097 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2098 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2099 | /* might be an "our" variable" */ |
f472eb5c | 2100 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2101 | /* build ops for a bareword */ |
f472eb5c GS |
2102 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2103 | sv_catpvn(sym, "::", 2); | |
2104 | sv_catpv(sym, PL_tokenbuf+1); | |
2105 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2106 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2107 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2108 | (PL_in_eval |
f472eb5c GS |
2109 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2110 | : TRUE | |
77ca0c92 LW |
2111 | ), |
2112 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2113 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2114 | : SVt_PVHV)); | |
2115 | return WORD; | |
2116 | } | |
2117 | ||
02aa26ce | 2118 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2119 | if (PL_last_lop_op == OP_SORT && |
2120 | PL_tokenbuf[0] == '$' && | |
2121 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2122 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2123 | { |
3280af22 NIS |
2124 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2125 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2126 | d++) |
2127 | { | |
2128 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2129 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2130 | PL_tokenbuf); |
a863c7d1 | 2131 | } |
bbce6d69 | 2132 | } |
2133 | } | |
bbce6d69 | 2134 | |
a863c7d1 MB |
2135 | yylval.opval = newOP(OP_PADANY, 0); |
2136 | yylval.opval->op_targ = tmp; | |
2137 | return PRIVATEREF; | |
2138 | } | |
bbce6d69 | 2139 | } |
2140 | ||
02aa26ce NT |
2141 | /* |
2142 | Whine if they've said @foo in a doublequoted string, | |
2143 | and @foo isn't a variable we can find in the symbol | |
2144 | table. | |
2145 | */ | |
3280af22 NIS |
2146 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2147 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2148 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2149 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2150 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2151 | } |
2152 | ||
02aa26ce | 2153 | /* build ops for a bareword */ |
3280af22 | 2154 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2155 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2156 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2157 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2158 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2159 | : SVt_PVHV)); |
2160 | return WORD; | |
2161 | } | |
2162 | ||
02aa26ce NT |
2163 | /* no identifier pending identification */ |
2164 | ||
3280af22 | 2165 | switch (PL_lex_state) { |
79072805 LW |
2166 | #ifdef COMMENTARY |
2167 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2168 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2169 | break; | |
2170 | #endif | |
2171 | ||
09bef843 | 2172 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2173 | case LEX_KNOWNEXT: |
3280af22 NIS |
2174 | PL_nexttoke--; |
2175 | yylval = PL_nextval[PL_nexttoke]; | |
2176 | if (!PL_nexttoke) { | |
2177 | PL_lex_state = PL_lex_defer; | |
2178 | PL_expect = PL_lex_expect; | |
2179 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2180 | } |
3280af22 | 2181 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2182 | |
02aa26ce | 2183 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2184 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2185 | */ |
79072805 LW |
2186 | case LEX_INTERPCASEMOD: |
2187 | #ifdef DEBUGGING | |
3280af22 | 2188 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2189 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2190 | #endif |
02aa26ce | 2191 | /* handle \E or end of string */ |
3280af22 | 2192 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2193 | char oldmod; |
02aa26ce NT |
2194 | |
2195 | /* if at a \E */ | |
3280af22 NIS |
2196 | if (PL_lex_casemods) { |
2197 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2198 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2199 | |
3280af22 NIS |
2200 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2201 | PL_bufptr += 2; | |
2202 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2203 | } |
79072805 LW |
2204 | return ')'; |
2205 | } | |
3280af22 NIS |
2206 | if (PL_bufptr != PL_bufend) |
2207 | PL_bufptr += 2; | |
2208 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2209 | return yylex(); |
79072805 LW |
2210 | } |
2211 | else { | |
3280af22 | 2212 | s = PL_bufptr + 1; |
79072805 LW |
2213 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2214 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2215 | if (strchr("LU", *s) && |
3280af22 | 2216 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2217 | { |
3280af22 | 2218 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2219 | return ')'; |
2220 | } | |
3280af22 NIS |
2221 | if (PL_lex_casemods > 10) { |
2222 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2223 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2224 | SAVEFREEPV(newlb); |
3280af22 | 2225 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2226 | } |
2227 | } | |
3280af22 NIS |
2228 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2229 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2230 | PL_lex_state = LEX_INTERPCONCAT; | |
2231 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2232 | force_next('('); |
2233 | if (*s == 'l') | |
3280af22 | 2234 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2235 | else if (*s == 'u') |
3280af22 | 2236 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2237 | else if (*s == 'L') |
3280af22 | 2238 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2239 | else if (*s == 'U') |
3280af22 | 2240 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2241 | else if (*s == 'Q') |
3280af22 | 2242 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2243 | else |
cea2e8a9 | 2244 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2245 | PL_bufptr = s + 1; |
79072805 | 2246 | force_next(FUNC); |
3280af22 NIS |
2247 | if (PL_lex_starts) { |
2248 | s = PL_bufptr; | |
2249 | PL_lex_starts = 0; | |
79072805 LW |
2250 | Aop(OP_CONCAT); |
2251 | } | |
2252 | else | |
cea2e8a9 | 2253 | return yylex(); |
79072805 LW |
2254 | } |
2255 | ||
55497cff | 2256 | case LEX_INTERPPUSH: |
2257 | return sublex_push(); | |
2258 | ||
79072805 | 2259 | case LEX_INTERPSTART: |
3280af22 | 2260 | if (PL_bufptr == PL_bufend) |
79072805 | 2261 | return sublex_done(); |
3280af22 NIS |
2262 | PL_expect = XTERM; |
2263 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2264 | PL_lex_state = LEX_INTERPNORMAL; | |
2265 | if (PL_lex_dojoin) { | |
2266 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2267 | force_next(','); |
554b3eca | 2268 | #ifdef USE_THREADS |
533c011a NIS |
2269 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2270 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2271 | force_next(PRIVATEREF); |
2272 | #else | |
a0d0e21e | 2273 | force_ident("\"", '$'); |
554b3eca | 2274 | #endif /* USE_THREADS */ |
3280af22 | 2275 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2276 | force_next('$'); |
3280af22 | 2277 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2278 | force_next('('); |
3280af22 | 2279 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2280 | force_next(FUNC); |
2281 | } | |
3280af22 NIS |
2282 | if (PL_lex_starts++) { |
2283 | s = PL_bufptr; | |
79072805 LW |
2284 | Aop(OP_CONCAT); |
2285 | } | |
cea2e8a9 | 2286 | return yylex(); |
79072805 LW |
2287 | |
2288 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2289 | if (intuit_more(PL_bufptr)) { |
2290 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2291 | break; |
2292 | } | |
2293 | /* FALL THROUGH */ | |
2294 | ||
2295 | case LEX_INTERPEND: | |
3280af22 NIS |
2296 | if (PL_lex_dojoin) { |
2297 | PL_lex_dojoin = FALSE; | |
2298 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2299 | return ')'; |
2300 | } | |
43a16006 | 2301 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2302 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2303 | { |
e9fa98b2 | 2304 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2305 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2306 | PL_lex_repl = Nullsv; |
2307 | } | |
79072805 LW |
2308 | /* FALLTHROUGH */ |
2309 | case LEX_INTERPCONCAT: | |
2310 | #ifdef DEBUGGING | |
3280af22 | 2311 | if (PL_lex_brackets) |
cea2e8a9 | 2312 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2313 | #endif |
3280af22 | 2314 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2315 | return sublex_done(); |
2316 | ||
3280af22 NIS |
2317 | if (SvIVX(PL_linestr) == '\'') { |
2318 | SV *sv = newSVsv(PL_linestr); | |
2319 | if (!PL_lex_inpat) | |
76e3520e | 2320 | sv = tokeq(sv); |
3280af22 | 2321 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2322 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2323 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2324 | s = PL_bufend; |
79072805 LW |
2325 | } |
2326 | else { | |
3280af22 | 2327 | s = scan_const(PL_bufptr); |
79072805 | 2328 | if (*s == '\\') |
3280af22 | 2329 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2330 | else |
3280af22 | 2331 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2332 | } |
2333 | ||
3280af22 NIS |
2334 | if (s != PL_bufptr) { |
2335 | PL_nextval[PL_nexttoke] = yylval; | |
2336 | PL_expect = XTERM; | |
79072805 | 2337 | force_next(THING); |
3280af22 | 2338 | if (PL_lex_starts++) |
79072805 LW |
2339 | Aop(OP_CONCAT); |
2340 | else { | |
3280af22 | 2341 | PL_bufptr = s; |
cea2e8a9 | 2342 | return yylex(); |
79072805 LW |
2343 | } |
2344 | } | |
2345 | ||
cea2e8a9 | 2346 | return yylex(); |
a0d0e21e | 2347 | case LEX_FORMLINE: |
3280af22 NIS |
2348 | PL_lex_state = LEX_NORMAL; |
2349 | s = scan_formline(PL_bufptr); | |
2350 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2351 | goto rightbracket; |
2352 | OPERATOR(';'); | |
79072805 LW |
2353 | } |
2354 | ||
3280af22 NIS |
2355 | s = PL_bufptr; |
2356 | PL_oldoldbufptr = PL_oldbufptr; | |
2357 | PL_oldbufptr = s; | |
79072805 | 2358 | DEBUG_p( { |
bf49b057 GS |
2359 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2360 | exp_name[PL_expect], s); | |
79072805 | 2361 | } ) |
463ee0b2 LW |
2362 | |
2363 | retry: | |
378cc40b LW |
2364 | switch (*s) { |
2365 | default: | |
7e2040f0 | 2366 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2367 | goto keylookup; |
cea2e8a9 | 2368 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2369 | case 4: |
2370 | case 26: | |
2371 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2372 | case 0: |
3280af22 NIS |
2373 | if (!PL_rsfp) { |
2374 | PL_last_uni = 0; | |
2375 | PL_last_lop = 0; | |
2376 | if (PL_lex_brackets) | |
d98d5fff | 2377 | yyerror("Missing right curly or square bracket"); |
79072805 | 2378 | TOKEN(0); |
463ee0b2 | 2379 | } |
3280af22 | 2380 | if (s++ < PL_bufend) |
a687059c | 2381 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2382 | PL_last_uni = 0; |
2383 | PL_last_lop = 0; | |
2384 | if (!PL_in_eval && !PL_preambled) { | |
2385 | PL_preambled = TRUE; | |
2386 | sv_setpv(PL_linestr,incl_perldb()); | |
2387 | if (SvCUR(PL_linestr)) | |
2388 | sv_catpv(PL_linestr,";"); | |
2389 | if (PL_preambleav){ | |
2390 | while(AvFILLp(PL_preambleav) >= 0) { | |
2391 | SV *tmpsv = av_shift(PL_preambleav); | |
2392 | sv_catsv(PL_linestr, tmpsv); | |
2393 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2394 | sv_free(tmpsv); |
2395 | } | |
3280af22 NIS |
2396 | sv_free((SV*)PL_preambleav); |
2397 | PL_preambleav = NULL; | |
91b7def8 | 2398 | } |
3280af22 NIS |
2399 | if (PL_minus_n || PL_minus_p) { |
2400 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2401 | if (PL_minus_l) | |
2402 | sv_catpv(PL_linestr,"chomp;"); | |
2403 | if (PL_minus_a) { | |
8fd239a7 CS |
2404 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2405 | if (gv) | |
2406 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2407 | if (PL_minus_F) { |
2408 | if (strchr("/'\"", *PL_splitstr) | |
2409 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2410 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2411 | else { |
2412 | char delim; | |
2413 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2414 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2415 | delim = *s; |
cea2e8a9 | 2416 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2417 | "q" + (delim == '\''), delim); |
3280af22 | 2418 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2419 | if (*s == '\\') |
3280af22 NIS |
2420 | sv_catpvn(PL_linestr, "\\", 1); |
2421 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2422 | } |
cea2e8a9 | 2423 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2424 | } |
2304df62 AD |
2425 | } |
2426 | else | |
3280af22 | 2427 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2428 | } |
79072805 | 2429 | } |
3280af22 NIS |
2430 | sv_catpv(PL_linestr, "\n"); |
2431 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2432 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2433 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2434 | SV *sv = NEWSV(85,0); |
2435 | ||
2436 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2437 | sv_setsv(sv,PL_linestr); |
57843af0 | 2438 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2439 | } |
79072805 | 2440 | goto retry; |
a687059c | 2441 | } |
e929a76b | 2442 | do { |
3280af22 | 2443 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2444 | fake_eof: |
3280af22 NIS |
2445 | if (PL_rsfp) { |
2446 | if (PL_preprocess && !PL_in_eval) | |
2447 | (void)PerlProc_pclose(PL_rsfp); | |
2448 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2449 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2450 | else |
3280af22 NIS |
2451 | (void)PerlIO_close(PL_rsfp); |
2452 | PL_rsfp = Nullfp; | |
4a9ae47a | 2453 | PL_doextract = FALSE; |
395c3793 | 2454 | } |
3280af22 NIS |
2455 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2456 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2457 | sv_catpv(PL_linestr,";}"); | |
2458 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2459 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2460 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2461 | goto retry; |
2462 | } | |
3280af22 NIS |
2463 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2464 | sv_setpv(PL_linestr,""); | |
79072805 | 2465 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2466 | } |
3280af22 | 2467 | if (PL_doextract) { |
a0d0e21e | 2468 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2469 | PL_doextract = FALSE; |
a0d0e21e LW |
2470 | |
2471 | /* Incest with pod. */ | |
2472 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2473 | sv_setpv(PL_linestr, ""); |
2474 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2475 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2476 | PL_doextract = FALSE; | |
a0d0e21e LW |
2477 | } |
2478 | } | |
463ee0b2 | 2479 | incline(s); |
3280af22 NIS |
2480 | } while (PL_doextract); |
2481 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2482 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2483 | SV *sv = NEWSV(85,0); |
a687059c | 2484 | |
93a17b20 | 2485 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2486 | sv_setsv(sv,PL_linestr); |
57843af0 | 2487 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2488 | } |
3280af22 | 2489 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2490 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2491 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2492 | s++; |
a0d0e21e | 2493 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2494 | s++; |
44a8e56a | 2495 | d = Nullch; |
3280af22 | 2496 | if (!PL_in_eval) { |
44a8e56a | 2497 | if (*s == '#' && *(s+1) == '!') |
2498 | d = s + 2; | |
2499 | #ifdef ALTERNATE_SHEBANG | |
2500 | else { | |
2501 | static char as[] = ALTERNATE_SHEBANG; | |
2502 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2503 | d = s + (sizeof(as) - 1); | |
2504 | } | |
2505 | #endif /* ALTERNATE_SHEBANG */ | |
2506 | } | |
2507 | if (d) { | |
b8378b72 | 2508 | char *ipath; |
774d564b | 2509 | char *ipathend; |
b8378b72 | 2510 | |
774d564b | 2511 | while (isSPACE(*d)) |
b8378b72 CS |
2512 | d++; |
2513 | ipath = d; | |
774d564b | 2514 | while (*d && !isSPACE(*d)) |
2515 | d++; | |
2516 | ipathend = d; | |
2517 | ||
2518 | #ifdef ARG_ZERO_IS_SCRIPT | |
2519 | if (ipathend > ipath) { | |
2520 | /* | |
2521 | * HP-UX (at least) sets argv[0] to the script name, | |
2522 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2523 | * at least, set argv[0] to the basename of the Perl | |
2524 | * interpreter. So, having found "#!", we'll set it right. | |
2525 | */ | |
2526 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2527 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2528 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2529 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2530 | SvSETMAGIC(x); |
2531 | } | |
774d564b | 2532 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2533 | } |
774d564b | 2534 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2535 | |
2536 | /* | |
2537 | * Look for options. | |
2538 | */ | |
748a9306 | 2539 | d = instr(s,"perl -"); |
84e30d1a | 2540 | if (!d) { |
748a9306 | 2541 | d = instr(s,"perl"); |
84e30d1a GS |
2542 | #if defined(DOSISH) |
2543 | /* avoid getting into infinite loops when shebang | |
2544 | * line contains "Perl" rather than "perl" */ | |
2545 | if (!d) { | |
2546 | for (d = ipathend-4; d >= ipath; --d) { | |
2547 | if ((*d == 'p' || *d == 'P') | |
2548 | && !ibcmp(d, "perl", 4)) | |
2549 | { | |
2550 | break; | |
2551 | } | |
2552 | } | |
2553 | if (d < ipath) | |
2554 | d = Nullch; | |
2555 | } | |
2556 | #endif | |
2557 | } | |
44a8e56a | 2558 | #ifdef ALTERNATE_SHEBANG |
2559 | /* | |
2560 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2561 | * character that can be part of a Perl expression, then if | |
2562 | * we see it but not "perl", we're probably looking at the | |
2563 | * start of Perl code, not a request to hand off to some | |
2564 | * other interpreter. Similarly, if "perl" is there, but | |
2565 | * not in the first 'word' of the line, we assume the line | |
2566 | * contains the start of the Perl program. | |
44a8e56a | 2567 | */ |
2568 | if (d && *s != '#') { | |
774d564b | 2569 | char *c = ipath; |
44a8e56a | 2570 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2571 | c++; | |
2572 | if (c < d) | |
2573 | d = Nullch; /* "perl" not in first word; ignore */ | |
2574 | else | |
2575 | *s = '#'; /* Don't try to parse shebang line */ | |
2576 | } | |
774d564b | 2577 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2578 | if (!d && |
44a8e56a | 2579 | *s == '#' && |
774d564b | 2580 | ipathend > ipath && |
3280af22 | 2581 | !PL_minus_c && |
748a9306 | 2582 | !instr(s,"indir") && |
3280af22 | 2583 | instr(PL_origargv[0],"perl")) |
748a9306 | 2584 | { |
9f68db38 | 2585 | char **newargv; |
9f68db38 | 2586 | |
774d564b | 2587 | *ipathend = '\0'; |
2588 | s = ipathend + 1; | |
3280af22 | 2589 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2590 | s++; |
3280af22 NIS |
2591 | if (s < PL_bufend) { |
2592 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2593 | newargv[1] = s; |
3280af22 | 2594 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2595 | s++; |
2596 | *s = '\0'; | |
3280af22 | 2597 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2598 | } |
2599 | else | |
3280af22 | 2600 | newargv = PL_origargv; |
774d564b | 2601 | newargv[0] = ipath; |
80252599 | 2602 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2603 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2604 | } |
748a9306 | 2605 | if (d) { |
3280af22 NIS |
2606 | U32 oldpdb = PL_perldb; |
2607 | bool oldn = PL_minus_n; | |
2608 | bool oldp = PL_minus_p; | |
748a9306 LW |
2609 | |
2610 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2611 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2612 | |
2613 | if (*d++ == '-') { | |
8cc95fdb | 2614 | do { |
2615 | if (*d == 'M' || *d == 'm') { | |
2616 | char *m = d; | |
2617 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2618 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2619 | (int)(d - m), m); |
2620 | } | |
2621 | d = moreswitches(d); | |
2622 | } while (d); | |
155aba94 GS |
2623 | if ((PERLDB_LINE && !oldpdb) || |
2624 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2625 | /* if we have already added "LINE: while (<>) {", |
2626 | we must not do it again */ | |
748a9306 | 2627 | { |
3280af22 NIS |
2628 | sv_setpv(PL_linestr, ""); |
2629 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2630 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2631 | PL_preambled = FALSE; | |
84902520 | 2632 | if (PERLDB_LINE) |
3280af22 | 2633 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2634 | goto retry; |
2635 | } | |
a0d0e21e | 2636 | } |
79072805 | 2637 | } |
9f68db38 | 2638 | } |
79072805 | 2639 | } |
3280af22 NIS |
2640 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2641 | PL_bufptr = s; | |
2642 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2643 | return yylex(); |
ae986130 | 2644 | } |
378cc40b | 2645 | goto retry; |
4fdae800 | 2646 | case '\r': |
6a27c188 | 2647 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2648 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2649 | Perl_croak(aTHX_ | |
54310121 | 2650 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2651 | #endif |
4fdae800 | 2652 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2653 | s++; |
2654 | goto retry; | |
378cc40b | 2655 | case '#': |
e929a76b | 2656 | case '\n': |
3280af22 NIS |
2657 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2658 | d = PL_bufend; | |
a687059c | 2659 | while (s < d && *s != '\n') |
378cc40b | 2660 | s++; |
0f85fab0 | 2661 | if (s < d) |
378cc40b | 2662 | s++; |
463ee0b2 | 2663 | incline(s); |
3280af22 NIS |
2664 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2665 | PL_bufptr = s; | |
2666 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2667 | return yylex(); |
a687059c | 2668 | } |
378cc40b | 2669 | } |
a687059c | 2670 | else { |
378cc40b | 2671 | *s = '\0'; |
3280af22 | 2672 | PL_bufend = s; |
a687059c | 2673 | } |
378cc40b LW |
2674 | goto retry; |
2675 | case '-': | |
79072805 | 2676 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2677 | s++; |
3280af22 | 2678 | PL_bufptr = s; |
748a9306 LW |
2679 | tmp = *s++; |
2680 | ||
3280af22 | 2681 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2682 | s++; |
2683 | ||
2684 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2685 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2686 | OPERATOR('-'); /* unary minus */ |
2687 | } | |
3280af22 NIS |
2688 | PL_last_uni = PL_oldbufptr; |
2689 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2690 | switch (tmp) { |
79072805 LW |
2691 | case 'r': FTST(OP_FTEREAD); |
2692 | case 'w': FTST(OP_FTEWRITE); | |
2693 | case 'x': FTST(OP_FTEEXEC); | |
2694 | case 'o': FTST(OP_FTEOWNED); | |
2695 | case 'R': FTST(OP_FTRREAD); | |
2696 | case 'W': FTST(OP_FTRWRITE); | |
2697 | case 'X': FTST(OP_FTREXEC); | |
2698 | case 'O': FTST(OP_FTROWNED); | |
2699 | case 'e': FTST(OP_FTIS); | |
2700 | case 'z': FTST(OP_FTZERO); | |
2701 | case 's': FTST(OP_FTSIZE); | |
2702 | case 'f': FTST(OP_FTFILE); | |
2703 | case 'd': FTST(OP_FTDIR); | |
2704 | case 'l': FTST(OP_FTLINK); | |
2705 | case 'p': FTST(OP_FTPIPE); | |
2706 | case 'S': FTST(OP_FTSOCK); | |
2707 | case 'u': FTST(OP_FTSUID); | |
