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c44af4eb | 1 | /* Bison parser for Rust expressions, for GDB. |
e2882c85 | 2 | Copyright (C) 2016-2018 Free Software Foundation, Inc. |
c44af4eb TT |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
18 | ||
56ba65a0 TT |
19 | /* The Bison manual says that %pure-parser is deprecated, but we use |
20 | it anyway because it also works with Byacc. That is also why | |
21 | this uses %lex-param and %parse-param rather than the simpler | |
22 | %param -- Byacc does not support the latter. */ | |
23 | %pure-parser | |
24 | %lex-param {struct rust_parser *parser} | |
25 | %parse-param {struct rust_parser *parser} | |
26 | ||
c44af4eb TT |
27 | /* Removing the last conflict seems difficult. */ |
28 | %expect 1 | |
29 | ||
30 | %{ | |
31 | ||
32 | #include "defs.h" | |
33 | ||
34 | #include "block.h" | |
35 | #include "charset.h" | |
36 | #include "cp-support.h" | |
c44af4eb TT |
37 | #include "gdb_obstack.h" |
38 | #include "gdb_regex.h" | |
39 | #include "rust-lang.h" | |
40 | #include "parser-defs.h" | |
41 | #include "selftest.h" | |
42 | #include "value.h" | |
43 | #include "vec.h" | |
44 | ||
45 | #define GDB_YY_REMAP_PREFIX rust | |
46 | #include "yy-remap.h" | |
47 | ||
48 | #define RUSTSTYPE YYSTYPE | |
49 | ||
c44af4eb | 50 | struct rust_op; |
3232fabd | 51 | typedef std::vector<const struct rust_op *> rust_op_vector; |
c44af4eb TT |
52 | |
53 | /* A typed integer constant. */ | |
54 | ||
55 | struct typed_val_int | |
56 | { | |
57 | LONGEST val; | |
58 | struct type *type; | |
59 | }; | |
60 | ||
61 | /* A typed floating point constant. */ | |
62 | ||
63 | struct typed_val_float | |
64 | { | |
edd079d9 | 65 | gdb_byte val[16]; |
c44af4eb TT |
66 | struct type *type; |
67 | }; | |
68 | ||
69 | /* An identifier and an expression. This is used to represent one | |
70 | element of a struct initializer. */ | |
71 | ||
72 | struct set_field | |
73 | { | |
74 | struct stoken name; | |
75 | const struct rust_op *init; | |
76 | }; | |
77 | ||
3232fabd | 78 | typedef std::vector<set_field> rust_set_vector; |
c44af4eb | 79 | |
56ba65a0 TT |
80 | %} |
81 | ||
82 | %union | |
83 | { | |
84 | /* A typed integer constant. */ | |
85 | struct typed_val_int typed_val_int; | |
86 | ||
87 | /* A typed floating point constant. */ | |
88 | struct typed_val_float typed_val_float; | |
89 | ||
90 | /* An identifier or string. */ | |
91 | struct stoken sval; | |
92 | ||
93 | /* A token representing an opcode, like "==". */ | |
94 | enum exp_opcode opcode; | |
95 | ||
96 | /* A list of expressions; for example, the arguments to a function | |
97 | call. */ | |
98 | rust_op_vector *params; | |
99 | ||
100 | /* A list of field initializers. */ | |
101 | rust_set_vector *field_inits; | |
102 | ||
103 | /* A single field initializer. */ | |
104 | struct set_field one_field_init; | |
105 | ||
106 | /* An expression. */ | |
107 | const struct rust_op *op; | |
108 | ||
109 | /* A plain integer, for example used to count the number of | |
110 | "super::" prefixes on a path. */ | |
111 | unsigned int depth; | |
112 | } | |
113 | ||
114 | %{ | |
115 | ||
116 | struct rust_parser; | |
117 | static int rustyylex (YYSTYPE *, rust_parser *); | |
118 | static void rustyyerror (rust_parser *parser, const char *msg); | |
119 | ||
c44af4eb | 120 | static void rust_push_back (char c); |
c44af4eb TT |
121 | static struct stoken make_stoken (const char *); |
122 | static struct block_symbol rust_lookup_symbol (const char *name, | |
123 | const struct block *block, | |
124 | const domain_enum domain); | |
c44af4eb TT |
125 | |
126 | /* A regular expression for matching Rust numbers. This is split up | |
127 | since it is very long and this gives us a way to comment the | |
128 | sections. */ | |
129 | ||
130 | static const char *number_regex_text = | |
131 | /* subexpression 1: allows use of alternation, otherwise uninteresting */ | |
132 | "^(" | |
133 | /* First comes floating point. */ | |
134 | /* Recognize number after the decimal point, with optional | |
135 | exponent and optional type suffix. | |
136 | subexpression 2: allows "?", otherwise uninteresting | |
137 | subexpression 3: if present, type suffix | |
138 | */ | |
139 | "[0-9][0-9_]*\\.[0-9][0-9_]*([eE][-+]?[0-9][0-9_]*)?(f32|f64)?" | |
140 | #define FLOAT_TYPE1 3 | |
141 | "|" | |
142 | /* Recognize exponent without decimal point, with optional type | |
143 | suffix. | |
144 | subexpression 4: if present, type suffix | |
145 | */ | |
146 | #define FLOAT_TYPE2 4 | |
147 | "[0-9][0-9_]*[eE][-+]?[0-9][0-9_]*(f32|f64)?" | |
148 | "|" | |
149 | /* "23." is a valid floating point number, but "23.e5" and | |
150 | "23.f32" are not. So, handle the trailing-. case | |
151 | separately. */ | |
152 | "[0-9][0-9_]*\\." | |
153 | "|" | |
154 | /* Finally come integers. | |
155 | subexpression 5: text of integer | |
156 | subexpression 6: if present, type suffix | |
157 | subexpression 7: allows use of alternation, otherwise uninteresting | |
158 | */ | |
159 | #define INT_TEXT 5 | |
160 | #define INT_TYPE 6 | |
161 | "(0x[a-fA-F0-9_]+|0o[0-7_]+|0b[01_]+|[0-9][0-9_]*)" | |
162 | "([iu](size|8|16|32|64))?" | |
163 | ")"; | |
164 | /* The number of subexpressions to allocate space for, including the | |
165 | "0th" whole match subexpression. */ | |
166 | #define NUM_SUBEXPRESSIONS 8 | |
167 | ||
168 | /* The compiled number-matching regex. */ | |
169 | ||
170 | static regex_t number_regex; | |
171 | ||
3232fabd TT |
172 | /* An instance of this is created before parsing, and destroyed when |
173 | parsing is finished. */ | |
174 | ||
175 | struct rust_parser | |
176 | { | |
177 | rust_parser (struct parser_state *state) | |
178 | : rust_ast (nullptr), | |
179 | pstate (state) | |
180 | { | |
3232fabd TT |
181 | } |
182 | ||
183 | ~rust_parser () | |
184 | { | |
3232fabd TT |
185 | } |
186 | ||
187 | /* Create a new rust_set_vector. The storage for the new vector is | |
188 | managed by this class. */ | |
189 | rust_set_vector *new_set_vector () | |
190 | { | |
191 | rust_set_vector *result = new rust_set_vector; | |
192 | set_vectors.push_back (std::unique_ptr<rust_set_vector> (result)); | |
193 | return result; | |
194 | } | |
195 | ||
196 | /* Create a new rust_ops_vector. The storage for the new vector is | |
197 | managed by this class. */ | |
198 | rust_op_vector *new_op_vector () | |
199 | { | |
200 | rust_op_vector *result = new rust_op_vector; | |
201 | op_vectors.push_back (std::unique_ptr<rust_op_vector> (result)); | |
202 | return result; | |
203 | } | |
204 | ||
205 | /* Return the parser's language. */ | |
206 | const struct language_defn *language () const | |
207 | { | |
208 | return parse_language (pstate); | |
209 | } | |
210 | ||
211 | /* Return the parser's gdbarch. */ | |
212 | struct gdbarch *arch () const | |
213 | { | |
214 | return parse_gdbarch (pstate); | |
215 | } | |
216 | ||
56ba65a0 TT |
217 | /* A helper to look up a Rust type, or fail. This only works for |
218 | types defined by rust_language_arch_info. */ | |
219 | ||
220 | struct type *get_type (const char *name) | |
221 | { | |
222 | struct type *type; | |
223 | ||
224 | type = language_lookup_primitive_type (language (), arch (), name); | |
225 | if (type == NULL) | |
226 | error (_("Could not find Rust type %s"), name); | |
227 | return type; | |
228 | } | |
229 | ||
230 | const char *copy_name (const char *name, int len); | |
231 | struct stoken concat3 (const char *s1, const char *s2, const char *s3); | |
232 | const struct rust_op *crate_name (const struct rust_op *name); | |
233 | const struct rust_op *super_name (const struct rust_op *ident, | |
234 | unsigned int n_supers); | |
235 | ||
236 | int lex_character (YYSTYPE *lvalp); | |
237 | int lex_number (YYSTYPE *lvalp); | |
238 | int lex_string (YYSTYPE *lvalp); | |
239 | int lex_identifier (YYSTYPE *lvalp); | |
240 | ||
241 | struct type *rust_lookup_type (const char *name, const struct block *block); | |
242 | std::vector<struct type *> convert_params_to_types (rust_op_vector *params); | |
243 | struct type *convert_ast_to_type (const struct rust_op *operation); | |
244 | const char *convert_name (const struct rust_op *operation); | |
245 | void convert_params_to_expression (rust_op_vector *params, | |
246 | const struct rust_op *top); | |
247 | void convert_ast_to_expression (const struct rust_op *operation, | |
248 | const struct rust_op *top, | |
249 | bool want_type = false); | |
250 | ||
251 | struct rust_op *ast_basic_type (enum type_code typecode); | |
252 | const struct rust_op *ast_operation (enum exp_opcode opcode, | |
253 | const struct rust_op *left, | |
254 | const struct rust_op *right); | |
255 | const struct rust_op *ast_compound_assignment | |
256 | (enum exp_opcode opcode, const struct rust_op *left, | |
257 | const struct rust_op *rust_op); | |
258 | const struct rust_op *ast_literal (struct typed_val_int val); | |
259 | const struct rust_op *ast_dliteral (struct typed_val_float val); | |
260 | const struct rust_op *ast_structop (const struct rust_op *left, | |
261 | const char *name, | |
262 | int completing); | |
263 | const struct rust_op *ast_structop_anonymous | |
264 | (const struct rust_op *left, struct typed_val_int number); | |
265 | const struct rust_op *ast_unary (enum exp_opcode opcode, | |
266 | const struct rust_op *expr); | |
267 | const struct rust_op *ast_cast (const struct rust_op *expr, | |
268 | const struct rust_op *type); | |
269 | const struct rust_op *ast_call_ish (enum exp_opcode opcode, | |
270 | const struct rust_op *expr, | |
271 | rust_op_vector *params); | |
272 | const struct rust_op *ast_path (struct stoken name, | |
273 | rust_op_vector *params); | |
