Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Parse expressions for GDB. |
c4a172b5 | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4 | 1998, 1999, 2000, 2001, 2004, 2005, 2007 Free Software Foundation, Inc. | |
c4a172b5 | 5 | |
c906108c SS |
6 | Modified from expread.y by the Department of Computer Science at the |
7 | State University of New York at Buffalo, 1991. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
23 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
25 | |
26 | /* Parse an expression from text in a string, | |
27 | and return the result as a struct expression pointer. | |
28 | That structure contains arithmetic operations in reverse polish, | |
29 | with constants represented by operations that are followed by special data. | |
30 | See expression.h for the details of the format. | |
31 | What is important here is that it can be built up sequentially | |
32 | during the process of parsing; the lower levels of the tree always | |
33 | come first in the result. */ | |
c5aa993b | 34 | |
cce74817 JM |
35 | #include <ctype.h> |
36 | ||
c906108c SS |
37 | #include "defs.h" |
38 | #include "gdb_string.h" | |
c906108c SS |
39 | #include "symtab.h" |
40 | #include "gdbtypes.h" | |
41 | #include "frame.h" | |
42 | #include "expression.h" | |
43 | #include "value.h" | |
44 | #include "command.h" | |
45 | #include "language.h" | |
0b4e1325 | 46 | #include "f-lang.h" |
c906108c SS |
47 | #include "parser-defs.h" |
48 | #include "gdbcmd.h" | |
c5aa993b | 49 | #include "symfile.h" /* for overlay functions */ |
f57d151a | 50 | #include "inferior.h" |
d16aafd8 | 51 | #include "doublest.h" |
0406ec40 | 52 | #include "gdb_assert.h" |
fe898f56 | 53 | #include "block.h" |
59f92a09 | 54 | #include "source.h" |
9e35dae4 | 55 | #include "objfiles.h" |
e2305d34 | 56 | |
5f9769d1 PH |
57 | /* Standard set of definitions for printing, dumping, prefixifying, |
58 | * and evaluating expressions. */ | |
59 | ||
60 | const struct exp_descriptor exp_descriptor_standard = | |
61 | { | |
62 | print_subexp_standard, | |
63 | operator_length_standard, | |
64 | op_name_standard, | |
65 | dump_subexp_body_standard, | |
66 | evaluate_subexp_standard | |
67 | }; | |
c906108c SS |
68 | \f |
69 | /* Global variables declared in parser-defs.h (and commented there). */ | |
70 | struct expression *expout; | |
71 | int expout_size; | |
72 | int expout_ptr; | |
73 | struct block *expression_context_block; | |
84f0252a | 74 | CORE_ADDR expression_context_pc; |
c906108c SS |
75 | struct block *innermost_block; |
76 | int arglist_len; | |
77 | union type_stack_elt *type_stack; | |
78 | int type_stack_depth, type_stack_size; | |
79 | char *lexptr; | |
665132f9 | 80 | char *prev_lexptr; |
c906108c SS |
81 | int paren_depth; |
82 | int comma_terminates; | |
3a913e29 JB |
83 | |
84 | /* A temporary buffer for identifiers, so we can null-terminate them. | |
85 | ||
86 | We allocate this with xrealloc. parse_exp_1 used to allocate with | |
87 | alloca, using the size of the whole expression as a conservative | |
88 | estimate of the space needed. However, macro expansion can | |
89 | introduce names longer than the original expression; there's no | |
90 | practical way to know beforehand how large that might be. */ | |
91 | char *namecopy; | |
92 | size_t namecopy_size; | |
c906108c | 93 | \f |
c906108c | 94 | static int expressiondebug = 0; |
920d2a44 AC |
95 | static void |
96 | show_expressiondebug (struct ui_file *file, int from_tty, | |
97 | struct cmd_list_element *c, const char *value) | |
98 | { | |
99 | fprintf_filtered (file, _("Expression debugging is %s.\n"), value); | |
100 | } | |
c906108c | 101 | |
74b7792f | 102 | static void free_funcalls (void *ignore); |
c906108c | 103 | |
a14ed312 | 104 | static void prefixify_expression (struct expression *); |
c906108c | 105 | |
570b8f7c AC |
106 | static void prefixify_subexp (struct expression *, struct expression *, int, |
107 | int); | |
c906108c | 108 | |
e85c3284 PH |
109 | static struct expression *parse_exp_in_context (char **, struct block *, int, |
110 | int); | |
111 | ||
a14ed312 | 112 | void _initialize_parse (void); |
392a587b | 113 | |
c906108c SS |
114 | /* Data structure for saving values of arglist_len for function calls whose |
115 | arguments contain other function calls. */ | |
116 | ||
117 | struct funcall | |
118 | { | |
119 | struct funcall *next; | |
120 | int arglist_len; | |
121 | }; | |
122 | ||
123 | static struct funcall *funcall_chain; | |
124 | ||
c906108c SS |
125 | /* Begin counting arguments for a function call, |
126 | saving the data about any containing call. */ | |
127 | ||
128 | void | |
fba45db2 | 129 | start_arglist (void) |
c906108c | 130 | { |
f86f5ca3 | 131 | struct funcall *new; |
c906108c SS |
132 | |
133 | new = (struct funcall *) xmalloc (sizeof (struct funcall)); | |
134 | new->next = funcall_chain; | |
135 | new->arglist_len = arglist_len; | |
136 | arglist_len = 0; | |
137 | funcall_chain = new; | |
138 | } | |
139 | ||
140 | /* Return the number of arguments in a function call just terminated, | |
141 | and restore the data for the containing function call. */ | |
142 | ||
143 | int | |
fba45db2 | 144 | end_arglist (void) |
c906108c | 145 | { |
f86f5ca3 PH |
146 | int val = arglist_len; |
147 | struct funcall *call = funcall_chain; | |
c906108c SS |
148 | funcall_chain = call->next; |
149 | arglist_len = call->arglist_len; | |
b8c9b27d | 150 | xfree (call); |
c906108c SS |
151 | return val; |
152 | } | |
153 | ||
154 | /* Free everything in the funcall chain. | |
155 | Used when there is an error inside parsing. */ | |
156 | ||
