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373a8247 | 1 | /* YACC parser for Pascal expressions, for GDB. |
32d0add0 | 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
373a8247 | 3 | |
5b1ba0e5 | 4 | This file is part of GDB. |
373a8247 | 5 | |
5b1ba0e5 NS |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
373a8247 | 10 | |
5b1ba0e5 NS |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
373a8247 | 15 | |
5b1ba0e5 NS |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
373a8247 PM |
18 | |
19 | /* This file is derived from c-exp.y */ | |
20 | ||
21 | /* Parse a Pascal expression from text in a string, | |
22 | and return the result as a struct expression pointer. | |
23 | That structure contains arithmetic operations in reverse polish, | |
24 | with constants represented by operations that are followed by special data. | |
25 | See expression.h for the details of the format. | |
26 | What is important here is that it can be built up sequentially | |
27 | during the process of parsing; the lower levels of the tree always | |
28 | come first in the result. | |
29 | ||
30 | Note that malloc's and realloc's in this file are transformed to | |
31 | xmalloc and xrealloc respectively by the same sed command in the | |
32 | makefile that remaps any other malloc/realloc inserted by the parser | |
33 | generator. Doing this with #defines and trying to control the interaction | |
34 | with include files (<malloc.h> and <stdlib.h> for example) just became | |
35 | too messy, particularly when such includes can be inserted at random | |
36 | times by the parser generator. */ | |
37 | ||
29f319b8 | 38 | /* Known bugs or limitations: |
373a8247 PM |
39 | - pascal string operations are not supported at all. |
40 | - there are some problems with boolean types. | |
41 | - Pascal type hexadecimal constants are not supported | |
42 | because they conflict with the internal variables format. | |
0df8b418 | 43 | Probably also lots of other problems, less well defined PM. */ |
373a8247 PM |
44 | %{ |
45 | ||
46 | #include "defs.h" | |
373a8247 PM |
47 | #include <ctype.h> |
48 | #include "expression.h" | |
49 | #include "value.h" | |
50 | #include "parser-defs.h" | |
51 | #include "language.h" | |
52 | #include "p-lang.h" | |
53 | #include "bfd.h" /* Required by objfiles.h. */ | |
54 | #include "symfile.h" /* Required by objfiles.h. */ | |
0df8b418 | 55 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols. */ |
fe898f56 | 56 | #include "block.h" |
d7561cbb | 57 | #include "completer.h" |
373a8247 | 58 | |
410a0ff2 | 59 | #define parse_type(ps) builtin_type (parse_gdbarch (ps)) |
3e79cecf | 60 | |
373a8247 PM |
61 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc), |
62 | as well as gratuitiously global symbol names, so we can have multiple | |
63 | yacc generated parsers in gdb. Note that these are only the variables | |
64 | produced by yacc. If other parser generators (bison, byacc, etc) produce | |
65 | additional global names that conflict at link time, then those parser | |
0df8b418 | 66 | generators need to be fixed instead of adding those names to this list. */ |
373a8247 PM |
67 | |
68 | #define yymaxdepth pascal_maxdepth | |
410a0ff2 | 69 | #define yyparse pascal_parse_internal |
373a8247 PM |
70 | #define yylex pascal_lex |
71 | #define yyerror pascal_error | |
72 | #define yylval pascal_lval | |
73 | #define yychar pascal_char | |
74 | #define yydebug pascal_debug | |
6ced1581 PM |
75 | #define yypact pascal_pact |
76 | #define yyr1 pascal_r1 | |
77 | #define yyr2 pascal_r2 | |
78 | #define yydef pascal_def | |
79 | #define yychk pascal_chk | |
80 | #define yypgo pascal_pgo | |
373a8247 PM |
81 | #define yyact pascal_act |
82 | #define yyexca pascal_exca | |
83 | #define yyerrflag pascal_errflag | |
84 | #define yynerrs pascal_nerrs | |
85 | #define yyps pascal_ps | |
86 | #define yypv pascal_pv | |
87 | #define yys pascal_s | |
88 | #define yy_yys pascal_yys | |
89 | #define yystate pascal_state | |
90 | #define yytmp pascal_tmp | |
91 | #define yyv pascal_v | |
92 | #define yy_yyv pascal_yyv | |
93 | #define yyval pascal_val | |
94 | #define yylloc pascal_lloc | |
95 | #define yyreds pascal_reds /* With YYDEBUG defined */ | |
96 | #define yytoks pascal_toks /* With YYDEBUG defined */ | |
06891d83 JT |
97 | #define yyname pascal_name /* With YYDEBUG defined */ |
98 | #define yyrule pascal_rule /* With YYDEBUG defined */ | |
373a8247 PM |
99 | #define yylhs pascal_yylhs |
100 | #define yylen pascal_yylen | |
101 | #define yydefred pascal_yydefred | |
102 | #define yydgoto pascal_yydgoto | |
103 | #define yysindex pascal_yysindex | |
104 | #define yyrindex pascal_yyrindex | |
105 | #define yygindex pascal_yygindex | |
106 | #define yytable pascal_yytable | |
107 | #define yycheck pascal_yycheck | |
a7aa5b8a MK |
108 | #define yyss pascal_yyss |
109 | #define yysslim pascal_yysslim | |
110 | #define yyssp pascal_yyssp | |
111 | #define yystacksize pascal_yystacksize | |
112 | #define yyvs pascal_yyvs | |
113 | #define yyvsp pascal_yyvsp | |
373a8247 PM |
114 | |
115 | #ifndef YYDEBUG | |
f461f5cf | 116 | #define YYDEBUG 1 /* Default to yydebug support */ |
373a8247 PM |
117 | #endif |
118 | ||
f461f5cf PM |
119 | #define YYFPRINTF parser_fprintf |
120 | ||
410a0ff2 SDJ |
121 | /* The state of the parser, used internally when we are parsing the |
122 | expression. */ | |
123 | ||
124 | static struct parser_state *pstate = NULL; | |
125 | ||
373a8247 PM |
126 | int yyparse (void); |
127 | ||
128 | static int yylex (void); | |
129 | ||
2021ad3a | 130 | void yyerror (char *); |
373a8247 | 131 | |
793156e6 | 132 | static char *uptok (const char *, int); |
373a8247 PM |
133 | %} |
134 | ||
135 | /* Although the yacc "value" of an expression is not used, | |
136 | since the result is stored in the structure being created, | |
137 | other node types do have values. */ | |
138 | ||
139 | %union | |
140 | { | |
141 | LONGEST lval; | |
142 | struct { | |
143 | LONGEST val; | |
144 | struct type *type; | |
145 | } typed_val_int; | |
146 | struct { | |
147 | DOUBLEST dval; | |
148 | struct type *type; | |
149 | } typed_val_float; | |
150 | struct symbol *sym; | |
151 | struct type *tval; | |
152 | struct stoken sval; | |
153 | struct ttype tsym; | |
154 | struct symtoken ssym; | |
155 | int voidval; | |
3977b71f | 156 | const struct block *bval; |
373a8247 PM |
157 | enum exp_opcode opcode; |
158 | struct internalvar *ivar; | |
159 | ||
160 | struct type **tvec; | |
161 | int *ivec; | |
162 | } | |
163 | ||
164 | %{ | |
165 | /* YYSTYPE gets defined by %union */ | |
410a0ff2 SDJ |
166 | static int parse_number (struct parser_state *, |
167 | const char *, int, int, YYSTYPE *); | |
9819c6c8 PM |
168 | |
169 | static struct type *current_type; | |
a5a44b53 | 170 | static struct internalvar *intvar; |
4ae0885a | 171 | static int leftdiv_is_integer; |
b9362cc7 AC |
172 | static void push_current_type (void); |
173 | static void pop_current_type (void); | |
9819c6c8 | 174 | static int search_field; |
373a8247 PM |
175 | %} |
176 | ||
9819c6c8 | 177 | %type <voidval> exp exp1 type_exp start normal_start variable qualified_name |
373a8247 PM |
178 | %type <tval> type typebase |
179 | /* %type <bval> block */ | |
180 | ||
181 | /* Fancy type parsing. */ | |
182 | %type <tval> ptype | |
183 | ||
184 | %token <typed_val_int> INT | |
185 | %token <typed_val_float> FLOAT | |
186 | ||
187 | /* Both NAME and TYPENAME tokens represent symbols in the input, | |
188 | and both convey their data as strings. | |
189 | But a TYPENAME is a string that happens to be defined as a typedef | |
190 | or builtin type name (such as int or char) | |
191 | and a NAME is any other symbol. | |
192 | Contexts where this distinction is not important can use the | |
193 | nonterminal "name", which matches either NAME or TYPENAME. */ | |
194 | ||
6ced1581 | 195 | %token <sval> STRING |
9819c6c8 | 196 | %token <sval> FIELDNAME |
a5a44b53 | 197 | %token <voidval> COMPLETE |
0df8b418 | 198 | %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */ |
373a8247 PM |
199 | %token <tsym> TYPENAME |
200 | %type <sval> name | |