274 | const struct rust_op *ast_string (struct stoken str); | |
275 | const struct rust_op *ast_struct (const struct rust_op *name, | |
276 | rust_set_vector *fields); | |
277 | const struct rust_op *ast_range (const struct rust_op *lhs, | |
278 | const struct rust_op *rhs, | |
279 | bool inclusive); | |
280 | const struct rust_op *ast_array_type (const struct rust_op *lhs, | |
281 | struct typed_val_int val); | |
282 | const struct rust_op *ast_slice_type (const struct rust_op *type); | |
283 | const struct rust_op *ast_reference_type (const struct rust_op *type); | |
284 | const struct rust_op *ast_pointer_type (const struct rust_op *type, | |
285 | int is_mut); | |
286 | const struct rust_op *ast_function_type (const struct rust_op *result, | |
287 | rust_op_vector *params); | |
288 | const struct rust_op *ast_tuple_type (rust_op_vector *params); | |
289 | ||
290 | ||
3232fabd TT |
291 | /* A pointer to this is installed globally. */ |
292 | auto_obstack obstack; | |
293 | ||
294 | /* Result of parsing. Points into obstack. */ | |
295 | const struct rust_op *rust_ast; | |
296 | ||
297 | /* This keeps track of the various vectors we allocate. */ | |
298 | std::vector<std::unique_ptr<rust_set_vector>> set_vectors; | |
299 | std::vector<std::unique_ptr<rust_op_vector>> op_vectors; | |
300 | ||
301 | /* The parser state gdb gave us. */ | |
302 | struct parser_state *pstate; | |
303 | }; | |
c44af4eb | 304 | |
56ba65a0 TT |
305 | /* Rust AST operations. We build a tree of these; then lower them to |
306 | gdb expressions when parsing has completed. */ | |
c44af4eb TT |
307 | |
308 | struct rust_op | |
309 | { | |
310 | /* The opcode. */ | |
311 | enum exp_opcode opcode; | |
312 | /* If OPCODE is OP_TYPE, then this holds information about what type | |
313 | is described by this node. */ | |
314 | enum type_code typecode; | |
315 | /* Indicates whether OPCODE actually represents a compound | |
316 | assignment. For example, if OPCODE is GTGT and this is false, | |
317 | then this rust_op represents an ordinary ">>"; but if this is | |
318 | true, then this rust_op represents ">>=". Unused in other | |
319 | cases. */ | |
320 | unsigned int compound_assignment : 1; | |
321 | /* Only used by a field expression; if set, indicates that the field | |
322 | name occurred at the end of the expression and is eligible for | |
323 | completion. */ | |
324 | unsigned int completing : 1; | |
6873858b TT |
325 | /* For OP_RANGE, indicates whether the range is inclusive or |
326 | exclusive. */ | |
327 | unsigned int inclusive : 1; | |
c44af4eb TT |
328 | /* Operands of expression. Which one is used and how depends on the |
329 | particular opcode. */ | |
330 | RUSTSTYPE left; | |
331 | RUSTSTYPE right; | |
332 | }; | |
333 | ||
334 | %} | |
335 | ||
336 | %token <sval> GDBVAR | |
337 | %token <sval> IDENT | |
338 | %token <sval> COMPLETE | |
339 | %token <typed_val_int> INTEGER | |
340 | %token <typed_val_int> DECIMAL_INTEGER | |
341 | %token <sval> STRING | |
342 | %token <sval> BYTESTRING | |
343 | %token <typed_val_float> FLOAT | |
344 | %token <opcode> COMPOUND_ASSIGN | |
345 | ||
346 | /* Keyword tokens. */ | |
347 | %token <voidval> KW_AS | |
348 | %token <voidval> KW_IF | |
349 | %token <voidval> KW_TRUE | |
350 | %token <voidval> KW_FALSE | |
351 | %token <voidval> KW_SUPER | |
352 | %token <voidval> KW_SELF | |
353 | %token <voidval> KW_MUT | |
354 | %token <voidval> KW_EXTERN | |
355 | %token <voidval> KW_CONST | |
356 | %token <voidval> KW_FN | |
cdf5a07c | 357 | %token <voidval> KW_SIZEOF |
c44af4eb TT |
358 | |
359 | /* Operator tokens. */ | |
360 | %token <voidval> DOTDOT | |
6873858b | 361 | %token <voidval> DOTDOTEQ |
c44af4eb TT |
362 | %token <voidval> OROR |
363 | %token <voidval> ANDAND | |
364 | %token <voidval> EQEQ | |
365 | %token <voidval> NOTEQ | |
366 | %token <voidval> LTEQ | |
367 | %token <voidval> GTEQ | |
368 | %token <voidval> LSH RSH | |
369 | %token <voidval> COLONCOLON | |
370 | %token <voidval> ARROW | |
371 | ||
372 | %type <op> type | |
373 | %type <op> path_for_expr | |
374 | %type <op> identifier_path_for_expr | |
375 | %type <op> path_for_type | |
376 | %type <op> identifier_path_for_type | |
377 | %type <op> just_identifiers_for_type | |
378 | ||
379 | %type <params> maybe_type_list | |
380 | %type <params> type_list | |
381 | ||
382 | %type <depth> super_path | |
383 | ||
384 | %type <op> literal | |
385 | %type <op> expr | |
386 | %type <op> field_expr | |
387 | %type <op> idx_expr | |
388 | %type <op> unop_expr | |
389 | %type <op> binop_expr | |
390 | %type <op> binop_expr_expr | |
391 | %type <op> type_cast_expr | |
392 | %type <op> assignment_expr | |
393 | %type <op> compound_assignment_expr | |
394 | %type <op> paren_expr | |
395 | %type <op> call_expr | |
396 | %type <op> path_expr | |
397 | %type <op> tuple_expr | |
398 | %type <op> unit_expr | |
399 | %type <op> struct_expr | |
400 | %type <op> array_expr | |
401 | %type <op> range_expr | |
402 | ||
403 | %type <params> expr_list | |
404 | %type <params> maybe_expr_list | |
405 | %type <params> paren_expr_list | |
406 | ||
407 | %type <field_inits> struct_expr_list | |
408 | %type <one_field_init> struct_expr_tail | |
409 | ||
410 | /* Precedence. */ | |
6873858b | 411 | %nonassoc DOTDOT DOTDOTEQ |
c44af4eb TT |
412 | %right '=' COMPOUND_ASSIGN |
413 | %left OROR | |
414 | %left ANDAND | |
415 | %nonassoc EQEQ NOTEQ '<' '>' LTEQ GTEQ | |
416 | %left '|' | |
417 | %left '^' | |
418 | %left '&' | |
419 | %left LSH RSH | |
420 | %left '@' | |
421 | %left '+' '-' | |
422 | %left '*' '/' '%' | |
423 | /* These could be %precedence in Bison, but that isn't a yacc | |
424 | feature. */ | |
425 | %left KW_AS | |
426 | %left UNARY | |
427 | %left '[' '.' '(' | |
428 | ||
429 | %% | |
430 | ||
431 | start: | |
432 | expr | |
433 | { | |
434 | /* If we are completing and see a valid parse, | |
435 | rust_ast will already have been set. */ | |
56ba65a0 TT |
436 | if (parser->rust_ast == NULL) |
437 | parser->rust_ast = $1; | |
c44af4eb TT |
438 | } |
439 | ; | |
440 | ||
441 | /* Note that the Rust grammar includes a method_call_expr, but we | |
442 | handle this differently, to avoid a shift/reduce conflict with | |
443 | call_expr. */ | |
444 | expr: | |
445 | literal | |
446 | | path_expr | |
447 | | tuple_expr | |
448 | | unit_expr | |
449 | | struct_expr | |
450 | | field_expr | |
451 | | array_expr | |
452 | | idx_expr | |
453 | | range_expr | |
d8344f3d TT |
454 | | unop_expr /* Must precede call_expr because of ambiguity with |
455 | sizeof. */ | |
c44af4eb TT |
456 | | binop_expr |
457 | | paren_expr | |
458 | | call_expr | |
459 | ; | |
460 | ||
461 | tuple_expr: | |
462 | '(' expr ',' maybe_expr_list ')' | |
463 | { | |
3232fabd | 464 | $4->push_back ($2); |
c44af4eb TT |
465 | error (_("Tuple expressions not supported yet")); |
466 | } | |
467 | ; | |
468 | ||
469 | unit_expr: | |
470 | '(' ')' | |
471 | { | |
472 | struct typed_val_int val; | |
473 | ||
474 | val.type | |
d8344f3d | 475 | = (language_lookup_primitive_type |
56ba65a0 | 476 | (parser->language (), parser->arch (), |
d8344f3d | 477 | "()")); |
c44af4eb | 478 | val.val = 0; |
56ba65a0 | 479 | $$ = parser->ast_literal (val); |
c44af4eb TT |
480 | } |
481 | ; | |
482 | ||
483 | /* To avoid a shift/reduce conflict with call_expr, we don't handle | |
484 | tuple struct expressions here, but instead when examining the | |
485 | AST. */ | |
486 | struct_expr: | |
487 | path_for_expr '{' struct_expr_list '}' | |
56ba65a0 | 488 | { $$ = parser->ast_struct ($1, $3); } |
c44af4eb TT |
489 | ; |
490 | ||
491 | struct_expr_tail: | |
492 | DOTDOT expr | |
493 | { | |
494 | struct set_field sf; | |
495 | ||
496 | sf.name.ptr = NULL; | |
497 | sf.name.length = 0; | |
498 | sf.init = $2; | |
499 | ||
500 | $$ = sf; | |
501 | } | |
502 | | IDENT ':' expr | |
503 | { | |
504 | struct set_field sf; | |
505 | ||
506 | sf.name = $1; | |
507 | sf.init = $3; | |
508 | $$ = sf; | |
509 | } | |
92630041 TT |
510 | | IDENT |
511 | { | |
512 | struct set_field sf; | |
513 | ||
514 | sf.name = $1; | |
56ba65a0 | 515 | sf.init = parser->ast_path ($1, NULL); |
92630041 TT |
516 | $$ = sf; |
517 | } | |
c44af4eb TT |
518 | ; |
519 | ||
c44af4eb | 520 | struct_expr_list: |
12df5c00 TT |
521 | /* %empty */ |
522 | { | |
56ba65a0 | 523 | $$ = parser->new_set_vector (); |
12df5c00 TT |
524 | } |
525 | | struct_expr_tail | |
c44af4eb | 526 | { |
56ba65a0 | 527 | rust_set_vector *result = parser->new_set_vector (); |
3232fabd | 528 | result->push_back ($1); |
c44af4eb TT |
529 | $$ = result; |
530 | } | |
531 | | IDENT ':' expr ',' struct_expr_list | |
532 | { | |
533 | struct set_field sf; | |
534 | ||
535 | sf.name = $1; | |
536 | sf.init = $3; | |
3232fabd | 537 | $5->push_back (sf); |
c44af4eb TT |
538 | $$ = $5; |
539 | } | |
92630041 TT |
540 | | IDENT ',' struct_expr_list |
541 | { | |
542 | struct set_field sf; | |
543 | ||
544 | sf.name = $1; | |
56ba65a0 | 545 | sf.init = parser->ast_path ($1, NULL); |
92630041 TT |
546 | $3->push_back (sf); |
547 | $$ = $3; | |
548 | } | |
c44af4eb TT |
549 | ; |
550 | ||
551 | array_expr: | |
552 | '[' KW_MUT expr_list ']' | |
56ba65a0 | 553 | { $$ = parser->ast_call_ish (OP_ARRAY, NULL, $3); } |
c44af4eb | 554 | | '[' expr_list ']' |
56ba65a0 | 555 | { $$ = parser->ast_call_ish (OP_ARRAY, NULL, $2); } |
c44af4eb | 556 | | '[' KW_MUT expr ';' expr ']' |
56ba65a0 | 557 | { $$ = parser->ast_operation (OP_RUST_ARRAY, $3, $5); } |
c44af4eb | 558 | | '[' expr ';' expr ']' |
56ba65a0 | 559 | { $$ = parser->ast_operation (OP_RUST_ARRAY, $2, $4); } |
c44af4eb TT |
560 | ; |
561 | ||
562 | range_expr: | |
563 | expr DOTDOT | |