157 | static void | |
74b7792f | 158 | free_funcalls (void *ignore) |
c906108c | 159 | { |
f86f5ca3 | 160 | struct funcall *call, *next; |
c906108c SS |
161 | |
162 | for (call = funcall_chain; call; call = next) | |
163 | { | |
164 | next = call->next; | |
b8c9b27d | 165 | xfree (call); |
c906108c SS |
166 | } |
167 | } | |
168 | \f | |
169 | /* This page contains the functions for adding data to the struct expression | |
170 | being constructed. */ | |
171 | ||
172 | /* Add one element to the end of the expression. */ | |
173 | ||
174 | /* To avoid a bug in the Sun 4 compiler, we pass things that can fit into | |
175 | a register through here */ | |
176 | ||
177 | void | |
fba45db2 | 178 | write_exp_elt (union exp_element expelt) |
c906108c SS |
179 | { |
180 | if (expout_ptr >= expout_size) | |
181 | { | |
182 | expout_size *= 2; | |
183 | expout = (struct expression *) | |
184 | xrealloc ((char *) expout, sizeof (struct expression) | |
185 | + EXP_ELEM_TO_BYTES (expout_size)); | |
186 | } | |
187 | expout->elts[expout_ptr++] = expelt; | |
188 | } | |
189 | ||
190 | void | |
fba45db2 | 191 | write_exp_elt_opcode (enum exp_opcode expelt) |
c906108c SS |
192 | { |
193 | union exp_element tmp; | |
09153d55 | 194 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
195 | |
196 | tmp.opcode = expelt; | |
197 | ||
198 | write_exp_elt (tmp); | |
199 | } | |
200 | ||
201 | void | |
fba45db2 | 202 | write_exp_elt_sym (struct symbol *expelt) |
c906108c SS |
203 | { |
204 | union exp_element tmp; | |
09153d55 | 205 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
206 | |
207 | tmp.symbol = expelt; | |
208 | ||
209 | write_exp_elt (tmp); | |
210 | } | |
211 | ||
212 | void | |
fba45db2 | 213 | write_exp_elt_block (struct block *b) |
c906108c SS |
214 | { |
215 | union exp_element tmp; | |
09153d55 | 216 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
217 | tmp.block = b; |
218 | write_exp_elt (tmp); | |
219 | } | |
220 | ||
9e35dae4 DJ |
221 | void |
222 | write_exp_elt_objfile (struct objfile *objfile) | |
223 | { | |
224 | union exp_element tmp; | |
225 | memset (&tmp, 0, sizeof (union exp_element)); | |
226 | tmp.objfile = objfile; | |
227 | write_exp_elt (tmp); | |
228 | } | |
229 | ||
c906108c | 230 | void |
fba45db2 | 231 | write_exp_elt_longcst (LONGEST expelt) |
c906108c SS |
232 | { |
233 | union exp_element tmp; | |
09153d55 | 234 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
235 | |
236 | tmp.longconst = expelt; | |
237 | ||
238 | write_exp_elt (tmp); | |
239 | } | |
240 | ||
241 | void | |
fba45db2 | 242 | write_exp_elt_dblcst (DOUBLEST expelt) |
c906108c SS |
243 | { |
244 | union exp_element tmp; | |
09153d55 | 245 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
246 | |
247 | tmp.doubleconst = expelt; | |
248 | ||
249 | write_exp_elt (tmp); | |
250 | } | |
251 | ||
252 | void | |
fba45db2 | 253 | write_exp_elt_type (struct type *expelt) |
c906108c SS |
254 | { |
255 | union exp_element tmp; | |
09153d55 | 256 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
257 | |
258 | tmp.type = expelt; | |
259 | ||
260 | write_exp_elt (tmp); | |
261 | } | |
262 | ||
263 | void | |
fba45db2 | 264 | write_exp_elt_intern (struct internalvar *expelt) |
c906108c SS |
265 | { |
266 | union exp_element tmp; | |
09153d55 | 267 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
268 | |
269 | tmp.internalvar = expelt; | |
270 | ||
271 | write_exp_elt (tmp); | |
272 | } | |
273 | ||
274 | /* Add a string constant to the end of the expression. | |
275 | ||
276 | String constants are stored by first writing an expression element | |
277 | that contains the length of the string, then stuffing the string | |
278 | constant itself into however many expression elements are needed | |
279 | to hold it, and then writing another expression element that contains | |
280 | the length of the string. I.E. an expression element at each end of | |
281 | the string records the string length, so you can skip over the | |
282 | expression elements containing the actual string bytes from either | |
283 | end of the string. Note that this also allows gdb to handle | |
284 | strings with embedded null bytes, as is required for some languages. | |
285 | ||
286 | Don't be fooled by the fact that the string is null byte terminated, | |
287 | this is strictly for the convenience of debugging gdb itself. Gdb | |
288 | Gdb does not depend up the string being null terminated, since the | |
289 | actual length is recorded in expression elements at each end of the | |
290 | string. The null byte is taken into consideration when computing how | |
291 | many expression elements are required to hold the string constant, of | |
292 | course. */ | |
293 | ||
294 | ||
295 | void | |
fba45db2 | 296 | write_exp_string (struct stoken str) |
c906108c | 297 | { |
f86f5ca3 PH |
298 | int len = str.length; |
299 | int lenelt; | |
300 | char *strdata; | |
c906108c SS |
301 | |
302 | /* Compute the number of expression elements required to hold the string | |
303 | (including a null byte terminator), along with one expression element | |
304 | at each end to record the actual string length (not including the | |
305 | null byte terminator). */ | |
306 | ||
307 | lenelt = 2 + BYTES_TO_EXP_ELEM (len + 1); | |
308 | ||
309 | /* Ensure that we have enough available expression elements to store | |
310 | everything. */ | |
311 | ||
312 | if ((expout_ptr + lenelt) >= expout_size) | |
313 | { | |
314 | expout_size = max (expout_size * 2, expout_ptr + lenelt + 10); | |
315 | expout = (struct expression *) | |
316 | xrealloc ((char *) expout, (sizeof (struct expression) | |
