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3ed9baed IB |
1 | /* YACC parser for D expressions, for GDB. |
2 | ||
3666a048 | 3 | Copyright (C) 2014-2021 Free Software Foundation, Inc. |
3ed9baed IB |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | /* This file is derived from c-exp.y, jv-exp.y. */ | |
21 | ||
22 | /* Parse a D expression from text in a string, | |
23 | and return the result as a struct expression pointer. | |
24 | That structure contains arithmetic operations in reverse polish, | |
25 | with constants represented by operations that are followed by special data. | |
26 | See expression.h for the details of the format. | |
27 | What is important here is that it can be built up sequentially | |
28 | during the process of parsing; the lower levels of the tree always | |
29 | come first in the result. | |
30 | ||
31 | Note that malloc's and realloc's in this file are transformed to | |
32 | xmalloc and xrealloc respectively by the same sed command in the | |
33 | makefile that remaps any other malloc/realloc inserted by the parser | |
34 | generator. Doing this with #defines and trying to control the interaction | |
35 | with include files (<malloc.h> and <stdlib.h> for example) just became | |
36 | too messy, particularly when such includes can be inserted at random | |
37 | times by the parser generator. */ | |
38 | ||
39 | %{ | |
40 | ||
41 | #include "defs.h" | |
3ed9baed IB |
42 | #include <ctype.h> |
43 | #include "expression.h" | |
44 | #include "value.h" | |
45 | #include "parser-defs.h" | |
46 | #include "language.h" | |
47 | #include "c-lang.h" | |
48 | #include "d-lang.h" | |
49 | #include "bfd.h" /* Required by objfiles.h. */ | |
50 | #include "symfile.h" /* Required by objfiles.h. */ | |
51 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols */ | |
52 | #include "charset.h" | |
53 | #include "block.h" | |
dac43e32 | 54 | #include "type-stack.h" |
9412fdcc | 55 | #include "expop.h" |
3ed9baed | 56 | |
fa9f5be6 TT |
57 | #define parse_type(ps) builtin_type (ps->gdbarch ()) |
58 | #define parse_d_type(ps) builtin_d_type (ps->gdbarch ()) | |
3ed9baed | 59 | |
b3f11165 PA |
60 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, |
61 | etc). */ | |
62 | #define GDB_YY_REMAP_PREFIX d_ | |
63 | #include "yy-remap.h" | |
3ed9baed IB |
64 | |
65 | /* The state of the parser, used internally when we are parsing the | |
66 | expression. */ | |
67 | ||
68 | static struct parser_state *pstate = NULL; | |
69 | ||
dac43e32 TT |
70 | /* The current type stack. */ |
71 | static struct type_stack *type_stack; | |
72 | ||
3ed9baed IB |
73 | int yyparse (void); |
74 | ||
75 | static int yylex (void); | |
76 | ||
69d340c6 | 77 | static void yyerror (const char *); |
3ed9baed | 78 | |
7f3706eb IB |
79 | static int type_aggregate_p (struct type *); |
80 | ||
9412fdcc TT |
81 | using namespace expr; |
82 | ||
3ed9baed IB |
83 | %} |
84 | ||
85 | /* Although the yacc "value" of an expression is not used, | |
86 | since the result is stored in the structure being created, | |
87 | other node types do have values. */ | |
88 | ||
89 | %union | |
90 | { | |
91 | struct { | |
92 | LONGEST val; | |
93 | struct type *type; | |
94 | } typed_val_int; | |
95 | struct { | |
edd079d9 | 96 | gdb_byte val[16]; |
3ed9baed IB |
97 | struct type *type; |
98 | } typed_val_float; | |
99 | struct symbol *sym; | |
100 | struct type *tval; | |
101 | struct typed_stoken tsval; | |
102 | struct stoken sval; | |
103 | struct ttype tsym; | |
104 | struct symtoken ssym; | |
105 | int ival; | |
444c1ed8 | 106 | int voidval; |
3ed9baed IB |
107 | enum exp_opcode opcode; |
108 | struct stoken_vector svec; | |
109 | } | |
110 | ||
111 | %{ | |
112 | /* YYSTYPE gets defined by %union */ | |
113 | static int parse_number (struct parser_state *, const char *, | |
114 | int, int, YYSTYPE *); | |
3ed9baed IB |
115 | %} |
116 | ||
444c1ed8 | 117 | %token <sval> IDENTIFIER UNKNOWN_NAME |
3ed9baed IB |
118 | %token <tsym> TYPENAME |
119 | %token <voidval> COMPLETE | |
120 | ||
121 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, | |
122 | but which would parse as a valid number in the current input radix. | |
123 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
124 | turned into a name or into a number. */ | |
125 | ||
126 | %token <sval> NAME_OR_INT | |
127 | ||
128 | %token <typed_val_int> INTEGER_LITERAL | |
129 | %token <typed_val_float> FLOAT_LITERAL | |
130 | %token <tsval> CHARACTER_LITERAL | |
131 | %token <tsval> STRING_LITERAL | |
132 | ||
133 | %type <svec> StringExp | |
134 | %type <tval> BasicType TypeExp | |
135 | %type <sval> IdentifierExp | |
136 | %type <ival> ArrayLiteral | |
137 | ||
138 | %token ENTRY | |
139 | %token ERROR | |
140 | ||
141 | /* Keywords that have a constant value. */ | |
142 | %token TRUE_KEYWORD FALSE_KEYWORD NULL_KEYWORD | |
143 | /* Class 'super' accessor. */ | |
144 | %token SUPER_KEYWORD | |
145 | /* Properties. */ | |
146 | %token CAST_KEYWORD SIZEOF_KEYWORD | |
147 | %token TYPEOF_KEYWORD TYPEID_KEYWORD | |
148 | %token INIT_KEYWORD | |
149 | /* Comparison keywords. */ | |
150 | /* Type storage classes. */ | |
151 | %token IMMUTABLE_KEYWORD CONST_KEYWORD SHARED_KEYWORD | |
152 | /* Non-scalar type keywords. */ | |
153 | %token STRUCT_KEYWORD UNION_KEYWORD | |
154 | %token CLASS_KEYWORD INTERFACE_KEYWORD | |
155 | %token ENUM_KEYWORD TEMPLATE_KEYWORD | |
156 | %token DELEGATE_KEYWORD FUNCTION_KEYWORD | |
157 | ||
158 | %token <sval> DOLLAR_VARIABLE | |
159 | ||
160 | %token <opcode> ASSIGN_MODIFY | |
161 | ||
162 | %left ',' | |
163 | %right '=' ASSIGN_MODIFY | |
164 | %right '?' | |
165 | %left OROR | |
166 | %left ANDAND | |
167 | %left '|' | |
168 | %left '^' | |
169 | %left '&' | |
170 | %left EQUAL NOTEQUAL '<' '>' LEQ GEQ | |
171 | %right LSH RSH | |
172 | %left '+' '-' | |
173 | %left '*' '/' '%' | |
174 | %right HATHAT | |
175 | %left IDENTITY NOTIDENTITY | |
176 | %right INCREMENT DECREMENT | |
177 | %right '.' '[' '(' | |
178 | %token DOTDOT | |
179 | ||
180 | \f | |
181 | %% | |
182 | ||
183 | start : | |
184 | Expression | |
185 | | TypeExp | |
186 | ; | |
187 | ||
188 | /* Expressions, including the comma operator. */ | |
189 | ||
190 | Expression: | |
191 | CommaExpression | |
192 | ; | |
193 | ||
194 | CommaExpression: | |
195 | AssignExpression | |
196 | | AssignExpression ',' CommaExpression | |
9412fdcc | 197 | { pstate->wrap2<comma_operation> (); } |
3ed9baed IB |
198 | ; |
199 | ||
200 | AssignExpression: | |
201 | ConditionalExpression | |
202 | | ConditionalExpression '=' AssignExpression | |
9412fdcc | 203 | { pstate->wrap2<assign_operation> (); } |
3ed9baed | 204 | | ConditionalExpression ASSIGN_MODIFY AssignExpression |
9412fdcc TT |
205 | { |
206 | operation_up rhs = pstate->pop (); | |
207 | operation_up lhs = pstate->pop (); | |
208 | pstate->push_new<assign_modify_operation> | |
209 | ($2, std::move (lhs), std::move (rhs)); | |
210 | } | |
3ed9baed IB |
211 | ; |
212 | ||
213 | ConditionalExpression: | |
214 | OrOrExpression | |
215 | | OrOrExpression '?' Expression ':' ConditionalExpression | |
9412fdcc TT |
216 | { |
217 | operation_up last = pstate->pop (); | |
218 | operation_up mid = pstate->pop (); | |
219 | operation_up first = pstate->pop (); | |
220 | pstate->push_new<ternop_cond_operation> | |
221 | (std::move (first), std::move (mid), | |
222 | std::move (last)); | |
223 | } | |
3ed9baed IB |