56ba65a0 | 564 | { $$ = parser->ast_range ($1, NULL, false); } |
c44af4eb | 565 | | expr DOTDOT expr |
56ba65a0 | 566 | { $$ = parser->ast_range ($1, $3, false); } |
6873858b | 567 | | expr DOTDOTEQ expr |
56ba65a0 | 568 | { $$ = parser->ast_range ($1, $3, true); } |
c44af4eb | 569 | | DOTDOT expr |
56ba65a0 | 570 | { $$ = parser->ast_range (NULL, $2, false); } |
6873858b | 571 | | DOTDOTEQ expr |
56ba65a0 | 572 | { $$ = parser->ast_range (NULL, $2, true); } |
c44af4eb | 573 | | DOTDOT |
56ba65a0 | 574 | { $$ = parser->ast_range (NULL, NULL, false); } |
c44af4eb TT |
575 | ; |
576 | ||
577 | literal: | |
578 | INTEGER | |
56ba65a0 | 579 | { $$ = parser->ast_literal ($1); } |
c44af4eb | 580 | | DECIMAL_INTEGER |
56ba65a0 | 581 | { $$ = parser->ast_literal ($1); } |
c44af4eb | 582 | | FLOAT |
56ba65a0 | 583 | { $$ = parser->ast_dliteral ($1); } |
c44af4eb TT |
584 | | STRING |
585 | { | |
c44af4eb TT |
586 | struct set_field field; |
587 | struct typed_val_int val; | |
588 | struct stoken token; | |
589 | ||
56ba65a0 | 590 | rust_set_vector *fields = parser->new_set_vector (); |
c44af4eb TT |
591 | |
592 | /* Wrap the raw string in the &str struct. */ | |
593 | field.name.ptr = "data_ptr"; | |
594 | field.name.length = strlen (field.name.ptr); | |
56ba65a0 TT |
595 | field.init = parser->ast_unary (UNOP_ADDR, |
596 | parser->ast_string ($1)); | |
3232fabd | 597 | fields->push_back (field); |
c44af4eb | 598 | |
56ba65a0 | 599 | val.type = parser->get_type ("usize"); |
c44af4eb TT |
600 | val.val = $1.length; |
601 | ||
602 | field.name.ptr = "length"; | |
603 | field.name.length = strlen (field.name.ptr); | |
56ba65a0 | 604 | field.init = parser->ast_literal (val); |
3232fabd | 605 | fields->push_back (field); |
c44af4eb TT |
606 | |
607 | token.ptr = "&str"; | |
608 | token.length = strlen (token.ptr); | |
56ba65a0 TT |
609 | $$ = parser->ast_struct (parser->ast_path (token, NULL), |
610 | fields); | |
c44af4eb TT |
611 | } |
612 | | BYTESTRING | |
56ba65a0 | 613 | { $$ = parser->ast_string ($1); } |
c44af4eb TT |
614 | | KW_TRUE |
615 | { | |
616 | struct typed_val_int val; | |
617 | ||
56ba65a0 TT |
618 | val.type = language_bool_type (parser->language (), |
619 | parser->arch ()); | |
c44af4eb | 620 | val.val = 1; |
56ba65a0 | 621 | $$ = parser->ast_literal (val); |
c44af4eb TT |
622 | } |
623 | | KW_FALSE | |
624 | { | |
625 | struct typed_val_int val; | |
626 | ||
56ba65a0 TT |
627 | val.type = language_bool_type (parser->language (), |
628 | parser->arch ()); | |
c44af4eb | 629 | val.val = 0; |
56ba65a0 | 630 | $$ = parser->ast_literal (val); |
c44af4eb TT |
631 | } |
632 | ; | |
633 | ||
634 | field_expr: | |
635 | expr '.' IDENT | |
56ba65a0 | 636 | { $$ = parser->ast_structop ($1, $3.ptr, 0); } |
c44af4eb TT |
637 | | expr '.' COMPLETE |
638 | { | |
56ba65a0 TT |
639 | $$ = parser->ast_structop ($1, $3.ptr, 1); |
640 | parser->rust_ast = $$; | |
c44af4eb TT |
641 | } |
642 | | expr '.' DECIMAL_INTEGER | |
56ba65a0 | 643 | { $$ = parser->ast_structop_anonymous ($1, $3); } |
c44af4eb TT |
644 | ; |
645 | ||
646 | idx_expr: | |
647 | expr '[' expr ']' | |
56ba65a0 | 648 | { $$ = parser->ast_operation (BINOP_SUBSCRIPT, $1, $3); } |
c44af4eb TT |
649 | ; |
650 | ||
651 | unop_expr: | |
652 | '+' expr %prec UNARY | |
56ba65a0 | 653 | { $$ = parser->ast_unary (UNOP_PLUS, $2); } |
c44af4eb TT |
654 | |
655 | | '-' expr %prec UNARY | |
56ba65a0 | 656 | { $$ = parser->ast_unary (UNOP_NEG, $2); } |
c44af4eb TT |
657 | |
658 | | '!' expr %prec UNARY | |
659 | { | |
660 | /* Note that we provide a Rust-specific evaluator | |
661 | override for UNOP_COMPLEMENT, so it can do the | |
662 | right thing for both bool and integral | |
663 | values. */ | |
56ba65a0 | 664 | $$ = parser->ast_unary (UNOP_COMPLEMENT, $2); |
c44af4eb TT |
665 | } |
666 | ||
667 | | '*' expr %prec UNARY | |
56ba65a0 | 668 | { $$ = parser->ast_unary (UNOP_IND, $2); } |
c44af4eb TT |
669 | |
670 | | '&' expr %prec UNARY | |
56ba65a0 | 671 | { $$ = parser->ast_unary (UNOP_ADDR, $2); } |
c44af4eb TT |
672 | |
673 | | '&' KW_MUT expr %prec UNARY | |
56ba65a0 | 674 | { $$ = parser->ast_unary (UNOP_ADDR, $3); } |
d8344f3d | 675 | | KW_SIZEOF '(' expr ')' %prec UNARY |
56ba65a0 | 676 | { $$ = parser->ast_unary (UNOP_SIZEOF, $3); } |
c44af4eb TT |
677 | ; |
678 | ||
679 | binop_expr: | |
680 | binop_expr_expr | |
681 | | type_cast_expr | |
682 | | assignment_expr | |
683 | | compound_assignment_expr | |
684 | ; | |
685 | ||
686 | binop_expr_expr: | |
687 | expr '*' expr | |
56ba65a0 | 688 | { $$ = parser->ast_operation (BINOP_MUL, $1, $3); } |
c44af4eb TT |
689 | |
690 | | expr '@' expr | |
56ba65a0 | 691 | { $$ = parser->ast_operation (BINOP_REPEAT, $1, $3); } |
c44af4eb TT |
692 | |
693 | | expr '/' expr | |
56ba65a0 | 694 | { $$ = parser->ast_operation (BINOP_DIV, $1, $3); } |
c44af4eb TT |
695 | |
696 | | expr '%' expr | |
56ba65a0 | 697 | { $$ = parser->ast_operation (BINOP_REM, $1, $3); } |
c44af4eb TT |
698 | |
699 | | expr '<' expr | |
56ba65a0 | 700 | { $$ = parser->ast_operation (BINOP_LESS, $1, $3); } |
c44af4eb TT |
701 | |
702 | | expr '>' expr | |
56ba65a0 | 703 | { $$ = parser->ast_operation (BINOP_GTR, $1, $3); } |
c44af4eb TT |
704 | |
705 | | expr '&' expr | |
56ba65a0 | 706 | { $$ = parser->ast_operation (BINOP_BITWISE_AND, $1, $3); } |
c44af4eb TT |
707 | |
708 | | expr '|' expr | |
56ba65a0 | 709 | { $$ = parser->ast_operation (BINOP_BITWISE_IOR, $1, $3); } |
c44af4eb TT |
710 | |
711 | | expr '^' expr | |
56ba65a0 | 712 | { $$ = parser->ast_operation (BINOP_BITWISE_XOR, $1, $3); } |
c44af4eb TT |
713 | |
714 | | expr '+' expr | |
56ba65a0 | 715 | { $$ = parser->ast_operation (BINOP_ADD, $1, $3); } |
c44af4eb TT |
716 | |
717 | | expr '-' expr | |
56ba65a0 | 718 | { $$ = parser->ast_operation (BINOP_SUB, $1, $3); } |
c44af4eb TT |
719 | |
720 | | expr OROR expr | |
56ba65a0 | 721 | { $$ = parser->ast_operation (BINOP_LOGICAL_OR, $1, $3); } |
c44af4eb TT |
722 | |
723 | | expr ANDAND expr | |
56ba65a0 | 724 | { $$ = parser->ast_operation (BINOP_LOGICAL_AND, $1, $3); } |
c44af4eb TT |
725 | |
726 | | expr EQEQ expr | |
56ba65a0 | 727 | { $$ = parser->ast_operation (BINOP_EQUAL, $1, $3); } |
c44af4eb TT |
728 | |
729 | | expr NOTEQ expr | |
56ba65a0 | 730 | { $$ = parser->ast_operation (BINOP_NOTEQUAL, $1, $3); } |
c44af4eb TT |
731 | |
732 | | expr LTEQ expr | |
56ba65a0 | 733 | { $$ = parser->ast_operation (BINOP_LEQ, $1, $3); } |
c44af4eb TT |
734 | |
735 | | expr GTEQ expr | |
56ba65a0 | 736 | { $$ = parser->ast_operation (BINOP_GEQ, $1, $3); } |
c44af4eb TT |
737 | |
738 | | expr LSH expr | |
56ba65a0 | 739 | { $$ = parser->ast_operation (BINOP_LSH, $1, $3); } |
c44af4eb TT |
740 | |
741 | | expr RSH expr | |
56ba65a0 | 742 | { $$ = parser->ast_operation (BINOP_RSH, $1, $3); } |
c44af4eb TT |
743 | ; |
744 | ||
745 | type_cast_expr: | |
746 | expr KW_AS type | |
56ba65a0 | 747 | { $$ = parser->ast_cast ($1, $3); } |
c44af4eb TT |
748 | ; |
749 | ||
750 | assignment_expr: | |
751 | expr '=' expr | |
56ba65a0 | 752 | { $$ = parser->ast_operation (BINOP_ASSIGN, $1, $3); } |
c44af4eb TT |
753 | ; |
754 | ||
755 | compound_assignment_expr: | |
756 | expr COMPOUND_ASSIGN expr | |
56ba65a0 | 757 | { $$ = parser->ast_compound_assignment ($2, $1, $3); } |
c44af4eb TT |
758 | |
759 | ; | |
760 | ||
761 | paren_expr: | |
762 | '(' expr ')' | |
763 | { $$ = $2; } | |
764 | ; | |
765 | ||
766 | expr_list: | |
767 | expr | |
768 | { | |
56ba65a0 | 769 | $$ = parser->new_op_vector (); |
3232fabd | 770 | $$->push_back ($1); |
c44af4eb TT |
771 | } |
772 | | expr_list ',' expr | |
773 | { | |
3232fabd | 774 | $1->push_back ($3); |
c44af4eb TT |
775 | $$ = $1; |
776 | } | |
777 | ; | |
778 | ||
779 | maybe_expr_list: | |
780 | /* %empty */ | |
781 | { | |
782 | /* The result can't be NULL. */ | |
56ba65a0 | 783 | $$ = parser->new_op_vector (); |
c44af4eb TT |
784 | } |
785 | | expr_list | |
786 | { $$ = $1; } | |
787 | ; | |
788 | ||
789 | paren_expr_list: | |
d8344f3d | 790 | '(' maybe_expr_list ')' |
c44af4eb TT |
791 | { $$ = $2; } |
792 | ; | |
793 | ||
794 | call_expr: | |
795 | expr paren_expr_list | |
56ba65a0 | 796 | { $$ = parser->ast_call_ish (OP_FUNCALL, $1, $2); } |
c44af4eb TT |
797 | ; |
798 | ||
799 | maybe_self_path: | |
800 | /* %empty */ | |
801 | | KW_SELF COLONCOLON | |
802 | ; | |
803 | ||
804 | super_path: | |
805 | KW_SUPER COLONCOLON | |
806 | { $$ = 1; } | |
807 | | super_path KW_SUPER COLONCOLON | |
808 | { $$ = $1 + 1; } | |
809 | ; | |
810 | ||
811 | path_expr: | |
812 | path_for_expr | |
813 | { $$ = $1; } | |
814 | | GDBVAR | |
56ba65a0 | 815 | { $$ = parser->ast_path ($1, NULL); } |
c44af4eb | 816 | | KW_SELF |
56ba65a0 | 817 | { $$ = parser->ast_path (make_stoken ("self"), NULL); } |
c44af4eb TT |
818 | ; |
819 | ||
820 | path_for_expr: | |
821 | identifier_path_for_expr | |
822 | | KW_SELF COLONCOLON identifier_path_for_expr | |
56ba65a0 | 823 | { $$ = parser->super_name ($3, 0); } |
c44af4eb | 824 | | maybe_self_path super_path identifier_path_for_expr |
56ba65a0 | 825 | { $$ = parser->super_name ($3, $2); } |
c44af4eb | 826 | | COLONCOLON identifier_path_for_expr |
56ba65a0 | 827 | { $$ = parser->crate_name ($2); } |
c44af4eb TT |
828 | | KW_EXTERN identifier_path_for_expr |
829 | { | |
830 | /* This is a gdb extension to make it possible to | |
831 | refer to items in other crates. It just bypasses | |
832 | adding the current crate to the front of the | |
833 | name. */ | |
56ba65a0 TT |
834 | $$ = parser->ast_path (parser->concat3 ("::", |
835 | $2->left.sval.ptr, | |
836 | NULL), | |
837 | $2->right.params); | |
c44af4eb TT |
838 | } |
839 | ; | |
840 | ||
841 | identifier_path_for_expr: | |
842 | IDENT | |
