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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" |
3ed9baed | 55 | |
fa9f5be6 TT |
56 | #define parse_type(ps) builtin_type (ps->gdbarch ()) |
57 | #define parse_d_type(ps) builtin_d_type (ps->gdbarch ()) | |
3ed9baed | 58 | |
b3f11165 PA |
59 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, |
60 | etc). */ | |
61 | #define GDB_YY_REMAP_PREFIX d_ | |
62 | #include "yy-remap.h" | |
3ed9baed IB |
63 | |
64 | /* The state of the parser, used internally when we are parsing the | |
65 | expression. */ | |
66 | ||
67 | static struct parser_state *pstate = NULL; | |
68 | ||
dac43e32 TT |
69 | /* The current type stack. */ |
70 | static struct type_stack *type_stack; | |
71 | ||
3ed9baed IB |
72 | int yyparse (void); |
73 | ||
74 | static int yylex (void); | |
75 | ||
69d340c6 | 76 | static void yyerror (const char *); |
3ed9baed | 77 | |
7f3706eb IB |
78 | static int type_aggregate_p (struct type *); |
79 | ||
3ed9baed IB |
80 | %} |
81 | ||
82 | /* Although the yacc "value" of an expression is not used, | |
83 | since the result is stored in the structure being created, | |
84 | other node types do have values. */ | |
85 | ||
86 | %union | |
87 | { | |
88 | struct { | |
89 | LONGEST val; | |
90 | struct type *type; | |
91 | } typed_val_int; | |
92 | struct { | |
edd079d9 | 93 | gdb_byte val[16]; |
3ed9baed IB |
94 | struct type *type; |
95 | } typed_val_float; | |
96 | struct symbol *sym; | |
97 | struct type *tval; | |
98 | struct typed_stoken tsval; | |
99 | struct stoken sval; | |
100 | struct ttype tsym; | |
101 | struct symtoken ssym; | |
102 | int ival; | |
444c1ed8 | 103 | int voidval; |
3ed9baed IB |
104 | enum exp_opcode opcode; |
105 | struct stoken_vector svec; | |
106 | } | |
107 | ||
108 | %{ | |
109 | /* YYSTYPE gets defined by %union */ | |
110 | static int parse_number (struct parser_state *, const char *, | |
111 | int, int, YYSTYPE *); | |
3ed9baed IB |
112 | %} |
113 | ||
444c1ed8 | 114 | %token <sval> IDENTIFIER UNKNOWN_NAME |
3ed9baed IB |
115 | %token <tsym> TYPENAME |
116 | %token <voidval> COMPLETE | |
117 | ||
118 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, | |
119 | but which would parse as a valid number in the current input radix. | |
120 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
121 | turned into a name or into a number. */ | |
122 | ||
123 | %token <sval> NAME_OR_INT | |
124 | ||
125 | %token <typed_val_int> INTEGER_LITERAL | |
126 | %token <typed_val_float> FLOAT_LITERAL | |
127 | %token <tsval> CHARACTER_LITERAL | |
128 | %token <tsval> STRING_LITERAL | |
129 | ||
130 | %type <svec> StringExp | |
131 | %type <tval> BasicType TypeExp | |
132 | %type <sval> IdentifierExp | |
133 | %type <ival> ArrayLiteral | |
134 | ||
135 | %token ENTRY | |
136 | %token ERROR | |
137 | ||
138 | /* Keywords that have a constant value. */ | |
139 | %token TRUE_KEYWORD FALSE_KEYWORD NULL_KEYWORD | |
140 | /* Class 'super' accessor. */ | |
141 | %token SUPER_KEYWORD | |
142 | /* Properties. */ | |
143 | %token CAST_KEYWORD SIZEOF_KEYWORD | |
144 | %token TYPEOF_KEYWORD TYPEID_KEYWORD | |
145 | %token INIT_KEYWORD | |
146 | /* Comparison keywords. */ | |
147 | /* Type storage classes. */ | |
148 | %token IMMUTABLE_KEYWORD CONST_KEYWORD SHARED_KEYWORD | |
149 | /* Non-scalar type keywords. */ | |
150 | %token STRUCT_KEYWORD UNION_KEYWORD | |
151 | %token CLASS_KEYWORD INTERFACE_KEYWORD | |
152 | %token ENUM_KEYWORD TEMPLATE_KEYWORD | |
153 | %token DELEGATE_KEYWORD FUNCTION_KEYWORD | |
154 | ||
155 | %token <sval> DOLLAR_VARIABLE | |
156 | ||
157 | %token <opcode> ASSIGN_MODIFY | |
158 | ||
159 | %left ',' | |
160 | %right '=' ASSIGN_MODIFY | |
161 | %right '?' | |
162 | %left OROR | |
163 | %left ANDAND | |
164 | %left '|' | |
165 | %left '^' | |
166 | %left '&' | |
167 | %left EQUAL NOTEQUAL '<' '>' LEQ GEQ | |
168 | %right LSH RSH | |
169 | %left '+' '-' | |
170 | %left '*' '/' '%' | |
171 | %right HATHAT | |
172 | %left IDENTITY NOTIDENTITY | |
173 | %right INCREMENT DECREMENT | |
174 | %right '.' '[' '(' | |
175 | %token DOTDOT | |
176 | ||
177 | \f | |
178 | %% | |
179 | ||
180 | start : | |
181 | Expression | |
182 | | TypeExp | |
183 | ; | |
184 | ||
185 | /* Expressions, including the comma operator. */ | |
186 | ||
187 | Expression: | |
188 | CommaExpression | |
189 | ; | |
190 | ||
191 | CommaExpression: | |
192 | AssignExpression | |
193 | | AssignExpression ',' CommaExpression | |
194 | { write_exp_elt_opcode (pstate, BINOP_COMMA); } | |
195 | ; | |
196 | ||
197 | AssignExpression: | |
198 | ConditionalExpression | |
199 | | ConditionalExpression '=' AssignExpression | |
200 | { write_exp_elt_opcode (pstate, BINOP_ASSIGN); } | |
201 | | ConditionalExpression ASSIGN_MODIFY AssignExpression | |
202 | { write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY); | |
203 | write_exp_elt_opcode (pstate, $2); | |
204 | write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY); } | |
205 | ; | |
206 | ||
207 | ConditionalExpression: | |
208 | OrOrExpression | |
209 | | OrOrExpression '?' Expression ':' ConditionalExpression | |
210 | { write_exp_elt_opcode (pstate, TERNOP_COND); } | |
211 | ; | |
212 | ||
213 | OrOrExpression: | |
214 | AndAndExpression | |
215 | | OrOrExpression OROR AndAndExpression | |
216 | { write_exp_elt_opcode (pstate, BINOP_LOGICAL_OR); } | |
217 | ; | |
218 | ||
219 | AndAndExpression: | |
220 | OrExpression | |
221 | | AndAndExpression ANDAND OrExpression | |
222 | { write_exp_elt_opcode (pstate, BINOP_LOGICAL_AND); } | |
223 | ; | |
224 | ||
225 | OrExpression: | |
226 | XorExpression | |
227 | | OrExpression '|' XorExpression | |
228 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_IOR); } | |
229 | ; | |
230 | ||
231 | XorExpression: | |
232 | AndExpression | |
233 | | XorExpression '^' AndExpression | |
234 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_XOR); } | |
235 | ; | |
236 | ||
237 | AndExpression: | |
238 | CmpExpression | |
239 | | AndExpression '&' CmpExpression | |
240 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_AND); } | |
241 | ; | |
242 | ||
243 | CmpExpression: | |
244 | ShiftExpression | |
245 | | EqualExpression | |
246 | | IdentityExpression | |
247 | | RelExpression | |
248 | ; | |
249 | ||
250 | EqualExpression: | |
251 | ShiftExpression EQUAL ShiftExpression | |
252 | { write_exp_elt_opcode (pstate, BINOP_EQUAL); } | |
253 | | ShiftExpression NOTEQUAL ShiftExpression | |
254 | { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); } | |
255 | ; | |
256 | ||
257 | IdentityExpression: | |
258 | ShiftExpression IDENTITY ShiftExpression | |
259 | { write_exp_elt_opcode (pstate, BINOP_EQUAL); } | |
260 | | ShiftExpression NOTIDENTITY ShiftExpression | |
261 | { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); } | |
262 | ; | |
263 | ||
264 | RelExpression: | |
265 | ShiftExpression '<' ShiftExpression | |
266 | { write_exp_elt_opcode (pstate, BINOP_LESS); } | |
267 | | ShiftExpression LEQ ShiftExpression | |
268 | { write_exp_elt_opcode (pstate, BINOP_LEQ); } | |
269 | | ShiftExpression '>' ShiftExpression | |
270 | { write_exp_elt_opcode (pstate, BINOP_GTR); } | |