224 | ; |
225 | ||
226 | OrOrExpression: | |
227 | AndAndExpression | |
228 | | OrOrExpression OROR AndAndExpression | |
9412fdcc | 229 | { pstate->wrap2<logical_or_operation> (); } |
3ed9baed IB |
230 | ; |
231 | ||
232 | AndAndExpression: | |
233 | OrExpression | |
234 | | AndAndExpression ANDAND OrExpression | |
9412fdcc | 235 | { pstate->wrap2<logical_and_operation> (); } |
3ed9baed IB |
236 | ; |
237 | ||
238 | OrExpression: | |
239 | XorExpression | |
240 | | OrExpression '|' XorExpression | |
9412fdcc | 241 | { pstate->wrap2<bitwise_ior_operation> (); } |
3ed9baed IB |
242 | ; |
243 | ||
244 | XorExpression: | |
245 | AndExpression | |
246 | | XorExpression '^' AndExpression | |
9412fdcc | 247 | { pstate->wrap2<bitwise_xor_operation> (); } |
3ed9baed IB |
248 | ; |
249 | ||
250 | AndExpression: | |
251 | CmpExpression | |
252 | | AndExpression '&' CmpExpression | |
9412fdcc | 253 | { pstate->wrap2<bitwise_and_operation> (); } |
3ed9baed IB |
254 | ; |
255 | ||
256 | CmpExpression: | |
257 | ShiftExpression | |
258 | | EqualExpression | |
259 | | IdentityExpression | |
260 | | RelExpression | |
261 | ; | |
262 | ||
263 | EqualExpression: | |
264 | ShiftExpression EQUAL ShiftExpression | |
9412fdcc | 265 | { pstate->wrap2<equal_operation> (); } |
3ed9baed | 266 | | ShiftExpression NOTEQUAL ShiftExpression |
9412fdcc | 267 | { pstate->wrap2<notequal_operation> (); } |
3ed9baed IB |
268 | ; |
269 | ||
270 | IdentityExpression: | |
271 | ShiftExpression IDENTITY ShiftExpression | |
9412fdcc | 272 | { pstate->wrap2<equal_operation> (); } |
3ed9baed | 273 | | ShiftExpression NOTIDENTITY ShiftExpression |
9412fdcc | 274 | { pstate->wrap2<notequal_operation> (); } |
3ed9baed IB |
275 | ; |
276 | ||
277 | RelExpression: | |
278 | ShiftExpression '<' ShiftExpression | |
9412fdcc | 279 | { pstate->wrap2<less_operation> (); } |
3ed9baed | 280 | | ShiftExpression LEQ ShiftExpression |
9412fdcc | 281 | { pstate->wrap2<leq_operation> (); } |
3ed9baed | 282 | | ShiftExpression '>' ShiftExpression |
9412fdcc | 283 | { pstate->wrap2<gtr_operation> (); } |
3ed9baed | 284 | | ShiftExpression GEQ ShiftExpression |
9412fdcc | 285 | { pstate->wrap2<geq_operation> (); } |
3ed9baed IB |
286 | ; |
287 | ||
288 | ShiftExpression: | |
289 | AddExpression | |
290 | | ShiftExpression LSH AddExpression | |
9412fdcc | 291 | { pstate->wrap2<lsh_operation> (); } |
3ed9baed | 292 | | ShiftExpression RSH AddExpression |
9412fdcc | 293 | { pstate->wrap2<rsh_operation> (); } |
3ed9baed IB |
294 | ; |
295 | ||
296 | AddExpression: | |
297 | MulExpression | |
298 | | AddExpression '+' MulExpression | |
9412fdcc | 299 | { pstate->wrap2<add_operation> (); } |
3ed9baed | 300 | | AddExpression '-' MulExpression |
9412fdcc | 301 | { pstate->wrap2<sub_operation> (); } |
3ed9baed | 302 | | AddExpression '~' MulExpression |
9412fdcc | 303 | { pstate->wrap2<concat_operation> (); } |
3ed9baed IB |
304 | ; |
305 | ||
306 | MulExpression: | |
307 | UnaryExpression | |
308 | | MulExpression '*' UnaryExpression | |
9412fdcc | 309 | { pstate->wrap2<mul_operation> (); } |
3ed9baed | 310 | | MulExpression '/' UnaryExpression |
9412fdcc | 311 | { pstate->wrap2<div_operation> (); } |
3ed9baed | 312 | | MulExpression '%' UnaryExpression |
9412fdcc | 313 | { pstate->wrap2<rem_operation> (); } |
3ed9baed IB |
314 | |
315 | UnaryExpression: | |
316 | '&' UnaryExpression | |
9412fdcc | 317 | { pstate->wrap<unop_addr_operation> (); } |
3ed9baed | 318 | | INCREMENT UnaryExpression |
9412fdcc | 319 | { pstate->wrap<preinc_operation> (); } |
3ed9baed | 320 | | DECREMENT UnaryExpression |
9412fdcc | 321 | { pstate->wrap<predec_operation> (); } |
3ed9baed | 322 | | '*' UnaryExpression |
9412fdcc | 323 | { pstate->wrap<unop_ind_operation> (); } |
3ed9baed | 324 | | '-' UnaryExpression |
9412fdcc | 325 | { pstate->wrap<unary_neg_operation> (); } |
3ed9baed | 326 | | '+' UnaryExpression |
9412fdcc | 327 | { pstate->wrap<unary_plus_operation> (); } |
3ed9baed | 328 | | '!' UnaryExpression |
9412fdcc | 329 | { pstate->wrap<unary_logical_not_operation> (); } |
3ed9baed | 330 | | '~' UnaryExpression |
9412fdcc | 331 | { pstate->wrap<unary_complement_operation> (); } |
d5d8c4e1 | 332 | | TypeExp '.' SIZEOF_KEYWORD |
9412fdcc | 333 | { pstate->wrap<unop_sizeof_operation> (); } |
3ed9baed IB |
334 | | CastExpression |
335 | | PowExpression | |
336 | ; | |
337 | ||
338 | CastExpression: | |
339 | CAST_KEYWORD '(' TypeExp ')' UnaryExpression | |
9412fdcc | 340 | { pstate->wrap2<unop_cast_type_operation> (); } |
3ed9baed IB |
341 | /* C style cast is illegal D, but is still recognised in |
342 | the grammar, so we keep this around for convenience. */ | |
343 | | '(' TypeExp ')' UnaryExpression | |
9412fdcc | 344 | { pstate->wrap2<unop_cast_type_operation> (); } |
3ed9baed IB |
345 | ; |
346 | ||
347 | PowExpression: | |
348 | PostfixExpression | |
349 | | PostfixExpression HATHAT UnaryExpression | |
9412fdcc | 350 | { pstate->wrap2<exp_operation> (); } |
3ed9baed IB |
351 | ; |
352 | ||
353 | PostfixExpression: | |
354 | PrimaryExpression | |
444c1ed8 | 355 | | PostfixExpression '.' COMPLETE |
9412fdcc TT |
356 | { |
357 | structop_base_operation *op | |
358 | = new structop_ptr_operation (pstate->pop (), ""); | |
359 | pstate->mark_struct_expression (op); | |
360 | pstate->push (operation_up (op)); | |
361 | } | |
444c1ed8 | 362 | | PostfixExpression '.' IDENTIFIER |
9412fdcc TT |
363 | { |
364 | pstate->push_new<structop_operation> | |
365 | (pstate->pop (), copy_name ($3)); | |
366 | } | |
444c1ed8 | 367 | | PostfixExpression '.' IDENTIFIER COMPLETE |
9412fdcc TT |
368 | { |
369 | structop_base_operation *op | |
370 | = new structop_operation (pstate->pop (), copy_name ($3)); | |
371 | pstate->mark_struct_expression (op); | |
372 | pstate->push (operation_up (op)); | |
373 | } | |
d5d8c4e1 | 374 | | PostfixExpression '.' SIZEOF_KEYWORD |
9412fdcc | 375 | { pstate->wrap<unop_sizeof_operation> (); } |
3ed9baed | 376 | | PostfixExpression INCREMENT |
9412fdcc | 377 | { pstate->wrap<postinc_operation> (); } |
3ed9baed | 378 | | PostfixExpression DECREMENT |
9412fdcc | 379 | { pstate->wrap<postdec_operation> (); } |
3ed9baed IB |
380 | | CallExpression |
381 | | IndexExpression | |
382 | | SliceExpression | |
383 | ; | |
384 | ||
385 | ArgumentList: | |
386 | AssignExpression | |
43476f0b | 387 | { pstate->arglist_len = 1; } |
3ed9baed | 388 | | ArgumentList ',' AssignExpression |
43476f0b | 389 | { pstate->arglist_len++; } |
3ed9baed IB |
390 | ; |
391 | ||
392 | ArgumentList_opt: | |
393 | /* EMPTY */ | |
43476f0b | 394 | { pstate->arglist_len = 0; } |
3ed9baed IB |
395 | | ArgumentList |
396 | ; | |
397 | ||
398 | CallExpression: | |
399 | PostfixExpression '(' | |
43476f0b | 400 | { pstate->start_arglist (); } |
3ed9baed | 401 | ArgumentList_opt ')' |
9412fdcc TT |
402 | { |
403 | std::vector<operation_up> args | |
404 | = pstate->pop_vector (pstate->end_arglist ()); | |
405 | pstate->push_new<funcall_operation> | |
406 | (pstate->pop (), std::move (args)); | |
407 | } | |
3ed9baed IB |
408 | ; |
409 | ||
410 | IndexExpression: | |
411 | PostfixExpression '[' ArgumentList ']' | |
43476f0b | 412 | { if (pstate->arglist_len > 0) |
3ed9baed | 413 | { |
9412fdcc TT |
414 | std::vector<operation_up> args |
415 | = pstate->pop_vector (pstate->arglist_len); | |
416 | pstate->push_new<multi_subscript_operation> | |
417 | (pstate->pop (), std::move (args)); | |