56ba65a0 | 843 | { $$ = parser->ast_path ($1, NULL); } |
c44af4eb TT |
844 | | identifier_path_for_expr COLONCOLON IDENT |
845 | { | |
56ba65a0 TT |
846 | $$ = parser->ast_path (parser->concat3 ($1->left.sval.ptr, |
847 | "::", $3.ptr), | |
848 | NULL); | |
c44af4eb TT |
849 | } |
850 | | identifier_path_for_expr COLONCOLON '<' type_list '>' | |
56ba65a0 | 851 | { $$ = parser->ast_path ($1->left.sval, $4); } |
c44af4eb TT |
852 | | identifier_path_for_expr COLONCOLON '<' type_list RSH |
853 | { | |
56ba65a0 | 854 | $$ = parser->ast_path ($1->left.sval, $4); |
c44af4eb TT |
855 | rust_push_back ('>'); |
856 | } | |
857 | ; | |
858 | ||
859 | path_for_type: | |
860 | identifier_path_for_type | |
861 | | KW_SELF COLONCOLON identifier_path_for_type | |
56ba65a0 | 862 | { $$ = parser->super_name ($3, 0); } |
c44af4eb | 863 | | maybe_self_path super_path identifier_path_for_type |
56ba65a0 | 864 | { $$ = parser->super_name ($3, $2); } |
c44af4eb | 865 | | COLONCOLON identifier_path_for_type |
56ba65a0 | 866 | { $$ = parser->crate_name ($2); } |
c44af4eb TT |
867 | | KW_EXTERN identifier_path_for_type |
868 | { | |
869 | /* This is a gdb extension to make it possible to | |
870 | refer to items in other crates. It just bypasses | |
871 | adding the current crate to the front of the | |
872 | name. */ | |
56ba65a0 TT |
873 | $$ = parser->ast_path (parser->concat3 ("::", |
874 | $2->left.sval.ptr, | |
875 | NULL), | |
876 | $2->right.params); | |
c44af4eb TT |
877 | } |
878 | ; | |
879 | ||
880 | just_identifiers_for_type: | |
881 | IDENT | |
56ba65a0 | 882 | { $$ = parser->ast_path ($1, NULL); } |
c44af4eb TT |
883 | | just_identifiers_for_type COLONCOLON IDENT |
884 | { | |
56ba65a0 TT |
885 | $$ = parser->ast_path (parser->concat3 ($1->left.sval.ptr, |
886 | "::", $3.ptr), | |
887 | NULL); | |
c44af4eb TT |
888 | } |
889 | ; | |
890 | ||
891 | identifier_path_for_type: | |
892 | just_identifiers_for_type | |
893 | | just_identifiers_for_type '<' type_list '>' | |
56ba65a0 | 894 | { $$ = parser->ast_path ($1->left.sval, $3); } |
c44af4eb TT |
895 | | just_identifiers_for_type '<' type_list RSH |
896 | { | |
56ba65a0 | 897 | $$ = parser->ast_path ($1->left.sval, $3); |
c44af4eb TT |
898 | rust_push_back ('>'); |
899 | } | |
900 | ; | |
901 | ||
902 | type: | |
903 | path_for_type | |
904 | | '[' type ';' INTEGER ']' | |
56ba65a0 | 905 | { $$ = parser->ast_array_type ($2, $4); } |
c44af4eb | 906 | | '[' type ';' DECIMAL_INTEGER ']' |
56ba65a0 | 907 | { $$ = parser->ast_array_type ($2, $4); } |
c44af4eb | 908 | | '&' '[' type ']' |
56ba65a0 | 909 | { $$ = parser->ast_slice_type ($3); } |
c44af4eb | 910 | | '&' type |
56ba65a0 | 911 | { $$ = parser->ast_reference_type ($2); } |
c44af4eb | 912 | | '*' KW_MUT type |
56ba65a0 | 913 | { $$ = parser->ast_pointer_type ($3, 1); } |
c44af4eb | 914 | | '*' KW_CONST type |
56ba65a0 | 915 | { $$ = parser->ast_pointer_type ($3, 0); } |
c44af4eb | 916 | | KW_FN '(' maybe_type_list ')' ARROW type |
56ba65a0 | 917 | { $$ = parser->ast_function_type ($6, $3); } |
c44af4eb | 918 | | '(' maybe_type_list ')' |
56ba65a0 | 919 | { $$ = parser->ast_tuple_type ($2); } |
c44af4eb TT |
920 | ; |
921 | ||
922 | maybe_type_list: | |
923 | /* %empty */ | |
924 | { $$ = NULL; } | |
925 | | type_list | |
926 | { $$ = $1; } | |
927 | ; | |
928 | ||
929 | type_list: | |
930 | type | |
931 | { | |
56ba65a0 | 932 | rust_op_vector *result = parser->new_op_vector (); |
3232fabd | 933 | result->push_back ($1); |
c44af4eb TT |
934 | $$ = result; |
935 | } | |
936 | | type_list ',' type | |
937 | { | |
3232fabd | 938 | $1->push_back ($3); |
c44af4eb TT |
939 | $$ = $1; |
940 | } | |
941 | ; | |
942 | ||
943 | %% | |
944 | ||
945 | /* A struct of this type is used to describe a token. */ | |
946 | ||
947 | struct token_info | |
948 | { | |
949 | const char *name; | |
950 | int value; | |
951 | enum exp_opcode opcode; | |
952 | }; | |
953 | ||
954 | /* Identifier tokens. */ | |
955 | ||
956 | static const struct token_info identifier_tokens[] = | |
957 | { | |
958 | { "as", KW_AS, OP_NULL }, | |
959 | { "false", KW_FALSE, OP_NULL }, | |
960 | { "if", 0, OP_NULL }, | |
961 | { "mut", KW_MUT, OP_NULL }, | |
962 | { "const", KW_CONST, OP_NULL }, | |
963 | { "self", KW_SELF, OP_NULL }, | |
964 | { "super", KW_SUPER, OP_NULL }, | |
965 | { "true", KW_TRUE, OP_NULL }, | |
966 | { "extern", KW_EXTERN, OP_NULL }, | |
967 | { "fn", KW_FN, OP_NULL }, | |
cdf5a07c | 968 | { "sizeof", KW_SIZEOF, OP_NULL }, |
c44af4eb TT |
969 | }; |
970 | ||
971 | /* Operator tokens, sorted longest first. */ | |
972 | ||
973 | static const struct token_info operator_tokens[] = | |
974 | { | |
975 | { ">>=", COMPOUND_ASSIGN, BINOP_RSH }, | |
976 | { "<<=", COMPOUND_ASSIGN, BINOP_LSH }, | |
977 | ||
978 | { "<<", LSH, OP_NULL }, | |
979 | { ">>", RSH, OP_NULL }, | |
980 | { "&&", ANDAND, OP_NULL }, | |
981 | { "||", OROR, OP_NULL }, | |
982 | { "==", EQEQ, OP_NULL }, | |
983 | { "!=", NOTEQ, OP_NULL }, | |
984 | { "<=", LTEQ, OP_NULL }, | |
985 | { ">=", GTEQ, OP_NULL }, | |
986 | { "+=", COMPOUND_ASSIGN, BINOP_ADD }, | |
987 | { "-=", COMPOUND_ASSIGN, BINOP_SUB }, | |
988 | { "*=", COMPOUND_ASSIGN, BINOP_MUL }, | |
989 | { "/=", COMPOUND_ASSIGN, BINOP_DIV }, | |
990 | { "%=", COMPOUND_ASSIGN, BINOP_REM }, | |
991 | { "&=", COMPOUND_ASSIGN, BINOP_BITWISE_AND }, | |
992 | { "|=", COMPOUND_ASSIGN, BINOP_BITWISE_IOR }, | |
993 | { "^=", COMPOUND_ASSIGN, BINOP_BITWISE_XOR }, | |
6873858b | 994 | { "..=", DOTDOTEQ, OP_NULL }, |
c44af4eb TT |
995 | |
996 | { "::", COLONCOLON, OP_NULL }, | |
997 | { "..", DOTDOT, OP_NULL }, | |
998 | { "->", ARROW, OP_NULL } | |
999 | }; | |
1000 | ||
1001 | /* Helper function to copy to the name obstack. */ | |
1002 | ||
56ba65a0 TT |
1003 | const char * |
1004 | rust_parser::copy_name (const char *name, int len) | |
c44af4eb | 1005 | { |
56ba65a0 | 1006 | return (const char *) obstack_copy0 (&obstack, name, len); |
c44af4eb TT |
1007 | } |
1008 | ||
1009 | /* Helper function to make an stoken from a C string. */ | |
1010 | ||
1011 | static struct stoken | |
1012 | make_stoken (const char *p) | |
1013 | { | |
1014 | struct stoken result; | |
1015 | ||
1016 | result.ptr = p; | |
1017 | result.length = strlen (result.ptr); | |
1018 | return result; | |
1019 | } | |
1020 | ||
1021 | /* Helper function to concatenate three strings on the name | |
1022 | obstack. */ | |
1023 | ||
56ba65a0 TT |
1024 | struct stoken |
1025 | rust_parser::concat3 (const char *s1, const char *s2, const char *s3) | |
c44af4eb | 1026 | { |
56ba65a0 | 1027 | return make_stoken (obconcat (&obstack, s1, s2, s3, (char *) NULL)); |
c44af4eb TT |
1028 | } |
1029 | ||
1030 | /* Return an AST node referring to NAME, but relative to the crate's | |
1031 | name. */ | |
1032 | ||
56ba65a0 TT |
1033 | const struct rust_op * |
1034 | rust_parser::crate_name (const struct rust_op *name) | |
c44af4eb | 1035 | { |
03c85b11 | 1036 | std::string crate = rust_crate_for_block (expression_context_block); |
c44af4eb TT |
1037 | struct stoken result; |
1038 | ||
1039 | gdb_assert (name->opcode == OP_VAR_VALUE); | |
1040 | ||
03c85b11 | 1041 | if (crate.empty ()) |
c44af4eb | 1042 | error (_("Could not find crate for current location")); |
56ba65a0 | 1043 | result = make_stoken (obconcat (&obstack, "::", crate.c_str (), "::", |
c44af4eb | 1044 | name->left.sval.ptr, (char *) NULL)); |
c44af4eb TT |
1045 | |
1046 | return ast_path (result, name->right.params); | |
1047 | } | |
1048 | ||
1049 | /* Create an AST node referring to a "super::" qualified name. IDENT | |
1050 | is the base name and N_SUPERS is how many "super::"s were | |
1051 | provided. N_SUPERS can be zero. */ | |
1052 | ||
56ba65a0 TT |
1053 | const struct rust_op * |
1054 | rust_parser::super_name (const struct rust_op *ident, unsigned int n_supers) | |
c44af4eb TT |
1055 | { |
1056 | const char *scope = block_scope (expression_context_block); | |
1057 | int offset; | |
1058 | ||
1059 | gdb_assert (ident->opcode == OP_VAR_VALUE); | |
1060 | ||
1061 | if (scope[0] == '\0') | |
1062 | error (_("Couldn't find namespace scope for self::")); | |
1063 | ||
1064 | if (n_supers > 0) | |
1065 | { | |
c44af4eb | 1066 | int len; |
8001f118 | 1067 | std::vector<int> offsets; |
78cc6c2d | 1068 | unsigned int current_len; |
c44af4eb | 1069 | |
c44af4eb | 1070 | current_len = cp_find_first_component (scope); |
c44af4eb TT |
1071 | while (scope[current_len] != '\0') |
1072 | { | |
8001f118 | 1073 | offsets.push_back (current_len); |
c44af4eb | 1074 | gdb_assert (scope[current_len] == ':'); |
c44af4eb TT |
1075 | /* The "::". */ |
1076 | current_len += 2; | |
1077 | current_len += cp_find_first_component (scope | |
1078 | + current_len); | |
1079 | } | |
1080 | ||
8001f118 | 1081 | len = offsets.size (); |
c44af4eb TT |
1082 | if (n_supers >= len) |
1083 | error (_("Too many super:: uses from '%s'"), scope); | |
1084 | ||
8001f118 | 1085 | offset = offsets[len - n_supers]; |
c44af4eb TT |
1086 | } |
1087 | else | |
1088 | offset = strlen (scope); | |
1089 | ||
56ba65a0 TT |
1090 | obstack_grow (&obstack, "::", 2); |
1091 | obstack_grow (&obstack, scope, offset); | |
1092 | obstack_grow (&obstack, "::", 2); | |
1093 | obstack_grow0 (&obstack, ident->left.sval.ptr, ident->left.sval.length); | |
c44af4eb | 1094 | |
56ba65a0 | 1095 | return ast_path (make_stoken ((const char *) obstack_finish (&obstack)), |
c44af4eb TT |
1096 | ident->right.params); |
1097 | } | |
1098 | ||
aee1fcdf | 1099 | /* A helper that updates the innermost block as appropriate. */ |
c44af4eb TT |
1100 | |
1101 | static void | |
1102 | update_innermost_block (struct block_symbol sym) | |
1103 | { | |
aee1fcdf AB |
