Mercurial > hg > xemacs-beta
annotate src/lread.c @ 5762:427a72c6ee17
Eliminate several compiler (clang) warnings.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Sun, 15 Sep 2013 23:47:37 +0900 |
| parents | febc025c4e0c |
| children | a216b3c2b09e |
| rev | line source |
|---|---|
| 428 | 1 /* Lisp parsing and input streams. |
| 2 Copyright (C) 1985-1989, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Tinker Systems. | |
|
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4 Copyright (C) 1996, 2001, 2002, 2003, 2010 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
|
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8 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 9 under the terms of the GNU General Public License as published by the |
|
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10 Free Software Foundation, either version 3 of the License, or (at your |
|
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11 option) any later version. |
| 428 | 12 |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
|
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19 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 20 |
| 21 /* Synched up with: Mule 2.0, FSF 19.30. */ | |
| 22 | |
| 23 /* This file has been Mule-ized. */ | |
| 24 | |
| 25 #include <config.h> | |
| 26 #include "lisp.h" | |
| 27 | |
| 28 #include "buffer.h" | |
| 29 #include "bytecode.h" | |
| 30 #include "elhash.h" | |
| 1292 | 31 #include "file-coding.h" |
| 428 | 32 #include "lstream.h" |
| 33 #include "opaque.h" | |
| 1292 | 34 #include "profile.h" |
| 3439 | 35 #include "charset.h" /* For Funicode_to_char. */ |
| 428 | 36 |
| 37 #include "sysfile.h" | |
| 38 #include "sysfloat.h" | |
| 771 | 39 #ifdef WIN32_NATIVE |
| 40 #include "syswindows.h" | |
| 41 #endif | |
| 428 | 42 |
| 43 Lisp_Object Qread_char, Qstandard_input; | |
| 44 Lisp_Object Qvariable_documentation; | |
| 45 #define LISP_BACKQUOTES | |
| 46 #ifdef LISP_BACKQUOTES | |
| 47 /* | |
| 48 Nonzero means inside a new-style backquote | |
| 49 with no surrounding parentheses. | |
| 50 Fread initializes this to zero, so we need not specbind it | |
| 51 or worry about what happens to it when there is an error. | |
| 52 | |
| 53 XEmacs: | |
| 54 Nested backquotes are perfectly legal and fail utterly with | |
| 55 this silliness. */ | |
| 56 static int new_backquote_flag, old_backquote_flag; | |
| 57 Lisp_Object Qbackquote, Qbacktick, Qcomma, Qcomma_at, Qcomma_dot; | |
| 58 #endif | |
| 59 Lisp_Object Qvariable_domain; /* I18N3 */ | |
| 60 Lisp_Object Vvalues, Vstandard_input, Vafter_load_alist; | |
| 2548 | 61 Lisp_Object Vload_suppress_alist; |
| 62 Lisp_Object Qload, Qload_internal, Qfset; | |
| 428 | 63 |
| 64 /* Hash-table that maps directory names to hashes of their contents. */ | |
| 65 static Lisp_Object Vlocate_file_hash_table; | |
| 66 | |
| 67 Lisp_Object Qexists, Qreadable, Qwritable, Qexecutable; | |
| 68 | |
| 69 /* See read_escape() for an explanation of this. */ | |
| 70 #if 0 | |
| 71 int fail_on_bucky_bit_character_escapes; | |
| 72 #endif | |
| 73 | |
| 74 /* This symbol is also used in fns.c */ | |
| 75 #define FEATUREP_SYNTAX | |
| 76 | |
| 77 #ifdef FEATUREP_SYNTAX | |
| 78 Lisp_Object Qfeaturep; | |
| 79 #endif | |
| 80 | |
| 81 /* non-zero if inside `load' */ | |
| 82 int load_in_progress; | |
| 83 | |
| 84 /* Whether Fload_internal() should check whether the .el is newer | |
| 85 when loading .elc */ | |
| 86 int load_warn_when_source_newer; | |
| 87 /* Whether Fload_internal() should check whether the .elc doesn't exist */ | |
| 88 int load_warn_when_source_only; | |
| 89 /* Whether Fload_internal() should ignore .elc files when no suffix is given */ | |
| 90 int load_ignore_elc_files; | |
| 1123 | 91 /* Whether Fload_internal() should ignore out-of-date .elc files when no |
| 92 suffix is given */ | |
| 93 int load_ignore_out_of_date_elc_files; | |
| 94 /* Always display messages showing when a file is loaded, regardless of | |
| 95 whether the flag to `load' tries to suppress them. */ | |
| 96 int load_always_display_messages; | |
| 97 /* Show the full path in loading messages. */ | |
| 98 int load_show_full_path_in_messages; | |
| 428 | 99 |
| 100 /* Search path for files to be loaded. */ | |
| 101 Lisp_Object Vload_path; | |
| 102 | |
| 103 /* Search path for files when dumping. */ | |
| 104 /* Lisp_Object Vdump_load_path; */ | |
| 105 | |
| 106 /* This is the user-visible association list that maps features to | |
| 107 lists of defs in their load files. */ | |
| 108 Lisp_Object Vload_history; | |
| 109 | |
| 110 /* This is used to build the load history. */ | |
| 111 Lisp_Object Vcurrent_load_list; | |
| 112 | |
| 113 /* Name of file actually being read by `load'. */ | |
| 114 Lisp_Object Vload_file_name; | |
| 115 | |
| 116 /* Same as Vload_file_name but not Lisp-accessible. This ensures that | |
| 117 our #$ checks are reliable. */ | |
| 118 Lisp_Object Vload_file_name_internal; | |
| 119 | |
| 120 /* Function to use for reading, in `load' and friends. */ | |
| 121 Lisp_Object Vload_read_function; | |
| 122 | |
| 123 /* The association list of objects read with the #n=object form. | |
| 124 Each member of the list has the form (n . object), and is used to | |
| 125 look up the object for the corresponding #n# construct. | |
| 126 It must be set to nil before all top-level calls to read0. */ | |
| 127 Lisp_Object Vread_objects; | |
| 128 | |
| 129 /* Nonzero means load should forcibly load all dynamic doc strings. */ | |
| 130 /* Note that this always happens (with some special behavior) when | |
| 131 purify_flag is set. */ | |
| 132 static int load_force_doc_strings; | |
| 133 | |
| 134 /* List of descriptors now open for Fload_internal. */ | |
| 135 static Lisp_Object Vload_descriptor_list; | |
| 136 | |
| 137 /* In order to implement "load_force_doc_strings", we keep | |
| 138 a list of all the compiled-function objects and such | |
| 139 that we have created in the process of loading this file. | |
| 140 See the rant below. | |
| 141 | |
| 142 We specbind this just like Vload_file_name, so there's no | |
| 143 problems with recursive loading. */ | |
| 144 static Lisp_Object Vload_force_doc_string_list; | |
| 145 | |
| 146 /* A resizing-buffer stream used to temporarily hold data while reading */ | |
| 147 static Lisp_Object Vread_buffer_stream; | |
| 148 | |
| 149 static int load_byte_code_version; | |
| 150 | |
| 151 /* An array describing all known built-in structure types */ | |
| 152 static structure_type_dynarr *the_structure_type_dynarr; | |
| 153 | |
| 154 #if 0 /* FSF stuff */ | |
| 155 /* For use within read-from-string (this reader is non-reentrant!!) */ | |
| 156 static int read_from_string_index; | |
| 157 static int read_from_string_limit; | |
| 158 #endif | |
| 159 | |
| 160 #if 0 /* More FSF implementation kludges. */ | |
| 161 /* In order to implement load-force-doc-string, FSF saves the | |
| 162 #@-quoted string when it's seen, and goes back and retrieves | |
| 163 it later. | |
| 164 | |
| 165 This approach is not only kludgy, but it in general won't work | |
| 166 correctly because there's no stack of remembered #@-quoted-strings | |
| 167 and those strings don't generally appear in the file in the same | |
| 168 order as their #$ references. (Yes, that is amazingly stupid too. | |
| 169 | |
| 170 It would be trivially easy to always encode the #@ string | |
| 171 [which is a comment, anyway] in the middle of the (#$ . INT) cons | |
| 172 reference. That way, it would be really easy to implement | |
| 173 load-force-doc-string in a non-kludgy way by just retrieving the | |
| 174 string immediately, because it's delivered on a silver platter.) | |
| 175 | |
| 176 And finally, this stupid approach doesn't work under Mule, or | |
| 177 under MS-DOS or Windows NT, or under VMS, or any other place | |
| 178 where you either can't do an ftell() or don't get back a byte | |
| 179 count. | |
| 180 | |
| 181 Oh, and one more lossage in this approach: If you attempt to | |
| 182 dump any ELC files that were compiled with `byte-compile-dynamic' | |
| 183 (as opposed to just `byte-compile-dynamic-docstring'), you | |
| 184 get hosed. FMH! (as the illustrious JWZ was prone to utter) | |
| 185 | |
| 186 The approach we use is clean, solves all of these problems, and is | |
| 187 probably easier to implement anyway. We just save a list of all | |
| 188 the containing objects that have (#$ . INT) conses in them (this | |
| 189 will only be compiled-function objects and lists), and when the | |
| 190 file is finished loading, we go through and fill in all the | |
| 814 | 191 doc strings at once. --ben */ |
| 428 | 192 |
| 193 /* This contains the last string skipped with #@. */ | |
| 194 static char *saved_doc_string; | |
| 195 /* Length of buffer allocated in saved_doc_string. */ | |
| 196 static int saved_doc_string_size; | |
| 197 /* Length of actual data in saved_doc_string. */ | |
| 198 static int saved_doc_string_length; | |
| 199 /* This is the file position that string came from. */ | |
| 200 static int saved_doc_string_position; | |
| 201 #endif | |
| 202 | |
| 1123 | 203 static int locate_file_open_or_access_file (Ibyte *fn, int access_mode); |
| 428 | 204 EXFUN (Fread_from_string, 3); |
| 205 | |
| 206 /* When errors are signaled, the actual readcharfun should not be used | |
| 207 as an argument if it is an lstream, so that lstreams don't escape | |
| 208 to the Lisp level. */ | |
| 1261 | 209 #define READCHARFUN_MAYBE(x) (LSTREAMP (x) \ |
| 210 ? (build_msg_string ("internal input stream")) \ | |
| 428 | 211 : (x)) |
| 212 | |
| 213 | |
| 2268 | 214 static DECLARE_DOESNT_RETURN (read_syntax_error (const char *)); |
| 215 | |
| 428 | 216 static DOESNT_RETURN |
| 442 | 217 read_syntax_error (const char *string) |
| 428 | 218 { |
| 563 | 219 signal_error (Qinvalid_read_syntax, string, Qunbound); |
| 428 | 220 } |
| 221 | |
| 222 static Lisp_Object | |
| 442 | 223 continuable_read_syntax_error (const char *string) |
| 428 | 224 { |
| 563 | 225 return signal_continuable_error (Qinvalid_read_syntax, string, Qunbound); |
| 428 | 226 } |
| 227 | |
| 228 | |
| 229 /* Handle unreading and rereading of characters. */ | |
| 867 | 230 static Ichar |
| 428 | 231 readchar (Lisp_Object readcharfun) |
| 232 { | |
| 233 /* This function can GC */ | |
| 234 | |
| 235 if (BUFFERP (readcharfun)) | |
| 236 { | |
| 867 | 237 Ichar c; |
| 428 | 238 struct buffer *b = XBUFFER (readcharfun); |
| 239 | |
| 240 if (!BUFFER_LIVE_P (b)) | |
| 563 | 241 invalid_operation ("Reading from killed buffer", Qunbound); |
| 428 | 242 |
| 243 if (BUF_PT (b) >= BUF_ZV (b)) | |
| 244 return -1; | |
| 245 c = BUF_FETCH_CHAR (b, BUF_PT (b)); | |
| 246 BUF_SET_PT (b, BUF_PT (b) + 1); | |
| 247 | |
| 248 return c; | |
| 249 } | |
| 250 else if (LSTREAMP (readcharfun)) | |
| 251 { | |
| 867 | 252 Ichar c = Lstream_get_ichar (XLSTREAM (readcharfun)); |
| 428 | 253 #ifdef DEBUG_XEMACS /* testing Mule */ |
| 254 static int testing_mule = 0; /* Change via debugger */ | |
| 444 | 255 if (testing_mule) |
| 256 { | |
| 257 if (c >= 0x20 && c <= 0x7E) stderr_out ("%c", c); | |
| 258 else if (c == '\n') stderr_out ("\\n\n"); | |
| 259 else stderr_out ("\\%o ", c); | |
| 260 } | |
| 261 #endif /* testing Mule */ | |
| 428 | 262 return c; |
| 263 } | |
| 264 else if (MARKERP (readcharfun)) | |
| 265 { | |
| 867 | 266 Ichar c; |
| 665 | 267 Charbpos mpos = marker_position (readcharfun); |
| 428 | 268 struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
| 269 | |
| 270 if (mpos >= BUF_ZV (inbuffer)) | |
| 271 return -1; | |
| 272 c = BUF_FETCH_CHAR (inbuffer, mpos); | |
| 273 set_marker_position (readcharfun, mpos + 1); | |
| 274 return c; | |
| 275 } | |
| 276 else | |
| 277 { | |
| 278 Lisp_Object tem = call0 (readcharfun); | |
| 279 | |
| 280 if (!CHAR_OR_CHAR_INTP (tem)) | |
| 281 return -1; | |
| 282 return XCHAR_OR_CHAR_INT (tem); | |
| 283 } | |
| 284 } | |
| 285 | |
| 286 /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
| 287 If the stream is a user function, call it with the char as argument. */ | |
| 288 | |
| 289 static void | |
| 867 | 290 unreadchar (Lisp_Object readcharfun, Ichar c) |
| 428 | 291 { |
| 292 if (c == -1) | |
| 293 /* Don't back up the pointer if we're unreading the end-of-input mark, | |
| 294 since readchar didn't advance it when we read it. */ | |
| 295 ; | |
| 296 else if (BUFFERP (readcharfun)) | |
| 297 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1); | |
| 298 else if (LSTREAMP (readcharfun)) | |
| 299 { | |
| 867 | 300 Lstream_unget_ichar (XLSTREAM (readcharfun), c); |
| 428 | 301 #ifdef DEBUG_XEMACS /* testing Mule */ |
| 302 { | |
| 303 static int testing_mule = 0; /* Set this using debugger */ | |
| 304 if (testing_mule) | |
| 305 fprintf (stderr, | |
| 306 (c >= 0x20 && c <= 0x7E) ? "UU%c" : | |
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307 ((c == '\n') ? "UU\\n%c" : "UU\\%o"), c); |
| 428 | 308 } |
| 309 #endif | |
| 310 } | |
| 311 else if (MARKERP (readcharfun)) | |
| 312 set_marker_position (readcharfun, marker_position (readcharfun) - 1); | |
| 313 else | |
| 314 call1 (readcharfun, make_char (c)); | |
| 315 } | |
| 316 | |
| 317 static Lisp_Object read0 (Lisp_Object readcharfun); | |
| 318 static Lisp_Object read1 (Lisp_Object readcharfun); | |
| 319 static Lisp_Object read_list (Lisp_Object readcharfun, | |
| 867 | 320 Ichar terminator, |
| 428 | 321 int allow_dotted_lists, |
| 322 int check_for_doc_references); | |
| 323 | |
| 324 static void readevalloop (Lisp_Object readcharfun, | |
| 325 Lisp_Object sourcefile, | |
| 326 Lisp_Object (*evalfun) (Lisp_Object), | |
| 327 int printflag); | |
| 328 | |
| 329 static Lisp_Object | |
| 330 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */ | |
| 331 { | |
| 332 Lstream_close (XLSTREAM (stream)); | |
| 333 return Qnil; | |
| 334 } | |
| 335 | |
| 2548 | 336 /* Check if NONRELOC/RELOC (an absolute filename) is suppressed according |
| 337 to load-suppress-alist. */ | |
| 338 static int | |
| 339 check_if_suppressed (Ibyte *nonreloc, Lisp_Object reloc) | |
| 340 { | |
| 341 Bytecount len; | |
| 342 | |
| 343 if (!NILP (reloc)) | |
| 344 { | |
| 345 nonreloc = XSTRING_DATA (reloc); | |
| 346 len = XSTRING_LENGTH (reloc); | |
| 347 } | |
| 348 else | |
| 349 len = qxestrlen (nonreloc); | |
| 350 | |
| 351 if (len >= 4 && !qxestrcmp_ascii (nonreloc + len - 4, ".elc")) | |
| 352 len -= 4; | |
| 353 else if (len >= 3 && !qxestrcmp_ascii (nonreloc + len - 3, ".el")) | |
| 354 len -= 3; | |
| 355 | |
| 2567 | 356 { |
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357 EXTERNAL_LIST_LOOP_2 (cons, Vload_suppress_alist) |
| 2567 | 358 { |
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359 if (CONSP (cons) && STRINGP (XCAR (cons))) |
| 2567 | 360 { |
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361 Lisp_Object name = XCAR (cons); |
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362 if (XSTRING_LENGTH (name) == len && |
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363 !memcmp (XSTRING_DATA (name), nonreloc, len)) |
| 2567 | 364 { |
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365 struct gcpro gcpro1; |
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366 Lisp_Object val; |
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367 |
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368 GCPRO1 (reloc); |
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369 val = IGNORE_MULTIPLE_VALUES (Feval (XCDR (cons))); |
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370 UNGCPRO; |
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371 |
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372 if (!NILP (val)) |
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373 return 1; |
| 2567 | 374 } |
| 375 } | |
| 376 } | |
| 377 } | |
| 2548 | 378 |
| 379 return 0; | |
| 380 } | |
| 381 | |
| 428 | 382 /* The plague is coming. |
| 383 | |
| 384 Ring around the rosy, pocket full of posy, | |
| 385 Ashes ashes, they all fall down. | |
| 386 */ | |
| 387 void | |
| 388 ebolify_bytecode_constants (Lisp_Object vector) | |
| 389 { | |
| 390 int len = XVECTOR_LENGTH (vector); | |
| 391 int i; | |
| 392 | |
| 393 for (i = 0; i < len; i++) | |
| 394 { | |
| 395 Lisp_Object el = XVECTOR_DATA (vector)[i]; | |
| 396 | |
| 397 /* We don't check for `eq', `equal', and the others that have | |
| 398 bytecode opcodes. This might lose if someone passes #'eq or | |
| 399 something to `funcall', but who would really do that? As | |
| 400 they say in law, we've made a "good-faith effort" to | |
| 401 unfuckify ourselves. And doing it this way avoids screwing | |
| 402 up args to `make-hash-table' and such. As it is, we have to | |
| 403 add an extra Ebola check in decode_weak_list_type(). --ben */ | |
| 404 if (EQ (el, Qassoc)) el = Qold_assoc; | |
| 405 else if (EQ (el, Qdelq)) el = Qold_delq; | |
| 406 #if 0 | |
| 407 /* I think this is a bad idea because it will probably mess | |
| 408 with keymap code. */ | |
| 409 else if (EQ (el, Qdelete)) el = Qold_delete; | |
| 410 #endif | |
| 411 else if (EQ (el, Qrassq)) el = Qold_rassq; | |
| 412 else if (EQ (el, Qrassoc)) el = Qold_rassoc; | |
| 413 | |
| 414 XVECTOR_DATA (vector)[i] = el; | |
| 415 } | |
| 416 } | |
| 417 | |
| 418 static Lisp_Object | |
| 558 | 419 pas_de_holgazan_ici (int fd, Lisp_Object victim) |
| 428 | 420 { |
| 421 Lisp_Object tem; | |
| 422 EMACS_INT pos; | |
| 423 | |
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424 if (!FIXNUMP (XCDR (victim))) |
| 563 | 425 invalid_byte_code ("Bogus doc string reference", victim); |
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426 pos = XFIXNUM (XCDR (victim)); |
| 428 | 427 if (pos < 0) |
| 428 pos = -pos; /* kludge to mark a user variable */ | |
| 814 | 429 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal, 0); |
| 428 | 430 if (!STRINGP (tem)) |
| 563 | 431 signal_error_1 (Qinvalid_byte_code, tem); |
| 428 | 432 return tem; |
| 433 } | |
| 434 | |
| 435 static Lisp_Object | |
| 436 load_force_doc_string_unwind (Lisp_Object oldlist) | |
| 437 { | |
| 438 struct gcpro gcpro1; | |
| 439 Lisp_Object list = Vload_force_doc_string_list; | |
| 440 Lisp_Object tail; | |
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441 int fd = XFIXNUM (XCAR (Vload_descriptor_list)); |