271 | | ShiftExpression GEQ ShiftExpression | |
272 | { write_exp_elt_opcode (pstate, BINOP_GEQ); } | |
273 | ; | |
274 | ||
275 | ShiftExpression: | |
276 | AddExpression | |
277 | | ShiftExpression LSH AddExpression | |
278 | { write_exp_elt_opcode (pstate, BINOP_LSH); } | |
279 | | ShiftExpression RSH AddExpression | |
280 | { write_exp_elt_opcode (pstate, BINOP_RSH); } | |
281 | ; | |
282 | ||
283 | AddExpression: | |
284 | MulExpression | |
285 | | AddExpression '+' MulExpression | |
286 | { write_exp_elt_opcode (pstate, BINOP_ADD); } | |
287 | | AddExpression '-' MulExpression | |
288 | { write_exp_elt_opcode (pstate, BINOP_SUB); } | |
289 | | AddExpression '~' MulExpression | |
290 | { write_exp_elt_opcode (pstate, BINOP_CONCAT); } | |
291 | ; | |
292 | ||
293 | MulExpression: | |
294 | UnaryExpression | |
295 | | MulExpression '*' UnaryExpression | |
296 | { write_exp_elt_opcode (pstate, BINOP_MUL); } | |
297 | | MulExpression '/' UnaryExpression | |
298 | { write_exp_elt_opcode (pstate, BINOP_DIV); } | |
299 | | MulExpression '%' UnaryExpression | |
300 | { write_exp_elt_opcode (pstate, BINOP_REM); } | |
301 | ||
302 | UnaryExpression: | |
303 | '&' UnaryExpression | |
304 | { write_exp_elt_opcode (pstate, UNOP_ADDR); } | |
305 | | INCREMENT UnaryExpression | |
306 | { write_exp_elt_opcode (pstate, UNOP_PREINCREMENT); } | |
307 | | DECREMENT UnaryExpression | |
308 | { write_exp_elt_opcode (pstate, UNOP_PREDECREMENT); } | |
309 | | '*' UnaryExpression | |
310 | { write_exp_elt_opcode (pstate, UNOP_IND); } | |
311 | | '-' UnaryExpression | |
312 | { write_exp_elt_opcode (pstate, UNOP_NEG); } | |
313 | | '+' UnaryExpression | |
314 | { write_exp_elt_opcode (pstate, UNOP_PLUS); } | |
315 | | '!' UnaryExpression | |
316 | { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); } | |
317 | | '~' UnaryExpression | |
318 | { write_exp_elt_opcode (pstate, UNOP_COMPLEMENT); } | |
d5d8c4e1 IB |
319 | | TypeExp '.' SIZEOF_KEYWORD |
320 | { write_exp_elt_opcode (pstate, UNOP_SIZEOF); } | |
3ed9baed IB |
321 | | CastExpression |
322 | | PowExpression | |
323 | ; | |
324 | ||
325 | CastExpression: | |
326 | CAST_KEYWORD '(' TypeExp ')' UnaryExpression | |
f5e6296e | 327 | { write_exp_elt_opcode (pstate, UNOP_CAST_TYPE); } |
3ed9baed IB |
328 | /* C style cast is illegal D, but is still recognised in |
329 | the grammar, so we keep this around for convenience. */ | |
330 | | '(' TypeExp ')' UnaryExpression | |
f5e6296e IB |
331 | { write_exp_elt_opcode (pstate, UNOP_CAST_TYPE); } |
332 | ||
3ed9baed IB |
333 | ; |
334 | ||
335 | PowExpression: | |
336 | PostfixExpression | |
337 | | PostfixExpression HATHAT UnaryExpression | |
338 | { write_exp_elt_opcode (pstate, BINOP_EXP); } | |
339 | ; | |
340 | ||
341 | PostfixExpression: | |
342 | PrimaryExpression | |
444c1ed8 IB |
343 | | PostfixExpression '.' COMPLETE |
344 | { struct stoken s; | |
2a612529 | 345 | pstate->mark_struct_expression (); |
444c1ed8 IB |
346 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
347 | s.ptr = ""; | |
348 | s.length = 0; | |
349 | write_exp_string (pstate, s); | |
350 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
351 | | PostfixExpression '.' IDENTIFIER | |
352 | { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
353 | write_exp_string (pstate, $3); | |
354 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
355 | | PostfixExpression '.' IDENTIFIER COMPLETE | |
2a612529 | 356 | { pstate->mark_struct_expression (); |
444c1ed8 IB |
357 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
358 | write_exp_string (pstate, $3); | |
359 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
d5d8c4e1 IB |
360 | | PostfixExpression '.' SIZEOF_KEYWORD |
361 | { write_exp_elt_opcode (pstate, UNOP_SIZEOF); } | |
3ed9baed IB |
362 | | PostfixExpression INCREMENT |
363 | { write_exp_elt_opcode (pstate, UNOP_POSTINCREMENT); } | |
364 | | PostfixExpression DECREMENT | |
365 | { write_exp_elt_opcode (pstate, UNOP_POSTDECREMENT); } | |
366 | | CallExpression | |
367 | | IndexExpression | |
368 | | SliceExpression | |
369 | ; | |
370 | ||
371 | ArgumentList: | |
372 | AssignExpression | |
43476f0b | 373 | { pstate->arglist_len = 1; } |
3ed9baed | 374 | | ArgumentList ',' AssignExpression |
43476f0b | 375 | { pstate->arglist_len++; } |
3ed9baed IB |
376 | ; |
377 | ||
378 | ArgumentList_opt: | |
379 | /* EMPTY */ | |
43476f0b | 380 | { pstate->arglist_len = 0; } |
3ed9baed IB |
381 | | ArgumentList |
382 | ; | |
383 | ||
384 | CallExpression: | |
385 | PostfixExpression '(' | |
43476f0b | 386 | { pstate->start_arglist (); } |
3ed9baed IB |
387 | ArgumentList_opt ')' |
388 | { write_exp_elt_opcode (pstate, OP_FUNCALL); | |
43476f0b | 389 | write_exp_elt_longcst (pstate, pstate->end_arglist ()); |
3ed9baed IB |
390 | write_exp_elt_opcode (pstate, OP_FUNCALL); } |
391 | ; | |
392 | ||
393 | IndexExpression: | |
394 | PostfixExpression '[' ArgumentList ']' | |
43476f0b | 395 | { if (pstate->arglist_len > 0) |
3ed9baed IB |
396 | { |
397 | write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT); | |
43476f0b | 398 | write_exp_elt_longcst (pstate, pstate->arglist_len); |
3ed9baed IB |
399 | write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT); |
400 | } | |
401 | else | |
402 | write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT); | |
403 | } | |
404 | ; | |
405 | ||
406 | SliceExpression: | |
407 | PostfixExpression '[' ']' | |
408 | { /* Do nothing. */ } | |
409 | | PostfixExpression '[' AssignExpression DOTDOT AssignExpression ']' | |
410 | { write_exp_elt_opcode (pstate, TERNOP_SLICE); } | |
411 | ; | |
412 | ||
413 | PrimaryExpression: | |
414 | '(' Expression ')' | |
415 | { /* Do nothing. */ } | |
416 | | IdentifierExp | |
444c1ed8 | 417 | { struct bound_minimal_symbol msymbol; |
61f4b350 | 418 | std::string copy = copy_name ($1); |
444c1ed8 IB |
419 | struct field_of_this_result is_a_field_of_this; |
420 | struct block_symbol sym; | |
421 | ||
422 | /* Handle VAR, which could be local or global. */ | |
61f4b350 TT |
423 | sym = lookup_symbol (copy.c_str (), |
424 | pstate->expression_context_block, | |
1e58a4a4 | 425 | VAR_DOMAIN, &is_a_field_of_this); |
444c1ed8 IB |
426 | if (sym.symbol && SYMBOL_CLASS (sym.symbol) != LOC_TYPEDEF) |
427 | { | |
428 | if (symbol_read_needs_frame (sym.symbol)) | |
699bd4cf | 429 | pstate->block_tracker->update (sym); |
444c1ed8 | 430 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
2d5a88dc | 431 | write_exp_elt_block (pstate, sym.block); |
444c1ed8 IB |
432 | write_exp_elt_sym (pstate, sym.symbol); |
433 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); | |
434 | } | |
435 | else if (is_a_field_of_this.type != NULL) | |
436 | { | |
437 | /* It hangs off of `this'. Must not inadvertently convert from a | |
438 | method call to data ref. */ | |
699bd4cf | 439 | pstate->block_tracker->update (sym); |
444c1ed8 IB |
440 | write_exp_elt_opcode (pstate, OP_THIS); |
441 | write_exp_elt_opcode (pstate, OP_THIS); | |
442 | write_exp_elt_opcode (pstate, STRUCTOP_PTR); | |
443 | write_exp_string (pstate, $1); | |
444 | write_exp_elt_opcode (pstate, STRUCTOP_PTR); | |
