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d45cf215 | 1 | /* Lexical analyzer for C and Objective C. |
517cbe13 JL |
2 | Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997 |
3 | 1998, 1999, 2000 Free Software Foundation, Inc. | |
e8bbfc4e RK |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
940d9d63 RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
e8bbfc4e | 21 | |
e9a25f70 | 22 | #include "config.h" |
670ee920 | 23 | #include "system.h" |
e8bbfc4e | 24 | |
e8bbfc4e | 25 | #include "rtl.h" |
8f17b5c5 | 26 | #include "expr.h" |
e8bbfc4e RK |
27 | #include "tree.h" |
28 | #include "input.h" | |
d6f4ec51 | 29 | #include "output.h" |
e8bbfc4e RK |
30 | #include "c-lex.h" |
31 | #include "c-tree.h" | |
32 | #include "flags.h" | |
0e5921e8 | 33 | #include "timevar.h" |
8b97c5f8 | 34 | #include "cpplib.h" |
3d6f7931 | 35 | #include "c-pragma.h" |
5f6da302 | 36 | #include "toplev.h" |
ab87f8c8 | 37 | #include "intl.h" |
7bdb32b9 | 38 | #include "tm_p.h" |
0e5921e8 | 39 | #include "splay-tree.h" |
7f905405 | 40 | #include "debug.h" |
ab87f8c8 | 41 | |
ab87f8c8 JL |
42 | /* MULTIBYTE_CHARS support only works for native compilers. |
43 | ??? Ideally what we want is to model widechar support after | |
44 | the current floating point support. */ | |
45 | #ifdef CROSS_COMPILE | |
46 | #undef MULTIBYTE_CHARS | |
47 | #endif | |
e8bbfc4e RK |
48 | |
49 | #ifdef MULTIBYTE_CHARS | |
56f48ce9 | 50 | #include "mbchar.h" |
e8bbfc4e | 51 | #include <locale.h> |
56f48ce9 | 52 | #endif /* MULTIBYTE_CHARS */ |
c5c76735 JL |
53 | #ifndef GET_ENVIRONMENT |
54 | #define GET_ENVIRONMENT(ENV_VALUE,ENV_NAME) ((ENV_VALUE) = getenv (ENV_NAME)) | |
55 | #endif | |
e8bbfc4e | 56 | |
373e2177 NB |
57 | /* The input filename as understood by CPP, where "" represents stdin. */ |
58 | static const char *cpp_filename; | |
3aac38d7 | 59 | |
0e5921e8 ZW |
60 | /* We may keep statistics about how long which files took to compile. */ |
61 | static int header_time, body_time; | |
62 | static splay_tree file_info_tree; | |
3ab6dd7c | 63 | |
e8bbfc4e RK |
64 | /* Cause the `yydebug' variable to be defined. */ |
65 | #define YYDEBUG 1 | |
66 | ||
e8bbfc4e RK |
67 | /* File used for outputting assembler code. */ |
68 | extern FILE *asm_out_file; | |
69 | ||
12a39b12 JM |
70 | #undef WCHAR_TYPE_SIZE |
71 | #define WCHAR_TYPE_SIZE TYPE_PRECISION (wchar_type_node) | |
e8bbfc4e RK |
72 | |
73 | /* Number of bytes in a wide character. */ | |
74 | #define WCHAR_BYTES (WCHAR_TYPE_SIZE / BITS_PER_UNIT) | |
75 | ||
0e5921e8 ZW |
76 | int indent_level; /* Number of { minus number of }. */ |
77 | int pending_lang_change; /* If we need to switch languages - C++ only */ | |
78 | int c_header_level; /* depth in C headers - C++ only */ | |
fbb18613 JM |
79 | |
80 | /* Nonzero tells yylex to ignore \ in string constants. */ | |
81 | static int ignore_escape_flag; | |
e9a25f70 | 82 | |
0e5921e8 ZW |
83 | static void parse_float PARAMS ((PTR)); |
84 | static tree lex_number PARAMS ((const char *, unsigned int)); | |
85 | static tree lex_string PARAMS ((const char *, unsigned int, int)); | |
c8a96070 | 86 | static tree lex_charconst PARAMS ((const cpp_token *)); |
0e5921e8 ZW |
87 | static void update_header_times PARAMS ((const char *)); |
88 | static int dump_one_header PARAMS ((splay_tree_node, void *)); | |
23356f93 | 89 | static void cb_ident PARAMS ((cpp_reader *, const cpp_string *)); |
eb1f4d9d | 90 | static void cb_file_change PARAMS ((cpp_reader *, const cpp_file_change *)); |
8b97c5f8 | 91 | static void cb_def_pragma PARAMS ((cpp_reader *)); |
65289a3a NB |
92 | static void cb_define PARAMS ((cpp_reader *, cpp_hashnode *)); |
93 | static void cb_undef PARAMS ((cpp_reader *, cpp_hashnode *)); | |
e31c7eec | 94 | \f |
3b304f5b | 95 | const char * |
0e5921e8 | 96 | init_c_lex (filename) |
3b304f5b | 97 | const char *filename; |
e3d1fd32 | 98 | { |
b61c5ed0 | 99 | struct cpp_callbacks *cb; |
0e5921e8 ZW |
100 | struct c_fileinfo *toplevel; |
101 | ||
102 | /* Set up filename timing. Must happen before cpp_start_read. */ | |
103 | file_info_tree = splay_tree_new ((splay_tree_compare_fn)strcmp, | |
104 | 0, | |
105 | (splay_tree_delete_value_fn)free); | |
a8a05998 | 106 | toplevel = get_fileinfo ("<top level>"); |
0e5921e8 ZW |
107 | if (flag_detailed_statistics) |
108 | { | |
109 | header_time = 0; | |
110 | body_time = get_run_time (); | |
111 | toplevel->time = body_time; | |
112 | } | |
113 | ||
114 | #ifdef MULTIBYTE_CHARS | |
115 | /* Change to the native locale for multibyte conversions. */ | |
116 | setlocale (LC_CTYPE, ""); | |
117 | GET_ENVIRONMENT (literal_codeset, "LANG"); | |
118 | #endif | |
119 | ||
b61c5ed0 NB |
120 | cb = cpp_get_callbacks (parse_in); |
121 | ||
122 | cb->ident = cb_ident; | |
123 | cb->file_change = cb_file_change; | |
124 | cb->def_pragma = cb_def_pragma; | |
0e5921e8 | 125 | |
65289a3a NB |
126 | /* Set the debug callbacks if we can use them. */ |
127 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
128 | && (write_symbols == DWARF_DEBUG || write_symbols == DWARF2_DEBUG)) | |
129 | { | |
b61c5ed0 NB |
130 | cb->define = cb_define; |
131 | cb->undef = cb_undef; | |
65289a3a NB |
132 | } |
133 | ||
373e2177 | 134 | |
b12da25e | 135 | if (filename == 0 || !strcmp (filename, "-")) |
373e2177 NB |
136 | filename = "stdin", cpp_filename = ""; |
137 | else | |
138 | cpp_filename = filename; | |
5c60e5c0 | 139 | |
851ef036 NB |
140 | /* Start it at 0. */ |
141 | lineno = 0; | |
b12da25e | 142 | |
5c60e5c0 | 143 | return filename; |
e3d1fd32 PB |
144 | } |
145 | ||
3aac38d7 RH |
146 | /* A thin wrapper around the real parser that initializes the |
147 | integrated preprocessor after debug output has been initialized. */ | |
148 | ||
149 | int | |
150 | yyparse() | |
151 | { | |
373e2177 | 152 | if (! cpp_start_read (parse_in, cpp_filename)) |
3aac38d7 RH |
153 | return 1; /* cpplib has emitted an error. */ |
154 | ||
155 | return yyparse_1(); | |
156 | } | |
157 | ||
0e5921e8 ZW |
158 | struct c_fileinfo * |
159 | get_fileinfo (name) | |
160 | const char *name; | |
e3d1fd32 | 161 | { |
0e5921e8 ZW |
162 | splay_tree_node n; |
163 | struct c_fileinfo *fi; | |
164 | ||
165 | n = splay_tree_lookup (file_info_tree, (splay_tree_key) name); | |
166 | if (n) | |
167 | return (struct c_fileinfo *) n->value; | |
168 | ||
169 | fi = (struct c_fileinfo *) xmalloc (sizeof (struct c_fileinfo)); | |
170 | fi->time = 0; | |