| 428 | 442 |
| 443 GCPRO1 (list); | |
| 444 /* restore the old value first just in case an error occurs. */ | |
| 445 Vload_force_doc_string_list = oldlist; | |
| 446 | |
| 447 LIST_LOOP (tail, list) | |
| 448 { | |
| 449 Lisp_Object john = Fcar (tail); | |
| 450 if (CONSP (john)) | |
| 451 { | |
| 452 assert (CONSP (XCAR (john))); | |
| 453 assert (!purify_flag); /* should have been handled in read_list() */ | |
| 558 | 454 XCAR (john) = pas_de_holgazan_ici (fd, XCAR (john)); |
| 428 | 455 } |
| 456 else | |
| 457 { | |
| 458 Lisp_Object doc; | |
| 459 | |
| 460 assert (COMPILED_FUNCTIONP (john)); | |
| 461 if (CONSP (XCOMPILED_FUNCTION (john)->instructions)) | |
| 462 { | |
| 463 struct gcpro ngcpro1; | |
| 558 | 464 Lisp_Object juan = (pas_de_holgazan_ici |
| 814 | 465 (fd, |
| 466 XCOMPILED_FUNCTION (john)->instructions)); | |
| 428 | 467 Lisp_Object ivan; |
| 468 | |
| 469 NGCPRO1 (juan); | |
| 470 ivan = Fread (juan); | |
| 471 if (!CONSP (ivan)) | |
| 563 | 472 invalid_byte_code ("invalid lazy-loaded byte code", ivan); |
| 428 | 473 XCOMPILED_FUNCTION (john)->instructions = XCAR (ivan); |
| 474 /* v18 or v19 bytecode file. Need to Ebolify. */ | |
| 475 if (XCOMPILED_FUNCTION (john)->flags.ebolified | |
| 476 && VECTORP (XCDR (ivan))) | |
| 477 ebolify_bytecode_constants (XCDR (ivan)); | |
| 478 XCOMPILED_FUNCTION (john)->constants = XCDR (ivan); | |
| 479 NUNGCPRO; | |
| 480 } | |
| 481 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john)); | |
| 482 if (CONSP (doc)) | |
| 483 { | |
| 484 assert (!purify_flag); /* should have been handled in | |
| 485 read_compiled_function() */ | |
| 558 | 486 doc = pas_de_holgazan_ici (fd, doc); |
| 428 | 487 set_compiled_function_documentation (XCOMPILED_FUNCTION (john), |
| 488 doc); | |
| 489 } | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 if (!NILP (list)) | |
| 494 free_list (list); | |
| 495 | |
| 496 UNGCPRO; | |
| 497 return Qnil; | |
| 498 } | |
| 499 | |
| 500 /* Close all descriptors in use for Fload_internal. | |
| 501 This is used when starting a subprocess. */ | |
| 502 | |
| 503 void | |
| 504 close_load_descs (void) | |
| 505 { | |
| 506 Lisp_Object tail; | |
| 507 LIST_LOOP (tail, Vload_descriptor_list) | |
|
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changeset
|
508 retry_close (XFIXNUM (XCAR (tail))); |
| 428 | 509 } |
| 510 | |
| 511 #ifdef I18N3 | |
| 512 Lisp_Object Vfile_domain; | |
| 513 #endif /* I18N3 */ | |
| 514 | |
| 515 DEFUN ("load-internal", Fload_internal, 1, 6, 0, /* | |
| 516 Execute a file of Lisp code named FILE; no coding-system frobbing. | |
| 517 This function is identical to `load' except for the handling of the | |
| 518 CODESYS and USED-CODESYS arguments under XEmacs/Mule. (When Mule | |
| 519 support is not present, both functions are identical and ignore the | |
| 520 CODESYS and USED-CODESYS arguments.) | |
| 521 | |
| 522 If support for Mule exists in this Emacs, the file is decoded | |
| 523 according to CODESYS; if omitted, no conversion happens. If | |
| 524 USED-CODESYS is non-nil, it should be a symbol, and the actual coding | |
| 525 system that was used for the decoding is stored into it. It will in | |
| 526 general be different from CODESYS if CODESYS specifies automatic | |
| 527 encoding detection or end-of-line detection. | |
| 528 */ | |
| 444 | 529 (file, noerror, nomessage, nosuffix, codesys, used_codesys)) |
| 428 | 530 { |
| 531 /* This function can GC */ | |
| 532 int fd = -1; | |
| 533 int speccount = specpdl_depth (); | |
| 534 int source_only = 0; | |
| 1123 | 535 /* NEWER and OLDER are filenames w/o directory, used in loading messages |
| 536 to e.g. warn of newer .el files when the .elc is being loaded. */ | |
| 428 | 537 Lisp_Object newer = Qnil; |
| 1123 | 538 Lisp_Object older = Qnil; |
| 428 | 539 Lisp_Object handler = Qnil; |
| 540 Lisp_Object found = Qnil; | |
| 1292 | 541 Lisp_Object retval; |
| 1123 | 542 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 428 | 543 int reading_elc = 0; |
| 780 | 544 int from_require = EQ (nomessage, Qrequire); |
| 1261 | 545 int message_p = NILP (nomessage) || load_always_display_messages; |
| 428 | 546 struct stat s1, s2; |
| 1261 | 547 Ibyte *spaces = alloca_ibytes (load_in_progress * 2 + 10); |
| 548 int i; | |
| 1292 | 549 PROFILE_DECLARE (); |
| 428 | 550 |
| 1266 | 551 GCPRO4 (file, newer, older, found); |
| 428 | 552 CHECK_STRING (file); |
| 553 | |
| 1292 | 554 PROFILE_RECORD_ENTERING_SECTION (Qload_internal); |
| 555 | |
| 428 | 556 /* If file name is magic, call the handler. */ |
| 557 handler = Ffind_file_name_handler (file, Qload); | |
| 558 if (!NILP (handler)) | |
| 1292 | 559 { |
| 560 retval = call5 (handler, Qload, file, noerror, nomessage, nosuffix); | |
| 561 goto done; | |
| 562 } | |
| 428 | 563 |
| 564 /* Do this after the handler to avoid | |
| 565 the need to gcpro noerror, nomessage and nosuffix. | |
| 566 (Below here, we care only whether they are nil or not.) */ | |
| 567 file = Fsubstitute_in_file_name (file); | |
| 568 if (!NILP (used_codesys)) | |
| 569 CHECK_SYMBOL (used_codesys); | |
| 570 | |
| 1261 | 571 if (noninteractive) |
| 572 { | |
| 573 for (i = 0; i < load_in_progress * 2; i++) | |
| 574 spaces[i] = ' '; | |
| 575 spaces[i] = '\0'; | |
| 576 } | |
| 577 else | |
| 578 spaces[0] = '\0'; | |
| 579 | |
| 428 | 580 /* Avoid weird lossage with null string as arg, |
| 581 since it would try to load a directory as a Lisp file. | |
| 582 Unix truly sucks. */ | |
| 583 if (XSTRING_LENGTH (file) > 0) | |
| 584 { | |
| 867 | 585 Ibyte *foundstr; |
| 428 | 586 int foundlen; |
| 587 | |
| 588 fd = locate_file (Vload_path, file, | |
| 589 ((!NILP (nosuffix)) ? Qnil : | |
|
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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4844
diff
changeset
|
590 build_ascstring (load_ignore_elc_files ? ".el:" : |
| 428 | 591 ".elc:.el:")), |
| 592 &found, | |
| 593 -1); | |
| 594 | |
| 595 if (fd < 0) | |
| 596 { | |
| 444 | 597 if (NILP (noerror)) |
| 563 | 598 signal_error (Qfile_error, "Cannot open load file", file); |
| 428 | 599 else |
| 600 { | |
| 1292 | 601 retval = Qnil; |
| 602 goto done; | |
| 428 | 603 } |
| 604 } | |
| 605 | |
| 2367 | 606 foundstr = alloca_ibytes (XSTRING_LENGTH (found) + 1); |
| 771 | 607 qxestrcpy (foundstr, XSTRING_DATA (found)); |
| 608 foundlen = qxestrlen (foundstr); | |
| 428 | 609 |
| 610 /* The omniscient JWZ thinks this is worthless, but I beg to | |
| 611 differ. --ben */ | |
| 612 if (load_ignore_elc_files) | |
| 1123 | 613 newer = Ffile_name_nondirectory (found); |
| 614 else if ((load_warn_when_source_newer || | |
| 615 load_ignore_out_of_date_elc_files) && | |
| 428 | 616 !memcmp (".elc", foundstr + foundlen - 4, 4)) |
| 617 { | |
| 771 | 618 if (! qxe_fstat (fd, &s1)) /* can't fail, right? */ |
| 428 | 619 { |
| 620 int result; | |
| 621 /* temporarily hack the 'c' off the end of the filename */ | |
| 622 foundstr[foundlen - 1] = '\0'; | |
| 771 | 623 result = qxe_stat (foundstr, &s2); |
| 428 | 624 if (result >= 0 && |
| 625 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) | |
| 1123 | 626 { |
| 627 /* .elc exists and is out-of-date wrt .el */ | |
| 628 Lisp_Object el_name = make_string (foundstr, foundlen - 1); | |
| 629 struct gcpro nngcpro1; | |
| 630 NNGCPRO1 (el_name); | |
| 631 newer = Ffile_name_nondirectory (el_name); | |
| 632 if (load_ignore_out_of_date_elc_files) | |
| 633 { | |
| 634 int newfd = | |
| 635 locate_file_open_or_access_file | |
| 636 (XSTRING_DATA (el_name), -1); | |
| 637 | |
| 638 if (newfd >= 0) | |
| 639 { | |
| 640 older = Ffile_name_nondirectory (found); | |
| 641 found = el_name; | |
| 642 retry_close (fd); | |
| 643 fd = newfd; | |
| 644 } | |
| 645 } | |
| 646 NNUNGCPRO; | |
| 647 } | |
| 428 | 648 /* put the 'c' back on (kludge-o-rama) */ |
| 649 foundstr[foundlen - 1] = 'c'; | |
| 650 } | |
| 651 } | |
| 652 else if (load_warn_when_source_only && | |
| 653 /* `found' ends in ".el" */ | |
| 654 !memcmp (".el", foundstr + foundlen - 3, 3) && | |
| 655 /* `file' does not end in ".el" */ | |
| 656 memcmp (".el", | |
| 657 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3, | |
| 658 3)) | |
| 1123 | 659 source_only = 1; |
| 428 | 660 |
| 661 if (!memcmp (".elc", foundstr + foundlen - 4, 4)) | |
| 662 reading_elc = 1; | |
| 663 } | |
| 664 | |
| 1123 | 665 #define PRINT_LOADING_MESSAGE_1(loading, done) \ |
| 666 do { \ | |
| 667 if (load_ignore_elc_files) \ | |
| 668 { \ | |
| 669 if (message_p) \ | |
| 1261 | 670 message (loading done, spaces, \ |
| 1123 | 671 XSTRING_DATA (load_show_full_path_in_messages ? \ |
| 672 found : newer)); \ | |
| 673 } \ | |
| 674 else if (!NILP (older)) \ | |
| 675 { \ | |
| 676 assert (load_ignore_out_of_date_elc_files); \ | |
| 1261 | 677 message (loading done " (file %s is out-of-date)", spaces, \ |
| 1123 | 678 XSTRING_DATA (load_show_full_path_in_messages ? \ |
| 679 found : newer), \ | |
| 680 XSTRING_DATA (older)); \ | |
| 681 } \ | |
| 682 else if (!NILP (newer)) \ | |
| 1261 | 683 message (loading done " (file %s is newer)", spaces, \ |
| 1123 | 684 XSTRING_DATA (load_show_full_path_in_messages ? \ |
| 685 found : file), \ | |
| 686 XSTRING_DATA (newer)); \ | |
| 687 else if (source_only) \ | |
| 1261 | 688 message (loading done " (file %s.elc does not exist)", spaces, \ |
| 1123 | 689 XSTRING_DATA (load_show_full_path_in_messages ? \ |
| 690 found : file), \ | |
| 691 XSTRING_DATA (Ffile_name_nondirectory (file))); \ | |
| 692 else if (message_p) \ | |
| 1261 | 693 message (loading done, spaces, \ |
| 1123 | 694 XSTRING_DATA (load_show_full_path_in_messages ? \ |
| 695 found : file)); \ | |
| 428 | 696 } while (0) |
| 697 | |
| 1261 | 698 #define PRINT_LOADING_MESSAGE(done) \ |
| 699 do { \ | |
| 700 if (from_require) \ | |
| 701 PRINT_LOADING_MESSAGE_1 ("%sRequiring %s...", done); \ | |
| 702 else \ | |
| 703 PRINT_LOADING_MESSAGE_1 ("%sLoading %s...", done); \ | |
| 780 | 704 } while (0) |
| 705 | |
| 428 | 706 PRINT_LOADING_MESSAGE (""); |
| 707 | |
|
4608
1e3cf11fa27d
Make #$ truly read-only for Lisp; check this in the test suite.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4483
diff
changeset
|
708 LISP_READONLY (found) = 1; |
|
1e3cf11fa27d
Make #$ truly read-only for Lisp; check this in the test suite.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4483
diff
changeset
|
709 |
| 428 | 710 { |
| 711 /* Lisp_Object's must be malloc'ed, not stack-allocated */ | |
| 712 Lisp_Object lispstream = Qnil; | |
| 442 | 713 const int block_size = 8192; |
| 428 | 714 struct gcpro ngcpro1; |
| 715 | |
| 716 NGCPRO1 (lispstream); | |
| 717 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING); | |
| 718 /* 64K is used for normal files; 8K should be OK here because Lisp | |
| 719 files aren't really all that big. */ | |
| 720 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED, | |
| 721 block_size); | |
| 771 | 722 lispstream = make_coding_input_stream |
| 723 (XLSTREAM (lispstream), get_coding_system_for_text_file (codesys, 1), | |
| 800 | 724 CODING_DECODE, 0); |
| 428 | 725 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED, |
| 726 block_size); | |
| 727 /* NOTE: Order of these is very important. Don't rearrange them. */ | |
| 853 | 728 internal_bind_int (&load_in_progress, 1 + load_in_progress); |
| 428 | 729 record_unwind_protect (load_unwind, lispstream); |
| 853 | 730 internal_bind_lisp_object (&Vload_descriptor_list, |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
731 Fcons (make_fixnum (fd), Vload_descriptor_list)); |
| 853 | 732 internal_bind_lisp_object (&Vload_file_name_internal, found); |
| 733 /* this is not a simple internal_bind. */ | |
| 428 | 734 record_unwind_protect (load_force_doc_string_unwind, |
| 735 Vload_force_doc_string_list); | |
| 853 | 736 Vload_force_doc_string_list = Qnil; |
|
4608
1e3cf11fa27d
Make #$ truly read-only for Lisp; check this in the test suite.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4483
diff
changeset
|
737 /* load-file-name is not read-only to Lisp. */ |
|
1e3cf11fa27d
Make #$ truly read-only for Lisp; check this in the test suite.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4483
diff
changeset
|
738 internal_bind_lisp_object (&Vload_file_name, Fcopy_sequence(found)); |
| 428 | 739 #ifdef I18N3 |
| 853 | 740 /* set it to nil; a call to #'domain will set it. */ |
| 741 internal_bind_lisp_object (&Vfile_domain, Qnil); | |
| 428 | 742 #endif |
| 743 | |
|
4448
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
744 /* Is there a #!? If so, read it, and unread ;!. |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
745 |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
746 GNU implement this by treating any #! anywhere in the source text as |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
747 commenting out the whole line. */ |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
748 { |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
749 char shebangp[2]; |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
750 int num_read; |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
751 |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
752 num_read = Lstream_read (XLSTREAM (lispstream), shebangp, |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
753 sizeof(shebangp)); |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
754 if (sizeof(shebangp) == num_read |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
755 && 0 == strncmp("#!", shebangp, sizeof(shebangp))) |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
756 { |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
757 shebangp[0] = ';'; |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
758 } |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
759 |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
760 Lstream_unread (XLSTREAM (lispstream), shebangp, num_read); |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
761 } |
|
fd8a9a4d81d9
Support #!, to allow XEmacs to be called as a script interpreter.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
762 |
| 428 | 763 /* Now determine what sort of ELC file we're reading in. */ |
| 853 | 764 internal_bind_int (&load_byte_code_version, load_byte_code_version); |
| 428 | 765 if (reading_elc) |
| 766 { | |
| 767 char elc_header[8]; | |
| 768 int num_read; | |
| 769 | |
| 770 num_read = Lstream_read (XLSTREAM (lispstream), elc_header, 8); | |
| 771 if (num_read < 8 | |
| 772 || strncmp (elc_header, ";ELC", 4)) | |
| 773 { | |
| 774 /* Huh? Probably not a valid ELC file. */ | |
| 775 load_byte_code_version = 100; /* no Ebolification needed */ | |
| 776 Lstream_unread (XLSTREAM (lispstream), elc_header, num_read); | |
| 777 } | |
| 778 else | |
| 779 load_byte_code_version = elc_header[4]; | |
| 780 } | |
| 781 else | |
| 782 load_byte_code_version = 100; /* no Ebolification needed */ | |
| 783 | |
| 784 readevalloop (lispstream, file, Feval, 0); | |
| 785 if (!NILP (used_codesys)) | |
| 786 Fset (used_codesys, | |
| 787 XCODING_SYSTEM_NAME | |
| 771 | 788 (coding_stream_detected_coding_system (XLSTREAM (lispstream)))); |
| 789 unbind_to (speccount); | |
| 428 | 790 |
| 791 NUNGCPRO; | |
| 792 } | |
| 793 | |
| 794 { | |
| 795 Lisp_Object tem; | |
| 796 /* #### Disgusting kludge */ | |
| 797 /* Run any load-hooks for this file. */ | |
| 798 /* #### An even more disgusting kludge. There is horrible code */ | |
| 799 /* that is relying on the fact that dumped lisp files are found */ | |
| 800 /* via `load-path' search. */ | |
| 801 Lisp_Object name = file; | |
| 802 | |
| 1123 | 803 if (!NILP (Ffile_name_absolute_p (file))) |
| 804 name = Ffile_name_nondirectory (file); | |
| 428 | 805 |
| 1261 | 806 tem = Fassoc (name, Vafter_load_alist); |
| 428 | 807 if (!NILP (tem)) |
| 808 { | |
| 809 struct gcpro ngcpro1; | |
| 810 | |
| 811 NGCPRO1 (tem); | |
| 812 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */ | |
| 813 tem = Fcons (Qprogn, Fcdr (tem)); | |
| 814 Feval (tem); | |
| 815 NUNGCPRO; | |
| 816 } | |
| 817 } | |
| 818 | |
| 819 if (!noninteractive) | |
| 820 PRINT_LOADING_MESSAGE ("done"); | |
| 821 | |
| 1292 | 822 retval = Qt; |
| 823 done: | |
| 824 PROFILE_RECORD_EXITING_SECTION (Qload_internal); | |
| 428 | 825 UNGCPRO; |
| 1292 | 826 return retval; |
| 428 | 827 } |
| 828 | |
| 829 | |
| 830 /* ------------------------------- */ | |
| 831 /* locate_file */ | |
| 832 /* ------------------------------- */ | |
| 833 | |
| 834 static int | |
| 835 decode_mode_1 (Lisp_Object mode) | |
| 836 { | |
| 837 if (EQ (mode, Qexists)) | |
| 838 return F_OK; | |
| 839 else if (EQ (mode, Qexecutable)) | |
| 840 return X_OK; | |
| 841 else if (EQ (mode, Qwritable)) | |
| 842 return W_OK; | |
| 843 else if (EQ (mode, Qreadable)) | |
| 844 return R_OK; | |
|
5307
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5247
diff
changeset
|
845 else if (INTEGERP (mode)) |
| 428 | 846 { |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
847 check_integer_range (mode, Qzero, make_fixnum (7)); |
|
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
848 return XFIXNUM (mode); |
| 428 | 849 } |
| 850 else | |
| 563 | 851 invalid_argument ("Invalid value", mode); |
| 428 | 852 return 0; /* unreached */ |
| 853 } | |
| 854 | |
| 855 static int | |
| 856 decode_mode (Lisp_Object mode) | |
| 857 { | |
| 858 if (NILP (mode)) | |
| 859 return R_OK; | |
| 860 else if (CONSP (mode)) | |
| 861 { | |
| 862 int mask = 0; | |
| 2367 | 863 EXTERNAL_LIST_LOOP_2 (elt, mode) |
| 864 mask |= decode_mode_1 (elt); | |
| 428 | 865 return mask; |
| 866 } | |
| 867 else | |
| 868 return decode_mode_1 (mode); | |
| 869 } | |
| 870 | |
| 871 DEFUN ("locate-file", Flocate_file, 2, 4, 0, /* | |
| 872 Search for FILENAME through PATH-LIST. | |
| 873 | |
| 874 If SUFFIXES is non-nil, it should be a list of suffixes to append to | |
| 875 file name when searching. | |
| 876 | |
| 877 If MODE is non-nil, it should be a symbol or a list of symbol representing | |
| 878 requirements. Allowed symbols are `exists', `executable', `writable', and | |
| 879 `readable'. If MODE is nil, it defaults to `readable'. | |
| 880 | |
| 2548 | 881 Filenames are checked against `load-suppress-alist' to determine if they |
| 882 should be ignored. | |
| 883 | |
| 428 | 884 `locate-file' keeps hash tables of the directories it searches through, |