445 | } | |
446 | else | |
447 | { | |
448 | /* Lookup foreign name in global static symbols. */ | |
61f4b350 | 449 | msymbol = lookup_bound_minimal_symbol (copy.c_str ()); |
444c1ed8 IB |
450 | if (msymbol.minsym != NULL) |
451 | write_exp_msymbol (pstate, msymbol); | |
452 | else if (!have_full_symbols () && !have_partial_symbols ()) | |
453 | error (_("No symbol table is loaded. Use the \"file\" command")); | |
454 | else | |
61f4b350 TT |
455 | error (_("No symbol \"%s\" in current context."), |
456 | copy.c_str ()); | |
444c1ed8 IB |
457 | } |
458 | } | |
459 | | TypeExp '.' IdentifierExp | |
460 | { struct type *type = check_typedef ($1); | |
461 | ||
462 | /* Check if the qualified name is in the global | |
463 | context. However if the symbol has not already | |
464 | been resolved, it's not likely to be found. */ | |
78134374 | 465 | if (type->code () == TYPE_CODE_MODULE) |
444c1ed8 | 466 | { |
444c1ed8 | 467 | struct block_symbol sym; |
b56ccc20 KS |
468 | const char *type_name = TYPE_SAFE_NAME (type); |
469 | int type_name_len = strlen (type_name); | |
5613c585 TT |
470 | std::string name |
471 | = string_printf ("%.*s.%.*s", | |
b56ccc20 | 472 | type_name_len, type_name, |
c0fe2ae7 | 473 | $3.length, $3.ptr); |
444c1ed8 IB |
474 | |
475 | sym = | |
5613c585 TT |
476 | lookup_symbol (name.c_str (), |
477 | (const struct block *) NULL, | |
444c1ed8 | 478 | VAR_DOMAIN, NULL); |
1b30f421 TT |
479 | write_exp_symbol_reference (pstate, |
480 | name.c_str (), | |
481 | sym); | |
482 | } | |
483 | else | |
484 | { | |
485 | /* Check if the qualified name resolves as a member | |
486 | of an aggregate or an enum type. */ | |
487 | if (!type_aggregate_p (type)) | |
488 | error (_("`%s' is not defined as an aggregate type."), | |
489 | TYPE_SAFE_NAME (type)); | |
490 | ||
491 | write_exp_elt_opcode (pstate, OP_SCOPE); | |
492 | write_exp_elt_type (pstate, type); | |
493 | write_exp_string (pstate, $3); | |
494 | write_exp_elt_opcode (pstate, OP_SCOPE); | |
444c1ed8 | 495 | } |
444c1ed8 | 496 | } |
3ed9baed IB |
497 | | DOLLAR_VARIABLE |
498 | { write_dollar_variable (pstate, $1); } | |
499 | | NAME_OR_INT | |
500 | { YYSTYPE val; | |
dda83cd7 | 501 | parse_number (pstate, $1.ptr, $1.length, 0, &val); |
3ed9baed IB |
502 | write_exp_elt_opcode (pstate, OP_LONG); |
503 | write_exp_elt_type (pstate, val.typed_val_int.type); | |
504 | write_exp_elt_longcst (pstate, | |
505 | (LONGEST) val.typed_val_int.val); | |
506 | write_exp_elt_opcode (pstate, OP_LONG); } | |
507 | | NULL_KEYWORD | |
508 | { struct type *type = parse_d_type (pstate)->builtin_void; | |
509 | type = lookup_pointer_type (type); | |
510 | write_exp_elt_opcode (pstate, OP_LONG); | |
511 | write_exp_elt_type (pstate, type); | |
512 | write_exp_elt_longcst (pstate, (LONGEST) 0); | |
513 | write_exp_elt_opcode (pstate, OP_LONG); } | |
514 | | TRUE_KEYWORD | |
515 | { write_exp_elt_opcode (pstate, OP_BOOL); | |
516 | write_exp_elt_longcst (pstate, (LONGEST) 1); | |
517 | write_exp_elt_opcode (pstate, OP_BOOL); } | |
518 | | FALSE_KEYWORD | |
519 | { write_exp_elt_opcode (pstate, OP_BOOL); | |
520 | write_exp_elt_longcst (pstate, (LONGEST) 0); | |
521 | write_exp_elt_opcode (pstate, OP_BOOL); } | |
522 | | INTEGER_LITERAL | |
523 | { write_exp_elt_opcode (pstate, OP_LONG); | |
524 | write_exp_elt_type (pstate, $1.type); | |
525 | write_exp_elt_longcst (pstate, (LONGEST)($1.val)); | |
526 | write_exp_elt_opcode (pstate, OP_LONG); } | |
527 | | FLOAT_LITERAL | |
edd079d9 | 528 | { write_exp_elt_opcode (pstate, OP_FLOAT); |
3ed9baed | 529 | write_exp_elt_type (pstate, $1.type); |
edd079d9 UW |
530 | write_exp_elt_floatcst (pstate, $1.val); |
531 | write_exp_elt_opcode (pstate, OP_FLOAT); } | |
3ed9baed IB |
532 | | CHARACTER_LITERAL |
533 | { struct stoken_vector vec; | |
534 | vec.len = 1; | |
535 | vec.tokens = &$1; | |
536 | write_exp_string_vector (pstate, $1.type, &vec); } | |
537 | | StringExp | |
538 | { int i; | |
539 | write_exp_string_vector (pstate, 0, &$1); | |
540 | for (i = 0; i < $1.len; ++i) | |
541 | free ($1.tokens[i].ptr); | |
542 | free ($1.tokens); } | |
543 | | ArrayLiteral | |
544 | { write_exp_elt_opcode (pstate, OP_ARRAY); | |
545 | write_exp_elt_longcst (pstate, (LONGEST) 0); | |
546 | write_exp_elt_longcst (pstate, (LONGEST) $1 - 1); | |
547 | write_exp_elt_opcode (pstate, OP_ARRAY); } | |
d5d8c4e1 IB |
548 | | TYPEOF_KEYWORD '(' Expression ')' |
549 | { write_exp_elt_opcode (pstate, OP_TYPEOF); } | |
3ed9baed IB |
550 | ; |
551 | ||
552 | ArrayLiteral: | |
553 | '[' ArgumentList_opt ']' | |
43476f0b | 554 | { $$ = pstate->arglist_len; } |
3ed9baed IB |
555 | ; |
556 | ||
557 | IdentifierExp: | |
558 | IDENTIFIER | |
3ed9baed IB |
559 | ; |
560 | ||
561 | StringExp: | |
562 | STRING_LITERAL | |
563 | { /* We copy the string here, and not in the | |
564 | lexer, to guarantee that we do not leak a | |
565 | string. Note that we follow the | |
566 | NUL-termination convention of the | |
567 | lexer. */ | |
568 | struct typed_stoken *vec = XNEW (struct typed_stoken); | |
569 | $$.len = 1; | |
570 | $$.tokens = vec; | |
571 | ||
572 | vec->type = $1.type; | |
573 | vec->length = $1.length; | |
224c3ddb | 574 | vec->ptr = (char *) malloc ($1.length + 1); |
3ed9baed IB |
575 | memcpy (vec->ptr, $1.ptr, $1.length + 1); |
576 | } | |
577 | | StringExp STRING_LITERAL | |
578 | { /* Note that we NUL-terminate here, but just | |
579 | for convenience. */ | |
580 | char *p; | |
581 | ++$$.len; | |
224c3ddb SM |
582 | $$.tokens |
583 | = XRESIZEVEC (struct typed_stoken, $$.tokens, $$.len); | |
3ed9baed | 584 | |
224c3ddb | 585 | p = (char *) malloc ($2.length + 1); |
3ed9baed IB |
586 | memcpy (p, $2.ptr, $2.length + 1); |
587 | ||
588 | $$.tokens[$$.len - 1].type = $2.type; | |
589 | $$.tokens[$$.len - 1].length = $2.length; | |
590 | $$.tokens[$$.len - 1].ptr = p; | |
591 | } | |
592 | ; | |
593 | ||
594 | TypeExp: | |
444c1ed8 IB |
595 | '(' TypeExp ')' |
596 | { /* Do nothing. */ } | |
597 | | BasicType | |
3ed9baed IB |
598 | { write_exp_elt_opcode (pstate, OP_TYPE); |
599 | write_exp_elt_type (pstate, $1); | |
600 | write_exp_elt_opcode (pstate, OP_TYPE); } | |
601 | | BasicType BasicType2 | |
dac43e32 | 602 | { $$ = type_stack->follow_types ($1); |
3ed9baed IB |
603 | write_exp_elt_opcode (pstate, OP_TYPE); |
604 | write_exp_elt_type (pstate, $$); | |
605 | write_exp_elt_opcode (pstate, OP_TYPE); | |
606 | } | |
607 | ; | |
608 | ||
609 | BasicType2: | |
610 | '*' | |
dac43e32 | 611 | { type_stack->push (tp_pointer); } |
3ed9baed | 612 | | '*' BasicType2 |
dac43e32 | 613 | { type_stack->push (tp_pointer); } |
3ed9baed | 614 | | '[' INTEGER_LITERAL ']' |
dac43e32 TT |
615 | { type_stack->push ($2.val); |
616 | type_stack->push (tp_array); } | |
3ed9baed | 617 | | '[' INTEGER_LITERAL ']' BasicType2 |
dac43e32 TT |
618 | { type_stack->push ($2.val); |
619 | type_stack->push (tp_array); } | |
3ed9baed IB |
620 | ; |
621 | ||
622 | BasicType: | |
623 | TYPENAME | |
624 | { $$ = $1.type; } | |
3ed9baed IB |
625 | ; |
626 | ||
627 | %% | |
628 | ||
7f3706eb IB |
629 | /* Return true if the type is aggregate-like. */ |
630 | ||
631 | static int | |