171 | fi->interface_only = 0; | |
172 | fi->interface_unknown = 1; | |
173 | splay_tree_insert (file_info_tree, (splay_tree_key) name, | |
174 | (splay_tree_value) fi); | |
175 | return fi; | |
e56e519d | 176 | } |
e3d1fd32 | 177 | |
0e5921e8 ZW |
178 | static void |
179 | update_header_times (name) | |
180 | const char *name; | |
e8bbfc4e | 181 | { |
0e5921e8 ZW |
182 | /* Changing files again. This means currently collected time |
183 | is charged against header time, and body time starts back at 0. */ | |
184 | if (flag_detailed_statistics) | |
e8bbfc4e | 185 | { |
0e5921e8 ZW |
186 | int this_time = get_run_time (); |
187 | struct c_fileinfo *file = get_fileinfo (name); | |
188 | header_time += this_time - body_time; | |
189 | file->time += this_time - body_time; | |
190 | body_time = this_time; | |
e8bbfc4e RK |
191 | } |
192 | } | |
193 | ||
0e5921e8 ZW |
194 | static int |
195 | dump_one_header (n, dummy) | |
196 | splay_tree_node n; | |
197 | void *dummy ATTRIBUTE_UNUSED; | |
e8bbfc4e | 198 | { |
0e5921e8 ZW |
199 | print_time ((const char *) n->key, |
200 | ((struct c_fileinfo *) n->value)->time); | |
201 | return 0; | |
e8bbfc4e | 202 | } |
e8bbfc4e RK |
203 | |
204 | void | |
0e5921e8 | 205 | dump_time_statistics () |
e8bbfc4e | 206 | { |
0e5921e8 ZW |
207 | struct c_fileinfo *file = get_fileinfo (input_filename); |
208 | int this_time = get_run_time (); | |
209 | file->time += this_time - body_time; | |
210 | ||
211 | fprintf (stderr, "\n******\n"); | |
212 | print_time ("header files (total)", header_time); | |
213 | print_time ("main file (total)", this_time - body_time); | |
214 | fprintf (stderr, "ratio = %g : 1\n", | |
215 | (double)header_time / (double)(this_time - body_time)); | |
216 | fprintf (stderr, "\n******\n"); | |
217 | ||
218 | splay_tree_foreach (file_info_tree, dump_one_header, 0); | |
e8bbfc4e | 219 | } |
a6124a42 | 220 | |
27e2564a NB |
221 | /* Not yet handled: #pragma, #define, #undef. |
222 | No need to deal with linemarkers under normal conditions. */ | |
223 | ||
0e5921e8 | 224 | static void |
27e2564a NB |
225 | cb_ident (pfile, str) |
226 | cpp_reader *pfile ATTRIBUTE_UNUSED; | |
f5720527 | 227 | const cpp_string *str ATTRIBUTE_UNUSED; |
0e5921e8 | 228 | { |
0e5921e8 | 229 | #ifdef ASM_OUTPUT_IDENT |
27e2564a | 230 | if (! flag_no_ident) |
0e5921e8 | 231 | { |
27e2564a NB |
232 | /* Convert escapes in the string. */ |
233 | tree value = lex_string ((const char *)str->text, str->len, 0); | |
234 | ASM_OUTPUT_IDENT (asm_out_file, TREE_STRING_POINTER (value)); | |
0e5921e8 ZW |
235 | } |
236 | #endif | |
27e2564a NB |
237 | } |
238 | ||
239 | static void | |
eb1f4d9d | 240 | cb_file_change (pfile, fc) |
27e2564a NB |
241 | cpp_reader *pfile ATTRIBUTE_UNUSED; |
242 | const cpp_file_change *fc; | |
243 | { | |
27e2564a | 244 | if (fc->reason == FC_ENTER) |
fbb18613 | 245 | { |
5bea1ccf JM |
246 | /* Don't stack the main buffer on the input stack; |
247 | we already did in compile_file. */ | |
27e2564a | 248 | if (fc->from.filename) |
0e5921e8 | 249 | { |
851ef036 | 250 | lineno = fc->from.lineno; |
27e2564a NB |
251 | push_srcloc (fc->to.filename, 1); |
252 | input_file_stack->indent_level = indent_level; | |
7f905405 | 253 | (*debug_hooks->start_source_file) (fc->from.lineno, fc->to.filename); |
27e2564a NB |
254 | #ifndef NO_IMPLICIT_EXTERN_C |
255 | if (c_header_level) | |
256 | ++c_header_level; | |
257 | else if (fc->externc) | |
258 | { | |
259 | c_header_level = 1; | |
260 | ++pending_lang_change; | |
261 | } | |
0e5921e8 | 262 | #endif |
27e2564a | 263 | } |
ad2a084d NB |
264 | else |
265 | main_input_filename = fc->to.filename; | |
fbb18613 | 266 | } |
27e2564a | 267 | else if (fc->reason == FC_LEAVE) |
fbb18613 JM |
268 | { |
269 | /* Popping out of a file. */ | |
270 | if (input_file_stack->next) | |
0468bc75 | 271 | { |
0e5921e8 ZW |
272 | #ifndef NO_IMPLICIT_EXTERN_C |
273 | if (c_header_level && --c_header_level == 0) | |
274 | { | |
27e2564a | 275 | if (fc->externc) |
0e5921e8 ZW |
276 | warning ("badly nested C headers from preprocessor"); |
277 | --pending_lang_change; | |
278 | } | |
279 | #endif | |
280 | #if 0 | |
281 | if (indent_level != input_file_stack->indent_level) | |
fbb18613 JM |
282 | { |
283 | warning_with_file_and_line | |
5bea1ccf | 284 | (input_filename, lineno, |
0e5921e8 ZW |
285 | "This file contains more '%c's than '%c's.", |
286 | indent_level > input_file_stack->indent_level ? '{' : '}', | |
287 | indent_level > input_file_stack->indent_level ? '}' : '{'); | |
fbb18613 | 288 | } |
0e5921e8 ZW |
289 | #endif |
290 | pop_srcloc (); | |
7f905405 | 291 | (*debug_hooks->end_source_file) (input_file_stack->line); |
0468bc75 | 292 | } |
fbb18613 | 293 | else |
27e2564a | 294 | error ("leaving more files than we entered"); |
e8bbfc4e | 295 | } |
fbb18613 | 296 | |
27e2564a | 297 | update_header_times (fc->to.filename); |
665ad678 | 298 | in_system_header = fc->sysp != 0; |
27e2564a | 299 | input_filename = fc->to.filename; |
851ef036 | 300 | lineno = fc->to.lineno; /* Do we need this? */ |
0e5921e8 | 301 | |
0e5921e8 ZW |
302 | /* Hook for C++. */ |
303 | extract_interface_info (); | |
304 | } | |
8b97c5f8 ZW |
305 | |
306 | static void | |
307 | cb_def_pragma (pfile) | |
308 | cpp_reader *pfile; | |
309 | { | |
310 | /* Issue a warning message if we have been asked to do so. Ignore | |
311 | unknown pragmas in system headers unless an explicit | |
312 | -Wunknown-pragmas has been given. */ | |
313 | if (warn_unknown_pragmas > in_system_header) | |
314 | { | |
23356f93 ZW |
315 | const unsigned char *space, *name = 0; |
316 | cpp_token s; | |
317 | ||
318 | cpp_get_token (pfile, &s); | |
319 | space = cpp_token_as_text (pfile, &s); | |
320 | cpp_get_token (pfile, &s); | |
321 | if (s.type == CPP_NAME) | |
322 | name = cpp_token_as_text (pfile, &s); | |
8b97c5f8 | 323 | |
851ef036 | 324 | lineno = cpp_get_line (parse_in)->line; |
8b97c5f8 ZW |
325 | if (name) |
326 | warning ("ignoring #pragma %s %s", space, name); | |
327 | else | |
328 | warning ("ignoring #pragma %s", space); | |
329 | } | |
330 | } | |
0e5921e8 | 331 | |
65289a3a NB |
332 | /* #define callback for DWARF and DWARF2 debug info. */ |
333 | static void | |
334 | cb_define (pfile, node) | |
335 | cpp_reader *pfile; | |
336 | cpp_hashnode *node; | |
337 | { | |
7f905405 NB |
338 | (*debug_hooks->define) (cpp_get_line (pfile)->line, |
339 | (const char *) cpp_macro_definition (pfile, node)); | |