| 885 in order to speed things up. It tries valiantly to not get confused in | |
| 886 the face of a changing and unpredictable environment, but can occasionally | |
| 887 get tripped up. In this case, you will have to call | |
| 888 `locate-file-clear-hashing' to get it back on track. See that function | |
| 889 for details. | |
| 890 */ | |
| 891 (filename, path_list, suffixes, mode)) | |
| 892 { | |
| 893 /* This function can GC */ | |
| 894 Lisp_Object tp; | |
| 895 | |
| 896 CHECK_STRING (filename); | |
| 897 | |
| 898 if (LISTP (suffixes)) | |
| 899 { | |
| 2367 | 900 EXTERNAL_LIST_LOOP_2 (elt, suffixes) |
| 901 CHECK_STRING (elt); | |
| 428 | 902 } |
| 903 else | |
| 904 CHECK_STRING (suffixes); | |
| 905 | |
| 906 locate_file (path_list, filename, suffixes, &tp, decode_mode (mode)); | |
| 907 return tp; | |
| 908 } | |
| 909 | |
| 910 /* Recalculate the hash table for the given string. DIRECTORY should | |
| 911 better have been through Fexpand_file_name() by now. */ | |
| 912 | |
| 913 static Lisp_Object | |
| 914 locate_file_refresh_hashing (Lisp_Object directory) | |
| 915 { | |
|
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
916 Lisp_Object hash = make_directory_hash_table (directory); |
| 428 | 917 |
| 918 if (!NILP (hash)) | |
| 919 Fputhash (directory, hash, Vlocate_file_hash_table); | |
| 920 return hash; | |
| 921 } | |
| 922 | |
| 923 /* find the hash table for the given directory, recalculating if necessary */ | |
| 924 | |
| 925 static Lisp_Object | |
| 926 locate_file_find_directory_hash_table (Lisp_Object directory) | |
| 927 { | |
| 928 Lisp_Object hash = Fgethash (directory, Vlocate_file_hash_table, Qnil); | |
| 929 if (NILP (hash)) | |
| 930 return locate_file_refresh_hashing (directory); | |
| 931 else | |
| 932 return hash; | |
| 933 } | |
| 934 | |
| 935 /* The SUFFIXES argument in any of the locate_file* functions can be | |
| 936 nil, a list, or a string (for backward compatibility), with the | |
| 937 following semantics: | |
| 938 | |
| 939 a) nil - no suffix, just search for file name intact | |
| 940 (semantically different from "empty suffix list", which | |
| 941 would be meaningless.) | |
| 942 b) list - list of suffixes to append to file name. Each of these | |
| 943 must be a string. | |
| 944 c) string - colon-separated suffixes to append to file name (backward | |
| 945 compatibility). | |
| 946 | |
| 947 All of this got hairy, so I decided to use a mapper. Calling a | |
| 948 function for each suffix shouldn't slow things down, since | |
| 949 locate_file is rarely called with enough suffixes for funcalls to | |
| 950 make any difference. */ | |
| 951 | |
| 952 /* Map FUN over SUFFIXES, as described above. FUN will be called with a | |
| 953 char * containing the current file name, and ARG. Mapping stops when | |
| 954 FUN returns non-zero. */ | |
| 955 static void | |
| 956 locate_file_map_suffixes (Lisp_Object filename, Lisp_Object suffixes, | |
| 867 | 957 int (*fun) (Ibyte *, void *), |
| 428 | 958 void *arg) |
| 959 { | |
| 960 /* This function can GC */ | |
| 867 | 961 Ibyte *fn; |
| 428 | 962 int fn_len, max; |
| 963 | |
| 964 /* Calculate maximum size of any filename made from | |
| 965 this path element/specified file name and any possible suffix. */ | |
| 966 if (CONSP (suffixes)) | |
| 967 { | |
| 968 /* We must traverse the list, so why not do it right. */ | |
| 969 Lisp_Object tail; | |
| 970 max = 0; | |
| 971 LIST_LOOP (tail, suffixes) | |
| 972 { | |
| 973 if (XSTRING_LENGTH (XCAR (tail)) > max) | |
| 974 max = XSTRING_LENGTH (XCAR (tail)); | |
| 975 } | |
| 976 } | |
| 977 else if (NILP (suffixes)) | |
| 978 max = 0; | |
| 979 else | |
| 980 /* Just take the easy way out */ | |
| 981 max = XSTRING_LENGTH (suffixes); | |
| 982 | |
| 983 fn_len = XSTRING_LENGTH (filename); | |
| 2367 | 984 fn = alloca_ibytes (max + fn_len + 1); |
| 771 | 985 memcpy (fn, XSTRING_DATA (filename), fn_len); |
| 428 | 986 |
| 987 /* Loop over suffixes. */ | |
| 988 if (!STRINGP (suffixes)) | |
| 989 { | |
| 990 if (NILP (suffixes)) | |
| 991 { | |
| 992 /* Case a) discussed in the comment above. */ | |
| 993 fn[fn_len] = 0; | |
| 994 if ((*fun) (fn, arg)) | |
| 995 return; | |
| 996 } | |
| 997 else | |
| 998 { | |
| 999 /* Case b) */ | |
| 1000 Lisp_Object tail; | |
| 1001 LIST_LOOP (tail, suffixes) | |
| 1002 { | |
| 1003 memcpy (fn + fn_len, XSTRING_DATA (XCAR (tail)), | |
| 1004 XSTRING_LENGTH (XCAR (tail))); | |
| 1005 fn[fn_len + XSTRING_LENGTH (XCAR (tail))] = 0; | |
| 1006 if ((*fun) (fn, arg)) | |
| 1007 return; | |
| 1008 } | |
| 1009 } | |
| 1010 } | |
| 1011 else | |
| 1012 { | |
| 1013 /* Case c) */ | |
| 867 | 1014 const Ibyte *nsuffix = XSTRING_DATA (suffixes); |
| 428 | 1015 |
| 1016 while (1) | |
| 1017 { | |
| 867 | 1018 Ibyte *esuffix = qxestrchr (nsuffix, ':'); |
| 771 | 1019 Bytecount lsuffix = esuffix ? esuffix - nsuffix : |
| 1020 qxestrlen (nsuffix); | |
| 428 | 1021 |
| 1022 /* Concatenate path element/specified name with the suffix. */ | |
| 771 | 1023 qxestrncpy (fn + fn_len, nsuffix, lsuffix); |
| 428 | 1024 fn[fn_len + lsuffix] = 0; |
| 1025 | |
| 1026 if ((*fun) (fn, arg)) | |
| 1027 return; | |
| 1028 | |
| 1029 /* Advance to next suffix. */ | |
| 1030 if (esuffix == 0) | |
| 1031 break; | |
| 1032 nsuffix += lsuffix + 1; | |
| 1033 } | |
| 1034 } | |
| 1035 } | |
| 1036 | |
| 771 | 1037 struct locate_file_in_directory_mapper_closure |
| 1038 { | |
| 428 | 1039 int fd; |
| 1040 Lisp_Object *storeptr; | |
| 1041 int mode; | |
| 1042 }; | |
| 1043 | |
| 1123 | 1044 /* open() or access() a file to be returned by locate_file(). if |
| 1045 ACCESS_MODE >= 0, do an access() with that mode, else open(). Does | |
| 1046 various magic, e.g. opening the file read-only and binary and setting | |
| 1047 the close-on-exec flag on the file. */ | |
| 1048 | |
| 1049 static int | |
| 1050 locate_file_open_or_access_file (Ibyte *fn, int access_mode) | |
| 1051 { | |
| 1052 int val; | |
| 1053 | |
| 1054 /* Check that we can access or open it. */ | |
| 1055 if (access_mode >= 0) | |
| 1056 val = qxe_access (fn, access_mode); | |
| 1057 else | |
| 1058 { | |
| 1059 val = qxe_open (fn, O_RDONLY | OPEN_BINARY, 0); | |
| 1060 | |
| 1061 #ifndef WIN32_NATIVE | |
| 1062 if (val >= 0) | |
| 1063 /* If we actually opened the file, set close-on-exec flag | |
| 1064 on the new descriptor so that subprocesses can't whack | |
| 1065 at it. */ | |
| 1066 (void) fcntl (val, F_SETFD, FD_CLOEXEC); | |
| 1067 #endif | |
| 1068 } | |
| 1069 | |
| 1070 return val; | |
| 1071 } | |
| 1072 | |
| 428 | 1073 static int |
| 867 | 1074 locate_file_in_directory_mapper (Ibyte *fn, void *arg) |
| 428 | 1075 { |
| 1076 struct locate_file_in_directory_mapper_closure *closure = | |
| 771 | 1077 (struct locate_file_in_directory_mapper_closure *) arg; |
| 428 | 1078 struct stat st; |
| 1079 | |
| 1080 /* Ignore file if it's a directory. */ | |
| 771 | 1081 if (qxe_stat (fn, &st) >= 0 |
| 428 | 1082 && (st.st_mode & S_IFMT) != S_IFDIR) |
| 1083 { | |
| 1084 /* Check that we can access or open it. */ | |
| 1123 | 1085 closure->fd = locate_file_open_or_access_file (fn, closure->mode); |
| 428 | 1086 |
| 1087 if (closure->fd >= 0) | |
| 1088 { | |
| 2548 | 1089 if (!check_if_suppressed (fn, Qnil)) |
| 1090 { | |
| 1091 /* We succeeded; return this descriptor and filename. */ | |
| 1092 if (closure->storeptr) | |
|
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diff
changeset
|
1093 *closure->storeptr = build_istring (fn); |
| 2548 | 1094 |
| 1095 return 1; | |
| 1096 } | |
| 428 | 1097 } |
| 1098 } | |
| 1099 /* Keep mapping. */ | |
| 1100 return 0; | |
| 1101 } | |
| 1102 | |
| 1103 | |
| 1104 /* look for STR in PATH, optionally adding SUFFIXES. DIRECTORY need | |
| 1105 not have been expanded. */ | |
| 1106 | |
| 1107 static int | |
| 1108 locate_file_in_directory (Lisp_Object directory, Lisp_Object str, | |
| 1109 Lisp_Object suffixes, Lisp_Object *storeptr, | |
| 1110 int mode) | |
| 1111 { | |
| 1112 /* This function can GC */ | |
| 1113 struct locate_file_in_directory_mapper_closure closure; | |
| 1114 Lisp_Object filename = Qnil; | |
| 1115 struct gcpro gcpro1, gcpro2, gcpro3; | |
| 1116 | |
| 1117 GCPRO3 (directory, str, filename); | |
| 1118 | |
| 1119 filename = Fexpand_file_name (str, directory); | |
| 1120 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename))) | |
| 1121 /* If there are non-absolute elts in PATH (eg ".") */ | |
| 1122 /* Of course, this could conceivably lose if luser sets | |
| 1123 default-directory to be something non-absolute ... */ | |
| 1124 { | |
| 1125 if (NILP (filename)) | |
| 1126 /* NIL means current directory */ | |
| 1127 filename = current_buffer->directory; | |
| 1128 else | |
| 1129 filename = Fexpand_file_name (filename, | |
| 1130 current_buffer->directory); | |
| 1131 if (NILP (Ffile_name_absolute_p (filename))) | |
| 1132 { | |
| 1133 /* Give up on this directory! */ | |
| 1134 UNGCPRO; | |
| 1135 return -1; | |
| 1136 } | |
| 1137 } | |
| 1138 | |
| 1139 closure.fd = -1; | |
| 1140 closure.storeptr = storeptr; | |
| 1141 closure.mode = mode; | |
| 1142 | |
| 771 | 1143 locate_file_map_suffixes (filename, suffixes, |
| 1144 locate_file_in_directory_mapper, | |
| 428 | 1145 &closure); |
| 1146 | |
| 1147 UNGCPRO; | |
| 1148 return closure.fd; | |
| 1149 } | |
| 1150 | |
| 1151 /* do the same as locate_file() but don't use any hash tables. */ | |
| 1152 | |
| 1153 static int | |
| 1154 locate_file_without_hash (Lisp_Object path, Lisp_Object str, | |
| 1155 Lisp_Object suffixes, Lisp_Object *storeptr, | |
| 1156 int mode) | |
| 1157 { | |
| 1158 /* This function can GC */ | |
| 1159 int absolute = !NILP (Ffile_name_absolute_p (str)); | |
| 1160 | |
| 2367 | 1161 EXTERNAL_LIST_LOOP_2 (elt, path) |
| 428 | 1162 { |
| 2367 | 1163 int val = locate_file_in_directory (elt, str, suffixes, storeptr, |
| 428 | 1164 mode); |
| 1165 if (val >= 0) | |
| 1166 return val; | |
| 1167 if (absolute) | |
| 1168 break; | |
| 1169 } | |
| 1170 return -1; | |
| 1171 } | |
| 1172 | |
| 1173 static int | |
| 867 | 1174 locate_file_construct_suffixed_files_mapper (Ibyte *fn, void *arg) |
| 428 | 1175 { |
| 771 | 1176 Lisp_Object *tail = (Lisp_Object *) arg; |
|
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parents:
4952
diff
changeset
|
1177 *tail = Fcons (build_istring (fn), *tail); |
| 428 | 1178 return 0; |
| 1179 } | |
| 1180 | |
| 1181 /* Construct a list of all files to search for. | |
| 1182 It makes sense to have this despite locate_file_map_suffixes() | |
| 1183 because we need Lisp strings to access the hash-table, and it would | |
| 1184 be inefficient to create them on the fly, again and again for each | |
| 1185 path component. See locate_file(). */ | |
| 1186 | |
| 1187 static Lisp_Object | |
| 1188 locate_file_construct_suffixed_files (Lisp_Object filename, | |
| 1189 Lisp_Object suffixes) | |
| 1190 { | |
| 1191 Lisp_Object tail = Qnil; | |
| 1192 struct gcpro gcpro1; | |
| 1193 GCPRO1 (tail); | |
| 1194 | |
| 1195 locate_file_map_suffixes (filename, suffixes, | |
| 1196 locate_file_construct_suffixed_files_mapper, | |
| 1197 &tail); | |
| 1198 | |
| 1199 UNGCPRO; | |
| 1200 return Fnreverse (tail); | |
| 1201 } | |
| 1202 | |
| 1203 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing, 1, 1, 0, /* | |
| 1204 Clear the hash records for the specified list of directories. | |
| 1205 `locate-file' uses a hashing scheme to speed lookup, and will correctly | |
| 1206 track the following environmental changes: | |
| 1207 | |
| 1208 -- changes of any sort to the list of directories to be searched. | |
| 1209 -- addition and deletion of non-shadowing files (see below) from the | |
| 1210 directories in the list. | |
| 1211 -- byte-compilation of a .el file into a .elc file. | |
| 1212 | |
| 1213 `locate-file' will primarily get confused if you add a file that shadows | |
| 1214 \(i.e. has the same name as) another file further down in the directory list. | |
| 1215 In this case, you must call `locate-file-clear-hashing'. | |
| 1216 | |
| 1217 If PATH is t, it means to fully clear all the accumulated hashes. This | |
| 1218 can be used if the internal tables grow too large, or when dumping. | |
| 1219 */ | |
| 1220 (path)) | |
| 1221 { | |
| 1222 if (EQ (path, Qt)) | |
| 1223 Fclrhash (Vlocate_file_hash_table); | |
| 1224 else | |
| 1225 { | |
| 2367 | 1226 EXTERNAL_LIST_LOOP_2 (elt, path) |
| 428 | 1227 { |
| 2367 | 1228 Lisp_Object pathel = Fexpand_file_name (elt, Qnil); |
| 428 | 1229 Fremhash (pathel, Vlocate_file_hash_table); |
| 1230 } | |
| 1231 } | |
| 1232 return Qnil; | |
| 1233 } | |
| 1234 | |
| 1235 /* Search for a file whose name is STR, looking in directories | |
| 1236 in the Lisp list PATH, and trying suffixes from SUFFIXES. | |
| 1237 SUFFIXES is a list of possible suffixes, or (for backward | |
| 1238 compatibility) a string containing possible suffixes separated by | |
| 1239 colons. | |
| 1240 On success, returns a file descriptor. On failure, returns -1. | |
| 1241 | |
| 1242 MODE nonnegative means don't open the files, | |
| 1243 just look for one for which access(file,MODE) succeeds. In this case, | |
| 951 | 1244 returns a nonnegative value on success. On failure, returns -1. |
| 428 | 1245 |
| 2548 | 1246 If STOREPTR is non-nil, it points to a slot where the name of |
| 428 | 1247 the file actually found should be stored as a Lisp string. |
| 1248 Nil is stored there on failure. | |
| 1249 | |
| 1250 Called openp() in FSFmacs. */ | |
| 1251 | |
| 1252 int | |
| 1253 locate_file (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, | |
| 1254 Lisp_Object *storeptr, int mode) | |
| 1255 { | |
| 1256 /* This function can GC */ | |
| 1257 Lisp_Object suffixtab = Qnil; | |
| 2367 | 1258 Lisp_Object pathel_expanded; |
| 428 | 1259 int val; |
| 1260 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
| 1261 | |
| 1262 if (storeptr) | |
| 1263 *storeptr = Qnil; | |
| 1264 | |
| 1265 /* Is it really necessary to gcpro path and str? It shouldn't be | |
| 1266 unless some caller has fucked up. There are known instances that | |
|
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parents:
4844
diff
changeset
|
1267 call us with build_ascstring("foo:bar") as SUFFIXES, though. */ |
| 428 | 1268 GCPRO4 (path, str, suffixes, suffixtab); |
| 1269 | |
| 1270 /* if this filename has directory components, it's too complicated | |
| 1271 to try and use the hash tables. */ | |
| 1272 if (!NILP (Ffile_name_directory (str))) | |
| 1273 { | |
| 1274 val = locate_file_without_hash (path, str, suffixes, storeptr, mode); | |
| 1275 UNGCPRO; | |
| 1276 return val; | |
| 1277 } | |
| 1278 | |
| 1279 suffixtab = locate_file_construct_suffixed_files (str, suffixes); | |
| 1280 | |
| 2367 | 1281 { |
| 1282 EXTERNAL_LIST_LOOP_2 (pathel, path) | |
| 1283 { | |
| 1284 Lisp_Object hash_table; | |
| 1285 int found = 0; | |
| 1286 | |
| 1287 /* If this path element is relative, we have to look by hand. */ | |
| 1288 if (NILP (pathel) || NILP (Ffile_name_absolute_p (pathel))) | |
| 1289 { | |
| 1290 val = locate_file_in_directory (pathel, str, suffixes, storeptr, | |
| 1291 mode); | |
| 1292 if (val >= 0) | |
| 428 | 1293 { |
| 2367 | 1294 UNGCPRO; |
| 1295 return val; | |
| 428 | 1296 } |
| 2367 | 1297 continue; |
| 1298 } | |
| 1299 | |
| 1300 pathel_expanded = Fexpand_file_name (pathel, Qnil); | |
| 1301 hash_table = locate_file_find_directory_hash_table (pathel_expanded); | |
| 1302 | |
| 1303 if (!NILP (hash_table)) | |
| 1304 { | |
| 1305 /* Loop over suffixes. */ | |
| 1306 LIST_LOOP_2 (elt, suffixtab) | |
| 1307 if (!NILP (Fgethash (elt, hash_table, Qnil))) | |
| 1308 { | |
| 1309 found = 1; | |
| 1310 break; | |
| 1311 } | |
| 1312 } | |
| 1313 | |
| 1314 if (found) | |
| 1315 { | |
| 1316 /* This is a likely candidate. Look by hand in this directory | |
| 1317 so we don't get thrown off if someone byte-compiles a file. */ | |
| 1318 val = locate_file_in_directory (pathel, str, suffixes, storeptr, | |
| 1319 mode); | |
| 1320 if (val >= 0) | |
| 1321 { | |
| 1322 UNGCPRO; | |
| 1323 return val; | |
| 1324 } | |
| 1325 | |
| 1326 /* Hmm ... the file isn't actually there. (Or possibly it's | |
| 1327 a directory ...) So refresh our hashing. */ | |
| 1328 locate_file_refresh_hashing (pathel_expanded); | |
| 1329 } | |
| 1330 } | |
| 428 | 1331 } |
| 1332 | |
| 1333 /* File is probably not there, but check the hard way just in case. */ | |
| 1334 val = locate_file_without_hash (path, str, suffixes, storeptr, mode); | |
| 1335 if (val >= 0) | |
| 1336 { | |
| 1337 /* Sneaky user added a file without telling us. */ | |
| 1338 Flocate_file_clear_hashing (path); | |
| 1339 } | |
| 1340 | |
| 1341 UNGCPRO; | |
| 1342 return val; | |
| 1343 } | |
| 1344 | |
| 1345 | |
| 1346 #ifdef LOADHIST | |
| 1347 | |
| 1348 /* Merge the list we've accumulated of globals from the current input source | |
| 1349 into the load_history variable. The details depend on whether | |
| 1350 the source has an associated file name or not. */ | |
| 1351 | |
| 1352 static void | |
| 1353 build_load_history (int loading, Lisp_Object source) | |
| 1354 { | |
| 1355 REGISTER Lisp_Object tail, prev, newelt; | |
| 1356 REGISTER Lisp_Object tem, tem2; | |
| 1357 int foundit; | |
| 1358 | |
| 1359 #if !defined(LOADHIST_DUMPED) | |
| 1360 /* Don't bother recording anything for preloaded files. */ | |
| 1361 if (purify_flag) | |
| 1362 return; | |
| 1363 #endif | |
| 1364 | |
| 1365 tail = Vload_history; | |
| 1366 prev = Qnil; | |
| 1367 foundit = 0; | |
| 1368 while (!NILP (tail)) | |
| 1369 { | |
| 1370 tem = Fcar (tail); | |
| 1371 | |
| 1372 /* Find the feature's previous assoc list... */ | |
| 1373 if (internal_equal (source, Fcar (tem), 0)) | |
| 1374 { | |
| 1375 foundit = 1; | |
| 1376 | |
| 1377 /* If we're loading, remove it. */ | |
| 1378 if (loading) | |
| 1379 { | |
| 1380 if (NILP (prev)) | |
| 1381 Vload_history = Fcdr (tail); | |
| 1382 else | |
| 1383 Fsetcdr (prev, Fcdr (tail)); | |
| 1384 } | |
| 1385 | |
| 1386 /* Otherwise, cons on new symbols that are not already members. */ | |
| 1387 else | |
| 1388 { | |
| 1389 tem2 = Vcurrent_load_list; | |
| 1390 | |
| 1391 while (CONSP (tem2)) | |
| 1392 { | |
| 1393 newelt = XCAR (tem2); | |
| 1394 | |
| 1395 if (NILP (Fmemq (newelt, tem))) | |
| 1396 Fsetcar (tail, Fcons (Fcar (tem), | |