3ed9baed IB |
418 | } |
419 | else | |
9412fdcc | 420 | pstate->wrap2<subscript_operation> (); |
3ed9baed IB |
421 | } |
422 | ; | |
423 | ||
424 | SliceExpression: | |
425 | PostfixExpression '[' ']' | |
426 | { /* Do nothing. */ } | |
427 | | PostfixExpression '[' AssignExpression DOTDOT AssignExpression ']' | |
9412fdcc TT |
428 | { |
429 | operation_up last = pstate->pop (); | |
430 | operation_up mid = pstate->pop (); | |
431 | operation_up first = pstate->pop (); | |
432 | pstate->push_new<ternop_slice_operation> | |
433 | (std::move (first), std::move (mid), | |
434 | std::move (last)); | |
435 | } | |
3ed9baed IB |
436 | ; |
437 | ||
438 | PrimaryExpression: | |
439 | '(' Expression ')' | |
440 | { /* Do nothing. */ } | |
441 | | IdentifierExp | |
444c1ed8 | 442 | { struct bound_minimal_symbol msymbol; |
61f4b350 | 443 | std::string copy = copy_name ($1); |
444c1ed8 IB |
444 | struct field_of_this_result is_a_field_of_this; |
445 | struct block_symbol sym; | |
446 | ||
447 | /* Handle VAR, which could be local or global. */ | |
61f4b350 TT |
448 | sym = lookup_symbol (copy.c_str (), |
449 | pstate->expression_context_block, | |
1e58a4a4 | 450 | VAR_DOMAIN, &is_a_field_of_this); |
444c1ed8 IB |
451 | if (sym.symbol && SYMBOL_CLASS (sym.symbol) != LOC_TYPEDEF) |
452 | { | |
453 | if (symbol_read_needs_frame (sym.symbol)) | |
699bd4cf | 454 | pstate->block_tracker->update (sym); |
9412fdcc TT |
455 | pstate->push_new<var_value_operation> (sym.symbol, |
456 | sym.block); | |
444c1ed8 IB |
457 | } |
458 | else if (is_a_field_of_this.type != NULL) | |
459 | { | |
460 | /* It hangs off of `this'. Must not inadvertently convert from a | |
461 | method call to data ref. */ | |
699bd4cf | 462 | pstate->block_tracker->update (sym); |
9412fdcc TT |
463 | operation_up thisop |
464 | = make_operation<op_this_operation> (); | |
465 | pstate->push_new<structop_ptr_operation> | |
466 | (std::move (thisop), std::move (copy)); | |
444c1ed8 IB |
467 | } |
468 | else | |
469 | { | |
470 | /* Lookup foreign name in global static symbols. */ | |
61f4b350 | 471 | msymbol = lookup_bound_minimal_symbol (copy.c_str ()); |
444c1ed8 | 472 | if (msymbol.minsym != NULL) |
9c79936b | 473 | pstate->push_new<var_msym_value_operation> (msymbol); |
444c1ed8 IB |
474 | else if (!have_full_symbols () && !have_partial_symbols ()) |
475 | error (_("No symbol table is loaded. Use the \"file\" command")); | |
476 | else | |
61f4b350 TT |
477 | error (_("No symbol \"%s\" in current context."), |
478 | copy.c_str ()); | |
444c1ed8 IB |
479 | } |
480 | } | |
481 | | TypeExp '.' IdentifierExp | |
482 | { struct type *type = check_typedef ($1); | |
483 | ||
484 | /* Check if the qualified name is in the global | |
485 | context. However if the symbol has not already | |
486 | been resolved, it's not likely to be found. */ | |
78134374 | 487 | if (type->code () == TYPE_CODE_MODULE) |
444c1ed8 | 488 | { |
444c1ed8 | 489 | struct block_symbol sym; |
b56ccc20 KS |
490 | const char *type_name = TYPE_SAFE_NAME (type); |
491 | int type_name_len = strlen (type_name); | |
5613c585 TT |
492 | std::string name |
493 | = string_printf ("%.*s.%.*s", | |
b56ccc20 | 494 | type_name_len, type_name, |
c0fe2ae7 | 495 | $3.length, $3.ptr); |
444c1ed8 IB |
496 | |
497 | sym = | |
5613c585 TT |
498 | lookup_symbol (name.c_str (), |
499 | (const struct block *) NULL, | |
444c1ed8 | 500 | VAR_DOMAIN, NULL); |
9412fdcc | 501 | pstate->push_symbol (name.c_str (), sym); |
1b30f421 TT |
502 | } |
503 | else | |
504 | { | |
505 | /* Check if the qualified name resolves as a member | |
506 | of an aggregate or an enum type. */ | |
507 | if (!type_aggregate_p (type)) | |
508 | error (_("`%s' is not defined as an aggregate type."), | |
509 | TYPE_SAFE_NAME (type)); | |
510 | ||
9412fdcc TT |
511 | pstate->push_new<scope_operation> |
512 | (type, copy_name ($3)); | |
444c1ed8 | 513 | } |
444c1ed8 | 514 | } |
3ed9baed | 515 | | DOLLAR_VARIABLE |
9412fdcc | 516 | { pstate->push_dollar ($1); } |
3ed9baed IB |
517 | | NAME_OR_INT |
518 | { YYSTYPE val; | |
dda83cd7 | 519 | parse_number (pstate, $1.ptr, $1.length, 0, &val); |
9412fdcc TT |
520 | pstate->push_new<long_const_operation> |
521 | (val.typed_val_int.type, val.typed_val_int.val); } | |
3ed9baed IB |
522 | | NULL_KEYWORD |
523 | { struct type *type = parse_d_type (pstate)->builtin_void; | |
524 | type = lookup_pointer_type (type); | |
9412fdcc | 525 | pstate->push_new<long_const_operation> (type, 0); } |
3ed9baed | 526 | | TRUE_KEYWORD |
9412fdcc | 527 | { pstate->push_new<bool_operation> (true); } |
3ed9baed | 528 | | FALSE_KEYWORD |
9412fdcc | 529 | { pstate->push_new<bool_operation> (false); } |
3ed9baed | 530 | | INTEGER_LITERAL |
9412fdcc | 531 | { pstate->push_new<long_const_operation> ($1.type, $1.val); } |
3ed9baed | 532 | | FLOAT_LITERAL |
9412fdcc TT |
533 | { |
534 | float_data data; | |
535 | std::copy (std::begin ($1.val), std::end ($1.val), | |
536 | std::begin (data)); | |
537 | pstate->push_new<float_const_operation> ($1.type, data); | |
538 | } | |
3ed9baed IB |
539 | | CHARACTER_LITERAL |
540 | { struct stoken_vector vec; | |
541 | vec.len = 1; | |
542 | vec.tokens = &$1; | |
9412fdcc | 543 | pstate->push_c_string (0, &vec); } |
3ed9baed IB |
544 | | StringExp |
545 | { int i; | |
9412fdcc | 546 | pstate->push_c_string (0, &$1); |
3ed9baed IB |
547 | for (i = 0; i < $1.len; ++i) |
548 | free ($1.tokens[i].ptr); | |
549 | free ($1.tokens); } | |
550 | | ArrayLiteral | |
9412fdcc TT |
551 | { |
552 | std::vector<operation_up> args | |
553 | = pstate->pop_vector ($1); | |
554 | pstate->push_new<array_operation> | |
555 | (0, $1 - 1, std::move (args)); | |
556 | } | |
d5d8c4e1 | 557 | | TYPEOF_KEYWORD '(' Expression ')' |
9412fdcc | 558 | { pstate->wrap<typeof_operation> (); } |
3ed9baed IB |
559 | ; |
560 | ||
561 | ArrayLiteral: | |
562 | '[' ArgumentList_opt ']' | |
43476f0b | 563 | { $$ = pstate->arglist_len; } |
3ed9baed IB |
564 | ; |
565 | ||
566 | IdentifierExp: | |
567 | IDENTIFIER | |
3ed9baed IB |
568 | ; |
569 | ||
570 | StringExp: | |
571 | STRING_LITERAL | |
572 | { /* We copy the string here, and not in the | |
573 | lexer, to guarantee that we do not leak a | |
574 | string. Note that we follow the | |
575 | NUL-termination convention of the | |
576 | lexer. */ | |
577 | struct typed_stoken *vec = XNEW (struct typed_stoken); | |
578 | $$.len = 1; | |
579 | $$.tokens = vec; | |
580 | ||
581 | vec->type = $1.type; | |
582 | vec->length = $1.length; | |
224c3ddb | 583 | vec->ptr = (char *) malloc ($1.length + 1); |
3ed9baed IB |
584 | memcpy (vec->ptr, $1.ptr, $1.length + 1); |
585 | } | |
586 | | StringExp STRING_LITERAL | |
587 | { /* Note that we NUL-terminate here, but just | |
588 | for convenience. */ | |
589 | char *p; | |
590 | ++$$.len; | |
224c3ddb SM |
591 | $$.tokens |
592 | = XRESIZEVEC (struct typed_stoken, $$.tokens, $$.len); | |
3ed9baed | 593 | |
224c3ddb | 594 | p = (char *) malloc ($2.length + 1); |
3ed9baed IB |
595 | memcpy (p, $2.ptr, $2.length + 1); |
596 | ||
597 | $$.tokens[$$.len - 1].type = $2.type; | |
598 | $$.tokens[$$.len - 1].length = $2.length; | |
599 | $$.tokens[$$.len - 1].ptr = p; | |
600 | } | |
601 | ; | |
602 | ||
603 | TypeExp: | |
444c1ed8 IB |
604 | '(' TypeExp ')' |
605 | { /* Do nothing. */ } | |
606 | | BasicType | |
9412fdcc | 607 | { pstate->push_new<type_operation> ($1); } |
3ed9baed | 608 | | BasicType BasicType2 |