65289a3a NB |
340 | } |
341 | ||
342 | /* #undef callback for DWARF and DWARF2 debug info. */ | |
343 | static void | |
344 | cb_undef (pfile, node) | |
7f905405 | 345 | cpp_reader *pfile; |
65289a3a NB |
346 | cpp_hashnode *node; |
347 | { | |
7f905405 NB |
348 | (*debug_hooks->undef) (cpp_get_line (pfile)->line, |
349 | (const char *) NODE_NAME (node)); | |
65289a3a NB |
350 | } |
351 | ||
0e5921e8 ZW |
352 | #if 0 /* not yet */ |
353 | /* Returns nonzero if C is a universal-character-name. Give an error if it | |
354 | is not one which may appear in an identifier, as per [extendid]. | |
355 | ||
356 | Note that extended character support in identifiers has not yet been | |
357 | implemented. It is my personal opinion that this is not a desirable | |
358 | feature. Portable code cannot count on support for more than the basic | |
359 | identifier character set. */ | |
360 | ||
361 | static inline int | |
362 | is_extended_char (c) | |
363 | int c; | |
364 | { | |
365 | #ifdef TARGET_EBCDIC | |
366 | return 0; | |
367 | #else | |
368 | /* ASCII. */ | |
369 | if (c < 0x7f) | |
370 | return 0; | |
371 | ||
372 | /* None of the valid chars are outside the Basic Multilingual Plane (the | |
373 | low 16 bits). */ | |
374 | if (c > 0xffff) | |
375 | { | |
376 | error ("universal-character-name '\\U%08x' not valid in identifier", c); | |
377 | return 1; | |
378 | } | |
379 | ||
380 | /* Latin */ | |
381 | if ((c >= 0x00c0 && c <= 0x00d6) | |
382 | || (c >= 0x00d8 && c <= 0x00f6) | |
383 | || (c >= 0x00f8 && c <= 0x01f5) | |
384 | || (c >= 0x01fa && c <= 0x0217) | |
385 | || (c >= 0x0250 && c <= 0x02a8) | |
386 | || (c >= 0x1e00 && c <= 0x1e9a) | |
387 | || (c >= 0x1ea0 && c <= 0x1ef9)) | |
388 | return 1; | |
389 | ||
390 | /* Greek */ | |
391 | if ((c == 0x0384) | |
392 | || (c >= 0x0388 && c <= 0x038a) | |
393 | || (c == 0x038c) | |
394 | || (c >= 0x038e && c <= 0x03a1) | |
395 | || (c >= 0x03a3 && c <= 0x03ce) | |
396 | || (c >= 0x03d0 && c <= 0x03d6) | |
397 | || (c == 0x03da) | |
398 | || (c == 0x03dc) | |
399 | || (c == 0x03de) | |
400 | || (c == 0x03e0) | |
401 | || (c >= 0x03e2 && c <= 0x03f3) | |
402 | || (c >= 0x1f00 && c <= 0x1f15) | |
403 | || (c >= 0x1f18 && c <= 0x1f1d) | |
404 | || (c >= 0x1f20 && c <= 0x1f45) | |
405 | || (c >= 0x1f48 && c <= 0x1f4d) | |
406 | || (c >= 0x1f50 && c <= 0x1f57) | |
407 | || (c == 0x1f59) | |
408 | || (c == 0x1f5b) | |
409 | || (c == 0x1f5d) | |
410 | || (c >= 0x1f5f && c <= 0x1f7d) | |
411 | || (c >= 0x1f80 && c <= 0x1fb4) | |
412 | || (c >= 0x1fb6 && c <= 0x1fbc) | |
413 | || (c >= 0x1fc2 && c <= 0x1fc4) | |
414 | || (c >= 0x1fc6 && c <= 0x1fcc) | |
415 | || (c >= 0x1fd0 && c <= 0x1fd3) | |
416 | || (c >= 0x1fd6 && c <= 0x1fdb) | |
417 | || (c >= 0x1fe0 && c <= 0x1fec) | |
418 | || (c >= 0x1ff2 && c <= 0x1ff4) | |
419 | || (c >= 0x1ff6 && c <= 0x1ffc)) | |
420 | return 1; | |
421 | ||
422 | /* Cyrillic */ | |
423 | if ((c >= 0x0401 && c <= 0x040d) | |
424 | || (c >= 0x040f && c <= 0x044f) | |
425 | || (c >= 0x0451 && c <= 0x045c) | |
426 | || (c >= 0x045e && c <= 0x0481) | |
427 | || (c >= 0x0490 && c <= 0x04c4) | |
428 | || (c >= 0x04c7 && c <= 0x04c8) | |
429 | || (c >= 0x04cb && c <= 0x04cc) | |
430 | || (c >= 0x04d0 && c <= 0x04eb) | |
431 | || (c >= 0x04ee && c <= 0x04f5) | |
432 | || (c >= 0x04f8 && c <= 0x04f9)) | |
433 | return 1; | |
434 | ||
435 | /* Armenian */ | |
436 | if ((c >= 0x0531 && c <= 0x0556) | |
437 | || (c >= 0x0561 && c <= 0x0587)) | |
438 | return 1; | |
439 | ||
440 | /* Hebrew */ | |
441 | if ((c >= 0x05d0 && c <= 0x05ea) | |
442 | || (c >= 0x05f0 && c <= 0x05f4)) | |
443 | return 1; | |
444 | ||
445 | /* Arabic */ | |
446 | if ((c >= 0x0621 && c <= 0x063a) | |
447 | || (c >= 0x0640 && c <= 0x0652) | |
448 | || (c >= 0x0670 && c <= 0x06b7) | |
449 | || (c >= 0x06ba && c <= 0x06be) | |
450 | || (c >= 0x06c0 && c <= 0x06ce) | |
451 | || (c >= 0x06e5 && c <= 0x06e7)) | |
452 | return 1; | |
453 | ||
454 | /* Devanagari */ | |
455 | if ((c >= 0x0905 && c <= 0x0939) | |
456 | || (c >= 0x0958 && c <= 0x0962)) | |
457 | return 1; | |
458 | ||
459 | /* Bengali */ | |
460 | if ((c >= 0x0985 && c <= 0x098c) | |
461 | || (c >= 0x098f && c <= 0x0990) | |
462 | || (c >= 0x0993 && c <= 0x09a8) | |
463 | || (c >= 0x09aa && c <= 0x09b0) | |
464 | || (c == 0x09b2) | |
465 | || (c >= 0x09b6 && c <= 0x09b9) | |
466 | || (c >= 0x09dc && c <= 0x09dd) | |
467 | || (c >= 0x09df && c <= 0x09e1) | |
468 | || (c >= 0x09f0 && c <= 0x09f1)) | |
469 | return 1; | |
470 | ||
471 | /* Gurmukhi */ | |
472 | if ((c >= 0x0a05 && c <= 0x0a0a) | |
473 | || (c >= 0x0a0f && c <= 0x0a10) | |
474 | || (c >= 0x0a13 && c <= 0x0a28) | |
475 | || (c >= 0x0a2a && c <= 0x0a30) | |
476 | || (c >= 0x0a32 && c <= 0x0a33) | |
477 | || (c >= 0x0a35 && c <= 0x0a36) | |
478 | || (c >= 0x0a38 && c <= 0x0a39) | |
479 | || (c >= 0x0a59 && c <= 0x0a5c) | |
480 | || (c == 0x0a5e)) | |
481 | return 1; | |
482 | ||
483 | /* Gujarati */ | |
484 | if ((c >= 0x0a85 && c <= 0x0a8b) | |
485 | || (c == 0x0a8d) | |
486 | || (c >= 0x0a8f && c <= 0x0a91) | |
487 | || (c >= 0x0a93 && c <= 0x0aa8) | |
488 | || (c >= 0x0aaa && c <= 0x0ab0) | |
489 | || (c >= 0x0ab2 && c <= 0x0ab3) | |
490 | || (c >= 0x0ab5 && c <= 0x0ab9) | |
491 | || (c == 0x0ae0)) | |
492 | return 1; | |
493 | ||
494 | /* Oriya */ | |
495 | if ((c >= 0x0b05 && c <= 0x0b0c) | |
496 | || (c >= 0x0b0f && c <= 0x0b10) | |
497 | || (c >= 0x0b13 && c <= 0x0b28) | |
498 | || (c >= 0x0b2a && c <= 0x0b30) | |
499 | || (c >= 0x0b32 && c <= 0x0b33) | |
500 | || (c >= 0x0b36 && c <= 0x0b39) | |
501 | || (c >= 0x0b5c && c <= 0x0b5d) | |
502 | || (c >= 0x0b5f && c <= 0x0b61)) | |
503 | return 1; | |
504 | ||
505 | /* Tamil */ | |
506 | if ((c >= 0x0b85 && c <= 0x0b8a) | |
507 | || (c >= 0x0b8e && c <= 0x0b90) | |
508 | || (c >= 0x0b92 && c <= 0x0b95) | |
509 | || (c >= 0x0b99 && c <= 0x0b9a) | |
510 | || (c == 0x0b9c) | |
511 | || (c >= 0x0b9e && c <= 0x0b9f) | |
512 | || (c >= 0x0ba3 && c <= 0x0ba4) | |
513 | || (c >= 0x0ba8 && c <= 0x0baa) | |
514 | || (c >= 0x0bae && c <= 0x0bb5) | |
515 | || (c >= 0x0bb7 && c <= 0x0bb9)) | |
516 | return 1; | |
517 | ||
518 | /* Telugu */ | |
519 | if ((c >= 0x0c05 && c <= 0x0c0c) | |
520 | || (c >= 0x0c0e && c <= 0x0c10) | |
521 | || (c >= 0x0c12 && c <= 0x0c28) | |
522 | || (c >= 0x0c2a && c <= 0x0c33) | |
523 | || (c >= 0x0c35 && c <= 0x0c39) | |
524 | || (c >= 0x0c60 && c <= 0x0c61)) | |