201 | %type <ssym> name_not_typename | |
202 | ||
203 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, | |
204 | but which would parse as a valid number in the current input radix. | |
205 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
206 | turned into a name or into a number. */ | |
207 | ||
208 | %token <ssym> NAME_OR_INT | |
209 | ||
210 | %token STRUCT CLASS SIZEOF COLONCOLON | |
211 | %token ERROR | |
212 | ||
213 | /* Special type cases, put in to allow the parser to distinguish different | |
214 | legal basetypes. */ | |
215 | ||
216 | %token <voidval> VARIABLE | |
217 | ||
218 | ||
219 | /* Object pascal */ | |
220 | %token THIS | |
2692ddb3 | 221 | %token <lval> TRUEKEYWORD FALSEKEYWORD |
373a8247 PM |
222 | |
223 | %left ',' | |
224 | %left ABOVE_COMMA | |
225 | %right ASSIGN | |
226 | %left NOT | |
227 | %left OR | |
228 | %left XOR | |
229 | %left ANDAND | |
230 | %left '=' NOTEQUAL | |
231 | %left '<' '>' LEQ GEQ | |
232 | %left LSH RSH DIV MOD | |
233 | %left '@' | |
234 | %left '+' '-' | |
235 | %left '*' '/' | |
236 | %right UNARY INCREMENT DECREMENT | |
237 | %right ARROW '.' '[' '(' | |
29f319b8 | 238 | %left '^' |
373a8247 PM |
239 | %token <ssym> BLOCKNAME |
240 | %type <bval> block | |
241 | %left COLONCOLON | |
242 | ||
243 | \f | |
244 | %% | |
245 | ||
9819c6c8 | 246 | start : { current_type = NULL; |
a5a44b53 | 247 | intvar = NULL; |
9819c6c8 | 248 | search_field = 0; |
4ae0885a | 249 | leftdiv_is_integer = 0; |
9819c6c8 | 250 | } |
ef944135 TR |
251 | normal_start {} |
252 | ; | |
9819c6c8 PM |
253 | |
254 | normal_start : | |
255 | exp1 | |
373a8247 PM |
256 | | type_exp |
257 | ; | |
258 | ||
259 | type_exp: type | |
410a0ff2 SDJ |
260 | { write_exp_elt_opcode (pstate, OP_TYPE); |
261 | write_exp_elt_type (pstate, $1); | |
262 | write_exp_elt_opcode (pstate, OP_TYPE); | |
9819c6c8 | 263 | current_type = $1; } ; |
373a8247 PM |
264 | |
265 | /* Expressions, including the comma operator. */ | |
266 | exp1 : exp | |
267 | | exp1 ',' exp | |
410a0ff2 | 268 | { write_exp_elt_opcode (pstate, BINOP_COMMA); } |
373a8247 PM |
269 | ; |
270 | ||
271 | /* Expressions, not including the comma operator. */ | |
272 | exp : exp '^' %prec UNARY | |
410a0ff2 | 273 | { write_exp_elt_opcode (pstate, UNOP_IND); |
6ced1581 | 274 | if (current_type) |
9819c6c8 | 275 | current_type = TYPE_TARGET_TYPE (current_type); } |
ef944135 | 276 | ; |
373a8247 PM |
277 | |
278 | exp : '@' exp %prec UNARY | |
410a0ff2 | 279 | { write_exp_elt_opcode (pstate, UNOP_ADDR); |
9819c6c8 PM |
280 | if (current_type) |
281 | current_type = TYPE_POINTER_TYPE (current_type); } | |
ef944135 | 282 | ; |
373a8247 PM |
283 | |
284 | exp : '-' exp %prec UNARY | |
410a0ff2 | 285 | { write_exp_elt_opcode (pstate, UNOP_NEG); } |
373a8247 PM |
286 | ; |
287 | ||
288 | exp : NOT exp %prec UNARY | |
410a0ff2 | 289 | { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); } |
373a8247 PM |
290 | ; |
291 | ||
292 | exp : INCREMENT '(' exp ')' %prec UNARY | |
410a0ff2 | 293 | { write_exp_elt_opcode (pstate, UNOP_PREINCREMENT); } |
373a8247 PM |
294 | ; |
295 | ||
296 | exp : DECREMENT '(' exp ')' %prec UNARY | |
410a0ff2 | 297 | { write_exp_elt_opcode (pstate, UNOP_PREDECREMENT); } |
373a8247 PM |
298 | ; |
299 | ||
a5a44b53 PM |
300 | |
301 | field_exp : exp '.' %prec UNARY | |
6ced1581 | 302 | { search_field = 1; } |
a5a44b53 PM |
303 | ; |
304 | ||
6ced1581 | 305 | exp : field_exp FIELDNAME |
410a0ff2 SDJ |
306 | { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
307 | write_exp_string (pstate, $2); | |
308 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
6ced1581 | 309 | search_field = 0; |
a5a44b53 | 310 | if (current_type) |
6ced1581 | 311 | { |
a5a44b53 PM |
312 | while (TYPE_CODE (current_type) |
313 | == TYPE_CODE_PTR) | |
314 | current_type = | |
315 | TYPE_TARGET_TYPE (current_type); | |
316 | current_type = lookup_struct_elt_type ( | |
317 | current_type, $2.ptr, 0); | |
318 | } | |
319 | } | |
6ced1581 PM |
320 | ; |
321 | ||
a5a44b53 PM |
322 | |
323 | exp : field_exp name | |
410a0ff2 SDJ |
324 | { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
325 | write_exp_string (pstate, $2); | |
326 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
6ced1581 | 327 | search_field = 0; |
9819c6c8 | 328 | if (current_type) |
6ced1581 | 329 | { |
a5a44b53 PM |
330 | while (TYPE_CODE (current_type) |
331 | == TYPE_CODE_PTR) | |
332 | current_type = | |
333 | TYPE_TARGET_TYPE (current_type); | |
9819c6c8 | 334 | current_type = lookup_struct_elt_type ( |
a5a44b53 PM |
335 | current_type, $2.ptr, 0); |
336 | } | |
337 | } | |
338 | ; | |
8662d513 | 339 | exp : field_exp name COMPLETE |
410a0ff2 SDJ |
340 | { mark_struct_expression (pstate); |
341 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
342 | write_exp_string (pstate, $2); | |
343 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
8662d513 | 344 | ; |
a5a44b53 PM |
345 | exp : field_exp COMPLETE |
346 | { struct stoken s; | |
410a0ff2 SDJ |
347 | mark_struct_expression (pstate); |
348 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
a5a44b53 PM |
349 | s.ptr = ""; |
350 | s.length = 0; | |
410a0ff2 SDJ |
351 | write_exp_string (pstate, s); |
352 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
a5a44b53 PM |
353 | ; |
354 | ||
9819c6c8 | 355 | exp : exp '[' |
0df8b418 | 356 | /* We need to save the current_type value. */ |
0d5cff50 | 357 | { const char *arrayname; |
9819c6c8 PM |
358 | int arrayfieldindex; |
359 | arrayfieldindex = is_pascal_string_type ( | |
360 | current_type, NULL, NULL, | |
6ced1581 PM |
361 | NULL, NULL, &arrayname); |
362 | if (arrayfieldindex) | |
9819c6c8 PM |
363 | { |
364 | struct stoken stringsval; | |
d7561cbb KS |
365 | char *buf; |
366 | ||
367 | buf = alloca (strlen (arrayname) + 1); | |
368 | stringsval.ptr = buf; | |
9819c6c8 | 369 | stringsval.length = strlen (arrayname); |
d7561cbb | 370 | strcpy (buf, arrayname); |
9819c6c8 | 371 | current_type = TYPE_FIELD_TYPE (current_type, |
6ced1581 | 372 | arrayfieldindex - 1); |
410a0ff2 SDJ |
373 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
374 | write_exp_string (pstate, stringsval); | |
375 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
9819c6c8 PM |
376 | } |
377 | push_current_type (); } | |
378 | exp1 ']' | |
379 | { pop_current_type (); | |
410a0ff2 | 380 | write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT); |
9819c6c8 PM |
381 | if (current_type) |
382 | current_type = TYPE_TARGET_TYPE (current_type); } | |
ef944135 | 383 | ; |
373a8247 PM |
384 | |
385 | exp : exp '(' | |
386 | /* This is to save the value of arglist_len | |
387 | being accumulated by an outer function call. */ | |
9819c6c8 PM |
388 | { push_current_type (); |
389 | start_arglist (); } | |
373a8247 | 390 | arglist ')' %prec ARROW |
410a0ff2 SDJ |
391 | { write_exp_elt_opcode (pstate, OP_FUNCALL); |
392 | write_exp_elt_longcst (pstate, | |
393 | (LONGEST) end_arglist ()); | |
394 | write_exp_elt_opcode (pstate, OP_FUNCALL); | |
4ae0885a PM |
395 | pop_current_type (); |
396 | if (current_type) | |
397 | current_type = TYPE_TARGET_TYPE (current_type); | |
398 | } | |
373a8247 PM |
399 | ; |
400 | ||
401 | arglist : | |
402 | | exp | |
403 | { arglist_len = 1; } | |
404 | | arglist ',' exp %prec ABOVE_COMMA | |
405 | { arglist_len++; } | |
406 | ; | |
407 | ||
408 | exp : type '(' exp ')' %prec UNARY | |
fd0e9d45 PM |
409 | { if (current_type) |
410 | { | |
411 | /* Allow automatic dereference of classes. */ | |
412 | if ((TYPE_CODE (current_type) == TYPE_CODE_PTR) | |
4753d33b DE |
413 | && (TYPE_CODE (TYPE_TARGET_TYPE (current_type)) == TYPE_CODE_STRUCT) |
414 | && (TYPE_CODE ($1) == TYPE_CODE_STRUCT)) | |
410a0ff2 | 415 | write_exp_elt_opcode (pstate, UNOP_IND); |
fd0e9d45 | 416 | } |
410a0ff2 SDJ |
417 | write_exp_elt_opcode (pstate, UNOP_CAST); |
418 | write_exp_elt_type (pstate, $1); | |
419 | write_exp_elt_opcode (pstate, UNOP_CAST); | |
9819c6c8 | 420 | current_type = $1; } |
373a8247 PM |
421 | ; |
422 | ||
423 | exp : '(' exp1 ')' | |
424 | { } | |
425 | ; | |
426 | ||
427 | /* Binary operators in order of decreasing precedence. */ | |