2708 | case 'g': FTST(OP_FTSGID); | |
2709 | case 'k': FTST(OP_FTSVTX); | |
2710 | case 'b': FTST(OP_FTBLK); | |
2711 | case 'c': FTST(OP_FTCHR); | |
2712 | case 't': FTST(OP_FTTTY); | |
2713 | case 'T': FTST(OP_FTTEXT); | |
2714 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2715 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2716 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2717 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2718 | default: |
cea2e8a9 | 2719 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2720 | break; |
2721 | } | |
2722 | } | |
a687059c LW |
2723 | tmp = *s++; |
2724 | if (*s == tmp) { | |
2725 | s++; | |
3280af22 | 2726 | if (PL_expect == XOPERATOR) |
79072805 LW |
2727 | TERM(POSTDEC); |
2728 | else | |
2729 | OPERATOR(PREDEC); | |
2730 | } | |
2731 | else if (*s == '>') { | |
2732 | s++; | |
2733 | s = skipspace(s); | |
7e2040f0 | 2734 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2735 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2736 | TOKEN(ARROW); |
79072805 | 2737 | } |
748a9306 LW |
2738 | else if (*s == '$') |
2739 | OPERATOR(ARROW); | |
463ee0b2 | 2740 | else |
748a9306 | 2741 | TERM(ARROW); |
a687059c | 2742 | } |
3280af22 | 2743 | if (PL_expect == XOPERATOR) |
79072805 LW |
2744 | Aop(OP_SUBTRACT); |
2745 | else { | |
3280af22 | 2746 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2747 | check_uni(); |
79072805 | 2748 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2749 | } |
79072805 | 2750 | |
378cc40b | 2751 | case '+': |
a687059c LW |
2752 | tmp = *s++; |
2753 | if (*s == tmp) { | |
378cc40b | 2754 | s++; |
3280af22 | 2755 | if (PL_expect == XOPERATOR) |
79072805 LW |
2756 | TERM(POSTINC); |
2757 | else | |
2758 | OPERATOR(PREINC); | |
378cc40b | 2759 | } |
3280af22 | 2760 | if (PL_expect == XOPERATOR) |
79072805 LW |
2761 | Aop(OP_ADD); |
2762 | else { | |
3280af22 | 2763 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2764 | check_uni(); |
a687059c | 2765 | OPERATOR('+'); |
2f3197b3 | 2766 | } |
a687059c | 2767 | |
378cc40b | 2768 | case '*': |
3280af22 NIS |
2769 | if (PL_expect != XOPERATOR) { |
2770 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2771 | PL_expect = XOPERATOR; | |
2772 | force_ident(PL_tokenbuf, '*'); | |
2773 | if (!*PL_tokenbuf) | |
a0d0e21e | 2774 | PREREF('*'); |
79072805 | 2775 | TERM('*'); |
a687059c | 2776 | } |
79072805 LW |
2777 | s++; |
2778 | if (*s == '*') { | |
a687059c | 2779 | s++; |
79072805 | 2780 | PWop(OP_POW); |
a687059c | 2781 | } |
79072805 LW |
2782 | Mop(OP_MULTIPLY); |
2783 | ||
378cc40b | 2784 | case '%': |
3280af22 | 2785 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2786 | ++s; |
2787 | Mop(OP_MODULO); | |
a687059c | 2788 | } |
3280af22 NIS |
2789 | PL_tokenbuf[0] = '%'; |
2790 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2791 | if (!PL_tokenbuf[1]) { | |
2792 | if (s == PL_bufend) | |
bbce6d69 | 2793 | yyerror("Final % should be \\% or %name"); |
2794 | PREREF('%'); | |
a687059c | 2795 | } |
3280af22 | 2796 | PL_pending_ident = '%'; |
bbce6d69 | 2797 | TERM('%'); |
a687059c | 2798 | |
378cc40b | 2799 | case '^': |
79072805 | 2800 | s++; |
a0d0e21e | 2801 | BOop(OP_BIT_XOR); |
79072805 | 2802 | case '[': |
3280af22 | 2803 | PL_lex_brackets++; |
79072805 | 2804 | /* FALL THROUGH */ |
378cc40b | 2805 | case '~': |
378cc40b | 2806 | case ',': |
378cc40b LW |
2807 | tmp = *s++; |
2808 | OPERATOR(tmp); | |
a0d0e21e LW |
2809 | case ':': |
2810 | if (s[1] == ':') { | |
2811 | len = 0; | |
2812 | goto just_a_word; | |
2813 | } | |
2814 | s++; | |
09bef843 SB |
2815 | switch (PL_expect) { |
2816 | OP *attrs; | |
2817 | case XOPERATOR: | |
2818 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2819 | break; | |
2820 | PL_bufptr = s; /* update in case we back off */ | |
2821 | goto grabattrs; | |
2822 | case XATTRBLOCK: | |
2823 | PL_expect = XBLOCK; | |
2824 | goto grabattrs; | |
2825 | case XATTRTERM: | |
2826 | PL_expect = XTERMBLOCK; | |
2827 | grabattrs: | |
2828 | s = skipspace(s); | |
2829 | attrs = Nullop; | |
7e2040f0 | 2830 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2831 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2832 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2833 | if (tmp < 0) tmp = -tmp; | |
2834 | switch (tmp) { | |
2835 | case KEY_or: | |
2836 | case KEY_and: | |
2837 | case KEY_for: | |
2838 | case KEY_unless: | |
2839 | case KEY_if: | |
2840 | case KEY_while: | |
2841 | case KEY_until: | |
2842 | goto got_attrs; | |
2843 | default: | |
2844 | break; | |
2845 | } | |
2846 | } | |
09bef843 SB |
2847 | if (*d == '(') { |
2848 | d = scan_str(d,TRUE,TRUE); | |
2849 | if (!d) { | |
2850 | if (PL_lex_stuff) { | |
2851 | SvREFCNT_dec(PL_lex_stuff); | |
2852 | PL_lex_stuff = Nullsv; | |
2853 | } | |
2854 | /* MUST advance bufptr here to avoid bogus | |
2855 | "at end of line" context messages from yyerror(). | |
2856 | */ | |
2857 | PL_bufptr = s + len; | |
2858 | yyerror("Unterminated attribute parameter in attribute list"); | |
2859 | if (attrs) | |
2860 | op_free(attrs); | |
2861 | return 0; /* EOF indicator */ | |
2862 | } | |
2863 | } | |
2864 | if (PL_lex_stuff) { | |
2865 | SV *sv = newSVpvn(s, len); | |
2866 | sv_catsv(sv, PL_lex_stuff); | |
2867 | attrs = append_elem(OP_LIST, attrs, | |
2868 | newSVOP(OP_CONST, 0, sv)); | |
2869 | SvREFCNT_dec(PL_lex_stuff); | |
2870 | PL_lex_stuff = Nullsv; | |
2871 | } | |
2872 | else { | |
2873 | attrs = append_elem(OP_LIST, attrs, | |
2874 | newSVOP(OP_CONST, 0, | |
2875 | newSVpvn(s, len))); | |
2876 | } | |
2877 | s = skipspace(d); | |
0120eecf | 2878 | if (*s == ':' && s[1] != ':') |
09bef843 | 2879 | s = skipspace(s+1); |
0120eecf GS |
2880 | else if (s == d) |
2881 | break; /* require real whitespace or :'s */ | |
09bef843 | 2882 | } |
f9829d6b GS |
2883 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
2884 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
2885 | char q = ((*s == '\'') ? '"' : '\''); |
2886 | /* If here for an expression, and parsed no attrs, back off. */ | |
2887 | if (tmp == '=' && !attrs) { | |
2888 | s = PL_bufptr; | |
2889 | break; | |
2890 | } | |
2891 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2892 | context messages from yyerror(). | |
2893 | */ | |
2894 | PL_bufptr = s; | |
2895 | if (!*s) | |
2896 | yyerror("Unterminated attribute list"); | |
2897 | else | |
2898 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2899 | q, *s, q)); | |
2900 | if (attrs) | |
2901 | op_free(attrs); | |
2902 | OPERATOR(':'); | |
2903 | } | |
f9829d6b | 2904 | got_attrs: |
09bef843 SB |
2905 | if (attrs) { |
2906 | PL_nextval[PL_nexttoke].opval = attrs; | |
2907 | force_next(THING); | |
2908 | } | |
2909 | TOKEN(COLONATTR); | |
2910 | } | |
a0d0e21e | 2911 | OPERATOR(':'); |
8990e307 LW |
2912 | case '(': |
2913 | s++; | |
3280af22 NIS |
2914 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2915 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2916 | else |
3280af22 | 2917 | PL_expect = XTERM; |
a0d0e21e | 2918 | TOKEN('('); |
378cc40b | 2919 | case ';': |
57843af0 GS |
2920 | if (CopLINE(PL_curcop) < PL_copline) |
2921 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2922 | tmp = *s++; |
2923 | OPERATOR(tmp); | |
2924 | case ')': | |
378cc40b | 2925 | tmp = *s++; |
16d20bd9 AD |
2926 | s = skipspace(s); |
2927 | if (*s == '{') | |
2928 | PREBLOCK(tmp); | |
378cc40b | 2929 | TERM(tmp); |
79072805 LW |
2930 | case ']': |
2931 | s++; | |
3280af22 | 2932 | if (PL_lex_brackets <= 0) |
d98d5fff | 2933 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2934 | else |
3280af22 NIS |
2935 | --PL_lex_brackets; |
2936 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2937 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2938 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2939 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2940 | } |
2941 | } | |
4633a7c4 | 2942 | TERM(']'); |
79072805 LW |
2943 | case '{': |
2944 | leftbracket: | |
79072805 | 2945 | s++; |
3280af22 NIS |
2946 | if (PL_lex_brackets > 100) { |
2947 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2948 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2949 | SAVEFREEPV(newlb); |
3280af22 | 2950 | PL_lex_brackstack = newlb; |
8990e307 LW |
2951 | } |
2952 | } | |
3280af22 | 2953 | switch (PL_expect) { |
a0d0e21e | 2954 | case XTERM: |
3280af22 | 2955 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2956 | s--; |
2957 | PRETERMBLOCK(DO); | |
2958 | } | |
3280af22 NIS |
2959 | if (PL_oldoldbufptr == PL_last_lop) |
2960 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2961 | else |
3280af22 | 2962 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2963 | OPERATOR(HASHBRACK); |
a0d0e21e | 2964 | case XOPERATOR: |
3280af22 | 2965 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2966 | s++; |
44a8e56a | 2967 | d = s; |
3280af22 NIS |
2968 | PL_tokenbuf[0] = '\0'; |
2969 | if (d < PL_bufend && *d == '-') { | |
2970 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2971 | d++; |
3280af22 | 2972 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2973 | d++; |
2974 | } | |
7e2040f0 | 2975 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 2976 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2977 | FALSE, &len); |
3280af22 | 2978 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2979 | d++; |
2980 | if (*d == '}') { | |
3280af22 | 2981 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2982 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2983 | if (minus) | |
2984 | force_next('-'); | |
748a9306 LW |
2985 | } |
2986 | } | |
2987 | /* FALL THROUGH */ | |
09bef843 | 2988 | case XATTRBLOCK: |
748a9306 | 2989 | case XBLOCK: |
3280af22 NIS |
2990 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2991 | PL_expect = XSTATE; | |
a0d0e21e | 2992 | break; |
09bef843 | 2993 | case XATTRTERM: |
a0d0e21e | 2994 | case XTERMBLOCK: |
3280af22 NIS |
2995 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2996 | PL_expect = XSTATE; | |
a0d0e21e LW |
2997 | break; |
2998 | default: { | |
2999 | char *t; | |
3280af22 NIS |
3000 | if (PL_oldoldbufptr == PL_last_lop) |
3001 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3002 | else |
3280af22 | 3003 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3004 | s = skipspace(s); |
09ecc4b6 | 3005 | if (*s == '}') |
a0d0e21e | 3006 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
3007 | /* This hack serves to disambiguate a pair of curlies |
3008 | * as being a block or an anon hash. Normally, expectation | |
3009 | * determines that, but in cases where we're not in a | |
3010 | * position to expect anything in particular (like inside | |
3011 | * eval"") we have to resolve the ambiguity. This code | |
3012 | * covers the case where the first term in the curlies is a | |
3013 | * quoted string. Most other cases need to be explicitly | |
3014 | * disambiguated by prepending a `+' before the opening | |
3015 | * curly in order to force resolution as an anon hash. | |
3016 | * | |
3017 | * XXX should probably propagate the outer expectation | |
3018 | * into eval"" to rely less on this hack, but that could | |
3019 | * potentially break current behavior of eval"". | |
3020 | * GSAR 97-07-21 | |
3021 | */ | |
3022 | t = s; | |
3023 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3024 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3025 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3026 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3027 | t++; | |
3028 | t++; | |
a0d0e21e | 3029 | } |
b8a4b1be | 3030 | else if (*s == 'q') { |
3280af22 | 3031 | if (++t < PL_bufend |
b8a4b1be | 3032 | && (!isALNUM(*t) |
3280af22 | 3033 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3034 | && !isALNUM(*t)))) |
3035 | { | |
b8a4b1be GS |
3036 | char *tmps; |
3037 | char open, close, term; | |
3038 | I32 brackets = 1; | |
3039 | ||
3280af22 | 3040 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
3041 | t++; |
3042 | term = *t; | |
3043 | open = term; | |
3044 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3045 | term = tmps[5]; | |
3046 | close = term; | |
3047 | if (open == close) | |
3280af22 NIS |
3048 | for (t++; t < PL_bufend; t++) { |
3049 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3050 | t++; |
6d07e5e9 | 3051 | else if (*t == open) |
b8a4b1be GS |
3052 | break; |
3053 | } | |
3054 | else | |
3280af22 NIS |
3055 | for (t++; t < PL_bufend; t++) { |
3056 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3057 | t++; |
6d07e5e9 | 3058 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3059 | break; |
3060 | else if (*t == open) | |
3061 | brackets++; | |
3062 | } | |
3063 | } | |
3064 | t++; | |
a0d0e21e | 3065 | } |
7e2040f0 | 3066 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3067 | t += UTF8SKIP(t); |
7e2040f0 | 3068 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3069 | t += UTF8SKIP(t); |
a0d0e21e | 3070 | } |
3280af22 | 3071 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3072 | t++; |
b8a4b1be GS |
3073 | /* if comma follows first term, call it an anon hash */ |
3074 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3075 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3076 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3077 | OPERATOR(HASHBRACK); |
3280af22 | 3078 | if (PL_expect == XREF) |
4e4e412b | 3079 | PL_expect = XTERM; |
a0d0e21e | 3080 | else { |
3280af22 NIS |
3081 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3082 | PL_expect = XSTATE; | |
a0d0e21e | 3083 | } |
8990e307 | 3084 | } |
a0d0e21e | 3085 | break; |
463ee0b2 | 3086 | } |
57843af0 | 3087 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3088 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3089 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3090 | TOKEN('{'); |
378cc40b | 3091 | case '}': |
79072805 LW |
3092 | rightbracket: |
3093 | s++; | |
3280af22 | 3094 | if (PL_lex_brackets <= 0) |
d98d5fff | 3095 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3096 | else |
3280af22 NIS |
3097 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
3098 | if (PL_lex_brackets < PL_lex_formbrack) | |
3099 | PL_lex_formbrack = 0; | |
3100 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3101 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3102 | if (PL_expect & XFAKEBRACK) { |
3103 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3104 | PL_lex_state = LEX_INTERPEND; |
3105 | PL_bufptr = s; | |
cea2e8a9 | 3106 | return yylex(); /* ignore fake brackets */ |
79072805 | 3107 | } |
fa83b5b6 | 3108 | if (*s == '-' && s[1] == '>') |
3280af22 | 3109 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3110 | else if (*s != '[' && *s != '{') |
3280af22 | 3111 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3112 | } |
3113 | } | |
9059aa12 LW |
3114 | if (PL_expect & XFAKEBRACK) { |
3115 | PL_expect &= XENUMMASK; | |
3280af22 | 3116 | PL_bufptr = s; |
cea2e8a9 | 3117 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3118 | } |
79072805 LW |
3119 | force_next('}'); |
3120 | TOKEN(';'); | |
378cc40b LW |
3121 | case '&': |
3122 | s++; | |
3123 | tmp = *s++; | |
3124 | if (tmp == '&') | |
a0d0e21e | 3125 | AOPERATOR(ANDAND); |
378cc40b | 3126 | s--; |
3280af22 | 3127 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3128 | if (ckWARN(WARN_SEMICOLON) |
3129 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3130 | { | |
57843af0 | 3131 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3132 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3133 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3134 | } |
79072805 | 3135 | BAop(OP_BIT_AND); |
463ee0b2 | 3136 | } |
79072805 | 3137 | |
3280af22 NIS |
3138 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3139 | if (*PL_tokenbuf) { | |
3140 | PL_expect = XOPERATOR; | |
3141 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3142 | } |
79072805 LW |
3143 | else |
3144 | PREREF('&'); | |
c07a80fd | 3145 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3146 | TERM('&'); |
3147 | ||
378cc40b LW |
3148 | case '|': |
3149 | s++; | |
3150 | tmp = *s++; | |
3151 | if (tmp == '|') | |
a0d0e21e | 3152 | AOPERATOR(OROR); |
378cc40b | 3153 | s--; |
79072805 | 3154 | BOop(OP_BIT_OR); |
378cc40b LW |
3155 | case '=': |
3156 | s++; | |
3157 | tmp = *s++; | |
3158 | if (tmp == '=') | |
79072805 LW |
3159 | Eop(OP_EQ); |
3160 | if (tmp == '>') | |
3161 | OPERATOR(','); | |
378cc40b | 3162 | if (tmp == '~') |
79072805 | 3163 | PMop(OP_MATCH); |
599cee73 | 3164 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3165 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3166 | s--; |
3280af22 NIS |
3167 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3168 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3169 | { |
3280af22 NIS |
3170 | if (PL_in_eval && !PL_rsfp) { |
3171 | d = PL_bufend; | |
a5f75d66 AD |
3172 | while (s < d) { |
3173 | if (*s++ == '\n') { | |
3174 | incline(s); | |
3175 | if (strnEQ(s,"=cut",4)) { | |
3176 | s = strchr(s,'\n'); | |
3177 | if (s) | |
3178 | s++; | |
3179 | else | |
3180 | s = d; | |
3181 | incline(s); | |
3182 | goto retry; | |
3183 | } | |
3184 | } | |
3185 | } | |
3186 | goto retry; | |
3187 | } | |
3280af22 NIS |
3188 | s = PL_bufend; |
3189 | PL_doextract = TRUE; | |
a0d0e21e LW |
3190 | goto retry; |
3191 | } | |
3280af22 | 3192 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3193 | char *t; |
51882d45 | 3194 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3195 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3196 | #else |
3197 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3198 | #endif | |
a0d0e21e LW |
3199 | if (*t == '\n' || *t == '#') { |
3200 | s--; | |
3280af22 | 3201 | PL_expect = XBLOCK; |
a0d0e21e LW |
3202 | goto leftbracket; |
3203 | } | |
79072805 | 3204 | } |
a0d0e21e LW |
3205 | yylval.ival = 0; |
3206 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3207 | case '!': |
3208 | s++; | |
3209 | tmp = *s++; | |
3210 | if (tmp == '=') | |
79072805 | 3211 | Eop(OP_NE); |
378cc40b | 3212 | if (tmp == '~') |
79072805 | 3213 | PMop(OP_NOT); |
378cc40b LW |
3214 | s--; |
3215 | OPERATOR('!'); | |
3216 | case '<': | |
3280af22 | 3217 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3218 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3219 | check_uni(); |
79072805 LW |
3220 | if (s[1] == '<') |
3221 | s = scan_heredoc(s); | |
3222 | else | |
3223 | s = scan_inputsymbol(s); | |
3224 | TERM(sublex_start()); | |
378cc40b LW |
3225 | } |
3226 | s++; | |
3227 | tmp = *s++; | |
3228 | if (tmp == '<') | |
79072805 | 3229 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3230 | if (tmp == '=') { |
3231 | tmp = *s++; | |
3232 | if (tmp == '>') | |
79072805 | 3233 | Eop(OP_NCMP); |
395c3793 | 3234 | s--; |
79072805 | 3235 | Rop(OP_LE); |
395c3793 | 3236 | } |
378cc40b | 3237 | s--; |
79072805 | 3238 | Rop(OP_LT); |
378cc40b LW |
3239 | case '>': |
3240 | s++; | |
3241 | tmp = *s++; | |
3242 | if (tmp == '>') | |
79072805 | 3243 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3244 | if (tmp == '=') |
79072805 | 3245 | Rop(OP_GE); |
378cc40b | 3246 | s--; |
79072805 | 3247 | Rop(OP_GT); |
378cc40b LW |
3248 | |
3249 | case '$': | |
bbce6d69 | 3250 | CLINE; |
3251 | ||
3280af22 NIS |
3252 | if (PL_expect == XOPERATOR) { |
3253 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3254 | PL_expect = XTERM; | |
a0d0e21e | 3255 | depcom(); |
bbce6d69 | 3256 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3257 | } |
8990e307 | 3258 | } |
a0d0e21e | 3259 | |
7e2040f0 | 3260 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3261 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3262 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3263 | sizeof PL_tokenbuf - 1, FALSE); | |
3264 | if (PL_expect == XOPERATOR) | |
3265 | no_op("Array length", s); | |
3280af22 | 3266 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3267 | PREREF(DOLSHARP); |
3280af22 NIS |
3268 | PL_expect = XOPERATOR; |
3269 | PL_pending_ident = '#'; | |
463ee0b2 | 3270 | TOKEN(DOLSHARP); |
79072805 | 3271 | } |
bbce6d69 | 3272 | |
3280af22 | 3273 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3274 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3275 | sizeof PL_tokenbuf - 1, FALSE); | |
3276 | if (PL_expect == XOPERATOR) | |
3277 | no_op("Scalar", s); | |
3280af22 NIS |
3278 | if (!PL_tokenbuf[1]) { |
3279 | if (s == PL_bufend) | |
bbce6d69 | 3280 | yyerror("Final $ should be \\$ or $name"); |
3281 | PREREF('$'); | |
8990e307 | 3282 | } |
a0d0e21e | 3283 | |
bbce6d69 | 3284 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3285 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3286 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3287 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3288 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3289 | TERM(THING); | |
3290 | } | |
3291 | ||
ff68c719 | 3292 | d = s; |
69d2bceb | 3293 | tmp = (I32)*s; |
3280af22 | 3294 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3295 | s = skipspace(s); |
3296 | ||
3280af22 | 3297 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3298 | char *t; |
3299 | if (*s == '[') { | |
3280af22 | 3300 | PL_tokenbuf[0] = '@'; |
599cee73 | 3301 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3302 | for(t = s + 1; |
7e2040f0 | 3303 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3304 | t++) ; |
a0d0e21e | 3305 | if (*t++ == ',') { |
3280af22 NIS |
3306 | PL_bufptr = skipspace(PL_bufptr); |
3307 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3308 | t++; |
cea2e8a9 | 3309 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3310 | "Multidimensional syntax %.*s not supported", |
3311 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3312 | } |
3313 | } | |
bbce6d69 | 3314 | } |
3315 | else if (*s == '{') { | |
3280af22 | 3316 | PL_tokenbuf[0] = '%'; |
599cee73 | 3317 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3318 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3319 | { | |
3280af22 | 3320 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3321 | STRLEN len; |
3322 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3323 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3324 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3325 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3326 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3327 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3328 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3329 | } |
93a17b20 LW |
3330 | } |
3331 | } | |
2f3197b3 | 3332 | } |
bbce6d69 | 3333 | |
3280af22 | 3334 | PL_expect = XOPERATOR; |
69d2bceb | 3335 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3336 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3337 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3338 | PL_expect = XOPERATOR; | |
bbce6d69 | 3339 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3340 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3341 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3342 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3343 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3344 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3345 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3346 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3347 | /* binary operators exclude handle interpretations */ |
3348 | switch (tmp) { | |
3349 | case -KEY_x: | |
3350 | case -KEY_eq: | |
3351 | case -KEY_ne: | |
3352 | case -KEY_gt: | |
3353 | case -KEY_lt: | |
3354 | case -KEY_ge: | |
3355 | case -KEY_le: | |
3356 | case -KEY_cmp: | |