525 | return 1; | |
526 | ||
527 | /* Kannada */ | |
528 | if ((c >= 0x0c85 && c <= 0x0c8c) | |
529 | || (c >= 0x0c8e && c <= 0x0c90) | |
530 | || (c >= 0x0c92 && c <= 0x0ca8) | |
531 | || (c >= 0x0caa && c <= 0x0cb3) | |
532 | || (c >= 0x0cb5 && c <= 0x0cb9) | |
533 | || (c >= 0x0ce0 && c <= 0x0ce1)) | |
534 | return 1; | |
535 | ||
536 | /* Malayalam */ | |
537 | if ((c >= 0x0d05 && c <= 0x0d0c) | |
538 | || (c >= 0x0d0e && c <= 0x0d10) | |
539 | || (c >= 0x0d12 && c <= 0x0d28) | |
540 | || (c >= 0x0d2a && c <= 0x0d39) | |
541 | || (c >= 0x0d60 && c <= 0x0d61)) | |
542 | return 1; | |
543 | ||
544 | /* Thai */ | |
545 | if ((c >= 0x0e01 && c <= 0x0e30) | |
546 | || (c >= 0x0e32 && c <= 0x0e33) | |
547 | || (c >= 0x0e40 && c <= 0x0e46) | |
548 | || (c >= 0x0e4f && c <= 0x0e5b)) | |
549 | return 1; | |
550 | ||
551 | /* Lao */ | |
552 | if ((c >= 0x0e81 && c <= 0x0e82) | |
553 | || (c == 0x0e84) | |
554 | || (c == 0x0e87) | |
555 | || (c == 0x0e88) | |
556 | || (c == 0x0e8a) | |
557 | || (c == 0x0e0d) | |
558 | || (c >= 0x0e94 && c <= 0x0e97) | |
559 | || (c >= 0x0e99 && c <= 0x0e9f) | |
560 | || (c >= 0x0ea1 && c <= 0x0ea3) | |
561 | || (c == 0x0ea5) | |
562 | || (c == 0x0ea7) | |
563 | || (c == 0x0eaa) | |
564 | || (c == 0x0eab) | |
565 | || (c >= 0x0ead && c <= 0x0eb0) | |
566 | || (c == 0x0eb2) | |
567 | || (c == 0x0eb3) | |
568 | || (c == 0x0ebd) | |
569 | || (c >= 0x0ec0 && c <= 0x0ec4) | |
570 | || (c == 0x0ec6)) | |
571 | return 1; | |
572 | ||
573 | /* Georgian */ | |
574 | if ((c >= 0x10a0 && c <= 0x10c5) | |
575 | || (c >= 0x10d0 && c <= 0x10f6)) | |
576 | return 1; | |
577 | ||
578 | /* Hiragana */ | |
579 | if ((c >= 0x3041 && c <= 0x3094) | |
580 | || (c >= 0x309b && c <= 0x309e)) | |
581 | return 1; | |
582 | ||
583 | /* Katakana */ | |
584 | if ((c >= 0x30a1 && c <= 0x30fe)) | |
585 | return 1; | |
586 | ||
587 | /* Bopmofo */ | |
588 | if ((c >= 0x3105 && c <= 0x312c)) | |
589 | return 1; | |
590 | ||
591 | /* Hangul */ | |
592 | if ((c >= 0x1100 && c <= 0x1159) | |
593 | || (c >= 0x1161 && c <= 0x11a2) | |
594 | || (c >= 0x11a8 && c <= 0x11f9)) | |
595 | return 1; | |
596 | ||
597 | /* CJK Unified Ideographs */ | |
598 | if ((c >= 0xf900 && c <= 0xfa2d) | |
599 | || (c >= 0xfb1f && c <= 0xfb36) | |
600 | || (c >= 0xfb38 && c <= 0xfb3c) | |
601 | || (c == 0xfb3e) | |
602 | || (c >= 0xfb40 && c <= 0xfb41) | |
603 | || (c >= 0xfb42 && c <= 0xfb44) | |
604 | || (c >= 0xfb46 && c <= 0xfbb1) | |
605 | || (c >= 0xfbd3 && c <= 0xfd3f) | |
606 | || (c >= 0xfd50 && c <= 0xfd8f) | |
607 | || (c >= 0xfd92 && c <= 0xfdc7) | |
608 | || (c >= 0xfdf0 && c <= 0xfdfb) | |
609 | || (c >= 0xfe70 && c <= 0xfe72) | |
610 | || (c == 0xfe74) | |
611 | || (c >= 0xfe76 && c <= 0xfefc) | |
612 | || (c >= 0xff21 && c <= 0xff3a) | |
613 | || (c >= 0xff41 && c <= 0xff5a) | |
614 | || (c >= 0xff66 && c <= 0xffbe) | |
615 | || (c >= 0xffc2 && c <= 0xffc7) | |
616 | || (c >= 0xffca && c <= 0xffcf) | |
617 | || (c >= 0xffd2 && c <= 0xffd7) | |
618 | || (c >= 0xffda && c <= 0xffdc) | |
619 | || (c >= 0x4e00 && c <= 0x9fa5)) | |
620 | return 1; | |
621 | ||
622 | error ("universal-character-name '\\u%04x' not valid in identifier", c); | |
623 | return 1; | |
624 | #endif | |
625 | } | |
626 | ||
627 | /* Add the UTF-8 representation of C to the token_buffer. */ | |
628 | ||
629 | static void | |
630 | utf8_extend_token (c) | |
631 | int c; | |
e8bbfc4e | 632 | { |
0e5921e8 ZW |
633 | int shift, mask; |
634 | ||
635 | if (c <= 0x0000007f) | |
636 | { | |
637 | extend_token (c); | |
638 | return; | |
639 | } | |
640 | else if (c <= 0x000007ff) | |
641 | shift = 6, mask = 0xc0; | |
642 | else if (c <= 0x0000ffff) | |
643 | shift = 12, mask = 0xe0; | |
644 | else if (c <= 0x001fffff) | |
645 | shift = 18, mask = 0xf0; | |
646 | else if (c <= 0x03ffffff) | |
647 | shift = 24, mask = 0xf8; | |
e8bbfc4e | 648 | else |
0e5921e8 ZW |
649 | shift = 30, mask = 0xfc; |
650 | ||
651 | extend_token (mask | (c >> shift)); | |
652 | do | |
653 | { | |
654 | shift -= 6; | |
655 | extend_token ((unsigned char) (0x80 | (c >> shift))); | |
656 | } | |
657 | while (shift); | |
e8bbfc4e | 658 | } |
0e5921e8 | 659 | #endif |
e8bbfc4e RK |
660 | |
661 | #if 0 | |
e8bbfc4e RK |
662 | struct try_type |
663 | { | |
664 | tree *node_var; | |
665 | char unsigned_flag; | |
666 | char long_flag; | |
667 | char long_long_flag; | |
668 | }; | |
669 | ||
75cb8865 | 670 | struct try_type type_sequence[] = |
e8bbfc4e RK |
671 | { |
672 | { &integer_type_node, 0, 0, 0}, | |
673 | { &unsigned_type_node, 1, 0, 0}, | |
674 | { &long_integer_type_node, 0, 1, 0}, | |
675 | { &long_unsigned_type_node, 1, 1, 0}, | |
676 | { &long_long_integer_type_node, 0, 1, 1}, | |
677 | { &long_long_unsigned_type_node, 1, 1, 1} | |
678 | }; | |
679 | #endif /* 0 */ | |
680 | \f | |
ed513abf KG |
681 | struct pf_args |
682 | { | |
683 | /* Input */ | |
0e5921e8 ZW |
684 | const char *str; |
685 | int fflag; | |
686 | int lflag; | |
ed513abf | 687 | int base; |
fbb18613 | 688 | /* Output */ |
ed513abf | 689 | int conversion_errno; |
ed513abf | 690 | REAL_VALUE_TYPE value; |
0e5921e8 | 691 | tree type; |
ed513abf KG |
692 | }; |
693 | ||
694 | static void | |
695 | parse_float (data) | |
696 | PTR data; | |
697 | { | |
698 | struct pf_args * args = (struct pf_args *) data; | |
0e5921e8 ZW |
699 | const char *typename; |
700 | ||
fbb18613 JM |
701 | args->conversion_errno = 0; |
702 | args->type = double_type_node; | |
0e5921e8 | 703 | typename = "double"; |
ed513abf KG |
704 | |
705 | /* The second argument, machine_mode, of REAL_VALUE_ATOF | |
706 | tells the desired precision of the binary result | |
707 | of decimal-to-binary conversion. */ | |
708 | ||
0e5921e8 | 709 | if (args->fflag) |
ed513abf | 710 | { |
0e5921e8 ZW |
711 | if (args->lflag) |
712 | error ("both 'f' and 'l' suffixes on floating constant"); | |
ed513abf KG |
713 | |
714 | args->type = float_type_node; | |
0e5921e8 | 715 | typename = "float"; |
ed513abf | 716 | } |
0e5921e8 | 717 | else if (args->lflag) |
ed513abf KG |
718 | { |
719 | args->type = long_double_type_node; | |
0e5921e8 | 720 | typename = "long double"; |
ed513abf | 721 | } |
0e5921e8 | 722 | else if (flag_single_precision_constant) |
ed513abf | 723 | { |
0e5921e8 ZW |
724 | args->type = float_type_node; |
725 | typename = "float"; | |
ed513abf | 726 | } |
0e5921e8 ZW |
727 | |
728 | errno = 0; | |
729 | if (args->base == 16) | |