1104 | if (symbol_read_needs_frame (sym.symbol)) |
1105 | innermost_block.update (sym); | |
c44af4eb TT |
1106 | } |
1107 | ||
c44af4eb TT |
1108 | /* Lex a hex number with at least MIN digits and at most MAX |
1109 | digits. */ | |
1110 | ||
1111 | static uint32_t | |
1112 | lex_hex (int min, int max) | |
1113 | { | |
1114 | uint32_t result = 0; | |
1115 | int len = 0; | |
1116 | /* We only want to stop at MAX if we're lexing a byte escape. */ | |
1117 | int check_max = min == max; | |
1118 | ||
1119 | while ((check_max ? len <= max : 1) | |
1120 | && ((lexptr[0] >= 'a' && lexptr[0] <= 'f') | |
1121 | || (lexptr[0] >= 'A' && lexptr[0] <= 'F') | |
1122 | || (lexptr[0] >= '0' && lexptr[0] <= '9'))) | |
1123 | { | |
1124 | result *= 16; | |
1125 | if (lexptr[0] >= 'a' && lexptr[0] <= 'f') | |
1126 | result = result + 10 + lexptr[0] - 'a'; | |
1127 | else if (lexptr[0] >= 'A' && lexptr[0] <= 'F') | |
1128 | result = result + 10 + lexptr[0] - 'A'; | |
1129 | else | |
1130 | result = result + lexptr[0] - '0'; | |
1131 | ++lexptr; | |
1132 | ++len; | |
1133 | } | |
1134 | ||
1135 | if (len < min) | |
1136 | error (_("Not enough hex digits seen")); | |
1137 | if (len > max) | |
1138 | { | |
1139 | gdb_assert (min != max); | |
1140 | error (_("Overlong hex escape")); | |
1141 | } | |
1142 | ||
1143 | return result; | |
1144 | } | |
1145 | ||
1146 | /* Lex an escape. IS_BYTE is true if we're lexing a byte escape; | |
1147 | otherwise we're lexing a character escape. */ | |
1148 | ||
1149 | static uint32_t | |
1150 | lex_escape (int is_byte) | |
1151 | { | |
1152 | uint32_t result; | |
1153 | ||
1154 | gdb_assert (lexptr[0] == '\\'); | |
1155 | ++lexptr; | |
1156 | switch (lexptr[0]) | |
1157 | { | |
1158 | case 'x': | |
1159 | ++lexptr; | |
1160 | result = lex_hex (2, 2); | |
1161 | break; | |
1162 | ||
1163 | case 'u': | |
1164 | if (is_byte) | |
1165 | error (_("Unicode escape in byte literal")); | |
1166 | ++lexptr; | |
1167 | if (lexptr[0] != '{') | |
1168 | error (_("Missing '{' in Unicode escape")); | |
1169 | ++lexptr; | |
1170 | result = lex_hex (1, 6); | |
1171 | /* Could do range checks here. */ | |
1172 | if (lexptr[0] != '}') | |
1173 | error (_("Missing '}' in Unicode escape")); | |
1174 | ++lexptr; | |
1175 | break; | |
1176 | ||
1177 | case 'n': | |
1178 | result = '\n'; | |
1179 | ++lexptr; | |
1180 | break; | |
1181 | case 'r': | |
1182 | result = '\r'; | |
1183 | ++lexptr; | |
1184 | break; | |
1185 | case 't': | |
1186 | result = '\t'; | |
1187 | ++lexptr; | |
1188 | break; | |
1189 | case '\\': | |
1190 | result = '\\'; | |
1191 | ++lexptr; | |
1192 | break; | |
1193 | case '0': | |
1194 | result = '\0'; | |
1195 | ++lexptr; | |
1196 | break; | |
1197 | case '\'': | |
1198 | result = '\''; | |
1199 | ++lexptr; | |
1200 | break; | |
1201 | case '"': | |
1202 | result = '"'; | |
1203 | ++lexptr; | |
1204 | break; | |
1205 | ||
1206 | default: | |
1207 | error (_("Invalid escape \\%c in literal"), lexptr[0]); | |
1208 | } | |
1209 | ||
1210 | return result; | |
1211 | } | |
1212 | ||
1213 | /* Lex a character constant. */ | |
1214 | ||
56ba65a0 TT |
1215 | int |
1216 | rust_parser::lex_character (YYSTYPE *lvalp) | |
c44af4eb TT |
1217 | { |
1218 | int is_byte = 0; | |
1219 | uint32_t value; | |
1220 | ||
1221 | if (lexptr[0] == 'b') | |
1222 | { | |
1223 | is_byte = 1; | |
1224 | ++lexptr; | |
1225 | } | |
1226 | gdb_assert (lexptr[0] == '\''); | |
1227 | ++lexptr; | |
1228 | /* This should handle UTF-8 here. */ | |
1229 | if (lexptr[0] == '\\') | |
1230 | value = lex_escape (is_byte); | |
1231 | else | |
1232 | { | |
1233 | value = lexptr[0] & 0xff; | |
1234 | ++lexptr; | |
1235 | } | |
1236 | ||
1237 | if (lexptr[0] != '\'') | |
1238 | error (_("Unterminated character literal")); | |
1239 | ++lexptr; | |
1240 | ||
56ba65a0 TT |
1241 | lvalp->typed_val_int.val = value; |
1242 | lvalp->typed_val_int.type = get_type (is_byte ? "u8" : "char"); | |
c44af4eb TT |
1243 | |
1244 | return INTEGER; | |
1245 | } | |
1246 | ||
1247 | /* Return the offset of the double quote if STR looks like the start | |
1248 | of a raw string, or 0 if STR does not start a raw string. */ | |
1249 | ||
1250 | static int | |
1251 | starts_raw_string (const char *str) | |
1252 | { | |
1253 | const char *save = str; | |
1254 | ||
1255 | if (str[0] != 'r') | |
1256 | return 0; | |
1257 | ++str; | |
1258 | while (str[0] == '#') | |
1259 | ++str; | |
1260 | if (str[0] == '"') | |
1261 | return str - save; | |
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | /* Return true if STR looks like the end of a raw string that had N | |
1266 | hashes at the start. */ | |
1267 | ||
65c40c95 | 1268 | static bool |
c44af4eb TT |
1269 | ends_raw_string (const char *str, int n) |
1270 | { | |
1271 | int i; | |
1272 | ||
1273 | gdb_assert (str[0] == '"'); | |
1274 | for (i = 0; i < n; ++i) | |
1275 | if (str[i + 1] != '#') | |
65c40c95 TT |
1276 | return false; |
1277 | return true; | |
c44af4eb TT |
1278 | } |
1279 | ||
1280 | /* Lex a string constant. */ | |
1281 | ||
56ba65a0 TT |
1282 | int |
1283 | rust_parser::lex_string (YYSTYPE *lvalp) | |
c44af4eb TT |
1284 | { |
1285 | int is_byte = lexptr[0] == 'b'; | |
1286 | int raw_length; | |
c44af4eb TT |
1287 | |
1288 | if (is_byte) | |
1289 | ++lexptr; | |
1290 | raw_length = starts_raw_string (lexptr); | |
1291 | lexptr += raw_length; | |
1292 | gdb_assert (lexptr[0] == '"'); | |
1293 | ++lexptr; | |
1294 | ||
1295 | while (1) | |
1296 | { | |
1297 | uint32_t value; | |
1298 | ||
1299 | if (raw_length > 0) | |
1300 | { | |
1301 | if (lexptr[0] == '"' && ends_raw_string (lexptr, raw_length - 1)) | |
1302 | { | |
1303 | /* Exit with lexptr pointing after the final "#". */ | |
1304 | lexptr += raw_length; | |
1305 | break; | |
1306 | } | |
1307 | else if (lexptr[0] == '\0') | |
1308 | error (_("Unexpected EOF in string")); | |
1309 | ||
1310 | value = lexptr[0] & 0xff; | |
1311 | if (is_byte && value > 127) | |
1312 | error (_("Non-ASCII value in raw byte string")); | |
56ba65a0 | 1313 | obstack_1grow (&obstack, value); |
c44af4eb TT |
1314 | |
1315 | ++lexptr; | |
1316 | } | |
1317 | else if (lexptr[0] == '"') | |
1318 | { | |
1319 | /* Make sure to skip the quote. */ | |
1320 | ++lexptr; | |
1321 | break; | |
1322 | } | |
1323 | else if (lexptr[0] == '\\') | |
1324 | { | |
1325 | value = lex_escape (is_byte); | |
1326 | ||
1327 | if (is_byte) | |
56ba65a0 | 1328 | obstack_1grow (&obstack, value); |
c44af4eb TT |
1329 | else |
1330 | convert_between_encodings ("UTF-32", "UTF-8", (gdb_byte *) &value, | |
1331 | sizeof (value), sizeof (value), | |
56ba65a0 | 1332 | &obstack, translit_none); |
c44af4eb TT |
1333 | } |
1334 | else if (lexptr[0] == '\0') | |
1335 | error (_("Unexpected EOF in string")); | |
1336 | else | |
1337 | { | |
1338 | value = lexptr[0] & 0xff; | |
1339 | if (is_byte && value > 127) | |
1340 | error (_("Non-ASCII value in byte string")); | |
56ba65a0 | 1341 | obstack_1grow (&obstack, value); |
c44af4eb TT |
1342 | ++lexptr; |
1343 | } | |
1344 | } | |
1345 | ||
56ba65a0 TT |
1346 | lvalp->sval.length = obstack_object_size (&obstack); |
1347 | lvalp->sval.ptr = (const char *) obstack_finish (&obstack); | |
c44af4eb TT |
1348 | return is_byte ? BYTESTRING : STRING; |
1349 | } | |
1350 | ||
1351 | /* Return true if STRING starts with whitespace followed by a digit. */ | |
1352 | ||
65c40c95 | 1353 | static bool |
c44af4eb TT |
1354 | space_then_number (const char *string) |
1355 | { | |
1356 | const char *p = string; | |
1357 | ||
1358 | while (p[0] == ' ' || p[0] == '\t') | |
1359 | ++p; | |
1360 | if (p == string) | |
65c40c95 | 1361 | return false; |
c44af4eb TT |
1362 | |
1363 | return *p >= '0' && *p <= '9'; | |
1364 | } | |
1365 | ||
1366 | /* Return true if C can start an identifier. */ | |
1367 | ||
65c40c95 | 1368 | static bool |
c44af4eb TT |
1369 | rust_identifier_start_p (char c) |
1370 | { | |
1371 | return ((c >= 'a' && c <= 'z') | |
1372 | || (c >= 'A' && c <= 'Z') | |
1373 | || c == '_' | |
1374 | || c == '$'); | |
1375 | } | |
1376 | ||
1377 | /* Lex an identifier. */ | |
1378 | ||
56ba65a0 TT |
1379 | int |
1380 | rust_parser::lex_identifier (YYSTYPE *lvalp) | |
c44af4eb TT |
1381 | { |
1382 | const char *start = lexptr; | |
1383 | unsigned int length; | |
1384 | const struct token_info *token; | |
1385 | int i; | |
1386 | int is_gdb_var = lexptr[0] == '$'; | |
1387 | ||
1388 | gdb_assert (rust_identifier_start_p (lexptr[0])); | |
1389 | ||
1390 | ++lexptr; | |
1391 | ||
1392 | /* For the time being this doesn't handle Unicode rules. Non-ASCII | |
1393 | identifiers are gated anyway. */ | |
1394 | while ((lexptr[0] >= 'a' && lexptr[0] <= 'z') | |
1395 | || (lexptr[0] >= 'A' && lexptr[0] <= 'Z') | |
1396 | || lexptr[0] == '_' | |
1397 | || (is_gdb_var && lexptr[0] == '$') | |
1398 | || (lexptr[0] >= '0' && lexptr[0] <= '9')) | |
1399 | ++lexptr; | |
1400 | ||
1401 | ||
1402 | length = lexptr - start; | |
1403 | token = NULL; | |
1404 | for (i = 0; i < ARRAY_SIZE (identifier_tokens); ++i) | |
1405 | { | |
1406 | if (length == strlen (identifier_tokens[i].name) | |
1407 | && strncmp (identifier_tokens[i].name, start, length) == 0) | |
1408 | { | |
1409 | token = &identifier_tokens[i]; | |
1410 | break; | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | if (token != NULL) | |
1415 | { | |
1416 | if (token->value == 0) | |
1417 | { | |
1418 | /* Leave the terminating token alone. */ | |
1419 | lexptr = start; | |
1420 | return 0; | |
1421 | } | |
1422 | } | |
1423 | else if (token == NULL | |
1424 | && (strncmp (start, "thread", length) == 0 | |
1425 | || strncmp (start, "task", length) == 0) | |
1426 | && space_then_number (lexptr)) | |
1427 | { | |