428 | ||
429 | exp : exp '*' exp | |
410a0ff2 | 430 | { write_exp_elt_opcode (pstate, BINOP_MUL); } |
373a8247 PM |
431 | ; |
432 | ||
4ae0885a PM |
433 | exp : exp '/' { |
434 | if (current_type && is_integral_type (current_type)) | |
435 | leftdiv_is_integer = 1; | |
6ced1581 | 436 | } |
4ae0885a | 437 | exp |
6ced1581 | 438 | { |
4ae0885a PM |
439 | if (leftdiv_is_integer && current_type |
440 | && is_integral_type (current_type)) | |
441 | { | |
410a0ff2 SDJ |
442 | write_exp_elt_opcode (pstate, UNOP_CAST); |
443 | write_exp_elt_type (pstate, | |
444 | parse_type (pstate) | |
445 | ->builtin_long_double); | |
446 | current_type | |
447 | = parse_type (pstate)->builtin_long_double; | |
448 | write_exp_elt_opcode (pstate, UNOP_CAST); | |
4ae0885a PM |
449 | leftdiv_is_integer = 0; |
450 | } | |
451 | ||
410a0ff2 | 452 | write_exp_elt_opcode (pstate, BINOP_DIV); |
4ae0885a | 453 | } |
373a8247 PM |
454 | ; |
455 | ||
456 | exp : exp DIV exp | |
410a0ff2 | 457 | { write_exp_elt_opcode (pstate, BINOP_INTDIV); } |
373a8247 PM |
458 | ; |
459 | ||
460 | exp : exp MOD exp | |
410a0ff2 | 461 | { write_exp_elt_opcode (pstate, BINOP_REM); } |
373a8247 PM |
462 | ; |
463 | ||
464 | exp : exp '+' exp | |
410a0ff2 | 465 | { write_exp_elt_opcode (pstate, BINOP_ADD); } |
373a8247 PM |
466 | ; |
467 | ||
468 | exp : exp '-' exp | |
410a0ff2 | 469 | { write_exp_elt_opcode (pstate, BINOP_SUB); } |
373a8247 PM |
470 | ; |
471 | ||
472 | exp : exp LSH exp | |
410a0ff2 | 473 | { write_exp_elt_opcode (pstate, BINOP_LSH); } |
373a8247 PM |
474 | ; |
475 | ||
476 | exp : exp RSH exp | |
410a0ff2 | 477 | { write_exp_elt_opcode (pstate, BINOP_RSH); } |
373a8247 PM |
478 | ; |
479 | ||
480 | exp : exp '=' exp | |
410a0ff2 SDJ |
481 | { write_exp_elt_opcode (pstate, BINOP_EQUAL); |
482 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 483 | } |
373a8247 PM |
484 | ; |
485 | ||
486 | exp : exp NOTEQUAL exp | |
410a0ff2 SDJ |
487 | { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); |
488 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 489 | } |
373a8247 PM |
490 | ; |
491 | ||
492 | exp : exp LEQ exp | |
410a0ff2 SDJ |
493 | { write_exp_elt_opcode (pstate, BINOP_LEQ); |
494 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 495 | } |
373a8247 PM |
496 | ; |
497 | ||
498 | exp : exp GEQ exp | |
410a0ff2 SDJ |
499 | { write_exp_elt_opcode (pstate, BINOP_GEQ); |
500 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 501 | } |
373a8247 PM |
502 | ; |
503 | ||
504 | exp : exp '<' exp | |
410a0ff2 SDJ |
505 | { write_exp_elt_opcode (pstate, BINOP_LESS); |
506 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 507 | } |
373a8247 PM |
508 | ; |
509 | ||
510 | exp : exp '>' exp | |
410a0ff2 SDJ |
511 | { write_exp_elt_opcode (pstate, BINOP_GTR); |
512 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 513 | } |
373a8247 PM |
514 | ; |
515 | ||
516 | exp : exp ANDAND exp | |
410a0ff2 | 517 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_AND); } |
373a8247 PM |
518 | ; |
519 | ||
520 | exp : exp XOR exp | |
410a0ff2 | 521 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_XOR); } |
373a8247 PM |
522 | ; |
523 | ||
524 | exp : exp OR exp | |
410a0ff2 | 525 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_IOR); } |
373a8247 PM |
526 | ; |
527 | ||
528 | exp : exp ASSIGN exp | |
410a0ff2 | 529 | { write_exp_elt_opcode (pstate, BINOP_ASSIGN); } |
373a8247 PM |
530 | ; |
531 | ||
2692ddb3 | 532 | exp : TRUEKEYWORD |
410a0ff2 SDJ |
533 | { write_exp_elt_opcode (pstate, OP_BOOL); |
534 | write_exp_elt_longcst (pstate, (LONGEST) $1); | |
535 | current_type = parse_type (pstate)->builtin_bool; | |
536 | write_exp_elt_opcode (pstate, OP_BOOL); } | |
373a8247 PM |
537 | ; |
538 | ||
2692ddb3 | 539 | exp : FALSEKEYWORD |
410a0ff2 SDJ |
540 | { write_exp_elt_opcode (pstate, OP_BOOL); |
541 | write_exp_elt_longcst (pstate, (LONGEST) $1); | |
542 | current_type = parse_type (pstate)->builtin_bool; | |
543 | write_exp_elt_opcode (pstate, OP_BOOL); } | |
373a8247 PM |
544 | ; |
545 | ||
546 | exp : INT | |
410a0ff2 SDJ |
547 | { write_exp_elt_opcode (pstate, OP_LONG); |
548 | write_exp_elt_type (pstate, $1.type); | |
4ae0885a | 549 | current_type = $1.type; |
410a0ff2 SDJ |
550 | write_exp_elt_longcst (pstate, (LONGEST)($1.val)); |
551 | write_exp_elt_opcode (pstate, OP_LONG); } | |
373a8247 PM |
552 | ; |
553 | ||
554 | exp : NAME_OR_INT | |
555 | { YYSTYPE val; | |
410a0ff2 | 556 | parse_number (pstate, $1.stoken.ptr, |
0df8b418 | 557 | $1.stoken.length, 0, &val); |
410a0ff2 SDJ |
558 | write_exp_elt_opcode (pstate, OP_LONG); |
559 | write_exp_elt_type (pstate, val.typed_val_int.type); | |
4ae0885a | 560 | current_type = val.typed_val_int.type; |
410a0ff2 | 561 | write_exp_elt_longcst (pstate, (LONGEST) |
0df8b418 | 562 | val.typed_val_int.val); |
410a0ff2 | 563 | write_exp_elt_opcode (pstate, OP_LONG); |
373a8247 PM |
564 | } |
565 | ; | |
566 | ||
567 | ||
568 | exp : FLOAT | |
410a0ff2 SDJ |
569 | { write_exp_elt_opcode (pstate, OP_DOUBLE); |
570 | write_exp_elt_type (pstate, $1.type); | |
4ae0885a | 571 | current_type = $1.type; |
410a0ff2 SDJ |
572 | write_exp_elt_dblcst (pstate, $1.dval); |
573 | write_exp_elt_opcode (pstate, OP_DOUBLE); } | |
373a8247 PM |
574 | ; |
575 | ||
576 | exp : variable | |
577 | ; | |
578 | ||
579 | exp : VARIABLE | |
a5a44b53 PM |
580 | /* Already written by write_dollar_variable. |
581 | Handle current_type. */ | |
582 | { if (intvar) { | |
583 | struct value * val, * mark; | |
584 | ||
585 | mark = value_mark (); | |
410a0ff2 | 586 | val = value_of_internalvar (parse_gdbarch (pstate), |
a5a44b53 PM |
587 | intvar); |
588 | current_type = value_type (val); | |
589 | value_release_to_mark (mark); | |
590 | } | |
591 | } | |
592 | ; | |
373a8247 PM |
593 | |
594 | exp : SIZEOF '(' type ')' %prec UNARY | |
410a0ff2 SDJ |
595 | { write_exp_elt_opcode (pstate, OP_LONG); |
596 | write_exp_elt_type (pstate, | |
597 | parse_type (pstate)->builtin_int); | |
598 | current_type = parse_type (pstate)->builtin_int; | |
f168693b | 599 | $3 = check_typedef ($3); |
410a0ff2 SDJ |
600 | write_exp_elt_longcst (pstate, |
601 | (LONGEST) TYPE_LENGTH ($3)); | |
602 | write_exp_elt_opcode (pstate, OP_LONG); } | |
373a8247 PM |
603 | ; |
604 | ||
28e176a6 | 605 | exp : SIZEOF '(' exp ')' %prec UNARY |
410a0ff2 SDJ |
606 | { write_exp_elt_opcode (pstate, UNOP_SIZEOF); |
607 | current_type = parse_type (pstate)->builtin_int; } | |
6ced1581 | 608 | |
373a8247 PM |
609 | exp : STRING |
610 | { /* C strings are converted into array constants with | |
611 | an explicit null byte added at the end. Thus | |
612 | the array upper bound is the string length. | |
613 | There is no such thing in C as a completely empty | |
0df8b418 | 614 | string. */ |
d7561cbb KS |
615 | const char *sp = $1.ptr; int count = $1.length; |
616 | ||
373a8247 PM |
617 | while (count-- > 0) |
618 | { | |
410a0ff2 SDJ |
619 | write_exp_elt_opcode (pstate, OP_LONG); |
620 | write_exp_elt_type (pstate, | |
621 | parse_type (pstate) | |
622 | ->builtin_char); | |
623 | write_exp_elt_longcst (pstate, | |
624 | (LONGEST) (*sp++)); | |
625 | write_exp_elt_opcode (pstate, OP_LONG); | |
373a8247 | 626 | } |
410a0ff2 SDJ |
627 | write_exp_elt_opcode (pstate, OP_LONG); |
628 | write_exp_elt_type (pstate, | |
629 | parse_type (pstate) | |
630 | ->builtin_char); | |
631 | write_exp_elt_longcst (pstate, (LONGEST)'\0'); | |
632 | write_exp_elt_opcode (pstate, OP_LONG); | |
633 | write_exp_elt_opcode (pstate, OP_ARRAY); | |
634 | write_exp_elt_longcst (pstate, (LONGEST) 0); | |
635 | write_exp_elt_longcst (pstate, | |
636 | (LONGEST) ($1.length)); | |
637 | write_exp_elt_opcode (pstate, OP_ARRAY); } | |
373a8247 PM |
638 | ; |
639 | ||
640 | /* Object pascal */ | |
641 | exp : THIS | |
6ced1581 | 642 | { |
fd0e9d45 PM |
643 | struct value * this_val; |
644 | struct type * this_type; | |
410a0ff2 SDJ |
645 | write_exp_elt_opcode (pstate, OP_THIS); |
646 | write_exp_elt_opcode (pstate, OP_THIS); | |
0df8b418 | 647 | /* We need type of this. */ |
410a0ff2 SDJ |
648 | this_val |
649 | = value_of_this_silent (parse_language (pstate)); | |