632 | type_aggregate_p (struct type *type) | |
633 | { | |
78134374 SM |
634 | return (type->code () == TYPE_CODE_STRUCT |
635 | || type->code () == TYPE_CODE_UNION | |
636 | || type->code () == TYPE_CODE_MODULE | |
637 | || (type->code () == TYPE_CODE_ENUM | |
7f3706eb IB |
638 | && TYPE_DECLARED_CLASS (type))); |
639 | } | |
640 | ||
3ed9baed IB |
641 | /* Take care of parsing a number (anything that starts with a digit). |
642 | Set yylval and return the token type; update lexptr. | |
643 | LEN is the number of characters in it. */ | |
644 | ||
645 | /*** Needs some error checking for the float case ***/ | |
646 | ||
647 | static int | |
648 | parse_number (struct parser_state *ps, const char *p, | |
649 | int len, int parsed_float, YYSTYPE *putithere) | |
650 | { | |
651 | ULONGEST n = 0; | |
652 | ULONGEST prevn = 0; | |
653 | ULONGEST un; | |
654 | ||
655 | int i = 0; | |
656 | int c; | |
657 | int base = input_radix; | |
658 | int unsigned_p = 0; | |
659 | int long_p = 0; | |
660 | ||
661 | /* We have found a "L" or "U" suffix. */ | |
662 | int found_suffix = 0; | |
663 | ||
664 | ULONGEST high_bit; | |
665 | struct type *signed_type; | |
666 | struct type *unsigned_type; | |
667 | ||
668 | if (parsed_float) | |
669 | { | |
3ed9baed IB |
670 | char *s, *sp; |
671 | ||
672 | /* Strip out all embedded '_' before passing to parse_float. */ | |
673 | s = (char *) alloca (len + 1); | |
674 | sp = s; | |
675 | while (len-- > 0) | |
676 | { | |
677 | if (*p != '_') | |
678 | *sp++ = *p; | |
679 | p++; | |
680 | } | |
681 | *sp = '\0'; | |
682 | len = strlen (s); | |
683 | ||
edd079d9 UW |
684 | /* Check suffix for `i' , `fi' or `li' (idouble, ifloat or ireal). */ |
685 | if (len >= 1 && tolower (s[len - 1]) == 'i') | |
3ed9baed | 686 | { |
edd079d9 | 687 | if (len >= 2 && tolower (s[len - 2]) == 'f') |
3ed9baed IB |
688 | { |
689 | putithere->typed_val_float.type | |
edd079d9 UW |
690 | = parse_d_type (ps)->builtin_ifloat; |
691 | len -= 2; | |
3ed9baed | 692 | } |
edd079d9 | 693 | else if (len >= 2 && tolower (s[len - 2]) == 'l') |
3ed9baed IB |
694 | { |
695 | putithere->typed_val_float.type | |
edd079d9 UW |
696 | = parse_d_type (ps)->builtin_ireal; |
697 | len -= 2; | |
3ed9baed | 698 | } |
edd079d9 | 699 | else |
3ed9baed IB |
700 | { |
701 | putithere->typed_val_float.type | |
702 | = parse_d_type (ps)->builtin_idouble; | |
edd079d9 | 703 | len -= 1; |
3ed9baed | 704 | } |
3ed9baed | 705 | } |
edd079d9 UW |
706 | /* Check suffix for `f' or `l'' (float or real). */ |
707 | else if (len >= 1 && tolower (s[len - 1]) == 'f') | |
3ed9baed | 708 | { |
edd079d9 UW |
709 | putithere->typed_val_float.type |
710 | = parse_d_type (ps)->builtin_float; | |
711 | len -= 1; | |
712 | } | |
713 | else if (len >= 1 && tolower (s[len - 1]) == 'l') | |
714 | { | |
715 | putithere->typed_val_float.type | |
716 | = parse_d_type (ps)->builtin_real; | |
717 | len -= 1; | |
3ed9baed | 718 | } |
edd079d9 | 719 | /* Default type if no suffix. */ |
3ed9baed | 720 | else |
edd079d9 UW |
721 | { |
722 | putithere->typed_val_float.type | |
723 | = parse_d_type (ps)->builtin_double; | |
724 | } | |
725 | ||
726 | if (!parse_float (s, len, | |
727 | putithere->typed_val_float.type, | |
728 | putithere->typed_val_float.val)) | |
3ed9baed IB |
729 | return ERROR; |
730 | ||
731 | return FLOAT_LITERAL; | |
732 | } | |
733 | ||
734 | /* Handle base-switching prefixes 0x, 0b, 0 */ | |
735 | if (p[0] == '0') | |
736 | switch (p[1]) | |
737 | { | |
738 | case 'x': | |
739 | case 'X': | |
740 | if (len >= 3) | |
741 | { | |
742 | p += 2; | |
743 | base = 16; | |
744 | len -= 2; | |
745 | } | |
746 | break; | |
747 | ||
748 | case 'b': | |
749 | case 'B': | |
750 | if (len >= 3) | |
751 | { | |
752 | p += 2; | |
753 | base = 2; | |
754 | len -= 2; | |
755 | } | |
756 | break; | |
757 | ||
758 | default: | |
759 | base = 8; | |
760 | break; | |
761 | } | |
762 | ||
763 | while (len-- > 0) | |
764 | { | |
765 | c = *p++; | |
766 | if (c == '_') | |
767 | continue; /* Ignore embedded '_'. */ | |
768 | if (c >= 'A' && c <= 'Z') | |
769 | c += 'a' - 'A'; | |
770 | if (c != 'l' && c != 'u') | |
771 | n *= base; | |
772 | if (c >= '0' && c <= '9') | |
773 | { | |
774 | if (found_suffix) | |
775 | return ERROR; | |
776 | n += i = c - '0'; | |
777 | } | |
778 | else | |
779 | { | |
780 | if (base > 10 && c >= 'a' && c <= 'f') | |
781 | { | |
782 | if (found_suffix) | |
dda83cd7 | 783 | return ERROR; |
3ed9baed IB |
784 | n += i = c - 'a' + 10; |
785 | } | |
786 | else if (c == 'l' && long_p == 0) | |
787 | { | |
788 | long_p = 1; | |
789 | found_suffix = 1; | |
790 | } | |
791 | else if (c == 'u' && unsigned_p == 0) | |
792 | { | |
793 | unsigned_p = 1; | |
794 | found_suffix = 1; | |
795 | } | |
796 | else | |
797 | return ERROR; /* Char not a digit */ | |
798 | } | |
799 | if (i >= base) | |
800 | return ERROR; /* Invalid digit in this base. */ | |
801 | /* Portably test for integer overflow. */ | |
802 | if (c != 'l' && c != 'u') | |
803 | { | |
804 | ULONGEST n2 = prevn * base; | |
805 | if ((n2 / base != prevn) || (n2 + i < prevn)) | |
806 | error (_("Numeric constant too large.")); | |
807 | } | |
808 | prevn = n; | |
809 | } | |
810 | ||
811 | /* An integer constant is an int or a long. An L suffix forces it to | |
812 | be long, and a U suffix forces it to be unsigned. To figure out | |
813 | whether it fits, we shift it right and see whether anything remains. | |
814 | Note that we can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or | |
815 | more in one operation, because many compilers will warn about such a | |
816 | shift (which always produces a zero result). To deal with the case | |
817 | where it is we just always shift the value more than once, with fewer | |
818 | bits each time. */ | |
819 | un = (ULONGEST) n >> 2; | |
820 | if (long_p == 0 && (un >> 30) == 0) | |
821 | { | |
822 | high_bit = ((ULONGEST) 1) << 31; | |
823 | signed_type = parse_d_type (ps)->builtin_int; | |
824 | /* For decimal notation, keep the sign of the worked out type. */ | |
825 | if (base == 10 && !unsigned_p) | |
826 | unsigned_type = parse_d_type (ps)->builtin_long; | |
827 | else | |
828 | unsigned_type = parse_d_type (ps)->builtin_uint; | |
829 | } | |
830 | else | |
831 | { | |
832 | int shift; | |
833 | if (sizeof (ULONGEST) * HOST_CHAR_BIT < 64) | |
834 | /* A long long does not fit in a LONGEST. */ | |
835 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); | |
836 | else | |
837 | shift = 63; | |
838 | high_bit = (ULONGEST) 1 << shift; | |
839 | signed_type = parse_d_type (ps)->builtin_long; | |
840 | unsigned_type = parse_d_type (ps)->builtin_ulong; | |
841 | } | |
842 | ||
843 | putithere->typed_val_int.val = n; | |
844 | ||
845 | /* If the high bit of the worked out type is set then this number | |
846 | has to be unsigned_type. */ | |
847 | if (unsigned_p || (n & high_bit)) | |
848 | putithere->typed_val_int.type = unsigned_type; | |
849 | else | |
850 | putithere->typed_val_int.type = signed_type; | |
851 | ||
852 | return INTEGER_LITERAL; | |
853 | } | |
854 | ||
855 | /* Temporary obstack used for holding strings. */ | |
856 | static struct obstack tempbuf; | |