dac43e32 | 609 | { $$ = type_stack->follow_types ($1); |
9412fdcc | 610 | pstate->push_new<type_operation> ($$); |
3ed9baed IB |
611 | } |
612 | ; | |
613 | ||
614 | BasicType2: | |
615 | '*' | |
dac43e32 | 616 | { type_stack->push (tp_pointer); } |
3ed9baed | 617 | | '*' BasicType2 |
dac43e32 | 618 | { type_stack->push (tp_pointer); } |
3ed9baed | 619 | | '[' INTEGER_LITERAL ']' |
dac43e32 TT |
620 | { type_stack->push ($2.val); |
621 | type_stack->push (tp_array); } | |
3ed9baed | 622 | | '[' INTEGER_LITERAL ']' BasicType2 |
dac43e32 TT |
623 | { type_stack->push ($2.val); |
624 | type_stack->push (tp_array); } | |
3ed9baed IB |
625 | ; |
626 | ||
627 | BasicType: | |
628 | TYPENAME | |
629 | { $$ = $1.type; } | |
3ed9baed IB |
630 | ; |
631 | ||
632 | %% | |
633 | ||
7f3706eb IB |
634 | /* Return true if the type is aggregate-like. */ |
635 | ||
636 | static int | |
637 | type_aggregate_p (struct type *type) | |
638 | { | |
78134374 SM |
639 | return (type->code () == TYPE_CODE_STRUCT |
640 | || type->code () == TYPE_CODE_UNION | |
641 | || type->code () == TYPE_CODE_MODULE | |
642 | || (type->code () == TYPE_CODE_ENUM | |
3bc440a2 | 643 | && type->is_declared_class ())); |
7f3706eb IB |
644 | } |
645 | ||
3ed9baed IB |
646 | /* Take care of parsing a number (anything that starts with a digit). |
647 | Set yylval and return the token type; update lexptr. | |
648 | LEN is the number of characters in it. */ | |
649 | ||
650 | /*** Needs some error checking for the float case ***/ | |
651 | ||
652 | static int | |
653 | parse_number (struct parser_state *ps, const char *p, | |
654 | int len, int parsed_float, YYSTYPE *putithere) | |
655 | { | |
656 | ULONGEST n = 0; | |
657 | ULONGEST prevn = 0; | |
658 | ULONGEST un; | |
659 | ||
660 | int i = 0; | |
661 | int c; | |
662 | int base = input_radix; | |
663 | int unsigned_p = 0; | |
664 | int long_p = 0; | |
665 | ||
666 | /* We have found a "L" or "U" suffix. */ | |
667 | int found_suffix = 0; | |
668 | ||
669 | ULONGEST high_bit; | |
670 | struct type *signed_type; | |
671 | struct type *unsigned_type; | |
672 | ||
673 | if (parsed_float) | |
674 | { | |
3ed9baed IB |
675 | char *s, *sp; |
676 | ||
677 | /* Strip out all embedded '_' before passing to parse_float. */ | |
678 | s = (char *) alloca (len + 1); | |
679 | sp = s; | |
680 | while (len-- > 0) | |
681 | { | |
682 | if (*p != '_') | |
683 | *sp++ = *p; | |
684 | p++; | |
685 | } | |
686 | *sp = '\0'; | |
687 | len = strlen (s); | |
688 | ||
edd079d9 UW |
689 | /* Check suffix for `i' , `fi' or `li' (idouble, ifloat or ireal). */ |
690 | if (len >= 1 && tolower (s[len - 1]) == 'i') | |
3ed9baed | 691 | { |
edd079d9 | 692 | if (len >= 2 && tolower (s[len - 2]) == 'f') |
3ed9baed IB |
693 | { |
694 | putithere->typed_val_float.type | |
edd079d9 UW |
695 | = parse_d_type (ps)->builtin_ifloat; |
696 | len -= 2; | |
3ed9baed | 697 | } |
edd079d9 | 698 | else if (len >= 2 && tolower (s[len - 2]) == 'l') |
3ed9baed IB |
699 | { |
700 | putithere->typed_val_float.type | |
edd079d9 UW |
701 | = parse_d_type (ps)->builtin_ireal; |
702 | len -= 2; | |
3ed9baed | 703 | } |
edd079d9 | 704 | else |
3ed9baed IB |
705 | { |
706 | putithere->typed_val_float.type | |
707 | = parse_d_type (ps)->builtin_idouble; | |
edd079d9 | 708 | len -= 1; |
3ed9baed | 709 | } |
3ed9baed | 710 | } |
edd079d9 UW |
711 | /* Check suffix for `f' or `l'' (float or real). */ |
712 | else if (len >= 1 && tolower (s[len - 1]) == 'f') | |
3ed9baed | 713 | { |
edd079d9 UW |
714 | putithere->typed_val_float.type |
715 | = parse_d_type (ps)->builtin_float; | |
716 | len -= 1; | |
717 | } | |
718 | else if (len >= 1 && tolower (s[len - 1]) == 'l') | |
719 | { | |
720 | putithere->typed_val_float.type | |
721 | = parse_d_type (ps)->builtin_real; | |
722 | len -= 1; | |
3ed9baed | 723 | } |
edd079d9 | 724 | /* Default type if no suffix. */ |
3ed9baed | 725 | else |
edd079d9 UW |
726 | { |
727 | putithere->typed_val_float.type | |
728 | = parse_d_type (ps)->builtin_double; | |
729 | } | |
730 | ||
731 | if (!parse_float (s, len, | |
732 | putithere->typed_val_float.type, | |
733 | putithere->typed_val_float.val)) | |
3ed9baed IB |
734 | return ERROR; |
735 | ||
736 | return FLOAT_LITERAL; | |
737 | } | |
738 | ||
739 | /* Handle base-switching prefixes 0x, 0b, 0 */ | |
740 | if (p[0] == '0') | |
741 | switch (p[1]) | |
742 | { | |
743 | case 'x': | |
744 | case 'X': | |
745 | if (len >= 3) | |
746 | { | |
747 | p += 2; | |
748 | base = 16; | |
749 | len -= 2; | |
750 | } | |
751 | break; | |
752 | ||
753 | case 'b': | |
754 | case 'B': | |
755 | if (len >= 3) | |
756 | { | |
757 | p += 2; | |
758 | base = 2; | |
759 | len -= 2; | |
760 | } | |
761 | break; | |
762 | ||
763 | default: | |
764 | base = 8; | |
765 | break; | |
766 | } | |
767 | ||
768 | while (len-- > 0) | |
769 | { | |
770 | c = *p++; | |
771 | if (c == '_') | |
772 | continue; /* Ignore embedded '_'. */ | |
773 | if (c >= 'A' && c <= 'Z') | |
774 | c += 'a' - 'A'; | |
775 | if (c != 'l' && c != 'u') | |
776 | n *= base; | |
777 | if (c >= '0' && c <= '9') | |
778 | { | |
779 | if (found_suffix) | |
780 | return ERROR; | |
781 | n += i = c - '0'; | |
782 | } | |
783 | else | |
784 | { | |
785 | if (base > 10 && c >= 'a' && c <= 'f') | |
786 | { | |
787 | if (found_suffix) | |
dda83cd7 | 788 | return ERROR; |
3ed9baed IB |
789 | n += i = c - 'a' + 10; |
790 | } | |
791 | else if (c == 'l' && long_p == 0) | |
792 | { | |
793 | long_p = 1; | |
794 | found_suffix = 1; | |
795 | } | |
796 | else if (c == 'u' && unsigned_p == 0) | |
797 | { | |
798 | unsigned_p = 1; | |
799 | found_suffix = 1; | |
800 | } | |
801 | else | |
802 | return ERROR; /* Char not a digit */ | |
803 | } | |
804 | if (i >= base) | |
805 | return ERROR; /* Invalid digit in this base. */ | |
806 | /* Portably test for integer overflow. */ | |
807 | if (c != 'l' && c != 'u') | |
808 | { | |
809 | ULONGEST n2 = prevn * base; | |
810 | if ((n2 / base != prevn) || (n2 + i < prevn)) | |
811 | error (_("Numeric constant too large.")); | |
812 | } | |
813 | prevn = n; | |
814 | } | |
815 | ||
816 | /* An integer constant is an int or a long. An L suffix forces it to | |
817 | be long, and a U suffix forces it to be unsigned. To figure out | |
818 | whether it fits, we shift it right and see whether anything remains. | |
819 | Note that we can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or | |
820 | more in one operation, because many compilers will warn about such a | |
821 | shift (which always produces a zero result). To deal with the case | |
822 | where it is we just always shift the value more than once, with fewer | |
823 | bits each time. */ | |
824 | un = (ULONGEST) n >> 2; | |
825 | if (long_p == 0 && (un >> 30) == 0) | |
826 | { | |
827 | high_bit = ((ULONGEST) 1) << 31; | |
828 | signed_type = parse_d_type (ps)->builtin_int; | |
829 | /* For decimal notation, keep the sign of the worked out type. */ | |
830 | if (base == 10 && !unsigned_p) | |
831 | unsigned_type = parse_d_type (ps)->builtin_long; | |
832 | else | |
833 | unsigned_type = parse_d_type (ps)->builtin_uint; | |
834 | } | |
835 | else | |
836 | { | |
837 | int shift; | |
838 | if (sizeof (ULONGEST) * HOST_CHAR_BIT < 64) | |
839 | /* A long long does not fit in a LONGEST. */ | |
840 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); | |
841 | else | |
842 | shift = 63; | |