fd0e9d45 | 650 | if (this_val) |
04624583 | 651 | this_type = value_type (this_val); |
fd0e9d45 PM |
652 | else |
653 | this_type = NULL; | |
654 | if (this_type) | |
655 | { | |
656 | if (TYPE_CODE (this_type) == TYPE_CODE_PTR) | |
657 | { | |
658 | this_type = TYPE_TARGET_TYPE (this_type); | |
410a0ff2 | 659 | write_exp_elt_opcode (pstate, UNOP_IND); |
fd0e9d45 PM |
660 | } |
661 | } | |
6ced1581 | 662 | |
fd0e9d45 PM |
663 | current_type = this_type; |
664 | } | |
373a8247 PM |
665 | ; |
666 | ||
667 | /* end of object pascal. */ | |
668 | ||
669 | block : BLOCKNAME | |
670 | { | |
d12307c1 PMR |
671 | if ($1.sym.symbol != 0) |
672 | $$ = SYMBOL_BLOCK_VALUE ($1.sym.symbol); | |
373a8247 PM |
673 | else |
674 | { | |
675 | struct symtab *tem = | |
676 | lookup_symtab (copy_name ($1.stoken)); | |
677 | if (tem) | |
439247b6 | 678 | $$ = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (tem), |
0df8b418 | 679 | STATIC_BLOCK); |
373a8247 | 680 | else |
001083c6 | 681 | error (_("No file or function \"%s\"."), |
373a8247 PM |
682 | copy_name ($1.stoken)); |
683 | } | |
684 | } | |
685 | ; | |
686 | ||
687 | block : block COLONCOLON name | |
688 | { struct symbol *tem | |
689 | = lookup_symbol (copy_name ($3), $1, | |
d12307c1 PMR |
690 | VAR_DOMAIN, NULL).symbol; |
691 | ||
373a8247 | 692 | if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK) |
001083c6 | 693 | error (_("No function \"%s\" in specified context."), |
373a8247 PM |
694 | copy_name ($3)); |
695 | $$ = SYMBOL_BLOCK_VALUE (tem); } | |
696 | ; | |
697 | ||
698 | variable: block COLONCOLON name | |
d12307c1 PMR |
699 | { struct block_symbol sym; |
700 | ||
373a8247 | 701 | sym = lookup_symbol (copy_name ($3), $1, |
1993b719 | 702 | VAR_DOMAIN, NULL); |
d12307c1 | 703 | if (sym.symbol == 0) |
001083c6 | 704 | error (_("No symbol \"%s\" in specified context."), |
373a8247 PM |
705 | copy_name ($3)); |
706 | ||
410a0ff2 | 707 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
d12307c1 PMR |
708 | write_exp_elt_block (pstate, sym.block); |
709 | write_exp_elt_sym (pstate, sym.symbol); | |
410a0ff2 | 710 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); } |
373a8247 PM |
711 | ; |
712 | ||
713 | qualified_name: typebase COLONCOLON name | |
714 | { | |
715 | struct type *type = $1; | |
d12307c1 | 716 | |
373a8247 PM |
717 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
718 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
001083c6 | 719 | error (_("`%s' is not defined as an aggregate type."), |
373a8247 PM |
720 | TYPE_NAME (type)); |
721 | ||
410a0ff2 SDJ |
722 | write_exp_elt_opcode (pstate, OP_SCOPE); |
723 | write_exp_elt_type (pstate, type); | |
724 | write_exp_string (pstate, $3); | |
725 | write_exp_elt_opcode (pstate, OP_SCOPE); | |
373a8247 PM |
726 | } |
727 | ; | |
728 | ||
729 | variable: qualified_name | |
730 | | COLONCOLON name | |
731 | { | |
732 | char *name = copy_name ($2); | |
733 | struct symbol *sym; | |
7c7b6655 | 734 | struct bound_minimal_symbol msymbol; |
373a8247 PM |
735 | |
736 | sym = | |
737 | lookup_symbol (name, (const struct block *) NULL, | |
d12307c1 | 738 | VAR_DOMAIN, NULL).symbol; |
373a8247 PM |
739 | if (sym) |
740 | { | |
410a0ff2 SDJ |
741 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
742 | write_exp_elt_block (pstate, NULL); | |
743 | write_exp_elt_sym (pstate, sym); | |
744 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); | |
373a8247 PM |
745 | break; |
746 | } | |
747 | ||
7c7b6655 TT |
748 | msymbol = lookup_bound_minimal_symbol (name); |
749 | if (msymbol.minsym != NULL) | |
410a0ff2 | 750 | write_exp_msymbol (pstate, msymbol); |
0df8b418 MS |
751 | else if (!have_full_symbols () |
752 | && !have_partial_symbols ()) | |
001083c6 PM |
753 | error (_("No symbol table is loaded. " |
754 | "Use the \"file\" command.")); | |
373a8247 | 755 | else |
001083c6 | 756 | error (_("No symbol \"%s\" in current context."), |
0df8b418 | 757 | name); |
373a8247 PM |
758 | } |
759 | ; | |
760 | ||
761 | variable: name_not_typename | |
d12307c1 | 762 | { struct block_symbol sym = $1.sym; |
373a8247 | 763 | |
d12307c1 | 764 | if (sym.symbol) |
373a8247 | 765 | { |
d12307c1 | 766 | if (symbol_read_needs_frame (sym.symbol)) |
373a8247 | 767 | { |
0b058123 | 768 | if (innermost_block == 0 |
d12307c1 | 769 | || contained_in (sym.block, |
0b058123 | 770 | innermost_block)) |
d12307c1 | 771 | innermost_block = sym.block; |
373a8247 PM |
772 | } |
773 | ||
410a0ff2 | 774 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
373a8247 PM |
775 | /* We want to use the selected frame, not |
776 | another more inner frame which happens to | |
777 | be in the same block. */ | |
410a0ff2 | 778 | write_exp_elt_block (pstate, NULL); |
d12307c1 | 779 | write_exp_elt_sym (pstate, sym.symbol); |
410a0ff2 | 780 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
d12307c1 | 781 | current_type = sym.symbol->type; } |
373a8247 PM |
782 | else if ($1.is_a_field_of_this) |
783 | { | |
9819c6c8 PM |
784 | struct value * this_val; |
785 | struct type * this_type; | |
373a8247 PM |
786 | /* Object pascal: it hangs off of `this'. Must |
787 | not inadvertently convert from a method call | |
788 | to data ref. */ | |
0b058123 | 789 | if (innermost_block == 0 |
d12307c1 | 790 | || contained_in (sym.block, |
0b058123 | 791 | innermost_block)) |
d12307c1 | 792 | innermost_block = sym.block; |
410a0ff2 SDJ |
793 | write_exp_elt_opcode (pstate, OP_THIS); |
794 | write_exp_elt_opcode (pstate, OP_THIS); | |
795 | write_exp_elt_opcode (pstate, STRUCTOP_PTR); | |
796 | write_exp_string (pstate, $1.stoken); | |
797 | write_exp_elt_opcode (pstate, STRUCTOP_PTR); | |
0df8b418 | 798 | /* We need type of this. */ |
410a0ff2 SDJ |
799 | this_val |
800 | = value_of_this_silent (parse_language (pstate)); | |
9819c6c8 | 801 | if (this_val) |
04624583 | 802 | this_type = value_type (this_val); |
9819c6c8 PM |
803 | else |
804 | this_type = NULL; | |
805 | if (this_type) | |
806 | current_type = lookup_struct_elt_type ( | |
807 | this_type, | |
020cc13c | 808 | copy_name ($1.stoken), 0); |
9819c6c8 | 809 | else |
6ced1581 | 810 | current_type = NULL; |
373a8247 PM |
811 | } |
812 | else | |
813 | { | |
7c7b6655 | 814 | struct bound_minimal_symbol msymbol; |
710122da | 815 | char *arg = copy_name ($1.stoken); |
373a8247 PM |
816 | |
817 | msymbol = | |
7c7b6655 TT |
818 | lookup_bound_minimal_symbol (arg); |
819 | if (msymbol.minsym != NULL) | |
410a0ff2 | 820 | write_exp_msymbol (pstate, msymbol); |
0df8b418 MS |
821 | else if (!have_full_symbols () |
822 | && !have_partial_symbols ()) | |
001083c6 PM |
823 | error (_("No symbol table is loaded. " |
824 | "Use the \"file\" command.")); | |
373a8247 | 825 | else |
001083c6 | 826 | error (_("No symbol \"%s\" in current context."), |
373a8247 PM |
827 | copy_name ($1.stoken)); |
828 | } | |
829 | } | |
830 | ; | |
831 | ||
832 | ||
833 | ptype : typebase | |
834 | ; | |
835 | ||
836 | /* We used to try to recognize more pointer to member types here, but | |
837 | that didn't work (shift/reduce conflicts meant that these rules never | |
838 | got executed). The problem is that | |
839 | int (foo::bar::baz::bizzle) | |
840 | is a function type but | |
841 | int (foo::bar::baz::bizzle::*) | |
842 | is a pointer to member type. Stroustrup loses again! */ | |
843 | ||
844 | type : ptype | |
373a8247 PM |
845 | ; |
846 | ||
847 | typebase /* Implements (approximately): (type-qualifier)* type-specifier */ | |
fd0e9d45 PM |
848 | : '^' typebase |
849 | { $$ = lookup_pointer_type ($2); } | |
850 | | TYPENAME | |
373a8247 PM |
851 | { $$ = $1.type; } |
852 | | STRUCT name | |
853 | { $$ = lookup_struct (copy_name ($2), | |
854 | expression_context_block); } | |
855 | | CLASS name | |
856 | { $$ = lookup_struct (copy_name ($2), | |
857 | expression_context_block); } | |
858 | /* "const" and "volatile" are curently ignored. A type qualifier | |
859 | after the type is handled in the ptype rule. I think these could | |
860 | be too. */ | |
861 | ; | |
862 | ||
863 | name : NAME { $$ = $1.stoken; } | |
864 | | BLOCKNAME { $$ = $1.stoken; } | |
865 | | TYPENAME { $$ = $1.stoken; } | |
