Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Parse expressions for GDB. |
c4a172b5 | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
9b254dd1 DJ |
4 | 1998, 1999, 2000, 2001, 2004, 2005, 2007, 2008 |
5 | Free Software Foundation, Inc. | |
c4a172b5 | 6 | |
c906108c SS |
7 | Modified from expread.y by the Department of Computer Science at the |
8 | State University of New York at Buffalo, 1991. | |
9 | ||
c5aa993b | 10 | This file is part of GDB. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is free software; you can redistribute it and/or modify |
13 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 14 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 15 | (at your option) any later version. |
c906108c | 16 | |
c5aa993b JM |
17 | This program is distributed in the hope that it will be useful, |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
c906108c | 21 | |
c5aa993b | 22 | You should have received a copy of the GNU General Public License |
a9762ec7 | 23 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
24 | |
25 | /* Parse an expression from text in a string, | |
26 | and return the result as a struct expression pointer. | |
27 | That structure contains arithmetic operations in reverse polish, | |
28 | with constants represented by operations that are followed by special data. | |
29 | See expression.h for the details of the format. | |
30 | What is important here is that it can be built up sequentially | |
31 | during the process of parsing; the lower levels of the tree always | |
32 | come first in the result. */ | |
c5aa993b | 33 | |
cce74817 JM |
34 | #include <ctype.h> |
35 | ||
c906108c SS |
36 | #include "defs.h" |
37 | #include "gdb_string.h" | |
c906108c SS |
38 | #include "symtab.h" |
39 | #include "gdbtypes.h" | |
40 | #include "frame.h" | |
41 | #include "expression.h" | |
42 | #include "value.h" | |
43 | #include "command.h" | |
44 | #include "language.h" | |
0b4e1325 | 45 | #include "f-lang.h" |
c906108c SS |
46 | #include "parser-defs.h" |
47 | #include "gdbcmd.h" | |
c5aa993b | 48 | #include "symfile.h" /* for overlay functions */ |
f57d151a | 49 | #include "inferior.h" |
d16aafd8 | 50 | #include "doublest.h" |
0406ec40 | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
59f92a09 | 53 | #include "source.h" |
9e35dae4 | 54 | #include "objfiles.h" |
e2305d34 | 55 | |
5f9769d1 PH |
56 | /* Standard set of definitions for printing, dumping, prefixifying, |
57 | * and evaluating expressions. */ | |
58 | ||
59 | const struct exp_descriptor exp_descriptor_standard = | |
60 | { | |
61 | print_subexp_standard, | |
62 | operator_length_standard, | |
63 | op_name_standard, | |
64 | dump_subexp_body_standard, | |
65 | evaluate_subexp_standard | |
66 | }; | |
c906108c SS |
67 | \f |
68 | /* Global variables declared in parser-defs.h (and commented there). */ | |
69 | struct expression *expout; | |
70 | int expout_size; | |
71 | int expout_ptr; | |
72 | struct block *expression_context_block; | |
84f0252a | 73 | CORE_ADDR expression_context_pc; |
c906108c SS |
74 | struct block *innermost_block; |
75 | int arglist_len; | |
76 | union type_stack_elt *type_stack; | |
77 | int type_stack_depth, type_stack_size; | |
78 | char *lexptr; | |
665132f9 | 79 | char *prev_lexptr; |
c906108c SS |
80 | int paren_depth; |
81 | int comma_terminates; | |
3a913e29 JB |
82 | |
83 | /* A temporary buffer for identifiers, so we can null-terminate them. | |
84 | ||
85 | We allocate this with xrealloc. parse_exp_1 used to allocate with | |
86 | alloca, using the size of the whole expression as a conservative | |
87 | estimate of the space needed. However, macro expansion can | |
88 | introduce names longer than the original expression; there's no | |
89 | practical way to know beforehand how large that might be. */ | |
90 | char *namecopy; | |
91 | size_t namecopy_size; | |
c906108c | 92 | \f |
c906108c | 93 | static int expressiondebug = 0; |
920d2a44 AC |
94 | static void |
95 | show_expressiondebug (struct ui_file *file, int from_tty, | |
96 | struct cmd_list_element *c, const char *value) | |
97 | { | |
98 | fprintf_filtered (file, _("Expression debugging is %s.\n"), value); | |
99 | } | |
c906108c | 100 | |
74b7792f | 101 | static void free_funcalls (void *ignore); |
c906108c | 102 | |
a14ed312 | 103 | static void prefixify_expression (struct expression *); |
c906108c | 104 | |
570b8f7c AC |
105 | static void prefixify_subexp (struct expression *, struct expression *, int, |
106 | int); | |
c906108c | 107 | |
e85c3284 PH |
108 | static struct expression *parse_exp_in_context (char **, struct block *, int, |
109 | int); | |
110 | ||
a14ed312 | 111 | void _initialize_parse (void); |
392a587b | 112 | |
c906108c SS |
113 | /* Data structure for saving values of arglist_len for function calls whose |
114 | arguments contain other function calls. */ | |
115 | ||
116 | struct funcall | |
117 | { | |
118 | struct funcall *next; | |
119 | int arglist_len; | |
120 | }; | |
121 | ||
122 | static struct funcall *funcall_chain; | |
123 | ||
c906108c SS |
124 | /* Begin counting arguments for a function call, |
125 | saving the data about any containing call. */ | |
126 | ||
127 | void | |
fba45db2 | 128 | start_arglist (void) |
c906108c | 129 | { |
f86f5ca3 | 130 | struct funcall *new; |
c906108c SS |
131 | |
132 | new = (struct funcall *) xmalloc (sizeof (struct funcall)); | |
133 | new->next = funcall_chain; | |
134 | new->arglist_len = arglist_len; | |
135 | arglist_len = 0; | |
136 | funcall_chain = new; | |
137 | } | |
138 | ||
139 | /* Return the number of arguments in a function call just terminated, | |