317 | + EXP_ELEM_TO_BYTES (expout_size))); | |
318 | } | |
319 | ||
320 | /* Write the leading length expression element (which advances the current | |
321 | expression element index), then write the string constant followed by a | |
322 | terminating null byte, and then write the trailing length expression | |
323 | element. */ | |
324 | ||
325 | write_exp_elt_longcst ((LONGEST) len); | |
326 | strdata = (char *) &expout->elts[expout_ptr]; | |
327 | memcpy (strdata, str.ptr, len); | |
328 | *(strdata + len) = '\0'; | |
329 | expout_ptr += lenelt - 2; | |
330 | write_exp_elt_longcst ((LONGEST) len); | |
331 | } | |
332 | ||
333 | /* Add a bitstring constant to the end of the expression. | |
334 | ||
335 | Bitstring constants are stored by first writing an expression element | |
336 | that contains the length of the bitstring (in bits), then stuffing the | |
337 | bitstring constant itself into however many expression elements are | |
338 | needed to hold it, and then writing another expression element that | |
339 | contains the length of the bitstring. I.E. an expression element at | |
340 | each end of the bitstring records the bitstring length, so you can skip | |
341 | over the expression elements containing the actual bitstring bytes from | |
342 | either end of the bitstring. */ | |
343 | ||
344 | void | |
fba45db2 | 345 | write_exp_bitstring (struct stoken str) |
c906108c | 346 | { |
f86f5ca3 PH |
347 | int bits = str.length; /* length in bits */ |
348 | int len = (bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
349 | int lenelt; | |
350 | char *strdata; | |
c906108c SS |
351 | |
352 | /* Compute the number of expression elements required to hold the bitstring, | |
353 | along with one expression element at each end to record the actual | |
354 | bitstring length in bits. */ | |
355 | ||
356 | lenelt = 2 + BYTES_TO_EXP_ELEM (len); | |
357 | ||
358 | /* Ensure that we have enough available expression elements to store | |
359 | everything. */ | |
360 | ||
361 | if ((expout_ptr + lenelt) >= expout_size) | |
362 | { | |
363 | expout_size = max (expout_size * 2, expout_ptr + lenelt + 10); | |
364 | expout = (struct expression *) | |
365 | xrealloc ((char *) expout, (sizeof (struct expression) | |
366 | + EXP_ELEM_TO_BYTES (expout_size))); | |
367 | } | |
368 | ||
369 | /* Write the leading length expression element (which advances the current | |
370 | expression element index), then write the bitstring constant, and then | |
371 | write the trailing length expression element. */ | |
372 | ||
373 | write_exp_elt_longcst ((LONGEST) bits); | |
374 | strdata = (char *) &expout->elts[expout_ptr]; | |
375 | memcpy (strdata, str.ptr, len); | |
376 | expout_ptr += lenelt - 2; | |
377 | write_exp_elt_longcst ((LONGEST) bits); | |
378 | } | |
379 | ||
380 | /* Add the appropriate elements for a minimal symbol to the end of | |
381 | the expression. The rationale behind passing in text_symbol_type and | |
382 | data_symbol_type was so that Modula-2 could pass in WORD for | |
383 | data_symbol_type. Perhaps it still is useful to have those types vary | |
384 | based on the language, but they no longer have names like "int", so | |
385 | the initial rationale is gone. */ | |
386 | ||
387 | static struct type *msym_text_symbol_type; | |
388 | static struct type *msym_data_symbol_type; | |
389 | static struct type *msym_unknown_symbol_type; | |
9e35dae4 | 390 | static struct type *msym_tls_symbol_type; |
c906108c SS |
391 | |
392 | void | |
a858089e MS |
393 | write_exp_msymbol (struct minimal_symbol *msymbol, |
394 | struct type *text_symbol_type, | |
395 | struct type *data_symbol_type) | |
c906108c SS |
396 | { |
397 | CORE_ADDR addr; | |
398 | ||
399 | write_exp_elt_opcode (OP_LONG); | |
a858089e MS |
400 | /* Let's make the type big enough to hold a 64-bit address. */ |
401 | write_exp_elt_type (builtin_type_CORE_ADDR); | |
c906108c SS |
402 | |
403 | addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
404 | if (overlay_debugging) | |
405 | addr = symbol_overlayed_address (addr, SYMBOL_BFD_SECTION (msymbol)); | |
406 | write_exp_elt_longcst ((LONGEST) addr); | |
c5aa993b | 407 | |
c906108c SS |
408 | write_exp_elt_opcode (OP_LONG); |
409 | ||
aef9c3b3 DJ |
410 | if (SYMBOL_BFD_SECTION (msymbol) |
411 | && SYMBOL_BFD_SECTION (msymbol)->flags & SEC_THREAD_LOCAL) | |
9e35dae4 DJ |
412 | { |
413 | bfd *bfd = SYMBOL_BFD_SECTION (msymbol)->owner; | |
414 | struct objfile *ofp; | |
415 | ||
416 | ALL_OBJFILES (ofp) | |
417 | if (ofp->obfd == bfd) | |
418 | break; | |
419 | ||
420 | write_exp_elt_opcode (UNOP_MEMVAL_TLS); | |
421 | write_exp_elt_objfile (ofp); | |
422 | write_exp_elt_type (msym_tls_symbol_type); | |
423 | write_exp_elt_opcode (UNOP_MEMVAL_TLS); | |
424 | return; | |
425 | } | |
426 | ||
c906108c | 427 | write_exp_elt_opcode (UNOP_MEMVAL); |
c5aa993b | 428 | switch (msymbol->type) |
c906108c SS |
429 | { |
430 | case mst_text: | |
431 | case mst_file_text: | |
432 | case mst_solib_trampoline: | |
433 | write_exp_elt_type (msym_text_symbol_type); | |
434 | break; | |
435 | ||
436 | case mst_data: | |
437 | case mst_file_data: | |
438 | case mst_bss: | |
439 | case mst_file_bss: | |
440 | write_exp_elt_type (msym_data_symbol_type); | |
441 | break; | |
442 | ||
443 | default: | |
444 | write_exp_elt_type (msym_unknown_symbol_type); | |
445 | break; | |
446 | } | |
447 | write_exp_elt_opcode (UNOP_MEMVAL); | |
448 | } | |
449 | \f | |
450 | /* Recognize tokens that start with '$'. These include: | |
451 | ||
c5aa993b JM |
452 | $regname A native register name or a "standard |