857 | static int tempbuf_init; | |
858 | ||
859 | /* Parse a string or character literal from TOKPTR. The string or | |
860 | character may be wide or unicode. *OUTPTR is set to just after the | |
861 | end of the literal in the input string. The resulting token is | |
862 | stored in VALUE. This returns a token value, either STRING or | |
863 | CHAR, depending on what was parsed. *HOST_CHARS is set to the | |
864 | number of host characters in the literal. */ | |
865 | ||
866 | static int | |
867 | parse_string_or_char (const char *tokptr, const char **outptr, | |
868 | struct typed_stoken *value, int *host_chars) | |
869 | { | |
870 | int quote; | |
871 | ||
872 | /* Build the gdb internal form of the input string in tempbuf. Note | |
873 | that the buffer is null byte terminated *only* for the | |
874 | convenience of debugging gdb itself and printing the buffer | |
875 | contents when the buffer contains no embedded nulls. Gdb does | |
876 | not depend upon the buffer being null byte terminated, it uses | |
877 | the length string instead. This allows gdb to handle C strings | |
878 | (as well as strings in other languages) with embedded null | |
879 | bytes */ | |
880 | ||
881 | if (!tempbuf_init) | |
882 | tempbuf_init = 1; | |
883 | else | |
884 | obstack_free (&tempbuf, NULL); | |
885 | obstack_init (&tempbuf); | |
886 | ||
887 | /* Skip the quote. */ | |
888 | quote = *tokptr; | |
889 | ++tokptr; | |
890 | ||
891 | *host_chars = 0; | |
892 | ||
893 | while (*tokptr) | |
894 | { | |
895 | char c = *tokptr; | |
896 | if (c == '\\') | |
897 | { | |
898 | ++tokptr; | |
899 | *host_chars += c_parse_escape (&tokptr, &tempbuf); | |
900 | } | |
901 | else if (c == quote) | |
902 | break; | |
903 | else | |
904 | { | |
905 | obstack_1grow (&tempbuf, c); | |
906 | ++tokptr; | |
907 | /* FIXME: this does the wrong thing with multi-byte host | |
908 | characters. We could use mbrlen here, but that would | |
909 | make "set host-charset" a bit less useful. */ | |
910 | ++*host_chars; | |
911 | } | |
912 | } | |
913 | ||
914 | if (*tokptr != quote) | |
915 | { | |
916 | if (quote == '"' || quote == '`') | |
917 | error (_("Unterminated string in expression.")); | |
918 | else | |
919 | error (_("Unmatched single quote.")); | |
920 | } | |
921 | ++tokptr; | |
922 | ||
923 | /* FIXME: should instead use own language string_type enum | |
924 | and handle D-specific string suffixes here. */ | |
925 | if (quote == '\'') | |
926 | value->type = C_CHAR; | |
927 | else | |
928 | value->type = C_STRING; | |
929 | ||
79f33898 | 930 | value->ptr = (char *) obstack_base (&tempbuf); |
3ed9baed IB |
931 | value->length = obstack_object_size (&tempbuf); |
932 | ||
933 | *outptr = tokptr; | |
934 | ||
935 | return quote == '\'' ? CHARACTER_LITERAL : STRING_LITERAL; | |
936 | } | |
937 | ||
938 | struct token | |
939 | { | |
a121b7c1 | 940 | const char *oper; |
3ed9baed IB |
941 | int token; |
942 | enum exp_opcode opcode; | |
943 | }; | |
944 | ||
945 | static const struct token tokentab3[] = | |
946 | { | |
947 | {"^^=", ASSIGN_MODIFY, BINOP_EXP}, | |
948 | {"<<=", ASSIGN_MODIFY, BINOP_LSH}, | |
949 | {">>=", ASSIGN_MODIFY, BINOP_RSH}, | |
950 | }; | |
951 | ||
952 | static const struct token tokentab2[] = | |
953 | { | |
954 | {"+=", ASSIGN_MODIFY, BINOP_ADD}, | |
955 | {"-=", ASSIGN_MODIFY, BINOP_SUB}, | |
956 | {"*=", ASSIGN_MODIFY, BINOP_MUL}, | |
957 | {"/=", ASSIGN_MODIFY, BINOP_DIV}, | |
958 | {"%=", ASSIGN_MODIFY, BINOP_REM}, | |
959 | {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR}, | |
960 | {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND}, | |
961 | {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR}, | |
962 | {"++", INCREMENT, BINOP_END}, | |
963 | {"--", DECREMENT, BINOP_END}, | |
964 | {"&&", ANDAND, BINOP_END}, | |
965 | {"||", OROR, BINOP_END}, | |
966 | {"^^", HATHAT, BINOP_END}, | |
967 | {"<<", LSH, BINOP_END}, | |
968 | {">>", RSH, BINOP_END}, | |
969 | {"==", EQUAL, BINOP_END}, | |
970 | {"!=", NOTEQUAL, BINOP_END}, | |
971 | {"<=", LEQ, BINOP_END}, | |
972 | {">=", GEQ, BINOP_END}, | |
973 | {"..", DOTDOT, BINOP_END}, | |
974 | }; | |
975 | ||
976 | /* Identifier-like tokens. */ | |
977 | static const struct token ident_tokens[] = | |
978 | { | |
979 | {"is", IDENTITY, BINOP_END}, | |
980 | {"!is", NOTIDENTITY, BINOP_END}, | |
981 | ||
982 | {"cast", CAST_KEYWORD, OP_NULL}, | |
983 | {"const", CONST_KEYWORD, OP_NULL}, | |
984 | {"immutable", IMMUTABLE_KEYWORD, OP_NULL}, | |
985 | {"shared", SHARED_KEYWORD, OP_NULL}, | |
986 | {"super", SUPER_KEYWORD, OP_NULL}, | |
987 | ||
988 | {"null", NULL_KEYWORD, OP_NULL}, | |
989 | {"true", TRUE_KEYWORD, OP_NULL}, | |
990 | {"false", FALSE_KEYWORD, OP_NULL}, | |
991 | ||
992 | {"init", INIT_KEYWORD, OP_NULL}, | |
993 | {"sizeof", SIZEOF_KEYWORD, OP_NULL}, | |
994 | {"typeof", TYPEOF_KEYWORD, OP_NULL}, | |
995 | {"typeid", TYPEID_KEYWORD, OP_NULL}, | |
996 | ||
997 | {"delegate", DELEGATE_KEYWORD, OP_NULL}, | |
998 | {"function", FUNCTION_KEYWORD, OP_NULL}, | |
999 | {"struct", STRUCT_KEYWORD, OP_NULL}, | |
1000 | {"union", UNION_KEYWORD, OP_NULL}, | |
1001 | {"class", CLASS_KEYWORD, OP_NULL}, | |
1002 | {"interface", INTERFACE_KEYWORD, OP_NULL}, | |
1003 | {"enum", ENUM_KEYWORD, OP_NULL}, | |
1004 | {"template", TEMPLATE_KEYWORD, OP_NULL}, | |
1005 | }; | |
1006 | ||
3ed9baed IB |
1007 | /* This is set if a NAME token appeared at the very end of the input |
1008 | string, with no whitespace separating the name from the EOF. This | |
1009 | is used only when parsing to do field name completion. */ | |
1010 | static int saw_name_at_eof; | |
1011 | ||
1012 | /* This is set if the previously-returned token was a structure operator. | |
1013 | This is used only when parsing to do field name completion. */ | |
1014 | static int last_was_structop; | |
1015 | ||
28aaf3fd TT |
1016 | /* Depth of parentheses. */ |
1017 | static int paren_depth; | |
1018 | ||
3ed9baed IB |
1019 | /* Read one token, getting characters through lexptr. */ |
1020 | ||
1021 | static int | |
444c1ed8 | 1022 | lex_one_token (struct parser_state *par_state) |
3ed9baed IB |
1023 | { |
1024 | int c; | |
1025 | int namelen; | |
1026 | unsigned int i; | |
1027 | const char *tokstart; | |
1028 | int saw_structop = last_was_structop; | |
3ed9baed IB |
1029 | |
1030 | last_was_structop = 0; | |
1031 | ||
1032 | retry: | |
1033 | ||
5776fca3 | 1034 | pstate->prev_lexptr = pstate->lexptr; |
3ed9baed | 1035 | |
5776fca3 | 1036 | tokstart = pstate->lexptr; |
3ed9baed IB |
1037 | /* See if it is a special token of length 3. */ |
1038 | for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++) | |
fe978cb0 | 1039 | if (strncmp (tokstart, tokentab3[i].oper, 3) == 0) |
3ed9baed | 1040 | { |
5776fca3 | 1041 | pstate->lexptr += 3; |
3ed9baed IB |
1042 | yylval.opcode = tokentab3[i].opcode; |
1043 | return tokentab3[i].token; | |
1044 | } | |
1045 | ||
1046 | /* See if it is a special token of length 2. */ | |
1047 | for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++) | |
fe978cb0 | 1048 | if (strncmp (tokstart, tokentab2[i].oper, 2) == 0) |
3ed9baed | 1049 | { |
5776fca3 | 1050 | pstate->lexptr += 2; |