843 | high_bit = (ULONGEST) 1 << shift; | |
844 | signed_type = parse_d_type (ps)->builtin_long; | |
845 | unsigned_type = parse_d_type (ps)->builtin_ulong; | |
846 | } | |
847 | ||
848 | putithere->typed_val_int.val = n; | |
849 | ||
850 | /* If the high bit of the worked out type is set then this number | |
851 | has to be unsigned_type. */ | |
852 | if (unsigned_p || (n & high_bit)) | |
853 | putithere->typed_val_int.type = unsigned_type; | |
854 | else | |
855 | putithere->typed_val_int.type = signed_type; | |
856 | ||
857 | return INTEGER_LITERAL; | |
858 | } | |
859 | ||
860 | /* Temporary obstack used for holding strings. */ | |
861 | static struct obstack tempbuf; | |
862 | static int tempbuf_init; | |
863 | ||
864 | /* Parse a string or character literal from TOKPTR. The string or | |
865 | character may be wide or unicode. *OUTPTR is set to just after the | |
866 | end of the literal in the input string. The resulting token is | |
867 | stored in VALUE. This returns a token value, either STRING or | |
868 | CHAR, depending on what was parsed. *HOST_CHARS is set to the | |
869 | number of host characters in the literal. */ | |
870 | ||
871 | static int | |
872 | parse_string_or_char (const char *tokptr, const char **outptr, | |
873 | struct typed_stoken *value, int *host_chars) | |
874 | { | |
875 | int quote; | |
876 | ||
877 | /* Build the gdb internal form of the input string in tempbuf. Note | |
878 | that the buffer is null byte terminated *only* for the | |
879 | convenience of debugging gdb itself and printing the buffer | |
880 | contents when the buffer contains no embedded nulls. Gdb does | |
881 | not depend upon the buffer being null byte terminated, it uses | |
882 | the length string instead. This allows gdb to handle C strings | |
883 | (as well as strings in other languages) with embedded null | |
884 | bytes */ | |
885 | ||
886 | if (!tempbuf_init) | |
887 | tempbuf_init = 1; | |
888 | else | |
889 | obstack_free (&tempbuf, NULL); | |
890 | obstack_init (&tempbuf); | |
891 | ||
892 | /* Skip the quote. */ | |
893 | quote = *tokptr; | |
894 | ++tokptr; | |
895 | ||
896 | *host_chars = 0; | |
897 | ||
898 | while (*tokptr) | |
899 | { | |
900 | char c = *tokptr; | |
901 | if (c == '\\') | |
902 | { | |
903 | ++tokptr; | |
904 | *host_chars += c_parse_escape (&tokptr, &tempbuf); | |
905 | } | |
906 | else if (c == quote) | |
907 | break; | |
908 | else | |
909 | { | |
910 | obstack_1grow (&tempbuf, c); | |
911 | ++tokptr; | |
912 | /* FIXME: this does the wrong thing with multi-byte host | |
913 | characters. We could use mbrlen here, but that would | |
914 | make "set host-charset" a bit less useful. */ | |
915 | ++*host_chars; | |
916 | } | |
917 | } | |
918 | ||
919 | if (*tokptr != quote) | |
920 | { | |
921 | if (quote == '"' || quote == '`') | |
922 | error (_("Unterminated string in expression.")); | |
923 | else | |
924 | error (_("Unmatched single quote.")); | |
925 | } | |
926 | ++tokptr; | |
927 | ||
928 | /* FIXME: should instead use own language string_type enum | |
929 | and handle D-specific string suffixes here. */ | |
930 | if (quote == '\'') | |
931 | value->type = C_CHAR; | |
932 | else | |
933 | value->type = C_STRING; | |
934 | ||
79f33898 | 935 | value->ptr = (char *) obstack_base (&tempbuf); |
3ed9baed IB |
936 | value->length = obstack_object_size (&tempbuf); |
937 | ||
938 | *outptr = tokptr; | |
939 | ||
940 | return quote == '\'' ? CHARACTER_LITERAL : STRING_LITERAL; | |
941 | } | |
942 | ||
943 | struct token | |
944 | { | |
a121b7c1 | 945 | const char *oper; |
3ed9baed IB |
946 | int token; |
947 | enum exp_opcode opcode; | |
948 | }; | |
949 | ||
950 | static const struct token tokentab3[] = | |
951 | { | |
952 | {"^^=", ASSIGN_MODIFY, BINOP_EXP}, | |
953 | {"<<=", ASSIGN_MODIFY, BINOP_LSH}, | |
954 | {">>=", ASSIGN_MODIFY, BINOP_RSH}, | |
955 | }; | |
956 | ||
957 | static const struct token tokentab2[] = | |
958 | { | |
959 | {"+=", ASSIGN_MODIFY, BINOP_ADD}, | |
960 | {"-=", ASSIGN_MODIFY, BINOP_SUB}, | |
961 | {"*=", ASSIGN_MODIFY, BINOP_MUL}, | |
962 | {"/=", ASSIGN_MODIFY, BINOP_DIV}, | |
963 | {"%=", ASSIGN_MODIFY, BINOP_REM}, | |
964 | {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR}, | |
965 | {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND}, | |
966 | {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR}, | |
79ab486e TT |
967 | {"++", INCREMENT, OP_NULL}, |
968 | {"--", DECREMENT, OP_NULL}, | |
969 | {"&&", ANDAND, OP_NULL}, | |
970 | {"||", OROR, OP_NULL}, | |
971 | {"^^", HATHAT, OP_NULL}, | |
972 | {"<<", LSH, OP_NULL}, | |
973 | {">>", RSH, OP_NULL}, | |
974 | {"==", EQUAL, OP_NULL}, | |
975 | {"!=", NOTEQUAL, OP_NULL}, | |
976 | {"<=", LEQ, OP_NULL}, | |
977 | {">=", GEQ, OP_NULL}, | |
978 | {"..", DOTDOT, OP_NULL}, | |
3ed9baed IB |
979 | }; |
980 | ||
981 | /* Identifier-like tokens. */ | |
982 | static const struct token ident_tokens[] = | |
983 | { | |
79ab486e TT |
984 | {"is", IDENTITY, OP_NULL}, |
985 | {"!is", NOTIDENTITY, OP_NULL}, | |
3ed9baed IB |
986 | |
987 | {"cast", CAST_KEYWORD, OP_NULL}, | |
988 | {"const", CONST_KEYWORD, OP_NULL}, | |
989 | {"immutable", IMMUTABLE_KEYWORD, OP_NULL}, | |
990 | {"shared", SHARED_KEYWORD, OP_NULL}, | |
991 | {"super", SUPER_KEYWORD, OP_NULL}, | |
992 | ||
993 | {"null", NULL_KEYWORD, OP_NULL}, | |
994 | {"true", TRUE_KEYWORD, OP_NULL}, | |
995 | {"false", FALSE_KEYWORD, OP_NULL}, | |
996 | ||
997 | {"init", INIT_KEYWORD, OP_NULL}, | |
998 | {"sizeof", SIZEOF_KEYWORD, OP_NULL}, | |
999 | {"typeof", TYPEOF_KEYWORD, OP_NULL}, | |
1000 | {"typeid", TYPEID_KEYWORD, OP_NULL}, | |
1001 | ||
1002 | {"delegate", DELEGATE_KEYWORD, OP_NULL}, | |
1003 | {"function", FUNCTION_KEYWORD, OP_NULL}, | |
1004 | {"struct", STRUCT_KEYWORD, OP_NULL}, | |
1005 | {"union", UNION_KEYWORD, OP_NULL}, | |
1006 | {"class", CLASS_KEYWORD, OP_NULL}, | |
1007 | {"interface", INTERFACE_KEYWORD, OP_NULL}, | |
1008 | {"enum", ENUM_KEYWORD, OP_NULL}, | |
1009 | {"template", TEMPLATE_KEYWORD, OP_NULL}, | |
1010 | }; | |
1011 | ||
3ed9baed IB |
1012 | /* This is set if a NAME token appeared at the very end of the input |
1013 | string, with no whitespace separating the name from the EOF. This | |
1014 | is used only when parsing to do field name completion. */ | |
1015 | static int saw_name_at_eof; | |
1016 | ||
1017 | /* This is set if the previously-returned token was a structure operator. | |
1018 | This is used only when parsing to do field name completion. */ | |
1019 | static int last_was_structop; | |
1020 | ||
28aaf3fd TT |
1021 | /* Depth of parentheses. */ |
1022 | static int paren_depth; | |
1023 | ||
3ed9baed IB |
1024 | /* Read one token, getting characters through lexptr. */ |
1025 | ||
1026 | static int | |
444c1ed8 | 1027 | lex_one_token (struct parser_state *par_state) |
3ed9baed IB |
1028 | { |
1029 | int c; | |
1030 | int namelen; | |
1031 | unsigned int i; | |
1032 | const char *tokstart; | |
1033 | int saw_structop = last_was_structop; | |
3ed9baed IB |
1034 | |
1035 | last_was_structop = 0; | |
1036 | ||
1037 | retry: | |
1038 | ||
5776fca3 | 1039 | pstate->prev_lexptr = pstate->lexptr; |
3ed9baed | 1040 | |
5776fca3 | 1041 | tokstart = pstate->lexptr; |
3ed9baed IB |
1042 | /* See if it is a special token of length 3. */ |
1043 | for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++) | |
fe978cb0 | 1044 | if (strncmp (tokstart, tokentab3[i].oper, 3) == 0) |