140 | and restore the data for the containing function call. */ | |
141 | ||
142 | int | |
fba45db2 | 143 | end_arglist (void) |
c906108c | 144 | { |
f86f5ca3 PH |
145 | int val = arglist_len; |
146 | struct funcall *call = funcall_chain; | |
c906108c SS |
147 | funcall_chain = call->next; |
148 | arglist_len = call->arglist_len; | |
b8c9b27d | 149 | xfree (call); |
c906108c SS |
150 | return val; |
151 | } | |
152 | ||
153 | /* Free everything in the funcall chain. | |
154 | Used when there is an error inside parsing. */ | |
155 | ||
156 | static void | |
74b7792f | 157 | free_funcalls (void *ignore) |
c906108c | 158 | { |
f86f5ca3 | 159 | struct funcall *call, *next; |
c906108c SS |
160 | |
161 | for (call = funcall_chain; call; call = next) | |
162 | { | |
163 | next = call->next; | |
b8c9b27d | 164 | xfree (call); |
c906108c SS |
165 | } |
166 | } | |
167 | \f | |
168 | /* This page contains the functions for adding data to the struct expression | |
169 | being constructed. */ | |
170 | ||
171 | /* Add one element to the end of the expression. */ | |
172 | ||
173 | /* To avoid a bug in the Sun 4 compiler, we pass things that can fit into | |
174 | a register through here */ | |
175 | ||
176 | void | |
fba45db2 | 177 | write_exp_elt (union exp_element expelt) |
c906108c SS |
178 | { |
179 | if (expout_ptr >= expout_size) | |
180 | { | |
181 | expout_size *= 2; | |
182 | expout = (struct expression *) | |
183 | xrealloc ((char *) expout, sizeof (struct expression) | |
184 | + EXP_ELEM_TO_BYTES (expout_size)); | |
185 | } | |
186 | expout->elts[expout_ptr++] = expelt; | |
187 | } | |
188 | ||
189 | void | |
fba45db2 | 190 | write_exp_elt_opcode (enum exp_opcode expelt) |
c906108c SS |
191 | { |
192 | union exp_element tmp; | |
09153d55 | 193 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
194 | |
195 | tmp.opcode = expelt; | |
196 | ||
197 | write_exp_elt (tmp); | |
198 | } | |
199 | ||
200 | void | |
fba45db2 | 201 | write_exp_elt_sym (struct symbol *expelt) |
c906108c SS |
202 | { |
203 | union exp_element tmp; | |
09153d55 | 204 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
205 | |
206 | tmp.symbol = expelt; | |
207 | ||
208 | write_exp_elt (tmp); | |
209 | } | |
210 | ||
211 | void | |
fba45db2 | 212 | write_exp_elt_block (struct block *b) |
c906108c SS |
213 | { |
214 | union exp_element tmp; | |
09153d55 | 215 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
216 | tmp.block = b; |
217 | write_exp_elt (tmp); | |
218 | } | |
219 | ||
9e35dae4 DJ |
220 | void |
221 | write_exp_elt_objfile (struct objfile *objfile) | |
222 | { | |
223 | union exp_element tmp; | |
224 | memset (&tmp, 0, sizeof (union exp_element)); | |
225 | tmp.objfile = objfile; | |
226 | write_exp_elt (tmp); | |
227 | } | |
228 | ||
c906108c | 229 | void |
fba45db2 | 230 | write_exp_elt_longcst (LONGEST expelt) |
c906108c SS |
231 | { |
232 | union exp_element tmp; | |
09153d55 | 233 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
234 | |
235 | tmp.longconst = expelt; | |
236 | ||
237 | write_exp_elt (tmp); | |
238 | } | |
239 | ||
240 | void | |
fba45db2 | 241 | write_exp_elt_dblcst (DOUBLEST expelt) |
c906108c SS |
242 | { |
243 | union exp_element tmp; | |
09153d55 | 244 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
245 | |
246 | tmp.doubleconst = expelt; | |
247 | ||
248 | write_exp_elt (tmp); | |
249 | } | |
250 | ||
27bc4d80 TJB |
251 | void |
252 | write_exp_elt_decfloatcst (gdb_byte expelt[16]) | |
253 | { | |
254 | union exp_element tmp; | |
255 | int index; | |
256 | ||
257 | for (index = 0; index < 16; index++) | |
258 | tmp.decfloatconst[index] = expelt[index]; | |
259 | ||
260 | write_exp_elt (tmp); | |
261 | } | |
262 | ||
c906108c | 263 | void |
fba45db2 | 264 | write_exp_elt_type (struct type *expelt) |
c906108c SS |
265 | { |
266 | union exp_element tmp; | |
09153d55 | 267 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
268 | |
269 | tmp.type = expelt; | |
270 | ||
271 | write_exp_elt (tmp); | |
272 | } | |
273 | ||
274 | void | |
fba45db2 | 275 | write_exp_elt_intern (struct internalvar *expelt) |
c906108c SS |
276 | { |
277 | union exp_element tmp; | |
09153d55 | 278 | memset (&tmp, 0, sizeof (union exp_element)); |
c906108c SS |
279 | |
280 | tmp.internalvar = expelt; | |
281 | ||
282 | write_exp_elt (tmp); | |
283 | } | |
284 | ||
285 | /* Add a string constant to the end of the expression. | |
286 | ||
287 | String constants are stored by first writing an expression element | |
288 | that contains the length of the string, then stuffing the string | |
289 | constant itself into however many expression elements are needed | |
290 | to hold it, and then writing another expression element that contains | |
291 | the length of the string. I.E. an expression element at each end of | |
292 | the string records the string length, so you can skip over the | |
293 | expression elements containing the actual string bytes from either | |
294 | end of the string. Note that this also allows gdb to handle | |
295 | strings with embedded null bytes, as is required for some languages. | |
296 | ||
297 | Don't be fooled by the fact that the string is null byte terminated, | |
298 | this is strictly for the convenience of debugging gdb itself. Gdb | |
299 | Gdb does not depend up the string being null terminated, since the | |
300 | actual length is recorded in expression elements at each end of the | |
301 | string. The null byte is taken into consideration when computing how | |
302 | many expression elements are required to hold the string constant, of | |
303 | course. */ | |
304 | ||
305 | ||