| 1397 Fcons (newelt, Fcdr (tem)))); | |
| 1398 | |
| 1399 tem2 = XCDR (tem2); | |
| 1400 QUIT; | |
| 1401 } | |
| 1402 } | |
| 1403 } | |
| 1404 else | |
| 1405 prev = tail; | |
| 1406 tail = Fcdr (tail); | |
| 1407 QUIT; | |
| 1408 } | |
| 1409 | |
| 1410 /* If we're loading, cons the new assoc onto the front of load-history, | |
| 1411 the most-recently-loaded position. Also do this if we didn't find | |
| 1412 an existing member for the current source. */ | |
| 1413 if (loading || !foundit) | |
| 1414 Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
| 1415 Vload_history); | |
| 1416 } | |
| 1417 | |
| 1418 #else /* !LOADHIST */ | |
| 1419 #define build_load_history(x,y) | |
| 1420 #endif /* !LOADHIST */ | |
| 1421 | |
| 1422 | |
| 1423 static void | |
| 1424 readevalloop (Lisp_Object readcharfun, | |
| 1425 Lisp_Object sourcename, | |
| 1426 Lisp_Object (*evalfun) (Lisp_Object), | |
| 1427 int printflag) | |
| 1428 { | |
| 1429 /* This function can GC */ | |
| 867 | 1430 REGISTER Ichar c; |
| 1849 | 1431 Lisp_Object val = Qnil; |
| 428 | 1432 int speccount = specpdl_depth (); |
| 1433 struct gcpro gcpro1, gcpro2; | |
| 1434 struct buffer *b = 0; | |
| 1435 | |
| 1436 if (BUFFERP (readcharfun)) | |
| 1437 b = XBUFFER (readcharfun); | |
| 1438 else if (MARKERP (readcharfun)) | |
| 1439 b = XMARKER (readcharfun)->buffer; | |
| 1440 | |
| 1441 /* Don't do this. It is not necessary, and it needlessly exposes | |
| 1442 READCHARFUN (which can be a stream) to Lisp. --hniksic */ | |
| 1443 /*specbind (Qstandard_input, readcharfun);*/ | |
| 1444 | |
| 2548 | 1445 internal_bind_lisp_object (&Vcurrent_load_list, Qnil); |
| 428 | 1446 |
| 1447 GCPRO2 (val, sourcename); | |
| 1448 | |
| 1449 LOADHIST_ATTACH (sourcename); | |
| 1450 | |
| 1451 while (1) | |
| 1452 { | |
| 1453 QUIT; | |
| 1454 | |
| 1455 if (b != 0 && !BUFFER_LIVE_P (b)) | |
| 563 | 1456 invalid_operation ("Reading from killed buffer", Qunbound); |
| 428 | 1457 |
| 1458 c = readchar (readcharfun); | |
| 1459 if (c == ';') | |
| 1460 { | |
| 1461 /* Skip comment */ | |
| 1462 while ((c = readchar (readcharfun)) != '\n' && c != -1) | |
| 1463 QUIT; | |
| 1464 continue; | |
| 1465 } | |
| 1466 if (c < 0) | |
| 1467 break; | |
| 1468 | |
| 1469 /* Ignore whitespace here, so we can detect eof. */ | |
| 1470 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
| 1471 continue; | |
| 1472 | |
| 814 | 1473 unreadchar (readcharfun, c); |
| 1474 Vread_objects = Qnil; | |
| 1475 if (NILP (Vload_read_function)) | |
| 1476 val = read0 (readcharfun); | |
| 428 | 1477 else |
| 814 | 1478 val = call1 (Vload_read_function, readcharfun); |
| 428 | 1479 val = (*evalfun) (val); |
| 1480 if (printflag) | |
| 1481 { | |
| 1482 Vvalues = Fcons (val, Vvalues); | |
| 1483 if (EQ (Vstandard_output, Qt)) | |
| 1484 Fprin1 (val, Qnil); | |
| 1485 else | |
| 1486 Fprint (val, Qnil); | |
| 1487 } | |
| 1488 } | |
| 1489 | |
| 1490 build_load_history (LSTREAMP (readcharfun) || | |
| 1491 /* This looks weird, but it's what's in FSFmacs */ | |
| 1492 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)), | |
| 1493 sourcename); | |
| 1494 UNGCPRO; | |
| 1495 | |
| 771 | 1496 unbind_to (speccount); |
| 428 | 1497 } |
| 1498 | |
| 1499 DEFUN ("eval-buffer", Feval_buffer, 0, 2, "bBuffer: ", /* | |
| 1500 Execute BUFFER as Lisp code. | |
| 1501 Programs can pass two arguments, BUFFER and PRINTFLAG. | |
| 1502 BUFFER is the buffer to evaluate (nil means use current buffer). | |
| 1503 PRINTFLAG controls printing of output: | |
| 444 | 1504 nil means discard it; anything else is a stream for printing. |
| 428 | 1505 |
| 1506 If there is no error, point does not move. If there is an error, | |
| 1507 point remains at the end of the last character read from the buffer. | |
| 1508 */ | |
| 444 | 1509 (buffer, printflag)) |
| 428 | 1510 { |
| 1511 /* This function can GC */ | |
| 1512 int speccount = specpdl_depth (); | |
| 1513 Lisp_Object tem, buf; | |
| 1514 | |
| 444 | 1515 if (NILP (buffer)) |
| 428 | 1516 buf = Fcurrent_buffer (); |
| 1517 else | |
| 444 | 1518 buf = Fget_buffer (buffer); |
| 428 | 1519 if (NILP (buf)) |
| 563 | 1520 invalid_argument ("No such buffer", Qunbound); |
| 428 | 1521 |
| 1522 if (NILP (printflag)) | |
| 1523 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */ | |
| 1524 else | |
| 1525 tem = printflag; | |
| 1526 specbind (Qstandard_output, tem); | |
| 1527 record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
| 1528 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
| 1529 readevalloop (buf, XBUFFER (buf)->filename, Feval, | |
| 1530 !NILP (printflag)); | |
| 1531 | |
| 771 | 1532 return unbind_to (speccount); |
| 428 | 1533 } |
| 1534 | |
| 1535 #if 0 | |
| 826 | 1536 DEFUN ("eval-current-buffer", Feval_current_buffer, 0, 1, "", /* |
| 428 | 1537 Execute the current buffer as Lisp code. |
| 1538 Programs can pass argument PRINTFLAG which controls printing of output: | |
| 1539 nil means discard it; anything else is stream for print. | |
| 1540 | |
| 1541 If there is no error, point does not move. If there is an error, | |
| 1542 point remains at the end of the last character read from the buffer. | |
| 1543 */ | |
| 1544 (printflag)) | |
| 1545 { | |
| 1546 code omitted; | |
| 1547 } | |
| 1548 #endif /* 0 */ | |
| 1549 | |
| 1550 DEFUN ("eval-region", Feval_region, 2, 3, "r", /* | |
| 1551 Execute the region as Lisp code. | |
| 444 | 1552 When called from programs, expects two arguments START and END |
| 428 | 1553 giving starting and ending indices in the current buffer |
| 1554 of the text to be executed. | |
| 444 | 1555 Programs can pass third optional argument STREAM which controls output: |
| 428 | 1556 nil means discard it; anything else is stream for printing it. |
| 1557 | |
| 1558 If there is no error, point does not move. If there is an error, | |
| 1559 point remains at the end of the last character read from the buffer. | |
| 1560 | |
| 1561 Note: Before evaling the region, this function narrows the buffer to it. | |
| 1562 If the code being eval'd should happen to trigger a redisplay you may | |
| 1563 see some text temporarily disappear because of this. | |
| 1564 */ | |
| 444 | 1565 (start, end, stream)) |
| 428 | 1566 { |
| 1567 /* This function can GC */ | |
| 1568 int speccount = specpdl_depth (); | |
| 1569 Lisp_Object tem; | |
| 1570 Lisp_Object cbuf = Fcurrent_buffer (); | |
| 1571 | |
| 444 | 1572 if (NILP (stream)) |
| 428 | 1573 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */ |
| 1574 else | |
| 444 | 1575 tem = stream; |
| 428 | 1576 specbind (Qstandard_output, tem); |
| 1577 | |
| 444 | 1578 if (NILP (stream)) |
| 428 | 1579 record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
| 844 | 1580 record_unwind_protect (save_restriction_restore, |
| 1581 save_restriction_save (current_buffer)); | |
| 428 | 1582 |
| 444 | 1583 /* This both uses start and checks its type. */ |
| 1584 Fgoto_char (start, cbuf); | |
|
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1585 Fnarrow_to_region (make_fixnum (BUF_BEGV (current_buffer)), end, cbuf); |
| 428 | 1586 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval, |
| 444 | 1587 !NILP (stream)); |
| 428 | 1588 |
| 771 | 1589 return unbind_to (speccount); |
| 428 | 1590 } |
| 1591 | |
| 1592 DEFUN ("read", Fread, 0, 1, 0, /* | |
| 1593 Read one Lisp expression as text from STREAM, return as Lisp object. | |
| 1594 If STREAM is nil, use the value of `standard-input' (which see). | |
| 1595 STREAM or the value of `standard-input' may be: | |
| 1596 a buffer (read from point and advance it) | |
| 1597 a marker (read from where it points and advance it) | |
| 1598 a function (call it with no arguments for each character, | |
| 1599 call it with a char as argument to push a char back) | |
| 1600 a string (takes text from string, starting at the beginning) | |
| 1601 t (read text line using minibuffer and use it). | |
| 1602 */ | |
| 1603 (stream)) | |
| 1604 { | |
| 1605 if (NILP (stream)) | |
| 1606 stream = Vstandard_input; | |
| 1607 if (EQ (stream, Qt)) | |
| 1608 stream = Qread_char; | |
| 1609 | |
| 1610 Vread_objects = Qnil; | |
| 1611 | |
| 1612 if (EQ (stream, Qread_char)) | |
| 1613 { | |
| 1614 Lisp_Object val = call1 (Qread_from_minibuffer, | |
| 771 | 1615 build_msg_string ("Lisp expression: ")); |
| 428 | 1616 return Fcar (Fread_from_string (val, Qnil, Qnil)); |
| 1617 } | |
| 1618 | |
| 1619 if (STRINGP (stream)) | |
| 1620 return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
| 1621 | |
| 1622 return read0 (stream); | |
| 1623 } | |
| 1624 | |
| 1625 DEFUN ("read-from-string", Fread_from_string, 1, 3, 0, /* | |
| 1626 Read one Lisp expression which is represented as text by STRING. | |
| 1627 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
| 1628 START and END optionally delimit a substring of STRING from which to read; | |
| 1629 they default to 0 and (length STRING) respectively. | |
| 1630 */ | |
| 1631 (string, start, end)) | |
| 1632 { | |
| 1633 Bytecount startval, endval; | |
| 1634 Lisp_Object tem; | |
| 1635 Lisp_Object lispstream = Qnil; | |
| 1636 struct gcpro gcpro1; | |
| 1637 | |
| 1638 GCPRO1 (lispstream); | |
| 1639 CHECK_STRING (string); | |
| 1640 get_string_range_byte (string, start, end, &startval, &endval, | |
| 1641 GB_HISTORICAL_STRING_BEHAVIOR); | |
| 1642 lispstream = make_lisp_string_input_stream (string, startval, | |
| 1643 endval - startval); | |
| 1644 | |
| 1645 Vread_objects = Qnil; | |
| 1646 | |
| 1647 tem = read0 (lispstream); | |
| 1648 /* Yeah, it's ugly. Gonna make something of it? | |
| 1649 At least our reader is reentrant ... */ | |
| 1650 tem = | |
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1651 (Fcons (tem, make_fixnum |
| 793 | 1652 (string_index_byte_to_char |
| 771 | 1653 (string, |
| 428 | 1654 startval + Lstream_byte_count (XLSTREAM (lispstream)))))); |
| 1655 Lstream_delete (XLSTREAM (lispstream)); | |
| 1656 UNGCPRO; | |
| 1657 return tem; | |
| 1658 } | |
| 1659 | |
| 1660 | |
| 1661 | |
| 1662 /* Use this for recursive reads, in contexts where internal tokens | |
| 1663 are not allowed. See also read1(). */ | |
| 1664 static Lisp_Object | |
| 1665 read0 (Lisp_Object readcharfun) | |
| 1666 { | |
| 1667 Lisp_Object val = read1 (readcharfun); | |
| 1668 | |
| 1669 if (CONSP (val) && UNBOUNDP (XCAR (val))) | |
| 1670 { | |
| 867 | 1671 Ichar c = XCHAR (XCDR (val)); |
| 853 | 1672 free_cons (val); |
| 428 | 1673 return Fsignal (Qinvalid_read_syntax, |
| 1674 list1 (Fchar_to_string (make_char (c)))); | |
| 1675 } | |
| 1676 | |
| 1677 return val; | |
| 1678 } | |
| 3543 | 1679 |
| 1680 /* A Unicode escape, as in C# (though we only permit them in strings | |
| 1681 and characters, not arbitrarily in the source code.) */ | |
| 1682 static Ichar | |
| 1683 read_unicode_escape (Lisp_Object readcharfun, int unicode_hex_count) | |
| 1684 { | |
| 1685 REGISTER Ichar i = 0, c; | |
| 1686 REGISTER int count = 0; | |
| 1687 Lisp_Object lisp_char; | |
| 1688 while (++count <= unicode_hex_count) | |
| 1689 { | |
| 1690 c = readchar (readcharfun); | |
| 1691 /* Remember, can't use isdigit(), isalpha() etc. on Ichars */ | |
| 1692 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
| 1693 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
| 1694 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
| 1695 else | |
| 1696 { | |
| 1697 syntax_error ("Non-hex digit used for Unicode escape", | |
| 1698 make_char (c)); | |
| 1699 break; | |
| 1700 } | |
| 1701 } | |
| 1702 | |
| 4268 | 1703 if (i >= 0x110000 || i < 0) |
| 4096 | 1704 { |
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1705 syntax_error ("Not a Unicode code point", make_fixnum(i)); |
| 4096 | 1706 } |
| 1707 | |
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1708 lisp_char = Funicode_to_char(make_fixnum(i), Qnil); |
| 3543 | 1709 |
| 1710 if (EQ(Qnil, lisp_char)) | |
| 1711 { | |
| 4096 | 1712 /* Will happen on non-Mule. Silent corruption is what happens |
| 1713 elsewhere, and we used to do that to be consistent, but GNU error, | |
| 1714 so people writing portable code need to be able to handle that, and | |
| 1715 given a choice I prefer that behaviour. | |
| 1716 | |
| 1717 An undesirable aspect to this error is that the code point is shown | |
| 1718 as a decimal integer, which is mostly unreadable. */ | |
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1719 syntax_error ("Unsupported Unicode code point", make_fixnum(i)); |
| 3543 | 1720 } |
| 4096 | 1721 |
| 1722 return XCHAR(lisp_char); | |
| 3543 | 1723 } |
| 1724 | |
| 428 | 1725 |
| 867 | 1726 static Ichar |
| 428 | 1727 read_escape (Lisp_Object readcharfun) |
| 1728 { | |
| 1729 /* This function can GC */ | |
| 867 | 1730 Ichar c = readchar (readcharfun); |
| 428 | 1731 |
| 1732 if (c < 0) | |
| 563 | 1733 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 1734 |
| 1735 switch (c) | |
| 1736 { | |
| 1737 case 'a': return '\007'; | |
| 1738 case 'b': return '\b'; | |
| 1739 case 'd': return 0177; | |
| 1740 case 'e': return 033; | |
| 1741 case 'f': return '\f'; | |
| 1742 case 'n': return '\n'; | |
| 1743 case 'r': return '\r'; | |
| 1744 case 't': return '\t'; | |
| 1745 case 'v': return '\v'; | |
| 1746 case '\n': return -1; | |
| 1747 | |
| 1748 case 'M': | |
| 1749 c = readchar (readcharfun); | |
| 1750 if (c < 0) | |
| 563 | 1751 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 1752 if (c != '-') |
| 563 | 1753 syntax_error ("Invalid escape character syntax", Qunbound); |
| 428 | 1754 c = readchar (readcharfun); |
| 1755 if (c < 0) | |
| 563 | 1756 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 1757 if (c == '\\') |
| 1758 c = read_escape (readcharfun); | |
| 1759 return c | 0200; | |
| 1760 | |
| 1761 /* Originally, FSF_KEYS provided a degree of FSF Emacs | |
| 1762 compatibility by defining character "modifiers" alt, super, | |
| 1763 hyper and shift to infest the characters (i.e. integers). | |
| 1764 | |
| 1765 However, this doesn't cut it for XEmacs 20, which | |
| 1766 distinguishes characters from integers. Without Mule, ?\H-a | |
| 1767 simply returns ?a because every character is clipped into | |
| 1768 0-255. Under Mule it is much worse -- ?\H-a with FSF_KEYS | |
| 1769 produces an illegal character, and moves us to crash-land. | |
| 1770 | |
| 1771 For these reasons, FSF_KEYS hack is useless and without hope | |
| 1772 of ever working under XEmacs 20. */ | |
| 1773 #ifdef FSF_KEYS | |
| 831 | 1774 /* Deleted */ |
| 1775 #endif | |
| 428 | 1776 |
| 1777 case 'C': | |
| 1778 c = readchar (readcharfun); | |
| 1779 if (c < 0) | |
| 563 | 1780 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 1781 if (c != '-') |
| 563 | 1782 syntax_error ("Invalid escape character syntax", Qunbound); |
| 428 | 1783 case '^': |
| 1784 c = readchar (readcharfun); | |
| 1785 if (c < 0) | |
| 563 | 1786 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 1787 if (c == '\\') |
| 1788 c = read_escape (readcharfun); | |
| 1789 /* FSFmacs junk for non-ASCII controls. | |
| 1790 Not used here. */ | |
| 1791 if (c == '?') | |
| 1792 return 0177; | |
| 1793 else | |
| 1794 return c & (0200 | 037); | |
| 1795 | |
| 1796 case '0': | |
| 1797 case '1': | |
| 1798 case '2': | |
| 1799 case '3': | |
| 1800 case '4': | |
| 1801 case '5': | |
| 1802 case '6': | |
| 1803 case '7': | |
| 1804 /* An octal escape, as in ANSI C. */ | |
| 1805 { | |
| 867 | 1806 REGISTER Ichar i = c - '0'; |
| 428 | 1807 REGISTER int count = 0; |
| 1808 while (++count < 3) | |
| 1809 { | |
| 1810 if ((c = readchar (readcharfun)) >= '0' && c <= '7') | |
| 1811 i = (i << 3) + (c - '0'); | |
| 1812 else | |
| 1813 { | |
| 1814 unreadchar (readcharfun, c); | |
| 1815 break; | |
| 1816 } | |
| 1817 } | |
| 831 | 1818 if (i >= 0400) |
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1819 { |
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1820 read_syntax_error ((Ascbyte *) emacs_sprintf_malloc |
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1821 (NULL, |
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1822 "Non-ISO-8859-1 octal character escape, " |
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1823 "?\\%.3o", i)); |
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1824 } |
| 428 | 1825 return i; |
| 1826 } | |
| 1827 | |
| 1828 case 'x': | |
| 1829 /* A hex escape, as in ANSI C, except that we only allow latin-1 | |
| 1830 characters to be read this way. What is "\x4e03" supposed to | |
| 1831 mean, anyways, if the internal representation is hidden? | |
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1832 This is also consistent with the treatment of octal escapes. |
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1833 |
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1834 Note that we don't accept ?\XAB as specifying the character with |
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1835 numeric value 171; it must be ?\xAB. */ |
| 428 | 1836 { |
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1837 #define OVERLONG_INFO "Overlong hex character escape, ?\\x" |
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1838 |
| 867 | 1839 REGISTER Ichar i = 0; |
| 428 | 1840 REGISTER int count = 0; |
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1841 Ascbyte seen[] = OVERLONG_INFO "\0\0\0\0\0"; |
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1842 REGISTER Ascbyte *seenp = seen + sizeof (OVERLONG_INFO) - 1; |
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1843 |
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1844 #undef OVERLONG_INFO |
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1845 |
| 428 | 1846 while (++count <= 2) |
| 1847 { | |
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changeset
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1848 c = readchar (readcharfun), *seenp = c, ++seenp; |
| 867 | 1849 /* Remember, can't use isdigit(), isalpha() etc. on Ichars */ |
| 428 | 1850 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); |
| 1851 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
| 1852 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
| 1853 else | |
| 1854 { | |
| 1855 unreadchar (readcharfun, c); | |
| 1856 break; | |
| 1857 } | |
| 1858 } | |
|
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Error on over-long hex character escapes.