453 | register name". | |
c906108c | 454 | |
c5aa993b JM |
455 | $variable A convenience variable with a name chosen |
456 | by the user. | |
c906108c | 457 | |
c5aa993b JM |
458 | $digits Value history with index <digits>, starting |
459 | from the first value which has index 1. | |
c906108c | 460 | |
c5aa993b JM |
461 | $$digits Value history with index <digits> relative |
462 | to the last value. I.E. $$0 is the last | |
463 | value, $$1 is the one previous to that, $$2 | |
464 | is the one previous to $$1, etc. | |
c906108c | 465 | |
c5aa993b | 466 | $ | $0 | $$0 The last value in the value history. |
c906108c | 467 | |
c5aa993b JM |
468 | $$ An abbreviation for the second to the last |
469 | value in the value history, I.E. $$1 | |
c906108c | 470 | |
c5aa993b | 471 | */ |
c906108c SS |
472 | |
473 | void | |
fba45db2 | 474 | write_dollar_variable (struct stoken str) |
c906108c | 475 | { |
d7318818 RC |
476 | struct symbol *sym = NULL; |
477 | struct minimal_symbol *msym = NULL; | |
478 | ||
c906108c SS |
479 | /* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1) |
480 | and $$digits (equivalent to $<-digits> if you could type that). */ | |
481 | ||
c906108c SS |
482 | int negate = 0; |
483 | int i = 1; | |
484 | /* Double dollar means negate the number and add -1 as well. | |
485 | Thus $$ alone means -1. */ | |
486 | if (str.length >= 2 && str.ptr[1] == '$') | |
487 | { | |
488 | negate = 1; | |
489 | i = 2; | |
490 | } | |
491 | if (i == str.length) | |
492 | { | |
493 | /* Just dollars (one or two) */ | |
c5aa993b | 494 | i = -negate; |
c906108c SS |
495 | goto handle_last; |
496 | } | |
497 | /* Is the rest of the token digits? */ | |
498 | for (; i < str.length; i++) | |
499 | if (!(str.ptr[i] >= '0' && str.ptr[i] <= '9')) | |
500 | break; | |
501 | if (i == str.length) | |
502 | { | |
503 | i = atoi (str.ptr + 1 + negate); | |
504 | if (negate) | |
c5aa993b | 505 | i = -i; |
c906108c SS |
506 | goto handle_last; |
507 | } | |
c5aa993b | 508 | |
c906108c SS |
509 | /* Handle tokens that refer to machine registers: |
510 | $ followed by a register name. */ | |
206415a3 | 511 | i = frame_map_name_to_regnum (deprecated_safe_get_selected_frame (), |
eb8bc282 | 512 | str.ptr + 1, str.length - 1); |
c5aa993b | 513 | if (i >= 0) |
c906108c SS |
514 | goto handle_register; |
515 | ||
d7318818 RC |
516 | /* On some systems, such as HP-UX and hppa-linux, certain system routines |
517 | have names beginning with $ or $$. Check for those, first. */ | |
518 | ||
519 | sym = lookup_symbol (copy_name (str), (struct block *) NULL, | |
520 | VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL); | |
521 | if (sym) | |
522 | { | |
523 | write_exp_elt_opcode (OP_VAR_VALUE); | |
524 | write_exp_elt_block (block_found); /* set by lookup_symbol */ | |
525 | write_exp_elt_sym (sym); | |
526 | write_exp_elt_opcode (OP_VAR_VALUE); | |
527 | return; | |
528 | } | |
529 | msym = lookup_minimal_symbol (copy_name (str), NULL, NULL); | |
530 | if (msym) | |
c906108c | 531 | { |
d7318818 RC |
532 | write_exp_msymbol (msym, |
533 | lookup_function_type (builtin_type_int), | |
534 | builtin_type_int); | |
535 | return; | |
c906108c | 536 | } |
c5aa993b | 537 | |
c906108c SS |
538 | /* Any other names starting in $ are debugger internal variables. */ |
539 | ||
540 | write_exp_elt_opcode (OP_INTERNALVAR); | |
541 | write_exp_elt_intern (lookup_internalvar (copy_name (str) + 1)); | |
c5aa993b | 542 | write_exp_elt_opcode (OP_INTERNALVAR); |
c906108c | 543 | return; |
c5aa993b | 544 | handle_last: |
c906108c SS |
545 | write_exp_elt_opcode (OP_LAST); |
546 | write_exp_elt_longcst ((LONGEST) i); | |
547 | write_exp_elt_opcode (OP_LAST); | |
548 | return; | |
c5aa993b | 549 | handle_register: |
c906108c SS |
550 | write_exp_elt_opcode (OP_REGISTER); |
551 | write_exp_elt_longcst (i); | |
c5aa993b | 552 | write_exp_elt_opcode (OP_REGISTER); |
c906108c SS |
553 | return; |
554 | } | |
555 | ||
556 | ||
c906108c | 557 | char * |
fba45db2 | 558 | find_template_name_end (char *p) |
c906108c SS |
559 | { |
560 | int depth = 1; | |
561 | int just_seen_right = 0; | |
562 | int just_seen_colon = 0; | |
563 | int just_seen_space = 0; | |
c5aa993b | 564 | |
c906108c SS |
565 | if (!p || (*p != '<')) |
566 | return 0; | |
567 | ||
568 | while (*++p) | |
569 | { | |
570 | switch (*p) | |
c5aa993b JM |
571 | { |
572 | case '\'': | |
573 | case '\"': | |
574 | case '{': | |
575 | case '}': | |
576 | /* In future, may want to allow these?? */ | |
577 | return 0; | |
578 | case '<': | |
579 | depth++; /* start nested template */ | |
580 | if (just_seen_colon || just_seen_right || just_seen_space) | |
581 | return 0; /* but not after : or :: or > or space */ | |
582 | break; | |
583 | case '>': | |
584 | if (just_seen_colon || just_seen_right) | |
585 | return 0; /* end a (nested?) template */ | |
586 | just_seen_right = 1; /* but not after : or :: */ | |
587 | if (--depth == 0) /* also disallow >>, insist on > > */ | |
588 | return ++p; /* if outermost ended, return */ | |
589 | break; | |
590 | case ':': | |
591 | if (just_seen_space || (just_seen_colon > 1)) | |
592 | return 0; /* nested class spec coming up */ | |
593 | just_seen_colon++; /* we allow :: but not :::: */ | |
594 | break; | |
595 | case ' ': | |
596 | break; | |
597 | default: | |
598 | if (!((*p >= 'a' && *p <= 'z') || /* allow token chars */ | |
599 | (*p >= 'A' && *p <= 'Z') || | |
600 | (*p >= '0' && *p <= '9') || | |
601 | (*p == '_') || (*p == ',') || /* commas for template args */ | |
602 | (*p == '&') || (*p == '*') || /* pointer and ref types */ | |