866 | | NAME_OR_INT { $$ = $1.stoken; } | |
867 | ; | |
868 | ||
869 | name_not_typename : NAME | |
870 | | BLOCKNAME | |
871 | /* These would be useful if name_not_typename was useful, but it is just | |
872 | a fake for "variable", so these cause reduce/reduce conflicts because | |
873 | the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable, | |
874 | =exp) or just an exp. If name_not_typename was ever used in an lvalue | |
875 | context where only a name could occur, this might be useful. | |
876 | | NAME_OR_INT | |
877 | */ | |
878 | ; | |
879 | ||
880 | %% | |
881 | ||
882 | /* Take care of parsing a number (anything that starts with a digit). | |
883 | Set yylval and return the token type; update lexptr. | |
884 | LEN is the number of characters in it. */ | |
885 | ||
886 | /*** Needs some error checking for the float case ***/ | |
887 | ||
888 | static int | |
410a0ff2 SDJ |
889 | parse_number (struct parser_state *par_state, |
890 | const char *p, int len, int parsed_float, YYSTYPE *putithere) | |
373a8247 PM |
891 | { |
892 | /* FIXME: Shouldn't these be unsigned? We don't deal with negative values | |
893 | here, and we do kind of silly things like cast to unsigned. */ | |
710122da DC |
894 | LONGEST n = 0; |
895 | LONGEST prevn = 0; | |
373a8247 PM |
896 | ULONGEST un; |
897 | ||
710122da DC |
898 | int i = 0; |
899 | int c; | |
900 | int base = input_radix; | |
373a8247 PM |
901 | int unsigned_p = 0; |
902 | ||
903 | /* Number of "L" suffixes encountered. */ | |
904 | int long_p = 0; | |
905 | ||
906 | /* We have found a "L" or "U" suffix. */ | |
907 | int found_suffix = 0; | |
908 | ||
909 | ULONGEST high_bit; | |
910 | struct type *signed_type; | |
911 | struct type *unsigned_type; | |
912 | ||
913 | if (parsed_float) | |
914 | { | |
410a0ff2 | 915 | if (! parse_c_float (parse_gdbarch (par_state), p, len, |
d30f5e1f DE |
916 | &putithere->typed_val_float.dval, |
917 | &putithere->typed_val_float.type)) | |
373a8247 | 918 | return ERROR; |
373a8247 PM |
919 | return FLOAT; |
920 | } | |
921 | ||
0df8b418 | 922 | /* Handle base-switching prefixes 0x, 0t, 0d, 0. */ |
373a8247 PM |
923 | if (p[0] == '0') |
924 | switch (p[1]) | |
925 | { | |
926 | case 'x': | |
927 | case 'X': | |
928 | if (len >= 3) | |
929 | { | |
930 | p += 2; | |
931 | base = 16; | |
932 | len -= 2; | |
933 | } | |
934 | break; | |
935 | ||
936 | case 't': | |
937 | case 'T': | |
938 | case 'd': | |
939 | case 'D': | |
940 | if (len >= 3) | |
941 | { | |
942 | p += 2; | |
943 | base = 10; | |
944 | len -= 2; | |
945 | } | |
946 | break; | |
947 | ||
948 | default: | |
949 | base = 8; | |
950 | break; | |
951 | } | |
952 | ||
953 | while (len-- > 0) | |
954 | { | |
955 | c = *p++; | |
956 | if (c >= 'A' && c <= 'Z') | |
957 | c += 'a' - 'A'; | |
958 | if (c != 'l' && c != 'u') | |
959 | n *= base; | |
960 | if (c >= '0' && c <= '9') | |
961 | { | |
962 | if (found_suffix) | |
963 | return ERROR; | |
964 | n += i = c - '0'; | |
965 | } | |
966 | else | |
967 | { | |
968 | if (base > 10 && c >= 'a' && c <= 'f') | |
969 | { | |
970 | if (found_suffix) | |
971 | return ERROR; | |
972 | n += i = c - 'a' + 10; | |
973 | } | |
974 | else if (c == 'l') | |
975 | { | |
976 | ++long_p; | |
977 | found_suffix = 1; | |
978 | } | |
979 | else if (c == 'u') | |
980 | { | |
981 | unsigned_p = 1; | |
982 | found_suffix = 1; | |
983 | } | |
984 | else | |
985 | return ERROR; /* Char not a digit */ | |
986 | } | |
987 | if (i >= base) | |
0df8b418 | 988 | return ERROR; /* Invalid digit in this base. */ |
373a8247 PM |
989 | |
990 | /* Portably test for overflow (only works for nonzero values, so make | |
991 | a second check for zero). FIXME: Can't we just make n and prevn | |
992 | unsigned and avoid this? */ | |
993 | if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) | |
0df8b418 | 994 | unsigned_p = 1; /* Try something unsigned. */ |
373a8247 PM |
995 | |
996 | /* Portably test for unsigned overflow. | |
997 | FIXME: This check is wrong; for example it doesn't find overflow | |
998 | on 0x123456789 when LONGEST is 32 bits. */ | |
999 | if (c != 'l' && c != 'u' && n != 0) | |
6ced1581 | 1000 | { |
373a8247 | 1001 | if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n)) |
001083c6 | 1002 | error (_("Numeric constant too large.")); |
373a8247 PM |
1003 | } |
1004 | prevn = n; | |
1005 | } | |
1006 | ||
1007 | /* An integer constant is an int, a long, or a long long. An L | |
1008 | suffix forces it to be long; an LL suffix forces it to be long | |
1009 | long. If not forced to a larger size, it gets the first type of | |
1010 | the above that it fits in. To figure out whether it fits, we | |
1011 | shift it right and see whether anything remains. Note that we | |
1012 | can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one | |
1013 | operation, because many compilers will warn about such a shift | |
9a76efb6 UW |
1014 | (which always produces a zero result). Sometimes gdbarch_int_bit |
1015 | or gdbarch_long_bit will be that big, sometimes not. To deal with | |
373a8247 PM |
1016 | the case where it is we just always shift the value more than |
1017 | once, with fewer bits each time. */ | |
1018 | ||
1019 | un = (ULONGEST)n >> 2; | |
1020 | if (long_p == 0 | |
410a0ff2 | 1021 | && (un >> (gdbarch_int_bit (parse_gdbarch (par_state)) - 2)) == 0) |
373a8247 | 1022 | { |
410a0ff2 SDJ |
1023 | high_bit |
1024 | = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch (par_state)) - 1); | |
373a8247 PM |
1025 | |
1026 | /* A large decimal (not hex or octal) constant (between INT_MAX | |
1027 | and UINT_MAX) is a long or unsigned long, according to ANSI, | |
1028 | never an unsigned int, but this code treats it as unsigned | |
1029 | int. This probably should be fixed. GCC gives a warning on | |
1030 | such constants. */ | |
1031 | ||
410a0ff2 SDJ |
1032 | unsigned_type = parse_type (par_state)->builtin_unsigned_int; |
1033 | signed_type = parse_type (par_state)->builtin_int; | |
373a8247 PM |
1034 | } |
1035 | else if (long_p <= 1 | |
410a0ff2 | 1036 | && (un >> (gdbarch_long_bit (parse_gdbarch (par_state)) - 2)) == 0) |
373a8247 | 1037 | { |
410a0ff2 SDJ |
1038 | high_bit |
1039 | = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch (par_state)) - 1); | |
1040 | unsigned_type = parse_type (par_state)->builtin_unsigned_long; | |
1041 | signed_type = parse_type (par_state)->builtin_long; | |
373a8247 PM |
1042 | } |
1043 | else | |
1044 | { | |
7451d027 | 1045 | int shift; |
9a76efb6 | 1046 | if (sizeof (ULONGEST) * HOST_CHAR_BIT |
410a0ff2 | 1047 | < gdbarch_long_long_bit (parse_gdbarch (par_state))) |
373a8247 | 1048 | /* A long long does not fit in a LONGEST. */ |
7451d027 AC |
1049 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); |
1050 | else | |
410a0ff2 | 1051 | shift = (gdbarch_long_long_bit (parse_gdbarch (par_state)) - 1); |
7451d027 | 1052 | high_bit = (ULONGEST) 1 << shift; |
410a0ff2 SDJ |
1053 | unsigned_type = parse_type (par_state)->builtin_unsigned_long_long; |
1054 | signed_type = parse_type (par_state)->builtin_long_long; | |
373a8247 PM |
1055 | } |
1056 | ||
1057 | putithere->typed_val_int.val = n; | |
1058 | ||
1059 | /* If the high bit of the worked out type is set then this number | |
0df8b418 | 1060 | has to be unsigned. */ |
373a8247 PM |
1061 | |
1062 | if (unsigned_p || (n & high_bit)) | |
1063 | { | |
1064 | putithere->typed_val_int.type = unsigned_type; | |
1065 | } | |
1066 | else | |
1067 | { | |
1068 | putithere->typed_val_int.type = signed_type; | |
1069 | } | |
1070 | ||
1071 | return INT; | |
1072 | } | |
1073 | ||
9819c6c8 PM |
1074 | |
1075 | struct type_push | |
1076 | { | |
1077 | struct type *stored; | |
1078 | struct type_push *next; | |
1079 | }; | |
1080 | ||
1081 | static struct type_push *tp_top = NULL; | |
1082 | ||
b9362cc7 AC |
1083 | static void |
1084 | push_current_type (void) | |
9819c6c8 PM |
1085 | { |
1086 | struct type_push *tpnew; | |
1087 | tpnew = (struct type_push *) malloc (sizeof (struct type_push)); | |
1088 | tpnew->next = tp_top; | |
1089 | tpnew->stored = current_type; | |
1090 | current_type = NULL; | |
6ced1581 | 1091 | tp_top = tpnew; |