306 | void | |
fba45db2 | 307 | write_exp_string (struct stoken str) |
c906108c | 308 | { |
f86f5ca3 PH |
309 | int len = str.length; |
310 | int lenelt; | |
311 | char *strdata; | |
c906108c SS |
312 | |
313 | /* Compute the number of expression elements required to hold the string | |
314 | (including a null byte terminator), along with one expression element | |
315 | at each end to record the actual string length (not including the | |
316 | null byte terminator). */ | |
317 | ||
318 | lenelt = 2 + BYTES_TO_EXP_ELEM (len + 1); | |
319 | ||
320 | /* Ensure that we have enough available expression elements to store | |
321 | everything. */ | |
322 | ||
323 | if ((expout_ptr + lenelt) >= expout_size) | |
324 | { | |
325 | expout_size = max (expout_size * 2, expout_ptr + lenelt + 10); | |
326 | expout = (struct expression *) | |
327 | xrealloc ((char *) expout, (sizeof (struct expression) | |
328 | + EXP_ELEM_TO_BYTES (expout_size))); | |
329 | } | |
330 | ||
331 | /* Write the leading length expression element (which advances the current | |
332 | expression element index), then write the string constant followed by a | |
333 | terminating null byte, and then write the trailing length expression | |
334 | element. */ | |
335 | ||
336 | write_exp_elt_longcst ((LONGEST) len); | |
337 | strdata = (char *) &expout->elts[expout_ptr]; | |
338 | memcpy (strdata, str.ptr, len); | |
339 | *(strdata + len) = '\0'; | |
340 | expout_ptr += lenelt - 2; | |
341 | write_exp_elt_longcst ((LONGEST) len); | |
342 | } | |
343 | ||
344 | /* Add a bitstring constant to the end of the expression. | |
345 | ||
346 | Bitstring constants are stored by first writing an expression element | |
347 | that contains the length of the bitstring (in bits), then stuffing the | |
348 | bitstring constant itself into however many expression elements are | |
349 | needed to hold it, and then writing another expression element that | |
350 | contains the length of the bitstring. I.E. an expression element at | |
351 | each end of the bitstring records the bitstring length, so you can skip | |
352 | over the expression elements containing the actual bitstring bytes from | |
353 | either end of the bitstring. */ | |
354 | ||
355 | void | |
fba45db2 | 356 | write_exp_bitstring (struct stoken str) |
c906108c | 357 | { |
f86f5ca3 PH |
358 | int bits = str.length; /* length in bits */ |
359 | int len = (bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
360 | int lenelt; | |
361 | char *strdata; | |
c906108c SS |
362 | |
363 | /* Compute the number of expression elements required to hold the bitstring, | |
364 | along with one expression element at each end to record the actual | |
365 | bitstring length in bits. */ | |
366 | ||
367 | lenelt = 2 + BYTES_TO_EXP_ELEM (len); | |
368 | ||
369 | /* Ensure that we have enough available expression elements to store | |
370 | everything. */ | |
371 | ||
372 | if ((expout_ptr + lenelt) >= expout_size) | |
373 | { | |
374 | expout_size = max (expout_size * 2, expout_ptr + lenelt + 10); | |
375 | expout = (struct expression *) | |
376 | xrealloc ((char *) expout, (sizeof (struct expression) | |
377 | + EXP_ELEM_TO_BYTES (expout_size))); | |
378 | } | |
379 | ||
380 | /* Write the leading length expression element (which advances the current | |
381 | expression element index), then write the bitstring constant, and then | |
382 | write the trailing length expression element. */ | |
383 | ||
384 | write_exp_elt_longcst ((LONGEST) bits); | |
385 | strdata = (char *) &expout->elts[expout_ptr]; | |
386 | memcpy (strdata, str.ptr, len); | |
387 | expout_ptr += lenelt - 2; | |
388 | write_exp_elt_longcst ((LONGEST) bits); | |
389 | } | |
390 | ||
391 | /* Add the appropriate elements for a minimal symbol to the end of | |
392 | the expression. The rationale behind passing in text_symbol_type and | |
393 | data_symbol_type was so that Modula-2 could pass in WORD for | |
394 | data_symbol_type. Perhaps it still is useful to have those types vary | |
395 | based on the language, but they no longer have names like "int", so | |
396 | the initial rationale is gone. */ | |
397 | ||
c906108c | 398 | void |
a858089e MS |
399 | write_exp_msymbol (struct minimal_symbol *msymbol, |
400 | struct type *text_symbol_type, | |
401 | struct type *data_symbol_type) | |
c906108c | 402 | { |
bccdca4a UW |
403 | struct objfile *objfile = msymbol_objfile (msymbol); |
404 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
405 | ||
406 | CORE_ADDR addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
407 | asection *bfd_section = SYMBOL_BFD_SECTION (msymbol); | |
408 | enum minimal_symbol_type type = msymbol->type; | |
409 | CORE_ADDR pc; | |
410 | ||
411 | /* The minimal symbol might point to a function descriptor; | |
412 | resolve it to the actual code address instead. */ | |
413 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, ¤t_target); | |
414 | if (pc != addr) | |
415 | { | |
416 | /* In this case, assume we have a code symbol instead of | |
417 | a data symbol. */ | |
418 | type = mst_text; | |
419 | bfd_section = NULL; | |
420 | addr = pc; | |
421 | } | |
422 | ||
423 | if (overlay_debugging) | |
424 | addr = symbol_overlayed_address (addr, bfd_section); | |
c906108c SS |
425 | |
426 | write_exp_elt_opcode (OP_LONG); | |
a858089e MS |
427 | /* Let's make the type big enough to hold a 64-bit address. */ |
428 | write_exp_elt_type (builtin_type_CORE_ADDR); | |
c906108c | 429 | write_exp_elt_longcst ((LONGEST) addr); |
c906108c SS |
430 | write_exp_elt_opcode (OP_LONG); |
431 | ||
bccdca4a | 432 | if (bfd_section && bfd_section->flags & SEC_THREAD_LOCAL) |