3357 | break; | |
3358 | default: | |
3280af22 | 3359 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3360 | break; |
3361 | } | |
3362 | } | |
68dc0745 | 3363 | else { |
3364 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3365 | if (gv && GvCVu(gv)) | |
3280af22 | 3366 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3367 | } |
93a17b20 | 3368 | } |
bbce6d69 | 3369 | else if (isDIGIT(*s)) |
3280af22 | 3370 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3371 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3372 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3373 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3374 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3375 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3376 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3377 | } |
3280af22 | 3378 | PL_pending_ident = '$'; |
79072805 | 3379 | TOKEN('$'); |
378cc40b LW |
3380 | |
3381 | case '@': | |
3280af22 | 3382 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3383 | no_op("Array", s); |
3280af22 NIS |
3384 | PL_tokenbuf[0] = '@'; |
3385 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3386 | if (!PL_tokenbuf[1]) { | |
3387 | if (s == PL_bufend) | |
bbce6d69 | 3388 | yyerror("Final @ should be \\@ or @name"); |
3389 | PREREF('@'); | |
3390 | } | |
3280af22 | 3391 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3392 | s = skipspace(s); |
3280af22 | 3393 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3394 | if (*s == '{') |
3280af22 | 3395 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3396 | |
3397 | /* Warn about @ where they meant $. */ | |
599cee73 | 3398 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3399 | if (*s == '[' || *s == '{') { |
3400 | char *t = s + 1; | |
7e2040f0 | 3401 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3402 | t++; |
3403 | if (*t == '}' || *t == ']') { | |
3404 | t++; | |
3280af22 | 3405 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3406 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3407 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3408 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3409 | } |
93a17b20 LW |
3410 | } |
3411 | } | |
463ee0b2 | 3412 | } |
3280af22 | 3413 | PL_pending_ident = '@'; |
79072805 | 3414 | TERM('@'); |
378cc40b LW |
3415 | |
3416 | case '/': /* may either be division or pattern */ | |
3417 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3418 | if (PL_expect != XOPERATOR) { |
c277df42 | 3419 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3420 | if (PL_oldoldbufptr == PL_last_uni |
3421 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3422 | || memNE(PL_last_uni, "study", 5) |
3423 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3424 | check_uni(); |
8782bef2 | 3425 | s = scan_pat(s,OP_MATCH); |
79072805 | 3426 | TERM(sublex_start()); |
378cc40b LW |
3427 | } |
3428 | tmp = *s++; | |
a687059c | 3429 | if (tmp == '/') |
79072805 | 3430 | Mop(OP_DIVIDE); |
378cc40b LW |
3431 | OPERATOR(tmp); |
3432 | ||
3433 | case '.': | |
51882d45 GS |
3434 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3435 | #ifdef PERL_STRICT_CR | |
3436 | && s[1] == '\n' | |
3437 | #else | |
3438 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3439 | #endif | |
3440 | && (s == PL_linestart || s[-1] == '\n') ) | |
3441 | { | |
3280af22 NIS |
3442 | PL_lex_formbrack = 0; |
3443 | PL_expect = XSTATE; | |
79072805 LW |
3444 | goto rightbracket; |
3445 | } | |
3280af22 | 3446 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3447 | tmp = *s++; |
a687059c LW |
3448 | if (*s == tmp) { |
3449 | s++; | |
2f3197b3 LW |
3450 | if (*s == tmp) { |
3451 | s++; | |
79072805 | 3452 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3453 | } |
3454 | else | |
79072805 | 3455 | yylval.ival = 0; |
378cc40b | 3456 | OPERATOR(DOTDOT); |
a687059c | 3457 | } |
3280af22 | 3458 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3459 | check_uni(); |
79072805 | 3460 | Aop(OP_CONCAT); |
378cc40b LW |
3461 | } |
3462 | /* FALL THROUGH */ | |
3463 | case '0': case '1': case '2': case '3': case '4': | |
3464 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3465 | s = scan_num(s); |
3280af22 | 3466 | if (PL_expect == XOPERATOR) |
8990e307 | 3467 | no_op("Number",s); |
79072805 LW |
3468 | TERM(THING); |
3469 | ||
3470 | case '\'': | |
09bef843 | 3471 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3472 | if (PL_expect == XOPERATOR) { |
3473 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3474 | PL_expect = XTERM; | |
a0d0e21e LW |
3475 | depcom(); |
3476 | return ','; /* grandfather non-comma-format format */ | |
3477 | } | |
463ee0b2 | 3478 | else |
8990e307 | 3479 | no_op("String",s); |
463ee0b2 | 3480 | } |
79072805 | 3481 | if (!s) |
85e6fe83 | 3482 | missingterm((char*)0); |
79072805 LW |
3483 | yylval.ival = OP_CONST; |
3484 | TERM(sublex_start()); | |
3485 | ||
3486 | case '"': | |
09bef843 | 3487 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3488 | if (PL_expect == XOPERATOR) { |
3489 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3490 | PL_expect = XTERM; | |
a0d0e21e LW |
3491 | depcom(); |
3492 | return ','; /* grandfather non-comma-format format */ | |
3493 | } | |
463ee0b2 | 3494 | else |
8990e307 | 3495 | no_op("String",s); |
463ee0b2 | 3496 | } |
79072805 | 3497 | if (!s) |
85e6fe83 | 3498 | missingterm((char*)0); |
4633a7c4 | 3499 | yylval.ival = OP_CONST; |
3280af22 | 3500 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3501 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3502 | yylval.ival = OP_STRINGIFY; |
3503 | break; | |
3504 | } | |
3505 | } | |
79072805 LW |
3506 | TERM(sublex_start()); |
3507 | ||
3508 | case '`': | |
09bef843 | 3509 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3510 | if (PL_expect == XOPERATOR) |
8990e307 | 3511 | no_op("Backticks",s); |
79072805 | 3512 | if (!s) |
85e6fe83 | 3513 | missingterm((char*)0); |
79072805 LW |
3514 | yylval.ival = OP_BACKTICK; |
3515 | set_csh(); | |
3516 | TERM(sublex_start()); | |
3517 | ||
3518 | case '\\': | |
3519 | s++; | |
599cee73 | 3520 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3521 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3522 | *s, *s); |
3280af22 | 3523 | if (PL_expect == XOPERATOR) |
8990e307 | 3524 | no_op("Backslash",s); |
79072805 LW |
3525 | OPERATOR(REFGEN); |
3526 | ||
a7cb1f99 | 3527 | case 'v': |
e526c9e6 | 3528 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3529 | char *start = s; |
3530 | start++; | |
3531 | start++; | |
dd629d5b | 3532 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3533 | start++; |
3534 | if (*start == '.' && isDIGIT(start[1])) { | |
3535 | s = scan_num(s); | |
3536 | TERM(THING); | |
3537 | } | |
e526c9e6 GS |
3538 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
3539 | else if (!isALPHA(*start) && (PL_expect == XTERM || PL_expect == XREF)) { | |
3540 | char c = *start; | |
3541 | GV *gv; | |
3542 | *start = '\0'; | |
3543 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3544 | *start = c; | |
3545 | if (!gv) { | |
3546 | s = scan_num(s); | |
3547 | TERM(THING); | |
3548 | } | |
3549 | } | |
a7cb1f99 GS |
3550 | } |
3551 | goto keylookup; | |
79072805 | 3552 | case 'x': |
3280af22 | 3553 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3554 | s++; |
3555 | Mop(OP_REPEAT); | |
2f3197b3 | 3556 | } |
79072805 LW |
3557 | goto keylookup; |
3558 | ||
378cc40b | 3559 | case '_': |
79072805 LW |
3560 | case 'a': case 'A': |
3561 | case 'b': case 'B': | |
3562 | case 'c': case 'C': | |
3563 | case 'd': case 'D': | |
3564 | case 'e': case 'E': | |
3565 | case 'f': case 'F': | |
3566 | case 'g': case 'G': | |
3567 | case 'h': case 'H': | |
3568 | case 'i': case 'I': | |
3569 | case 'j': case 'J': | |
3570 | case 'k': case 'K': | |
3571 | case 'l': case 'L': | |
3572 | case 'm': case 'M': | |
3573 | case 'n': case 'N': | |
3574 | case 'o': case 'O': | |
3575 | case 'p': case 'P': | |
3576 | case 'q': case 'Q': | |
3577 | case 'r': case 'R': | |
3578 | case 's': case 'S': | |
3579 | case 't': case 'T': | |
3580 | case 'u': case 'U': | |
a7cb1f99 | 3581 | case 'V': |
79072805 LW |
3582 | case 'w': case 'W': |
3583 | case 'X': | |
3584 | case 'y': case 'Y': | |
3585 | case 'z': case 'Z': | |
3586 | ||
49dc05e3 | 3587 | keylookup: { |
161b471a NIS |
3588 | gv = Nullgv; |
3589 | gvp = 0; | |
49dc05e3 | 3590 | |
3280af22 NIS |
3591 | PL_bufptr = s; |
3592 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3593 | |
3594 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3595 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3596 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3597 | (PL_tokenbuf[0] == 'q' && | |
3598 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3599 | |
3600 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3601 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3602 | goto just_a_word; |
3603 | ||
3643fb5f | 3604 | d = s; |
3280af22 | 3605 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3606 | d++; /* no comments skipped here, or s### is misparsed */ |
3607 | ||
3608 | /* Is this a label? */ | |
3280af22 NIS |
3609 | if (!tmp && PL_expect == XSTATE |
3610 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3611 | s = d + 1; |
3280af22 | 3612 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3613 | CLINE; |
3614 | TOKEN(LABEL); | |
3643fb5f CS |
3615 | } |
3616 | ||
3617 | /* Check for keywords */ | |
3280af22 | 3618 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3619 | |
3620 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3621 | if (strnEQ(d,"=>",2)) { |
3622 | CLINE; | |
3280af22 | 3623 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3624 | yylval.opval->op_private = OPpCONST_BARE; |
3625 | TERM(WORD); | |
3626 | } | |
3627 | ||
a0d0e21e | 3628 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3629 | GV *ogv = Nullgv; /* override (winner) */ |
3630 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3631 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3632 | CV *cv; |
3280af22 | 3633 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3634 | (cv = GvCVu(gv))) |
3635 | { | |
3636 | if (GvIMPORTED_CV(gv)) | |
3637 | ogv = gv; | |
3638 | else if (! CvMETHOD(cv)) | |
3639 | hgv = gv; | |
3640 | } | |
3641 | if (!ogv && | |
3280af22 NIS |
3642 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3643 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3644 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3645 | { | |
3646 | ogv = gv; | |
3647 | } | |
3648 | } | |
3649 | if (ogv) { | |
3650 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3651 | } |
3652 | else if (gv && !gvp | |
3653 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3654 | && GvCVu(gv) |
3280af22 | 3655 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3656 | { |
3657 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3658 | } |
56f7f34b CS |
3659 | else { /* no override */ |
3660 | tmp = -tmp; | |
3661 | gv = Nullgv; | |
3662 | gvp = 0; | |
4944e2f7 GS |
3663 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3664 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3665 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3666 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3667 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3668 | } |
a0d0e21e LW |
3669 | } |
3670 | ||
3671 | reserved_word: | |
3672 | switch (tmp) { | |
79072805 LW |
3673 | |
3674 | default: /* not a keyword */ | |
93a17b20 | 3675 | just_a_word: { |
96e4d5b1 | 3676 | SV *sv; |
3280af22 | 3677 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3678 | |
3679 | /* Get the rest if it looks like a package qualifier */ | |
3680 | ||
155aba94 | 3681 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 3682 | STRLEN morelen; |
3280af22 | 3683 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3684 | TRUE, &morelen); |
3685 | if (!morelen) | |
cea2e8a9 | 3686 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3687 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3688 | len += morelen; |
a0d0e21e | 3689 | } |
8990e307 | 3690 | |
3280af22 NIS |
3691 | if (PL_expect == XOPERATOR) { |
3692 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3693 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3694 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3695 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3696 | } |
3697 | else | |
54310121 | 3698 | no_op("Bareword",s); |
463ee0b2 | 3699 | } |
8990e307 | 3700 | |
c3e0f903 GS |
3701 | /* Look for a subroutine with this name in current package, |
3702 | unless name is "Foo::", in which case Foo is a bearword | |
3703 | (and a package name). */ | |
3704 | ||
3705 | if (len > 2 && | |
3280af22 | 3706 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3707 | { |
e476b1b5 GS |
3708 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3709 | Perl_warner(aTHX_ WARN_BAREWORD, | |
599cee73 | 3710 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3711 | PL_tokenbuf); |
c3e0f903 | 3712 | len -= 2; |
3280af22 | 3713 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3714 | gv = Nullgv; |
3715 | gvp = 0; | |
3716 | } | |
3717 | else { | |
3718 | len = 0; | |
3719 | if (!gv) | |
3280af22 | 3720 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3721 | } |
3722 | ||
3723 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3724 | |
49dc05e3 | 3725 | if (gvp) { |
79cb57f6 | 3726 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3727 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3728 | } |
3729 | else | |
3280af22 | 3730 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3731 | |
a0d0e21e LW |
3732 | /* Presume this is going to be a bareword of some sort. */ |
3733 | ||
3734 | CLINE; | |
49dc05e3 | 3735 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3736 | yylval.opval->op_private = OPpCONST_BARE; |
3737 | ||
c3e0f903 GS |
3738 | /* And if "Foo::", then that's what it certainly is. */ |
3739 | ||
3740 | if (len) | |
3741 | goto safe_bareword; | |
3742 | ||
8990e307 LW |
3743 | /* See if it's the indirect object for a list operator. */ |
3744 | ||
3280af22 NIS |
3745 | if (PL_oldoldbufptr && |
3746 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3747 | (PL_oldoldbufptr == PL_last_lop |
3748 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3749 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3750 | (PL_expect == XREF || |
3751 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3752 | { |
748a9306 LW |
3753 | bool immediate_paren = *s == '('; |
3754 | ||
a0d0e21e LW |
3755 | /* (Now we can afford to cross potential line boundary.) */ |
3756 | s = skipspace(s); | |
3757 | ||
3758 | /* Two barewords in a row may indicate method call. */ | |
3759 | ||
7e2040f0 | 3760 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3761 | return tmp; |
3762 | ||
3763 | /* If not a declared subroutine, it's an indirect object. */ | |
3764 | /* (But it's an indir obj regardless for sort.) */ | |
3765 | ||
3280af22 | 3766 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3767 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3768 | (PL_last_lop_op != OP_MAPSTART && | |
3769 | PL_last_lop_op != OP_GREPSTART)) | |
3770 | { | |
3280af22 | 3771 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3772 | goto bareword; |
93a17b20 LW |
3773 | } |
3774 | } | |
8990e307 LW |
3775 | |
3776 | /* If followed by a paren, it's certainly a subroutine. */ | |
3777 | ||
3280af22 | 3778 | PL_expect = XOPERATOR; |
8990e307 | 3779 | s = skipspace(s); |
93a17b20 | 3780 | if (*s == '(') { |
79072805 | 3781 | CLINE; |
96e4d5b1 | 3782 | if (gv && GvCVu(gv)) { |
3783 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3784 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3785 | s = d + 1; |
3786 | goto its_constant; | |
3787 | } | |
3788 | } | |
3280af22 NIS |
3789 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3790 | PL_expect = XOPERATOR; | |
93a17b20 | 3791 | force_next(WORD); |
c07a80fd | 3792 | yylval.ival = 0; |
463ee0b2 | 3793 | TOKEN('&'); |
79072805 | 3794 | } |
93a17b20 | 3795 | |
a0d0e21e | 3796 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3797 | |
8ebc5c01 | 3798 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3799 | PL_last_lop = PL_oldbufptr; |
3800 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3801 | PREBLOCK(METHOD); |
463ee0b2 LW |
3802 | } |
3803 | ||
8990e307 LW |
3804 | /* If followed by a bareword, see if it looks like indir obj. */ |
3805 | ||
7e2040f0 | 3806 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3807 | return tmp; |
93a17b20 | 3808 | |
8990e307 LW |
3809 | /* Not a method, so call it a subroutine (if defined) */ |
3810 | ||
8ebc5c01 | 3811 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3812 | CV* cv; |
0453d815 PM |
3813 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3814 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3815 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3816 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3817 | /* Check for a constant sub */ |
46fc3d4c | 3818 | cv = GvCV(gv); |
96e4d5b1 | 3819 | if ((sv = cv_const_sv(cv))) { |
3820 | its_constant: | |
3821 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3822 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3823 | yylval.opval->op_private = 0; | |
3824 | TOKEN(WORD); | |
89bfa8cd | 3825 | } |
3826 | ||
a5f75d66 AD |
3827 | /* Resolve to GV now. */ |
3828 | op_free(yylval.opval); | |
3829 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3830 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3831 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3832 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3833 | /* Is there a prototype? */ |
3834 | if (SvPOK(cv)) { | |
3835 | STRLEN len; | |
7a52d87a | 3836 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3837 | if (!len) |
3838 | TERM(FUNC0SUB); | |
7a52d87a | 3839 | if (strEQ(proto, "$")) |
4633a7c4 | 3840 | OPERATOR(UNIOPSUB); |
7a52d87a | 3841 | if (*proto == '&' && *s == '{') { |
3280af22 | 3842 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3843 | PREBLOCK(LSTOPSUB); |
3844 | } | |
a9ef352a | 3845 | } |
3280af22 NIS |
3846 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3847 | PL_expect = XTERM; | |
8990e307 LW |
3848 | force_next(WORD); |
3849 | TOKEN(NOAMP); | |
3850 | } | |
748a9306 | 3851 | |
8990e307 LW |
3852 | /* Call it a bare word */ |
3853 | ||
5603f27d GS |
3854 | if (PL_hints & HINT_STRICT_SUBS) |
3855 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3856 | else { | |
3857 | bareword: | |
3858 | if (ckWARN(WARN_RESERVED)) { | |
3859 | if (lastchar != '-') { | |
3860 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3861 | if (!*d) | |
cea2e8a9 | 3862 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3863 | PL_tokenbuf); |
3864 | } | |
748a9306 LW |
3865 | } |
3866 | } | |
c3e0f903 GS |
3867 | |
3868 | safe_bareword: | |
f248d071 | 3869 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3870 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3871 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3872 | lastchar, PL_tokenbuf); |
0453d815 PM |
3873 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3874 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3875 | lastchar, lastchar); |
3876 | } | |
93a17b20 | 3877 | TOKEN(WORD); |
79072805 | 3878 | } |
79072805 | 3879 | |
68dc0745 | 3880 | case KEY___FILE__: |
46fc3d4c | 3881 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3882 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3883 | TERM(THING); |
3884 | ||
79072805 | 3885 | case KEY___LINE__: |
cf2093f6 | 3886 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3887 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3888 | TERM(THING); |
68dc0745 | 3889 | |
3890 | case KEY___PACKAGE__: | |
3891 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3892 | (PL_curstash |
3893 | ? newSVsv(PL_curstname) | |
3894 | : &PL_sv_undef)); | |
79072805 | 3895 | TERM(THING); |
79072805 | 3896 | |
e50aee73 | 3897 | case KEY___DATA__: |
79072805 LW |
3898 | case KEY___END__: { |
3899 | GV *gv; | |
79072805 LW |
3900 | |
3901 | /*SUPPRESS 560*/ | |
3280af22 | 3902 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3903 | char *pname = "main"; |
3280af22 NIS |
3904 | if (PL_tokenbuf[2] == 'D') |
3905 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3906 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3907 | GvMULTI_on(gv); |
79072805 | 3908 | if (!GvIO(gv)) |
a0d0e21e | 3909 | GvIOp(gv) = newIO(); |
3280af22 | 3910 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3911 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3912 | { | |
3280af22 | 3913 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3914 | fcntl(fd,F_SETFD,fd >= 3); |
3915 | } | |
79072805 | 3916 | #endif |
fd049845 | 3917 | /* Mark this internal pseudo-handle as clean */ |
3918 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3919 | if (PL_preprocess) |
a0d0e21e | 3920 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3921 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3922 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3923 | else |
a0d0e21e | 3924 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3925 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3926 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 3927 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 3928 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
3929 | if (PL_bufend-PL_bufptr > 2 |
3930 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
3931 | { |
3932 | Off_t loc = 0; | |
3933 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3934 | loc = PerlIO_tell(PL_rsfp); | |
3935 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3936 | } | |
3937 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3938 | #if defined(__BORLANDC__) | |
3939 | /* XXX see note in do_binmode() */ | |
3940 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3941 | #endif | |
3942 | if (loc > 0) | |
3943 | PerlIO_seek(PL_rsfp, loc, 0); | |
3944 | } | |
3945 | } | |
3946 | #endif | |
3280af22 | 3947 | PL_rsfp = Nullfp; |
79072805 LW |
3948 | } |
3949 | goto fake_eof; | |
e929a76b | 3950 | } |
de3bb511 | 3951 | |
8990e307 | 3952 | case KEY_AUTOLOAD: |
ed6116ce | 3953 | case KEY_DESTROY: |
79072805 | 3954 | case KEY_BEGIN: |
7d30b5c4 | 3955 | case KEY_CHECK: |
7d07dbc2 | 3956 | case KEY_INIT: |
7d30b5c4 | 3957 | case KEY_END: |
3280af22 NIS |
3958 | if (PL_expect == XSTATE) { |
3959 | s = PL_bufptr; | |
93a17b20 | 3960 | goto really_sub; |
79072805 LW |
3961 | } |
3962 | goto just_a_word; | |
3963 | ||
a0d0e21e LW |
3964 | case KEY_CORE: |
3965 | if (*s == ':' && s[1] == ':') { | |
3966 | s += 2; | |
748a9306 | 3967 | d = s; |
3280af22 | 3968 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
3969 | if (!(tmp = keyword(PL_tokenbuf, len))) |
3970 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
3971 | if (tmp < 0) |
3972 | tmp = -tmp; | |
3973 | goto reserved_word; | |
3974 | } | |
3975 | goto just_a_word; | |
3976 | ||
463ee0b2 LW |
3977 | case KEY_abs: |
3978 | UNI(OP_ABS); | |
3979 | ||
79072805 LW |
3980 | case KEY_alarm: |
3981 | UNI(OP_ALARM); | |
3982 | ||
3983 | case KEY_accept: | |
a0d0e21e | 3984 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3985 | |
463ee0b2 LW |
3986 | case KEY_and: |
3987 | OPERATOR(ANDOP); | |
3988 | ||
79072805 | 3989 | case KEY_atan2: |
a0d0e21e | 3990 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3991 | |
79072805 | 3992 | case KEY_bind: |
a0d0e21e | 3993 | LOP(OP_BIND,XTERM); |
79072805 LW |