9819c6c8 PM |
1092 | } |
1093 | ||
b9362cc7 AC |
1094 | static void |
1095 | pop_current_type (void) | |
9819c6c8 PM |
1096 | { |
1097 | struct type_push *tp = tp_top; | |
1098 | if (tp) | |
1099 | { | |
1100 | current_type = tp->stored; | |
1101 | tp_top = tp->next; | |
bbe2ba60 | 1102 | free (tp); |
9819c6c8 PM |
1103 | } |
1104 | } | |
1105 | ||
373a8247 PM |
1106 | struct token |
1107 | { | |
fe978cb0 | 1108 | char *oper; |
373a8247 PM |
1109 | int token; |
1110 | enum exp_opcode opcode; | |
1111 | }; | |
1112 | ||
1113 | static const struct token tokentab3[] = | |
1114 | { | |
1115 | {"shr", RSH, BINOP_END}, | |
1116 | {"shl", LSH, BINOP_END}, | |
1117 | {"and", ANDAND, BINOP_END}, | |
1118 | {"div", DIV, BINOP_END}, | |
1119 | {"not", NOT, BINOP_END}, | |
1120 | {"mod", MOD, BINOP_END}, | |
1121 | {"inc", INCREMENT, BINOP_END}, | |
1122 | {"dec", DECREMENT, BINOP_END}, | |
1123 | {"xor", XOR, BINOP_END} | |
1124 | }; | |
1125 | ||
1126 | static const struct token tokentab2[] = | |
1127 | { | |
1128 | {"or", OR, BINOP_END}, | |
1129 | {"<>", NOTEQUAL, BINOP_END}, | |
1130 | {"<=", LEQ, BINOP_END}, | |
1131 | {">=", GEQ, BINOP_END}, | |
9819c6c8 PM |
1132 | {":=", ASSIGN, BINOP_END}, |
1133 | {"::", COLONCOLON, BINOP_END} }; | |
373a8247 | 1134 | |
0df8b418 MS |
1135 | /* Allocate uppercased var: */ |
1136 | /* make an uppercased copy of tokstart. */ | |
d04550a6 | 1137 | static char * |
793156e6 | 1138 | uptok (const char *tokstart, int namelen) |
373a8247 PM |
1139 | { |
1140 | int i; | |
1141 | char *uptokstart = (char *)malloc(namelen+1); | |
1142 | for (i = 0;i <= namelen;i++) | |
1143 | { | |
1144 | if ((tokstart[i]>='a' && tokstart[i]<='z')) | |
1145 | uptokstart[i] = tokstart[i]-('a'-'A'); | |
1146 | else | |
1147 | uptokstart[i] = tokstart[i]; | |
1148 | } | |
1149 | uptokstart[namelen]='\0'; | |
1150 | return uptokstart; | |
1151 | } | |
373a8247 | 1152 | |
a5a44b53 | 1153 | /* Read one token, getting characters through lexptr. */ |
373a8247 PM |
1154 | |
1155 | static int | |
eeae04df | 1156 | yylex (void) |
373a8247 PM |
1157 | { |
1158 | int c; | |
1159 | int namelen; | |
1160 | unsigned int i; | |
793156e6 | 1161 | const char *tokstart; |
373a8247 | 1162 | char *uptokstart; |
793156e6 | 1163 | const char *tokptr; |
d3d6d173 | 1164 | int explen, tempbufindex; |
373a8247 PM |
1165 | static char *tempbuf; |
1166 | static int tempbufsize; | |
6ced1581 | 1167 | |
373a8247 PM |
1168 | retry: |
1169 | ||
24467a86 PM |
1170 | prev_lexptr = lexptr; |
1171 | ||
793156e6 | 1172 | tokstart = lexptr; |
d3d6d173 | 1173 | explen = strlen (lexptr); |
d7561cbb | 1174 | |
373a8247 | 1175 | /* See if it is a special token of length 3. */ |
d3d6d173 PM |
1176 | if (explen > 2) |
1177 | for (i = 0; i < sizeof (tokentab3) / sizeof (tokentab3[0]); i++) | |
fe978cb0 PA |
1178 | if (strncasecmp (tokstart, tokentab3[i].oper, 3) == 0 |
1179 | && (!isalpha (tokentab3[i].oper[0]) || explen == 3 | |
0df8b418 MS |
1180 | || (!isalpha (tokstart[3]) |
1181 | && !isdigit (tokstart[3]) && tokstart[3] != '_'))) | |
d3d6d173 PM |
1182 | { |
1183 | lexptr += 3; | |
1184 | yylval.opcode = tokentab3[i].opcode; | |
1185 | return tokentab3[i].token; | |
1186 | } | |
373a8247 PM |
1187 | |
1188 | /* See if it is a special token of length 2. */ | |
d3d6d173 PM |
1189 | if (explen > 1) |
1190 | for (i = 0; i < sizeof (tokentab2) / sizeof (tokentab2[0]); i++) | |
fe978cb0 PA |
1191 | if (strncasecmp (tokstart, tokentab2[i].oper, 2) == 0 |
1192 | && (!isalpha (tokentab2[i].oper[0]) || explen == 2 | |
0df8b418 MS |
1193 | || (!isalpha (tokstart[2]) |
1194 | && !isdigit (tokstart[2]) && tokstart[2] != '_'))) | |
d3d6d173 PM |
1195 | { |
1196 | lexptr += 2; | |
1197 | yylval.opcode = tokentab2[i].opcode; | |
1198 | return tokentab2[i].token; | |
1199 | } | |
373a8247 PM |
1200 | |
1201 | switch (c = *tokstart) | |
1202 | { | |
1203 | case 0: | |
8662d513 | 1204 | if (search_field && parse_completion) |
a5a44b53 PM |
1205 | return COMPLETE; |
1206 | else | |
1207 | return 0; | |
373a8247 PM |
1208 | |
1209 | case ' ': | |
1210 | case '\t': | |
1211 | case '\n': | |
1212 | lexptr++; | |
1213 | goto retry; | |
1214 | ||
1215 | case '\'': | |
1216 | /* We either have a character constant ('0' or '\177' for example) | |
1217 | or we have a quoted symbol reference ('foo(int,int)' in object pascal | |
0df8b418 | 1218 | for example). */ |
373a8247 PM |
1219 | lexptr++; |
1220 | c = *lexptr++; | |
1221 | if (c == '\\') | |
410a0ff2 | 1222 | c = parse_escape (parse_gdbarch (pstate), &lexptr); |
373a8247 | 1223 | else if (c == '\'') |
001083c6 | 1224 | error (_("Empty character constant.")); |
373a8247 PM |
1225 | |
1226 | yylval.typed_val_int.val = c; | |
410a0ff2 | 1227 | yylval.typed_val_int.type = parse_type (pstate)->builtin_char; |
373a8247 PM |
1228 | |
1229 | c = *lexptr++; | |
1230 | if (c != '\'') | |
1231 | { | |
1232 | namelen = skip_quoted (tokstart) - tokstart; | |
1233 | if (namelen > 2) | |
1234 | { | |
1235 | lexptr = tokstart + namelen; | |
1236 | if (lexptr[-1] != '\'') | |
001083c6 | 1237 | error (_("Unmatched single quote.")); |
373a8247 PM |
1238 | namelen -= 2; |
1239 | tokstart++; | |
1240 | uptokstart = uptok(tokstart,namelen); | |
1241 | goto tryname; | |
1242 | } | |
001083c6 | 1243 | error (_("Invalid character constant.")); |
373a8247 PM |
1244 | } |
1245 | return INT; | |
1246 | ||
1247 | case '(': | |
1248 | paren_depth++; | |
1249 | lexptr++; | |
1250 | return c; | |
1251 | ||
1252 | case ')': | |
1253 | if (paren_depth == 0) | |
1254 | return 0; | |
1255 | paren_depth--; | |
1256 | lexptr++; | |
1257 | return c; | |
1258 | ||
1259 | case ',': | |
1260 | if (comma_terminates && paren_depth == 0) | |
1261 | return 0; | |
1262 | lexptr++; | |
1263 | return c; | |
1264 | ||
1265 | case '.': | |
1266 | /* Might be a floating point number. */ | |
1267 | if (lexptr[1] < '0' || lexptr[1] > '9') | |
a5a44b53 | 1268 | { |
a5a44b53 PM |
1269 | goto symbol; /* Nope, must be a symbol. */ |
1270 | } | |
1271 | ||
373a8247 PM |
1272 | /* FALL THRU into number case. */ |
1273 | ||
1274 | case '0': | |
1275 | case '1': | |
1276 | case '2': | |
1277 | case '3': | |
1278 | case '4': | |
1279 | case '5': | |
1280 | case '6': | |
1281 | case '7': | |
1282 | case '8': | |
1283 | case '9': | |
1284 | { | |
1285 | /* It's a number. */ | |
1286 | int got_dot = 0, got_e = 0, toktype; | |
793156e6 | 1287 | const char *p = tokstart; |
373a8247 PM |
1288 | int hex = input_radix > 10; |
1289 | ||
1290 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
1291 | { | |
1292 | p += 2; | |
1293 | hex = 1; | |
1294 | } | |
0df8b418 MS |
1295 | else if (c == '0' && (p[1]=='t' || p[1]=='T' |
1296 | || p[1]=='d' || p[1]=='D')) | |
373a8247 PM |
1297 | { |
1298 | p += 2; | |
1299 | hex = 0; | |
1300 | } | |
1301 | ||
1302 | for (;; ++p) | |
1303 | { | |
1304 | /* This test includes !hex because 'e' is a valid hex digit | |
1305 | and thus does not indicate a floating point number when | |
1306 | the radix is hex. */ | |
1307 | if (!hex && !got_e && (*p == 'e' || *p == 'E')) | |
1308 | got_dot = got_e = 1; | |
1309 | /* This test does not include !hex, because a '.' always indicates | |
1310 | a decimal floating point number regardless of the radix. */ | |
1311 | else if (!got_dot && *p == '.') | |
1312 | got_dot = 1; | |
1313 | else if (got_e && (p[-1] == 'e' || p[-1] == 'E') | |
1314 | && (*p == '-' || *p == '+')) | |
1315 | /* This is the sign of the exponent, not the end of the | |
1316 | number. */ | |
1317 | continue; | |
1318 | /* We will take any letters or digits. parse_number will | |
1319 | complain if past the radix, or if L or U are not final. */ | |
1320 | else if ((*p < '0' || *p > '9') | |
1321 | && ((*p < 'a' || *p > 'z') | |
1322 | && (*p < 'A' || *p > 'Z'))) | |
1323 | break; | |
1324 | } | |
410a0ff2 | 1325 | toktype = parse_number (pstate, tokstart, |
0df8b418 | 1326 | p - tokstart, got_dot | got_e, &yylval); |
373a8247 PM |
1327 | if (toktype == ERROR) |
1328 | { | |
1329 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
1330 | ||
1331 | memcpy (err_copy, tokstart, p - tokstart); | |