9e35dae4 | 433 | { |
9e35dae4 | 434 | write_exp_elt_opcode (UNOP_MEMVAL_TLS); |
bccdca4a | 435 | write_exp_elt_objfile (objfile); |
64c50499 | 436 | write_exp_elt_type (builtin_type (gdbarch)->nodebug_tls_symbol); |
9e35dae4 DJ |
437 | write_exp_elt_opcode (UNOP_MEMVAL_TLS); |
438 | return; | |
439 | } | |
440 | ||
c906108c | 441 | write_exp_elt_opcode (UNOP_MEMVAL); |
bccdca4a | 442 | switch (type) |
c906108c SS |
443 | { |
444 | case mst_text: | |
445 | case mst_file_text: | |
446 | case mst_solib_trampoline: | |
64c50499 | 447 | write_exp_elt_type (builtin_type (gdbarch)->nodebug_text_symbol); |
c906108c SS |
448 | break; |
449 | ||
450 | case mst_data: | |
451 | case mst_file_data: | |
452 | case mst_bss: | |
453 | case mst_file_bss: | |
64c50499 | 454 | write_exp_elt_type (builtin_type (gdbarch)->nodebug_data_symbol); |
c906108c SS |
455 | break; |
456 | ||
457 | default: | |
64c50499 | 458 | write_exp_elt_type (builtin_type (gdbarch)->nodebug_unknown_symbol); |
c906108c SS |
459 | break; |
460 | } | |
461 | write_exp_elt_opcode (UNOP_MEMVAL); | |
462 | } | |
463 | \f | |
464 | /* Recognize tokens that start with '$'. These include: | |
465 | ||
c5aa993b JM |
466 | $regname A native register name or a "standard |
467 | register name". | |
c906108c | 468 | |
c5aa993b JM |
469 | $variable A convenience variable with a name chosen |
470 | by the user. | |
c906108c | 471 | |
c5aa993b JM |
472 | $digits Value history with index <digits>, starting |
473 | from the first value which has index 1. | |
c906108c | 474 | |
c5aa993b JM |
475 | $$digits Value history with index <digits> relative |
476 | to the last value. I.E. $$0 is the last | |
477 | value, $$1 is the one previous to that, $$2 | |
478 | is the one previous to $$1, etc. | |
c906108c | 479 | |
c5aa993b | 480 | $ | $0 | $$0 The last value in the value history. |
c906108c | 481 | |
c5aa993b JM |
482 | $$ An abbreviation for the second to the last |
483 | value in the value history, I.E. $$1 | |
c906108c | 484 | |
c5aa993b | 485 | */ |
c906108c SS |
486 | |
487 | void | |
fba45db2 | 488 | write_dollar_variable (struct stoken str) |
c906108c | 489 | { |
d7318818 RC |
490 | struct symbol *sym = NULL; |
491 | struct minimal_symbol *msym = NULL; | |
c4a3d09a | 492 | struct internalvar *isym = NULL; |
d7318818 | 493 | |
c906108c SS |
494 | /* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1) |
495 | and $$digits (equivalent to $<-digits> if you could type that). */ | |
496 | ||
c906108c SS |
497 | int negate = 0; |
498 | int i = 1; | |
499 | /* Double dollar means negate the number and add -1 as well. | |
500 | Thus $$ alone means -1. */ | |
501 | if (str.length >= 2 && str.ptr[1] == '$') | |
502 | { | |
503 | negate = 1; | |
504 | i = 2; | |
505 | } | |
506 | if (i == str.length) | |
507 | { | |
508 | /* Just dollars (one or two) */ | |
c5aa993b | 509 | i = -negate; |
c906108c SS |
510 | goto handle_last; |
511 | } | |
512 | /* Is the rest of the token digits? */ | |
513 | for (; i < str.length; i++) | |
514 | if (!(str.ptr[i] >= '0' && str.ptr[i] <= '9')) | |
515 | break; | |
516 | if (i == str.length) | |
517 | { | |
518 | i = atoi (str.ptr + 1 + negate); | |
519 | if (negate) | |
c5aa993b | 520 | i = -i; |
c906108c SS |
521 | goto handle_last; |
522 | } | |
c5aa993b | 523 | |
c906108c SS |
524 | /* Handle tokens that refer to machine registers: |
525 | $ followed by a register name. */ | |
206415a3 | 526 | i = frame_map_name_to_regnum (deprecated_safe_get_selected_frame (), |
eb8bc282 | 527 | str.ptr + 1, str.length - 1); |
c5aa993b | 528 | if (i >= 0) |
c906108c SS |
529 | goto handle_register; |
530 | ||
c4a3d09a MF |
531 | /* Any names starting with $ are probably debugger internal variables. */ |
532 | ||
533 | isym = lookup_only_internalvar (copy_name (str) + 1); | |
534 | if (isym) | |
535 | { | |
536 | write_exp_elt_opcode (OP_INTERNALVAR); | |
537 | write_exp_elt_intern (isym); | |
538 | write_exp_elt_opcode (OP_INTERNALVAR); | |
539 | return; | |
540 | } | |
541 | ||
d7318818 RC |
542 | /* On some systems, such as HP-UX and hppa-linux, certain system routines |
543 | have names beginning with $ or $$. Check for those, first. */ | |
544 | ||
545 | sym = lookup_symbol (copy_name (str), (struct block *) NULL, | |
546 | VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL); | |
547 | if (sym) | |
548 | { | |
549 | write_exp_elt_opcode (OP_VAR_VALUE); | |
550 | write_exp_elt_block (block_found); /* set by lookup_symbol */ | |
551 | write_exp_elt_sym (sym); | |
552 | write_exp_elt_opcode (OP_VAR_VALUE); | |
553 | return; | |
554 | } | |
555 | msym = lookup_minimal_symbol (copy_name (str), NULL, NULL); | |
556 | if (msym) | |
c906108c | 557 | { |
d7318818 RC |
558 | write_exp_msymbol (msym, |
559 | lookup_function_type (builtin_type_int), | |
560 | builtin_type_int); | |
561 | return; | |
c906108c | 562 | } |
c5aa993b | 563 | |
c4a3d09a | 564 | /* Any other names are assumed to be debugger internal variables. */ |
c906108c SS |
565 | |
566 | write_exp_elt_opcode (OP_INTERNALVAR); | |
c4a3d09a | 567 | write_exp_elt_intern (create_internalvar (copy_name (str) + 1)); |
c5aa993b | 568 | write_exp_elt_opcode (OP_INTERNALVAR); |
c906108c | 569 | return; |
c5aa993b | 570 | handle_last: |
c906108c SS |
571 | write_exp_elt_opcode (OP_LAST); |
572 | write_exp_elt_longcst ((LONGEST) i); | |
573 | write_exp_elt_opcode (OP_LAST); | |
574 | return; | |
c5aa993b | 575 | handle_register: |
c906108c | 576 | write_exp_elt_opcode (OP_REGISTER); |
67f3407f DJ |
577 | str.length--; |
578 | str.ptr++; | |
579 | write_exp_string (str); | |