603 | (*p == '(') || (*p == ')') || /* function types */ | |
604 | (*p == '[') || (*p == ']'))) /* array types */ | |
605 | return 0; | |
606 | } | |
c906108c | 607 | if (*p != ' ') |
c5aa993b | 608 | just_seen_space = 0; |
c906108c | 609 | if (*p != ':') |
c5aa993b | 610 | just_seen_colon = 0; |
c906108c | 611 | if (*p != '>') |
c5aa993b | 612 | just_seen_right = 0; |
c906108c SS |
613 | } |
614 | return 0; | |
615 | } | |
c5aa993b | 616 | \f |
c906108c SS |
617 | |
618 | ||
c906108c SS |
619 | /* Return a null-terminated temporary copy of the name |
620 | of a string token. */ | |
621 | ||
622 | char * | |
fba45db2 | 623 | copy_name (struct stoken token) |
c906108c | 624 | { |
3a913e29 JB |
625 | /* Make sure there's enough space for the token. */ |
626 | if (namecopy_size < token.length + 1) | |
627 | { | |
628 | namecopy_size = token.length + 1; | |
629 | namecopy = xrealloc (namecopy, token.length + 1); | |
630 | } | |
631 | ||
c906108c SS |
632 | memcpy (namecopy, token.ptr, token.length); |
633 | namecopy[token.length] = 0; | |
3a913e29 | 634 | |
c906108c SS |
635 | return namecopy; |
636 | } | |
637 | \f | |
638 | /* Reverse an expression from suffix form (in which it is constructed) | |
639 | to prefix form (in which we can conveniently print or execute it). */ | |
640 | ||
641 | static void | |
f86f5ca3 | 642 | prefixify_expression (struct expression *expr) |
c906108c | 643 | { |
f86f5ca3 | 644 | int len = |
c5aa993b | 645 | sizeof (struct expression) + EXP_ELEM_TO_BYTES (expr->nelts); |
f86f5ca3 PH |
646 | struct expression *temp; |
647 | int inpos = expr->nelts, outpos = 0; | |
c906108c SS |
648 | |
649 | temp = (struct expression *) alloca (len); | |
650 | ||
651 | /* Copy the original expression into temp. */ | |
652 | memcpy (temp, expr, len); | |
653 | ||
654 | prefixify_subexp (temp, expr, inpos, outpos); | |
655 | } | |
656 | ||
24daaebc PH |
657 | /* Return the number of exp_elements in the postfix subexpression |
658 | of EXPR whose operator is at index ENDPOS - 1 in EXPR. */ | |
c906108c SS |
659 | |
660 | int | |
f86f5ca3 | 661 | length_of_subexp (struct expression *expr, int endpos) |
24daaebc PH |
662 | { |
663 | int oplen, args, i; | |
664 | ||
665 | operator_length (expr, endpos, &oplen, &args); | |
666 | ||
667 | while (args > 0) | |
668 | { | |
669 | oplen += length_of_subexp (expr, endpos - oplen); | |
670 | args--; | |
671 | } | |
672 | ||
673 | return oplen; | |
674 | } | |
675 | ||
676 | /* Sets *OPLENP to the length of the operator whose (last) index is | |
677 | ENDPOS - 1 in EXPR, and sets *ARGSP to the number of arguments that | |
678 | operator takes. */ | |
679 | ||
680 | void | |
681 | operator_length (struct expression *expr, int endpos, int *oplenp, int *argsp) | |
5f9769d1 PH |
682 | { |
683 | expr->language_defn->la_exp_desc->operator_length (expr, endpos, | |
684 | oplenp, argsp); | |
685 | } | |
686 | ||
687 | /* Default value for operator_length in exp_descriptor vectors. */ | |
688 | ||
689 | void | |
690 | operator_length_standard (struct expression *expr, int endpos, | |
691 | int *oplenp, int *argsp) | |
c906108c | 692 | { |
f86f5ca3 PH |
693 | int oplen = 1; |
694 | int args = 0; | |
0b4e1325 | 695 | enum f90_range_type range_type; |
f86f5ca3 | 696 | int i; |
c906108c SS |
697 | |
698 | if (endpos < 1) | |
8a3fe4f8 | 699 | error (_("?error in operator_length_standard")); |
c906108c SS |
700 | |
701 | i = (int) expr->elts[endpos - 1].opcode; | |
702 | ||
703 | switch (i) | |
704 | { | |
705 | /* C++ */ | |
706 | case OP_SCOPE: | |
707 | oplen = longest_to_int (expr->elts[endpos - 2].longconst); | |
708 | oplen = 5 + BYTES_TO_EXP_ELEM (oplen + 1); | |
709 | break; | |
710 | ||
711 | case OP_LONG: | |
712 | case OP_DOUBLE: | |
713 | case OP_VAR_VALUE: | |
714 | oplen = 4; | |
715 | break; | |
716 | ||
717 | case OP_TYPE: | |
718 | case OP_BOOL: | |
719 | case OP_LAST: | |
720 | case OP_REGISTER: | |
721 | case OP_INTERNALVAR: | |
722 | oplen = 3; | |
723 | break; | |
724 | ||
725 | case OP_COMPLEX: | |
c5aa993b | 726 | oplen = 1; |
c906108c | 727 | args = 2; |
c5aa993b | 728 | break; |
c906108c SS |
729 | |
730 | case OP_FUNCALL: | |
731 | case OP_F77_UNDETERMINED_ARGLIST: | |
732 | oplen = 3; | |
733 | args = 1 + longest_to_int (expr->elts[endpos - 2].longconst); | |
734 | break; | |
735 | ||
646df18d | 736 | case OP_OBJC_MSGCALL: /* Objective C message (method) call */ |
53c551b7 AF |
737 | oplen = 4; |
738 | args = 1 + longest_to_int (expr->elts[endpos - 2].longconst); | |
739 | break; | |
740 | ||
c906108c SS |
741 | case UNOP_MAX: |
742 | case UNOP_MIN: | |
743 | oplen = 3; | |
744 | break; | |
745 | ||
c5aa993b JM |
746 | case BINOP_VAL: |
747 | case UNOP_CAST: | |
748 | case UNOP_MEMVAL: | |
c906108c SS |
749 | oplen = 3; |
750 | args = 1; | |
751 | break; | |
752 | ||
9e35dae4 DJ |
753 | case UNOP_MEMVAL_TLS: |
754 | oplen = 4; | |
755 | args = 1; | |
756 | break; | |
757 | ||
c906108c SS |
758 | case UNOP_ABS: |
759 | case UNOP_CAP: | |
760 | case UNOP_CHR: | |
761 | case UNOP_FLOAT: | |
762 | case UNOP_HIGH: | |
763 | case UNOP_ODD: | |
764 | case UNOP_ORD: | |
765 | case UNOP_TRUNC: | |
766 | oplen = 1; | |
767 | args = 1; | |
768 | break; | |
769 | ||
770 | case OP_LABELED: | |
771 | case STRUCTOP_STRUCT: | |
772 | case STRUCTOP_PTR: | |
773 | args = 1; | |
774 | /* fall through */ | |
775 | case OP_M2_STRING: | |
776 | case OP_STRING: | |
646df18d AF |
777 | case OP_OBJC_NSSTRING: /* Objective C Foundation Class NSString constant */ |
778 | case OP_OBJC_SELECTOR: /* Objective C "@selector" pseudo-op */ | |
c906108c | 779 | case OP_NAME: |
c906108c SS |