3ed9baed IB |
1051 | yylval.opcode = tokentab2[i].opcode; |
1052 | return tokentab2[i].token; | |
1053 | } | |
1054 | ||
1055 | switch (c = *tokstart) | |
1056 | { | |
1057 | case 0: | |
1058 | /* If we're parsing for field name completion, and the previous | |
1059 | token allows such completion, return a COMPLETE token. | |
1060 | Otherwise, we were already scanning the original text, and | |
1061 | we're really done. */ | |
1062 | if (saw_name_at_eof) | |
1063 | { | |
1064 | saw_name_at_eof = 0; | |
1065 | return COMPLETE; | |
1066 | } | |
1067 | else if (saw_structop) | |
1068 | return COMPLETE; | |
1069 | else | |
dda83cd7 | 1070 | return 0; |
3ed9baed IB |
1071 | |
1072 | case ' ': | |
1073 | case '\t': | |
1074 | case '\n': | |
5776fca3 | 1075 | pstate->lexptr++; |
3ed9baed IB |
1076 | goto retry; |
1077 | ||
1078 | case '[': | |
1079 | case '(': | |
1080 | paren_depth++; | |
5776fca3 | 1081 | pstate->lexptr++; |
3ed9baed IB |
1082 | return c; |
1083 | ||
1084 | case ']': | |
1085 | case ')': | |
1086 | if (paren_depth == 0) | |
1087 | return 0; | |
1088 | paren_depth--; | |
5776fca3 | 1089 | pstate->lexptr++; |
3ed9baed IB |
1090 | return c; |
1091 | ||
1092 | case ',': | |
8621b685 | 1093 | if (pstate->comma_terminates && paren_depth == 0) |
3ed9baed | 1094 | return 0; |
5776fca3 | 1095 | pstate->lexptr++; |
3ed9baed IB |
1096 | return c; |
1097 | ||
1098 | case '.': | |
1099 | /* Might be a floating point number. */ | |
5776fca3 | 1100 | if (pstate->lexptr[1] < '0' || pstate->lexptr[1] > '9') |
3ed9baed | 1101 | { |
2a612529 | 1102 | if (pstate->parse_completion) |
3ed9baed IB |
1103 | last_was_structop = 1; |
1104 | goto symbol; /* Nope, must be a symbol. */ | |
1105 | } | |
86a73007 | 1106 | /* FALL THRU. */ |
3ed9baed IB |
1107 | |
1108 | case '0': | |
1109 | case '1': | |
1110 | case '2': | |
1111 | case '3': | |
1112 | case '4': | |
1113 | case '5': | |
1114 | case '6': | |
1115 | case '7': | |
1116 | case '8': | |
1117 | case '9': | |
1118 | { | |
1119 | /* It's a number. */ | |
1120 | int got_dot = 0, got_e = 0, toktype; | |
1121 | const char *p = tokstart; | |
1122 | int hex = input_radix > 10; | |
1123 | ||
1124 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
1125 | { | |
1126 | p += 2; | |
1127 | hex = 1; | |
1128 | } | |
1129 | ||
1130 | for (;; ++p) | |
1131 | { | |
1132 | /* Hex exponents start with 'p', because 'e' is a valid hex | |
1133 | digit and thus does not indicate a floating point number | |
1134 | when the radix is hex. */ | |
1135 | if ((!hex && !got_e && tolower (p[0]) == 'e') | |
1136 | || (hex && !got_e && tolower (p[0] == 'p'))) | |
1137 | got_dot = got_e = 1; | |
1138 | /* A '.' always indicates a decimal floating point number | |
1139 | regardless of the radix. If we have a '..' then its the | |
1140 | end of the number and the beginning of a slice. */ | |
1141 | else if (!got_dot && (p[0] == '.' && p[1] != '.')) | |
1142 | got_dot = 1; | |
1143 | /* This is the sign of the exponent, not the end of the number. */ | |
1144 | else if (got_e && (tolower (p[-1]) == 'e' || tolower (p[-1]) == 'p') | |
1145 | && (*p == '-' || *p == '+')) | |
1146 | continue; | |
1147 | /* We will take any letters or digits, ignoring any embedded '_'. | |
1148 | parse_number will complain if past the radix, or if L or U are | |
1149 | not final. */ | |
c0fe2ae7 IB |
1150 | else if ((*p < '0' || *p > '9') && (*p != '_') |
1151 | && ((*p < 'a' || *p > 'z') && (*p < 'A' || *p > 'Z'))) | |
3ed9baed IB |
1152 | break; |
1153 | } | |
1154 | ||
444c1ed8 | 1155 | toktype = parse_number (par_state, tokstart, p - tokstart, |
3ed9baed IB |
1156 | got_dot|got_e, &yylval); |
1157 | if (toktype == ERROR) | |
1158 | { | |
1159 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
1160 | ||
1161 | memcpy (err_copy, tokstart, p - tokstart); | |
1162 | err_copy[p - tokstart] = 0; | |
1163 | error (_("Invalid number \"%s\"."), err_copy); | |
1164 | } | |
5776fca3 | 1165 | pstate->lexptr = p; |
3ed9baed IB |
1166 | return toktype; |
1167 | } | |
1168 | ||
1169 | case '@': | |
1170 | { | |
1171 | const char *p = &tokstart[1]; | |
1172 | size_t len = strlen ("entry"); | |
1173 | ||
1174 | while (isspace (*p)) | |
1175 | p++; | |
1176 | if (strncmp (p, "entry", len) == 0 && !isalnum (p[len]) | |
1177 | && p[len] != '_') | |
1178 | { | |
5776fca3 | 1179 | pstate->lexptr = &p[len]; |
3ed9baed IB |
1180 | return ENTRY; |
1181 | } | |
1182 | } | |
1183 | /* FALLTHRU */ | |
1184 | case '+': | |
1185 | case '-': | |
1186 | case '*': | |
1187 | case '/': | |
1188 | case '%': | |
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 | symbol: | |
5776fca3 | 1202 | pstate->lexptr++; |
3ed9baed IB |
1203 | return c; |
1204 | ||
1205 | case '\'': | |
1206 | case '"': | |
1207 | case '`': | |
1208 | { | |
1209 | int host_len; | |
5776fca3 TT |
1210 | int result = parse_string_or_char (tokstart, &pstate->lexptr, |
1211 | &yylval.tsval, &host_len); | |
3ed9baed IB |
1212 | if (result == CHARACTER_LITERAL) |
1213 | { | |
1214 | if (host_len == 0) | |
1215 | error (_("Empty character constant.")); | |
1216 | else if (host_len > 2 && c == '\'') | |
1217 | { | |
1218 | ++tokstart; | |
5776fca3 | 1219 | namelen = pstate->lexptr - tokstart - 1; |
3ed9baed IB |
1220 | goto tryname; |
1221 | } | |
1222 | else if (host_len > 1) | |
1223 | error (_("Invalid character constant.")); | |
1224 | } | |
1225 | return result; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | if (!(c == '_' || c == '$' | |
1230 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
1231 | /* We must have come across a bad character (e.g. ';'). */ | |
1232 | error (_("Invalid character '%c' in expression"), c); | |
1233 | ||
1234 | /* It's a name. See how long it is. */ | |
1235 | namelen = 0; | |
1236 | for (c = tokstart[namelen]; | |
1237 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
1238 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));) | |
1239 | c = tokstart[++namelen]; | |
1240 | ||
1241 | /* The token "if" terminates the expression and is NOT | |
1242 | removed from the input stream. */ | |
1243 | if (namelen == 2 && tokstart[0] == 'i' && tokstart[1] == 'f') | |
1244 | return 0; | |
1245 | ||
1246 | /* For the same reason (breakpoint conditions), "thread N" | |
1247 | terminates the expression. "thread" could be an identifier, but | |
1248 | an identifier is never followed by a number without intervening | |
1249 | punctuation. "task" is similar. Handle abbreviations of these, | |
1250 | similarly to breakpoint.c:find_condition_and_thread. */ | |
1251 | if (namelen >= 1 | |
1252 | && (strncmp (tokstart, "thread", namelen) == 0 | |
1253 | || strncmp (tokstart, "task", namelen) == 0) | |
1254 | && (tokstart[namelen] == ' ' || tokstart[namelen] == '\t')) | |
1255 | { | |
1256 | const char *p = tokstart + namelen + 1; | |
1257 | ||
1258 | while (*p == ' ' || *p == '\t') | |
dda83cd7 | 1259 | p++; |
3ed9baed | 1260 | if (*p >= '0' && *p <= '9') |
dda83cd7 | 1261 | return 0; |
3ed9baed IB |
1262 | } |
1263 | ||
5776fca3 | 1264 | pstate->lexptr += namelen; |
3ed9baed IB |
1265 | |
1266 | tryname: | |
1267 | ||
1268 | yylval.sval.ptr = tokstart; | |