3ed9baed | 1045 | { |
5776fca3 | 1046 | pstate->lexptr += 3; |
3ed9baed IB |
1047 | yylval.opcode = tokentab3[i].opcode; |
1048 | return tokentab3[i].token; | |
1049 | } | |
1050 | ||
1051 | /* See if it is a special token of length 2. */ | |
1052 | for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++) | |
fe978cb0 | 1053 | if (strncmp (tokstart, tokentab2[i].oper, 2) == 0) |
3ed9baed | 1054 | { |
5776fca3 | 1055 | pstate->lexptr += 2; |
3ed9baed IB |
1056 | yylval.opcode = tokentab2[i].opcode; |
1057 | return tokentab2[i].token; | |
1058 | } | |
1059 | ||
1060 | switch (c = *tokstart) | |
1061 | { | |
1062 | case 0: | |
1063 | /* If we're parsing for field name completion, and the previous | |
1064 | token allows such completion, return a COMPLETE token. | |
1065 | Otherwise, we were already scanning the original text, and | |
1066 | we're really done. */ | |
1067 | if (saw_name_at_eof) | |
1068 | { | |
1069 | saw_name_at_eof = 0; | |
1070 | return COMPLETE; | |
1071 | } | |
1072 | else if (saw_structop) | |
1073 | return COMPLETE; | |
1074 | else | |
dda83cd7 | 1075 | return 0; |
3ed9baed IB |
1076 | |
1077 | case ' ': | |
1078 | case '\t': | |
1079 | case '\n': | |
5776fca3 | 1080 | pstate->lexptr++; |
3ed9baed IB |
1081 | goto retry; |
1082 | ||
1083 | case '[': | |
1084 | case '(': | |
1085 | paren_depth++; | |
5776fca3 | 1086 | pstate->lexptr++; |
3ed9baed IB |
1087 | return c; |
1088 | ||
1089 | case ']': | |
1090 | case ')': | |
1091 | if (paren_depth == 0) | |
1092 | return 0; | |
1093 | paren_depth--; | |
5776fca3 | 1094 | pstate->lexptr++; |
3ed9baed IB |
1095 | return c; |
1096 | ||
1097 | case ',': | |
8621b685 | 1098 | if (pstate->comma_terminates && paren_depth == 0) |
3ed9baed | 1099 | return 0; |
5776fca3 | 1100 | pstate->lexptr++; |
3ed9baed IB |
1101 | return c; |
1102 | ||
1103 | case '.': | |
1104 | /* Might be a floating point number. */ | |
5776fca3 | 1105 | if (pstate->lexptr[1] < '0' || pstate->lexptr[1] > '9') |
3ed9baed | 1106 | { |
2a612529 | 1107 | if (pstate->parse_completion) |
3ed9baed IB |
1108 | last_was_structop = 1; |
1109 | goto symbol; /* Nope, must be a symbol. */ | |
1110 | } | |
86a73007 | 1111 | /* FALL THRU. */ |
3ed9baed IB |
1112 | |
1113 | case '0': | |
1114 | case '1': | |
1115 | case '2': | |
1116 | case '3': | |
1117 | case '4': | |
1118 | case '5': | |
1119 | case '6': | |
1120 | case '7': | |
1121 | case '8': | |
1122 | case '9': | |
1123 | { | |
1124 | /* It's a number. */ | |
1125 | int got_dot = 0, got_e = 0, toktype; | |
1126 | const char *p = tokstart; | |
1127 | int hex = input_radix > 10; | |
1128 | ||
1129 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
1130 | { | |
1131 | p += 2; | |
1132 | hex = 1; | |
1133 | } | |
1134 | ||
1135 | for (;; ++p) | |
1136 | { | |
1137 | /* Hex exponents start with 'p', because 'e' is a valid hex | |
1138 | digit and thus does not indicate a floating point number | |
1139 | when the radix is hex. */ | |
1140 | if ((!hex && !got_e && tolower (p[0]) == 'e') | |
1141 | || (hex && !got_e && tolower (p[0] == 'p'))) | |
1142 | got_dot = got_e = 1; | |
1143 | /* A '.' always indicates a decimal floating point number | |
1144 | regardless of the radix. If we have a '..' then its the | |
1145 | end of the number and the beginning of a slice. */ | |
1146 | else if (!got_dot && (p[0] == '.' && p[1] != '.')) | |
1147 | got_dot = 1; | |
1148 | /* This is the sign of the exponent, not the end of the number. */ | |
1149 | else if (got_e && (tolower (p[-1]) == 'e' || tolower (p[-1]) == 'p') | |
1150 | && (*p == '-' || *p == '+')) | |
1151 | continue; | |
1152 | /* We will take any letters or digits, ignoring any embedded '_'. | |
1153 | parse_number will complain if past the radix, or if L or U are | |
1154 | not final. */ | |
c0fe2ae7 IB |
1155 | else if ((*p < '0' || *p > '9') && (*p != '_') |
1156 | && ((*p < 'a' || *p > 'z') && (*p < 'A' || *p > 'Z'))) | |
3ed9baed IB |
1157 | break; |
1158 | } | |
1159 | ||
444c1ed8 | 1160 | toktype = parse_number (par_state, tokstart, p - tokstart, |
3ed9baed IB |
1161 | got_dot|got_e, &yylval); |
1162 | if (toktype == ERROR) | |
1163 | { | |
1164 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
1165 | ||
1166 | memcpy (err_copy, tokstart, p - tokstart); | |
1167 | err_copy[p - tokstart] = 0; | |
1168 | error (_("Invalid number \"%s\"."), err_copy); | |
1169 | } | |
5776fca3 | 1170 | pstate->lexptr = p; |
3ed9baed IB |
1171 | return toktype; |
1172 | } | |
1173 | ||
1174 | case '@': | |
1175 | { | |
1176 | const char *p = &tokstart[1]; | |
1177 | size_t len = strlen ("entry"); | |
1178 | ||
1179 | while (isspace (*p)) | |
1180 | p++; | |
1181 | if (strncmp (p, "entry", len) == 0 && !isalnum (p[len]) | |
1182 | && p[len] != '_') | |
1183 | { | |
5776fca3 | 1184 | pstate->lexptr = &p[len]; |
3ed9baed IB |
1185 | return ENTRY; |
1186 | } | |
1187 | } | |
1188 | /* FALLTHRU */ | |
1189 | case '+': | |
1190 | case '-': | |
1191 | case '*': | |
1192 | case '/': | |
1193 | case '%': | |
1194 | case '|': | |
1195 | case '&': | |
1196 | case '^': | |
1197 | case '~': | |
1198 | case '!': | |
1199 | case '<': | |
1200 | case '>': | |
1201 | case '?': | |
1202 | case ':': | |
1203 | case '=': | |
1204 | case '{': | |
1205 | case '}': | |
1206 | symbol: | |
5776fca3 | 1207 | pstate->lexptr++; |
3ed9baed IB |
1208 | return c; |
1209 | ||
1210 | case '\'': | |
1211 | case '"': | |
1212 | case '`': | |
1213 | { | |
1214 | int host_len; | |
5776fca3 TT |
1215 | int result = parse_string_or_char (tokstart, &pstate->lexptr, |
1216 | &yylval.tsval, &host_len); | |
3ed9baed IB |
1217 | if (result == CHARACTER_LITERAL) |
1218 | { | |
1219 | if (host_len == 0) | |
1220 | error (_("Empty character constant.")); | |
1221 | else if (host_len > 2 && c == '\'') | |
1222 | { | |
1223 | ++tokstart; | |
5776fca3 | 1224 | namelen = pstate->lexptr - tokstart - 1; |
3ed9baed IB |
1225 | goto tryname; |
1226 | } | |
1227 | else if (host_len > 1) | |
1228 | error (_("Invalid character constant.")); | |
1229 | } | |
1230 | return result; | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | if (!(c == '_' || c == '$' | |
1235 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
1236 | /* We must have come across a bad character (e.g. ';'). */ | |
1237 | error (_("Invalid character '%c' in expression"), c); | |
1238 | ||
1239 | /* It's a name. See how long it is. */ | |
1240 | namelen = 0; | |
1241 | for (c = tokstart[namelen]; | |
1242 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
1243 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));) | |
1244 | c = tokstart[++namelen]; | |
1245 | ||
1246 | /* The token "if" terminates the expression and is NOT | |
1247 | removed from the input stream. */ | |
1248 | if (namelen == 2 && tokstart[0] == 'i' && tokstart[1] == 'f') | |
1249 | return 0; | |
1250 | ||
1251 | /* For the same reason (breakpoint conditions), "thread N" | |
1252 | terminates the expression. "thread" could be an identifier, but | |
1253 | an identifier is never followed by a number without intervening | |
1254 | punctuation. "task" is similar. Handle abbreviations of these, | |
1255 | similarly to breakpoint.c:find_condition_and_thread. */ | |
1256 | if (namelen >= 1 | |
1257 | && (strncmp (tokstart, "thread", namelen) == 0 | |
1258 | || strncmp (tokstart, "task", namelen) == 0) | |
1259 | && (tokstart[namelen] == ' ' || tokstart[namelen] == '\t')) | |