3994 | |
3995 | case KEY_binmode: | |
1c1fc3ea | 3996 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
3997 | |
3998 | case KEY_bless: | |
a0d0e21e | 3999 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4000 | |
4001 | case KEY_chop: | |
4002 | UNI(OP_CHOP); | |
4003 | ||
4004 | case KEY_continue: | |
4005 | PREBLOCK(CONTINUE); | |
4006 | ||
4007 | case KEY_chdir: | |
85e6fe83 | 4008 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4009 | UNI(OP_CHDIR); |
4010 | ||
4011 | case KEY_close: | |
4012 | UNI(OP_CLOSE); | |
4013 | ||
4014 | case KEY_closedir: | |
4015 | UNI(OP_CLOSEDIR); | |
4016 | ||
4017 | case KEY_cmp: | |
4018 | Eop(OP_SCMP); | |
4019 | ||
4020 | case KEY_caller: | |
4021 | UNI(OP_CALLER); | |
4022 | ||
4023 | case KEY_crypt: | |
4024 | #ifdef FCRYPT | |
f4c556ac GS |
4025 | if (!PL_cryptseen) { |
4026 | PL_cryptseen = TRUE; | |
de3bb511 | 4027 | init_des(); |
f4c556ac | 4028 | } |
a687059c | 4029 | #endif |
a0d0e21e | 4030 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4031 | |
4032 | case KEY_chmod: | |
e476b1b5 | 4033 | if (ckWARN(WARN_CHMOD)) { |
3280af22 | 4034 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 4035 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4036 | Perl_warner(aTHX_ WARN_CHMOD, |
5a211162 | 4037 | "chmod() mode argument is missing initial 0"); |
748a9306 | 4038 | } |
a0d0e21e | 4039 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4040 | |
4041 | case KEY_chown: | |
a0d0e21e | 4042 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4043 | |
4044 | case KEY_connect: | |
a0d0e21e | 4045 | LOP(OP_CONNECT,XTERM); |
79072805 | 4046 | |
463ee0b2 LW |
4047 | case KEY_chr: |
4048 | UNI(OP_CHR); | |
4049 | ||
79072805 LW |
4050 | case KEY_cos: |
4051 | UNI(OP_COS); | |
4052 | ||
4053 | case KEY_chroot: | |
4054 | UNI(OP_CHROOT); | |
4055 | ||
4056 | case KEY_do: | |
4057 | s = skipspace(s); | |
4058 | if (*s == '{') | |
a0d0e21e | 4059 | PRETERMBLOCK(DO); |
79072805 | 4060 | if (*s != '\'') |
a0d0e21e | 4061 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 4062 | OPERATOR(DO); |
79072805 LW |
4063 | |
4064 | case KEY_die: | |
3280af22 | 4065 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4066 | LOP(OP_DIE,XTERM); |
79072805 LW |
4067 | |
4068 | case KEY_defined: | |
4069 | UNI(OP_DEFINED); | |
4070 | ||
4071 | case KEY_delete: | |
a0d0e21e | 4072 | UNI(OP_DELETE); |
79072805 LW |
4073 | |
4074 | case KEY_dbmopen: | |
a0d0e21e LW |
4075 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4076 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4077 | |
4078 | case KEY_dbmclose: | |
4079 | UNI(OP_DBMCLOSE); | |
4080 | ||
4081 | case KEY_dump: | |
a0d0e21e | 4082 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4083 | LOOPX(OP_DUMP); |
4084 | ||
4085 | case KEY_else: | |
4086 | PREBLOCK(ELSE); | |
4087 | ||
4088 | case KEY_elsif: | |
57843af0 | 4089 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4090 | OPERATOR(ELSIF); |
4091 | ||
4092 | case KEY_eq: | |
4093 | Eop(OP_SEQ); | |
4094 | ||
a0d0e21e LW |
4095 | case KEY_exists: |
4096 | UNI(OP_EXISTS); | |
4097 | ||
79072805 LW |
4098 | case KEY_exit: |
4099 | UNI(OP_EXIT); | |
4100 | ||
4101 | case KEY_eval: | |
79072805 | 4102 | s = skipspace(s); |
3280af22 | 4103 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4104 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4105 | |
4106 | case KEY_eof: | |
4107 | UNI(OP_EOF); | |
4108 | ||
4109 | case KEY_exp: | |
4110 | UNI(OP_EXP); | |
4111 | ||
4112 | case KEY_each: | |
4113 | UNI(OP_EACH); | |
4114 | ||
4115 | case KEY_exec: | |
4116 | set_csh(); | |
a0d0e21e | 4117 | LOP(OP_EXEC,XREF); |
79072805 LW |
4118 | |
4119 | case KEY_endhostent: | |
4120 | FUN0(OP_EHOSTENT); | |
4121 | ||
4122 | case KEY_endnetent: | |
4123 | FUN0(OP_ENETENT); | |
4124 | ||
4125 | case KEY_endservent: | |
4126 | FUN0(OP_ESERVENT); | |
4127 | ||
4128 | case KEY_endprotoent: | |
4129 | FUN0(OP_EPROTOENT); | |
4130 | ||
4131 | case KEY_endpwent: | |
4132 | FUN0(OP_EPWENT); | |
4133 | ||
4134 | case KEY_endgrent: | |
4135 | FUN0(OP_EGRENT); | |
4136 | ||
4137 | case KEY_for: | |
4138 | case KEY_foreach: | |
57843af0 | 4139 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4140 | s = skipspace(s); |
7e2040f0 | 4141 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4142 | char *p = s; |
3280af22 | 4143 | if ((PL_bufend - p) >= 3 && |
55497cff | 4144 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4145 | p += 2; | |
77ca0c92 LW |
4146 | else if ((PL_bufend - p) >= 4 && |
4147 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4148 | p += 3; | |
55497cff | 4149 | p = skipspace(p); |
7e2040f0 | 4150 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4151 | p = scan_ident(p, PL_bufend, |
4152 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4153 | p = skipspace(p); | |
4154 | } | |
4155 | if (*p != '$') | |
cea2e8a9 | 4156 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4157 | } |
79072805 LW |
4158 | OPERATOR(FOR); |
4159 | ||
4160 | case KEY_formline: | |
a0d0e21e | 4161 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4162 | |
4163 | case KEY_fork: | |
4164 | FUN0(OP_FORK); | |
4165 | ||
4166 | case KEY_fcntl: | |
a0d0e21e | 4167 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4168 | |
4169 | case KEY_fileno: | |
4170 | UNI(OP_FILENO); | |
4171 | ||
4172 | case KEY_flock: | |
a0d0e21e | 4173 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4174 | |
4175 | case KEY_gt: | |
4176 | Rop(OP_SGT); | |
4177 | ||
4178 | case KEY_ge: | |
4179 | Rop(OP_SGE); | |
4180 | ||
4181 | case KEY_grep: | |
2c38e13d | 4182 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4183 | |
4184 | case KEY_goto: | |
a0d0e21e | 4185 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4186 | LOOPX(OP_GOTO); |
4187 | ||
4188 | case KEY_gmtime: | |
4189 | UNI(OP_GMTIME); | |
4190 | ||
4191 | case KEY_getc: | |
4192 | UNI(OP_GETC); | |
4193 | ||
4194 | case KEY_getppid: | |
4195 | FUN0(OP_GETPPID); | |
4196 | ||
4197 | case KEY_getpgrp: | |
4198 | UNI(OP_GETPGRP); | |
4199 | ||
4200 | case KEY_getpriority: | |
a0d0e21e | 4201 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4202 | |
4203 | case KEY_getprotobyname: | |
4204 | UNI(OP_GPBYNAME); | |
4205 | ||
4206 | case KEY_getprotobynumber: | |
a0d0e21e | 4207 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4208 | |
4209 | case KEY_getprotoent: | |
4210 | FUN0(OP_GPROTOENT); | |
4211 | ||
4212 | case KEY_getpwent: | |
4213 | FUN0(OP_GPWENT); | |
4214 | ||
4215 | case KEY_getpwnam: | |
ff68c719 | 4216 | UNI(OP_GPWNAM); |
79072805 LW |
4217 | |
4218 | case KEY_getpwuid: | |
ff68c719 | 4219 | UNI(OP_GPWUID); |
79072805 LW |
4220 | |
4221 | case KEY_getpeername: | |
4222 | UNI(OP_GETPEERNAME); | |
4223 | ||
4224 | case KEY_gethostbyname: | |
4225 | UNI(OP_GHBYNAME); | |
4226 | ||
4227 | case KEY_gethostbyaddr: | |
a0d0e21e | 4228 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4229 | |
4230 | case KEY_gethostent: | |
4231 | FUN0(OP_GHOSTENT); | |
4232 | ||
4233 | case KEY_getnetbyname: | |
4234 | UNI(OP_GNBYNAME); | |
4235 | ||
4236 | case KEY_getnetbyaddr: | |
a0d0e21e | 4237 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4238 | |
4239 | case KEY_getnetent: | |
4240 | FUN0(OP_GNETENT); | |
4241 | ||
4242 | case KEY_getservbyname: | |
a0d0e21e | 4243 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4244 | |
4245 | case KEY_getservbyport: | |
a0d0e21e | 4246 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4247 | |
4248 | case KEY_getservent: | |
4249 | FUN0(OP_GSERVENT); | |
4250 | ||
4251 | case KEY_getsockname: | |
4252 | UNI(OP_GETSOCKNAME); | |
4253 | ||
4254 | case KEY_getsockopt: | |
a0d0e21e | 4255 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4256 | |
4257 | case KEY_getgrent: | |
4258 | FUN0(OP_GGRENT); | |
4259 | ||
4260 | case KEY_getgrnam: | |
ff68c719 | 4261 | UNI(OP_GGRNAM); |
79072805 LW |
4262 | |
4263 | case KEY_getgrgid: | |
ff68c719 | 4264 | UNI(OP_GGRGID); |
79072805 LW |
4265 | |
4266 | case KEY_getlogin: | |
4267 | FUN0(OP_GETLOGIN); | |
4268 | ||
93a17b20 | 4269 | case KEY_glob: |
a0d0e21e LW |
4270 | set_csh(); |
4271 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4272 | |
79072805 LW |
4273 | case KEY_hex: |
4274 | UNI(OP_HEX); | |
4275 | ||
4276 | case KEY_if: | |
57843af0 | 4277 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4278 | OPERATOR(IF); |
4279 | ||
4280 | case KEY_index: | |
a0d0e21e | 4281 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4282 | |
4283 | case KEY_int: | |
4284 | UNI(OP_INT); | |
4285 | ||
4286 | case KEY_ioctl: | |
a0d0e21e | 4287 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4288 | |
4289 | case KEY_join: | |
a0d0e21e | 4290 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4291 | |
4292 | case KEY_keys: | |
4293 | UNI(OP_KEYS); | |
4294 | ||
4295 | case KEY_kill: | |
a0d0e21e | 4296 | LOP(OP_KILL,XTERM); |
79072805 LW |
4297 | |
4298 | case KEY_last: | |
a0d0e21e | 4299 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4300 | LOOPX(OP_LAST); |
a0d0e21e | 4301 | |
79072805 LW |
4302 | case KEY_lc: |
4303 | UNI(OP_LC); | |
4304 | ||
4305 | case KEY_lcfirst: | |
4306 | UNI(OP_LCFIRST); | |
4307 | ||
4308 | case KEY_local: | |
09bef843 | 4309 | yylval.ival = 0; |
79072805 LW |
4310 | OPERATOR(LOCAL); |
4311 | ||
4312 | case KEY_length: | |
4313 | UNI(OP_LENGTH); | |
4314 | ||
4315 | case KEY_lt: | |
4316 | Rop(OP_SLT); | |
4317 | ||
4318 | case KEY_le: | |
4319 | Rop(OP_SLE); | |
4320 | ||
4321 | case KEY_localtime: | |
4322 | UNI(OP_LOCALTIME); | |
4323 | ||
4324 | case KEY_log: | |
4325 | UNI(OP_LOG); | |
4326 | ||
4327 | case KEY_link: | |
a0d0e21e | 4328 | LOP(OP_LINK,XTERM); |
79072805 LW |
4329 | |
4330 | case KEY_listen: | |
a0d0e21e | 4331 | LOP(OP_LISTEN,XTERM); |
79072805 | 4332 | |
c0329465 MB |
4333 | case KEY_lock: |
4334 | UNI(OP_LOCK); | |
4335 | ||
79072805 LW |
4336 | case KEY_lstat: |
4337 | UNI(OP_LSTAT); | |
4338 | ||
4339 | case KEY_m: | |
8782bef2 | 4340 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4341 | TERM(sublex_start()); |
4342 | ||
a0d0e21e | 4343 | case KEY_map: |
2c38e13d | 4344 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4345 | |
79072805 | 4346 | case KEY_mkdir: |
a0d0e21e | 4347 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4348 | |
4349 | case KEY_msgctl: | |
a0d0e21e | 4350 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4351 | |
4352 | case KEY_msgget: | |
a0d0e21e | 4353 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4354 | |
4355 | case KEY_msgrcv: | |
a0d0e21e | 4356 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4357 | |
4358 | case KEY_msgsnd: | |
a0d0e21e | 4359 | LOP(OP_MSGSND,XTERM); |
79072805 | 4360 | |
77ca0c92 | 4361 | case KEY_our: |
93a17b20 | 4362 | case KEY_my: |
77ca0c92 | 4363 | PL_in_my = tmp; |
c750a3ec | 4364 | s = skipspace(s); |
7e2040f0 | 4365 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4366 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4367 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4368 | goto really_sub; | |
3280af22 NIS |
4369 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4370 | if (!PL_in_my_stash) { | |
c750a3ec | 4371 | char tmpbuf[1024]; |
3280af22 NIS |
4372 | PL_bufptr = s; |
4373 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4374 | yyerror(tmpbuf); |
4375 | } | |
4376 | } | |
09bef843 | 4377 | yylval.ival = 1; |
55497cff | 4378 | OPERATOR(MY); |
93a17b20 | 4379 | |
79072805 | 4380 | case KEY_next: |
a0d0e21e | 4381 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4382 | LOOPX(OP_NEXT); |
4383 | ||
4384 | case KEY_ne: | |
4385 | Eop(OP_SNE); | |
4386 | ||
a0d0e21e | 4387 | case KEY_no: |
3280af22 | 4388 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4389 | yyerror("\"no\" not allowed in expression"); |
4390 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4391 | s = force_version(s); |
a0d0e21e LW |
4392 | yylval.ival = 0; |
4393 | OPERATOR(USE); | |
4394 | ||
4395 | case KEY_not: | |
2d2e263d LW |
4396 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4397 | FUN1(OP_NOT); | |
4398 | else | |
4399 | OPERATOR(NOTOP); | |
a0d0e21e | 4400 | |
79072805 | 4401 | case KEY_open: |
93a17b20 | 4402 | s = skipspace(s); |
7e2040f0 | 4403 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4404 | char *t; |
7e2040f0 | 4405 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4406 | t = skipspace(d); |
e476b1b5 GS |
4407 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)) |
4408 | Perl_warner(aTHX_ WARN_PRECEDENCE, | |
0453d815 PM |
4409 | "Precedence problem: open %.*s should be open(%.*s)", |
4410 | d-s,s, d-s,s); | |
93a17b20 | 4411 | } |
a0d0e21e | 4412 | LOP(OP_OPEN,XTERM); |
79072805 | 4413 | |
463ee0b2 | 4414 | case KEY_or: |
a0d0e21e | 4415 | yylval.ival = OP_OR; |
463ee0b2 LW |
4416 | OPERATOR(OROP); |
4417 | ||
79072805 LW |
4418 | case KEY_ord: |
4419 | UNI(OP_ORD); | |
4420 | ||
4421 | case KEY_oct: | |
4422 | UNI(OP_OCT); | |
4423 | ||
4424 | case KEY_opendir: | |
a0d0e21e | 4425 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4426 | |
4427 | case KEY_print: | |
3280af22 | 4428 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4429 | LOP(OP_PRINT,XREF); |
79072805 LW |
4430 | |
4431 | case KEY_printf: | |
3280af22 | 4432 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4433 | LOP(OP_PRTF,XREF); |
79072805 | 4434 | |
c07a80fd | 4435 | case KEY_prototype: |
4436 | UNI(OP_PROTOTYPE); | |
4437 | ||
79072805 | 4438 | case KEY_push: |
a0d0e21e | 4439 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4440 | |
4441 | case KEY_pop: | |
4442 | UNI(OP_POP); | |
4443 | ||
a0d0e21e LW |
4444 | case KEY_pos: |
4445 | UNI(OP_POS); | |
4446 | ||
79072805 | 4447 | case KEY_pack: |
a0d0e21e | 4448 | LOP(OP_PACK,XTERM); |
79072805 LW |
4449 | |
4450 | case KEY_package: | |
a0d0e21e | 4451 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4452 | OPERATOR(PACKAGE); |
4453 | ||
4454 | case KEY_pipe: | |
a0d0e21e | 4455 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4456 | |
4457 | case KEY_q: | |
09bef843 | 4458 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4459 | if (!s) |
85e6fe83 | 4460 | missingterm((char*)0); |
79072805 LW |
4461 | yylval.ival = OP_CONST; |
4462 | TERM(sublex_start()); | |
4463 | ||
a0d0e21e LW |
4464 | case KEY_quotemeta: |
4465 | UNI(OP_QUOTEMETA); | |
4466 | ||
8990e307 | 4467 | case KEY_qw: |
09bef843 | 4468 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4469 | if (!s) |
85e6fe83 | 4470 | missingterm((char*)0); |
8127e0e3 GS |
4471 | force_next(')'); |
4472 | if (SvCUR(PL_lex_stuff)) { | |
4473 | OP *words = Nullop; | |
4474 | int warned = 0; | |
3280af22 | 4475 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4476 | while (len) { |
4477 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4478 | if (len) { | |
4479 | char *b = d; | |
e476b1b5 | 4480 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4481 | for (; !isSPACE(*d) && len; --len, ++d) { |
4482 | if (*d == ',') { | |
e476b1b5 | 4483 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4484 | "Possible attempt to separate words with commas"); |
4485 | ++warned; | |
4486 | } | |
4487 | else if (*d == '#') { | |
e476b1b5 | 4488 | Perl_warner(aTHX_ WARN_QW, |
8127e0e3 GS |
4489 | "Possible attempt to put comments in qw() list"); |
4490 | ++warned; | |
4491 | } | |
4492 | } | |
4493 | } | |
4494 | else { | |
4495 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4496 | } | |
4497 | words = append_elem(OP_LIST, words, | |
4498 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4499 | } |
4500 | } | |
8127e0e3 GS |
4501 | if (words) { |
4502 | PL_nextval[PL_nexttoke].opval = words; | |
4503 | force_next(THING); | |
4504 | } | |
55497cff | 4505 | } |
8127e0e3 GS |
4506 | if (PL_lex_stuff) |
4507 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4508 | PL_lex_stuff = Nullsv; |
3280af22 | 4509 | PL_expect = XTERM; |
8127e0e3 | 4510 | TOKEN('('); |
8990e307 | 4511 | |
79072805 | 4512 | case KEY_qq: |
09bef843 | 4513 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4514 | if (!s) |
85e6fe83 | 4515 | missingterm((char*)0); |
a0d0e21e | 4516 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4517 | if (SvIVX(PL_lex_stuff) == '\'') |
4518 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4519 | TERM(sublex_start()); |
4520 | ||
8782bef2 GB |
4521 | case KEY_qr: |
4522 | s = scan_pat(s,OP_QR); | |
4523 | TERM(sublex_start()); | |
4524 | ||
79072805 | 4525 | case KEY_qx: |
09bef843 | 4526 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4527 | if (!s) |
85e6fe83 | 4528 | missingterm((char*)0); |
79072805 LW |
4529 | yylval.ival = OP_BACKTICK; |
4530 | set_csh(); | |
4531 | TERM(sublex_start()); | |
4532 | ||
4533 | case KEY_return: | |
4534 | OLDLOP(OP_RETURN); | |
4535 | ||
4536 | case KEY_require: | |
a7cb1f99 GS |
4537 | s = skipspace(s); |
4538 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4539 | s = force_version(s); | |
4540 | } | |
4541 | else { | |
4542 | *PL_tokenbuf = '\0'; | |
4543 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4544 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4545 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4546 | else if (*s == '<') | |
4547 | yyerror("<> should be quotes"); | |
4548 | } | |
463ee0b2 | 4549 | UNI(OP_REQUIRE); |
79072805 LW |
4550 | |
4551 | case KEY_reset: | |
4552 | UNI(OP_RESET); | |
4553 | ||
4554 | case KEY_redo: | |
a0d0e21e | 4555 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4556 | LOOPX(OP_REDO); |
4557 | ||
4558 | case KEY_rename: | |
a0d0e21e | 4559 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4560 | |
4561 | case KEY_rand: | |
4562 | UNI(OP_RAND); | |
4563 | ||
4564 | case KEY_rmdir: | |
4565 | UNI(OP_RMDIR); | |
4566 | ||
4567 | case KEY_rindex: | |
a0d0e21e | 4568 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4569 | |
4570 | case KEY_read: | |
a0d0e21e | 4571 | LOP(OP_READ,XTERM); |
79072805 LW |
4572 | |
4573 | case KEY_readdir: | |
4574 | UNI(OP_READDIR); | |
4575 | ||
93a17b20 LW |
4576 | case KEY_readline: |
4577 | set_csh(); | |
4578 | UNI(OP_READLINE); | |
4579 | ||
4580 | case KEY_readpipe: | |
4581 | set_csh(); | |
4582 | UNI(OP_BACKTICK); | |
4583 | ||
79072805 LW |
4584 | case KEY_rewinddir: |
4585 | UNI(OP_REWINDDIR); | |
4586 | ||
4587 | case KEY_recv: | |
a0d0e21e | 4588 | LOP(OP_RECV,XTERM); |
79072805 LW |
4589 | |
4590 | case KEY_reverse: | |
a0d0e21e | 4591 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4592 | |
4593 | case KEY_readlink: | |
4594 | UNI(OP_READLINK); | |
4595 | ||
4596 | case KEY_ref: | |
4597 | UNI(OP_REF); | |
4598 | ||
4599 | case KEY_s: | |
4600 | s = scan_subst(s); | |
4601 | if (yylval.opval) | |
4602 | TERM(sublex_start()); | |
4603 | else | |
4604 | TOKEN(1); /* force error */ | |
4605 | ||
a0d0e21e LW |
4606 | case KEY_chomp: |
4607 | UNI(OP_CHOMP); | |
4608 | ||
79072805 LW |
4609 | case KEY_scalar: |
4610 | UNI(OP_SCALAR); | |
4611 | ||
4612 | case KEY_select: | |
a0d0e21e | 4613 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4614 | |
4615 | case KEY_seek: | |
a0d0e21e | 4616 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4617 | |
4618 | case KEY_semctl: | |
a0d0e21e | 4619 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4620 | |
4621 | case KEY_semget: | |
a0d0e21e | 4622 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4623 | |
4624 | case KEY_semop: | |
a0d0e21e | 4625 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4626 | |
4627 | case KEY_send: | |
a0d0e21e | 4628 | LOP(OP_SEND,XTERM); |
79072805 LW |
4629 | |
4630 | case KEY_setpgrp: | |
a0d0e21e | 4631 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4632 | |
4633 | case KEY_setpriority: | |
a0d0e21e | 4634 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4635 | |
4636 | case KEY_sethostent: | |
ff68c719 | 4637 | UNI(OP_SHOSTENT); |
79072805 LW |
4638 | |
4639 | case KEY_setnetent: | |
ff68c719 | 4640 | UNI(OP_SNETENT); |
79072805 LW |
4641 | |
4642 | case KEY_setservent: | |
ff68c719 | 4643 | UNI(OP_SSERVENT); |
79072805 LW |
4644 | |
4645 | case KEY_setprotoent: | |
ff68c719 | 4646 | UNI(OP_SPROTOENT); |
79072805 LW |
4647 | |
4648 | case KEY_setpwent: | |
4649 | FUN0(OP_SPWENT); | |
4650 | ||
4651 | case KEY_setgrent: | |
4652 | FUN0(OP_SGRENT); | |
4653 | ||
4654 | case KEY_seekdir: | |
a0d0e21e | 4655 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4656 | |
4657 | case KEY_setsockopt: | |
a0d0e21e | 4658 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4659 | |
4660 | case KEY_shift: | |
4661 | UNI(OP_SHIFT); | |
4662 | ||
4663 | case KEY_shmctl: | |
a0d0e21e | 4664 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4665 | |
4666 | case KEY_shmget: | |
a0d0e21e | 4667 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4668 | |
4669 | case KEY_shmread: | |
a0d0e21e | 4670 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4671 | |
4672 | case KEY_shmwrite: | |
a0d0e21e | 4673 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4674 | |
4675 | case KEY_shutdown: | |
a0d0e21e | 4676 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4677 | |
4678 | case KEY_sin: | |
4679 | UNI(OP_SIN); | |
4680 | ||
4681 | case KEY_sleep: | |
4682 | UNI(OP_SLEEP); | |
4683 | ||
4684 | case KEY_socket: | |
a0d0e21e | 4685 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4686 | |
4687 | case KEY_socketpair: | |
a0d0e21e | 4688 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4689 | |
4690 | case KEY_sort: | |
3280af22 | 4691 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4692 | s = skipspace(s); |
4693 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4694 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4695 | PL_expect = XTERM; |
15f0808c | 4696 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4697 | LOP(OP_SORT,XREF); |
79072805 LW |
4698 | |
4699 | case KEY_split: | |
a0d0e21e | 4700 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4701 | |
4702 | case KEY_sprintf: | |
a0d0e21e | 4703 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4704 | |
4705 | case KEY_splice: | |
a0d0e21e | 4706 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4707 | |
4708 | case KEY_sqrt: | |
4709 | UNI(OP_SQRT); | |
4710 | ||
4711 | case KEY_srand: | |
4712 | UNI(OP_SRAND); | |
4713 | ||
4714 | case KEY_stat: | |
4715 | UNI(OP_STAT); | |
4716 | ||
4717 | case KEY_study: | |
79072805 LW |
4718 | UNI(OP_STUDY); |
4719 | ||
4720 | case KEY_substr: | |
a0d0e21e | 4721 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4722 | |
4723 | case KEY_format: | |
4724 | case KEY_sub: | |
93a17b20 | 4725 | really_sub: |
09bef843 | 4726 | { |
3280af22 | 4727 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4728 | SSize_t tboffset; |
09bef843 SB |
4729 | expectation attrful; |
4730 | bool have_name, have_proto; | |
4731 | int key = tmp; | |
4732 | ||
4733 | s = skipspace(s); | |
4734 | ||
7e2040f0 | 4735 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4736 | (*s == ':' && s[1] == ':')) |
4737 | { | |
4738 | PL_expect = XBLOCK; | |
4739 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4740 | /* remember buffer pos'n for later force_word */ |
4741 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4742 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4743 | if (strchr(tmpbuf, ':')) | |
4744 | sv_setpv(PL_subname, tmpbuf); | |
4745 | else { | |
4746 | sv_setsv(PL_subname,PL_curstname); | |
4747 | sv_catpvn(PL_subname,"::",2); | |
4748 | sv_catpvn(PL_subname,tmpbuf,len); | |
4749 | } | |
4750 | s = skipspace(d); | |
4751 | have_name = TRUE; | |
4752 | } | |
463ee0b2 | 4753 | else { |
09bef843 SB |
4754 | if (key == KEY_my) |