c5aa993b | 580 | write_exp_elt_opcode (OP_REGISTER); |
c906108c SS |
581 | return; |
582 | } | |
583 | ||
584 | ||
c906108c | 585 | char * |
fba45db2 | 586 | find_template_name_end (char *p) |
c906108c SS |
587 | { |
588 | int depth = 1; | |
589 | int just_seen_right = 0; | |
590 | int just_seen_colon = 0; | |
591 | int just_seen_space = 0; | |
c5aa993b | 592 | |
c906108c SS |
593 | if (!p || (*p != '<')) |
594 | return 0; | |
595 | ||
596 | while (*++p) | |
597 | { | |
598 | switch (*p) | |
c5aa993b JM |
599 | { |
600 | case '\'': | |
601 | case '\"': | |
602 | case '{': | |
603 | case '}': | |
604 | /* In future, may want to allow these?? */ | |
605 | return 0; | |
606 | case '<': | |
607 | depth++; /* start nested template */ | |
608 | if (just_seen_colon || just_seen_right || just_seen_space) | |
609 | return 0; /* but not after : or :: or > or space */ | |
610 | break; | |
611 | case '>': | |
612 | if (just_seen_colon || just_seen_right) | |
613 | return 0; /* end a (nested?) template */ | |
614 | just_seen_right = 1; /* but not after : or :: */ | |
615 | if (--depth == 0) /* also disallow >>, insist on > > */ | |
616 | return ++p; /* if outermost ended, return */ | |
617 | break; | |
618 | case ':': | |
619 | if (just_seen_space || (just_seen_colon > 1)) | |
620 | return 0; /* nested class spec coming up */ | |
621 | just_seen_colon++; /* we allow :: but not :::: */ | |
622 | break; | |
623 | case ' ': | |
624 | break; | |
625 | default: | |
626 | if (!((*p >= 'a' && *p <= 'z') || /* allow token chars */ | |
627 | (*p >= 'A' && *p <= 'Z') || | |
628 | (*p >= '0' && *p <= '9') || | |
629 | (*p == '_') || (*p == ',') || /* commas for template args */ | |
630 | (*p == '&') || (*p == '*') || /* pointer and ref types */ | |
631 | (*p == '(') || (*p == ')') || /* function types */ | |
632 | (*p == '[') || (*p == ']'))) /* array types */ | |
633 | return 0; | |
634 | } | |
c906108c | 635 | if (*p != ' ') |
c5aa993b | 636 | just_seen_space = 0; |
c906108c | 637 | if (*p != ':') |
c5aa993b | 638 | just_seen_colon = 0; |
c906108c | 639 | if (*p != '>') |
c5aa993b | 640 | just_seen_right = 0; |
c906108c SS |
641 | } |
642 | return 0; | |
643 | } | |
c5aa993b | 644 | \f |
c906108c SS |
645 | |
646 | ||
c906108c SS |
647 | /* Return a null-terminated temporary copy of the name |
648 | of a string token. */ | |
649 | ||
650 | char * | |
fba45db2 | 651 | copy_name (struct stoken token) |
c906108c | 652 | { |
3a913e29 JB |
653 | /* Make sure there's enough space for the token. */ |
654 | if (namecopy_size < token.length + 1) | |
655 | { | |
656 | namecopy_size = token.length + 1; | |
657 | namecopy = xrealloc (namecopy, token.length + 1); | |
658 | } | |
659 | ||
c906108c SS |
660 | memcpy (namecopy, token.ptr, token.length); |
661 | namecopy[token.length] = 0; | |
3a913e29 | 662 | |
c906108c SS |
663 | return namecopy; |
664 | } | |
665 | \f | |
666 | /* Reverse an expression from suffix form (in which it is constructed) | |
667 | to prefix form (in which we can conveniently print or execute it). */ | |
668 | ||
669 | static void | |
f86f5ca3 | 670 | prefixify_expression (struct expression *expr) |
c906108c | 671 | { |
df2a60d0 | 672 | int len = sizeof (struct expression) + EXP_ELEM_TO_BYTES (expr->nelts); |
f86f5ca3 PH |
673 | struct expression *temp; |
674 | int inpos = expr->nelts, outpos = 0; | |
c906108c SS |
675 | |
676 | temp = (struct expression *) alloca (len); | |
677 | ||
678 | /* Copy the original expression into temp. */ | |
679 | memcpy (temp, expr, len); | |
680 | ||
681 | prefixify_subexp (temp, expr, inpos, outpos); | |
682 | } | |
683 | ||
24daaebc PH |
684 | /* Return the number of exp_elements in the postfix subexpression |
685 | of EXPR whose operator is at index ENDPOS - 1 in EXPR. */ | |
c906108c SS |
686 | |
687 | int | |
f86f5ca3 | 688 | length_of_subexp (struct expression *expr, int endpos) |
24daaebc PH |
689 | { |
690 | int oplen, args, i; | |
691 | ||
692 | operator_length (expr, endpos, &oplen, &args); | |
693 | ||
694 | while (args > 0) | |
695 | { | |
696 | oplen += length_of_subexp (expr, endpos - oplen); | |
697 | args--; | |
698 | } | |
699 | ||
700 | return oplen; | |
701 | } | |
702 | ||
703 | /* Sets *OPLENP to the length of the operator whose (last) index is | |
704 | ENDPOS - 1 in EXPR, and sets *ARGSP to the number of arguments that | |
705 | operator takes. */ | |
706 | ||
707 | void | |
708 | operator_length (struct expression *expr, int endpos, int *oplenp, int *argsp) | |
5f9769d1 PH |
709 | { |
710 | expr->language_defn->la_exp_desc->operator_length (expr, endpos, | |
711 | oplenp, argsp); | |
712 | } | |
713 | ||
714 | /* Default value for operator_length in exp_descriptor vectors. */ | |
715 | ||
716 | void | |
717 | operator_length_standard (struct expression *expr, int endpos, | |
718 | int *oplenp, int *argsp) | |
c906108c | 719 | { |
f86f5ca3 PH |
720 | int oplen = 1; |
721 | int args = 0; | |
0b4e1325 | 722 | enum f90_range_type range_type; |
f86f5ca3 | 723 | int i; |
c906108c SS |
724 | |
725 | if (endpos < 1) | |
8a3fe4f8 | 726 | error (_("?error in operator_length_standard")); |
c906108c SS |
727 | |
728 | i = (int) expr->elts[endpos - 1].opcode; | |
729 | ||
730 | switch (i) | |
731 | { | |
732 | /* C++ */ | |
733 | case OP_SCOPE: | |
734 | oplen = longest_to_int (expr->elts[endpos - 2].longconst); | |
735 | oplen = 5 + BYTES_TO_EXP_ELEM (oplen + 1); | |
736 | break; | |
737 | ||
738 | case OP_LONG: | |
739 | case OP_DOUBLE: | |
27bc4d80 | 740 | case OP_DECFLOAT: |
c906108c SS |
741 | case OP_VAR_VALUE: |
742 | oplen = 4; | |
743 | break; | |
744 | ||
745 | case OP_TYPE: | |