730 | args->value = REAL_VALUE_HTOF (args->str, TYPE_MODE (args->type)); | |
731 | else | |
732 | args->value = REAL_VALUE_ATOF (args->str, TYPE_MODE (args->type)); | |
733 | ||
734 | args->conversion_errno = errno; | |
735 | /* A diagnostic is required here by some ISO C testsuites. | |
736 | This is not pedwarn, because some people don't want | |
737 | an error for this. */ | |
738 | if (REAL_VALUE_ISINF (args->value) && pedantic) | |
739 | warning ("floating point number exceeds range of '%s'", typename); | |
ed513abf KG |
740 | } |
741 | ||
0e5921e8 ZW |
742 | int |
743 | c_lex (value) | |
744 | tree *value; | |
fbb18613 | 745 | { |
23356f93 | 746 | cpp_token tok; |
0e5921e8 ZW |
747 | enum cpp_ttype type; |
748 | ||
749 | retry: | |
750 | timevar_push (TV_CPP); | |
cf44ea52 | 751 | cpp_get_token (parse_in, &tok); |
0e5921e8 ZW |
752 | timevar_pop (TV_CPP); |
753 | ||
754 | /* The C++ front end does horrible things with the current line | |
755 | number. To ensure an accurate line number, we must reset it | |
23356f93 | 756 | every time we return a token. */ |
851ef036 | 757 | lineno = cpp_get_line (parse_in)->line; |
0e5921e8 ZW |
758 | |
759 | *value = NULL_TREE; | |
23356f93 | 760 | type = tok.type; |
0e5921e8 ZW |
761 | switch (type) |
762 | { | |
763 | case CPP_OPEN_BRACE: indent_level++; break; | |
764 | case CPP_CLOSE_BRACE: indent_level--; break; | |
765 | ||
6c53ebff | 766 | /* Issue this error here, where we can get at tok.val.c. */ |
0e5921e8 | 767 | case CPP_OTHER: |
6c53ebff NB |
768 | if (ISGRAPH (tok.val.c)) |
769 | error ("stray '%c' in program", tok.val.c); | |
0e5921e8 | 770 | else |
5677efb0 | 771 | error ("stray '\\%o' in program", tok.val.c); |
0e5921e8 ZW |
772 | goto retry; |
773 | ||
0e5921e8 | 774 | case CPP_NAME: |
083e9f92 | 775 | *value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok.val.node)); |
0e5921e8 | 776 | break; |
fbb18613 | 777 | |
0e5921e8 | 778 | case CPP_NUMBER: |
23356f93 | 779 | *value = lex_number ((const char *)tok.val.str.text, tok.val.str.len); |
0e5921e8 | 780 | break; |
93868d11 | 781 | |
0e5921e8 ZW |
782 | case CPP_CHAR: |
783 | case CPP_WCHAR: | |
c8a96070 | 784 | *value = lex_charconst (&tok); |
0e5921e8 | 785 | break; |
fbb18613 | 786 | |
0e5921e8 ZW |
787 | case CPP_STRING: |
788 | case CPP_WSTRING: | |
23356f93 ZW |
789 | *value = lex_string ((const char *)tok.val.str.text, |
790 | tok.val.str.len, tok.type == CPP_WSTRING); | |
0e5921e8 | 791 | break; |
fbb18613 | 792 | |
0e5921e8 ZW |
793 | /* These tokens should not be visible outside cpplib. */ |
794 | case CPP_HEADER_NAME: | |
795 | case CPP_COMMENT: | |
796 | case CPP_MACRO_ARG: | |
0e5921e8 ZW |
797 | abort (); |
798 | ||
799 | default: break; | |
800 | } | |
801 | ||
802 | return type; | |
0e5921e8 | 803 | } |
8d9bfdc5 | 804 | |
0e5921e8 | 805 | #define ERROR(msgid) do { error(msgid); goto syntax_error; } while(0) |
75cb8865 | 806 | |
0e5921e8 ZW |
807 | static tree |
808 | lex_number (str, len) | |
809 | const char *str; | |
810 | unsigned int len; | |
811 | { | |
812 | int base = 10; | |
813 | int count = 0; | |
814 | int largest_digit = 0; | |
815 | int numdigits = 0; | |
816 | int overflow = 0; | |
817 | int c; | |
818 | tree value; | |
819 | const char *p; | |
820 | enum anon1 { NOT_FLOAT = 0, AFTER_POINT, AFTER_EXPON } floatflag = NOT_FLOAT; | |
821 | ||
822 | /* We actually store only HOST_BITS_PER_CHAR bits in each part. | |
823 | The code below which fills the parts array assumes that a host | |
824 | int is at least twice as wide as a host char, and that | |
825 | HOST_BITS_PER_WIDE_INT is an even multiple of HOST_BITS_PER_CHAR. | |
826 | Two HOST_WIDE_INTs is the largest int literal we can store. | |
827 | In order to detect overflow below, the number of parts (TOTAL_PARTS) | |
828 | must be exactly the number of parts needed to hold the bits | |
829 | of two HOST_WIDE_INTs. */ | |
830 | #define TOTAL_PARTS ((HOST_BITS_PER_WIDE_INT / HOST_BITS_PER_CHAR) * 2) | |
831 | unsigned int parts[TOTAL_PARTS]; | |
832 | ||
833 | /* Optimize for most frequent case. */ | |
834 | if (len == 1) | |
835 | { | |
836 | if (*str == '0') | |
837 | return integer_zero_node; | |
838 | else if (*str == '1') | |
839 | return integer_one_node; | |
840 | else | |
841 | return build_int_2 (*str - '0', 0); | |
842 | } | |
e8bbfc4e | 843 | |
0e5921e8 ZW |
844 | for (count = 0; count < TOTAL_PARTS; count++) |
845 | parts[count] = 0; | |
e8bbfc4e | 846 | |
0e5921e8 ZW |
847 | /* len is known to be >1 at this point. */ |
848 | p = str; | |
e8bbfc4e | 849 | |
0e5921e8 ZW |
850 | if (len > 2 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) |
851 | { | |
852 | base = 16; | |
853 | p = str + 2; | |
854 | } | |
855 | /* The ISDIGIT check is so we are not confused by a suffix on 0. */ | |
856 | else if (str[0] == '0' && ISDIGIT (str[1])) | |
857 | { | |
858 | base = 8; | |
859 | p = str + 1; | |
860 | } | |
e8bbfc4e | 861 | |
0e5921e8 ZW |
862 | do |
863 | { | |
864 | c = *p++; | |
88d92ca5 | 865 | |
0e5921e8 ZW |
866 | if (c == '.') |
867 | { | |
c215b29f | 868 | if (floatflag == AFTER_POINT) |
0e5921e8 ZW |
869 | ERROR ("too many decimal points in floating constant"); |
870 | else if (floatflag == AFTER_EXPON) | |
871 | ERROR ("decimal point in exponent - impossible!"); | |
872 | else | |
873 | floatflag = AFTER_POINT; | |
c832a30e | 874 | |
0e5921e8 ZW |
875 | if (base == 8) |
876 | base = 10; | |
877 | } | |
878 | else if (c == '_') | |
879 | /* Possible future extension: silently ignore _ in numbers, | |
880 | permitting cosmetic grouping - e.g. 0x8000_0000 == 0x80000000 | |
881 | but somewhat easier to read. Ada has this? */ | |
882 | ERROR ("underscore in number"); | |
883 | else | |
884 | { | |
885 | int n; | |
886 | /* It is not a decimal point. | |
887 | It should be a digit (perhaps a hex digit). */ | |
0e0fda0d | 888 | |
0e5921e8 ZW |
889 | if (ISDIGIT (c)) |
890 | { | |
891 | n = c - '0'; | |
892 | } | |
893 | else if (base <= 10 && (c == 'e' || c == 'E')) | |
894 | { | |
895 | base = 10; | |
896 | floatflag = AFTER_EXPON; | |
897 | break; | |
898 | } | |
899 | else if (base == 16 && (c == 'p' || c == 'P')) | |
900 | { | |
901 | floatflag = AFTER_EXPON; | |
902 | break; /* start of exponent */ | |
903 | } | |
904 | else if (base == 16 && c >= 'a' && c <= 'f') | |
905 | { | |
906 | n = c - 'a' + 10; | |
907 | } | |
908 | else if (base == 16 && c >= 'A' && c <= 'F') | |
909 | { | |
910 | n = c - 'A' + 10; | |