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diff
changeset
|
1859 |
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7869173584fc
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diff
changeset
|
1860 if (count == 3) |
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7869173584fc
Error on over-long hex character escapes.
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diff
changeset
|
1861 { |
|
5247
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parents:
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|
1862 c = readchar (readcharfun), *seenp = c, ++seenp; |
|
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1863 if ((c >= '0' && c <= '9') || |
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changeset
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1864 (c >= 'a' && c <= 'f') || |
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changeset
|
1865 (c >= 'A' && c <= 'F')) |
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Error on over-long hex character escapes.
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1866 { |
|
5247
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changeset
|
1867 read_syntax_error (seen); |
|
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|
1868 } |
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1869 unreadchar (readcharfun, c); |
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1870 } |
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|
1871 |
| 428 | 1872 return i; |
| 1873 } | |
| 3367 | 1874 case 'U': |
| 1875 /* Post-Unicode-2.0: Up to eight hex chars */ | |
| 3543 | 1876 return read_unicode_escape(readcharfun, 8); |
| 3367 | 1877 case 'u': |
| 3543 | 1878 /* Unicode-2.0 and before; four hex chars. */ |
| 1879 return read_unicode_escape(readcharfun, 4); | |
| 428 | 1880 |
| 1881 default: | |
| 1882 return c; | |
| 1883 } | |
| 1884 } | |
| 1885 | |
| 1886 | |
| 1887 | |
| 1888 /* read symbol-constituent stuff into `Vread_buffer_stream'. */ | |
| 1889 static Bytecount | |
| 867 | 1890 read_atom_0 (Lisp_Object readcharfun, Ichar firstchar, int *saw_a_backslash) |
| 428 | 1891 { |
| 1892 /* This function can GC */ | |
| 867 | 1893 Ichar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun)); |
| 428 | 1894 Lstream_rewind (XLSTREAM (Vread_buffer_stream)); |
| 1895 | |
| 1896 *saw_a_backslash = 0; | |
| 1897 | |
| 1898 while (c > 040 /* #### - comma should be here as should backquote */ | |
| 1899 && !(c == '\"' || c == '\'' || c == ';' | |
| 1900 || c == '(' || c == ')' | |
| 1901 || c == '[' || c == ']' || c == '#' | |
| 1902 )) | |
| 1903 { | |
| 1904 if (c == '\\') | |
| 1905 { | |
| 1906 c = readchar (readcharfun); | |
| 1907 if (c < 0) | |
| 563 | 1908 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 1909 *saw_a_backslash = 1; |
| 1910 } | |
| 867 | 1911 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), c); |
| 428 | 1912 QUIT; |
| 1913 c = readchar (readcharfun); | |
| 1914 } | |
| 1915 | |
| 1916 if (c >= 0) | |
| 1917 unreadchar (readcharfun, c); | |
| 1918 /* blasted terminating 0 */ | |
| 867 | 1919 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), 0); |
| 428 | 1920 Lstream_flush (XLSTREAM (Vread_buffer_stream)); |
| 1921 | |
| 1922 return Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1; | |
| 1923 } | |
| 1924 | |
| 867 | 1925 static Lisp_Object parse_integer (const Ibyte *buf, Bytecount len, int base); |
| 428 | 1926 |
| 1927 static Lisp_Object | |
| 1928 read_atom (Lisp_Object readcharfun, | |
| 867 | 1929 Ichar firstchar, |
| 428 | 1930 int uninterned_symbol) |
| 1931 { | |
| 1932 /* This function can GC */ | |
| 1933 int saw_a_backslash; | |
| 1934 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash); | |
| 1935 char *read_ptr = (char *) | |
| 1936 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)); | |
| 1937 | |
| 1938 /* Is it an integer? */ | |
| 1939 if (! (saw_a_backslash || uninterned_symbol)) | |
| 1940 { | |
| 1941 /* If a token had any backslashes in it, it is disqualified from | |
| 1942 being an integer or a float. This means that 123\456 is a | |
| 1943 symbol, as is \123 (which is the way (intern "123") prints). | |
| 1944 Also, if token was preceded by #:, it's always a symbol. | |
| 1945 */ | |
| 1946 char *p = read_ptr + len; | |
| 1947 char *p1 = read_ptr; | |
| 1948 | |
| 1949 if (*p1 == '+' || *p1 == '-') p1++; | |
| 1950 if (p1 != p) | |
| 1951 { | |
| 1952 int c; | |
| 1953 | |
| 1954 while (p1 != p && (c = *p1) >= '0' && c <= '9') | |
| 1955 p1++; | |
| 1956 /* Integers can have trailing decimal points. */ | |
| 1957 if (p1 > read_ptr && p1 < p && *p1 == '.') | |
| 1958 p1++; | |
| 1959 if (p1 == p) | |
| 1960 { | |
| 1961 /* It is an integer. */ | |
| 1962 if (p1[-1] == '.') | |
| 1963 p1[-1] = '\0'; | |
| 1964 #if 0 | |
| 1965 { | |
| 1966 int number = 0; | |
| 1967 if (sizeof (int) == sizeof (EMACS_INT)) | |
| 1968 number = atoi (read_buffer); | |
| 1969 else if (sizeof (long) == sizeof (EMACS_INT)) | |
| 1970 number = atol (read_buffer); | |
| 1971 else | |
| 2500 | 1972 ABORT (); |
|
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1973 return make_fixnum (number); |
| 428 | 1974 } |
| 1975 #else | |
| 867 | 1976 return parse_integer ((Ibyte *) read_ptr, len, 10); |
| 428 | 1977 #endif |
| 1978 } | |
| 1979 } | |
| 1983 | 1980 #ifdef HAVE_RATIO |
| 1981 if (isratio_string (read_ptr)) | |
| 1982 { | |
| 2013 | 1983 /* GMP ratio_set_string has no effect with initial + sign */ |
| 2010 | 1984 if (*read_ptr == '+') |
| 1985 read_ptr++; | |
| 1983 | 1986 ratio_set_string (scratch_ratio, read_ptr, 0); |
|
5088
207dad9e74f7
Signal an error upon reading 1/0.
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parents:
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diff
changeset
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1987 if (bignum_sign (ratio_denominator (scratch_ratio)) != 0) { |
|
207dad9e74f7
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1988 ratio_canonicalize (scratch_ratio); |
|
207dad9e74f7
Signal an error upon reading 1/0.
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parents:
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1989 return Fcanonicalize_number (make_ratio_rt (scratch_ratio)); |
|
207dad9e74f7
Signal an error upon reading 1/0.
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1990 } |
|
207dad9e74f7
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1991 return Fsignal (Qinvalid_read_syntax, |
|
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Signal an error upon reading 1/0.
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|
1992 list2 (build_msg_string |
|
207dad9e74f7
Signal an error upon reading 1/0.
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changeset
|
1993 ("Invalid ratio constant in reader"), |
|
207dad9e74f7
Signal an error upon reading 1/0.
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|
1994 make_string ((Ibyte *) read_ptr, len))); |
| 1983 | 1995 } |
| 1996 #endif | |
| 428 | 1997 if (isfloat_string (read_ptr)) |
| 1998 return make_float (atof (read_ptr)); | |
| 1999 } | |
| 2000 | |
| 2001 { | |
| 2002 Lisp_Object sym; | |
| 2003 if (uninterned_symbol) | |
| 867 | 2004 sym = Fmake_symbol ( make_string ((Ibyte *) read_ptr, len)); |
| 428 | 2005 else |
| 2006 { | |
| 867 | 2007 Lisp_Object name = make_string ((Ibyte *) read_ptr, len); |
| 428 | 2008 sym = Fintern (name, Qnil); |
| 2009 } | |
| 2010 return sym; | |
| 2011 } | |
| 2012 } | |
| 2013 | |
| 2014 | |
| 2015 static Lisp_Object | |
| 867 | 2016 parse_integer (const Ibyte *buf, Bytecount len, int base) |
| 428 | 2017 { |
| 867 | 2018 const Ibyte *lim = buf + len; |
| 2019 const Ibyte *p = buf; | |
| 428 | 2020 EMACS_UINT num = 0; |
| 2021 int negativland = 0; | |
| 2022 | |
| 2023 if (*p == '-') | |
| 2024 { | |
| 2025 negativland = 1; | |
| 2026 p++; | |
| 2027 } | |
| 2028 else if (*p == '+') | |
| 2029 { | |
| 2030 p++; | |
|
5489
159face738c3
Never pass a leading + to mpz_set_string, parse_integer ().
Aidan Kehoe <kehoea@parhasard.net>
parents:
5438
diff
changeset
|
2031 /* GMP deals with a leading plus sign, badly, make sure it doesn't see |
|
159face738c3
Never pass a leading + to mpz_set_string, parse_integer ().
Aidan Kehoe <kehoea@parhasard.net>
parents:
5438
diff
changeset
|
2032 it. */ |
|
159face738c3
Never pass a leading + to mpz_set_string, parse_integer ().
Aidan Kehoe <kehoea@parhasard.net>
parents:
5438
diff
changeset
|
2033 buf++; |
| 428 | 2034 } |
| 2035 | |
| 2036 if (p == lim) | |
| 2037 goto loser; | |
| 2038 | |
| 2039 for (; (p < lim) && (*p != '\0'); p++) | |
| 2040 { | |
| 2041 int c = *p; | |
| 2042 EMACS_UINT onum; | |
| 2043 | |
| 2044 if (isdigit (c)) | |
| 2045 c = c - '0'; | |
| 2046 else if (isupper (c)) | |
| 2047 c = c - 'A' + 10; | |
| 2048 else if (islower (c)) | |
| 2049 c = c - 'a' + 10; | |
| 2050 else | |
| 2051 goto loser; | |
| 2052 | |
| 2053 if (c < 0 || c >= base) | |
| 2054 goto loser; | |
| 2055 | |
| 2056 onum = num; | |
| 2057 num = num * base + c; | |
| 2058 if (num < onum) | |
| 2059 goto overflow; | |
| 2060 } | |
| 2061 | |
| 2062 { | |
| 2063 EMACS_INT int_result = negativland ? - (EMACS_INT) num : (EMACS_INT) num; | |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
2064 Lisp_Object result = make_fixnum (int_result); |
|
56144c8593a8
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
2065 if (num && ((XFIXNUM (result) < 0) != negativland)) |
| 428 | 2066 goto overflow; |
|
5581
56144c8593a8
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
2067 if (XFIXNUM (result) != int_result) |
| 428 | 2068 goto overflow; |
| 2069 return result; | |
| 2070 } | |
| 2071 overflow: | |
| 1983 | 2072 #ifdef HAVE_BIGNUM |
| 2073 { | |
|
4329
d9eb5ea14f65
Provide %b in #'format; use it for converting between ints and bit vectors.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4268
diff
changeset
|
2074 bignum_set_string (scratch_bignum, (const char *) buf, base); |
| 1983 | 2075 return make_bignum_bg (scratch_bignum); |
| 2076 } | |
| 2077 #else | |
| 428 | 2078 return Fsignal (Qinvalid_read_syntax, |
| 771 | 2079 list3 (build_msg_string |
| 428 | 2080 ("Integer constant overflow in reader"), |
| 2081 make_string (buf, len), | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
2082 make_fixnum (base))); |
| 1983 | 2083 #endif /* HAVE_BIGNUM */ |
| 428 | 2084 loser: |
| 2085 return Fsignal (Qinvalid_read_syntax, | |
| 771 | 2086 list3 (build_msg_string |
| 428 | 2087 ("Invalid integer constant in reader"), |
| 2088 make_string (buf, len), | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
2089 make_fixnum (base))); |
| 428 | 2090 } |
| 2091 | |
| 2092 | |
| 2093 static Lisp_Object | |
| 2094 read_integer (Lisp_Object readcharfun, int base) | |
| 2095 { | |
| 2096 /* This function can GC */ | |
| 2097 int saw_a_backslash; | |
| 2098 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash); | |
| 2099 return (parse_integer | |
| 2100 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)), | |
| 2101 ((saw_a_backslash) | |
| 2102 ? 0 /* make parse_integer signal error */ | |
| 2103 : len), | |
| 2104 base)); | |
| 2105 } | |
| 2106 | |
| 2107 static Lisp_Object | |
| 2108 read_bit_vector (Lisp_Object readcharfun) | |
| 2109 { | |
| 2110 unsigned_char_dynarr *dyn = Dynarr_new (unsigned_char); | |
| 440 | 2111 Lisp_Object val; |
| 428 | 2112 |
| 2113 while (1) | |
| 2114 { | |
| 444 | 2115 unsigned char bit; |
| 867 | 2116 Ichar c = readchar (readcharfun); |
| 444 | 2117 if (c == '0') |
| 2118 bit = 0; | |
| 2119 else if (c == '1') | |
| 2120 bit = 1; | |
| 2121 else | |
| 2122 { | |
| 2123 if (c >= 0) | |
| 2124 unreadchar (readcharfun, c); | |
| 2125 break; | |
| 2126 } | |
| 2127 Dynarr_add (dyn, bit); | |
| 428 | 2128 } |
| 2129 | |
| 4967 | 2130 val = make_bit_vector_from_byte_vector (Dynarr_begin (dyn), |
| 440 | 2131 Dynarr_length (dyn)); |
| 2132 Dynarr_free (dyn); | |
| 2133 | |
| 2134 return val; | |
| 428 | 2135 } |
| 2136 | |
| 2137 | |
| 2138 | |
| 2139 /* structures */ | |
| 2140 | |
| 2141 struct structure_type * | |
| 2142 define_structure_type (Lisp_Object type, | |
| 2143 int (*validate) (Lisp_Object data, | |
| 578 | 2144 Error_Behavior errb), |
| 428 | 2145 Lisp_Object (*instantiate) (Lisp_Object data)) |
| 2146 { | |
| 2147 struct structure_type st; | |
| 2148 | |
| 2149 st.type = type; | |
| 2150 st.keywords = Dynarr_new (structure_keyword_entry); | |
| 2151 st.validate = validate; | |
| 2152 st.instantiate = instantiate; | |
| 2153 Dynarr_add (the_structure_type_dynarr, st); | |
| 2154 | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4677
diff
changeset
|
2155 return Dynarr_lastp (the_structure_type_dynarr); |
| 428 | 2156 } |
| 2157 | |
| 2158 void | |
| 2159 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword, | |
| 2160 int (*validate) (Lisp_Object keyword, | |
| 2161 Lisp_Object value, | |
| 578 | 2162 Error_Behavior errb)) |
| 428 | 2163 { |
| 2164 struct structure_keyword_entry en; | |
| 2165 | |
| 2166 en.keyword = keyword; | |
| 2167 en.validate = validate; | |
| 2168 Dynarr_add (st->keywords, en); | |
| 2169 } | |
| 2170 | |
| 2171 static struct structure_type * | |
| 2172 recognized_structure_type (Lisp_Object type) | |
| 2173 { | |
| 2174 int i; | |
| 2175 | |
| 2176 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++) | |
| 2177 { | |
| 2178 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i); | |
| 2179 if (EQ (st->type, type)) | |
| 2180 return st; | |
| 2181 } | |
| 2182 | |
| 2183 return 0; | |
| 2184 } | |
| 2185 | |
| 2186 static Lisp_Object | |
| 2187 read_structure (Lisp_Object readcharfun) | |
| 2188 { | |
| 867 | 2189 Ichar c = readchar (readcharfun); |
| 428 | 2190 Lisp_Object list = Qnil; |
| 2191 Lisp_Object orig_list = Qnil; | |
| 2192 Lisp_Object already_seen = Qnil; | |
| 2193 int keyword_count; | |
| 2194 struct structure_type *st; | |
| 2195 struct gcpro gcpro1, gcpro2; | |
| 2196 | |
| 2197 GCPRO2 (orig_list, already_seen); | |
| 2198 if (c != '(') | |
| 442 | 2199 RETURN_UNGCPRO (continuable_read_syntax_error ("#s not followed by paren")); |
| 428 | 2200 list = read_list (readcharfun, ')', 0, 0); |
| 2201 orig_list = list; | |
| 2202 { | |
|
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5560
diff
changeset
|
2203 int len = XFIXNUM (Flength (list)); |
| 428 | 2204 if (len == 0) |
| 442 | 2205 RETURN_UNGCPRO (continuable_read_syntax_error |
| 428 | 2206 ("structure type not specified")); |
| 2207 if (!(len & 1)) | |
| 2208 RETURN_UNGCPRO | |
| 442 | 2209 (continuable_read_syntax_error |
| 428 | 2210 ("structures must have alternating keyword/value pairs")); |
| 2211 } | |
| 2212 | |
| 2213 st = recognized_structure_type (XCAR (list)); | |
| 2214 if (!st) | |
| 2215 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax, | |
| 771 | 2216 list2 (build_msg_string |
| 428 | 2217 ("unrecognized structure type"), |
| 2218 XCAR (list)))); | |
| 2219 | |
| 2220 list = Fcdr (list); | |
| 2221 keyword_count = Dynarr_length (st->keywords); | |
| 2222 while (!NILP (list)) | |
| 2223 { | |
| 2224 Lisp_Object keyword, value; | |
| 2225 int i; | |
| 2226 struct structure_keyword_entry *en = NULL; | |
| 2227 | |
| 2228 keyword = Fcar (list); | |
| 2229 list = Fcdr (list); | |
| 2230 value = Fcar (list); | |
| 2231 list = Fcdr (list); | |
| 2232 | |
| 2233 if (!NILP (memq_no_quit (keyword, already_seen))) | |
| 2234 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax, | |
| 771 | 2235 list2 (build_msg_string |
| 428 | 2236 ("structure keyword already seen"), |
| 2237 keyword))); | |
| 2238 | |
| 2239 for (i = 0; i < keyword_count; i++) | |
| 2240 { | |
| 2241 en = Dynarr_atp (st->keywords, i); | |
| 2242 if (EQ (keyword, en->keyword)) | |