1428 | /* "task" or "thread" followed by a number terminates the | |
1429 | parse, per gdb rules. */ | |
1430 | lexptr = start; | |
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | if (token == NULL || (parse_completion && lexptr[0] == '\0')) | |
56ba65a0 | 1435 | lvalp->sval = make_stoken (copy_name (start, length)); |
c44af4eb TT |
1436 | |
1437 | if (parse_completion && lexptr[0] == '\0') | |
1438 | { | |
1439 | /* Prevent rustyylex from returning two COMPLETE tokens. */ | |
1440 | prev_lexptr = lexptr; | |
1441 | return COMPLETE; | |
1442 | } | |
1443 | ||
1444 | if (token != NULL) | |
1445 | return token->value; | |
1446 | if (is_gdb_var) | |
1447 | return GDBVAR; | |
1448 | return IDENT; | |
1449 | } | |
1450 | ||
1451 | /* Lex an operator. */ | |
1452 | ||
1453 | static int | |
56ba65a0 | 1454 | lex_operator (YYSTYPE *lvalp) |
c44af4eb TT |
1455 | { |
1456 | const struct token_info *token = NULL; | |
1457 | int i; | |
1458 | ||
1459 | for (i = 0; i < ARRAY_SIZE (operator_tokens); ++i) | |
1460 | { | |
1461 | if (strncmp (operator_tokens[i].name, lexptr, | |
1462 | strlen (operator_tokens[i].name)) == 0) | |
1463 | { | |
1464 | lexptr += strlen (operator_tokens[i].name); | |
1465 | token = &operator_tokens[i]; | |
1466 | break; | |
1467 | } | |
1468 | } | |
1469 | ||
1470 | if (token != NULL) | |
1471 | { | |
56ba65a0 | 1472 | lvalp->opcode = token->opcode; |
c44af4eb TT |
1473 | return token->value; |
1474 | } | |
1475 | ||
1476 | return *lexptr++; | |
1477 | } | |
1478 | ||
1479 | /* Lex a number. */ | |
1480 | ||
56ba65a0 TT |
1481 | int |
1482 | rust_parser::lex_number (YYSTYPE *lvalp) | |
c44af4eb TT |
1483 | { |
1484 | regmatch_t subexps[NUM_SUBEXPRESSIONS]; | |
1485 | int match; | |
1486 | int is_integer = 0; | |
1487 | int could_be_decimal = 1; | |
347dc102 | 1488 | int implicit_i32 = 0; |
8001f118 | 1489 | const char *type_name = NULL; |
c44af4eb TT |
1490 | struct type *type; |
1491 | int end_index; | |
1492 | int type_index = -1; | |
8001f118 | 1493 | int i; |
c44af4eb TT |
1494 | |
1495 | match = regexec (&number_regex, lexptr, ARRAY_SIZE (subexps), subexps, 0); | |
1496 | /* Failure means the regexp is broken. */ | |
1497 | gdb_assert (match == 0); | |
1498 | ||
1499 | if (subexps[INT_TEXT].rm_so != -1) | |
1500 | { | |
1501 | /* Integer part matched. */ | |
1502 | is_integer = 1; | |
1503 | end_index = subexps[INT_TEXT].rm_eo; | |
1504 | if (subexps[INT_TYPE].rm_so == -1) | |
347dc102 TT |
1505 | { |
1506 | type_name = "i32"; | |
1507 | implicit_i32 = 1; | |
1508 | } | |
c44af4eb TT |
1509 | else |
1510 | { | |
1511 | type_index = INT_TYPE; | |
1512 | could_be_decimal = 0; | |
1513 | } | |
1514 | } | |
1515 | else if (subexps[FLOAT_TYPE1].rm_so != -1) | |
1516 | { | |
1517 | /* Found floating point type suffix. */ | |
1518 | end_index = subexps[FLOAT_TYPE1].rm_so; | |
1519 | type_index = FLOAT_TYPE1; | |
1520 | } | |
1521 | else if (subexps[FLOAT_TYPE2].rm_so != -1) | |
1522 | { | |
1523 | /* Found floating point type suffix. */ | |
1524 | end_index = subexps[FLOAT_TYPE2].rm_so; | |
1525 | type_index = FLOAT_TYPE2; | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | /* Any other floating point match. */ | |
1530 | end_index = subexps[0].rm_eo; | |
1531 | type_name = "f64"; | |
1532 | } | |
1533 | ||
1534 | /* We need a special case if the final character is ".". In this | |
1535 | case we might need to parse an integer. For example, "23.f()" is | |
1536 | a request for a trait method call, not a syntax error involving | |
1537 | the floating point number "23.". */ | |
1538 | gdb_assert (subexps[0].rm_eo > 0); | |
1539 | if (lexptr[subexps[0].rm_eo - 1] == '.') | |
1540 | { | |
f1735a53 | 1541 | const char *next = skip_spaces (&lexptr[subexps[0].rm_eo]); |
c44af4eb TT |
1542 | |
1543 | if (rust_identifier_start_p (*next) || *next == '.') | |
1544 | { | |
1545 | --subexps[0].rm_eo; | |
1546 | is_integer = 1; | |
1547 | end_index = subexps[0].rm_eo; | |
1548 | type_name = "i32"; | |
1549 | could_be_decimal = 1; | |
347dc102 | 1550 | implicit_i32 = 1; |
c44af4eb TT |
1551 | } |
1552 | } | |
1553 | ||
1554 | /* Compute the type name if we haven't already. */ | |
8001f118 | 1555 | std::string type_name_holder; |
c44af4eb TT |
1556 | if (type_name == NULL) |
1557 | { | |
1558 | gdb_assert (type_index != -1); | |
8001f118 TT |
1559 | type_name_holder = std::string (lexptr + subexps[type_index].rm_so, |
1560 | (subexps[type_index].rm_eo | |
1561 | - subexps[type_index].rm_so)); | |
1562 | type_name = type_name_holder.c_str (); | |
c44af4eb TT |
1563 | } |
1564 | ||
1565 | /* Look up the type. */ | |
56ba65a0 | 1566 | type = get_type (type_name); |
c44af4eb TT |
1567 | |
1568 | /* Copy the text of the number and remove the "_"s. */ | |
8001f118 TT |
1569 | std::string number; |
1570 | for (i = 0; i < end_index && lexptr[i]; ++i) | |
c44af4eb | 1571 | { |
8001f118 | 1572 | if (lexptr[i] == '_') |
c44af4eb TT |
1573 | could_be_decimal = 0; |
1574 | else | |
8001f118 | 1575 | number.push_back (lexptr[i]); |
c44af4eb | 1576 | } |
c44af4eb TT |
1577 | |
1578 | /* Advance past the match. */ | |
1579 | lexptr += subexps[0].rm_eo; | |
1580 | ||
1581 | /* Parse the number. */ | |
1582 | if (is_integer) | |
1583 | { | |
347dc102 | 1584 | uint64_t value; |
c44af4eb | 1585 | int radix = 10; |
8001f118 TT |
1586 | int offset = 0; |
1587 | ||
c44af4eb TT |
1588 | if (number[0] == '0') |
1589 | { | |
1590 | if (number[1] == 'x') | |
1591 | radix = 16; | |
1592 | else if (number[1] == 'o') | |
1593 | radix = 8; | |
1594 | else if (number[1] == 'b') | |
1595 | radix = 2; | |
1596 | if (radix != 10) | |
1597 | { | |
8001f118 | 1598 | offset = 2; |
c44af4eb TT |
1599 | could_be_decimal = 0; |
1600 | } | |
1601 | } | |
347dc102 | 1602 | |
8001f118 | 1603 | value = strtoul (number.c_str () + offset, NULL, radix); |
347dc102 | 1604 | if (implicit_i32 && value >= ((uint64_t) 1) << 31) |
56ba65a0 | 1605 | type = get_type ("i64"); |
347dc102 | 1606 | |
56ba65a0 TT |
1607 | lvalp->typed_val_int.val = value; |
1608 | lvalp->typed_val_int.type = type; | |
c44af4eb TT |
1609 | } |
1610 | else | |
1611 | { | |
56ba65a0 | 1612 | lvalp->typed_val_float.type = type; |
edd079d9 | 1613 | bool parsed = parse_float (number.c_str (), number.length (), |
56ba65a0 TT |
1614 | lvalp->typed_val_float.type, |
1615 | lvalp->typed_val_float.val); | |
edd079d9 | 1616 | gdb_assert (parsed); |
c44af4eb TT |
1617 | } |
1618 | ||
c44af4eb TT |
1619 | return is_integer ? (could_be_decimal ? DECIMAL_INTEGER : INTEGER) : FLOAT; |
1620 | } | |
1621 | ||
1622 | /* The lexer. */ | |
1623 | ||
1624 | static int | |
56ba65a0 | 1625 | rustyylex (YYSTYPE *lvalp, rust_parser *parser) |
c44af4eb TT |
1626 | { |
1627 | /* Skip all leading whitespace. */ | |
1628 | while (lexptr[0] == ' ' || lexptr[0] == '\t' || lexptr[0] == '\r' | |
1629 | || lexptr[0] == '\n') | |
1630 | ++lexptr; | |
1631 | ||
1632 | /* If we hit EOF and we're completing, then return COMPLETE -- maybe | |
1633 | we're completing an empty string at the end of a field_expr. | |
1634 | But, we don't want to return two COMPLETE tokens in a row. */ | |
1635 | if (lexptr[0] == '\0' && lexptr == prev_lexptr) | |
1636 | return 0; | |
1637 | prev_lexptr = lexptr; | |
1638 | if (lexptr[0] == '\0') | |
1639 | { | |
1640 | if (parse_completion) | |
1641 | { | |
56ba65a0 | 1642 | lvalp->sval = make_stoken (""); |
c44af4eb TT |
1643 | return COMPLETE; |
1644 | } | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | if (lexptr[0] >= '0' && lexptr[0] <= '9') | |
56ba65a0 | 1649 | return parser->lex_number (lvalp); |
c44af4eb | 1650 | else if (lexptr[0] == 'b' && lexptr[1] == '\'') |
56ba65a0 | 1651 | return parser->lex_character (lvalp); |
c44af4eb | 1652 | else if (lexptr[0] == 'b' && lexptr[1] == '"') |
56ba65a0 | 1653 | return parser->lex_string (lvalp); |
c44af4eb | 1654 | else if (lexptr[0] == 'b' && starts_raw_string (lexptr + 1)) |
56ba65a0 | 1655 | return parser->lex_string (lvalp); |
c44af4eb | 1656 | else if (starts_raw_string (lexptr)) |
56ba65a0 | 1657 | return parser->lex_string (lvalp); |
c44af4eb | 1658 | else if (rust_identifier_start_p (lexptr[0])) |
56ba65a0 | 1659 | return parser->lex_identifier (lvalp); |
c44af4eb | 1660 | else if (lexptr[0] == '"') |
56ba65a0 | 1661 | return parser->lex_string (lvalp); |
c44af4eb | 1662 | else if (lexptr[0] == '\'') |
56ba65a0 | 1663 | return parser->lex_character (lvalp); |
c44af4eb TT |
1664 | else if (lexptr[0] == '}' || lexptr[0] == ']') |
1665 | { | |
1666 | /* Falls through to lex_operator. */ | |
1667 | --paren_depth; | |
1668 | } | |
1669 | else if (lexptr[0] == '(' || lexptr[0] == '{') | |
1670 | { | |
1671 | /* Falls through to lex_operator. */ | |
1672 | ++paren_depth; | |
1673 | } | |
1674 | else if (lexptr[0] == ',' && comma_terminates && paren_depth == 0) | |
1675 | return 0; | |
1676 | ||
56ba65a0 | 1677 | return lex_operator (lvalp); |
c44af4eb TT |
1678 | } |
1679 | ||
1680 | /* Push back a single character to be re-lexed. */ | |
1681 | ||
1682 | static void | |
1683 | rust_push_back (char c) | |
1684 | { | |
1685 | /* Can't be called before any lexing. */ | |
1686 | gdb_assert (prev_lexptr != NULL); | |
1687 | ||
1688 | --lexptr; | |
1689 | gdb_assert (*lexptr == c); | |
1690 | } | |
1691 | ||
1692 | \f | |
1693 | ||
1694 | /* Make an arbitrary operation and fill in the fields. */ | |
1695 | ||
56ba65a0 TT |
1696 | const struct rust_op * |
1697 | rust_parser::ast_operation (enum exp_opcode opcode, const struct rust_op *left, | |
1698 | const struct rust_op *right) | |
c44af4eb | 1699 | { |
56ba65a0 | 1700 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1701 | |
1702 | result->opcode = opcode; | |
1703 | result->left.op = left; | |