911 | } | |
912 | else | |
913 | { | |
914 | p--; | |
915 | break; /* start of suffix */ | |
916 | } | |
0e0fda0d | 917 | |
0e5921e8 ZW |
918 | if (n >= largest_digit) |
919 | largest_digit = n; | |
920 | numdigits++; | |
0e0fda0d | 921 | |
0e5921e8 ZW |
922 | for (count = 0; count < TOTAL_PARTS; count++) |
923 | { | |
924 | parts[count] *= base; | |
925 | if (count) | |
926 | { | |
927 | parts[count] | |
928 | += (parts[count-1] >> HOST_BITS_PER_CHAR); | |
929 | parts[count-1] | |
930 | &= (1 << HOST_BITS_PER_CHAR) - 1; | |
931 | } | |
932 | else | |
933 | parts[0] += n; | |
934 | } | |
e8bbfc4e | 935 | |
0e5921e8 ZW |
936 | /* If the highest-order part overflows (gets larger than |
937 | a host char will hold) then the whole number has | |
938 | overflowed. Record this and truncate the highest-order | |
939 | part. */ | |
940 | if (parts[TOTAL_PARTS - 1] >> HOST_BITS_PER_CHAR) | |
941 | { | |
942 | overflow = 1; | |
943 | parts[TOTAL_PARTS - 1] &= (1 << HOST_BITS_PER_CHAR) - 1; | |
944 | } | |
945 | } | |
946 | } | |
947 | while (p < str + len); | |
91b0989e | 948 | |
0e5921e8 ZW |
949 | /* This can happen on input like `int i = 0x;' */ |
950 | if (numdigits == 0) | |
951 | ERROR ("numeric constant with no digits"); | |
91b0989e | 952 | |
0e5921e8 ZW |
953 | if (largest_digit >= base) |
954 | ERROR ("numeric constant contains digits beyond the radix"); | |
e8bbfc4e | 955 | |
0e5921e8 ZW |
956 | if (floatflag != NOT_FLOAT) |
957 | { | |
958 | tree type; | |
959 | int imag, fflag, lflag, conversion_errno; | |
960 | REAL_VALUE_TYPE real; | |
961 | struct pf_args args; | |
962 | char *copy; | |
963 | ||
c215b29f JM |
964 | if (base == 16 && pedantic && !flag_isoc99) |
965 | pedwarn ("floating constant may not be in radix 16"); | |
966 | ||
0e5921e8 ZW |
967 | if (base == 16 && floatflag != AFTER_EXPON) |
968 | ERROR ("hexadecimal floating constant has no exponent"); | |
969 | ||
970 | /* Read explicit exponent if any, and put it in tokenbuf. */ | |
971 | if ((base == 10 && ((c == 'e') || (c == 'E'))) | |
972 | || (base == 16 && (c == 'p' || c == 'P'))) | |
973 | { | |
974 | if (p < str + len) | |
975 | c = *p++; | |
976 | if (p < str + len && (c == '+' || c == '-')) | |
977 | c = *p++; | |
978 | /* Exponent is decimal, even if string is a hex float. */ | |
979 | if (! ISDIGIT (c)) | |
980 | ERROR ("floating constant exponent has no digits"); | |
981 | while (p < str + len && ISDIGIT (c)) | |
982 | c = *p++; | |
983 | if (! ISDIGIT (c)) | |
984 | p--; | |
985 | } | |
56f48ce9 | 986 | |
0e5921e8 ZW |
987 | /* Copy the float constant now; we don't want any suffixes in the |
988 | string passed to parse_float. */ | |
989 | copy = alloca (p - str + 1); | |
990 | memcpy (copy, str, p - str); | |
991 | copy[p - str] = '\0'; | |
e8bbfc4e | 992 | |
0e5921e8 ZW |
993 | /* Now parse suffixes. */ |
994 | fflag = lflag = imag = 0; | |
995 | while (p < str + len) | |
996 | switch (*p++) | |
e8bbfc4e | 997 | { |
0e5921e8 ZW |
998 | case 'f': case 'F': |
999 | if (fflag) | |
1000 | ERROR ("more than one 'f' suffix on floating constant"); | |
7065e130 | 1001 | else if (warn_traditional && !in_system_header |
c691145a | 1002 | && ! cpp_sys_macro_p (parse_in)) |
0e5921e8 | 1003 | warning ("traditional C rejects the 'f' suffix"); |
e8bbfc4e | 1004 | |
0e5921e8 ZW |
1005 | fflag = 1; |
1006 | break; | |
e8bbfc4e | 1007 | |
0e5921e8 ZW |
1008 | case 'l': case 'L': |
1009 | if (lflag) | |
1010 | ERROR ("more than one 'l' suffix on floating constant"); | |
7065e130 | 1011 | else if (warn_traditional && !in_system_header |
c691145a | 1012 | && ! cpp_sys_macro_p (parse_in)) |
0e5921e8 | 1013 | warning ("traditional C rejects the 'l' suffix"); |
56f48ce9 | 1014 | |
0e5921e8 ZW |
1015 | lflag = 1; |
1016 | break; | |
e8bbfc4e | 1017 | |
0e5921e8 ZW |
1018 | case 'i': case 'I': |
1019 | case 'j': case 'J': | |
1020 | if (imag) | |
1021 | ERROR ("more than one 'i' or 'j' suffix on floating constant"); | |
1022 | else if (pedantic) | |
1023 | pedwarn ("ISO C forbids imaginary numeric constants"); | |
1024 | imag = 1; | |
1025 | break; | |
e8bbfc4e | 1026 | |
0e5921e8 ZW |
1027 | default: |
1028 | ERROR ("invalid suffix on floating constant"); | |
e8bbfc4e RK |
1029 | } |
1030 | ||
0e5921e8 ZW |
1031 | /* Setup input for parse_float() */ |
1032 | args.str = copy; | |
1033 | args.fflag = fflag; | |
1034 | args.lflag = lflag; | |
1035 | args.base = base; | |
e8bbfc4e | 1036 | |
0e5921e8 ZW |
1037 | /* Convert string to a double, checking for overflow. */ |
1038 | if (do_float_handler (parse_float, (PTR) &args)) | |
1039 | { | |
1040 | /* Receive output from parse_float() */ | |
1041 | real = args.value; | |
1042 | } | |
1043 | else | |
1044 | /* We got an exception from parse_float() */ | |
1045 | ERROR ("floating constant out of range"); | |
e8bbfc4e | 1046 | |
0e5921e8 ZW |
1047 | /* Receive output from parse_float() */ |
1048 | conversion_errno = args.conversion_errno; | |
1049 | type = args.type; | |
1050 | ||
1051 | #ifdef ERANGE | |
1052 | /* ERANGE is also reported for underflow, | |
1053 | so test the value to distinguish overflow from that. */ | |
1054 | if (conversion_errno == ERANGE && !flag_traditional && pedantic | |
1055 | && (REAL_VALUES_LESS (dconst1, real) | |
1056 | || REAL_VALUES_LESS (real, dconstm1))) | |
1057 | warning ("floating point number exceeds range of 'double'"); | |
56f48ce9 | 1058 | #endif |
e8bbfc4e | 1059 | |
0e5921e8 ZW |
1060 | /* Create a node with determined type and value. */ |
1061 | if (imag) | |
1062 | value = build_complex (NULL_TREE, convert (type, integer_zero_node), | |
1063 | build_real (type, real)); | |
1064 | else | |
1065 | value = build_real (type, real); | |
1066 | } | |
1067 | else | |
1068 | { | |
1069 | tree trad_type, ansi_type, type; | |
1070 | HOST_WIDE_INT high, low; | |
1071 | int spec_unsigned = 0; | |
1072 | int spec_long = 0; | |
1073 | int spec_long_long = 0; | |
1074 | int spec_imag = 0; | |
1075 | int suffix_lu = 0; | |
1076 | int warn = 0, i; | |
1077 | ||
1078 | trad_type = ansi_type = type = NULL_TREE; | |
1079 | while (p < str + len) | |
1080 | { | |
1081 | c = *p++; | |
1082 | switch (c) | |
1083 | { | |
1084 | case 'u': case 'U': | |
1085 | if (spec_unsigned) | |
1086 | error ("two 'u' suffixes on integer constant"); | |
7065e130 | 1087 | else if (warn_traditional && !in_system_header |
c691145a | 1088 | && ! cpp_sys_macro_p (parse_in)) |
0e5921e8 ZW |