780 | oplen = longest_to_int (expr->elts[endpos - 2].longconst); |
781 | oplen = 4 + BYTES_TO_EXP_ELEM (oplen + 1); | |
782 | break; | |
783 | ||
784 | case OP_BITSTRING: | |
785 | oplen = longest_to_int (expr->elts[endpos - 2].longconst); | |
786 | oplen = (oplen + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
787 | oplen = 4 + BYTES_TO_EXP_ELEM (oplen); | |
788 | break; | |
789 | ||
790 | case OP_ARRAY: | |
791 | oplen = 4; | |
792 | args = longest_to_int (expr->elts[endpos - 2].longconst); | |
793 | args -= longest_to_int (expr->elts[endpos - 3].longconst); | |
794 | args += 1; | |
795 | break; | |
796 | ||
797 | case TERNOP_COND: | |
798 | case TERNOP_SLICE: | |
799 | case TERNOP_SLICE_COUNT: | |
800 | args = 3; | |
801 | break; | |
802 | ||
803 | /* Modula-2 */ | |
c5aa993b | 804 | case MULTI_SUBSCRIPT: |
c906108c | 805 | oplen = 3; |
c5aa993b | 806 | args = 1 + longest_to_int (expr->elts[endpos - 2].longconst); |
c906108c SS |
807 | break; |
808 | ||
809 | case BINOP_ASSIGN_MODIFY: | |
810 | oplen = 3; | |
811 | args = 2; | |
812 | break; | |
813 | ||
814 | /* C++ */ | |
815 | case OP_THIS: | |
646df18d | 816 | case OP_OBJC_SELF: |
c906108c SS |
817 | oplen = 2; |
818 | break; | |
819 | ||
0b4e1325 WZ |
820 | case OP_F90_RANGE: |
821 | oplen = 3; | |
822 | ||
823 | range_type = longest_to_int (expr->elts[endpos - 2].longconst); | |
824 | switch (range_type) | |
825 | { | |
826 | case LOW_BOUND_DEFAULT: | |
827 | case HIGH_BOUND_DEFAULT: | |
828 | args = 1; | |
829 | break; | |
830 | case BOTH_BOUND_DEFAULT: | |
831 | args = 0; | |
832 | break; | |
833 | case NONE_BOUND_DEFAULT: | |
834 | args = 2; | |
835 | break; | |
836 | } | |
837 | ||
838 | break; | |
839 | ||
c906108c SS |
840 | default: |
841 | args = 1 + (i < (int) BINOP_END); | |
842 | } | |
843 | ||
24daaebc PH |
844 | *oplenp = oplen; |
845 | *argsp = args; | |
c906108c SS |
846 | } |
847 | ||
848 | /* Copy the subexpression ending just before index INEND in INEXPR | |
849 | into OUTEXPR, starting at index OUTBEG. | |
850 | In the process, convert it from suffix to prefix form. */ | |
851 | ||
852 | static void | |
f86f5ca3 PH |
853 | prefixify_subexp (struct expression *inexpr, |
854 | struct expression *outexpr, int inend, int outbeg) | |
c906108c | 855 | { |
24daaebc PH |
856 | int oplen; |
857 | int args; | |
f86f5ca3 | 858 | int i; |
c906108c SS |
859 | int *arglens; |
860 | enum exp_opcode opcode; | |
861 | ||
24daaebc | 862 | operator_length (inexpr, inend, &oplen, &args); |
c906108c SS |
863 | |
864 | /* Copy the final operator itself, from the end of the input | |
865 | to the beginning of the output. */ | |
866 | inend -= oplen; | |
867 | memcpy (&outexpr->elts[outbeg], &inexpr->elts[inend], | |
868 | EXP_ELEM_TO_BYTES (oplen)); | |
869 | outbeg += oplen; | |
870 | ||
871 | /* Find the lengths of the arg subexpressions. */ | |
872 | arglens = (int *) alloca (args * sizeof (int)); | |
873 | for (i = args - 1; i >= 0; i--) | |
874 | { | |
875 | oplen = length_of_subexp (inexpr, inend); | |
876 | arglens[i] = oplen; | |
877 | inend -= oplen; | |
878 | } | |
879 | ||
880 | /* Now copy each subexpression, preserving the order of | |
881 | the subexpressions, but prefixifying each one. | |
882 | In this loop, inend starts at the beginning of | |
883 | the expression this level is working on | |
884 | and marches forward over the arguments. | |
885 | outbeg does similarly in the output. */ | |
886 | for (i = 0; i < args; i++) | |
887 | { | |
888 | oplen = arglens[i]; | |
889 | inend += oplen; | |
890 | prefixify_subexp (inexpr, outexpr, inend, outbeg); | |
891 | outbeg += oplen; | |
892 | } | |
893 | } | |
894 | \f | |
895 | /* This page contains the two entry points to this file. */ | |
896 | ||
897 | /* Read an expression from the string *STRINGPTR points to, | |
898 | parse it, and return a pointer to a struct expression that we malloc. | |
899 | Use block BLOCK as the lexical context for variable names; | |
900 | if BLOCK is zero, use the block of the selected stack frame. | |
901 | Meanwhile, advance *STRINGPTR to point after the expression, | |
902 | at the first nonwhite character that is not part of the expression | |
903 | (possibly a null character). | |
904 | ||
905 | If COMMA is nonzero, stop if a comma is reached. */ | |
906 | ||
907 | struct expression * | |
fba45db2 | 908 | parse_exp_1 (char **stringptr, struct block *block, int comma) |
e85c3284 PH |
909 | { |
910 | return parse_exp_in_context (stringptr, block, comma, 0); | |
911 | } | |
912 | ||
913 | /* As for parse_exp_1, except that if VOID_CONTEXT_P, then | |
914 | no value is expected from the expression. */ | |
915 | ||
916 | static struct expression * | |
917 | parse_exp_in_context (char **stringptr, struct block *block, int comma, | |
918 | int void_context_p) | |
c906108c SS |
919 | { |
920 | struct cleanup *old_chain; | |
921 | ||
922 | lexptr = *stringptr; | |
665132f9 | 923 | prev_lexptr = NULL; |
c906108c SS |
924 | |
925 | paren_depth = 0; | |
926 | type_stack_depth = 0; | |
927 | ||
928 | comma_terminates = comma; | |
929 | ||
930 | if (lexptr == 0 || *lexptr == 0) | |
e2e0b3e5 | 931 | error_no_arg (_("expression to compute")); |
c906108c | 932 | |
74b7792f | 933 | old_chain = make_cleanup (free_funcalls, 0 /*ignore*/); |
c906108c SS |
934 | funcall_chain = 0; |
935 | ||
59f92a09 FF |
936 | /* If no context specified, try using the current frame, if any. */ |
937 | ||
938 | if (!block) | |
939 | block = get_selected_block (&expression_context_pc); | |
940 | ||
941 | /* Fall back to using the current source static context, if any. */ | |
942 | ||
943 | if (!block) | |
944 | { | |