746 | case OP_BOOL: | |
747 | case OP_LAST: | |
c906108c SS |
748 | case OP_INTERNALVAR: |
749 | oplen = 3; | |
750 | break; | |
751 | ||
752 | case OP_COMPLEX: | |
c5aa993b | 753 | oplen = 1; |
c906108c | 754 | args = 2; |
c5aa993b | 755 | break; |
c906108c SS |
756 | |
757 | case OP_FUNCALL: | |
758 | case OP_F77_UNDETERMINED_ARGLIST: | |
759 | oplen = 3; | |
760 | args = 1 + longest_to_int (expr->elts[endpos - 2].longconst); | |
761 | break; | |
762 | ||
646df18d | 763 | case OP_OBJC_MSGCALL: /* Objective C message (method) call */ |
53c551b7 AF |
764 | oplen = 4; |
765 | args = 1 + longest_to_int (expr->elts[endpos - 2].longconst); | |
766 | break; | |
767 | ||
c906108c SS |
768 | case UNOP_MAX: |
769 | case UNOP_MIN: | |
770 | oplen = 3; | |
771 | break; | |
772 | ||
c5aa993b JM |
773 | case BINOP_VAL: |
774 | case UNOP_CAST: | |
775 | case UNOP_MEMVAL: | |
c906108c SS |
776 | oplen = 3; |
777 | args = 1; | |
778 | break; | |
779 | ||
9e35dae4 DJ |
780 | case UNOP_MEMVAL_TLS: |
781 | oplen = 4; | |
782 | args = 1; | |
783 | break; | |
784 | ||
c906108c SS |
785 | case UNOP_ABS: |
786 | case UNOP_CAP: | |
787 | case UNOP_CHR: | |
788 | case UNOP_FLOAT: | |
789 | case UNOP_HIGH: | |
790 | case UNOP_ODD: | |
791 | case UNOP_ORD: | |
792 | case UNOP_TRUNC: | |
793 | oplen = 1; | |
794 | args = 1; | |
795 | break; | |
796 | ||
797 | case OP_LABELED: | |
798 | case STRUCTOP_STRUCT: | |
799 | case STRUCTOP_PTR: | |
800 | args = 1; | |
801 | /* fall through */ | |
67f3407f | 802 | case OP_REGISTER: |
c906108c SS |
803 | case OP_M2_STRING: |
804 | case OP_STRING: | |
646df18d AF |
805 | case OP_OBJC_NSSTRING: /* Objective C Foundation Class NSString constant */ |
806 | case OP_OBJC_SELECTOR: /* Objective C "@selector" pseudo-op */ | |
c906108c | 807 | case OP_NAME: |
c906108c SS |
808 | oplen = longest_to_int (expr->elts[endpos - 2].longconst); |
809 | oplen = 4 + BYTES_TO_EXP_ELEM (oplen + 1); | |
810 | break; | |
811 | ||
812 | case OP_BITSTRING: | |
813 | oplen = longest_to_int (expr->elts[endpos - 2].longconst); | |
814 | oplen = (oplen + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
815 | oplen = 4 + BYTES_TO_EXP_ELEM (oplen); | |
816 | break; | |
817 | ||
818 | case OP_ARRAY: | |
819 | oplen = 4; | |
820 | args = longest_to_int (expr->elts[endpos - 2].longconst); | |
821 | args -= longest_to_int (expr->elts[endpos - 3].longconst); | |
822 | args += 1; | |
823 | break; | |
824 | ||
825 | case TERNOP_COND: | |
826 | case TERNOP_SLICE: | |
827 | case TERNOP_SLICE_COUNT: | |
828 | args = 3; | |
829 | break; | |
830 | ||
831 | /* Modula-2 */ | |
c5aa993b | 832 | case MULTI_SUBSCRIPT: |
c906108c | 833 | oplen = 3; |
c5aa993b | 834 | args = 1 + longest_to_int (expr->elts[endpos - 2].longconst); |
c906108c SS |
835 | break; |
836 | ||
837 | case BINOP_ASSIGN_MODIFY: | |
838 | oplen = 3; | |
839 | args = 2; | |
840 | break; | |
841 | ||
842 | /* C++ */ | |
843 | case OP_THIS: | |
646df18d | 844 | case OP_OBJC_SELF: |
c906108c SS |
845 | oplen = 2; |
846 | break; | |
847 | ||
0b4e1325 WZ |
848 | case OP_F90_RANGE: |
849 | oplen = 3; | |
850 | ||
851 | range_type = longest_to_int (expr->elts[endpos - 2].longconst); | |
852 | switch (range_type) | |
853 | { | |
854 | case LOW_BOUND_DEFAULT: | |
855 | case HIGH_BOUND_DEFAULT: | |
856 | args = 1; | |
857 | break; | |
858 | case BOTH_BOUND_DEFAULT: | |
859 | args = 0; | |
860 | break; | |
861 | case NONE_BOUND_DEFAULT: | |
862 | args = 2; | |
863 | break; | |
864 | } | |
865 | ||
866 | break; | |
867 | ||
c906108c SS |
868 | default: |
869 | args = 1 + (i < (int) BINOP_END); | |
870 | } | |
871 | ||
24daaebc PH |
872 | *oplenp = oplen; |
873 | *argsp = args; | |
c906108c SS |
874 | } |
875 | ||
876 | /* Copy the subexpression ending just before index INEND in INEXPR | |
877 | into OUTEXPR, starting at index OUTBEG. | |
878 | In the process, convert it from suffix to prefix form. */ | |
879 | ||
880 | static void | |
f86f5ca3 PH |
881 | prefixify_subexp (struct expression *inexpr, |
882 | struct expression *outexpr, int inend, int outbeg) | |
c906108c | 883 | { |
24daaebc PH |
884 | int oplen; |
885 | int args; | |
f86f5ca3 | 886 | int i; |
c906108c SS |
887 | int *arglens; |
888 | enum exp_opcode opcode; | |
889 | ||
24daaebc | 890 | operator_length (inexpr, inend, &oplen, &args); |
c906108c SS |
891 | |
892 | /* Copy the final operator itself, from the end of the input | |
893 | to the beginning of the output. */ | |
894 | inend -= oplen; | |
895 | memcpy (&outexpr->elts[outbeg], &inexpr->elts[inend], | |
896 | EXP_ELEM_TO_BYTES (oplen)); | |
897 | outbeg += oplen; | |
898 | ||
899 | /* Find the lengths of the arg subexpressions. */ | |
900 | arglens = (int *) alloca (args * sizeof (int)); | |
901 | for (i = args - 1; i >= 0; i--) | |
902 | { | |
903 | oplen = length_of_subexp (inexpr, inend); | |
904 | arglens[i] = oplen; | |
905 | inend -= oplen; | |
906 | } | |
907 | ||
908 | /* Now copy each subexpression, preserving the order of | |
909 | the subexpressions, but prefixifying each one. | |
910 | In this loop, inend starts at the beginning of | |
911 | the expression this level is working on | |
912 | and marches forward over the arguments. | |
913 | outbeg does similarly in the output. */ | |
914 | for (i = 0; i < args; i++) | |
915 | { | |
916 | oplen = arglens[i]; | |
917 | inend += oplen; | |
918 | prefixify_subexp (inexpr, outexpr, inend, outbeg); | |
919 | outbeg += oplen; | |
920 | } | |
921 | } | |
922 | \f | |
923 | /* This page contains the two entry points to this file. */ | |
924 | ||
925 | /* Read an expression from the string *STRINGPTR points to, | |