1089 | warning ("traditional C rejects the 'u' suffix"); |
1090 | ||
1091 | spec_unsigned = 1; | |
1092 | if (spec_long) | |
1093 | suffix_lu = 1; | |
1094 | break; | |
e8bbfc4e | 1095 | |
0e5921e8 ZW |
1096 | case 'l': case 'L': |
1097 | if (spec_long) | |
1098 | { | |
1099 | if (spec_long_long) | |
1100 | error ("three 'l' suffixes on integer constant"); | |
1101 | else if (suffix_lu) | |
1102 | error ("'lul' is not a valid integer suffix"); | |
1103 | else if (c != spec_long) | |
1104 | error ("'Ll' and 'lL' are not valid integer suffixes"); | |
1105 | else if (pedantic && ! flag_isoc99 | |
1106 | && ! in_system_header && warn_long_long) | |
1107 | pedwarn ("ISO C89 forbids long long integer constants"); | |
1108 | spec_long_long = 1; | |
1109 | } | |
1110 | spec_long = c; | |
1111 | break; | |
56f48ce9 | 1112 | |
0e5921e8 ZW |
1113 | case 'i': case 'I': case 'j': case 'J': |
1114 | if (spec_imag) | |
1115 | error ("more than one 'i' or 'j' suffix on integer constant"); | |
1116 | else if (pedantic) | |
1117 | pedwarn ("ISO C forbids imaginary numeric constants"); | |
1118 | spec_imag = 1; | |
1119 | break; | |
56f48ce9 | 1120 | |
0e5921e8 ZW |
1121 | default: |
1122 | ERROR ("invalid suffix on integer constant"); | |
1123 | } | |
1124 | } | |
56f48ce9 | 1125 | |
0e5921e8 ZW |
1126 | /* If the literal overflowed, pedwarn about it now. */ |
1127 | if (overflow) | |
1128 | { | |
1129 | warn = 1; | |
1130 | pedwarn ("integer constant is too large for this configuration of the compiler - truncated to %d bits", HOST_BITS_PER_WIDE_INT * 2); | |
1131 | } | |
e8bbfc4e | 1132 | |
0e5921e8 ZW |
1133 | /* This is simplified by the fact that our constant |
1134 | is always positive. */ | |
56f48ce9 | 1135 | |
0e5921e8 | 1136 | high = low = 0; |
e8bbfc4e | 1137 | |
0e5921e8 ZW |
1138 | for (i = 0; i < HOST_BITS_PER_WIDE_INT / HOST_BITS_PER_CHAR; i++) |
1139 | { | |
1140 | high |= ((HOST_WIDE_INT) parts[i + (HOST_BITS_PER_WIDE_INT | |
1141 | / HOST_BITS_PER_CHAR)] | |
1142 | << (i * HOST_BITS_PER_CHAR)); | |
1143 | low |= (HOST_WIDE_INT) parts[i] << (i * HOST_BITS_PER_CHAR); | |
1144 | } | |
0468bc75 | 1145 | |
0e5921e8 ZW |
1146 | value = build_int_2 (low, high); |
1147 | TREE_TYPE (value) = long_long_unsigned_type_node; | |
e8bbfc4e | 1148 | |
0e5921e8 ZW |
1149 | /* If warn_traditional, calculate both the ISO type and the |
1150 | traditional type, then see if they disagree. | |
1151 | Otherwise, calculate only the type for the dialect in use. */ | |
1152 | if (warn_traditional || flag_traditional) | |
1153 | { | |
1154 | /* Calculate the traditional type. */ | |
1155 | /* Traditionally, any constant is signed; but if unsigned is | |
1156 | specified explicitly, obey that. Use the smallest size | |
1157 | with the right number of bits, except for one special | |
1158 | case with decimal constants. */ | |
1159 | if (! spec_long && base != 10 | |
1160 | && int_fits_type_p (value, unsigned_type_node)) | |
1161 | trad_type = spec_unsigned ? unsigned_type_node : integer_type_node; | |
1162 | /* A decimal constant must be long if it does not fit in | |
1163 | type int. I think this is independent of whether the | |
1164 | constant is signed. */ | |
1165 | else if (! spec_long && base == 10 | |
1166 | && int_fits_type_p (value, integer_type_node)) | |
1167 | trad_type = spec_unsigned ? unsigned_type_node : integer_type_node; | |
1168 | else if (! spec_long_long) | |
1169 | trad_type = (spec_unsigned | |
1170 | ? long_unsigned_type_node | |
1171 | : long_integer_type_node); | |
1172 | else if (int_fits_type_p (value, | |
1173 | spec_unsigned | |
1174 | ? long_long_unsigned_type_node | |
1175 | : long_long_integer_type_node)) | |
1176 | trad_type = (spec_unsigned | |
1177 | ? long_long_unsigned_type_node | |
1178 | : long_long_integer_type_node); | |
1179 | else | |
1180 | trad_type = (spec_unsigned | |
1181 | ? widest_unsigned_literal_type_node | |
1182 | : widest_integer_literal_type_node); | |
1183 | } | |
1184 | if (warn_traditional || ! flag_traditional) | |
1185 | { | |
1186 | /* Calculate the ISO type. */ | |
1187 | if (! spec_long && ! spec_unsigned | |
1188 | && int_fits_type_p (value, integer_type_node)) | |
1189 | ansi_type = integer_type_node; | |
1190 | else if (! spec_long && (base != 10 || spec_unsigned) | |
1191 | && int_fits_type_p (value, unsigned_type_node)) | |
1192 | ansi_type = unsigned_type_node; | |
1193 | else if (! spec_unsigned && !spec_long_long | |
1194 | && int_fits_type_p (value, long_integer_type_node)) | |
1195 | ansi_type = long_integer_type_node; | |
1196 | else if (! spec_long_long | |
1197 | && int_fits_type_p (value, long_unsigned_type_node)) | |
1198 | ansi_type = long_unsigned_type_node; | |
1199 | else if (! spec_unsigned | |
1200 | && int_fits_type_p (value, long_long_integer_type_node)) | |
1201 | ansi_type = long_long_integer_type_node; | |
1202 | else if (int_fits_type_p (value, long_long_unsigned_type_node)) | |
1203 | ansi_type = long_long_unsigned_type_node; | |
1204 | else if (! spec_unsigned | |
1205 | && int_fits_type_p (value, widest_integer_literal_type_node)) | |
1206 | ansi_type = widest_integer_literal_type_node; | |
1207 | else | |
1208 | ansi_type = widest_unsigned_literal_type_node; | |
1209 | } | |
e8bbfc4e | 1210 | |
0e5921e8 | 1211 | type = flag_traditional ? trad_type : ansi_type; |
e8bbfc4e | 1212 | |
0e5921e8 ZW |
1213 | /* We assume that constants specified in a non-decimal |
1214 | base are bit patterns, and that the programmer really | |
1215 | meant what they wrote. */ | |
1216 | if (warn_traditional && !in_system_header | |
1217 | && base == 10 && trad_type != ansi_type) | |
1218 | { | |
1219 | if (TYPE_PRECISION (trad_type) != TYPE_PRECISION (ansi_type)) | |
1220 | warning ("width of integer constant changes with -traditional"); | |
1221 | else if (TREE_UNSIGNED (trad_type) != TREE_UNSIGNED (ansi_type)) | |
1222 | warning ("integer constant is unsigned in ISO C, signed with -traditional"); | |
1223 | else | |
1224 | warning ("width of integer constant may change on other systems with -traditional"); | |
1225 | } | |
e8bbfc4e | 1226 | |
b15ad712 JM |
1227 | if (pedantic && !flag_traditional && (flag_isoc99 || !spec_long_long) |
1228 | && !warn | |
1229 | && ((flag_isoc99 | |
1230 | ? TYPE_PRECISION (long_long_integer_type_node) | |
1231 | : TYPE_PRECISION (long_integer_type_node)) < TYPE_PRECISION (type))) | |
0e5921e8 ZW |
1232 | { |
1233 | warn = 1; | |