945 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); | |
946 | if (cursal.symtab) | |
947 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (cursal.symtab), STATIC_BLOCK); | |
948 | } | |
949 | ||
950 | /* Save the context, if specified by caller, or found above. */ | |
951 | ||
84f0252a JB |
952 | if (block) |
953 | { | |
954 | expression_context_block = block; | |
8da065d5 | 955 | expression_context_pc = BLOCK_START (block); |
84f0252a | 956 | } |
c906108c | 957 | |
c906108c SS |
958 | expout_size = 10; |
959 | expout_ptr = 0; | |
960 | expout = (struct expression *) | |
961 | xmalloc (sizeof (struct expression) + EXP_ELEM_TO_BYTES (expout_size)); | |
962 | expout->language_defn = current_language; | |
c13c43fd | 963 | make_cleanup (free_current_contents, &expout); |
c906108c SS |
964 | |
965 | if (current_language->la_parser ()) | |
966 | current_language->la_error (NULL); | |
967 | ||
968 | discard_cleanups (old_chain); | |
969 | ||
970 | /* Record the actual number of expression elements, and then | |
971 | reallocate the expression memory so that we free up any | |
972 | excess elements. */ | |
973 | ||
974 | expout->nelts = expout_ptr; | |
975 | expout = (struct expression *) | |
976 | xrealloc ((char *) expout, | |
977 | sizeof (struct expression) + EXP_ELEM_TO_BYTES (expout_ptr));; | |
978 | ||
979 | /* Convert expression from postfix form as generated by yacc | |
980 | parser, to a prefix form. */ | |
981 | ||
c906108c | 982 | if (expressiondebug) |
24daaebc PH |
983 | dump_raw_expression (expout, gdb_stdlog, |
984 | "before conversion to prefix form"); | |
c906108c SS |
985 | |
986 | prefixify_expression (expout); | |
987 | ||
e85c3284 PH |
988 | current_language->la_post_parser (&expout, void_context_p); |
989 | ||
c906108c | 990 | if (expressiondebug) |
24daaebc | 991 | dump_prefix_expression (expout, gdb_stdlog); |
c906108c SS |
992 | |
993 | *stringptr = lexptr; | |
994 | return expout; | |
995 | } | |
996 | ||
997 | /* Parse STRING as an expression, and complain if this fails | |
998 | to use up all of the contents of STRING. */ | |
999 | ||
1000 | struct expression * | |
fba45db2 | 1001 | parse_expression (char *string) |
c906108c | 1002 | { |
f86f5ca3 | 1003 | struct expression *exp; |
c906108c SS |
1004 | exp = parse_exp_1 (&string, 0, 0); |
1005 | if (*string) | |
8a3fe4f8 | 1006 | error (_("Junk after end of expression.")); |
c906108c SS |
1007 | return exp; |
1008 | } | |
e85c3284 PH |
1009 | |
1010 | ||
1011 | /* As for parse_expression, except that if VOID_CONTEXT_P, then | |
1012 | no value is expected from the expression. */ | |
1013 | ||
1014 | struct expression * | |
1015 | parse_expression_in_context (char *string, int void_context_p) | |
1016 | { | |
1017 | struct expression *exp; | |
1018 | exp = parse_exp_in_context (&string, 0, 0, void_context_p); | |
1019 | if (*string != '\000') | |
8a3fe4f8 | 1020 | error (_("Junk after end of expression.")); |
e85c3284 PH |
1021 | return exp; |
1022 | } | |
1023 | ||
1024 | /* A post-parser that does nothing */ | |
1025 | ||
e85c3284 PH |
1026 | void |
1027 | null_post_parser (struct expression **exp, int void_context_p) | |
1028 | { | |
1029 | } | |
c906108c SS |
1030 | \f |
1031 | /* Stuff for maintaining a stack of types. Currently just used by C, but | |
1032 | probably useful for any language which declares its types "backwards". */ | |
1033 | ||
47663de5 MS |
1034 | static void |
1035 | check_type_stack_depth (void) | |
c906108c SS |
1036 | { |
1037 | if (type_stack_depth == type_stack_size) | |
1038 | { | |
1039 | type_stack_size *= 2; | |
1040 | type_stack = (union type_stack_elt *) | |
1041 | xrealloc ((char *) type_stack, type_stack_size * sizeof (*type_stack)); | |
1042 | } | |
47663de5 MS |
1043 | } |
1044 | ||
1045 | void | |
1046 | push_type (enum type_pieces tp) | |
1047 | { | |
1048 | check_type_stack_depth (); | |
c906108c SS |
1049 | type_stack[type_stack_depth++].piece = tp; |
1050 | } | |
1051 | ||
1052 | void | |
fba45db2 | 1053 | push_type_int (int n) |
c906108c | 1054 | { |
47663de5 | 1055 | check_type_stack_depth (); |
c906108c SS |
1056 | type_stack[type_stack_depth++].int_val = n; |
1057 | } | |
1058 | ||
47663de5 MS |
1059 | void |
1060 | push_type_address_space (char *string) | |
1061 | { | |
1062 | push_type_int (address_space_name_to_int (string)); | |
1063 | } | |
1064 | ||
c5aa993b | 1065 | enum type_pieces |
fba45db2 | 1066 | pop_type (void) |
c906108c SS |
1067 | { |
1068 | if (type_stack_depth) | |
1069 | return type_stack[--type_stack_depth].piece; | |
1070 | return tp_end; | |
1071 | } | |
1072 | ||
1073 | int | |
fba45db2 | 1074 | pop_type_int (void) |
c906108c SS |
1075 | { |
1076 | if (type_stack_depth) | |
1077 | return type_stack[--type_stack_depth].int_val; | |
1078 | /* "Can't happen". */ | |
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | /* Pop the type stack and return the type which corresponds to FOLLOW_TYPE | |
1083 | as modified by all the stuff on the stack. */ | |
1084 | struct type * | |
fba45db2 | 1085 | follow_types (struct type *follow_type) |
c906108c SS |
1086 | { |
1087 | int done = 0; | |
2e2394a0 MS |
1088 | int make_const = 0; |
1089 | int make_volatile = 0; | |
47663de5 | 1090 | int make_addr_space = 0; |
c906108c SS |
1091 | int array_size; |
1092 | struct type *range_type; | |
1093 | ||
1094 | while (!done) | |
1095 | switch (pop_type ()) | |
1096 | { | |
1097 | case tp_end: | |
1098 | done = 1; | |
2e2394a0 MS |
1099 | if (make_const) |
1100 | follow_type = make_cv_type (make_const, | |
1101 | TYPE_VOLATILE (follow_type), | |
1102 | follow_type, 0); | |