926 | parse it, and return a pointer to a struct expression that we malloc. | |
927 | Use block BLOCK as the lexical context for variable names; | |
928 | if BLOCK is zero, use the block of the selected stack frame. | |
929 | Meanwhile, advance *STRINGPTR to point after the expression, | |
930 | at the first nonwhite character that is not part of the expression | |
931 | (possibly a null character). | |
932 | ||
933 | If COMMA is nonzero, stop if a comma is reached. */ | |
934 | ||
935 | struct expression * | |
fba45db2 | 936 | parse_exp_1 (char **stringptr, struct block *block, int comma) |
e85c3284 PH |
937 | { |
938 | return parse_exp_in_context (stringptr, block, comma, 0); | |
939 | } | |
940 | ||
941 | /* As for parse_exp_1, except that if VOID_CONTEXT_P, then | |
942 | no value is expected from the expression. */ | |
943 | ||
944 | static struct expression * | |
945 | parse_exp_in_context (char **stringptr, struct block *block, int comma, | |
946 | int void_context_p) | |
c906108c SS |
947 | { |
948 | struct cleanup *old_chain; | |
949 | ||
950 | lexptr = *stringptr; | |
665132f9 | 951 | prev_lexptr = NULL; |
c906108c SS |
952 | |
953 | paren_depth = 0; | |
954 | type_stack_depth = 0; | |
955 | ||
956 | comma_terminates = comma; | |
957 | ||
958 | if (lexptr == 0 || *lexptr == 0) | |
e2e0b3e5 | 959 | error_no_arg (_("expression to compute")); |
c906108c | 960 | |
74b7792f | 961 | old_chain = make_cleanup (free_funcalls, 0 /*ignore*/); |
c906108c SS |
962 | funcall_chain = 0; |
963 | ||
d705c43c | 964 | expression_context_block = block; |
59f92a09 | 965 | |
d705c43c PA |
966 | /* If no context specified, try using the current frame, if any. */ |
967 | if (!expression_context_block) | |
968 | expression_context_block = get_selected_block (&expression_context_pc); | |
969 | else | |
970 | expression_context_pc = BLOCK_START (expression_context_block); | |
59f92a09 | 971 | |
d705c43c | 972 | /* Fall back to using the current source static context, if any. */ |
59f92a09 | 973 | |
d705c43c | 974 | if (!expression_context_block) |
59f92a09 FF |
975 | { |
976 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); | |
977 | if (cursal.symtab) | |
d705c43c PA |
978 | expression_context_block |
979 | = BLOCKVECTOR_BLOCK (BLOCKVECTOR (cursal.symtab), STATIC_BLOCK); | |
980 | if (expression_context_block) | |
981 | expression_context_pc = BLOCK_START (expression_context_block); | |
84f0252a | 982 | } |
c906108c | 983 | |
c906108c SS |
984 | expout_size = 10; |
985 | expout_ptr = 0; | |
986 | expout = (struct expression *) | |
987 | xmalloc (sizeof (struct expression) + EXP_ELEM_TO_BYTES (expout_size)); | |
988 | expout->language_defn = current_language; | |
c13c43fd | 989 | make_cleanup (free_current_contents, &expout); |
c906108c SS |
990 | |
991 | if (current_language->la_parser ()) | |
992 | current_language->la_error (NULL); | |
993 | ||
994 | discard_cleanups (old_chain); | |
995 | ||
996 | /* Record the actual number of expression elements, and then | |
997 | reallocate the expression memory so that we free up any | |
998 | excess elements. */ | |
999 | ||
1000 | expout->nelts = expout_ptr; | |
1001 | expout = (struct expression *) | |
1002 | xrealloc ((char *) expout, | |
1003 | sizeof (struct expression) + EXP_ELEM_TO_BYTES (expout_ptr));; | |
1004 | ||
1005 | /* Convert expression from postfix form as generated by yacc | |
1006 | parser, to a prefix form. */ | |
1007 | ||
c906108c | 1008 | if (expressiondebug) |
24daaebc PH |
1009 | dump_raw_expression (expout, gdb_stdlog, |
1010 | "before conversion to prefix form"); | |
c906108c SS |
1011 | |
1012 | prefixify_expression (expout); | |
1013 | ||
e85c3284 PH |
1014 | current_language->la_post_parser (&expout, void_context_p); |
1015 | ||
c906108c | 1016 | if (expressiondebug) |
24daaebc | 1017 | dump_prefix_expression (expout, gdb_stdlog); |
c906108c SS |
1018 | |
1019 | *stringptr = lexptr; | |
1020 | return expout; | |
1021 | } | |
1022 | ||
1023 | /* Parse STRING as an expression, and complain if this fails | |
1024 | to use up all of the contents of STRING. */ | |
1025 | ||
1026 | struct expression * | |
fba45db2 | 1027 | parse_expression (char *string) |
c906108c | 1028 | { |
f86f5ca3 | 1029 | struct expression *exp; |
c906108c SS |
1030 | exp = parse_exp_1 (&string, 0, 0); |
1031 | if (*string) | |
8a3fe4f8 | 1032 | error (_("Junk after end of expression.")); |
c906108c SS |
1033 | return exp; |
1034 | } | |
e85c3284 | 1035 | |
e85c3284 PH |
1036 | /* A post-parser that does nothing */ |
1037 | ||
e85c3284 PH |
1038 | void |
1039 | null_post_parser (struct expression **exp, int void_context_p) | |
1040 | { | |
1041 | } | |
c906108c SS |
1042 | \f |
1043 | /* Stuff for maintaining a stack of types. Currently just used by C, but | |
1044 | probably useful for any language which declares its types "backwards". */ | |
1045 | ||
47663de5 MS |
1046 | static void |
1047 | check_type_stack_depth (void) | |
c906108c SS |
1048 | { |
1049 | if (type_stack_depth == type_stack_size) | |
1050 | { | |
1051 | type_stack_size *= 2; | |
1052 | type_stack = (union type_stack_elt *) | |
1053 | xrealloc ((char *) type_stack, type_stack_size * sizeof (*type_stack)); | |
1054 | } | |
47663de5 MS |
1055 | } |
1056 | ||
1057 | void | |
1058 | push_type (enum type_pieces tp) | |
1059 | { | |
1060 | check_type_stack_depth (); | |
c906108c SS |
1061 | type_stack[type_stack_depth++].piece = tp; |
1062 | } | |
1063 | ||
1064 | void | |
fba45db2 | 1065 | push_type_int (int n) |
c906108c | 1066 | { |
47663de5 | 1067 | check_type_stack_depth (); |
c906108c SS |
1068 | type_stack[type_stack_depth++].int_val = n; |