| 2243 break; | |
| 2244 } | |
| 2245 | |
| 2246 if (i == keyword_count) | |
| 2247 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax, | |
| 771 | 2248 list2 (build_msg_string |
| 428 | 2249 ("unrecognized structure keyword"), |
| 2250 keyword))); | |
| 2251 | |
| 2252 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME)) | |
| 2253 RETURN_UNGCPRO | |
| 2254 (Fsignal (Qinvalid_read_syntax, | |
| 771 | 2255 list3 (build_msg_string |
| 428 | 2256 ("invalid value for structure keyword"), |
| 2257 keyword, value))); | |
| 2258 | |
| 2259 already_seen = Fcons (keyword, already_seen); | |
| 2260 } | |
| 2261 | |
| 2262 if (st->validate && ! (st->validate) (orig_list, ERROR_ME)) | |
| 2263 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax, | |
| 771 | 2264 list2 (build_msg_string |
| 428 | 2265 ("invalid structure initializer"), |
| 2266 orig_list))); | |
| 2267 | |
| 2268 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list))); | |
| 2269 } | |
| 2270 | |
| 2271 | |
| 2272 static Lisp_Object read_compiled_function (Lisp_Object readcharfun, | |
| 2273 int terminator); | |
| 2274 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator); | |
| 2275 | |
| 2276 /* Get the next character; filter out whitespace and comments */ | |
| 2277 | |
| 867 | 2278 static Ichar |
| 428 | 2279 reader_nextchar (Lisp_Object readcharfun) |
| 2280 { | |
| 2281 /* This function can GC */ | |
| 867 | 2282 Ichar c; |
| 428 | 2283 |
| 2284 retry: | |
| 2285 QUIT; | |
| 2286 c = readchar (readcharfun); | |
| 2287 if (c < 0) | |
| 563 | 2288 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); |
| 428 | 2289 |
| 2290 switch (c) | |
| 2291 { | |
| 2292 default: | |
| 2293 { | |
| 2294 /* Ignore whitespace and control characters */ | |
| 2295 if (c <= 040) | |
| 2296 goto retry; | |
| 2297 return c; | |
| 2298 } | |
| 2299 | |
| 2300 case ';': | |
| 2301 { | |
| 2302 /* Comment */ | |
| 2303 while ((c = readchar (readcharfun)) >= 0 && c != '\n') | |
| 2304 QUIT; | |
| 2305 goto retry; | |
| 2306 } | |
| 2307 } | |
| 2308 } | |
| 2309 | |
| 2310 #if 0 | |
| 2311 static Lisp_Object | |
| 2312 list2_pure (int pure, Lisp_Object a, Lisp_Object b) | |
| 2313 { | |
| 2314 return pure ? pure_cons (a, pure_cons (b, Qnil)) : list2 (a, b); | |
| 2315 } | |
| 2316 #endif | |
| 2317 | |
| 3543 | 2318 static Lisp_Object |
| 2319 read_string (Lisp_Object readcharfun, Ichar delim, int raw, | |
| 2320 int honor_unicode) | |
| 2321 { | |
| 2322 #ifdef I18N3 | |
| 2323 /* #### If the input stream is translating, then the string | |
| 2324 should be marked as translatable by setting its | |
| 2325 `string-translatable' property to t. .el and .elc files | |
| 2326 normally are translating input streams. See Fgettext() | |
| 2327 and print_internal(). */ | |
| 2328 #endif | |
| 2329 Ichar c; | |
| 2330 int cancel = 0; | |
| 2331 | |
| 2332 Lstream_rewind(XLSTREAM(Vread_buffer_stream)); | |
| 2333 while ((c = readchar(readcharfun)) >= 0 && c != delim) | |
| 2334 { | |
| 2335 if (c == '\\') | |
| 2336 { | |
| 2337 if (raw) | |
| 2338 { | |
| 2339 c = readchar(readcharfun); | |
| 2340 if (honor_unicode && ('u' == c || 'U' == c)) | |
| 2341 { | |
| 2342 c = read_unicode_escape(readcharfun, | |
| 2343 'U' == c ? 8 : 4); | |
| 2344 } | |
| 2345 else | |
| 2346 { | |
| 2347 /* For raw strings, insert the | |
| 2348 backslash and the next char, */ | |
| 2349 Lstream_put_ichar(XLSTREAM | |
| 2350 (Vread_buffer_stream), | |
| 2351 '\\'); | |
| 2352 } | |
| 2353 } | |
| 2354 else | |
| 2355 /* otherwise, backslash escapes the next char. */ | |
| 2356 c = read_escape(readcharfun); | |
| 2357 } | |
| 2358 /* c is -1 if \ newline has just been seen */ | |
| 2359 if (c == -1) | |
| 2360 { | |
| 2361 if (Lstream_byte_count | |
| 2362 (XLSTREAM(Vread_buffer_stream)) == | |
| 2363 0) | |
| 2364 cancel = 1; | |
| 2365 } | |
| 2366 else | |
| 2367 Lstream_put_ichar(XLSTREAM | |
| 2368 (Vread_buffer_stream), | |
| 2369 c); | |
| 2370 QUIT; | |
| 2371 } | |
| 2372 if (c < 0) | |
| 2373 return Fsignal(Qend_of_file, | |
| 2374 list1(READCHARFUN_MAYBE(readcharfun))); | |
| 2375 | |
| 2376 /* If purifying, and string starts with \ newline, | |
| 2377 return zero instead. This is for doc strings | |
| 2378 that we are really going to find in lib-src/DOC.nn.nn */ | |
| 2379 if (purify_flag && NILP(Vinternal_doc_file_name) | |
| 2380 && cancel) | |
| 2381 return Qzero; | |
| 2382 | |
| 2383 Lstream_flush(XLSTREAM(Vread_buffer_stream)); | |
| 2384 return make_string(resizing_buffer_stream_ptr | |
| 2385 (XLSTREAM(Vread_buffer_stream)), | |
| 2386 Lstream_byte_count(XLSTREAM(Vread_buffer_stream))); | |
| 2387 } | |
| 2388 | |
| 2389 static Lisp_Object | |
| 2390 read_raw_string (Lisp_Object readcharfun) | |
| 2391 { | |
| 2392 Ichar c; | |
| 2393 Ichar permit_unicode = 0; | |
| 2394 | |
|
4952
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Ben Wing <ben@xemacs.org>
parents:
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diff
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|
2395 do |
|
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|
2396 { |
|
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|
2397 c = reader_nextchar (readcharfun); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
2398 switch (c) |
|
19a72041c5ed
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|
2399 { |
|
19a72041c5ed
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changeset
|
2400 /* #r:engine"my sexy raw string" -- raw string w/ flags*/ |
|
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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changeset
|
2401 /* case ':': */ |
|
19a72041c5ed
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changeset
|
2402 /* #ru"Hi there\u20AC \U000020AC" -- raw string, honouring Unicode. */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
2403 case 'u': |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2404 case 'U': |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2405 permit_unicode = c; |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2406 continue; |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2407 |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2408 /* #r"my raw string" -- raw string */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2409 case '\"': |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2410 return read_string (readcharfun, '\"', 1, permit_unicode); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2411 /* invalid syntax */ |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2412 default: |
| 3543 | 2413 { |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
changeset
|
2414 if (permit_unicode) |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2415 { |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2416 unreadchar (readcharfun, permit_unicode); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2417 } |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2418 unreadchar (readcharfun, c); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2419 return Fsignal (Qinvalid_read_syntax, |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2420 list1 (build_msg_string |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2421 ("unrecognized raw string syntax"))); |
| 3543 | 2422 } |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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diff
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|
2423 } |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
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diff
changeset
|
2424 } while (1); |
| 3543 | 2425 } |
| 2426 | |
| 428 | 2427 /* Read the next Lisp object from the stream READCHARFUN and return it. |
| 2428 If the return value is a cons whose car is Qunbound, then read1() | |
| 2429 encountered a misplaced token (e.g. a right bracket, right paren, | |
| 2430 or dot followed by a non-number). To filter this stuff out, | |
| 2431 use read0(). */ | |
| 2432 | |
| 2433 static Lisp_Object | |
| 2434 read1 (Lisp_Object readcharfun) | |
| 2435 { | |
| 867 | 2436 Ichar c; |
| 428 | 2437 |
| 2438 retry: | |
| 2439 c = reader_nextchar (readcharfun); | |
| 2440 | |
| 2441 switch (c) | |
| 2442 { | |
| 2443 case '(': | |
| 2444 { | |
| 2445 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */ | |
| 2446 /* if this is disabled, then other code in eval.c must be enabled */ | |
| 867 | 2447 Ichar ch = reader_nextchar (readcharfun); |
| 428 | 2448 switch (ch) |
| 2449 { | |
| 2450 case '`': | |
| 2451 { | |
| 2452 Lisp_Object tem; | |
| 853 | 2453 int speccount = internal_bind_int (&old_backquote_flag, |
| 2454 1 + old_backquote_flag); | |
| 428 | 2455 tem = read0 (readcharfun); |
| 771 | 2456 unbind_to (speccount); |
| 428 | 2457 ch = reader_nextchar (readcharfun); |
| 2458 if (ch != ')') | |
| 2459 { | |
| 2460 unreadchar (readcharfun, ch); | |
| 2461 return Fsignal (Qinvalid_read_syntax, | |
| 771 | 2462 list1 (build_msg_string |
| 428 | 2463 ("Weird old-backquote syntax"))); |
| 2464 } | |
| 2465 return list2 (Qbacktick, tem); | |
| 2466 } | |
| 2467 case ',': | |
| 2468 { | |
| 2469 if (old_backquote_flag) | |
| 2470 { | |
| 2471 Lisp_Object tem, comma_type; | |
| 2472 ch = readchar (readcharfun); | |
| 2473 if (ch == '@') | |
| 2474 comma_type = Qcomma_at; | |
| 2475 else | |
| 2476 { | |
| 2477 if (ch >= 0) | |
| 2478 unreadchar (readcharfun, ch); | |
| 2479 comma_type = Qcomma; | |
| 2480 } | |
| 2481 tem = read0 (readcharfun); | |
| 2482 ch = reader_nextchar (readcharfun); | |
| 2483 if (ch != ')') | |
| 2484 { | |
| 2485 unreadchar (readcharfun, ch); | |
| 2486 return Fsignal (Qinvalid_read_syntax, | |
| 771 | 2487 list1 (build_msg_string |
| 428 | 2488 ("Weird old-backquote syntax"))); |
| 2489 } | |
| 2490 return list2 (comma_type, tem); | |
| 2491 } | |
| 2492 else | |
| 2493 { | |
| 2494 unreadchar (readcharfun, ch); | |
| 2495 #if 0 | |
| 2496 return Fsignal (Qinvalid_read_syntax, | |
| 771 | 2497 list1 (build_msg_string ("Comma outside of backquote"))); |
| 428 | 2498 #else |
| 2499 /* #### - yuck....but this is reverse compatible. */ | |
| 2500 /* mostly this is required by edebug, which does its own | |
| 2501 annotated reading. We need to have an annotated_read | |
| 2502 function that records (with markers) the buffer | |
| 2503 positions of the elements that make up lists, then that | |
| 2504 can be used in edebug and bytecomp and the check above | |
| 2505 can go back in. --Stig */ | |
| 2506 break; | |
| 2507 #endif | |
| 2508 } | |
| 2509 } | |
| 2510 default: | |
| 2511 unreadchar (readcharfun, ch); | |
| 2512 } /* switch(ch) */ | |
| 2513 #endif /* old backquote crap... */ | |
| 2514 return read_list (readcharfun, ')', 1, 1); | |
| 2515 } | |
| 2516 case '[': | |
| 2517 return read_vector (readcharfun, ']'); | |
| 2518 | |
| 2519 case ')': | |
| 2520 case ']': | |
| 2521 /* #### - huh? these don't do what they seem... */ | |
| 2522 return noseeum_cons (Qunbound, make_char (c)); | |
| 2523 case '.': | |
| 2524 { | |
| 2525 /* If a period is followed by a number, then we should read it | |
| 2526 as a floating point number. Otherwise, it denotes a dotted | |
| 2527 pair. | |
| 2528 */ | |
| 2529 c = readchar (readcharfun); | |
| 2530 unreadchar (readcharfun, c); | |
| 2531 | |
| 867 | 2532 /* Can't use isdigit on Ichars */ |
| 428 | 2533 if (c < '0' || c > '9') |
| 2534 return noseeum_cons (Qunbound, make_char ('.')); | |
| 2535 | |
| 2536 /* Note that read_atom will loop | |
| 2537 at least once, assuring that we will not try to UNREAD | |
| 2538 two characters in a row. | |
| 2539 (I think this doesn't matter anymore because there should | |
| 2540 be no more danger in unreading multiple characters) */ | |
| 2541 return read_atom (readcharfun, '.', 0); | |
| 2542 } | |
| 2543 | |
| 2544 case '#': | |
| 2545 { | |
| 2546 c = readchar (readcharfun); | |
| 2547 switch (c) | |
| 2548 { | |
| 2549 #if 0 /* FSFmacs silly char-table syntax */ | |
| 2550 case '^': | |
| 2551 #endif | |
| 2552 #if 0 /* FSFmacs silly bool-vector syntax */ | |
| 2553 case '&': | |
| 2554 #endif | |
| 2555 /* "#["-- byte-code constant syntax */ | |
| 2556 /* purecons #[...] syntax */ | |
| 2557 case '[': return read_compiled_function (readcharfun, ']' | |
| 2558 /*, purify_flag */ ); | |
| 2559 /* "#:"-- gensym syntax */ | |
| 2560 case ':': return read_atom (readcharfun, -1, 1); | |
| 2561 /* #'x => (function x) */ | |
| 2562 case '\'': return list2 (Qfunction, read0 (readcharfun)); | |
| 2563 #if 0 | |
| 2564 /* RMS uses this syntax for fat-strings. | |
| 2565 If we use it for vectors, then obscure bugs happen. | |
| 2566 */ | |
| 2567 /* "#(" -- Scheme/CL vector syntax */ | |
| 2568 case '(': return read_vector (readcharfun, ')'); | |
| 2569 #endif | |
| 2570 #if 0 /* FSFmacs */ | |
| 2571 case '(': | |
| 2572 { | |
| 2573 Lisp_Object tmp; | |
| 2574 struct gcpro gcpro1; | |
| 2575 | |
| 2576 /* Read the string itself. */ | |
| 2577 tmp = read1 (readcharfun); | |
| 2578 if (!STRINGP (tmp)) | |
| 2579 { | |
| 2580 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp))) | |
| 853 | 2581 free_cons (tmp); |
| 428 | 2582 return Fsignal (Qinvalid_read_syntax, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2583 list1 (build_ascstring ("#"))); |
| 428 | 2584 } |
| 2585 GCPRO1 (tmp); | |
| 2586 /* Read the intervals and their properties. */ | |
| 2587 while (1) | |
| 2588 { | |
| 2589 Lisp_Object beg, end, plist; | |
| 867 | 2590 Ichar ch; |
| 428 | 2591 int invalid = 0; |
| 2592 | |
| 2593 beg = read1 (readcharfun); | |
| 2594 if (CONSP (beg) && UNBOUNDP (XCAR (beg))) | |
| 2595 { | |
| 2596 ch = XCHAR (XCDR (beg)); | |
| 853 | 2597 free_cons (beg); |
| 428 | 2598 if (ch == ')') |
| 2599 break; | |
| 2600 else | |
| 2601 invalid = 1; | |
| 2602 } | |
| 2603 if (!invalid) | |
| 2604 { | |
| 2605 end = read1 (readcharfun); | |
| 2606 if (CONSP (end) && UNBOUNDP (XCAR (end))) | |
| 2607 { | |
| 853 | 2608 free_cons (end); |
| 428 | 2609 invalid = 1; |
| 2610 } | |
| 2611 } | |
| 2612 if (!invalid) | |
| 2613 { | |
| 2614 plist = read1 (readcharfun); | |
| 2615 if (CONSP (plist) && UNBOUNDP (XCAR (plist))) | |
| 2616 { | |
| 853 | 2617 free_cons (plist); |
| 428 | 2618 invalid = 1; |
| 2619 } | |
| 2620 } | |
| 2621 if (invalid) | |
| 2622 RETURN_UNGCPRO | |
| 2623 (Fsignal (Qinvalid_read_syntax, | |
| 2624 list2 | |
| 771 | 2625 (build_msg_string ("invalid string property list"), |
| 428 | 2626 XCDR (plist)))); |
| 2627 Fset_text_properties (beg, end, plist, tmp); | |
| 2628 } | |
| 2629 UNGCPRO; | |
| 2630 return tmp; | |
| 2631 } | |
| 2632 #endif /* 0 */ | |
| 2633 case '@': | |
| 2634 { | |
| 2635 /* #@NUMBER is used to skip NUMBER following characters. | |
| 2636 That's used in .elc files to skip over doc strings | |
| 2637 and function definitions. */ | |
| 2638 int i, nskip = 0; | |
| 2639 | |
| 2640 /* Read a decimal integer. */ | |
| 2641 while ((c = readchar (readcharfun)) >= 0 | |
| 2642 && c >= '0' && c <= '9') | |
| 2643 nskip = (10 * nskip) + (c - '0'); | |
| 2644 if (c >= 0) | |
| 2645 unreadchar (readcharfun, c); | |
| 2646 | |
| 2647 /* FSF has code here that maybe caches the skipped | |
| 2648 string. See above for why this is totally | |
| 2649 losing. We handle this differently. */ | |
| 2650 | |
| 2651 /* Skip that many characters. */ | |
| 2652 for (i = 0; i < nskip && c >= 0; i++) | |
| 2653 c = readchar (readcharfun); | |
| 2654 | |
| 2655 goto retry; | |
| 2656 } | |
|
5677
febc025c4e0c
Adopt GNU's ## syntax for the interned symbol with name "".
Aidan Kehoe <kehoea@parhasard.net>
parents:
5610
diff
changeset
|
2657 /* The interned symbol with the empty name. */ |
|
febc025c4e0c
Adopt GNU's ## syntax for the interned symbol with name "".