1332 | err_copy[p - tokstart] = 0; | |
001083c6 | 1333 | error (_("Invalid number \"%s\"."), err_copy); |
373a8247 PM |
1334 | } |
1335 | lexptr = p; | |
1336 | return toktype; | |
1337 | } | |
1338 | ||
1339 | case '+': | |
1340 | case '-': | |
1341 | case '*': | |
1342 | case '/': | |
1343 | case '|': | |
1344 | case '&': | |
1345 | case '^': | |
1346 | case '~': | |
1347 | case '!': | |
1348 | case '@': | |
1349 | case '<': | |
1350 | case '>': | |
1351 | case '[': | |
1352 | case ']': | |
1353 | case '?': | |
1354 | case ':': | |
1355 | case '=': | |
1356 | case '{': | |
1357 | case '}': | |
1358 | symbol: | |
1359 | lexptr++; | |
1360 | return c; | |
1361 | ||
1362 | case '"': | |
1363 | ||
1364 | /* Build the gdb internal form of the input string in tempbuf, | |
1365 | translating any standard C escape forms seen. Note that the | |
1366 | buffer is null byte terminated *only* for the convenience of | |
1367 | debugging gdb itself and printing the buffer contents when | |
1368 | the buffer contains no embedded nulls. Gdb does not depend | |
1369 | upon the buffer being null byte terminated, it uses the length | |
1370 | string instead. This allows gdb to handle C strings (as well | |
0df8b418 | 1371 | as strings in other languages) with embedded null bytes. */ |
373a8247 PM |
1372 | |
1373 | tokptr = ++tokstart; | |
1374 | tempbufindex = 0; | |
1375 | ||
1376 | do { | |
1377 | /* Grow the static temp buffer if necessary, including allocating | |
0df8b418 | 1378 | the first one on demand. */ |
373a8247 PM |
1379 | if (tempbufindex + 1 >= tempbufsize) |
1380 | { | |
1381 | tempbuf = (char *) realloc (tempbuf, tempbufsize += 64); | |
1382 | } | |
9819c6c8 | 1383 | |
373a8247 PM |
1384 | switch (*tokptr) |
1385 | { | |
1386 | case '\0': | |
1387 | case '"': | |
0df8b418 | 1388 | /* Do nothing, loop will terminate. */ |
373a8247 PM |
1389 | break; |
1390 | case '\\': | |
793156e6 | 1391 | ++tokptr; |
410a0ff2 | 1392 | c = parse_escape (parse_gdbarch (pstate), &tokptr); |
793156e6 KS |
1393 | if (c == -1) |
1394 | { | |
1395 | continue; | |
1396 | } | |
1397 | tempbuf[tempbufindex++] = c; | |
373a8247 PM |
1398 | break; |
1399 | default: | |
1400 | tempbuf[tempbufindex++] = *tokptr++; | |
1401 | break; | |
1402 | } | |
1403 | } while ((*tokptr != '"') && (*tokptr != '\0')); | |
1404 | if (*tokptr++ != '"') | |
1405 | { | |
001083c6 | 1406 | error (_("Unterminated string in expression.")); |
373a8247 | 1407 | } |
0df8b418 | 1408 | tempbuf[tempbufindex] = '\0'; /* See note above. */ |
373a8247 PM |
1409 | yylval.sval.ptr = tempbuf; |
1410 | yylval.sval.length = tempbufindex; | |
1411 | lexptr = tokptr; | |
1412 | return (STRING); | |
1413 | } | |
1414 | ||
1415 | if (!(c == '_' || c == '$' | |
1416 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
1417 | /* We must have come across a bad character (e.g. ';'). */ | |
001083c6 | 1418 | error (_("Invalid character '%c' in expression."), c); |
373a8247 PM |
1419 | |
1420 | /* It's a name. See how long it is. */ | |
1421 | namelen = 0; | |
1422 | for (c = tokstart[namelen]; | |
1423 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
1424 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');) | |
1425 | { | |
1426 | /* Template parameter lists are part of the name. | |
1427 | FIXME: This mishandles `print $a<4&&$a>3'. */ | |
1428 | if (c == '<') | |
1429 | { | |
1430 | int i = namelen; | |
1431 | int nesting_level = 1; | |
1432 | while (tokstart[++i]) | |
1433 | { | |
1434 | if (tokstart[i] == '<') | |
1435 | nesting_level++; | |
1436 | else if (tokstart[i] == '>') | |
1437 | { | |
1438 | if (--nesting_level == 0) | |
1439 | break; | |
1440 | } | |
1441 | } | |
1442 | if (tokstart[i] == '>') | |
1443 | namelen = i; | |
1444 | else | |
1445 | break; | |
1446 | } | |
1447 | ||
0df8b418 | 1448 | /* do NOT uppercase internals because of registers !!! */ |
373a8247 PM |
1449 | c = tokstart[++namelen]; |
1450 | } | |
1451 | ||
1452 | uptokstart = uptok(tokstart,namelen); | |
1453 | ||
1454 | /* The token "if" terminates the expression and is NOT | |
1455 | removed from the input stream. */ | |
1456 | if (namelen == 2 && uptokstart[0] == 'I' && uptokstart[1] == 'F') | |
1457 | { | |
7877e977 | 1458 | free (uptokstart); |
373a8247 PM |
1459 | return 0; |
1460 | } | |
1461 | ||
1462 | lexptr += namelen; | |
1463 | ||
1464 | tryname: | |
1465 | ||
1466 | /* Catch specific keywords. Should be done with a data structure. */ | |
1467 | switch (namelen) | |
1468 | { | |
1469 | case 6: | |
0b058123 | 1470 | if (strcmp (uptokstart, "OBJECT") == 0) |
7877e977 MS |
1471 | { |
1472 | free (uptokstart); | |
1473 | return CLASS; | |
1474 | } | |
0b058123 | 1475 | if (strcmp (uptokstart, "RECORD") == 0) |
7877e977 MS |
1476 | { |
1477 | free (uptokstart); | |
1478 | return STRUCT; | |
1479 | } | |
0b058123 | 1480 | if (strcmp (uptokstart, "SIZEOF") == 0) |
7877e977 MS |
1481 | { |
1482 | free (uptokstart); | |
1483 | return SIZEOF; | |
1484 | } | |
373a8247 PM |
1485 | break; |
1486 | case 5: | |
0b058123 | 1487 | if (strcmp (uptokstart, "CLASS") == 0) |
7877e977 MS |
1488 | { |
1489 | free (uptokstart); | |
1490 | return CLASS; | |
1491 | } | |
0b058123 | 1492 | if (strcmp (uptokstart, "FALSE") == 0) |
373a8247 PM |
1493 | { |
1494 | yylval.lval = 0; | |
7877e977 | 1495 | free (uptokstart); |
2692ddb3 | 1496 | return FALSEKEYWORD; |
373a8247 PM |
1497 | } |
1498 | break; | |
1499 | case 4: | |
0b058123 | 1500 | if (strcmp (uptokstart, "TRUE") == 0) |
373a8247 PM |
1501 | { |
1502 | yylval.lval = 1; | |
7877e977 | 1503 | free (uptokstart); |
2692ddb3 | 1504 | return TRUEKEYWORD; |
373a8247 | 1505 | } |
0b058123 | 1506 | if (strcmp (uptokstart, "SELF") == 0) |
373a8247 | 1507 | { |
0df8b418 MS |
1508 | /* Here we search for 'this' like |
1509 | inserted in FPC stabs debug info. */ | |
8343f86c | 1510 | static const char this_name[] = "this"; |
373a8247 PM |
1511 | |
1512 | if (lookup_symbol (this_name, expression_context_block, | |
d12307c1 | 1513 | VAR_DOMAIN, NULL).symbol) |
7877e977 MS |
1514 | { |
1515 | free (uptokstart); | |
1516 | return THIS; | |
1517 | } | |
373a8247 PM |
1518 | } |
1519 | break; | |
1520 | default: | |
1521 | break; | |
1522 | } | |
1523 | ||
1524 | yylval.sval.ptr = tokstart; | |
1525 | yylval.sval.length = namelen; | |
1526 | ||
1527 | if (*tokstart == '$') | |
1528 | { | |
793156e6 KS |
1529 | char *tmp; |
1530 | ||
373a8247 PM |
1531 | /* $ is the normal prefix for pascal hexadecimal values |
1532 | but this conflicts with the GDB use for debugger variables | |
1533 | so in expression to enter hexadecimal values | |
1534 | we still need to use C syntax with 0xff */ | |
410a0ff2 | 1535 | write_dollar_variable (pstate, yylval.sval); |
793156e6 KS |
1536 | tmp = alloca (namelen + 1); |
1537 | memcpy (tmp, tokstart, namelen); | |
1538 | tmp[namelen] = '\0'; | |
1539 | intvar = lookup_only_internalvar (tmp + 1); | |
7877e977 | 1540 | free (uptokstart); |
373a8247 PM |
1541 | return VARIABLE; |
1542 | } | |
1543 | ||
1544 | /* Use token-type BLOCKNAME for symbols that happen to be defined as | |
1545 | functions or symtabs. If this is not so, then ... | |
1546 | Use token-type TYPENAME for symbols that happen to be defined | |
1547 | currently as names of types; NAME for other symbols. | |
1548 | The caller is not constrained to care about the distinction. */ | |
1549 | { | |
1550 | char *tmp = copy_name (yylval.sval); | |
1551 | struct symbol *sym; | |
1993b719 | 1552 | struct field_of_this_result is_a_field_of_this; |
9819c6c8 | 1553 | int is_a_field = 0; |
373a8247 PM |
1554 | int hextype; |
1555 | ||
8aae4344 | 1556 | is_a_field_of_this.type = NULL; |
9819c6c8 | 1557 | if (search_field && current_type) |
0df8b418 | 1558 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
8662d513 | 1559 | if (is_a_field) |
9819c6c8 PM |
1560 | sym = NULL; |
1561 | else | |
1562 | sym = lookup_symbol (tmp, expression_context_block, | |
d12307c1 | 1563 | VAR_DOMAIN, &is_a_field_of_this).symbol; |
94a716bf | 1564 | /* second chance uppercased (as Free Pascal does). */ |
1993b719 | 1565 | if (!sym && is_a_field_of_this.type == NULL && !is_a_field) |
373a8247 | 1566 | { |