b15ad712 JM |
1234 | pedwarn ("integer constant larger than the maximum value of %s", |
1235 | (flag_isoc99 | |
1236 | ? (TREE_UNSIGNED (type) | |
1237 | ? "an unsigned long long int" | |
1238 | : "a long long int") | |
1239 | : "an unsigned long int")); | |
0e5921e8 | 1240 | } |
e8bbfc4e | 1241 | |
0e5921e8 ZW |
1242 | if (base == 10 && ! spec_unsigned && TREE_UNSIGNED (type)) |
1243 | warning ("decimal constant is so large that it is unsigned"); | |
e8bbfc4e | 1244 | |
0e5921e8 ZW |
1245 | if (spec_imag) |
1246 | { | |
1247 | if (TYPE_PRECISION (type) | |
1248 | <= TYPE_PRECISION (integer_type_node)) | |
1249 | value = build_complex (NULL_TREE, integer_zero_node, | |
1250 | convert (integer_type_node, value)); | |
1251 | else | |
1252 | ERROR ("complex integer constant is too wide for 'complex int'"); | |
1253 | } | |
1254 | else if (flag_traditional && !int_fits_type_p (value, type)) | |
1255 | /* The traditional constant 0x80000000 is signed | |
1256 | but doesn't fit in the range of int. | |
1257 | This will change it to -0x80000000, which does fit. */ | |
1258 | { | |
1259 | TREE_TYPE (value) = unsigned_type (type); | |
1260 | value = convert (type, value); | |
1261 | TREE_OVERFLOW (value) = TREE_CONSTANT_OVERFLOW (value) = 0; | |
1262 | } | |
1263 | else | |
1264 | TREE_TYPE (value) = type; | |
e8bbfc4e | 1265 | |
0e5921e8 ZW |
1266 | /* If it's still an integer (not a complex), and it doesn't |
1267 | fit in the type we choose for it, then pedwarn. */ | |
fbb18613 | 1268 | |
0e5921e8 ZW |
1269 | if (! warn |
1270 | && TREE_CODE (TREE_TYPE (value)) == INTEGER_TYPE | |
1271 | && ! int_fits_type_p (value, TREE_TYPE (value))) | |
1272 | pedwarn ("integer constant is larger than the maximum value for its type"); | |
1273 | } | |
fbb18613 | 1274 | |
0e5921e8 ZW |
1275 | if (p < str + len) |
1276 | error ("missing white space after number '%.*s'", (int) (p - str), str); | |
e8bbfc4e | 1277 | |
0e5921e8 | 1278 | return value; |
e8bbfc4e | 1279 | |
0e5921e8 ZW |
1280 | syntax_error: |
1281 | return integer_zero_node; | |
1282 | } | |
e8bbfc4e | 1283 | |
0e5921e8 ZW |
1284 | static tree |
1285 | lex_string (str, len, wide) | |
1286 | const char *str; | |
1287 | unsigned int len; | |
1288 | int wide; | |
1289 | { | |
1290 | tree value; | |
1291 | char *buf = alloca ((len + 1) * (wide ? WCHAR_BYTES : 1)); | |
1292 | char *q = buf; | |
1293 | const char *p = str, *limit = str + len; | |
1294 | unsigned int c; | |
1295 | unsigned width = wide ? WCHAR_TYPE_SIZE | |
1296 | : TYPE_PRECISION (char_type_node); | |
e9a25f70 | 1297 | |
0e5921e8 ZW |
1298 | #ifdef MULTIBYTE_CHARS |
1299 | /* Reset multibyte conversion state. */ | |
9714cf43 | 1300 | (void) local_mbtowc (NULL, NULL, 0); |
0e5921e8 | 1301 | #endif |
e9a25f70 | 1302 | |
0e5921e8 ZW |
1303 | while (p < limit) |
1304 | { | |
1305 | #ifdef MULTIBYTE_CHARS | |
1306 | wchar_t wc; | |
1307 | int char_len; | |
1308 | ||
1309 | char_len = local_mbtowc (&wc, p, limit - p); | |
1310 | if (char_len == -1) | |
1311 | { | |
1312 | warning ("Ignoring invalid multibyte character"); | |
1313 | char_len = 1; | |
1314 | c = *p++; | |
1315 | } | |
1316 | else | |
1317 | { | |
1318 | p += char_len; | |
1319 | c = wc; | |
1320 | } | |
1321 | #else | |
1322 | c = *p++; | |
1323 | #endif | |
1324 | ||
1325 | if (c == '\\' && !ignore_escape_flag) | |
1326 | { | |
62729350 NB |
1327 | unsigned int mask; |
1328 | ||
1329 | if (width < HOST_BITS_PER_INT) | |
1330 | mask = ((unsigned int) 1 << width) - 1; | |
1331 | else | |
1332 | mask = ~0; | |
1333 | c = cpp_parse_escape (parse_in, (const unsigned char **) &p, | |
1334 | (const unsigned char *) limit, | |
1335 | mask, flag_traditional); | |
0e5921e8 ZW |
1336 | } |
1337 | ||
1338 | /* Add this single character into the buffer either as a wchar_t | |
1339 | or as a single byte. */ | |
1340 | if (wide) | |
1341 | { | |
1342 | unsigned charwidth = TYPE_PRECISION (char_type_node); | |
5c80f6e6 | 1343 | unsigned bytemask = (1 << charwidth) - 1; |
0e5921e8 ZW |
1344 | int byte; |
1345 | ||
1346 | for (byte = 0; byte < WCHAR_BYTES; ++byte) | |
1347 | { | |
1348 | int n; | |
1349 | if (byte >= (int) sizeof (c)) | |
1350 | n = 0; | |
1351 | else | |
1352 | n = (c >> (byte * charwidth)) & bytemask; | |
1353 | if (BYTES_BIG_ENDIAN) | |
1354 | q[WCHAR_BYTES - byte - 1] = n; | |
1355 | else | |
1356 | q[byte] = n; | |
1357 | } | |
1358 | q += WCHAR_BYTES; | |
1359 | } | |
1360 | else | |
1361 | { | |
1362 | *q++ = c; | |
1363 | } | |
e8bbfc4e RK |
1364 | } |
1365 | ||
0e5921e8 ZW |
1366 | /* Terminate the string value, either with a single byte zero |
1367 | or with a wide zero. */ | |
e8bbfc4e | 1368 | |
0e5921e8 ZW |
1369 | if (wide) |
1370 | { | |
1371 | memset (q, 0, WCHAR_BYTES); | |
1372 | q += WCHAR_BYTES; | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | *q++ = '\0'; | |
1377 | } | |
1378 | ||
1379 | value = build_string (q - buf, buf); | |
1380 | ||
1381 | if (wide) | |
1382 | TREE_TYPE (value) = wchar_array_type_node; | |
1383 | else | |
1384 | TREE_TYPE (value) = char_array_type_node; | |
e8bbfc4e RK |
1385 | return value; |
1386 | } | |
1387 | ||
c8a96070 | 1388 | /* Converts a (possibly wide) character constant token into a tree. */ |
0e5921e8 | 1389 | static tree |
c8a96070 NB |
1390 | lex_charconst (token) |
1391 | const cpp_token *token; | |
e8bbfc4e | 1392 | { |
c8a96070 | 1393 | HOST_WIDE_INT result; |
0e5921e8 | 1394 | tree value; |
c8a96070 NB |
1395 | unsigned int chars_seen; |
1396 | ||
1397 | result = cpp_interpret_charconst (parse_in, token, warn_multichar, | |
1398 | flag_traditional, &chars_seen); | |
1399 | if (token->type == CPP_WCHAR) | |
0e5921e8 | 1400 | { |
c8a96070 NB |
1401 | value = build_int_2 (result, 0); |
1402 | TREE_TYPE (value) = wchar_type_node; | |
0e5921e8 | 1403 | } |
c8a96070 | 1404 | else |
0e5921e8 | 1405 | { |
c8a96070 NB |
1406 | if (result < 0) |
1407 | value = build_int_2 (result, -1); | |
0e5921e8 | 1408 | else |
c8a96070 NB |
1409 | value = build_int_2 (result, 0); |
1410 | ||
1411 | /* In C, a character constant has type 'int'. | |
1412 | In C++ 'char', but multi-char charconsts have type 'int'. */ | |
1413 | if (c_language == clk_cplusplus && chars_seen <= 1) | |
1414 | TREE_TYPE (value) = char_type_node; | |
0e5921e8 | 1415 | else |
c8a96070 | 1416 | TREE_TYPE (value) = integer_type_node; |
0e5921e8 | 1417 | } |
c8a96070 | 1418 | |
0e5921e8 | 1419 | return value; |
e8bbfc4e | 1420 | } |