1704 | result->right.op = right; | |
1705 | ||
1706 | return result; | |
1707 | } | |
1708 | ||
1709 | /* Make a compound assignment operation. */ | |
1710 | ||
56ba65a0 TT |
1711 | const struct rust_op * |
1712 | rust_parser::ast_compound_assignment (enum exp_opcode opcode, | |
1713 | const struct rust_op *left, | |
1714 | const struct rust_op *right) | |
c44af4eb | 1715 | { |
56ba65a0 | 1716 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1717 | |
1718 | result->opcode = opcode; | |
1719 | result->compound_assignment = 1; | |
1720 | result->left.op = left; | |
1721 | result->right.op = right; | |
1722 | ||
1723 | return result; | |
1724 | } | |
1725 | ||
1726 | /* Make a typed integer literal operation. */ | |
1727 | ||
56ba65a0 TT |
1728 | const struct rust_op * |
1729 | rust_parser::ast_literal (struct typed_val_int val) | |
c44af4eb | 1730 | { |
56ba65a0 | 1731 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1732 | |
1733 | result->opcode = OP_LONG; | |
1734 | result->left.typed_val_int = val; | |
1735 | ||
1736 | return result; | |
1737 | } | |
1738 | ||
1739 | /* Make a typed floating point literal operation. */ | |
1740 | ||
56ba65a0 TT |
1741 | const struct rust_op * |
1742 | rust_parser::ast_dliteral (struct typed_val_float val) | |
c44af4eb | 1743 | { |
56ba65a0 | 1744 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb | 1745 | |
edd079d9 | 1746 | result->opcode = OP_FLOAT; |
c44af4eb TT |
1747 | result->left.typed_val_float = val; |
1748 | ||
1749 | return result; | |
1750 | } | |
1751 | ||
1752 | /* Make a unary operation. */ | |
1753 | ||
56ba65a0 TT |
1754 | const struct rust_op * |
1755 | rust_parser::ast_unary (enum exp_opcode opcode, const struct rust_op *expr) | |
c44af4eb TT |
1756 | { |
1757 | return ast_operation (opcode, expr, NULL); | |
1758 | } | |
1759 | ||
1760 | /* Make a cast operation. */ | |
1761 | ||
56ba65a0 TT |
1762 | const struct rust_op * |
1763 | rust_parser::ast_cast (const struct rust_op *expr, const struct rust_op *type) | |
c44af4eb | 1764 | { |
56ba65a0 | 1765 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1766 | |
1767 | result->opcode = UNOP_CAST; | |
1768 | result->left.op = expr; | |
1769 | result->right.op = type; | |
1770 | ||
1771 | return result; | |
1772 | } | |
1773 | ||
1774 | /* Make a call-like operation. This is nominally a function call, but | |
1775 | when lowering we may discover that it actually represents the | |
1776 | creation of a tuple struct. */ | |
1777 | ||
56ba65a0 TT |
1778 | const struct rust_op * |
1779 | rust_parser::ast_call_ish (enum exp_opcode opcode, const struct rust_op *expr, | |
1780 | rust_op_vector *params) | |
c44af4eb | 1781 | { |
56ba65a0 | 1782 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1783 | |
1784 | result->opcode = opcode; | |
1785 | result->left.op = expr; | |
1786 | result->right.params = params; | |
1787 | ||
1788 | return result; | |
1789 | } | |
1790 | ||
1791 | /* Make a structure creation operation. */ | |
1792 | ||
56ba65a0 TT |
1793 | const struct rust_op * |
1794 | rust_parser::ast_struct (const struct rust_op *name, rust_set_vector *fields) | |
c44af4eb | 1795 | { |
56ba65a0 | 1796 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1797 | |
1798 | result->opcode = OP_AGGREGATE; | |
1799 | result->left.op = name; | |
1800 | result->right.field_inits = fields; | |
1801 | ||
1802 | return result; | |
1803 | } | |
1804 | ||
1805 | /* Make an identifier path. */ | |
1806 | ||
56ba65a0 TT |
1807 | const struct rust_op * |
1808 | rust_parser::ast_path (struct stoken path, rust_op_vector *params) | |
c44af4eb | 1809 | { |
56ba65a0 | 1810 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1811 | |
1812 | result->opcode = OP_VAR_VALUE; | |
1813 | result->left.sval = path; | |
1814 | result->right.params = params; | |
1815 | ||
1816 | return result; | |
1817 | } | |
1818 | ||
1819 | /* Make a string constant operation. */ | |
1820 | ||
56ba65a0 TT |
1821 | const struct rust_op * |
1822 | rust_parser::ast_string (struct stoken str) | |
c44af4eb | 1823 | { |
56ba65a0 | 1824 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1825 | |
1826 | result->opcode = OP_STRING; | |
1827 | result->left.sval = str; | |
1828 | ||
1829 | return result; | |
1830 | } | |
1831 | ||
1832 | /* Make a field expression. */ | |
1833 | ||
56ba65a0 TT |
1834 | const struct rust_op * |
1835 | rust_parser::ast_structop (const struct rust_op *left, const char *name, | |
1836 | int completing) | |
c44af4eb | 1837 | { |
56ba65a0 | 1838 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1839 | |
1840 | result->opcode = STRUCTOP_STRUCT; | |
1841 | result->completing = completing; | |
1842 | result->left.op = left; | |
1843 | result->right.sval = make_stoken (name); | |
1844 | ||
1845 | return result; | |
1846 | } | |
1847 | ||
1848 | /* Make an anonymous struct operation, like 'x.0'. */ | |
1849 | ||
56ba65a0 TT |
1850 | const struct rust_op * |
1851 | rust_parser::ast_structop_anonymous (const struct rust_op *left, | |
1852 | struct typed_val_int number) | |
c44af4eb | 1853 | { |
56ba65a0 | 1854 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1855 | |
1856 | result->opcode = STRUCTOP_ANONYMOUS; | |
1857 | result->left.op = left; | |
1858 | result->right.typed_val_int = number; | |
1859 | ||
1860 | return result; | |
1861 | } | |
1862 | ||
1863 | /* Make a range operation. */ | |
1864 | ||
56ba65a0 TT |
1865 | const struct rust_op * |
1866 | rust_parser::ast_range (const struct rust_op *lhs, const struct rust_op *rhs, | |
1867 | bool inclusive) | |
c44af4eb | 1868 | { |
56ba65a0 | 1869 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb | 1870 | |
01739a3b | 1871 | result->opcode = OP_RANGE; |
6873858b | 1872 | result->inclusive = inclusive; |
c44af4eb TT |
1873 | result->left.op = lhs; |
1874 | result->right.op = rhs; | |
1875 | ||
1876 | return result; | |
1877 | } | |
1878 | ||
1879 | /* A helper function to make a type-related AST node. */ | |
1880 | ||
56ba65a0 TT |
1881 | struct rust_op * |
1882 | rust_parser::ast_basic_type (enum type_code typecode) | |
c44af4eb | 1883 | { |
56ba65a0 | 1884 | struct rust_op *result = OBSTACK_ZALLOC (&obstack, struct rust_op); |
c44af4eb TT |
1885 | |
1886 | result->opcode = OP_TYPE; | |
1887 | result->typecode = typecode; | |
1888 | return result; | |
1889 | } | |
1890 | ||
1891 | /* Create an AST node describing an array type. */ | |
1892 | ||
56ba65a0 TT |
1893 | const struct rust_op * |
1894 | rust_parser::ast_array_type (const struct rust_op *lhs, | |
1895 | struct typed_val_int val) | |
c44af4eb TT |
1896 | { |
1897 | struct rust_op *result = ast_basic_type (TYPE_CODE_ARRAY); | |
1898 | ||
1899 | result->left.op = lhs; | |
1900 | result->right.typed_val_int = val; | |
1901 | return result; | |
1902 | } | |
1903 | ||
1904 | /* Create an AST node describing a reference type. */ | |
1905 | ||
56ba65a0 TT |
1906 | const struct rust_op * |
1907 | rust_parser::ast_slice_type (const struct rust_op *type) | |
c44af4eb TT |
1908 | { |
1909 | /* Use TYPE_CODE_COMPLEX just because it is handy. */ | |
1910 | struct rust_op *result = ast_basic_type (TYPE_CODE_COMPLEX); | |
1911 | ||
1912 | result->left.op = type; | |
1913 | return result; | |
1914 | } | |
1915 | ||
1916 | /* Create an AST node describing a reference type. */ | |
1917 | ||
56ba65a0 TT |
1918 | const struct rust_op * |
1919 | rust_parser::ast_reference_type (const struct rust_op *type) | |
c44af4eb TT |
1920 | { |
1921 | struct rust_op *result = ast_basic_type (TYPE_CODE_REF); | |
1922 | ||
1923 | result->left.op = type; | |
1924 | return result; | |
1925 | } | |
1926 | ||
1927 | /* Create an AST node describing a pointer type. */ | |
1928 | ||
56ba65a0 TT |
1929 | const struct rust_op * |
1930 | rust_parser::ast_pointer_type (const struct rust_op *type, int is_mut) | |
c44af4eb TT |
1931 | { |
1932 | struct rust_op *result = ast_basic_type (TYPE_CODE_PTR); | |
1933 | ||
1934 | result->left.op = type; | |
1935 | /* For the time being we ignore is_mut. */ | |
1936 | return result; | |
1937 | } | |
1938 | ||
1939 | /* Create an AST node describing a function type. */ | |
1940 | ||
56ba65a0 TT |
1941 | const struct rust_op * |
1942 | rust_parser::ast_function_type (const struct rust_op *rtype, | |
1943 | rust_op_vector *params) | |
c44af4eb TT |
1944 | { |
1945 | struct rust_op *result = ast_basic_type (TYPE_CODE_FUNC); | |
1946 | ||
1947 | result->left.op = rtype; | |
1948 | result->right.params = params; | |
1949 | return result; | |
1950 | } | |
1951 | ||
1952 | /* Create an AST node describing a tuple type. */ | |
1953 | ||
56ba65a0 TT |
1954 | const struct rust_op * |
1955 | rust_parser::ast_tuple_type (rust_op_vector *params) | |
c44af4eb TT |
1956 | { |
1957 | struct rust_op *result = ast_basic_type (TYPE_CODE_STRUCT); | |
1958 | ||
1959 | result->left.params = params; | |
1960 | return result; | |
1961 | } | |
1962 | ||
1963 | /* A helper to appropriately munge NAME and BLOCK depending on the | |
1964 | presence of a leading "::". */ | |
1965 | ||
1966 | static void | |
1967 | munge_name_and_block (const char **name, const struct block **block) | |
1968 | { | |
1969 | /* If it is a global reference, skip the current block in favor of | |
1970 | the static block. */ | |
1971 | if (strncmp (*name, "::", 2) == 0) | |
1972 | { | |
1973 | *name += 2; | |
1974 | *block = block_static_block (*block); | |
1975 | } | |
1976 | } | |
1977 | ||
1978 | /* Like lookup_symbol, but handles Rust namespace conventions, and | |
1979 | doesn't require field_of_this_result. */ | |
1980 | ||
1981 | static struct block_symbol | |
1982 | rust_lookup_symbol (const char *name, const struct block *block, | |