1260 | { | |
1261 | const char *p = tokstart + namelen + 1; | |
1262 | ||
1263 | while (*p == ' ' || *p == '\t') | |
dda83cd7 | 1264 | p++; |
3ed9baed | 1265 | if (*p >= '0' && *p <= '9') |
dda83cd7 | 1266 | return 0; |
3ed9baed IB |
1267 | } |
1268 | ||
5776fca3 | 1269 | pstate->lexptr += namelen; |
3ed9baed IB |
1270 | |
1271 | tryname: | |
1272 | ||
1273 | yylval.sval.ptr = tokstart; | |
1274 | yylval.sval.length = namelen; | |
1275 | ||
1276 | /* Catch specific keywords. */ | |
61f4b350 | 1277 | std::string copy = copy_name (yylval.sval); |
3ed9baed | 1278 | for (i = 0; i < sizeof ident_tokens / sizeof ident_tokens[0]; i++) |
61f4b350 | 1279 | if (copy == ident_tokens[i].oper) |
3ed9baed IB |
1280 | { |
1281 | /* It is ok to always set this, even though we don't always | |
1282 | strictly need to. */ | |
1283 | yylval.opcode = ident_tokens[i].opcode; | |
1284 | return ident_tokens[i].token; | |
1285 | } | |
1286 | ||
1287 | if (*tokstart == '$') | |
1288 | return DOLLAR_VARIABLE; | |
1289 | ||
1290 | yylval.tsym.type | |
73923d7e | 1291 | = language_lookup_primitive_type (par_state->language (), |
61f4b350 | 1292 | par_state->gdbarch (), copy.c_str ()); |
3ed9baed IB |
1293 | if (yylval.tsym.type != NULL) |
1294 | return TYPENAME; | |
1295 | ||
1296 | /* Input names that aren't symbols but ARE valid hex numbers, | |
1297 | when the input radix permits them, can be names or numbers | |
1298 | depending on the parse. Note we support radixes > 16 here. */ | |
1299 | if ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) | |
1300 | || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10)) | |
1301 | { | |
1302 | YYSTYPE newlval; /* Its value is ignored. */ | |
444c1ed8 | 1303 | int hextype = parse_number (par_state, tokstart, namelen, 0, &newlval); |
3ed9baed IB |
1304 | if (hextype == INTEGER_LITERAL) |
1305 | return NAME_OR_INT; | |
1306 | } | |
1307 | ||
2a612529 | 1308 | if (pstate->parse_completion && *pstate->lexptr == '\0') |
3ed9baed IB |
1309 | saw_name_at_eof = 1; |
1310 | ||
1311 | return IDENTIFIER; | |
1312 | } | |
1313 | ||
444c1ed8 | 1314 | /* An object of this type is pushed on a FIFO by the "outer" lexer. */ |
5fe3f3e4 | 1315 | struct token_and_value |
444c1ed8 IB |
1316 | { |
1317 | int token; | |
1318 | YYSTYPE value; | |
5fe3f3e4 | 1319 | }; |
444c1ed8 | 1320 | |
444c1ed8 IB |
1321 | |
1322 | /* A FIFO of tokens that have been read but not yet returned to the | |
1323 | parser. */ | |
5fe3f3e4 | 1324 | static std::vector<token_and_value> token_fifo; |
444c1ed8 IB |
1325 | |
1326 | /* Non-zero if the lexer should return tokens from the FIFO. */ | |
1327 | static int popping; | |
1328 | ||
1329 | /* Temporary storage for yylex; this holds symbol names as they are | |
1330 | built up. */ | |
8268c778 | 1331 | static auto_obstack name_obstack; |
444c1ed8 IB |
1332 | |
1333 | /* Classify an IDENTIFIER token. The contents of the token are in `yylval'. | |
1334 | Updates yylval and returns the new token type. BLOCK is the block | |
1335 | in which lookups start; this can be NULL to mean the global scope. */ | |
1336 | ||
1337 | static int | |
1338 | classify_name (struct parser_state *par_state, const struct block *block) | |
1339 | { | |
1340 | struct block_symbol sym; | |
444c1ed8 IB |
1341 | struct field_of_this_result is_a_field_of_this; |
1342 | ||
61f4b350 | 1343 | std::string copy = copy_name (yylval.sval); |
444c1ed8 | 1344 | |
61f4b350 | 1345 | sym = lookup_symbol (copy.c_str (), block, VAR_DOMAIN, &is_a_field_of_this); |
444c1ed8 IB |
1346 | if (sym.symbol && SYMBOL_CLASS (sym.symbol) == LOC_TYPEDEF) |
1347 | { | |
1348 | yylval.tsym.type = SYMBOL_TYPE (sym.symbol); | |
1349 | return TYPENAME; | |
1350 | } | |
1351 | else if (sym.symbol == NULL) | |
1352 | { | |
1353 | /* Look-up first for a module name, then a type. */ | |
61f4b350 | 1354 | sym = lookup_symbol (copy.c_str (), block, MODULE_DOMAIN, NULL); |
444c1ed8 | 1355 | if (sym.symbol == NULL) |
61f4b350 | 1356 | sym = lookup_symbol (copy.c_str (), block, STRUCT_DOMAIN, NULL); |
444c1ed8 IB |
1357 | |
1358 | if (sym.symbol != NULL) | |
1359 | { | |
1360 | yylval.tsym.type = SYMBOL_TYPE (sym.symbol); | |
1361 | return TYPENAME; | |
1362 | } | |
1363 | ||
1364 | return UNKNOWN_NAME; | |
1365 | } | |
1366 | ||
1367 | return IDENTIFIER; | |
1368 | } | |
1369 | ||
1370 | /* Like classify_name, but used by the inner loop of the lexer, when a | |
1371 | name might have already been seen. CONTEXT is the context type, or | |
1372 | NULL if this is the first component of a name. */ | |
1373 | ||
1374 | static int | |
1375 | classify_inner_name (struct parser_state *par_state, | |
1376 | const struct block *block, struct type *context) | |
1377 | { | |
1378 | struct type *type; | |
444c1ed8 IB |
1379 | |
1380 | if (context == NULL) | |
1381 | return classify_name (par_state, block); | |
1382 | ||
1383 | type = check_typedef (context); | |
7f3706eb IB |
1384 | if (!type_aggregate_p (type)) |
1385 | return ERROR; | |
444c1ed8 | 1386 | |
61f4b350 TT |
1387 | std::string copy = copy_name (yylval.ssym.stoken); |
1388 | yylval.ssym.sym = d_lookup_nested_symbol (type, copy.c_str (), block); | |
444c1ed8 IB |
1389 | |
1390 | if (yylval.ssym.sym.symbol == NULL) | |
1391 | return ERROR; | |
1392 | ||
1393 | if (SYMBOL_CLASS (yylval.ssym.sym.symbol) == LOC_TYPEDEF) | |
1394 | { | |
1395 | yylval.tsym.type = SYMBOL_TYPE (yylval.ssym.sym.symbol); | |
1396 | return TYPENAME; | |
1397 | } | |
1398 | ||
1399 | return IDENTIFIER; | |
1400 | } | |
1401 | ||
1402 | /* The outer level of a two-level lexer. This calls the inner lexer | |
1403 | to return tokens. It then either returns these tokens, or | |
1404 | aggregates them into a larger token. This lets us work around a | |
1405 | problem in our parsing approach, where the parser could not | |
1406 | distinguish between qualified names and qualified types at the | |
1407 | right point. */ | |
1408 | ||
1409 | static int | |
1410 | yylex (void) | |
1411 | { | |
1412 | token_and_value current; | |
1413 | int last_was_dot; | |
1414 | struct type *context_type = NULL; | |
1415 | int last_to_examine, next_to_examine, checkpoint; | |
1416 | const struct block *search_block; | |
1417 | ||
5fe3f3e4 | 1418 | if (popping && !token_fifo.empty ()) |
444c1ed8 IB |
1419 | goto do_pop; |
1420 | popping = 0; | |
1421 | ||
1422 | /* Read the first token and decide what to do. */ | |
1423 | current.token = lex_one_token (pstate); | |
1424 | if (current.token != IDENTIFIER && current.token != '.') | |
1425 | return current.token; | |
1426 | ||
1427 | /* Read any sequence of alternating "." and identifier tokens into | |
1428 | the token FIFO. */ | |
1429 | current.value = yylval; | |
5fe3f3e4 | 1430 | token_fifo.push_back (current); |
444c1ed8 IB |
1431 | last_was_dot = current.token == '.'; |
1432 | ||
1433 | while (1) | |
1434 | { | |
1435 | current.token = lex_one_token (pstate); | |
1436 | current.value = yylval; | |
5fe3f3e4 | 1437 | token_fifo.push_back (current); |
444c1ed8 IB |
1438 | |
1439 | if ((last_was_dot && current.token != IDENTIFIER) | |
1440 | || (!last_was_dot && current.token != '.')) | |
1441 | break; | |
1442 | ||
1443 | last_was_dot = !last_was_dot; | |
1444 | } | |
1445 | popping = 1; | |
1446 | ||
1447 | /* We always read one extra token, so compute the number of tokens | |
1448 | to examine accordingly. */ | |
5fe3f3e4 | 1449 | last_to_examine = token_fifo.size () - 2; |