4755 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4756 | PL_expect = XTERMBLOCK; | |
4757 | attrful = XATTRTERM; | |
4758 | sv_setpv(PL_subname,"?"); | |
4759 | have_name = FALSE; | |
463ee0b2 | 4760 | } |
4633a7c4 | 4761 | |
09bef843 SB |
4762 | if (key == KEY_format) { |
4763 | if (*s == '=') | |
4764 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4765 | if (have_name) | |
b1b65b59 JH |
4766 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4767 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4768 | OPERATOR(FORMAT); |
4769 | } | |
79072805 | 4770 | |
09bef843 SB |
4771 | /* Look for a prototype */ |
4772 | if (*s == '(') { | |
4773 | char *p; | |
4774 | ||
4775 | s = scan_str(s,FALSE,FALSE); | |
4776 | if (!s) { | |
4777 | if (PL_lex_stuff) | |
4778 | SvREFCNT_dec(PL_lex_stuff); | |
4779 | PL_lex_stuff = Nullsv; | |
4780 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4781 | } | |
4782 | /* strip spaces */ | |
4783 | d = SvPVX(PL_lex_stuff); | |
4784 | tmp = 0; | |
4785 | for (p = d; *p; ++p) { | |
4786 | if (!isSPACE(*p)) | |
4787 | d[tmp++] = *p; | |
4788 | } | |
4789 | d[tmp] = '\0'; | |
4790 | SvCUR(PL_lex_stuff) = tmp; | |
4791 | have_proto = TRUE; | |
68dc0745 | 4792 | |
09bef843 | 4793 | s = skipspace(s); |
4633a7c4 | 4794 | } |
09bef843 SB |
4795 | else |
4796 | have_proto = FALSE; | |
4797 | ||
4798 | if (*s == ':' && s[1] != ':') | |
4799 | PL_expect = attrful; | |
4800 | ||
4801 | if (have_proto) { | |
b1b65b59 JH |
4802 | PL_nextval[PL_nexttoke].opval = |
4803 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4804 | PL_lex_stuff = Nullsv; |
4805 | force_next(THING); | |
68dc0745 | 4806 | } |
09bef843 SB |
4807 | if (!have_name) { |
4808 | sv_setpv(PL_subname,"__ANON__"); | |
4809 | TOKEN(ANONSUB); | |
4633a7c4 | 4810 | } |
b1b65b59 JH |
4811 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4812 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4813 | if (key == KEY_my) |
4814 | TOKEN(MYSUB); | |
4815 | TOKEN(SUB); | |
4633a7c4 | 4816 | } |
79072805 LW |
4817 | |
4818 | case KEY_system: | |
4819 | set_csh(); | |
a0d0e21e | 4820 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4821 | |
4822 | case KEY_symlink: | |
a0d0e21e | 4823 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4824 | |
4825 | case KEY_syscall: | |
a0d0e21e | 4826 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4827 | |
c07a80fd | 4828 | case KEY_sysopen: |
4829 | LOP(OP_SYSOPEN,XTERM); | |
4830 | ||
137443ea | 4831 | case KEY_sysseek: |
4832 | LOP(OP_SYSSEEK,XTERM); | |
4833 | ||
79072805 | 4834 | case KEY_sysread: |
a0d0e21e | 4835 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4836 | |
4837 | case KEY_syswrite: | |
a0d0e21e | 4838 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4839 | |
4840 | case KEY_tr: | |
4841 | s = scan_trans(s); | |
4842 | TERM(sublex_start()); | |
4843 | ||
4844 | case KEY_tell: | |
4845 | UNI(OP_TELL); | |
4846 | ||
4847 | case KEY_telldir: | |
4848 | UNI(OP_TELLDIR); | |
4849 | ||
463ee0b2 | 4850 | case KEY_tie: |
a0d0e21e | 4851 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4852 | |
c07a80fd | 4853 | case KEY_tied: |
4854 | UNI(OP_TIED); | |
4855 | ||
79072805 LW |
4856 | case KEY_time: |
4857 | FUN0(OP_TIME); | |
4858 | ||
4859 | case KEY_times: | |
4860 | FUN0(OP_TMS); | |
4861 | ||
4862 | case KEY_truncate: | |
a0d0e21e | 4863 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4864 | |
4865 | case KEY_uc: | |
4866 | UNI(OP_UC); | |
4867 | ||
4868 | case KEY_ucfirst: | |
4869 | UNI(OP_UCFIRST); | |
4870 | ||
463ee0b2 LW |
4871 | case KEY_untie: |
4872 | UNI(OP_UNTIE); | |
4873 | ||
79072805 | 4874 | case KEY_until: |
57843af0 | 4875 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4876 | OPERATOR(UNTIL); |
4877 | ||
4878 | case KEY_unless: | |
57843af0 | 4879 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4880 | OPERATOR(UNLESS); |
4881 | ||
4882 | case KEY_unlink: | |
a0d0e21e | 4883 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4884 | |
4885 | case KEY_undef: | |
4886 | UNI(OP_UNDEF); | |
4887 | ||
4888 | case KEY_unpack: | |
a0d0e21e | 4889 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4890 | |
4891 | case KEY_utime: | |
a0d0e21e | 4892 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4893 | |
4894 | case KEY_umask: | |
e476b1b5 | 4895 | if (ckWARN(WARN_UMASK)) { |
3280af22 | 4896 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 | 4897 | if (*d != '0' && isDIGIT(*d)) |
e476b1b5 | 4898 | Perl_warner(aTHX_ WARN_UMASK, |
4438c4b7 | 4899 | "umask: argument is missing initial 0"); |
748a9306 | 4900 | } |
79072805 LW |
4901 | UNI(OP_UMASK); |
4902 | ||
4903 | case KEY_unshift: | |
a0d0e21e LW |
4904 | LOP(OP_UNSHIFT,XTERM); |
4905 | ||
4906 | case KEY_use: | |
3280af22 | 4907 | if (PL_expect != XSTATE) |
a0d0e21e | 4908 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4909 | s = skipspace(s); |
a7cb1f99 | 4910 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4911 | s = force_version(s); |
a7cb1f99 | 4912 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4913 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4914 | force_next(WORD); |
4915 | } | |
4916 | } | |
4917 | else { | |
4918 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4919 | s = force_version(s); | |
4920 | } | |
a0d0e21e LW |
4921 | yylval.ival = 1; |
4922 | OPERATOR(USE); | |
79072805 LW |
4923 | |
4924 | case KEY_values: | |
4925 | UNI(OP_VALUES); | |
4926 | ||
4927 | case KEY_vec: | |
a0d0e21e | 4928 | LOP(OP_VEC,XTERM); |
79072805 LW |
4929 | |
4930 | case KEY_while: | |
57843af0 | 4931 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4932 | OPERATOR(WHILE); |
4933 | ||
4934 | case KEY_warn: | |
3280af22 | 4935 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4936 | LOP(OP_WARN,XTERM); |
79072805 LW |
4937 | |
4938 | case KEY_wait: | |
4939 | FUN0(OP_WAIT); | |
4940 | ||
4941 | case KEY_waitpid: | |
a0d0e21e | 4942 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4943 | |
4944 | case KEY_wantarray: | |
4945 | FUN0(OP_WANTARRAY); | |
4946 | ||
4947 | case KEY_write: | |
9d116dd7 JH |
4948 | #ifdef EBCDIC |
4949 | { | |
4950 | static char ctl_l[2]; | |
4951 | ||
4952 | if (ctl_l[0] == '\0') | |
4953 | ctl_l[0] = toCTRL('L'); | |
4954 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4955 | } | |
4956 | #else | |
4957 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4958 | #endif | |
79072805 LW |
4959 | UNI(OP_ENTERWRITE); |
4960 | ||
4961 | case KEY_x: | |
3280af22 | 4962 | if (PL_expect == XOPERATOR) |
79072805 LW |
4963 | Mop(OP_REPEAT); |
4964 | check_uni(); | |
4965 | goto just_a_word; | |
4966 | ||
a0d0e21e LW |
4967 | case KEY_xor: |
4968 | yylval.ival = OP_XOR; | |
4969 | OPERATOR(OROP); | |
4970 | ||
79072805 LW |
4971 | case KEY_y: |
4972 | s = scan_trans(s); | |
4973 | TERM(sublex_start()); | |
4974 | } | |
49dc05e3 | 4975 | }} |
79072805 LW |
4976 | } |
4977 | ||
4978 | I32 | |
864dbfa3 | 4979 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4980 | { |
4981 | switch (*d) { | |
4982 | case '_': | |
4983 | if (d[1] == '_') { | |
a0d0e21e | 4984 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4985 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4986 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4987 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4988 | if (strEQ(d,"__END__")) return KEY___END__; |
4989 | } | |
4990 | break; | |
8990e307 LW |
4991 | case 'A': |
4992 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4993 | break; | |
79072805 | 4994 | case 'a': |
463ee0b2 LW |
4995 | switch (len) { |
4996 | case 3: | |
a0d0e21e LW |
4997 | if (strEQ(d,"and")) return -KEY_and; |
4998 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4999 | break; |
463ee0b2 | 5000 | case 5: |
a0d0e21e LW |
5001 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5002 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5003 | break; |
5004 | case 6: | |
a0d0e21e | 5005 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5006 | break; |
5007 | } | |
79072805 LW |
5008 | break; |
5009 | case 'B': | |
5010 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5011 | break; |
79072805 | 5012 | case 'b': |
a0d0e21e LW |
5013 | if (strEQ(d,"bless")) return -KEY_bless; |
5014 | if (strEQ(d,"bind")) return -KEY_bind; | |
5015 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5016 | break; | |
5017 | case 'C': | |
5018 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5019 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5020 | break; |
5021 | case 'c': | |
5022 | switch (len) { | |
5023 | case 3: | |
a0d0e21e LW |
5024 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5025 | if (strEQ(d,"chr")) return -KEY_chr; | |
5026 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5027 | break; |
5028 | case 4: | |
5029 | if (strEQ(d,"chop")) return KEY_chop; | |
5030 | break; | |
5031 | case 5: | |
a0d0e21e LW |
5032 | if (strEQ(d,"close")) return -KEY_close; |
5033 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
5034 | if (strEQ(d,"chomp")) return KEY_chomp; | |
5035 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
5036 | if (strEQ(d,"chown")) return -KEY_chown; | |
5037 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5038 | break; |
5039 | case 6: | |
a0d0e21e LW |
5040 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5041 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5042 | break; |
5043 | case 7: | |
a0d0e21e | 5044 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5045 | break; |
5046 | case 8: | |
a0d0e21e LW |
5047 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5048 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5049 | break; |
5050 | } | |
5051 | break; | |
ed6116ce LW |
5052 | case 'D': |
5053 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5054 | break; | |
79072805 LW |
5055 | case 'd': |
5056 | switch (len) { | |
5057 | case 2: | |
5058 | if (strEQ(d,"do")) return KEY_do; | |
5059 | break; | |
5060 | case 3: | |
a0d0e21e | 5061 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5062 | break; |
5063 | case 4: | |
a0d0e21e | 5064 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5065 | break; |
5066 | case 6: | |
5067 | if (strEQ(d,"delete")) return KEY_delete; | |
5068 | break; | |
5069 | case 7: | |
5070 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5071 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5072 | break; |
5073 | case 8: | |
a0d0e21e | 5074 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5075 | break; |
5076 | } | |
5077 | break; | |
5078 | case 'E': | |
a0d0e21e | 5079 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
5080 | if (strEQ(d,"END")) return KEY_END; |
5081 | break; | |
5082 | case 'e': | |
5083 | switch (len) { | |
5084 | case 2: | |
a0d0e21e | 5085 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5086 | break; |
5087 | case 3: | |
a0d0e21e LW |
5088 | if (strEQ(d,"eof")) return -KEY_eof; |
5089 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5090 | break; |
5091 | case 4: | |
5092 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5093 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5094 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5095 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
5096 | if (strEQ(d,"each")) return KEY_each; |
5097 | break; | |
5098 | case 5: | |
5099 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5100 | break; | |
a0d0e21e LW |
5101 | case 6: |
5102 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5103 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5104 | break; |
79072805 | 5105 | case 8: |
a0d0e21e LW |
5106 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5107 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5108 | break; |
5109 | case 9: | |
a0d0e21e | 5110 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5111 | break; |
5112 | case 10: | |
a0d0e21e LW |
5113 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5114 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5115 | break; |
5116 | case 11: | |
a0d0e21e | 5117 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5118 | break; |
a687059c | 5119 | } |
a687059c | 5120 | break; |
79072805 LW |
5121 | case 'f': |
5122 | switch (len) { | |
5123 | case 3: | |
5124 | if (strEQ(d,"for")) return KEY_for; | |
5125 | break; | |
5126 | case 4: | |
a0d0e21e | 5127 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5128 | break; |
5129 | case 5: | |
a0d0e21e LW |
5130 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5131 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5132 | break; |
5133 | case 6: | |
5134 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5135 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5136 | break; |
5137 | case 7: | |
5138 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5139 | break; | |
5140 | case 8: | |
a0d0e21e | 5141 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5142 | break; |
378cc40b | 5143 | } |
a687059c | 5144 | break; |
79072805 LW |
5145 | case 'G': |
5146 | if (len == 2) { | |
a0d0e21e LW |
5147 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5148 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5149 | } |
a687059c | 5150 | break; |
79072805 | 5151 | case 'g': |
a687059c LW |
5152 | if (strnEQ(d,"get",3)) { |
5153 | d += 3; | |
5154 | if (*d == 'p') { | |
79072805 LW |
5155 | switch (len) { |
5156 | case 7: | |
a0d0e21e LW |
5157 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5158 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5159 | break; |
5160 | case 8: | |
a0d0e21e LW |
5161 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5162 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5163 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5164 | break; |
5165 | case 11: | |
a0d0e21e LW |
5166 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5167 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5168 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5169 | break; |
5170 | case 14: | |
a0d0e21e | 5171 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5172 | break; |
5173 | case 16: | |
a0d0e21e | 5174 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5175 | break; |
5176 | } | |
a687059c LW |
5177 | } |
5178 | else if (*d == 'h') { | |
a0d0e21e LW |
5179 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5180 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5181 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5182 | } |
5183 | else if (*d == 'n') { | |
a0d0e21e LW |
5184 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5185 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5186 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5187 | } |
5188 | else if (*d == 's') { | |
a0d0e21e LW |
5189 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5190 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5191 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5192 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5193 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5194 | } |
5195 | else if (*d == 'g') { | |
a0d0e21e LW |
5196 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5197 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5198 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5199 | } |
5200 | else if (*d == 'l') { | |
a0d0e21e | 5201 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5202 | } |
a0d0e21e | 5203 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5204 | break; |
a687059c | 5205 | } |
79072805 LW |
5206 | switch (len) { |
5207 | case 2: | |
a0d0e21e LW |
5208 | if (strEQ(d,"gt")) return -KEY_gt; |
5209 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5210 | break; |
5211 | case 4: | |
5212 | if (strEQ(d,"grep")) return KEY_grep; | |
5213 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5214 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5215 | break; |
5216 | case 6: | |
a0d0e21e | 5217 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5218 | break; |
378cc40b | 5219 | } |
a687059c | 5220 | break; |
79072805 | 5221 | case 'h': |
a0d0e21e | 5222 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5223 | break; |
7d07dbc2 MB |
5224 | case 'I': |
5225 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5226 | break; | |
79072805 LW |
5227 | case 'i': |
5228 | switch (len) { | |
5229 | case 2: | |
5230 | if (strEQ(d,"if")) return KEY_if; | |
5231 | break; | |
5232 | case 3: | |
a0d0e21e | 5233 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5234 | break; |
5235 | case 5: | |
a0d0e21e LW |
5236 | if (strEQ(d,"index")) return -KEY_index; |
5237 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5238 | break; |
5239 | } | |
a687059c | 5240 | break; |
79072805 | 5241 | case 'j': |
a0d0e21e | 5242 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5243 | break; |
79072805 LW |
5244 | case 'k': |
5245 | if (len == 4) { | |
5246 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5247 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5248 | } |
79072805 LW |
5249 | break; |
5250 | case 'L': | |
5251 | if (len == 2) { | |
a0d0e21e LW |
5252 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5253 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5254 | } |
79072805 LW |
5255 | break; |
5256 | case 'l': | |
5257 | switch (len) { | |
5258 | case 2: | |
a0d0e21e LW |
5259 | if (strEQ(d,"lt")) return -KEY_lt; |
5260 | if (strEQ(d,"le")) return -KEY_le; | |
5261 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5262 | break; |
5263 | case 3: | |
a0d0e21e | 5264 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5265 | break; |
5266 | case 4: | |
5267 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5268 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5269 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5270 | break; |
79072805 LW |
5271 | case 5: |
5272 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5273 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5274 | break; |
5275 | case 6: | |
a0d0e21e LW |
5276 | if (strEQ(d,"length")) return -KEY_length; |
5277 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5278 | break; |
5279 | case 7: | |
a0d0e21e | 5280 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5281 | break; |
5282 | case 9: | |
a0d0e21e | 5283 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5284 | break; |
5285 | } | |
a687059c | 5286 | break; |
79072805 LW |
5287 | case 'm': |
5288 | switch (len) { | |
5289 | case 1: return KEY_m; | |
93a17b20 LW |
5290 | case 2: |
5291 | if (strEQ(d,"my")) return KEY_my; | |
5292 | break; | |
a0d0e21e LW |
5293 | case 3: |
5294 | if (strEQ(d,"map")) return KEY_map; | |
5295 | break; | |
79072805 | 5296 | case 5: |
a0d0e21e | 5297 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5298 | break; |
5299 | case 6: | |
a0d0e21e LW |
5300 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5301 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5302 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5303 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5304 | break; |
5305 | } | |
a687059c | 5306 | break; |
79072805 | 5307 | case 'N': |
a0d0e21e | 5308 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5309 | break; |
79072805 LW |
5310 | case 'n': |
5311 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5312 | if (strEQ(d,"ne")) return -KEY_ne; |
5313 | if (strEQ(d,"not")) return -KEY_not; | |
5314 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5315 | break; |
79072805 LW |
5316 | case 'o': |
5317 | switch (len) { | |
463ee0b2 | 5318 | case 2: |
a0d0e21e | 5319 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5320 | break; |
79072805 | 5321 | case 3: |
a0d0e21e LW |
5322 | if (strEQ(d,"ord")) return -KEY_ord; |
5323 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5324 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5325 | break; |
5326 | case 4: | |
a0d0e21e | 5327 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5328 | break; |
5329 | case 7: | |
a0d0e21e | 5330 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5331 | break; |
fe14fcc3 | 5332 | } |
a687059c | 5333 | break; |
79072805 LW |
5334 | case 'p': |
5335 | switch (len) { | |
5336 | case 3: | |
5337 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5338 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5339 | break; |
5340 | case 4: | |
5341 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5342 | if (strEQ(d,"pack")) return -KEY_pack; |
5343 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5344 | break; |
5345 | case 5: | |
5346 | if (strEQ(d,"print")) return KEY_print; | |
5347 | break; | |
5348 | case 6: | |
5349 | if (strEQ(d,"printf")) return KEY_printf; | |
5350 | break; | |
5351 | case 7: | |
5352 | if (strEQ(d,"package")) return KEY_package; | |
5353 | break; | |
c07a80fd | 5354 | case 9: |
5355 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5356 | } |
79072805 LW |
5357 | break; |
5358 | case 'q': | |
5359 | if (len <= 2) { | |
5360 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5361 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5362 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5363 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5364 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5365 | } |
a0d0e21e | 5366 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5367 | break; |
5368 | case 'r': | |
5369 | switch (len) { | |
5370 | case 3: | |
a0d0e21e | 5371 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5372 | break; |
5373 | case 4: | |
a0d0e21e LW |
5374 | if (strEQ(d,"read")) return -KEY_read; |
5375 | if (strEQ(d,"rand")) return -KEY_rand; | |
5376 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5377 | if (strEQ(d,"redo")) return KEY_redo; |
5378 | break; | |
5379 | case 5: | |
a0d0e21e LW |
5380 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5381 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5382 | break; |
5383 | case 6: | |
5384 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5385 | if (strEQ(d,"rename")) return -KEY_rename; |
5386 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5387 | break; |
5388 | case 7: | |
a0d0e21e LW |
5389 | if (strEQ(d,"require")) return -KEY_require; |
5390 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5391 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5392 | break; |
5393 | case 8: | |
a0d0e21e LW |
5394 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5395 | if (strEQ(d,"readline")) return -KEY_readline; | |
5396 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5397 | break; |
5398 | case 9: | |
a0d0e21e | 5399 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5400 | break; |
a687059c | 5401 | } |
79072805 LW |
5402 | break; |
5403 | case 's': | |
a687059c | 5404 | switch (d[1]) { |
79072805 | 5405 | case 0: return KEY_s; |
a687059c | 5406 | case 'c': |
79072805 | 5407 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5408 | break; |
5409 | case 'e': | |
79072805 LW |
5410 | switch (len) { |
5411 | case 4: | |
a0d0e21e LW |
5412 | if (strEQ(d,"seek")) return -KEY_seek; |
5413 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5414 | break; |
5415 | case 5: | |
a0d0e21e | 5416 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5417 | break; |
5418 | case 6: | |
a0d0e21e LW |
5419 | if (strEQ(d,"select")) return -KEY_select; |
5420 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5421 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5422 | break; |
5423 | case 7: | |
a0d0e21e LW |
5424 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5425 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5426 | break; |