Aidan Kehoe <kehoea@parhasard.net>
parents:
5610
diff
changeset
|
2658 case '#': return intern (""); |
| 428 | 2659 case '$': return Vload_file_name_internal; |
| 2660 /* bit vectors */ | |
| 2661 case '*': return read_bit_vector (readcharfun); | |
| 2662 /* #o10 => 8 -- octal constant syntax */ | |
|
5213
7abb91db1e64
Accept #B<binary>, #O<octal>, and #X<hex>.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
2663 case 'o': case 'O': return read_integer (readcharfun, 8); |
| 428 | 2664 /* #xdead => 57005 -- hex constant syntax */ |
|
5213
7abb91db1e64
Accept #B<binary>, #O<octal>, and #X<hex>.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
2665 case 'x': case 'X': return read_integer (readcharfun, 16); |
| 428 | 2666 /* #b010 => 2 -- binary constant syntax */ |
|
5213
7abb91db1e64
Accept #B<binary>, #O<octal>, and #X<hex>.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
2667 case 'b': case 'B': return read_integer (readcharfun, 2); |
| 3543 | 2668 /* #r"raw\stringt" -- raw string syntax */ |
| 2669 case 'r': return read_raw_string(readcharfun); | |
| 428 | 2670 /* #s(foobar key1 val1 key2 val2) -- structure syntax */ |
| 2671 case 's': return read_structure (readcharfun); | |
| 2672 case '<': | |
| 2673 { | |
| 2674 unreadchar (readcharfun, c); | |
| 2675 return Fsignal (Qinvalid_read_syntax, | |
| 771 | 2676 list1 (build_msg_string ("Cannot read unreadable object"))); |
| 428 | 2677 } |
| 2678 #ifdef FEATUREP_SYNTAX | |
| 2679 case '+': | |
| 2680 case '-': | |
| 2681 { | |
| 456 | 2682 Lisp_Object feature_exp, obj, tem; |
| 428 | 2683 struct gcpro gcpro1, gcpro2; |
| 2684 | |
| 456 | 2685 feature_exp = read0(readcharfun); |
| 428 | 2686 obj = read0(readcharfun); |
| 2687 | |
| 2688 /* the call to `featurep' may GC. */ | |
| 456 | 2689 GCPRO2 (feature_exp, obj); |
| 2690 tem = call1 (Qfeaturep, feature_exp); | |
| 428 | 2691 UNGCPRO; |
| 2692 | |
| 2693 if (c == '+' && NILP(tem)) goto retry; | |
| 2694 if (c == '-' && !NILP(tem)) goto retry; | |
| 2695 return obj; | |
| 2696 } | |
| 2697 #endif | |
| 2698 case '0': case '1': case '2': case '3': case '4': | |
| 2699 case '5': case '6': case '7': case '8': case '9': | |
| 2700 /* Reader forms that can reuse previously read objects. */ | |
| 2701 { | |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2702 Lisp_Object parsed, found; |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2703 |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2704 Lstream_rewind (XLSTREAM (Vread_buffer_stream)); |
| 428 | 2705 |
| 2706 /* Using read_integer() here is impossible, because it | |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2707 chokes on `='. */ |
| 428 | 2708 while (c >= '0' && c <= '9') |
| 2709 { | |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2710 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), c); |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2711 QUIT; |
| 428 | 2712 c = readchar (readcharfun); |
| 2713 } | |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2714 |
|
5606
7c383c5784ed
Zero-terminate when passing strings to parse_integer(), lread.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
5605
diff
changeset
|
2715 /* blasted terminating 0 */ |
|
7c383c5784ed
Zero-terminate when passing strings to parse_integer(), lread.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
5605
diff
changeset
|
2716 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), 0); |
|
5610
d69ea1ff4ce3
Add the zero, *then* flush, when reading integers for the #N=... syntax.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5606
diff
changeset
|
2717 Lstream_flush (XLSTREAM (Vread_buffer_stream)); |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2718 |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2719 parsed |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2720 = parse_integer (resizing_buffer_stream_ptr |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2721 (XLSTREAM (Vread_buffer_stream)), |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2722 Lstream_byte_count (XLSTREAM |
|
5606
7c383c5784ed
Zero-terminate when passing strings to parse_integer(), lread.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
5605
diff
changeset
|
2723 (Vread_buffer_stream)) |
|
7c383c5784ed
Zero-terminate when passing strings to parse_integer(), lread.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
5605
diff
changeset
|
2724 - 1, 10); |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2725 |
|
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2726 found = assoc_no_quit (parsed, Vread_objects); |
| 428 | 2727 if (c == '=') |
| 2728 { | |
| 2729 /* #n=object returns object, but associates it with | |
| 2730 n for #n#. */ | |
| 2731 if (CONSP (found)) | |
|
5560
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2732 { |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2733 return Fsignal (Qinvalid_read_syntax, |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2734 list2 (build_msg_string |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2735 ("Multiply defined object label"), |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2736 parsed)); |
|
5560
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2737 } |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2738 else |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2739 { |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2740 Lisp_Object object; |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2741 |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2742 found = Fcons (parsed, Qnil); |
|
5560
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2743 /* Make FOUND a placeholder for the object that will |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2744 be read. (We've just consed it, and it's not |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2745 visible from Lisp, so there's no possibility of |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2746 confusing it with something else in the read |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2747 structure.) */ |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2748 XSETCDR (found, found); |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2749 Vread_objects = Fcons (found, Vread_objects); |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2750 object = read0 (readcharfun); |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2751 XSETCDR (found, object); |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2752 |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2753 nsubst_structures (object, found, object, check_eq_nokey, |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2754 1, Qeq, Qnil); |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2755 return object; |
|
58b38d5b32d0
Implement print-circle, allowing recursive and circular structures to be read.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5489
diff
changeset
|
2756 } |
| 428 | 2757 } |
| 2758 else if (c == '#') | |
| 2759 { | |
| 2760 /* #n# returns a previously read object. */ | |
| 2761 if (CONSP (found)) | |
| 2762 return XCDR (found); | |
| 2763 else | |
| 2764 return Fsignal (Qinvalid_read_syntax, | |
| 771 | 2765 list2 (build_msg_string |
| 428 | 2766 ("Undefined symbol label"), |
|
5605
cc7f8a0e569a
Accept bignums unambiguously in the syntax for object labels, lread.c.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5581
diff
changeset
|
2767 parsed)); |
| 428 | 2768 } |
| 2769 return Fsignal (Qinvalid_read_syntax, | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2770 list1 (build_ascstring ("#"))); |
| 428 | 2771 } |
| 2772 default: | |
| 2773 { | |
| 2774 unreadchar (readcharfun, c); | |
| 2775 return Fsignal (Qinvalid_read_syntax, | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
2776 list1 (build_ascstring ("#"))); |
| 428 | 2777 } |
| 2778 } | |
| 2779 } | |
| 2780 | |
| 2781 /* Quote */ | |
| 2782 case '\'': return list2 (Qquote, read0 (readcharfun)); | |
| 2783 | |
| 2784 #ifdef LISP_BACKQUOTES | |
| 2785 case '`': | |
| 2786 { | |
| 2787 Lisp_Object tem; | |
| 853 | 2788 int speccount = internal_bind_int (&new_backquote_flag, |
| 2789 1 + new_backquote_flag); | |
| 428 | 2790 tem = read0 (readcharfun); |
| 771 | 2791 unbind_to (speccount); |
| 428 | 2792 return list2 (Qbackquote, tem); |
| 2793 } | |
| 2794 | |
| 2795 case ',': | |
| 2796 { | |
| 2797 if (new_backquote_flag) | |
| 2798 { | |
| 2799 Lisp_Object comma_type = Qnil; | |
| 2800 int ch = readchar (readcharfun); | |
| 2801 | |
| 2802 if (ch == '@') | |
| 2803 comma_type = Qcomma_at; | |
| 2804 else if (ch == '.') | |
| 2805 comma_type = Qcomma_dot; | |
| 2806 else | |
| 2807 { | |
| 2808 if (ch >= 0) | |
| 2809 unreadchar (readcharfun, ch); | |
| 2810 comma_type = Qcomma; | |
| 2811 } | |
| 2812 return list2 (comma_type, read0 (readcharfun)); | |
| 2813 } | |
| 2814 else | |
| 2815 { | |
| 2816 /* YUCK. 99.999% backwards compatibility. The Right | |
| 2817 Thing(tm) is to signal an error here, because it's | |
| 2818 really invalid read syntax. Instead, this permits | |
| 2819 commas to begin symbols (unless they're inside | |
| 2820 backquotes). If an error is signalled here in the | |
| 2821 future, then commas should be invalid read syntax | |
| 2822 outside of backquotes anywhere they're found (i.e. | |
| 2823 they must be quoted in symbols) -- Stig */ | |
| 2824 return read_atom (readcharfun, c, 0); | |
| 2825 } | |
| 2826 } | |
| 2827 #endif | |
| 2828 | |
| 2829 case '?': | |
| 2830 { | |
| 2831 /* Evil GNU Emacs "character" (ie integer) syntax */ | |
| 2832 c = readchar (readcharfun); | |
| 2833 if (c < 0) | |
| 2834 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun))); | |
| 2835 | |
| 2836 if (c == '\\') | |
| 2837 c = read_escape (readcharfun); | |
| 4439 | 2838 if (c < 0) |
| 2839 return Fsignal (Qinvalid_read_syntax, list1 (READCHARFUN_MAYBE (readcharfun))); | |
| 428 | 2840 return make_char (c); |
| 2841 } | |
| 2842 | |
| 2843 case '\"': | |
| 3543 | 2844 /* String */ |
| 2845 return read_string(readcharfun, '\"', 0, 1); | |
| 428 | 2846 |
| 2847 default: | |
| 2848 { | |
| 2849 /* Ignore whitespace and control characters */ | |
| 2850 if (c <= 040) | |
| 2851 goto retry; | |
| 2852 return read_atom (readcharfun, c, 0); | |
| 2853 } | |
| 2854 } | |
| 2855 } | |
| 2856 | |
| 2857 | |
| 2858 | |
| 2859 #define LEAD_INT 1 | |
| 2860 #define DOT_CHAR 2 | |
| 2861 #define TRAIL_INT 4 | |
| 2862 #define E_CHAR 8 | |
| 2863 #define EXP_INT 16 | |
| 2864 | |
| 2865 int | |
| 442 | 2866 isfloat_string (const char *cp) |
| 428 | 2867 { |
| 2868 int state = 0; | |
| 867 | 2869 const Ibyte *ucp = (const Ibyte *) cp; |
| 428 | 2870 |
| 2871 if (*ucp == '+' || *ucp == '-') | |
| 2872 ucp++; | |
| 2873 | |
| 2874 if (*ucp >= '0' && *ucp <= '9') | |
| 2875 { | |
| 2876 state |= LEAD_INT; | |
| 2877 while (*ucp >= '0' && *ucp <= '9') | |
| 2878 ucp++; | |
| 2879 } | |
| 2880 if (*ucp == '.') | |
| 2881 { | |
| 2882 state |= DOT_CHAR; | |
| 2883 ucp++; | |
| 2884 } | |
| 2885 if (*ucp >= '0' && *ucp <= '9') | |
| 2886 { | |
| 2887 state |= TRAIL_INT; | |
| 2888 while (*ucp >= '0' && *ucp <= '9') | |
| 2889 ucp++; | |
| 2890 } | |
| 2891 if (*ucp == 'e' || *ucp == 'E') | |
| 2892 { | |
| 2893 state |= E_CHAR; | |
| 2894 ucp++; | |
| 2895 if ((*ucp == '+') || (*ucp == '-')) | |
| 2896 ucp++; | |
| 2897 } | |
| 2898 | |
| 2899 if (*ucp >= '0' && *ucp <= '9') | |
| 2900 { | |
| 2901 state |= EXP_INT; | |
| 2902 while (*ucp >= '0' && *ucp <= '9') | |
| 2903 ucp++; | |
| 2904 } | |
| 2905 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n') | |
| 2906 || (*ucp == '\r') || (*ucp == '\f')) | |
| 2907 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) | |
| 2908 || state == (DOT_CHAR|TRAIL_INT) | |
| 2909 || state == (LEAD_INT|E_CHAR|EXP_INT) | |
| 2910 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) | |
| 2911 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
| 2912 } | |
| 1983 | 2913 |
| 2914 int | |
| 2915 isratio_string (const char *cp) | |
| 2916 { | |
| 2010 | 2917 /* Possible minus/plus sign */ |
| 2918 if (*cp == '-' || *cp == '+') | |
| 1983 | 2919 cp++; |
| 2920 | |
| 2921 /* Numerator */ | |
| 2922 if (*cp < '0' || *cp > '9') | |
| 2923 return 0; | |
| 2924 | |
| 2925 do { | |
| 2926 cp++; | |
| 2927 } while (*cp >= '0' && *cp <= '9'); | |
| 2928 | |
| 2929 /* Slash */ | |
| 2930 if (*cp++ != '/') | |
| 2931 return 0; | |
| 2932 | |
| 2933 /* Denominator */ | |
| 2934 if (*cp < '0' || *cp > '9') | |
| 2935 return 0; | |
| 2936 | |
| 2937 do { | |
| 2938 cp++; | |
| 2939 } while (*cp >= '0' && *cp <= '9'); | |
| 2940 | |
| 2941 return *cp == '\0' || *cp == ' ' || *cp =='\t' || *cp == '\n' || | |
| 2942 *cp == '\r' || *cp == '\f'; | |
| 2943 } | |
|
5243
808131ba4a57
Print symbols with ratio-like names and the associated ratios distinctly.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5228
diff
changeset
|
2944 |
| 428 | 2945 |
| 2946 static void * | |
| 2947 sequence_reader (Lisp_Object readcharfun, | |
| 867 | 2948 Ichar terminator, |
| 428 | 2949 void *state, |
| 2950 void * (*conser) (Lisp_Object readcharfun, | |
| 2951 void *state, Charcount len)) | |
| 2952 { | |
| 2953 Charcount len; | |
| 2954 | |
| 2955 for (len = 0; ; len++) | |
| 2956 { | |
| 867 | 2957 Ichar ch; |
| 428 | 2958 |
| 2959 QUIT; | |
| 2960 ch = reader_nextchar (readcharfun); | |
| 2961 | |
| 2962 if (ch == terminator) | |
| 2963 return state; | |
| 2964 else | |
| 2965 unreadchar (readcharfun, ch); | |
| 2966 #ifdef FEATUREP_SYNTAX | |
| 2967 if (ch == ']') | |
| 442 | 2968 read_syntax_error ("\"]\" in a list"); |
| 428 | 2969 else if (ch == ')') |
| 442 | 2970 read_syntax_error ("\")\" in a vector"); |
| 428 | 2971 #endif |
| 2972 state = ((conser) (readcharfun, state, len)); | |
| 2973 } | |
| 2974 } | |
| 2975 | |
| 2976 | |
| 2977 struct read_list_state | |
| 2978 { | |
| 2979 Lisp_Object head; | |
| 2980 Lisp_Object tail; | |
| 2981 int length; | |
| 2982 int allow_dotted_lists; | |
| 867 | 2983 Ichar terminator; |
| 428 | 2984 }; |
| 2985 | |
| 2986 static void * | |
| 2286 | 2987 read_list_conser (Lisp_Object readcharfun, void *state, Charcount UNUSED (len)) |
| 428 | 2988 { |
| 2989 struct read_list_state *s = (struct read_list_state *) state; | |
| 2990 Lisp_Object elt; | |
| 2991 | |
| 2992 elt = read1 (readcharfun); | |
| 2993 | |
| 2994 if (CONSP (elt) && UNBOUNDP (XCAR (elt))) | |
| 2995 { | |
| 2996 Lisp_Object tem = elt; | |
| 867 | 2997 Ichar ch; |
| 428 | 2998 |
| 2999 elt = XCDR (elt); | |
| 853 | 3000 free_cons (tem); |
| 428 | 3001 tem = Qnil; |
| 3002 ch = XCHAR (elt); | |
| 3003 #ifdef FEATUREP_SYNTAX | |
| 3004 if (ch == s->terminator) /* deal with #+, #- reader macros */ | |
| 3005 { | |
| 3006 unreadchar (readcharfun, s->terminator); | |
| 3007 goto done; | |
| 3008 } | |
| 3009 else if (ch == ']') | |
| 442 | 3010 read_syntax_error ("']' in a list"); |
| 428 | 3011 else if (ch == ')') |
| 442 | 3012 read_syntax_error ("')' in a vector"); |
| 428 | 3013 else |
| 3014 #endif | |
| 3015 if (ch != '.') | |
| 563 | 3016 signal_error (Qinternal_error, "BUG! Internal reader error", elt); |
| 428 | 3017 else if (!s->allow_dotted_lists) |
| 442 | 3018 read_syntax_error ("\".\" in a vector"); |
| 428 | 3019 else |
| 3020 { | |
| 3021 if (!NILP (s->tail)) | |
| 3022 XCDR (s->tail) = read0 (readcharfun); | |
| 3023 else | |
| 3024 s->head = read0 (readcharfun); | |
| 3025 elt = read1 (readcharfun); | |
| 3026 if (CONSP (elt) && UNBOUNDP (XCAR (elt))) | |
| 3027 { | |
| 3028 ch = XCHAR (XCDR (elt)); | |
| 853 | 3029 free_cons (elt); |
| 428 | 3030 if (ch == s->terminator) |
| 3031 { | |
| 3032 unreadchar (readcharfun, s->terminator); | |
| 3033 goto done; | |
| 3034 } | |
| 3035 } | |
| 442 | 3036 read_syntax_error (". in wrong context"); |
| 428 | 3037 } |
| 3038 } | |
| 3039 | |
| 3040 elt = Fcons (elt, Qnil); | |
| 3041 if (!NILP (s->tail)) | |
| 3042 XCDR (s->tail) = elt; | |
| 3043 else | |
| 3044 s->head = elt; | |
| 3045 s->tail = elt; | |
| 3046 done: | |
| 3047 s->length++; | |
| 3048 return s; | |
| 3049 } | |
| 3050 | |
| 3051 | |
| 814 | 3052 /* allow_dotted_lists means that something like (foo bar . baz) |
| 3053 is acceptable. If -1, means check for starting with defun | |
| 3054 and make structure pure. (not implemented, probably for very | |
| 3055 good reasons) | |
| 3056 | |
| 3057 If check_for_doc_references, look for (#$ . INT) doc references | |
| 3058 in the list and record if load_force_doc_strings is non-zero. | |
| 3059 (Such doc references will be destroyed during the loadup phase | |
| 3060 by replacing with Qzero, because Snarf-documentation will fill | |
| 3061 them in again.) | |
| 3062 | |
| 3063 WARNING: If you set this, you sure as hell better not call | |
| 3064 free_list() on the returned list here. | |
| 3065 */ | |
| 428 | 3066 |
| 3067 static Lisp_Object | |
| 3068 read_list (Lisp_Object readcharfun, | |
| 867 | 3069 Ichar terminator, |
| 428 | 3070 int allow_dotted_lists, |
| 3071 int check_for_doc_references) | |
| 3072 { | |
| 3073 struct read_list_state s; | |
| 3074 struct gcpro gcpro1, gcpro2; | |
| 3075 | |
| 3076 s.head = Qnil; | |
| 3077 s.tail = Qnil; | |
| 3078 s.length = 0; | |
| 3079 s.allow_dotted_lists = allow_dotted_lists; | |
| 3080 s.terminator = terminator; | |
| 3081 GCPRO2 (s.head, s.tail); | |
| 3082 | |
| 3083 sequence_reader (readcharfun, terminator, &s, read_list_conser); | |
| 3084 | |
| 3085 if ((purify_flag || load_force_doc_strings) && check_for_doc_references) | |
| 3086 { | |
| 3087 /* check now for any doc string references and record them | |
| 3088 for later. */ | |
| 3089 Lisp_Object tail; | |
| 3090 | |
| 3091 /* We might be dealing with an imperfect list so don't | |
| 3092 use LIST_LOOP */ | |
| 3093 for (tail = s.head; CONSP (tail); tail = XCDR (tail)) | |
| 3094 { | |
| 3095 Lisp_Object holding_cons = Qnil; | |
| 3096 | |
| 3097 { | |
| 3098 Lisp_Object elem = XCAR (tail); | |
| 3099 /* elem might be (#$ . INT) ... */ | |
| 3100 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal)) | |
| 3101 holding_cons = tail; | |
| 3102 /* or it might be (quote (#$ . INT)) i.e. | |
| 3103 (quote . ((#$ . INT) . nil)) in the case of | |
| 3104 `autoload' (autoload evaluates its arguments, while | |
| 3105 `defvar', `defun', etc. don't). */ | |
| 3106 if (CONSP (elem) && EQ (XCAR (elem), Qquote) | |
| 3107 && CONSP (XCDR (elem))) | |
| 3108 { | |