1069 | } | |
1070 | ||
47663de5 MS |
1071 | void |
1072 | push_type_address_space (char *string) | |
1073 | { | |
1074 | push_type_int (address_space_name_to_int (string)); | |
1075 | } | |
1076 | ||
c5aa993b | 1077 | enum type_pieces |
fba45db2 | 1078 | pop_type (void) |
c906108c SS |
1079 | { |
1080 | if (type_stack_depth) | |
1081 | return type_stack[--type_stack_depth].piece; | |
1082 | return tp_end; | |
1083 | } | |
1084 | ||
1085 | int | |
fba45db2 | 1086 | pop_type_int (void) |
c906108c SS |
1087 | { |
1088 | if (type_stack_depth) | |
1089 | return type_stack[--type_stack_depth].int_val; | |
1090 | /* "Can't happen". */ | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | /* Pop the type stack and return the type which corresponds to FOLLOW_TYPE | |
1095 | as modified by all the stuff on the stack. */ | |
1096 | struct type * | |
fba45db2 | 1097 | follow_types (struct type *follow_type) |
c906108c SS |
1098 | { |
1099 | int done = 0; | |
2e2394a0 MS |
1100 | int make_const = 0; |
1101 | int make_volatile = 0; | |
47663de5 | 1102 | int make_addr_space = 0; |
c906108c SS |
1103 | int array_size; |
1104 | struct type *range_type; | |
1105 | ||
1106 | while (!done) | |
1107 | switch (pop_type ()) | |
1108 | { | |
1109 | case tp_end: | |
1110 | done = 1; | |
2e2394a0 MS |
1111 | if (make_const) |
1112 | follow_type = make_cv_type (make_const, | |
1113 | TYPE_VOLATILE (follow_type), | |
1114 | follow_type, 0); | |
1115 | if (make_volatile) | |
1116 | follow_type = make_cv_type (TYPE_CONST (follow_type), | |
1117 | make_volatile, | |
1118 | follow_type, 0); | |
47663de5 MS |
1119 | if (make_addr_space) |
1120 | follow_type = make_type_with_address_space (follow_type, | |
1121 | make_addr_space); | |
1122 | make_const = make_volatile = 0; | |
1123 | make_addr_space = 0; | |
2e2394a0 MS |
1124 | break; |
1125 | case tp_const: | |
1126 | make_const = 1; | |
1127 | break; | |
1128 | case tp_volatile: | |
1129 | make_volatile = 1; | |
c906108c | 1130 | break; |
47663de5 MS |
1131 | case tp_space_identifier: |
1132 | make_addr_space = pop_type_int (); | |
1133 | break; | |
c906108c SS |
1134 | case tp_pointer: |
1135 | follow_type = lookup_pointer_type (follow_type); | |
2e2394a0 MS |
1136 | if (make_const) |
1137 | follow_type = make_cv_type (make_const, | |
1138 | TYPE_VOLATILE (follow_type), | |
1139 | follow_type, 0); | |
1140 | if (make_volatile) | |
1141 | follow_type = make_cv_type (TYPE_CONST (follow_type), | |
1142 | make_volatile, | |
1143 | follow_type, 0); | |
47663de5 MS |
1144 | if (make_addr_space) |
1145 | follow_type = make_type_with_address_space (follow_type, | |
1146 | make_addr_space); | |
2e2394a0 | 1147 | make_const = make_volatile = 0; |
47663de5 | 1148 | make_addr_space = 0; |
c906108c SS |
1149 | break; |
1150 | case tp_reference: | |
1151 | follow_type = lookup_reference_type (follow_type); | |
2e2394a0 | 1152 | if (make_const) |
47663de5 MS |
1153 | follow_type = make_cv_type (make_const, |
1154 | TYPE_VOLATILE (follow_type), | |
1155 | follow_type, 0); | |
2e2394a0 | 1156 | if (make_volatile) |
47663de5 MS |
1157 | follow_type = make_cv_type (TYPE_CONST (follow_type), |
1158 | make_volatile, | |
1159 | follow_type, 0); | |
1160 | if (make_addr_space) | |
1161 | follow_type = make_type_with_address_space (follow_type, | |
1162 | make_addr_space); | |
2e2394a0 | 1163 | make_const = make_volatile = 0; |
47663de5 | 1164 | make_addr_space = 0; |
c906108c SS |
1165 | break; |
1166 | case tp_array: | |
1167 | array_size = pop_type_int (); | |
1168 | /* FIXME-type-allocation: need a way to free this type when we are | |
1169 | done with it. */ | |
1170 | range_type = | |
1171 | create_range_type ((struct type *) NULL, | |
1172 | builtin_type_int, 0, | |
1173 | array_size >= 0 ? array_size - 1 : 0); | |
1174 | follow_type = | |
1175 | create_array_type ((struct type *) NULL, | |
1176 | follow_type, range_type); | |
1177 | if (array_size < 0) | |
c5aa993b | 1178 | TYPE_ARRAY_UPPER_BOUND_TYPE (follow_type) |
c906108c SS |
1179 | = BOUND_CANNOT_BE_DETERMINED; |
1180 | break; | |
1181 | case tp_function: | |
1182 | /* FIXME-type-allocation: need a way to free this type when we are | |
1183 | done with it. */ | |
1184 | follow_type = lookup_function_type (follow_type); | |
1185 | break; | |
1186 | } | |
1187 | return follow_type; | |
1188 | } | |
1189 | \f | |
f461f5cf PM |
1190 | /* This function avoids direct calls to fprintf |
1191 | in the parser generated debug code. */ | |
1192 | void | |
1193 | parser_fprintf (FILE *x, const char *y, ...) | |
1194 | { | |
1195 | va_list args; | |
1196 | va_start (args, y); | |
1197 | if (x == stderr) | |
1198 | vfprintf_unfiltered (gdb_stderr, y, args); | |
1199 | else | |
1200 | { | |
1201 | fprintf_unfiltered (gdb_stderr, " Unknown FILE used.\n"); | |
1202 | vfprintf_unfiltered (gdb_stderr, y, args); | |
1203 | } | |
1204 | va_end (args); | |
1205 | } | |
1206 | ||
ac9a91a7 | 1207 | void |
fba45db2 | 1208 | _initialize_parse (void) |
ac9a91a7 JM |
1209 | { |
1210 | type_stack_size = 80; | |
1211 | type_stack_depth = 0; | |
1212 | type_stack = (union type_stack_elt *) | |
1213 | xmalloc (type_stack_size * sizeof (*type_stack)); | |
1214 | ||
85c07804 AC |
1215 | add_setshow_zinteger_cmd ("expression", class_maintenance, |
1216 | &expressiondebug, _("\ | |
1217 | Set expression debugging."), _("\ | |
1218 | Show expression debugging."), _("\ | |
1219 | When non-zero, the internal representation of expressions will be printed."), | |
1220 | NULL, | |
920d2a44 | 1221 | show_expressiondebug, |
85c07804 | 1222 | &setdebuglist, &showdebuglist); |
c906108c | 1223 | } |