5427 | case 8: | |
a0d0e21e LW |
5428 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5429 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5430 | break; |
5431 | case 9: | |
a0d0e21e | 5432 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5433 | break; |
5434 | case 10: | |
a0d0e21e LW |
5435 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5436 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5437 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5438 | break; |
5439 | case 11: | |
a0d0e21e LW |
5440 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5441 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5442 | break; |
5443 | } | |
a687059c LW |
5444 | break; |
5445 | case 'h': | |
79072805 LW |
5446 | switch (len) { |
5447 | case 5: | |
5448 | if (strEQ(d,"shift")) return KEY_shift; | |
5449 | break; | |
5450 | case 6: | |
a0d0e21e LW |
5451 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5452 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5453 | break; |
5454 | case 7: | |
a0d0e21e | 5455 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5456 | break; |
5457 | case 8: | |
a0d0e21e LW |
5458 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5459 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5460 | break; |
5461 | } | |
a687059c LW |
5462 | break; |
5463 | case 'i': | |
a0d0e21e | 5464 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5465 | break; |
5466 | case 'l': | |
a0d0e21e | 5467 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5468 | break; |
5469 | case 'o': | |
79072805 | 5470 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5471 | if (strEQ(d,"socket")) return -KEY_socket; |
5472 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5473 | break; |
5474 | case 'p': | |
79072805 | 5475 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5476 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5477 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5478 | break; |
5479 | case 'q': | |
a0d0e21e | 5480 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5481 | break; |
5482 | case 'r': | |
a0d0e21e | 5483 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5484 | break; |
5485 | case 't': | |
a0d0e21e | 5486 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5487 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5488 | break; |
5489 | case 'u': | |
a0d0e21e | 5490 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5491 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5492 | break; |
5493 | case 'y': | |
79072805 LW |
5494 | switch (len) { |
5495 | case 6: | |
a0d0e21e | 5496 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5497 | break; |
5498 | case 7: | |
a0d0e21e LW |
5499 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5500 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5501 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5502 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5503 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5504 | break; |
5505 | case 8: | |
a0d0e21e | 5506 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5507 | break; |
a687059c | 5508 | } |
a687059c LW |
5509 | break; |
5510 | } | |
5511 | break; | |
79072805 LW |
5512 | case 't': |
5513 | switch (len) { | |
5514 | case 2: | |
5515 | if (strEQ(d,"tr")) return KEY_tr; | |
5516 | break; | |
463ee0b2 LW |
5517 | case 3: |
5518 | if (strEQ(d,"tie")) return KEY_tie; | |
5519 | break; | |
79072805 | 5520 | case 4: |
a0d0e21e | 5521 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5522 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5523 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5524 | break; |
5525 | case 5: | |
a0d0e21e | 5526 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5527 | break; |
5528 | case 7: | |
a0d0e21e | 5529 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5530 | break; |
5531 | case 8: | |
a0d0e21e | 5532 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5533 | break; |
378cc40b | 5534 | } |
a687059c | 5535 | break; |
79072805 LW |
5536 | case 'u': |
5537 | switch (len) { | |
5538 | case 2: | |
a0d0e21e LW |
5539 | if (strEQ(d,"uc")) return -KEY_uc; |
5540 | break; | |
5541 | case 3: | |
5542 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5543 | break; |
5544 | case 5: | |
5545 | if (strEQ(d,"undef")) return KEY_undef; | |
5546 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5547 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5548 | if (strEQ(d,"utime")) return -KEY_utime; |
5549 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5550 | break; |
5551 | case 6: | |
5552 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5553 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5554 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5555 | break; |
5556 | case 7: | |
5557 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5558 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5559 | break; |
a687059c LW |
5560 | } |
5561 | break; | |
79072805 | 5562 | case 'v': |
a0d0e21e LW |
5563 | if (strEQ(d,"values")) return -KEY_values; |
5564 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5565 | break; |
79072805 LW |
5566 | case 'w': |
5567 | switch (len) { | |
5568 | case 4: | |
a0d0e21e LW |
5569 | if (strEQ(d,"warn")) return -KEY_warn; |
5570 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5571 | break; |
5572 | case 5: | |
5573 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5574 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5575 | break; |
5576 | case 7: | |
a0d0e21e | 5577 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5578 | break; |
5579 | case 9: | |
a0d0e21e | 5580 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5581 | break; |
2f3197b3 | 5582 | } |
a687059c | 5583 | break; |
79072805 | 5584 | case 'x': |
a0d0e21e LW |
5585 | if (len == 1) return -KEY_x; |
5586 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5587 | break; |
79072805 LW |
5588 | case 'y': |
5589 | if (len == 1) return KEY_y; | |
5590 | break; | |
5591 | case 'z': | |
a687059c LW |
5592 | break; |
5593 | } | |
79072805 | 5594 | return 0; |
a687059c LW |
5595 | } |
5596 | ||
76e3520e | 5597 | STATIC void |
cea2e8a9 | 5598 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5599 | { |
2f3197b3 LW |
5600 | char *w; |
5601 | ||
d008e5eb GS |
5602 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5603 | dTHR; /* only for ckWARN */ | |
5604 | if (ckWARN(WARN_SYNTAX)) { | |
5605 | int level = 1; | |
5606 | for (w = s+2; *w && level; w++) { | |
5607 | if (*w == '(') | |
5608 | ++level; | |
5609 | else if (*w == ')') | |
5610 | --level; | |
5611 | } | |
5612 | if (*w) | |
5613 | for (; *w && isSPACE(*w); w++) ; | |
5614 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5615 | Perl_warner(aTHX_ WARN_SYNTAX, |
5616 | "%s (...) interpreted as function",name); | |
d008e5eb | 5617 | } |
2f3197b3 | 5618 | } |
3280af22 | 5619 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5620 | s++; |
a687059c LW |
5621 | if (*s == '(') |
5622 | s++; | |
3280af22 | 5623 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5624 | s++; |
7e2040f0 | 5625 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5626 | w = s++; |
7e2040f0 | 5627 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5628 | s++; |
3280af22 | 5629 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5630 | s++; |
e929a76b | 5631 | if (*s == ',') { |
463ee0b2 | 5632 | int kw; |
e929a76b | 5633 | *s = '\0'; |
864dbfa3 | 5634 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5635 | *s = ','; |
463ee0b2 | 5636 | if (kw) |
e929a76b | 5637 | return; |
cea2e8a9 | 5638 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5639 | } |
5640 | } | |
5641 | } | |
5642 | ||
423cee85 JH |
5643 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5644 | Best used as sv=new_constant(..., sv, ...). | |
5645 | If s, pv are NULL, calls subroutine with one argument, | |
5646 | and type is used with error messages only. */ | |
5647 | ||
b3ac6de7 | 5648 | STATIC SV * |
dff6d3cd | 5649 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 5650 | const char *type) |
b3ac6de7 | 5651 | { |
b3ac6de7 | 5652 | dSP; |
3280af22 | 5653 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5654 | SV *res; |
b3ac6de7 IZ |
5655 | SV **cvp; |
5656 | SV *cv, *typesv; | |
f0af216f | 5657 | const char *why1, *why2, *why3; |
423cee85 | 5658 | |
f0af216f | 5659 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
5660 | SV *msg; |
5661 | ||
f0af216f GS |
5662 | why1 = "%^H is not consistent"; |
5663 | why2 = strEQ(key,"charnames") | |
5664 | ? " (missing \"use charnames ...\"?)" | |
5665 | : ""; | |
5666 | why3 = ""; | |
423cee85 JH |
5667 | report: |
5668 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
f0af216f | 5669 | (type ? type: "undef"), why1, why2, why3); |
423cee85 JH |
5670 | yyerror(SvPVX(msg)); |
5671 | SvREFCNT_dec(msg); | |
5672 | return sv; | |
5673 | } | |
b3ac6de7 IZ |
5674 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
5675 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5676 | why1 = "$^H{"; |
5677 | why2 = key; | |
f0af216f | 5678 | why3 = "} is not defined"; |
423cee85 | 5679 | goto report; |
b3ac6de7 IZ |
5680 | } |
5681 | sv_2mortal(sv); /* Parent created it permanently */ | |
5682 | cv = *cvp; | |
423cee85 JH |
5683 | if (!pv && s) |
5684 | pv = sv_2mortal(newSVpvn(s, len)); | |
5685 | if (type && pv) | |
5686 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5687 | else |
423cee85 JH |
5688 | typesv = &PL_sv_undef; |
5689 | ||
e788e7d3 | 5690 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5691 | ENTER ; |
5692 | SAVETMPS; | |
5693 | ||
5694 | PUSHMARK(SP) ; | |
25eaa213 | 5695 | EXTEND(sp, 4); |
423cee85 JH |
5696 | if (pv) |
5697 | PUSHs(pv); | |
b3ac6de7 | 5698 | PUSHs(sv); |
423cee85 JH |
5699 | if (pv) |
5700 | PUSHs(typesv); | |
b3ac6de7 IZ |
5701 | PUSHs(cv); |
5702 | PUTBACK; | |
423cee85 JH |
5703 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5704 | ||
5705 | SPAGAIN ; | |
5706 | ||
5707 | /* Check the eval first */ | |
9b0e499b | 5708 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
5709 | STRLEN n_a; |
5710 | sv_catpv(ERRSV, "Propagated"); | |
5711 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5712 | (void)POPs; |
423cee85 JH |
5713 | res = SvREFCNT_inc(sv); |
5714 | } | |
5715 | else { | |
5716 | res = POPs; | |
e1f15930 | 5717 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5718 | } |
5719 | ||
5720 | PUTBACK ; | |
5721 | FREETMPS ; | |
5722 | LEAVE ; | |
b3ac6de7 | 5723 | POPSTACK; |
423cee85 | 5724 | |
b3ac6de7 | 5725 | if (!SvOK(res)) { |
423cee85 JH |
5726 | why1 = "Call to &{$^H{"; |
5727 | why2 = key; | |
f0af216f | 5728 | why3 = "}} did not return a defined value"; |
423cee85 JH |
5729 | sv = res; |
5730 | goto report; | |
9b0e499b | 5731 | } |
423cee85 | 5732 | |
9b0e499b | 5733 | return res; |
b3ac6de7 | 5734 | } |
423cee85 | 5735 | |
76e3520e | 5736 | STATIC char * |
cea2e8a9 | 5737 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5738 | { |
5739 | register char *d = dest; | |
8903cb82 | 5740 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5741 | for (;;) { |
8903cb82 | 5742 | if (d >= e) |
cea2e8a9 | 5743 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5744 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5745 | *d++ = *s++; |
7e2040f0 | 5746 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5747 | *d++ = ':'; |
5748 | *d++ = ':'; | |
5749 | s++; | |
5750 | } | |
c3e0f903 | 5751 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5752 | *d++ = *s++; |
5753 | *d++ = *s++; | |
5754 | } | |
834a4ddd | 5755 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5756 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5757 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5758 | t += UTF8SKIP(t); |
5759 | if (d + (t - s) > e) | |
cea2e8a9 | 5760 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5761 | Copy(s, d, t - s, char); |
5762 | d += t - s; | |
5763 | s = t; | |
5764 | } | |
463ee0b2 LW |
5765 | else { |
5766 | *d = '\0'; | |
5767 | *slp = d - dest; | |
5768 | return s; | |
e929a76b | 5769 | } |
378cc40b LW |
5770 | } |
5771 | } | |
5772 | ||
76e3520e | 5773 | STATIC char * |
cea2e8a9 | 5774 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5775 | { |
5776 | register char *d; | |
8903cb82 | 5777 | register char *e; |
79072805 | 5778 | char *bracket = 0; |
748a9306 | 5779 | char funny = *s++; |
378cc40b | 5780 | |
a0d0e21e LW |
5781 | if (isSPACE(*s)) |
5782 | s = skipspace(s); | |
378cc40b | 5783 | d = dest; |
8903cb82 | 5784 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5785 | if (isDIGIT(*s)) { |
8903cb82 | 5786 | while (isDIGIT(*s)) { |
5787 | if (d >= e) | |
cea2e8a9 | 5788 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5789 | *d++ = *s++; |
8903cb82 | 5790 | } |
378cc40b LW |
5791 | } |
5792 | else { | |
463ee0b2 | 5793 | for (;;) { |
8903cb82 | 5794 | if (d >= e) |
cea2e8a9 | 5795 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5796 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5797 | *d++ = *s++; |
7e2040f0 | 5798 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5799 | *d++ = ':'; |
5800 | *d++ = ':'; | |
5801 | s++; | |
5802 | } | |
a0d0e21e | 5803 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5804 | *d++ = *s++; |
5805 | *d++ = *s++; | |
5806 | } | |
834a4ddd | 5807 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5808 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5809 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5810 | t += UTF8SKIP(t); |
5811 | if (d + (t - s) > e) | |
cea2e8a9 | 5812 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5813 | Copy(s, d, t - s, char); |
5814 | d += t - s; | |
5815 | s = t; | |
5816 | } | |
463ee0b2 LW |
5817 | else |
5818 | break; | |
5819 | } | |
378cc40b LW |
5820 | } |
5821 | *d = '\0'; | |
5822 | d = dest; | |
79072805 | 5823 | if (*d) { |
3280af22 NIS |
5824 | if (PL_lex_state != LEX_NORMAL) |
5825 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5826 | return s; |
378cc40b | 5827 | } |
748a9306 | 5828 | if (*s == '$' && s[1] && |
7e2040f0 | 5829 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5830 | { |
4810e5ec | 5831 | return s; |
5cd24f17 | 5832 | } |
79072805 LW |
5833 | if (*s == '{') { |
5834 | bracket = s; | |
5835 | s++; | |
5836 | } | |
5837 | else if (ck_uni) | |
5838 | check_uni(); | |
93a17b20 | 5839 | if (s < send) |
79072805 LW |
5840 | *d = *s++; |
5841 | d[1] = '\0'; | |
2b92dfce | 5842 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5843 | *d = toCTRL(*s); |
5844 | s++; | |
de3bb511 | 5845 | } |
79072805 | 5846 | if (bracket) { |
748a9306 | 5847 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5848 | while (s < send) { |
5849 | char ch = *s++; | |
5850 | if (ch != ' ' && ch != '\t') { | |
5851 | *d = ch; | |
5852 | break; | |
5853 | } | |
5854 | } | |
748a9306 | 5855 | } |
7e2040f0 | 5856 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 5857 | d++; |
a0ed51b3 LW |
5858 | if (UTF) { |
5859 | e = s; | |
155aba94 | 5860 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 5861 | e += UTF8SKIP(e); |
dfe13c55 | 5862 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5863 | e += UTF8SKIP(e); |
5864 | } | |
5865 | Copy(s, d, e - s, char); | |
5866 | d += e - s; | |
5867 | s = e; | |
5868 | } | |
5869 | else { | |
2b92dfce | 5870 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5871 | *d++ = *s++; |
2b92dfce | 5872 | if (d >= e) |
cea2e8a9 | 5873 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5874 | } |
79072805 | 5875 | *d = '\0'; |
748a9306 | 5876 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5877 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5878 | dTHR; /* only for ckWARN */ |
599cee73 | 5879 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5880 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5881 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5882 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5883 | funny, dest, brack, funny, dest, brack); |
5884 | } | |
79072805 | 5885 | bracket++; |
a0be28da | 5886 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5887 | return s; |
5888 | } | |
2b92dfce GS |
5889 | } |
5890 | /* Handle extended ${^Foo} variables | |
5891 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5892 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5893 | && isALNUM(*s)) | |
5894 | { | |
5895 | d++; | |
5896 | while (isALNUM(*s) && d < e) { | |
5897 | *d++ = *s++; | |
5898 | } | |
5899 | if (d >= e) | |
cea2e8a9 | 5900 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5901 | *d = '\0'; |
79072805 LW |
5902 | } |
5903 | if (*s == '}') { | |
5904 | s++; | |
3280af22 NIS |
5905 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5906 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5907 | if (funny == '#') |
5908 | funny = '@'; | |
d008e5eb GS |
5909 | if (PL_lex_state == LEX_NORMAL) { |
5910 | dTHR; /* only for ckWARN */ | |
5911 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5912 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5913 | { |
cea2e8a9 | 5914 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5915 | "Ambiguous use of %c{%s} resolved to %c%s", |
5916 | funny, dest, funny, dest); | |
5917 | } | |
5918 | } | |
79072805 LW |
5919 | } |
5920 | else { | |
5921 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5922 | *dest = '\0'; |
79072805 LW |
5923 | } |
5924 | } | |
3280af22 NIS |
5925 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5926 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5927 | return s; |
5928 | } | |
5929 | ||
cea2e8a9 GS |
5930 | void |
5931 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5932 | { |
bbce6d69 | 5933 | if (ch == 'i') |
a0d0e21e | 5934 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5935 | else if (ch == 'g') |
5936 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5937 | else if (ch == 'c') |
5938 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5939 | else if (ch == 'o') |
5940 | *pmfl |= PMf_KEEP; | |
5941 | else if (ch == 'm') | |
5942 | *pmfl |= PMf_MULTILINE; | |
5943 | else if (ch == 's') | |
5944 | *pmfl |= PMf_SINGLELINE; | |
5945 | else if (ch == 'x') | |
5946 | *pmfl |= PMf_EXTENDED; | |
5947 | } | |
378cc40b | 5948 | |
76e3520e | 5949 | STATIC char * |
cea2e8a9 | 5950 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5951 | { |
79072805 LW |
5952 | PMOP *pm; |
5953 | char *s; | |
378cc40b | 5954 | |
09bef843 | 5955 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5956 | if (!s) { |
3280af22 NIS |
5957 | if (PL_lex_stuff) |
5958 | SvREFCNT_dec(PL_lex_stuff); | |
5959 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5960 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5961 | } |
bbce6d69 | 5962 | |
8782bef2 | 5963 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5964 | if (PL_multi_open == '?') |
79072805 | 5965 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5966 | if(type == OP_QR) { |
5967 | while (*s && strchr("iomsx", *s)) | |
5968 | pmflag(&pm->op_pmflags,*s++); | |
5969 | } | |
5970 | else { | |
5971 | while (*s && strchr("iogcmsx", *s)) | |
5972 | pmflag(&pm->op_pmflags,*s++); | |
5973 | } | |
4633a7c4 | 5974 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5975 | |
3280af22 | 5976 | PL_lex_op = (OP*)pm; |
79072805 | 5977 | yylval.ival = OP_MATCH; |
378cc40b LW |
5978 | return s; |
5979 | } | |
5980 | ||
76e3520e | 5981 | STATIC char * |
cea2e8a9 | 5982 | S_scan_subst(pTHX_ char *start) |
79072805 | 5983 | { |
a0d0e21e | 5984 | register char *s; |
79072805 | 5985 | register PMOP *pm; |
4fdae800 | 5986 | I32 first_start; |
79072805 LW |
5987 | I32 es = 0; |
5988 | ||
79072805 LW |
5989 | yylval.ival = OP_NULL; |
5990 | ||
09bef843 | 5991 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5992 | |
5993 | if (!s) { | |
3280af22 NIS |
5994 | if (PL_lex_stuff) |
5995 | SvREFCNT_dec(PL_lex_stuff); | |
5996 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5997 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5998 | } |
79072805 | 5999 | |
3280af22 | 6000 | if (s[-1] == PL_multi_open) |
79072805 LW |
6001 | s--; |
6002 | ||
3280af22 | 6003 | first_start = PL_multi_start; |
09bef843 | 6004 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6005 | if (!s) { |
3280af22 NIS |
6006 | if (PL_lex_stuff) |
6007 | SvREFCNT_dec(PL_lex_stuff); | |
6008 | PL_lex_stuff = Nullsv; | |
6009 | if (PL_lex_repl) | |
6010 | SvREFCNT_dec(PL_lex_repl); | |
6011 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6012 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6013 | } |
3280af22 | 6014 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6015 | |
79072805 | 6016 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6017 | while (*s) { |
a687059c LW |
6018 | if (*s == 'e') { |
6019 | s++; | |
2f3197b3 | 6020 | es++; |
a687059c | 6021 | } |
b3eb6a9b | 6022 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6023 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6024 | else |
6025 | break; | |
378cc40b | 6026 | } |
79072805 LW |
6027 | |
6028 | if (es) { | |
6029 | SV *repl; | |
0244c3a4 GS |
6030 | PL_sublex_info.super_bufptr = s; |
6031 | PL_sublex_info.super_bufend = PL_bufend; | |
6032 | PL_multi_end = 0; | |
79072805 | 6033 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6034 | repl = newSVpvn("",0); |
463ee0b2 | 6035 | while (es-- > 0) |
a0d0e21e | 6036 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6037 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6038 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6039 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6040 | SvEVALED_on(repl); |
3280af22 NIS |
6041 | SvREFCNT_dec(PL_lex_repl); |
6042 | PL_lex_repl = repl; | |
378cc40b | 6043 | } |
79072805 | 6044 | |
4633a7c4 | 6045 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6046 | PL_lex_op = (OP*)pm; |
79072805 | 6047 | yylval.ival = OP_SUBST; |
378cc40b LW |
6048 | return s; |
6049 | } | |
6050 | ||
76e3520e | 6051 | STATIC char * |
cea2e8a9 | 6052 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6053 | { |
a0d0e21e | 6054 | register char* s; |
11343788 | 6055 | OP *o; |
79072805 LW |
6056 | short *tbl; |
6057 | I32 squash; | |
a0ed51b3 | 6058 | I32 del; |
79072805 | 6059 | I32 complement; |
a0ed51b3 LW |
6060 | I32 utf8; |
6061 | I32 count = 0; | |
79072805 LW |
6062 | |
6063 | yylval.ival = OP_NULL; | |
6064 | ||
09bef843 | 6065 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6066 | if (!s) { |
3280af22 NIS |
6067 | if (PL_lex_stuff) |
6068 | SvREFCNT_dec(PL_lex_stuff); | |
6069 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 6070 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 6071 | } |
3280af22 | 6072 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6073 | s--; |
6074 | ||
09bef843 | 6075 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6076 | if (!s) { |
3280af22 NIS |
6077 | if (PL_lex_stuff) |
6078 | SvREFCNT_dec(PL_lex_stuff); | |
6079 | PL_lex_stuff = Nullsv; | |
6080 | if (PL_lex_repl) | |
6081 | SvREFCNT_dec(PL_lex_repl); | |
6082 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6083 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6084 | } |
79072805 | 6085 | |
a0ed51b3 LW |
6086 | if (UTF) { |
6087 | o = newSVOP(OP_TRANS, 0, 0); | |
6088 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
6089 | } | |
6090 | else { | |
6091 | New(803,tbl,256,short); | |
6092 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
6093 | utf8 = 0; | |
6094 | } | |
2f3197b3 | 6095 | |
a0ed51b3 LW |
6096 | complement = del = squash = 0; |