| 3109 elem = XCAR (XCDR (elem)); | |
| 3110 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal)) | |
| 3111 holding_cons = XCDR (XCAR (tail)); | |
| 3112 } | |
| 3113 } | |
| 3114 | |
| 3115 if (CONSP (holding_cons)) | |
| 3116 { | |
| 3117 if (purify_flag) | |
| 3118 { | |
| 3119 if (NILP (Vinternal_doc_file_name)) | |
| 3120 /* We have not yet called Snarf-documentation, so | |
| 3121 assume this file is described in the DOC file | |
| 3122 and Snarf-documentation will fill in the right | |
| 3123 value later. For now, replace the whole list | |
| 3124 with 0. */ | |
| 3125 XCAR (holding_cons) = Qzero; | |
| 3126 else | |
| 3127 /* We have already called Snarf-documentation, so | |
| 3128 make a relative file name for this file, so it | |
| 3129 can be found properly in the installed Lisp | |
| 3130 directory. We don't use Fexpand_file_name | |
| 3131 because that would make the directory absolute | |
| 3132 now. */ | |
| 3133 XCAR (XCAR (holding_cons)) = | |
|
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4844
diff
changeset
|
3134 concat2 (build_ascstring ("../lisp/"), |
| 428 | 3135 Ffile_name_nondirectory |
| 3136 (Vload_file_name_internal)); | |
| 3137 } | |
| 3138 else | |
| 3139 /* Not pure. Just add to Vload_force_doc_string_list, | |
| 3140 and the string will be filled in properly in | |
| 3141 load_force_doc_string_unwind(). */ | |
| 3142 Vload_force_doc_string_list = | |
| 3143 /* We pass the cons that holds the (#$ . INT) so we | |
| 3144 can modify it in-place. */ | |
| 3145 Fcons (holding_cons, Vload_force_doc_string_list); | |
| 3146 } | |
| 3147 } | |
| 3148 } | |
| 3149 | |
| 3150 UNGCPRO; | |
| 3151 return s.head; | |
| 3152 } | |
| 3153 | |
| 3154 static Lisp_Object | |
| 3155 read_vector (Lisp_Object readcharfun, | |
| 867 | 3156 Ichar terminator) |
| 428 | 3157 { |
| 3158 Lisp_Object tem; | |
| 3159 Lisp_Object *p; | |
| 3160 int len; | |
| 3161 int i; | |
| 3162 struct read_list_state s; | |
| 3163 struct gcpro gcpro1, gcpro2; | |
| 3164 | |
| 3165 s.head = Qnil; | |
| 3166 s.tail = Qnil; | |
| 3167 s.length = 0; | |
| 3168 s.allow_dotted_lists = 0; | |
| 3169 GCPRO2 (s.head, s.tail); | |
| 3170 | |
| 3171 sequence_reader (readcharfun, terminator, &s, read_list_conser); | |
| 3172 | |
| 3173 UNGCPRO; | |
| 3174 tem = s.head; | |
|
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|
3175 len = XFIXNUM (Flength (tem)); |
| 428 | 3176 |
| 814 | 3177 s.head = make_vector (len, Qnil); |
| 428 | 3178 |
| 3179 for (i = 0, p = &(XVECTOR_DATA (s.head)[0]); | |
| 3180 i < len; | |
| 3181 i++, p++) | |
| 3182 { | |
| 853 | 3183 Lisp_Object otem = tem; |
| 428 | 3184 tem = Fcar (tem); |
| 3185 *p = tem; | |
| 853 | 3186 tem = XCDR (otem); |
| 428 | 3187 free_cons (otem); |
| 3188 } | |
| 3189 return s.head; | |
| 3190 } | |
| 3191 | |
| 3192 static Lisp_Object | |
| 867 | 3193 read_compiled_function (Lisp_Object readcharfun, Ichar terminator) |
| 428 | 3194 { |
| 3195 /* Accept compiled functions at read-time so that we don't | |
| 3196 have to build them at load-time. */ | |
| 3197 Lisp_Object stuff; | |
| 3198 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1]; | |
| 3199 struct gcpro gcpro1; | |
| 3200 int len; | |
| 3201 int iii; | |
| 3202 int saw_a_doc_ref = 0; | |
| 3203 | |
| 3204 /* Note: we tell read_list not to search for doc references | |
| 3205 because we need to handle the "doc reference" for the | |
| 3206 instructions and constants differently. */ | |
| 3207 stuff = read_list (readcharfun, terminator, 0, 0); | |
|
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parents:
5560
diff
changeset
|
3208 len = XFIXNUM (Flength (stuff)); |
| 428 | 3209 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1) |
| 3210 return | |
| 442 | 3211 continuable_read_syntax_error ("#[...] used with wrong number of elements"); |
| 428 | 3212 |
| 3213 for (iii = 0; CONSP (stuff); iii++) | |
| 3214 { | |
| 853 | 3215 Lisp_Object victim = stuff; |
| 428 | 3216 make_byte_code_args[iii] = Fcar (stuff); |
| 3217 if ((purify_flag || load_force_doc_strings) | |
| 3218 && CONSP (make_byte_code_args[iii]) | |
| 3219 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal)) | |
| 3220 { | |
| 3221 if (purify_flag && iii == COMPILED_DOC_STRING) | |
| 3222 { | |
| 3223 /* same as in read_list(). */ | |
| 3224 if (NILP (Vinternal_doc_file_name)) | |
| 3225 make_byte_code_args[iii] = Qzero; | |
| 3226 else | |
| 3227 XCAR (make_byte_code_args[iii]) = | |
|
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4844
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|
3228 concat2 (build_ascstring ("../lisp/"), |
| 428 | 3229 Ffile_name_nondirectory |
| 3230 (Vload_file_name_internal)); | |
| 3231 } | |
| 3232 else | |
| 3233 saw_a_doc_ref = 1; | |
| 3234 } | |
| 3235 stuff = Fcdr (stuff); | |
| 3236 free_cons (victim); | |
| 3237 } | |
| 3238 GCPRO1 (make_byte_code_args[0]); | |
| 3239 gcpro1.nvars = len; | |
| 3240 | |
| 3241 /* v18 or v19 bytecode file. Need to Ebolify. */ | |
| 3242 if (load_byte_code_version < 20 && VECTORP (make_byte_code_args[2])) | |
| 3243 ebolify_bytecode_constants (make_byte_code_args[2]); | |
| 3244 | |
| 3245 /* make-byte-code looks at purify_flag, which should have the same | |
| 3246 * value as our "read-pure" argument */ | |
| 3247 stuff = Fmake_byte_code (len, make_byte_code_args); | |
| 3248 XCOMPILED_FUNCTION (stuff)->flags.ebolified = (load_byte_code_version < 20); | |
| 3249 if (saw_a_doc_ref) | |
| 3250 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list); | |
| 3251 UNGCPRO; | |
| 3252 return stuff; | |
| 3253 } | |
| 3254 | |
| 3255 | |
| 3256 | |
| 3257 void | |
| 3258 init_lread (void) | |
| 3259 { | |
| 3260 Vvalues = Qnil; | |
| 3261 | |
| 3262 load_in_progress = 0; | |
| 3263 | |
| 3264 Vload_descriptor_list = Qnil; | |
| 3265 | |
| 3266 /* kludge: locate-file does not work for a null load-path, even if | |
| 3267 the file name is absolute. */ | |
| 3268 | |
|
4952
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Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
3269 Vload_path = Fcons (build_ascstring (""), Qnil); |
| 428 | 3270 |
| 3271 /* This used to get initialized in init_lread because all streams | |
| 3272 got closed when dumping occurs. This is no longer true -- | |
| 3273 Vread_buffer_stream is a resizing output stream, and there is no | |
| 3274 reason to close it at dump-time. | |
| 3275 | |
| 3276 Vread_buffer_stream is set to Qnil in vars_of_lread, and this | |
| 3277 will initialize it only once, at dump-time. */ | |
| 3278 if (NILP (Vread_buffer_stream)) | |
| 3279 Vread_buffer_stream = make_resizing_buffer_output_stream (); | |
| 3280 | |
| 3281 Vload_force_doc_string_list = Qnil; | |
|
4608
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Aidan Kehoe <kehoea@parhasard.net>
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4483
diff
changeset
|
3282 |
|
1e3cf11fa27d
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4483
diff
changeset
|
3283 Vload_file_name_internal = Qnil; |
|
1e3cf11fa27d
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4483
diff
changeset
|
3284 Vload_file_name = Qnil; |
| 428 | 3285 } |
| 3286 | |
| 3287 void | |
| 3288 syms_of_lread (void) | |
| 3289 { | |
| 3290 DEFSUBR (Fread); | |
| 3291 DEFSUBR (Fread_from_string); | |
| 3292 DEFSUBR (Fload_internal); | |
| 3293 DEFSUBR (Flocate_file); | |
| 3294 DEFSUBR (Flocate_file_clear_hashing); | |
| 3295 DEFSUBR (Feval_buffer); | |
| 3296 DEFSUBR (Feval_region); | |
| 3297 | |
| 563 | 3298 DEFSYMBOL (Qstandard_input); |
| 3299 DEFSYMBOL (Qread_char); | |
| 3300 DEFSYMBOL (Qload); | |
| 1292 | 3301 DEFSYMBOL (Qload_internal); |
| 563 | 3302 DEFSYMBOL (Qfset); |
| 428 | 3303 |
| 3304 #ifdef LISP_BACKQUOTES | |
| 563 | 3305 DEFSYMBOL (Qbackquote); |
| 428 | 3306 defsymbol (&Qbacktick, "`"); |
| 3307 defsymbol (&Qcomma, ","); | |
| 3308 defsymbol (&Qcomma_at, ",@"); | |
| 3309 defsymbol (&Qcomma_dot, ",."); | |
| 3310 #endif | |
| 3311 | |
| 563 | 3312 DEFSYMBOL (Qexists); |
| 3313 DEFSYMBOL (Qreadable); | |
| 3314 DEFSYMBOL (Qwritable); | |
| 3315 DEFSYMBOL (Qexecutable); | |
| 428 | 3316 } |
| 3317 | |
| 3318 void | |
| 3319 structure_type_create (void) | |
| 3320 { | |
| 3321 the_structure_type_dynarr = Dynarr_new (structure_type); | |
| 3322 } | |
| 3323 | |
| 3324 void | |
| 3325 reinit_vars_of_lread (void) | |
| 3326 { | |
| 3327 Vread_buffer_stream = Qnil; | |
| 3328 staticpro_nodump (&Vread_buffer_stream); | |
| 3329 } | |
| 3330 | |
| 3331 void | |
| 3332 vars_of_lread (void) | |
| 3333 { | |
| 3334 DEFVAR_LISP ("values", &Vvalues /* | |
| 3335 List of values of all expressions which were read, evaluated and printed. | |
| 3336 Order is reverse chronological. | |
| 3337 */ ); | |
| 3338 | |
| 3339 DEFVAR_LISP ("standard-input", &Vstandard_input /* | |
| 3340 Stream for read to get input from. | |
| 3341 See documentation of `read' for possible values. | |
| 3342 */ ); | |
| 3343 Vstandard_input = Qt; | |
| 3344 | |
| 3345 DEFVAR_LISP ("load-path", &Vload_path /* | |
| 3346 *List of directories to search for files to load. | |
| 3347 Each element is a string (directory name) or nil (try default directory). | |
| 3348 | |
| 3349 Note that the elements of this list *may not* begin with "~", so you must | |
| 3350 call `expand-file-name' on them before adding them to this list. | |
| 3351 | |
| 3352 Initialized based on EMACSLOADPATH environment variable, if any, | |
| 3353 otherwise to default specified in by file `paths.h' when XEmacs was built. | |
| 3354 If there were no paths specified in `paths.h', then XEmacs chooses a default | |
| 3355 value for this variable by looking around in the file-system near the | |
| 3356 directory in which the XEmacs executable resides. | |
| 3357 */ ); | |
| 3358 Vload_path = Qnil; | |
| 3359 | |
| 3360 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path, | |
| 3361 "*Location of lisp files to be used when dumping ONLY."); */ | |
| 3362 | |
| 3363 DEFVAR_BOOL ("load-in-progress", &load_in_progress /* | |
| 3364 Non-nil iff inside of `load'. | |
| 3365 */ ); | |
| 3366 | |
| 2548 | 3367 DEFVAR_LISP ("load-suppress-alist", &Vload_suppress_alist /* |
| 3368 An alist of expressions controlling whether particular files can be loaded. | |
| 3369 Each element looks like (FILENAME EXPR). | |
| 3370 FILENAME should be a full pathname, but without the .el suffix. | |
| 3371 When `load' is run and is about to load the specified file, it evaluates | |
| 3372 the form to determine if the file can be loaded. | |
| 3373 This variable is normally initialized automatically. | |
| 3374 */ ); | |
| 3375 Vload_suppress_alist = Qnil; | |
| 3376 | |
| 428 | 3377 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /* |
| 3378 An alist of expressions to be evalled when particular files are loaded. | |
| 3379 Each element looks like (FILENAME FORMS...). | |
| 3380 When `load' is run and the file-name argument is FILENAME, | |
| 3381 the FORMS in the corresponding element are executed at the end of loading. | |
| 3382 | |
| 3383 FILENAME must match exactly! Normally FILENAME is the name of a library, | |
| 3384 with no directory specified, since that is how `load' is normally called. | |
| 3385 An error in FORMS does not undo the load, | |
| 3386 but does prevent execution of the rest of the FORMS. | |
| 3387 */ ); | |
| 3388 Vafter_load_alist = Qnil; | |
| 3389 | |
| 3390 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /* | |
| 3391 *Whether `load' should check whether the source is newer than the binary. | |
| 3392 If this variable is true, then when a `.elc' file is being loaded and the | |
| 3393 corresponding `.el' is newer, a warning message will be printed. | |
| 3394 */ ); | |
| 1261 | 3395 load_warn_when_source_newer = 1; |
| 428 | 3396 |
| 3397 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /* | |
| 3398 *Whether `load' should warn when loading a `.el' file instead of an `.elc'. | |
| 3399 If this variable is true, then when `load' is called with a filename without | |
| 3400 an extension, and the `.elc' version doesn't exist but the `.el' version does, | |
| 3401 then a message will be printed. If an explicit extension is passed to `load', | |
| 3402 no warning will be printed. | |
| 3403 */ ); | |
| 3404 load_warn_when_source_only = 0; | |
| 3405 | |
| 3406 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /* | |
| 3407 *Whether `load' should ignore `.elc' files when a suffix is not given. | |
| 3408 This is normally used only to bootstrap the `.elc' files when building XEmacs. | |
| 3409 */ ); | |
| 3410 load_ignore_elc_files = 0; | |
| 3411 | |
| 1123 | 3412 DEFVAR_BOOL ("load-ignore-out-of-date-elc-files", |
| 3413 &load_ignore_out_of_date_elc_files /* | |
| 3414 *Whether `load' should ignore out-of-date `.elc' files when no suffix is given. | |
| 3415 This is normally used when compiling packages of elisp files that may have | |
| 3416 complex dependencies. Ignoring all elc files with `load-ignore-elc-files' | |
| 3417 would also be safe, but much slower. | |
| 3418 */ ); | |
|
4955
de64354ffcbf
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Ben Wing <ben@xemacs.org>
parents:
4953
diff
changeset
|
3419 load_ignore_out_of_date_elc_files = 1; |
| 1123 | 3420 |
| 3421 DEFVAR_BOOL ("load-always-display-messages", | |
| 3422 &load_always_display_messages /* | |
| 3423 *Whether `load' should always display loading messages. | |
| 3424 If this is true, every file loaded will be shown, regardless of the setting | |
| 3425 of the NOMESSAGE parameter, and even when files are loaded indirectly, e.g. | |
| 2857 | 3426 due to `require'. |
| 1123 | 3427 */ ); |
| 3428 load_always_display_messages = 0; | |
| 3429 | |
| 3430 DEFVAR_BOOL ("load-show-full-path-in-messages", | |
| 3431 &load_show_full_path_in_messages /* | |
| 3432 *Whether `load' should show the full path in all loading messages. | |
| 3433 */ ); | |
| 3434 load_show_full_path_in_messages = 0; | |
| 3435 | |
| 428 | 3436 #ifdef LOADHIST |
| 3437 DEFVAR_LISP ("load-history", &Vload_history /* | |
| 3438 Alist mapping source file names to symbols and features. | |
| 3439 Each alist element is a list that starts with a file name, | |
| 3440 except for one element (optional) that starts with nil and describes | |
| 3441 definitions evaluated from buffers not visiting files. | |
| 3442 The remaining elements of each list are symbols defined as functions | |
| 3443 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'. | |
| 3444 */ ); | |
| 3445 Vload_history = Qnil; | |
| 3446 | |
| 3447 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /* | |
| 3448 Used for internal purposes by `load'. | |
| 3449 */ ); | |
| 3450 Vcurrent_load_list = Qnil; | |
| 3451 #endif | |
| 3452 | |
| 3453 DEFVAR_LISP ("load-file-name", &Vload_file_name /* | |
| 3454 Full name of file being loaded by `load'. | |
| 3455 */ ); | |
| 3456 Vload_file_name = Qnil; | |
| 3457 | |
| 3458 DEFVAR_LISP ("load-read-function", &Vload_read_function /* | |
| 3459 Function used by `load' and `eval-region' for reading expressions. | |
| 3460 The default is nil, which means use the function `read'. | |
| 3461 */ ); | |
| 3462 Vload_read_function = Qnil; | |
| 3463 | |
| 3464 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /* | |
| 3465 Non-nil means `load' should force-load all dynamic doc strings. | |
| 3466 This is useful when the file being loaded is a temporary copy. | |
| 3467 */ ); | |
| 3468 load_force_doc_strings = 0; | |
| 3469 | |
| 3470 /* See read_escape(). */ | |
| 3471 #if 0 | |
| 3472 /* Used to be named `puke-on-fsf-keys' */ | |
| 3473 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes", | |
| 3474 &fail_on_bucky_bit_character_escapes /* | |
| 3475 Whether `read' should signal an error when it encounters unsupported | |
| 3476 character escape syntaxes or just read them incorrectly. | |
| 3477 */ ); | |
| 3478 fail_on_bucky_bit_character_escapes = 0; | |
| 3479 #endif | |
| 3480 | |
| 3481 /* This must be initialized in init_lread otherwise it may start out | |
| 3482 with values saved when the image is dumped. */ | |
| 3483 staticpro (&Vload_descriptor_list); | |
| 3484 | |
| 3485 /* Initialized in init_lread. */ | |
| 3486 staticpro (&Vload_force_doc_string_list); | |
| 3487 | |
| 3488 Vload_file_name_internal = Qnil; | |
| 3489 staticpro (&Vload_file_name_internal); | |
| 3490 | |
| 3491 /* So that early-early stuff will work */ | |
| 1292 | 3492 Ffset (Qload, Qload_internal); |
| 428 | 3493 |
| 3494 #ifdef FEATUREP_SYNTAX | |
| 563 | 3495 DEFSYMBOL (Qfeaturep); |
| 771 | 3496 Fprovide (intern ("xemacs")); |
| 428 | 3497 #endif /* FEATUREP_SYNTAX */ |
| 3498 | |
| 3499 #ifdef LISP_BACKQUOTES | |
| 3500 old_backquote_flag = new_backquote_flag = 0; | |
| 3501 #endif | |
| 3502 | |
| 3503 #ifdef I18N3 | |
| 3504 Vfile_domain = Qnil; | |
|
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5088
diff
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|
3505 staticpro (&Vfile_domain); |
| 428 | 3506 #endif |
| 3507 | |
| 3508 Vread_objects = Qnil; | |
| 3509 staticpro (&Vread_objects); | |
| 3510 | |
| 3511 Vlocate_file_hash_table = make_lisp_hash_table (200, | |
| 3512 HASH_TABLE_NON_WEAK, | |
|
5211
cdca98f2d36f
Move `default-file-system-ignore-case' to C; fix bug in directory hash tables
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
3513 #ifdef DEFAULT_FILE_SYSTEM_IGNORE_CASE |
|
cdca98f2d36f
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Aidan Kehoe <kehoea@parhasard.net>
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5191
diff
changeset
|
3514 Qequalp |
|
cdca98f2d36f
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
3515 #else |
|
cdca98f2d36f
Move `default-file-system-ignore-case' to C; fix bug in directory hash tables
Aidan Kehoe <kehoea@parhasard.net>
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5191
diff
changeset
|
3516 Qequal |
|
cdca98f2d36f
Move `default-file-system-ignore-case' to C; fix bug in directory hash tables
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
3517 #endif |
|
cdca98f2d36f
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Aidan Kehoe <kehoea@parhasard.net>
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5191
diff
changeset
|
3518 ); |
| 428 | 3519 staticpro (&Vlocate_file_hash_table); |
| 3520 #ifdef DEBUG_XEMACS | |
| 3521 symbol_value (XSYMBOL (intern ("Vlocate-file-hash-table"))) | |
| 3522 = Vlocate_file_hash_table; | |
| 3523 #endif | |
| 3524 } |