1269 | yylval.sval.length = namelen; | |
1270 | ||
1271 | /* Catch specific keywords. */ | |
61f4b350 | 1272 | std::string copy = copy_name (yylval.sval); |
3ed9baed | 1273 | for (i = 0; i < sizeof ident_tokens / sizeof ident_tokens[0]; i++) |
61f4b350 | 1274 | if (copy == ident_tokens[i].oper) |
3ed9baed IB |
1275 | { |
1276 | /* It is ok to always set this, even though we don't always | |
1277 | strictly need to. */ | |
1278 | yylval.opcode = ident_tokens[i].opcode; | |
1279 | return ident_tokens[i].token; | |
1280 | } | |
1281 | ||
1282 | if (*tokstart == '$') | |
1283 | return DOLLAR_VARIABLE; | |
1284 | ||
1285 | yylval.tsym.type | |
73923d7e | 1286 | = language_lookup_primitive_type (par_state->language (), |
61f4b350 | 1287 | par_state->gdbarch (), copy.c_str ()); |
3ed9baed IB |
1288 | if (yylval.tsym.type != NULL) |
1289 | return TYPENAME; | |
1290 | ||
1291 | /* Input names that aren't symbols but ARE valid hex numbers, | |
1292 | when the input radix permits them, can be names or numbers | |
1293 | depending on the parse. Note we support radixes > 16 here. */ | |
1294 | if ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) | |
1295 | || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10)) | |
1296 | { | |
1297 | YYSTYPE newlval; /* Its value is ignored. */ | |
444c1ed8 | 1298 | int hextype = parse_number (par_state, tokstart, namelen, 0, &newlval); |
3ed9baed IB |
1299 | if (hextype == INTEGER_LITERAL) |
1300 | return NAME_OR_INT; | |
1301 | } | |
1302 | ||
2a612529 | 1303 | if (pstate->parse_completion && *pstate->lexptr == '\0') |
3ed9baed IB |
1304 | saw_name_at_eof = 1; |
1305 | ||
1306 | return IDENTIFIER; | |
1307 | } | |
1308 | ||
444c1ed8 | 1309 | /* An object of this type is pushed on a FIFO by the "outer" lexer. */ |
5fe3f3e4 | 1310 | struct token_and_value |
444c1ed8 IB |
1311 | { |
1312 | int token; | |
1313 | YYSTYPE value; | |
5fe3f3e4 | 1314 | }; |
444c1ed8 | 1315 | |
444c1ed8 IB |
1316 | |
1317 | /* A FIFO of tokens that have been read but not yet returned to the | |
1318 | parser. */ | |
5fe3f3e4 | 1319 | static std::vector<token_and_value> token_fifo; |
444c1ed8 IB |
1320 | |
1321 | /* Non-zero if the lexer should return tokens from the FIFO. */ | |
1322 | static int popping; | |
1323 | ||
1324 | /* Temporary storage for yylex; this holds symbol names as they are | |
1325 | built up. */ | |
8268c778 | 1326 | static auto_obstack name_obstack; |
444c1ed8 IB |
1327 | |
1328 | /* Classify an IDENTIFIER token. The contents of the token are in `yylval'. | |
1329 | Updates yylval and returns the new token type. BLOCK is the block | |
1330 | in which lookups start; this can be NULL to mean the global scope. */ | |
1331 | ||
1332 | static int | |
1333 | classify_name (struct parser_state *par_state, const struct block *block) | |
1334 | { | |
1335 | struct block_symbol sym; | |
444c1ed8 IB |
1336 | struct field_of_this_result is_a_field_of_this; |
1337 | ||
61f4b350 | 1338 | std::string copy = copy_name (yylval.sval); |
444c1ed8 | 1339 | |
61f4b350 | 1340 | sym = lookup_symbol (copy.c_str (), block, VAR_DOMAIN, &is_a_field_of_this); |
444c1ed8 IB |
1341 | if (sym.symbol && SYMBOL_CLASS (sym.symbol) == LOC_TYPEDEF) |
1342 | { | |
1343 | yylval.tsym.type = SYMBOL_TYPE (sym.symbol); | |
1344 | return TYPENAME; | |
1345 | } | |
1346 | else if (sym.symbol == NULL) | |
1347 | { | |
1348 | /* Look-up first for a module name, then a type. */ | |
61f4b350 | 1349 | sym = lookup_symbol (copy.c_str (), block, MODULE_DOMAIN, NULL); |
444c1ed8 | 1350 | if (sym.symbol == NULL) |
61f4b350 | 1351 | sym = lookup_symbol (copy.c_str (), block, STRUCT_DOMAIN, NULL); |
444c1ed8 IB |
1352 | |
1353 | if (sym.symbol != NULL) | |
1354 | { | |
1355 | yylval.tsym.type = SYMBOL_TYPE (sym.symbol); | |
1356 | return TYPENAME; | |
1357 | } | |
1358 | ||
1359 | return UNKNOWN_NAME; | |
1360 | } | |
1361 | ||
1362 | return IDENTIFIER; | |
1363 | } | |
1364 | ||
1365 | /* Like classify_name, but used by the inner loop of the lexer, when a | |
1366 | name might have already been seen. CONTEXT is the context type, or | |
1367 | NULL if this is the first component of a name. */ | |
1368 | ||
1369 | static int | |
1370 | classify_inner_name (struct parser_state *par_state, | |
1371 | const struct block *block, struct type *context) | |
1372 | { | |
1373 | struct type *type; | |
444c1ed8 IB |
1374 | |
1375 | if (context == NULL) | |
1376 | return classify_name (par_state, block); | |
1377 | ||
1378 | type = check_typedef (context); | |
7f3706eb IB |
1379 | if (!type_aggregate_p (type)) |
1380 | return ERROR; | |
444c1ed8 | 1381 | |
61f4b350 TT |
1382 | std::string copy = copy_name (yylval.ssym.stoken); |
1383 | yylval.ssym.sym = d_lookup_nested_symbol (type, copy.c_str (), block); | |
444c1ed8 IB |
1384 | |
1385 | if (yylval.ssym.sym.symbol == NULL) | |
1386 | return ERROR; | |
1387 | ||
1388 | if (SYMBOL_CLASS (yylval.ssym.sym.symbol) == LOC_TYPEDEF) | |
1389 | { | |
1390 | yylval.tsym.type = SYMBOL_TYPE (yylval.ssym.sym.symbol); | |
1391 | return TYPENAME; | |
1392 | } | |
1393 | ||
1394 | return IDENTIFIER; | |
1395 | } | |
1396 | ||
1397 | /* The outer level of a two-level lexer. This calls the inner lexer | |
1398 | to return tokens. It then either returns these tokens, or | |
1399 | aggregates them into a larger token. This lets us work around a | |
1400 | problem in our parsing approach, where the parser could not | |
1401 | distinguish between qualified names and qualified types at the | |
1402 | right point. */ | |
1403 | ||
1404 | static int | |
1405 | yylex (void) | |
1406 | { | |
1407 | token_and_value current; | |
1408 | int last_was_dot; | |
1409 | struct type *context_type = NULL; | |
1410 | int last_to_examine, next_to_examine, checkpoint; | |
1411 | const struct block *search_block; | |
1412 | ||
5fe3f3e4 | 1413 | if (popping && !token_fifo.empty ()) |
444c1ed8 IB |
1414 | goto do_pop; |
1415 | popping = 0; | |
1416 | ||
1417 | /* Read the first token and decide what to do. */ | |
1418 | current.token = lex_one_token (pstate); | |
1419 | if (current.token != IDENTIFIER && current.token != '.') | |
1420 | return current.token; | |
1421 | ||
1422 | /* Read any sequence of alternating "." and identifier tokens into | |
1423 | the token FIFO. */ | |
1424 | current.value = yylval; | |
5fe3f3e4 | 1425 | token_fifo.push_back (current); |
444c1ed8 IB |
1426 | last_was_dot = current.token == '.'; |
1427 | ||
1428 | while (1) | |
1429 | { | |
1430 | current.token = lex_one_token (pstate); | |
1431 | current.value = yylval; | |
5fe3f3e4 | 1432 | token_fifo.push_back (current); |
444c1ed8 IB |
1433 | |
1434 | if ((last_was_dot && current.token != IDENTIFIER) | |
1435 | || (!last_was_dot && current.token != '.')) | |
1436 | break; | |
1437 | ||
1438 | last_was_dot = !last_was_dot; | |
1439 | } | |
1440 | popping = 1; | |
1441 | ||
1442 | /* We always read one extra token, so compute the number of tokens | |
1443 | to examine accordingly. */ | |
5fe3f3e4 | 1444 | last_to_examine = token_fifo.size () - 2; |
444c1ed8 IB |
1445 | next_to_examine = 0; |
1446 | ||
5fe3f3e4 | 1447 | current = token_fifo[next_to_examine]; |