6097 | while (strchr("cdsCU", *s)) { | |
395c3793 | 6098 | if (*s == 'c') |
79072805 | 6099 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6100 | else if (*s == 'd') |
a0ed51b3 LW |
6101 | del = OPpTRANS_DELETE; |
6102 | else if (*s == 's') | |
79072805 | 6103 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
6104 | else { |
6105 | switch (count++) { | |
6106 | case 0: | |
6107 | if (*s == 'C') | |
6108 | utf8 &= ~OPpTRANS_FROM_UTF; | |
6109 | else | |
6110 | utf8 |= OPpTRANS_FROM_UTF; | |
6111 | break; | |
6112 | case 1: | |
6113 | if (*s == 'C') | |
6114 | utf8 &= ~OPpTRANS_TO_UTF; | |
6115 | else | |
6116 | utf8 |= OPpTRANS_TO_UTF; | |
6117 | break; | |
6118 | default: | |
cea2e8a9 | 6119 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6120 | } |
6121 | } | |
395c3793 LW |
6122 | s++; |
6123 | } | |
a0ed51b3 | 6124 | o->op_private = del|squash|complement|utf8; |
79072805 | 6125 | |
3280af22 | 6126 | PL_lex_op = o; |
79072805 LW |
6127 | yylval.ival = OP_TRANS; |
6128 | return s; | |
6129 | } | |
6130 | ||
76e3520e | 6131 | STATIC char * |
cea2e8a9 | 6132 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6133 | { |
11343788 | 6134 | dTHR; |
79072805 LW |
6135 | SV *herewas; |
6136 | I32 op_type = OP_SCALAR; | |
6137 | I32 len; | |
6138 | SV *tmpstr; | |
6139 | char term; | |
6140 | register char *d; | |
fc36a67e | 6141 | register char *e; |
4633a7c4 | 6142 | char *peek; |
3280af22 | 6143 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6144 | |
6145 | s += 2; | |
3280af22 NIS |
6146 | d = PL_tokenbuf; |
6147 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6148 | if (!outer) |
79072805 | 6149 | *d++ = '\n'; |
4633a7c4 LW |
6150 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
6151 | if (*peek && strchr("`'\"",*peek)) { | |
6152 | s = peek; | |
79072805 | 6153 | term = *s++; |
3280af22 | 6154 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6155 | d += len; |
3280af22 | 6156 | if (s < PL_bufend) |
79072805 | 6157 | s++; |
79072805 LW |
6158 | } |
6159 | else { | |
6160 | if (*s == '\\') | |
6161 | s++, term = '\''; | |
6162 | else | |
6163 | term = '"'; | |
7e2040f0 | 6164 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6165 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6166 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6167 | if (d < e) |
6168 | *d++ = *s; | |
6169 | } | |
6170 | } | |
3280af22 | 6171 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6172 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6173 | *d++ = '\n'; |
6174 | *d = '\0'; | |
3280af22 | 6175 | len = d - PL_tokenbuf; |
6a27c188 | 6176 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6177 | d = strchr(s, '\r'); |
6178 | if (d) { | |
6179 | char *olds = s; | |
6180 | s = d; | |
3280af22 | 6181 | while (s < PL_bufend) { |
f63a84b2 LW |
6182 | if (*s == '\r') { |
6183 | *d++ = '\n'; | |
6184 | if (*++s == '\n') | |
6185 | s++; | |
6186 | } | |
6187 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6188 | *d++ = *s++; | |
6189 | s++; | |
6190 | } | |
6191 | else | |
6192 | *d++ = *s++; | |
6193 | } | |
6194 | *d = '\0'; | |
3280af22 NIS |
6195 | PL_bufend = d; |
6196 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6197 | s = olds; |
6198 | } | |
6199 | #endif | |
79072805 | 6200 | d = "\n"; |
3280af22 | 6201 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6202 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6203 | else |
79cb57f6 | 6204 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6205 | s += SvCUR(herewas); |
748a9306 | 6206 | |
8d6dde3e | 6207 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6208 | sv_upgrade(tmpstr, SVt_PVIV); |
6209 | if (term == '\'') { | |
79072805 | 6210 | op_type = OP_CONST; |
748a9306 LW |
6211 | SvIVX(tmpstr) = -1; |
6212 | } | |
6213 | else if (term == '`') { | |
79072805 | 6214 | op_type = OP_BACKTICK; |
748a9306 LW |
6215 | SvIVX(tmpstr) = '\\'; |
6216 | } | |
79072805 LW |
6217 | |
6218 | CLINE; | |
57843af0 | 6219 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6220 | PL_multi_open = PL_multi_close = '<'; |
6221 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6222 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6223 | char *bufptr = PL_sublex_info.super_bufptr; | |
6224 | char *bufend = PL_sublex_info.super_bufend; | |
6225 | char *olds = s - SvCUR(herewas); | |
6226 | s = strchr(bufptr, '\n'); | |
6227 | if (!s) | |
6228 | s = bufend; | |
6229 | d = s; | |
6230 | while (s < bufend && | |
6231 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6232 | if (*s++ == '\n') | |
57843af0 | 6233 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6234 | } |
6235 | if (s >= bufend) { | |
57843af0 | 6236 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6237 | missingterm(PL_tokenbuf); |
6238 | } | |
6239 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6240 | sv_setpvn(tmpstr,d+1,s-d); | |
6241 | s += len - 1; | |
6242 | sv_catpvn(herewas,s,bufend-s); | |
6243 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6244 | ||
6245 | s = olds; | |
6246 | goto retval; | |
6247 | } | |
6248 | else if (!outer) { | |
79072805 | 6249 | d = s; |
3280af22 NIS |
6250 | while (s < PL_bufend && |
6251 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6252 | if (*s++ == '\n') |
57843af0 | 6253 | CopLINE_inc(PL_curcop); |
79072805 | 6254 | } |
3280af22 | 6255 | if (s >= PL_bufend) { |
57843af0 | 6256 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6257 | missingterm(PL_tokenbuf); |
79072805 LW |
6258 | } |
6259 | sv_setpvn(tmpstr,d+1,s-d); | |
6260 | s += len - 1; | |
57843af0 | 6261 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6262 | |
3280af22 NIS |
6263 | sv_catpvn(herewas,s,PL_bufend-s); |
6264 | sv_setsv(PL_linestr,herewas); | |
6265 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6266 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6267 | } |
6268 | else | |
6269 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6270 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6271 | if (!outer || |
3280af22 | 6272 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6273 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6274 | missingterm(PL_tokenbuf); |
79072805 | 6275 | } |
57843af0 | 6276 | CopLINE_inc(PL_curcop); |
3280af22 | 6277 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6278 | #ifndef PERL_STRICT_CR |
3280af22 | 6279 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6280 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6281 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6282 | { |
3280af22 NIS |
6283 | PL_bufend[-2] = '\n'; |
6284 | PL_bufend--; | |
6285 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6286 | } |
3280af22 NIS |
6287 | else if (PL_bufend[-1] == '\r') |
6288 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6289 | } |
3280af22 NIS |
6290 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6291 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6292 | #endif |
3280af22 | 6293 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6294 | SV *sv = NEWSV(88,0); |
6295 | ||
93a17b20 | 6296 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6297 | sv_setsv(sv,PL_linestr); |
57843af0 | 6298 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6299 | } |
3280af22 NIS |
6300 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6301 | s = PL_bufend - 1; | |
79072805 | 6302 | *s = ' '; |
3280af22 NIS |
6303 | sv_catsv(PL_linestr,herewas); |
6304 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6305 | } |
6306 | else { | |
3280af22 NIS |
6307 | s = PL_bufend; |
6308 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6309 | } |
6310 | } | |
79072805 | 6311 | s++; |
0244c3a4 | 6312 | retval: |
57843af0 | 6313 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6314 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6315 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6316 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6317 | } |
8990e307 | 6318 | SvREFCNT_dec(herewas); |
3280af22 | 6319 | PL_lex_stuff = tmpstr; |
79072805 LW |
6320 | yylval.ival = op_type; |
6321 | return s; | |
6322 | } | |
6323 | ||
02aa26ce NT |
6324 | /* scan_inputsymbol |
6325 | takes: current position in input buffer | |
6326 | returns: new position in input buffer | |
6327 | side-effects: yylval and lex_op are set. | |
6328 | ||
6329 | This code handles: | |
6330 | ||
6331 | <> read from ARGV | |
6332 | <FH> read from filehandle | |
6333 | <pkg::FH> read from package qualified filehandle | |
6334 | <pkg'FH> read from package qualified filehandle | |
6335 | <$fh> read from filehandle in $fh | |
6336 | <*.h> filename glob | |
6337 | ||
6338 | */ | |
6339 | ||
76e3520e | 6340 | STATIC char * |
cea2e8a9 | 6341 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6342 | { |
02aa26ce | 6343 | register char *s = start; /* current position in buffer */ |
79072805 | 6344 | register char *d; |
fc36a67e | 6345 | register char *e; |
1b420867 | 6346 | char *end; |
79072805 LW |
6347 | I32 len; |
6348 | ||
3280af22 NIS |
6349 | d = PL_tokenbuf; /* start of temp holding space */ |
6350 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6351 | end = strchr(s, '\n'); |
6352 | if (!end) | |
6353 | end = PL_bufend; | |
6354 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6355 | |
6356 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6357 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6358 | */ |
6359 | ||
3280af22 | 6360 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6361 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6362 | if (s >= end) |
cea2e8a9 | 6363 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6364 | |
fc36a67e | 6365 | s++; |
02aa26ce NT |
6366 | |
6367 | /* check for <$fh> | |
6368 | Remember, only scalar variables are interpreted as filehandles by | |
6369 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6370 | treated as a glob() call. | |
6371 | This code makes use of the fact that except for the $ at the front, | |
6372 | a scalar variable and a filehandle look the same. | |
6373 | */ | |
4633a7c4 | 6374 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6375 | |
6376 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6377 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6378 | d++; |
02aa26ce NT |
6379 | |
6380 | /* If we've tried to read what we allow filehandles to look like, and | |
6381 | there's still text left, then it must be a glob() and not a getline. | |
6382 | Use scan_str to pull out the stuff between the <> and treat it | |
6383 | as nothing more than a string. | |
6384 | */ | |
6385 | ||
3280af22 | 6386 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6387 | yylval.ival = OP_GLOB; |
6388 | set_csh(); | |
09bef843 | 6389 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6390 | if (!s) |
cea2e8a9 | 6391 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6392 | return s; |
6393 | } | |
395c3793 | 6394 | else { |
02aa26ce | 6395 | /* we're in a filehandle read situation */ |
3280af22 | 6396 | d = PL_tokenbuf; |
02aa26ce NT |
6397 | |
6398 | /* turn <> into <ARGV> */ | |
79072805 LW |
6399 | if (!len) |
6400 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6401 | |
6402 | /* if <$fh>, create the ops to turn the variable into a | |
6403 | filehandle | |
6404 | */ | |
79072805 | 6405 | if (*d == '$') { |
a0d0e21e | 6406 | I32 tmp; |
02aa26ce NT |
6407 | |
6408 | /* try to find it in the pad for this block, otherwise find | |
6409 | add symbol table ops | |
6410 | */ | |
11343788 MB |
6411 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6412 | OP *o = newOP(OP_PADSV, 0); | |
6413 | o->op_targ = tmp; | |
f5284f61 | 6414 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6415 | } |
6416 | else { | |
6417 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6418 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6419 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6420 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6421 | } |
f5284f61 IZ |
6422 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6423 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6424 | yylval.ival = OP_NULL; |
6425 | } | |
02aa26ce NT |
6426 | |
6427 | /* If it's none of the above, it must be a literal filehandle | |
6428 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6429 | else { |
85e6fe83 | 6430 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6431 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6432 | yylval.ival = OP_NULL; |
6433 | } | |
6434 | } | |
02aa26ce | 6435 | |
79072805 LW |
6436 | return s; |
6437 | } | |
6438 | ||
02aa26ce NT |
6439 | |
6440 | /* scan_str | |
6441 | takes: start position in buffer | |
09bef843 SB |
6442 | keep_quoted preserve \ on the embedded delimiter(s) |
6443 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6444 | returns: position to continue reading from buffer |
6445 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6446 | updates the read buffer. | |
6447 | ||
6448 | This subroutine pulls a string out of the input. It is called for: | |
6449 | q single quotes q(literal text) | |
6450 | ' single quotes 'literal text' | |
6451 | qq double quotes qq(interpolate $here please) | |
6452 | " double quotes "interpolate $here please" | |
6453 | qx backticks qx(/bin/ls -l) | |
6454 | ` backticks `/bin/ls -l` | |
6455 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6456 | m// regexp match m/this/ | |
6457 | s/// regexp substitute s/this/that/ | |
6458 | tr/// string transliterate tr/this/that/ | |
6459 | y/// string transliterate y/this/that/ | |
6460 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6461 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6462 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6463 | ||
6464 | In most of these cases (all but <>, patterns and transliterate) | |
6465 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6466 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6467 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6468 | calls scan_str(). | |
6469 | ||
6470 | It skips whitespace before the string starts, and treats the first | |
6471 | character as the delimiter. If the delimiter is one of ([{< then | |
6472 | the corresponding "close" character )]}> is used as the closing | |
6473 | delimiter. It allows quoting of delimiters, and if the string has | |
6474 | balanced delimiters ([{<>}]) it allows nesting. | |
6475 | ||
6476 | The lexer always reads these strings into lex_stuff, except in the | |
6477 | case of the operators which take *two* arguments (s/// and tr///) | |
6478 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6479 | arg to s or tr) and if so puts the string into lex_repl. | |
6480 | ||
6481 | */ | |
6482 | ||
76e3520e | 6483 | STATIC char * |
09bef843 | 6484 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6485 | { |
11343788 | 6486 | dTHR; |
02aa26ce NT |
6487 | SV *sv; /* scalar value: string */ |
6488 | char *tmps; /* temp string, used for delimiter matching */ | |
6489 | register char *s = start; /* current position in the buffer */ | |
6490 | register char term; /* terminating character */ | |
6491 | register char *to; /* current position in the sv's data */ | |
6492 | I32 brackets = 1; /* bracket nesting level */ | |
b1c7b182 | 6493 | bool has_utf = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6494 | |
6495 | /* skip space before the delimiter */ | |
fb73857a | 6496 | if (isSPACE(*s)) |
6497 | s = skipspace(s); | |
02aa26ce NT |
6498 | |
6499 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6500 | CLINE; |
02aa26ce NT |
6501 | |
6502 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6503 | term = *s; |
b1c7b182 GS |
6504 | if ((term & 0x80) && UTF) |
6505 | has_utf = TRUE; | |
6506 | ||
02aa26ce | 6507 | /* mark where we are */ |
57843af0 | 6508 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6509 | PL_multi_open = term; |
02aa26ce NT |
6510 | |
6511 | /* find corresponding closing delimiter */ | |
93a17b20 | 6512 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6513 | term = tmps[5]; |
3280af22 | 6514 | PL_multi_close = term; |
79072805 | 6515 | |
02aa26ce | 6516 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6517 | assuming. 79 is the SV's initial length. What a random number. */ |
6518 | sv = NEWSV(87,79); | |
ed6116ce LW |
6519 | sv_upgrade(sv, SVt_PVIV); |
6520 | SvIVX(sv) = term; | |
a0d0e21e | 6521 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6522 | |
6523 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6524 | if (keep_delims) |
6525 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6526 | s++; |
6527 | for (;;) { | |
02aa26ce | 6528 | /* extend sv if need be */ |
3280af22 | 6529 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6530 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6531 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6532 | |
02aa26ce | 6533 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6534 | if (PL_multi_open == PL_multi_close) { |
6535 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6536 | /* embedded newlines increment the current line number */ |
3280af22 | 6537 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6538 | CopLINE_inc(PL_curcop); |
02aa26ce | 6539 | /* handle quoted delimiters */ |
3280af22 | 6540 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6541 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6542 | s++; |
02aa26ce | 6543 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6544 | else |
6545 | *to++ = *s++; | |
6546 | } | |
02aa26ce NT |
6547 | /* terminate when run out of buffer (the for() condition), or |
6548 | have found the terminator */ | |
93a17b20 LW |
6549 | else if (*s == term) |
6550 | break; | |
b1c7b182 GS |
6551 | else if (!has_utf && (*s & 0x80) && UTF) |
6552 | has_utf = TRUE; | |
93a17b20 LW |
6553 | *to = *s; |
6554 | } | |
6555 | } | |
02aa26ce NT |
6556 | |
6557 | /* if the terminator isn't the same as the start character (e.g., | |
6558 | matched brackets), we have to allow more in the quoting, and | |
6559 | be prepared for nested brackets. | |
6560 | */ | |
93a17b20 | 6561 | else { |
02aa26ce | 6562 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6563 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6564 | /* embedded newlines increment the line count */ |
3280af22 | 6565 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6566 | CopLINE_inc(PL_curcop); |
02aa26ce | 6567 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6568 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6569 | if (!keep_quoted && |
6570 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6571 | s++; |
6572 | else | |
6573 | *to++ = *s++; | |
6574 | } | |
02aa26ce | 6575 | /* allow nested opens and closes */ |
3280af22 | 6576 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6577 | break; |
3280af22 | 6578 | else if (*s == PL_multi_open) |
93a17b20 | 6579 | brackets++; |
b1c7b182 GS |
6580 | else if (!has_utf && (*s & 0x80) && UTF) |
6581 | has_utf = TRUE; | |
93a17b20 LW |
6582 | *to = *s; |
6583 | } | |
6584 | } | |
02aa26ce | 6585 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6586 | *to = '\0'; |
463ee0b2 | 6587 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6588 | |
02aa26ce NT |
6589 | /* |
6590 | * this next chunk reads more into the buffer if we're not done yet | |
6591 | */ | |
6592 | ||
b1c7b182 GS |
6593 | if (s < PL_bufend) |
6594 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6595 | |
6a27c188 | 6596 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6597 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6598 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6599 | (to[-2] == '\n' && to[-1] == '\r')) | |
6600 | { | |
f63a84b2 LW |
6601 | to[-2] = '\n'; |
6602 | to--; | |
6603 | SvCUR_set(sv, to - SvPVX(sv)); | |
6604 | } | |
6605 | else if (to[-1] == '\r') | |
6606 | to[-1] = '\n'; | |
6607 | } | |
6608 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6609 | to[-1] = '\n'; | |
6610 | #endif | |
6611 | ||
02aa26ce NT |
6612 | /* if we're out of file, or a read fails, bail and reset the current |
6613 | line marker so we can report where the unterminated string began | |
6614 | */ | |
3280af22 NIS |
6615 | if (!PL_rsfp || |
6616 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6617 | sv_free(sv); |
57843af0 | 6618 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6619 | return Nullch; |
6620 | } | |
02aa26ce | 6621 | /* we read a line, so increment our line counter */ |
57843af0 | 6622 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6623 | |
02aa26ce | 6624 | /* update debugger info */ |
3280af22 | 6625 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6626 | SV *sv = NEWSV(88,0); |
6627 | ||
93a17b20 | 6628 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6629 | sv_setsv(sv,PL_linestr); |
57843af0 | 6630 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6631 | } |
a0ed51b3 | 6632 | |
3280af22 NIS |
6633 | /* having changed the buffer, we must update PL_bufend */ |
6634 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6635 | } |
02aa26ce NT |
6636 | |
6637 | /* at this point, we have successfully read the delimited string */ | |
6638 | ||
09bef843 SB |
6639 | if (keep_delims) |
6640 | sv_catpvn(sv, s, 1); | |
b1c7b182 GS |
6641 | if (has_utf) |
6642 | SvUTF8_on(sv); | |
57843af0 | 6643 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6644 | s++; |
02aa26ce NT |
6645 | |
6646 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6647 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6648 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6649 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6650 | } |
02aa26ce NT |
6651 | |
6652 | /* decide whether this is the first or second quoted string we've read | |
6653 | for this op | |
6654 | */ | |
6655 | ||
3280af22 NIS |
6656 | if (PL_lex_stuff) |
6657 | PL_lex_repl = sv; | |
79072805 | 6658 | else |
3280af22 | 6659 | PL_lex_stuff = sv; |
378cc40b LW |
6660 | return s; |
6661 | } | |
6662 | ||
02aa26ce NT |
6663 | /* |
6664 | scan_num | |
6665 | takes: pointer to position in buffer | |
6666 | returns: pointer to new position in buffer | |
6667 | side-effects: builds ops for the constant in yylval.op | |
6668 | ||
6669 | Read a number in any of the formats that Perl accepts: | |
6670 | ||
4f19785b | 6671 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6672 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6673 | ||
6674 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6675 | underbars before a decimal point must be at three digit intervals. | |
6676 | ||
3280af22 | 6677 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6678 | thing it reads. |
6679 | ||
6680 | If it reads a number without a decimal point or an exponent, it will | |
6681 | try converting the number to an integer and see if it can do so | |
6682 | without loss of precision. | |
6683 | */ | |
6684 | ||
378cc40b | 6685 | char * |
864dbfa3 | 6686 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6687 | { |
02aa26ce NT |
6688 | register char *s = start; /* current position in buffer */ |
6689 | register char *d; /* destination in temp buffer */ | |
6690 | register char *e; /* end of temp buffer */ | |
65202027 | 6691 | NV value; /* number read, as a double */ |
a7cb1f99 | 6692 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6693 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6694 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6695 | static char number_too_long[] = "Number too long"; |
378cc40b | 6696 | |
02aa26ce NT |
6697 | /* We use the first character to decide what type of number this is */ |