94a716bf | 1567 | for (i = 0; i <= namelen; i++) |
373a8247 | 1568 | { |
94a716bf | 1569 | if ((tmp[i] >= 'a' && tmp[i] <= 'z')) |
373a8247 | 1570 | tmp[i] -= ('a'-'A'); |
373a8247 | 1571 | } |
9819c6c8 | 1572 | if (search_field && current_type) |
0df8b418 | 1573 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
8662d513 | 1574 | if (is_a_field) |
9819c6c8 PM |
1575 | sym = NULL; |
1576 | else | |
1577 | sym = lookup_symbol (tmp, expression_context_block, | |
d12307c1 | 1578 | VAR_DOMAIN, &is_a_field_of_this).symbol; |
94a716bf PM |
1579 | } |
1580 | /* Third chance Capitalized (as GPC does). */ | |
1993b719 | 1581 | if (!sym && is_a_field_of_this.type == NULL && !is_a_field) |
94a716bf PM |
1582 | { |
1583 | for (i = 0; i <= namelen; i++) | |
1584 | { | |
1585 | if (i == 0) | |
1586 | { | |
1587 | if ((tmp[i] >= 'a' && tmp[i] <= 'z')) | |
1588 | tmp[i] -= ('a'-'A'); | |
1589 | } | |
1590 | else | |
1591 | if ((tmp[i] >= 'A' && tmp[i] <= 'Z')) | |
1592 | tmp[i] -= ('A'-'a'); | |
1593 | } | |
9819c6c8 | 1594 | if (search_field && current_type) |
0df8b418 | 1595 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
8662d513 | 1596 | if (is_a_field) |
9819c6c8 PM |
1597 | sym = NULL; |
1598 | else | |
1599 | sym = lookup_symbol (tmp, expression_context_block, | |
d12307c1 | 1600 | VAR_DOMAIN, &is_a_field_of_this).symbol; |
373a8247 | 1601 | } |
9819c6c8 | 1602 | |
8aae4344 | 1603 | if (is_a_field || (is_a_field_of_this.type != NULL)) |
9819c6c8 PM |
1604 | { |
1605 | tempbuf = (char *) realloc (tempbuf, namelen + 1); | |
793156e6 KS |
1606 | strncpy (tempbuf, tmp, namelen); |
1607 | tempbuf [namelen] = 0; | |
9819c6c8 | 1608 | yylval.sval.ptr = tempbuf; |
6ced1581 | 1609 | yylval.sval.length = namelen; |
d12307c1 PMR |
1610 | yylval.ssym.sym.symbol = NULL; |
1611 | yylval.ssym.sym.block = NULL; | |
7877e977 | 1612 | free (uptokstart); |
8aae4344 PM |
1613 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
1614 | if (is_a_field) | |
1615 | return FIELDNAME; | |
1616 | else | |
1617 | return NAME; | |
6ced1581 | 1618 | } |
373a8247 PM |
1619 | /* Call lookup_symtab, not lookup_partial_symtab, in case there are |
1620 | no psymtabs (coff, xcoff, or some future change to blow away the | |
1621 | psymtabs once once symbols are read). */ | |
0b058123 PM |
1622 | if ((sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
1623 | || lookup_symtab (tmp)) | |
373a8247 | 1624 | { |
d12307c1 PMR |
1625 | yylval.ssym.sym.symbol = sym; |
1626 | yylval.ssym.sym.block = NULL; | |
1993b719 | 1627 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
7877e977 | 1628 | free (uptokstart); |
373a8247 PM |
1629 | return BLOCKNAME; |
1630 | } | |
1631 | if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
1632 | { | |
1633 | #if 1 | |
1634 | /* Despite the following flaw, we need to keep this code enabled. | |
1635 | Because we can get called from check_stub_method, if we don't | |
1636 | handle nested types then it screws many operations in any | |
1637 | program which uses nested types. */ | |
1638 | /* In "A::x", if x is a member function of A and there happens | |
1639 | to be a type (nested or not, since the stabs don't make that | |
1640 | distinction) named x, then this code incorrectly thinks we | |
1641 | are dealing with nested types rather than a member function. */ | |
1642 | ||
d7561cbb KS |
1643 | const char *p; |
1644 | const char *namestart; | |
373a8247 PM |
1645 | struct symbol *best_sym; |
1646 | ||
1647 | /* Look ahead to detect nested types. This probably should be | |
1648 | done in the grammar, but trying seemed to introduce a lot | |
1649 | of shift/reduce and reduce/reduce conflicts. It's possible | |
1650 | that it could be done, though. Or perhaps a non-grammar, but | |
1651 | less ad hoc, approach would work well. */ | |
1652 | ||
1653 | /* Since we do not currently have any way of distinguishing | |
1654 | a nested type from a non-nested one (the stabs don't tell | |
1655 | us whether a type is nested), we just ignore the | |
1656 | containing type. */ | |
1657 | ||
1658 | p = lexptr; | |
1659 | best_sym = sym; | |
1660 | while (1) | |
1661 | { | |
1662 | /* Skip whitespace. */ | |
1663 | while (*p == ' ' || *p == '\t' || *p == '\n') | |
1664 | ++p; | |
1665 | if (*p == ':' && p[1] == ':') | |
1666 | { | |
1667 | /* Skip the `::'. */ | |
1668 | p += 2; | |
1669 | /* Skip whitespace. */ | |
1670 | while (*p == ' ' || *p == '\t' || *p == '\n') | |
1671 | ++p; | |
1672 | namestart = p; | |
1673 | while (*p == '_' || *p == '$' || (*p >= '0' && *p <= '9') | |
1674 | || (*p >= 'a' && *p <= 'z') | |
1675 | || (*p >= 'A' && *p <= 'Z')) | |
1676 | ++p; | |
1677 | if (p != namestart) | |
1678 | { | |
1679 | struct symbol *cur_sym; | |
1680 | /* As big as the whole rest of the expression, which is | |
1681 | at least big enough. */ | |
1682 | char *ncopy = alloca (strlen (tmp)+strlen (namestart)+3); | |
1683 | char *tmp1; | |
1684 | ||
1685 | tmp1 = ncopy; | |
1686 | memcpy (tmp1, tmp, strlen (tmp)); | |
1687 | tmp1 += strlen (tmp); | |
1688 | memcpy (tmp1, "::", 2); | |
1689 | tmp1 += 2; | |
1690 | memcpy (tmp1, namestart, p - namestart); | |
1691 | tmp1[p - namestart] = '\0'; | |
1692 | cur_sym = lookup_symbol (ncopy, expression_context_block, | |
d12307c1 | 1693 | VAR_DOMAIN, NULL).symbol; |
373a8247 PM |
1694 | if (cur_sym) |
1695 | { | |
1696 | if (SYMBOL_CLASS (cur_sym) == LOC_TYPEDEF) | |
1697 | { | |
1698 | best_sym = cur_sym; | |
1699 | lexptr = p; | |
1700 | } | |
1701 | else | |
1702 | break; | |
1703 | } | |
1704 | else | |
1705 | break; | |
1706 | } | |
1707 | else | |
1708 | break; | |
1709 | } | |
1710 | else | |
1711 | break; | |
1712 | } | |
1713 | ||
1714 | yylval.tsym.type = SYMBOL_TYPE (best_sym); | |
1715 | #else /* not 0 */ | |
1716 | yylval.tsym.type = SYMBOL_TYPE (sym); | |
1717 | #endif /* not 0 */ | |
7877e977 | 1718 | free (uptokstart); |
373a8247 PM |
1719 | return TYPENAME; |
1720 | } | |
54a5b07d | 1721 | yylval.tsym.type |
46b0da17 DE |
1722 | = language_lookup_primitive_type (parse_language (pstate), |
1723 | parse_gdbarch (pstate), tmp); | |
54a5b07d | 1724 | if (yylval.tsym.type != NULL) |
7877e977 MS |
1725 | { |
1726 | free (uptokstart); | |
1727 | return TYPENAME; | |
1728 | } | |
373a8247 PM |
1729 | |
1730 | /* Input names that aren't symbols but ARE valid hex numbers, | |
1731 | when the input radix permits them, can be names or numbers | |
1732 | depending on the parse. Note we support radixes > 16 here. */ | |
0b058123 PM |
1733 | if (!sym |
1734 | && ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) | |
1735 | || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10))) | |
373a8247 PM |
1736 | { |
1737 | YYSTYPE newlval; /* Its value is ignored. */ | |
410a0ff2 | 1738 | hextype = parse_number (pstate, tokstart, namelen, 0, &newlval); |
373a8247 PM |
1739 | if (hextype == INT) |
1740 | { | |
d12307c1 PMR |
1741 | yylval.ssym.sym.symbol = sym; |
1742 | yylval.ssym.sym.block = NULL; | |
1993b719 | 1743 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
7877e977 | 1744 | free (uptokstart); |
373a8247 PM |
1745 | return NAME_OR_INT; |
1746 | } | |
1747 | } | |
1748 | ||
1749 | free(uptokstart); | |
0df8b418 | 1750 | /* Any other kind of symbol. */ |
d12307c1 PMR |
1751 | yylval.ssym.sym.symbol = sym; |
1752 | yylval.ssym.sym.block = NULL; | |
373a8247 PM |
1753 | return NAME; |
1754 | } | |
1755 | } | |
1756 | ||
410a0ff2 SDJ |
1757 | int |
1758 | pascal_parse (struct parser_state *par_state) | |
1759 | { | |
1760 | int result; | |
1761 | struct cleanup *c = make_cleanup_clear_parser_state (&pstate); | |
1762 | ||
1763 | /* Setting up the parser state. */ | |
1764 | gdb_assert (par_state != NULL); | |
1765 | pstate = par_state; | |
1766 | ||
1767 | result = yyparse (); | |
1768 | do_cleanups (c); | |
1769 | return result; | |
1770 | } | |
1771 | ||
373a8247 | 1772 | void |
d04550a6 | 1773 | yyerror (char *msg) |
373a8247 | 1774 | { |
24467a86 PM |
1775 | if (prev_lexptr) |
1776 | lexptr = prev_lexptr; | |
1777 | ||
001083c6 | 1778 | error (_("A %s in expression, near `%s'."), (msg ? msg : "error"), lexptr); |
373a8247 | 1779 | } |