1103 | if (make_volatile) | |
1104 | follow_type = make_cv_type (TYPE_CONST (follow_type), | |
1105 | make_volatile, | |
1106 | follow_type, 0); | |
47663de5 MS |
1107 | if (make_addr_space) |
1108 | follow_type = make_type_with_address_space (follow_type, | |
1109 | make_addr_space); | |
1110 | make_const = make_volatile = 0; | |
1111 | make_addr_space = 0; | |
2e2394a0 MS |
1112 | break; |
1113 | case tp_const: | |
1114 | make_const = 1; | |
1115 | break; | |
1116 | case tp_volatile: | |
1117 | make_volatile = 1; | |
c906108c | 1118 | break; |
47663de5 MS |
1119 | case tp_space_identifier: |
1120 | make_addr_space = pop_type_int (); | |
1121 | break; | |
c906108c SS |
1122 | case tp_pointer: |
1123 | follow_type = lookup_pointer_type (follow_type); | |
2e2394a0 MS |
1124 | if (make_const) |
1125 | follow_type = make_cv_type (make_const, | |
1126 | TYPE_VOLATILE (follow_type), | |
1127 | follow_type, 0); | |
1128 | if (make_volatile) | |
1129 | follow_type = make_cv_type (TYPE_CONST (follow_type), | |
1130 | make_volatile, | |
1131 | follow_type, 0); | |
47663de5 MS |
1132 | if (make_addr_space) |
1133 | follow_type = make_type_with_address_space (follow_type, | |
1134 | make_addr_space); | |
2e2394a0 | 1135 | make_const = make_volatile = 0; |
47663de5 | 1136 | make_addr_space = 0; |
c906108c SS |
1137 | break; |
1138 | case tp_reference: | |
1139 | follow_type = lookup_reference_type (follow_type); | |
2e2394a0 | 1140 | if (make_const) |
47663de5 MS |
1141 | follow_type = make_cv_type (make_const, |
1142 | TYPE_VOLATILE (follow_type), | |
1143 | follow_type, 0); | |
2e2394a0 | 1144 | if (make_volatile) |
47663de5 MS |
1145 | follow_type = make_cv_type (TYPE_CONST (follow_type), |
1146 | make_volatile, | |
1147 | follow_type, 0); | |
1148 | if (make_addr_space) | |
1149 | follow_type = make_type_with_address_space (follow_type, | |
1150 | make_addr_space); | |
2e2394a0 | 1151 | make_const = make_volatile = 0; |
47663de5 | 1152 | make_addr_space = 0; |
c906108c SS |
1153 | break; |
1154 | case tp_array: | |
1155 | array_size = pop_type_int (); | |
1156 | /* FIXME-type-allocation: need a way to free this type when we are | |
1157 | done with it. */ | |
1158 | range_type = | |
1159 | create_range_type ((struct type *) NULL, | |
1160 | builtin_type_int, 0, | |
1161 | array_size >= 0 ? array_size - 1 : 0); | |
1162 | follow_type = | |
1163 | create_array_type ((struct type *) NULL, | |
1164 | follow_type, range_type); | |
1165 | if (array_size < 0) | |
c5aa993b | 1166 | TYPE_ARRAY_UPPER_BOUND_TYPE (follow_type) |
c906108c SS |
1167 | = BOUND_CANNOT_BE_DETERMINED; |
1168 | break; | |
1169 | case tp_function: | |
1170 | /* FIXME-type-allocation: need a way to free this type when we are | |
1171 | done with it. */ | |
1172 | follow_type = lookup_function_type (follow_type); | |
1173 | break; | |
1174 | } | |
1175 | return follow_type; | |
1176 | } | |
1177 | \f | |
a14ed312 | 1178 | static void build_parse (void); |
ac9a91a7 | 1179 | static void |
fba45db2 | 1180 | build_parse (void) |
c906108c | 1181 | { |
cce74817 JM |
1182 | int i; |
1183 | ||
c906108c SS |
1184 | msym_text_symbol_type = |
1185 | init_type (TYPE_CODE_FUNC, 1, 0, "<text variable, no debug info>", NULL); | |
1186 | TYPE_TARGET_TYPE (msym_text_symbol_type) = builtin_type_int; | |
1187 | msym_data_symbol_type = | |
1188 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
1189 | "<data variable, no debug info>", NULL); | |
1190 | msym_unknown_symbol_type = | |
1191 | init_type (TYPE_CODE_INT, 1, 0, | |
1192 | "<variable (not text or data), no debug info>", | |
1193 | NULL); | |
9e35dae4 DJ |
1194 | |
1195 | msym_tls_symbol_type = | |
1196 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
1197 | "<thread local variable, no debug info>", NULL); | |
ac9a91a7 JM |
1198 | } |
1199 | ||
f461f5cf PM |
1200 | /* This function avoids direct calls to fprintf |
1201 | in the parser generated debug code. */ | |
1202 | void | |
1203 | parser_fprintf (FILE *x, const char *y, ...) | |
1204 | { | |
1205 | va_list args; | |
1206 | va_start (args, y); | |
1207 | if (x == stderr) | |
1208 | vfprintf_unfiltered (gdb_stderr, y, args); | |
1209 | else | |
1210 | { | |
1211 | fprintf_unfiltered (gdb_stderr, " Unknown FILE used.\n"); | |
1212 | vfprintf_unfiltered (gdb_stderr, y, args); | |
1213 | } | |
1214 | va_end (args); | |
1215 | } | |
1216 | ||
ac9a91a7 | 1217 | void |
fba45db2 | 1218 | _initialize_parse (void) |
ac9a91a7 JM |
1219 | { |
1220 | type_stack_size = 80; | |
1221 | type_stack_depth = 0; | |
1222 | type_stack = (union type_stack_elt *) | |
1223 | xmalloc (type_stack_size * sizeof (*type_stack)); | |
1224 | ||
1225 | build_parse (); | |
c906108c | 1226 | |
0f71a2f6 JM |
1227 | /* FIXME - For the moment, handle types by swapping them in and out. |
1228 | Should be using the per-architecture data-pointer and a large | |
1229 | struct. */ | |
046a4708 AC |
1230 | DEPRECATED_REGISTER_GDBARCH_SWAP (msym_text_symbol_type); |
1231 | DEPRECATED_REGISTER_GDBARCH_SWAP (msym_data_symbol_type); | |
1232 | DEPRECATED_REGISTER_GDBARCH_SWAP (msym_unknown_symbol_type); | |
1233 | deprecated_register_gdbarch_swap (NULL, 0, build_parse); | |
0f71a2f6 | 1234 | |
85c07804 AC |
1235 | add_setshow_zinteger_cmd ("expression", class_maintenance, |
1236 | &expressiondebug, _("\ | |
1237 | Set expression debugging."), _("\ | |
1238 | Show expression debugging."), _("\ | |
1239 | When non-zero, the internal representation of expressions will be printed."), | |
1240 | NULL, | |
920d2a44 | 1241 | show_expressiondebug, |
85c07804 | 1242 | &setdebuglist, &showdebuglist); |
c906108c | 1243 | } |