444c1ed8 IB |
1448 | ++next_to_examine; |
1449 | ||
1450 | /* If we are not dealing with a typename, now is the time to find out. */ | |
1451 | if (current.token == IDENTIFIER) | |
1452 | { | |
1453 | yylval = current.value; | |
1e58a4a4 | 1454 | current.token = classify_name (pstate, pstate->expression_context_block); |
444c1ed8 IB |
1455 | current.value = yylval; |
1456 | } | |
1457 | ||
1458 | /* If the IDENTIFIER is not known, it could be a package symbol, | |
1459 | first try building up a name until we find the qualified module. */ | |
1460 | if (current.token == UNKNOWN_NAME) | |
1461 | { | |
8268c778 | 1462 | name_obstack.clear (); |
444c1ed8 IB |
1463 | obstack_grow (&name_obstack, current.value.sval.ptr, |
1464 | current.value.sval.length); | |
1465 | ||
1466 | last_was_dot = 0; | |
1467 | ||
1468 | while (next_to_examine <= last_to_examine) | |
1469 | { | |
5fe3f3e4 | 1470 | token_and_value next; |
444c1ed8 | 1471 | |
5fe3f3e4 | 1472 | next = token_fifo[next_to_examine]; |
444c1ed8 IB |
1473 | ++next_to_examine; |
1474 | ||
5fe3f3e4 | 1475 | if (next.token == IDENTIFIER && last_was_dot) |
444c1ed8 IB |
1476 | { |
1477 | /* Update the partial name we are constructing. */ | |
dda83cd7 | 1478 | obstack_grow_str (&name_obstack, "."); |
5fe3f3e4 TT |
1479 | obstack_grow (&name_obstack, next.value.sval.ptr, |
1480 | next.value.sval.length); | |
444c1ed8 | 1481 | |
79f33898 | 1482 | yylval.sval.ptr = (char *) obstack_base (&name_obstack); |
444c1ed8 IB |
1483 | yylval.sval.length = obstack_object_size (&name_obstack); |
1484 | ||
1e58a4a4 TT |
1485 | current.token = classify_name (pstate, |
1486 | pstate->expression_context_block); | |
444c1ed8 IB |
1487 | current.value = yylval; |
1488 | ||
1489 | /* We keep going until we find a TYPENAME. */ | |
1490 | if (current.token == TYPENAME) | |
1491 | { | |
1492 | /* Install it as the first token in the FIFO. */ | |
5fe3f3e4 TT |
1493 | token_fifo[0] = current; |
1494 | token_fifo.erase (token_fifo.begin () + 1, | |
1495 | token_fifo.begin () + next_to_examine); | |
444c1ed8 IB |
1496 | break; |
1497 | } | |
1498 | } | |
5fe3f3e4 | 1499 | else if (next.token == '.' && !last_was_dot) |
444c1ed8 IB |
1500 | last_was_dot = 1; |
1501 | else | |
1502 | { | |
1503 | /* We've reached the end of the name. */ | |
1504 | break; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | /* Reset our current token back to the start, if we found nothing | |
1509 | this means that we will just jump to do pop. */ | |
5fe3f3e4 | 1510 | current = token_fifo[0]; |
444c1ed8 IB |
1511 | next_to_examine = 1; |
1512 | } | |
1513 | if (current.token != TYPENAME && current.token != '.') | |
1514 | goto do_pop; | |
1515 | ||
8268c778 | 1516 | name_obstack.clear (); |
444c1ed8 IB |
1517 | checkpoint = 0; |
1518 | if (current.token == '.') | |
1519 | search_block = NULL; | |
1520 | else | |
1521 | { | |
1522 | gdb_assert (current.token == TYPENAME); | |
1e58a4a4 | 1523 | search_block = pstate->expression_context_block; |
444c1ed8 IB |
1524 | obstack_grow (&name_obstack, current.value.sval.ptr, |
1525 | current.value.sval.length); | |
1526 | context_type = current.value.tsym.type; | |
1527 | checkpoint = 1; | |
1528 | } | |
1529 | ||
1530 | last_was_dot = current.token == '.'; | |
1531 | ||
1532 | while (next_to_examine <= last_to_examine) | |
1533 | { | |
5fe3f3e4 | 1534 | token_and_value next; |
444c1ed8 | 1535 | |
5fe3f3e4 | 1536 | next = token_fifo[next_to_examine]; |
444c1ed8 IB |
1537 | ++next_to_examine; |
1538 | ||
5fe3f3e4 | 1539 | if (next.token == IDENTIFIER && last_was_dot) |
444c1ed8 IB |
1540 | { |
1541 | int classification; | |
1542 | ||
5fe3f3e4 | 1543 | yylval = next.value; |
444c1ed8 IB |
1544 | classification = classify_inner_name (pstate, search_block, |
1545 | context_type); | |
1546 | /* We keep going until we either run out of names, or until | |
1547 | we have a qualified name which is not a type. */ | |
1548 | if (classification != TYPENAME && classification != IDENTIFIER) | |
1549 | break; | |
1550 | ||
1551 | /* Accept up to this token. */ | |
1552 | checkpoint = next_to_examine; | |
1553 | ||
1554 | /* Update the partial name we are constructing. */ | |
1555 | if (context_type != NULL) | |
1556 | { | |
1557 | /* We don't want to put a leading "." into the name. */ | |
dda83cd7 | 1558 | obstack_grow_str (&name_obstack, "."); |
444c1ed8 | 1559 | } |
5fe3f3e4 TT |
1560 | obstack_grow (&name_obstack, next.value.sval.ptr, |
1561 | next.value.sval.length); | |
444c1ed8 | 1562 | |
79f33898 | 1563 | yylval.sval.ptr = (char *) obstack_base (&name_obstack); |
444c1ed8 IB |
1564 | yylval.sval.length = obstack_object_size (&name_obstack); |
1565 | current.value = yylval; | |
1566 | current.token = classification; | |
1567 | ||
1568 | last_was_dot = 0; | |
1569 | ||
1570 | if (classification == IDENTIFIER) | |
1571 | break; | |
1572 | ||
1573 | context_type = yylval.tsym.type; | |
1574 | } | |
5fe3f3e4 | 1575 | else if (next.token == '.' && !last_was_dot) |
444c1ed8 IB |
1576 | last_was_dot = 1; |
1577 | else | |
1578 | { | |
1579 | /* We've reached the end of the name. */ | |
1580 | break; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | /* If we have a replacement token, install it as the first token in | |
1585 | the FIFO, and delete the other constituent tokens. */ | |
1586 | if (checkpoint > 0) | |
1587 | { | |
5fe3f3e4 | 1588 | token_fifo[0] = current; |
444c1ed8 | 1589 | if (checkpoint > 1) |
5fe3f3e4 TT |
1590 | token_fifo.erase (token_fifo.begin () + 1, |
1591 | token_fifo.begin () + checkpoint); | |
444c1ed8 IB |
1592 | } |
1593 | ||
1594 | do_pop: | |
5fe3f3e4 TT |
1595 | current = token_fifo[0]; |
1596 | token_fifo.erase (token_fifo.begin ()); | |
444c1ed8 IB |
1597 | yylval = current.value; |
1598 | return current.token; | |
1599 | } | |
1600 | ||
3ed9baed IB |
1601 | int |
1602 | d_parse (struct parser_state *par_state) | |
1603 | { | |
3ed9baed | 1604 | /* Setting up the parser state. */ |
eae49211 | 1605 | scoped_restore pstate_restore = make_scoped_restore (&pstate); |
3ed9baed IB |
1606 | gdb_assert (par_state != NULL); |
1607 | pstate = par_state; | |
1608 | ||
156d9eab TT |
1609 | scoped_restore restore_yydebug = make_scoped_restore (&yydebug, |
1610 | parser_debug); | |
3ed9baed | 1611 | |
dac43e32 TT |
1612 | struct type_stack stack; |
1613 | scoped_restore restore_type_stack = make_scoped_restore (&type_stack, | |
1614 | &stack); | |
1615 | ||
3ed9baed IB |
1616 | /* Initialize some state used by the lexer. */ |
1617 | last_was_structop = 0; | |
1618 | saw_name_at_eof = 0; | |
28aaf3fd | 1619 | paren_depth = 0; |
3ed9baed | 1620 | |
5fe3f3e4 | 1621 | token_fifo.clear (); |
444c1ed8 | 1622 | popping = 0; |
8268c778 | 1623 | name_obstack.clear (); |
444c1ed8 | 1624 | |
5613c585 | 1625 | return yyparse (); |
3ed9baed IB |
1626 | } |
1627 | ||
69d340c6 | 1628 | static void |
a121b7c1 | 1629 | yyerror (const char *msg) |
3ed9baed | 1630 | { |
5776fca3 TT |
1631 | if (pstate->prev_lexptr) |
1632 | pstate->lexptr = pstate->prev_lexptr; | |
3ed9baed | 1633 | |
5776fca3 | 1634 | error (_("A %s in expression, near `%s'."), msg, pstate->lexptr); |
3ed9baed IB |
1635 | } |
1636 |