444c1ed8 IB |
1450 | next_to_examine = 0; |
1451 | ||
5fe3f3e4 | 1452 | current = token_fifo[next_to_examine]; |
444c1ed8 IB |
1453 | ++next_to_examine; |
1454 | ||
1455 | /* If we are not dealing with a typename, now is the time to find out. */ | |
1456 | if (current.token == IDENTIFIER) | |
1457 | { | |
1458 | yylval = current.value; | |
1e58a4a4 | 1459 | current.token = classify_name (pstate, pstate->expression_context_block); |
444c1ed8 IB |
1460 | current.value = yylval; |
1461 | } | |
1462 | ||
1463 | /* If the IDENTIFIER is not known, it could be a package symbol, | |
1464 | first try building up a name until we find the qualified module. */ | |
1465 | if (current.token == UNKNOWN_NAME) | |
1466 | { | |
8268c778 | 1467 | name_obstack.clear (); |
444c1ed8 IB |
1468 | obstack_grow (&name_obstack, current.value.sval.ptr, |
1469 | current.value.sval.length); | |
1470 | ||
1471 | last_was_dot = 0; | |
1472 | ||
1473 | while (next_to_examine <= last_to_examine) | |
1474 | { | |
5fe3f3e4 | 1475 | token_and_value next; |
444c1ed8 | 1476 | |
5fe3f3e4 | 1477 | next = token_fifo[next_to_examine]; |
444c1ed8 IB |
1478 | ++next_to_examine; |
1479 | ||
5fe3f3e4 | 1480 | if (next.token == IDENTIFIER && last_was_dot) |
444c1ed8 IB |
1481 | { |
1482 | /* Update the partial name we are constructing. */ | |
dda83cd7 | 1483 | obstack_grow_str (&name_obstack, "."); |
5fe3f3e4 TT |
1484 | obstack_grow (&name_obstack, next.value.sval.ptr, |
1485 | next.value.sval.length); | |
444c1ed8 | 1486 | |
79f33898 | 1487 | yylval.sval.ptr = (char *) obstack_base (&name_obstack); |
444c1ed8 IB |
1488 | yylval.sval.length = obstack_object_size (&name_obstack); |
1489 | ||
1e58a4a4 TT |
1490 | current.token = classify_name (pstate, |
1491 | pstate->expression_context_block); | |
444c1ed8 IB |
1492 | current.value = yylval; |
1493 | ||
1494 | /* We keep going until we find a TYPENAME. */ | |
1495 | if (current.token == TYPENAME) | |
1496 | { | |
1497 | /* Install it as the first token in the FIFO. */ | |
5fe3f3e4 TT |
1498 | token_fifo[0] = current; |
1499 | token_fifo.erase (token_fifo.begin () + 1, | |
1500 | token_fifo.begin () + next_to_examine); | |
444c1ed8 IB |
1501 | break; |
1502 | } | |
1503 | } | |
5fe3f3e4 | 1504 | else if (next.token == '.' && !last_was_dot) |
444c1ed8 IB |
1505 | last_was_dot = 1; |
1506 | else | |
1507 | { | |
1508 | /* We've reached the end of the name. */ | |
1509 | break; | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | /* Reset our current token back to the start, if we found nothing | |
1514 | this means that we will just jump to do pop. */ | |
5fe3f3e4 | 1515 | current = token_fifo[0]; |
444c1ed8 IB |
1516 | next_to_examine = 1; |
1517 | } | |
1518 | if (current.token != TYPENAME && current.token != '.') | |
1519 | goto do_pop; | |
1520 | ||
8268c778 | 1521 | name_obstack.clear (); |
444c1ed8 IB |
1522 | checkpoint = 0; |
1523 | if (current.token == '.') | |
1524 | search_block = NULL; | |
1525 | else | |
1526 | { | |
1527 | gdb_assert (current.token == TYPENAME); | |
1e58a4a4 | 1528 | search_block = pstate->expression_context_block; |
444c1ed8 IB |
1529 | obstack_grow (&name_obstack, current.value.sval.ptr, |
1530 | current.value.sval.length); | |
1531 | context_type = current.value.tsym.type; | |
1532 | checkpoint = 1; | |
1533 | } | |
1534 | ||
1535 | last_was_dot = current.token == '.'; | |
1536 | ||
1537 | while (next_to_examine <= last_to_examine) | |
1538 | { | |
5fe3f3e4 | 1539 | token_and_value next; |
444c1ed8 | 1540 | |
5fe3f3e4 | 1541 | next = token_fifo[next_to_examine]; |
444c1ed8 IB |
1542 | ++next_to_examine; |
1543 | ||
5fe3f3e4 | 1544 | if (next.token == IDENTIFIER && last_was_dot) |
444c1ed8 IB |
1545 | { |
1546 | int classification; | |
1547 | ||
5fe3f3e4 | 1548 | yylval = next.value; |
444c1ed8 IB |
1549 | classification = classify_inner_name (pstate, search_block, |
1550 | context_type); | |
1551 | /* We keep going until we either run out of names, or until | |
1552 | we have a qualified name which is not a type. */ | |
1553 | if (classification != TYPENAME && classification != IDENTIFIER) | |
1554 | break; | |
1555 | ||
1556 | /* Accept up to this token. */ | |
1557 | checkpoint = next_to_examine; | |
1558 | ||
1559 | /* Update the partial name we are constructing. */ | |
1560 | if (context_type != NULL) | |
1561 | { | |
1562 | /* We don't want to put a leading "." into the name. */ | |
dda83cd7 | 1563 | obstack_grow_str (&name_obstack, "."); |
444c1ed8 | 1564 | } |
5fe3f3e4 TT |
1565 | obstack_grow (&name_obstack, next.value.sval.ptr, |
1566 | next.value.sval.length); | |
444c1ed8 | 1567 | |
79f33898 | 1568 | yylval.sval.ptr = (char *) obstack_base (&name_obstack); |
444c1ed8 IB |
1569 | yylval.sval.length = obstack_object_size (&name_obstack); |
1570 | current.value = yylval; | |
1571 | current.token = classification; | |
1572 | ||
1573 | last_was_dot = 0; | |
1574 | ||
1575 | if (classification == IDENTIFIER) | |
1576 | break; | |
1577 | ||
1578 | context_type = yylval.tsym.type; | |
1579 | } | |
5fe3f3e4 | 1580 | else if (next.token == '.' && !last_was_dot) |
444c1ed8 IB |
1581 | last_was_dot = 1; |
1582 | else | |
1583 | { | |
1584 | /* We've reached the end of the name. */ | |
1585 | break; | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | /* If we have a replacement token, install it as the first token in | |
1590 | the FIFO, and delete the other constituent tokens. */ | |
1591 | if (checkpoint > 0) | |
1592 | { | |
5fe3f3e4 | 1593 | token_fifo[0] = current; |
444c1ed8 | 1594 | if (checkpoint > 1) |
5fe3f3e4 TT |
1595 | token_fifo.erase (token_fifo.begin () + 1, |
1596 | token_fifo.begin () + checkpoint); | |
444c1ed8 IB |
1597 | } |
1598 | ||
1599 | do_pop: | |
5fe3f3e4 TT |
1600 | current = token_fifo[0]; |
1601 | token_fifo.erase (token_fifo.begin ()); | |
444c1ed8 IB |
1602 | yylval = current.value; |
1603 | return current.token; | |
1604 | } | |
1605 | ||
3ed9baed IB |
1606 | int |
1607 | d_parse (struct parser_state *par_state) | |
1608 | { | |
3ed9baed | 1609 | /* Setting up the parser state. */ |
eae49211 | 1610 | scoped_restore pstate_restore = make_scoped_restore (&pstate); |
3ed9baed IB |
1611 | gdb_assert (par_state != NULL); |
1612 | pstate = par_state; | |
1613 | ||
156d9eab TT |
1614 | scoped_restore restore_yydebug = make_scoped_restore (&yydebug, |
1615 | parser_debug); | |
3ed9baed | 1616 | |
dac43e32 TT |
1617 | struct type_stack stack; |
1618 | scoped_restore restore_type_stack = make_scoped_restore (&type_stack, | |
1619 | &stack); | |
1620 | ||
3ed9baed IB |
1621 | /* Initialize some state used by the lexer. */ |
1622 | last_was_structop = 0; | |
1623 | saw_name_at_eof = 0; | |
28aaf3fd | 1624 | paren_depth = 0; |
3ed9baed | 1625 | |
5fe3f3e4 | 1626 | token_fifo.clear (); |
444c1ed8 | 1627 | popping = 0; |
8268c778 | 1628 | name_obstack.clear (); |
444c1ed8 | 1629 | |
9412fdcc TT |
1630 | int result = yyparse (); |
1631 | if (!result) | |
1632 | pstate->set_operation (pstate->pop ()); | |
1633 | return result; | |
3ed9baed IB |
1634 | } |
1635 | ||
69d340c6 | 1636 | static void |
a121b7c1 | 1637 | yyerror (const char *msg) |
3ed9baed | 1638 | { |
5776fca3 TT |
1639 | if (pstate->prev_lexptr) |
1640 | pstate->lexptr = pstate->prev_lexptr; | |
3ed9baed | 1641 | |
5776fca3 | 1642 | error (_("A %s in expression, near `%s'."), msg, pstate->lexptr); |
3ed9baed IB |
1643 | } |
1644 |