6698 | ||
378cc40b | 6699 | switch (*s) { |
79072805 | 6700 | default: |
cea2e8a9 | 6701 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6702 | |
6703 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6704 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6705 | case '0': |
6706 | { | |
02aa26ce NT |
6707 | /* variables: |
6708 | u holds the "number so far" | |
4f19785b WSI |
6709 | shift the power of 2 of the base |
6710 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6711 | overflowed was the number more than we can hold? |
6712 | ||
6713 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6714 | we in octal/hex/binary?" indicator to disallow hex characters |
6715 | when in octal mode. | |
02aa26ce | 6716 | */ |
f248d071 | 6717 | dTHR; |
9e24b6e2 JH |
6718 | NV n = 0.0; |
6719 | UV u = 0; | |
79072805 | 6720 | I32 shift; |
9e24b6e2 JH |
6721 | bool overflowed = FALSE; |
6722 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6723 | static char* bases[5] = { "", "binary", "", "octal", | |
6724 | "hexadecimal" }; | |
6725 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6726 | "Hexadecimal" }; | |
6727 | static char *maxima[5] = { "", | |
6728 | "0b11111111111111111111111111111111", | |
6729 | "", | |
893fe2c2 | 6730 | "037777777777", |
9e24b6e2 JH |
6731 | "0xffffffff" }; |
6732 | char *base, *Base, *max; | |
378cc40b | 6733 | |
02aa26ce | 6734 | /* check for hex */ |
378cc40b LW |
6735 | if (s[1] == 'x') { |
6736 | shift = 4; | |
6737 | s += 2; | |
4f19785b WSI |
6738 | } else if (s[1] == 'b') { |
6739 | shift = 1; | |
6740 | s += 2; | |
378cc40b | 6741 | } |
02aa26ce | 6742 | /* check for a decimal in disguise */ |
b78218b7 | 6743 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6744 | goto decimal; |
02aa26ce | 6745 | /* so it must be octal */ |
378cc40b LW |
6746 | else |
6747 | shift = 3; | |
9e24b6e2 JH |
6748 | |
6749 | base = bases[shift]; | |
6750 | Base = Bases[shift]; | |
6751 | max = maxima[shift]; | |
02aa26ce | 6752 | |
4f19785b | 6753 | /* read the rest of the number */ |
378cc40b | 6754 | for (;;) { |
9e24b6e2 | 6755 | /* x is used in the overflow test, |
893fe2c2 | 6756 | b is the digit we're adding on. */ |
9e24b6e2 | 6757 | UV x, b; |
55497cff | 6758 | |
378cc40b | 6759 | switch (*s) { |
02aa26ce NT |
6760 | |
6761 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6762 | default: |
6763 | goto out; | |
02aa26ce NT |
6764 | |
6765 | /* _ are ignored */ | |
de3bb511 LW |
6766 | case '_': |
6767 | s++; | |
6768 | break; | |
02aa26ce NT |
6769 | |
6770 | /* 8 and 9 are not octal */ | |
378cc40b | 6771 | case '8': case '9': |
4f19785b | 6772 | if (shift == 3) |
cea2e8a9 | 6773 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6774 | /* FALL THROUGH */ |
02aa26ce NT |
6775 | |
6776 | /* octal digits */ | |
4f19785b | 6777 | case '2': case '3': case '4': |
378cc40b | 6778 | case '5': case '6': case '7': |
4f19785b | 6779 | if (shift == 1) |
cea2e8a9 | 6780 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6781 | /* FALL THROUGH */ |
6782 | ||
6783 | case '0': case '1': | |
02aa26ce | 6784 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6785 | goto digit; |
02aa26ce NT |
6786 | |
6787 | /* hex digits */ | |
378cc40b LW |
6788 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6789 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6790 | /* make sure they said 0x */ |
378cc40b LW |
6791 | if (shift != 4) |
6792 | goto out; | |
55497cff | 6793 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6794 | |
6795 | /* Prepare to put the digit we have onto the end | |
6796 | of the number so far. We check for overflows. | |
6797 | */ | |
6798 | ||
55497cff | 6799 | digit: |
9e24b6e2 JH |
6800 | if (!overflowed) { |
6801 | x = u << shift; /* make room for the digit */ | |
6802 | ||
6803 | if ((x >> shift) != u | |
6804 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6805 | dTHR; | |
6806 | overflowed = TRUE; | |
6807 | n = (NV) u; | |
767a6a26 PM |
6808 | if (ckWARN_d(WARN_OVERFLOW)) |
6809 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6810 | "Integer overflow in %s number", |
6811 | base); | |
6812 | } else | |
6813 | u = x | b; /* add the digit to the end */ | |
6814 | } | |
6815 | if (overflowed) { | |
6816 | n *= nvshift[shift]; | |
6817 | /* If an NV has not enough bits in its | |
6818 | * mantissa to represent an UV this summing of | |
6819 | * small low-order numbers is a waste of time | |
6820 | * (because the NV cannot preserve the | |
6821 | * low-order bits anyway): we could just | |
6822 | * remember when did we overflow and in the | |
6823 | * end just multiply n by the right | |
6824 | * amount. */ | |
6825 | n += (NV) b; | |
55497cff | 6826 | } |
378cc40b LW |
6827 | break; |
6828 | } | |
6829 | } | |
02aa26ce NT |
6830 | |
6831 | /* if we get here, we had success: make a scalar value from | |
6832 | the number. | |
6833 | */ | |
378cc40b | 6834 | out: |
79072805 | 6835 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6836 | if (overflowed) { |
6837 | dTHR; | |
767a6a26 PM |
6838 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6839 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6840 | "%s number > %s non-portable", |
6841 | Base, max); | |
6842 | sv_setnv(sv, n); | |
6843 | } | |
6844 | else { | |
15041a67 | 6845 | #if UVSIZE > 4 |
9e24b6e2 | 6846 | dTHR; |
767a6a26 PM |
6847 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6848 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6849 | "%s number > %s non-portable", |
6850 | Base, max); | |
2cc4c2dc | 6851 | #endif |
9e24b6e2 JH |
6852 | sv_setuv(sv, u); |
6853 | } | |
2cc4c2dc | 6854 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6855 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6856 | } |
6857 | break; | |
02aa26ce NT |
6858 | |
6859 | /* | |
6860 | handle decimal numbers. | |
6861 | we're also sent here when we read a 0 as the first digit | |
6862 | */ | |
378cc40b LW |
6863 | case '1': case '2': case '3': case '4': case '5': |
6864 | case '6': case '7': case '8': case '9': case '.': | |
6865 | decimal: | |
3280af22 NIS |
6866 | d = PL_tokenbuf; |
6867 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6868 | floatit = FALSE; |
02aa26ce NT |
6869 | |
6870 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6871 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6872 | /* skip underscores, checking for misplaced ones |
6873 | if -w is on | |
6874 | */ | |
93a17b20 | 6875 | if (*s == '_') { |
d008e5eb | 6876 | dTHR; /* only for ckWARN */ |
599cee73 | 6877 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6878 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6879 | lastub = ++s; |
6880 | } | |
fc36a67e | 6881 | else { |
02aa26ce | 6882 | /* check for end of fixed-length buffer */ |
fc36a67e | 6883 | if (d >= e) |
cea2e8a9 | 6884 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6885 | /* if we're ok, copy the character */ |
378cc40b | 6886 | *d++ = *s++; |
fc36a67e | 6887 | } |
378cc40b | 6888 | } |
02aa26ce NT |
6889 | |
6890 | /* final misplaced underbar check */ | |
d008e5eb GS |
6891 | if (lastub && s - lastub != 3) { |
6892 | dTHR; | |
6893 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6894 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6895 | } |
02aa26ce NT |
6896 | |
6897 | /* read a decimal portion if there is one. avoid | |
6898 | 3..5 being interpreted as the number 3. followed | |
6899 | by .5 | |
6900 | */ | |
2f3197b3 | 6901 | if (*s == '.' && s[1] != '.') { |
79072805 | 6902 | floatit = TRUE; |
378cc40b | 6903 | *d++ = *s++; |
02aa26ce NT |
6904 | |
6905 | /* copy, ignoring underbars, until we run out of | |
6906 | digits. Note: no misplaced underbar checks! | |
6907 | */ | |
fc36a67e | 6908 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6909 | /* fixed length buffer check */ |
fc36a67e | 6910 | if (d >= e) |
cea2e8a9 | 6911 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6912 | if (*s != '_') |
6913 | *d++ = *s; | |
378cc40b | 6914 | } |
dd629d5b GS |
6915 | if (*s == '.' && isDIGIT(s[1])) { |
6916 | /* oops, it's really a v-string, but without the "v" */ | |
6917 | s = start - 1; | |
6918 | goto vstring; | |
6919 | } | |
378cc40b | 6920 | } |
02aa26ce NT |
6921 | |
6922 | /* read exponent part, if present */ | |
93a17b20 | 6923 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6924 | floatit = TRUE; |
6925 | s++; | |
02aa26ce NT |
6926 | |
6927 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6928 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6929 | |
6930 | /* allow positive or negative exponent */ | |
378cc40b LW |
6931 | if (*s == '+' || *s == '-') |
6932 | *d++ = *s++; | |
02aa26ce NT |
6933 | |
6934 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6935 | while (isDIGIT(*s)) { |
6936 | if (d >= e) | |
cea2e8a9 | 6937 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6938 | *d++ = *s++; |
fc36a67e | 6939 | } |
378cc40b | 6940 | } |
02aa26ce NT |
6941 | |
6942 | /* terminate the string */ | |
378cc40b | 6943 | *d = '\0'; |
02aa26ce NT |
6944 | |
6945 | /* make an sv from the string */ | |
79072805 | 6946 | sv = NEWSV(92,0); |
097ee67d | 6947 | |
65f19062 GS |
6948 | /* unfortunately this monster needs to be on one line or |
6949 | makedepend will be confused. */ | |
6950 | #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 |
6951 | |
6952 | /* | |
6953 | No working strto[u]l[l]. Since atoi() doesn't do range checks, | |
6954 | we need to do this the hard way. | |
6955 | */ | |
6956 | ||
097ee67d | 6957 | value = Atof(PL_tokenbuf); |
02aa26ce NT |
6958 | |
6959 | /* | |
6960 | See if we can make do with an integer value without loss of | |
6961 | precision. We use I_V to cast to an int, because some | |
6962 | compilers have issues. Then we try casting it back and see | |
6963 | if it was the same. We only do this if we know we | |
6964 | specifically read an integer. | |
6965 | ||
6966 | Note: if floatit is true, then we don't need to do the | |
6967 | conversion at all. | |
6968 | */ | |
e312add1 GS |
6969 | { |
6970 | UV tryuv = U_V(value); | |
6971 | if (!floatit && (NV)tryuv == value) { | |
6972 | if (tryuv <= IV_MAX) | |
6973 | sv_setiv(sv, (IV)tryuv); | |
6974 | else | |
6975 | sv_setuv(sv, tryuv); | |
6976 | } | |
5a89daa8 | 6977 | else |
e312add1 | 6978 | sv_setnv(sv, value); |
5a89daa8 | 6979 | } |
0b7fceb9 MU |
6980 | #else |
6981 | /* | |
6982 | strtol/strtoll sets errno to ERANGE if the number is too big | |
6983 | for an integer. We try to do an integer conversion first | |
6984 | if no characters indicating "float" have been found. | |
6985 | */ | |
6986 | ||
6987 | if (!floatit) { | |
0b7fceb9 MU |
6988 | IV iv; |
6989 | UV uv; | |
6990 | errno = 0; | |
c239479b | 6991 | if (*PL_tokenbuf == '-') |
96989be3 | 6992 | iv = Strtol(PL_tokenbuf, (char**)NULL, 10); |
c239479b | 6993 | else |
96989be3 | 6994 | uv = Strtoul(PL_tokenbuf, (char**)NULL, 10); |
55eb892c | 6995 | if (errno) |
0b7fceb9 MU |
6996 | floatit = TRUE; /* probably just too large */ |
6997 | else if (*PL_tokenbuf == '-') | |
6998 | sv_setiv(sv, iv); | |
6999 | else | |
c239479b | 7000 | sv_setuv(sv, uv); |
0b7fceb9 MU |
7001 | } |
7002 | if (floatit) { | |
55eb892c | 7003 | value = Atof(PL_tokenbuf); |
96989be3 GS |
7004 | sv_setnv(sv, value); |
7005 | } | |
0b7fceb9 | 7006 | #endif |
b8403495 JH |
7007 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7008 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 7009 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7010 | (floatit ? "float" : "integer"), |
7011 | sv, Nullsv, NULL); | |
378cc40b | 7012 | break; |
0b7fceb9 | 7013 | |
e312add1 | 7014 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7015 | case 'v': |
dd629d5b | 7016 | vstring: |
a7cb1f99 | 7017 | { |
a7cb1f99 GS |
7018 | char *pos = s; |
7019 | pos++; | |
dd629d5b | 7020 | while (isDIGIT(*pos) || *pos == '_') |
a7cb1f99 | 7021 | pos++; |
e526c9e6 | 7022 | if (!isALPHA(*pos)) { |
f83ee824 | 7023 | UV rev; |
560a288e | 7024 | U8 tmpbuf[UTF8_MAXLEN]; |
a7cb1f99 | 7025 | U8 *tmpend; |
3818b22b | 7026 | bool utf8 = FALSE; |
a7cb1f99 GS |
7027 | s++; /* get past 'v' */ |
7028 | ||
7029 | sv = NEWSV(92,5); | |
a7cb1f99 GS |
7030 | sv_setpvn(sv, "", 0); |
7031 | ||
e526c9e6 | 7032 | for (;;) { |
3cb0bbe5 GS |
7033 | if (*s == '0' && isDIGIT(s[1])) |
7034 | yyerror("Octal number in vector unsupported"); | |
dd629d5b GS |
7035 | rev = 0; |
7036 | { | |
7037 | /* this is atoi() that tolerates underscores */ | |
7038 | char *end = pos; | |
7039 | UV mult = 1; | |
7040 | while (--end >= s) { | |
7041 | UV orev; | |
7042 | if (*end == '_') | |
7043 | continue; | |
7044 | orev = rev; | |
7045 | rev += (*end - '0') * mult; | |
7046 | mult *= 10; | |
7047 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
7048 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
7049 | "Integer overflow in decimal number"); | |
7050 | } | |
7051 | } | |
e526c9e6 GS |
7052 | tmpend = uv_to_utf8(tmpbuf, rev); |
7053 | utf8 = utf8 || rev > 127; | |
7054 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
7055 | if (*pos == '.' && isDIGIT(pos[1])) | |
7056 | s = ++pos; | |
3818b22b | 7057 | else { |
e526c9e6 GS |
7058 | s = pos; |
7059 | break; | |
3818b22b | 7060 | } |
dd629d5b | 7061 | while (isDIGIT(*pos) || *pos == '_') |
e526c9e6 GS |
7062 | pos++; |
7063 | } | |
a7cb1f99 GS |
7064 | |
7065 | SvPOK_on(sv); | |
a7cb1f99 | 7066 | SvREADONLY_on(sv); |
560a288e | 7067 | if (utf8) { |
3818b22b | 7068 | SvUTF8_on(sv); |
560a288e GS |
7069 | sv_utf8_downgrade(sv, TRUE); |
7070 | } | |
a7cb1f99 GS |
7071 | } |
7072 | } | |
7073 | break; | |
79072805 | 7074 | } |
a687059c | 7075 | |
02aa26ce NT |
7076 | /* make the op for the constant and return */ |
7077 | ||
a7cb1f99 GS |
7078 | if (sv) |
7079 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
7080 | else | |
7081 | yylval.opval = Nullop; | |
a687059c | 7082 | |
378cc40b LW |
7083 | return s; |
7084 | } | |
7085 | ||
76e3520e | 7086 | STATIC char * |
cea2e8a9 | 7087 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7088 | { |
11343788 | 7089 | dTHR; |
79072805 | 7090 | register char *eol; |
378cc40b | 7091 | register char *t; |
79cb57f6 | 7092 | SV *stuff = newSVpvn("",0); |
79072805 | 7093 | bool needargs = FALSE; |
378cc40b | 7094 | |
79072805 | 7095 | while (!needargs) { |
85e6fe83 | 7096 | if (*s == '.' || *s == '}') { |
79072805 | 7097 | /*SUPPRESS 530*/ |
51882d45 GS |
7098 | #ifdef PERL_STRICT_CR |
7099 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
7100 | #else | |
7101 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
7102 | #endif | |
6a65c6a0 | 7103 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
7104 | break; |
7105 | } | |
3280af22 | 7106 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 7107 | eol = strchr(s,'\n'); |
0f85fab0 | 7108 | if (!eol++) |
3280af22 | 7109 | eol = PL_bufend; |
0f85fab0 LW |
7110 | } |
7111 | else | |
3280af22 | 7112 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7113 | if (*s != '#') { |
a0d0e21e LW |
7114 | for (t = s; t < eol; t++) { |
7115 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7116 | needargs = FALSE; | |
7117 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7118 | } |
a0d0e21e LW |
7119 | if (*t == '@' || *t == '^') |
7120 | needargs = TRUE; | |
378cc40b | 7121 | } |
a0d0e21e | 7122 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
7123 | #ifndef PERL_STRICT_CR |
7124 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
7125 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7126 | end[-2] = '\n'; | |
7127 | end[-1] = '\0'; | |
7128 | SvCUR(stuff)--; | |
7129 | } | |
7130 | #endif | |
79072805 LW |
7131 | } |
7132 | s = eol; | |
3280af22 NIS |
7133 | if (PL_rsfp) { |
7134 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7135 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7136 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 7137 | if (!s) { |
3280af22 | 7138 | s = PL_bufptr; |
79072805 | 7139 | yyerror("Format not terminated"); |
378cc40b LW |
7140 | break; |
7141 | } | |
378cc40b | 7142 | } |
463ee0b2 | 7143 | incline(s); |
79072805 | 7144 | } |
a0d0e21e LW |
7145 | enough: |
7146 | if (SvCUR(stuff)) { | |
3280af22 | 7147 | PL_expect = XTERM; |
79072805 | 7148 | if (needargs) { |
3280af22 NIS |
7149 | PL_lex_state = LEX_NORMAL; |
7150 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7151 | force_next(','); |
7152 | } | |
a0d0e21e | 7153 | else |
3280af22 NIS |
7154 | PL_lex_state = LEX_FORMLINE; |
7155 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7156 | force_next(THING); |
3280af22 | 7157 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7158 | force_next(LSTOP); |
378cc40b | 7159 | } |
79072805 | 7160 | else { |
8990e307 | 7161 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7162 | PL_lex_formbrack = 0; |
7163 | PL_bufptr = s; | |
79072805 LW |
7164 | } |
7165 | return s; | |
378cc40b | 7166 | } |
a687059c | 7167 | |
76e3520e | 7168 | STATIC void |
cea2e8a9 | 7169 | S_set_csh(pTHX) |
a687059c | 7170 | { |
ae986130 | 7171 | #ifdef CSH |
3280af22 NIS |
7172 | if (!PL_cshlen) |
7173 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7174 | #endif |
a687059c | 7175 | } |
463ee0b2 | 7176 | |
ba6d6ac9 | 7177 | I32 |
864dbfa3 | 7178 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7179 | { |
11343788 | 7180 | dTHR; |
3280af22 NIS |
7181 | I32 oldsavestack_ix = PL_savestack_ix; |
7182 | CV* outsidecv = PL_compcv; | |
748a9306 | 7183 | AV* comppadlist; |
8990e307 | 7184 | |
3280af22 NIS |
7185 | if (PL_compcv) { |
7186 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7187 | } |
7766f137 | 7188 | SAVEI32(PL_subline); |
3280af22 NIS |
7189 | save_item(PL_subname); |
7190 | SAVEI32(PL_padix); | |
354992b1 | 7191 | SAVECOMPPAD(); |
3280af22 NIS |
7192 | SAVESPTR(PL_comppad_name); |
7193 | SAVESPTR(PL_compcv); | |
7194 | SAVEI32(PL_comppad_name_fill); | |
7195 | SAVEI32(PL_min_intro_pending); | |
7196 | SAVEI32(PL_max_intro_pending); | |
7197 | SAVEI32(PL_pad_reset_pending); | |
7198 | ||
7199 | PL_compcv = (CV*)NEWSV(1104,0); | |
7200 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7201 | CvFLAGS(PL_compcv) |= flags; | |
7202 | ||
7203 | PL_comppad = newAV(); | |
7204 | av_push(PL_comppad, Nullsv); | |
7205 | PL_curpad = AvARRAY(PL_comppad); | |
7206 | PL_comppad_name = newAV(); | |
7207 | PL_comppad_name_fill = 0; | |
7208 | PL_min_intro_pending = 0; | |
7209 | PL_padix = 0; | |
57843af0 | 7210 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7211 | #ifdef USE_THREADS |
79cb57f6 | 7212 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7213 | PL_curpad[0] = (SV*)newAV(); |
7214 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7215 | #endif /* USE_THREADS */ |
748a9306 LW |
7216 | |
7217 | comppadlist = newAV(); | |
7218 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7219 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7220 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7221 | |
3280af22 NIS |
7222 | CvPADLIST(PL_compcv) = comppadlist; |
7223 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7224 | #ifdef USE_THREADS |
533c011a NIS |
7225 | CvOWNER(PL_compcv) = 0; |
7226 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7227 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7228 | #endif /* USE_THREADS */ |
748a9306 | 7229 | |
8990e307 LW |
7230 | return oldsavestack_ix; |
7231 | } | |
7232 | ||
7233 | int | |
864dbfa3 | 7234 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7235 | { |
11343788 | 7236 | dTHR; |
faef0170 | 7237 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7238 | yyerror(s); |
faef0170 | 7239 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7240 | return 0; |
8990e307 LW |
7241 | } |
7242 | ||
7243 | int | |
864dbfa3 | 7244 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7245 | { |
11343788 | 7246 | dTHR; |
68dc0745 | 7247 | char *where = NULL; |
7248 | char *context = NULL; | |
7249 | int contlen = -1; | |
46fc3d4c | 7250 | SV *msg; |
463ee0b2 | 7251 | |
3280af22 | 7252 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7253 | where = "at EOF"; |
3280af22 NIS |
7254 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7255 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7256 | while (isSPACE(*PL_oldoldbufptr)) | |
7257 | PL_oldoldbufptr++; | |
7258 | context = PL_oldoldbufptr; | |
7259 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7260 | } |
3280af22 NIS |
7261 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7262 | PL_oldbufptr != PL_bufptr) { | |
7263 | while (isSPACE(*PL_oldbufptr)) | |
7264 | PL_oldbufptr++; | |
7265 | context = PL_oldbufptr; | |
7266 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7267 | } |
7268 | else if (yychar > 255) | |
68dc0745 | 7269 | where = "next token ???"; |
cdfb297e GS |
7270 | #ifdef USE_PURE_BISON |
7271 | /* GNU Bison sets the value -2 */ | |
7272 | else if (yychar == -2) { | |
7273 | #else | |
463ee0b2 | 7274 | else if ((yychar & 127) == 127) { |
cdfb297e | 7275 | #endif |
3280af22 NIS |
7276 | if (PL_lex_state == LEX_NORMAL || |
7277 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7278 | where = "at end of line"; |
3280af22 | 7279 | else if (PL_lex_inpat) |
68dc0745 | 7280 | where = "within pattern"; |
463ee0b2 | 7281 | else |
68dc0745 | 7282 | where = "within string"; |
463ee0b2 | 7283 | } |
46fc3d4c | 7284 | else { |
79cb57f6 | 7285 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7286 | if (yychar < 32) |
cea2e8a9 | 7287 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7288 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7289 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7290 | else |
cea2e8a9 | 7291 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7292 | where = SvPVX(where_sv); |
463ee0b2 | 7293 | } |
46fc3d4c | 7294 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7295 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7296 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7297 | if (context) |
cea2e8a9 | 7298 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7299 | else |
cea2e8a9 | 7300 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7301 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7302 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7303 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7304 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7305 | PL_multi_end = 0; |
a0d0e21e | 7306 | } |
faef0170 | 7307 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7308 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7309 | else |
5a844595 | 7310 | qerror(msg); |
c7d6bfb2 GS |
7311 | if (PL_error_count >= 10) { |
7312 | if (PL_in_eval && SvCUR(ERRSV)) | |
7313 | Perl_croak(aTHX_ "%_%s has too many errors.\n", | |
7314 | ERRSV, CopFILE(PL_curcop)); | |
7315 | else | |
7316 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
7317 | CopFILE(PL_curcop)); | |
7318 | } | |
3280af22 NIS |
7319 | PL_in_my = 0; |
7320 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7321 | return 0; |
7322 | } | |
4e35701f | 7323 | |
161b471a | 7324 | |
51371543 | 7325 | #ifdef PERL_OBJECT |
51371543 GS |
7326 | #include "XSUB.h" |
7327 | #endif | |
7328 | ||
ffb4593c NT |
7329 | /* |
7330 | * restore_rsfp | |
7331 | * Restore a source filter. | |
7332 | */ | |
7333 | ||
51371543 GS |
7334 | static void |
7335 | restore_rsfp(pTHXo_ void *f) | |
7336 | { | |
7337 | PerlIO *fp = (PerlIO*)f; | |
7338 | ||
7339 | if (PL_rsfp == PerlIO_stdin()) | |
7340 | PerlIO_clearerr(PL_rsfp); | |
7341 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7342 | PerlIO_close(PL_rsfp); | |
7343 | PL_rsfp = fp; | |
7344 | } |