1983 | const domain_enum domain) | |
1984 | { | |
1985 | struct block_symbol result; | |
1986 | ||
1987 | munge_name_and_block (&name, &block); | |
1988 | ||
1989 | result = lookup_symbol (name, block, domain, NULL); | |
1990 | if (result.symbol != NULL) | |
1991 | update_innermost_block (result); | |
1992 | return result; | |
1993 | } | |
1994 | ||
1995 | /* Look up a type, following Rust namespace conventions. */ | |
1996 | ||
56ba65a0 TT |
1997 | struct type * |
1998 | rust_parser::rust_lookup_type (const char *name, const struct block *block) | |
c44af4eb TT |
1999 | { |
2000 | struct block_symbol result; | |
2001 | struct type *type; | |
2002 | ||
2003 | munge_name_and_block (&name, &block); | |
2004 | ||
2005 | result = lookup_symbol (name, block, STRUCT_DOMAIN, NULL); | |
2006 | if (result.symbol != NULL) | |
2007 | { | |
2008 | update_innermost_block (result); | |
2009 | return SYMBOL_TYPE (result.symbol); | |
2010 | } | |
2011 | ||
56ba65a0 | 2012 | type = lookup_typename (language (), arch (), name, NULL, 1); |
c44af4eb TT |
2013 | if (type != NULL) |
2014 | return type; | |
2015 | ||
2016 | /* Last chance, try a built-in type. */ | |
56ba65a0 | 2017 | return language_lookup_primitive_type (language (), arch (), name); |
c44af4eb TT |
2018 | } |
2019 | ||
c44af4eb TT |
2020 | /* Convert a vector of rust_ops representing types to a vector of |
2021 | types. */ | |
2022 | ||
56ba65a0 TT |
2023 | std::vector<struct type *> |
2024 | rust_parser::convert_params_to_types (rust_op_vector *params) | |
c44af4eb | 2025 | { |
8001f118 | 2026 | std::vector<struct type *> result; |
c44af4eb | 2027 | |
1632f8ba DR |
2028 | if (params != nullptr) |
2029 | { | |
2030 | for (const rust_op *op : *params) | |
56ba65a0 | 2031 | result.push_back (convert_ast_to_type (op)); |
1632f8ba | 2032 | } |
c44af4eb | 2033 | |
c44af4eb TT |
2034 | return result; |
2035 | } | |
2036 | ||
2037 | /* Convert a rust_op representing a type to a struct type *. */ | |
2038 | ||
56ba65a0 TT |
2039 | struct type * |
2040 | rust_parser::convert_ast_to_type (const struct rust_op *operation) | |
c44af4eb TT |
2041 | { |
2042 | struct type *type, *result = NULL; | |
2043 | ||
2044 | if (operation->opcode == OP_VAR_VALUE) | |
2045 | { | |
56ba65a0 | 2046 | const char *varname = convert_name (operation); |
c44af4eb TT |
2047 | |
2048 | result = rust_lookup_type (varname, expression_context_block); | |
2049 | if (result == NULL) | |
2050 | error (_("No typed name '%s' in current context"), varname); | |
2051 | return result; | |
2052 | } | |
2053 | ||
2054 | gdb_assert (operation->opcode == OP_TYPE); | |
2055 | ||
2056 | switch (operation->typecode) | |
2057 | { | |
2058 | case TYPE_CODE_ARRAY: | |
56ba65a0 | 2059 | type = convert_ast_to_type (operation->left.op); |
c44af4eb TT |
2060 | if (operation->right.typed_val_int.val < 0) |
2061 | error (_("Negative array length")); | |
2062 | result = lookup_array_range_type (type, 0, | |
2063 | operation->right.typed_val_int.val - 1); | |
2064 | break; | |
2065 | ||
2066 | case TYPE_CODE_COMPLEX: | |
2067 | { | |
56ba65a0 | 2068 | struct type *usize = get_type ("usize"); |
c44af4eb | 2069 | |
56ba65a0 | 2070 | type = convert_ast_to_type (operation->left.op); |
c44af4eb TT |
2071 | result = rust_slice_type ("&[*gdb*]", type, usize); |
2072 | } | |
2073 | break; | |
2074 | ||
2075 | case TYPE_CODE_REF: | |
2076 | case TYPE_CODE_PTR: | |
2077 | /* For now we treat &x and *x identically. */ | |
56ba65a0 | 2078 | type = convert_ast_to_type (operation->left.op); |
c44af4eb TT |
2079 | result = lookup_pointer_type (type); |
2080 | break; | |
2081 | ||
2082 | case TYPE_CODE_FUNC: | |
2083 | { | |
8001f118 | 2084 | std::vector<struct type *> args |
56ba65a0 | 2085 | (convert_params_to_types (operation->right.params)); |
c44af4eb TT |
2086 | struct type **argtypes = NULL; |
2087 | ||
56ba65a0 | 2088 | type = convert_ast_to_type (operation->left.op); |
8001f118 TT |
2089 | if (!args.empty ()) |
2090 | argtypes = args.data (); | |
c44af4eb TT |
2091 | |
2092 | result | |
8001f118 | 2093 | = lookup_function_type_with_arguments (type, args.size (), |
c44af4eb TT |
2094 | argtypes); |
2095 | result = lookup_pointer_type (result); | |
c44af4eb TT |
2096 | } |
2097 | break; | |
2098 | ||
2099 | case TYPE_CODE_STRUCT: | |
2100 | { | |
8001f118 | 2101 | std::vector<struct type *> args |
56ba65a0 | 2102 | (convert_params_to_types (operation->left.params)); |
c44af4eb | 2103 | int i; |
c44af4eb TT |
2104 | const char *name; |
2105 | ||
56ba65a0 | 2106 | obstack_1grow (&obstack, '('); |
8001f118 | 2107 | for (i = 0; i < args.size (); ++i) |
c44af4eb | 2108 | { |
8001f118 | 2109 | std::string type_name = type_to_string (args[i]); |
c44af4eb TT |
2110 | |
2111 | if (i > 0) | |
56ba65a0 TT |
2112 | obstack_1grow (&obstack, ','); |
2113 | obstack_grow_str (&obstack, type_name.c_str ()); | |
c44af4eb TT |
2114 | } |
2115 | ||
56ba65a0 TT |
2116 | obstack_grow_str0 (&obstack, ")"); |
2117 | name = (const char *) obstack_finish (&obstack); | |
c44af4eb TT |
2118 | |
2119 | /* We don't allow creating new tuple types (yet), but we do | |
2120 | allow looking up existing tuple types. */ | |
2121 | result = rust_lookup_type (name, expression_context_block); | |
2122 | if (result == NULL) | |
2123 | error (_("could not find tuple type '%s'"), name); | |
c44af4eb TT |
2124 | } |
2125 | break; | |
2126 | ||
2127 | default: | |
2128 | gdb_assert_not_reached ("unhandled opcode in convert_ast_to_type"); | |
2129 | } | |
2130 | ||
2131 | gdb_assert (result != NULL); | |
2132 | return result; | |
2133 | } | |
2134 | ||
2135 | /* A helper function to turn a rust_op representing a name into a full | |
2136 | name. This applies generic arguments as needed. The returned name | |
2137 | is allocated on the work obstack. */ | |
2138 | ||
56ba65a0 TT |
2139 | const char * |
2140 | rust_parser::convert_name (const struct rust_op *operation) | |
c44af4eb | 2141 | { |
c44af4eb | 2142 | int i; |
c44af4eb TT |
2143 | |
2144 | gdb_assert (operation->opcode == OP_VAR_VALUE); | |
2145 | ||
2146 | if (operation->right.params == NULL) | |
2147 | return operation->left.sval.ptr; | |
2148 | ||
8001f118 | 2149 | std::vector<struct type *> types |
56ba65a0 | 2150 | (convert_params_to_types (operation->right.params)); |
c44af4eb | 2151 | |
56ba65a0 TT |
2152 | obstack_grow_str (&obstack, operation->left.sval.ptr); |
2153 | obstack_1grow (&obstack, '<'); | |
8001f118 | 2154 | for (i = 0; i < types.size (); ++i) |
c44af4eb | 2155 | { |
8001f118 | 2156 | std::string type_name = type_to_string (types[i]); |
c44af4eb TT |
2157 | |
2158 | if (i > 0) | |
56ba65a0 | 2159 | obstack_1grow (&obstack, ','); |
c44af4eb | 2160 | |
56ba65a0 | 2161 | obstack_grow_str (&obstack, type_name.c_str ()); |
c44af4eb | 2162 | } |
56ba65a0 | 2163 | obstack_grow_str0 (&obstack, ">"); |
c44af4eb | 2164 | |
56ba65a0 | 2165 | return (const char *) obstack_finish (&obstack); |
c44af4eb TT |
2166 | } |
2167 | ||
c44af4eb TT |
2168 | /* A helper function that converts a vec of rust_ops to a gdb |
2169 | expression. */ | |
2170 | ||
56ba65a0 TT |
2171 | void |
2172 | rust_parser::convert_params_to_expression (rust_op_vector *params, | |
2173 | const struct rust_op *top) | |
c44af4eb | 2174 | { |
3232fabd | 2175 | for (const rust_op *elem : *params) |
56ba65a0 | 2176 | convert_ast_to_expression (elem, top); |
c44af4eb TT |
2177 | } |
2178 | ||
2179 | /* Lower a rust_op to a gdb expression. STATE is the parser state. | |
2180 | OPERATION is the operation to lower. TOP is a pointer to the | |
2181 | top-most operation; it is used to handle the special case where the | |
2182 | top-most expression is an identifier and can be optionally lowered | |
8880f2a9 TT |
2183 | to OP_TYPE. WANT_TYPE is a flag indicating that, if the expression |
2184 | is the name of a type, then emit an OP_TYPE for it (rather than | |
2185 | erroring). If WANT_TYPE is set, then the similar TOP handling is | |
2186 | not done. */ | |
c44af4eb | 2187 | |
56ba65a0 TT |
2188 | void |
2189 | rust_parser::convert_ast_to_expression (const struct rust_op *operation, | |
2190 | const struct rust_op *top, | |
2191 | bool want_type) | |
c44af4eb TT |
2192 | { |
2193 | switch (operation->opcode) | |
2194 | { | |
2195 | case OP_LONG: | |
56ba65a0 TT |
2196 | write_exp_elt_opcode (pstate, OP_LONG); |
2197 | write_exp_elt_type (pstate, operation->left.typed_val_int.type); | |
2198 | write_exp_elt_longcst (pstate, operation->left.typed_val_int.val); | |
2199 | write_exp_elt_opcode (pstate, OP_LONG); | |
c44af4eb TT |
2200 | break; |
2201 | ||
edd079d9 | 2202 | case OP_FLOAT: |
56ba65a0 TT |
2203 | write_exp_elt_opcode (pstate, OP_FLOAT); |
2204 | write_exp_elt_type (pstate, operation->left.typed_val_float.type); | |
2205 | write_exp_elt_floatcst (pstate, operation->left.typed_val_float.val); | |
2206 | write_exp_elt_opcode (pstate, OP_FLOAT); | |
c44af4eb TT |
2207 | break; |
2208 | ||
2209 | case STRUCTOP_STRUCT: | |
2210 | { | |
56ba65a0 | 2211 | convert_ast_to_expression (operation->left.op, top); |
c44af4eb TT |
2212 | |
2213 | if (operation->completing) | |
56ba65a0 TT |
2214 | mark_struct_expression (pstate); |
2215 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
2216 | write_exp_string (pstate, operation->right.sval); | |
2217 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
c44af4eb TT |
2218 | } |
2219 | break; | |
2220 | ||
2221 | case STRUCTOP_ANONYMOUS: | |
2222 | { | |
56ba65a0 | 2223 | convert_ast_to_expression (operation->left.op, top); |
c44af4eb | 2224 | |
56ba65a0 TT |
2225 | write_exp_elt_opcode (pstate, STRUCTOP_ANONYMOUS); |
2226 | write_exp_elt_longcst (pstate, operation->right.typed_val_int.val); | |
2227 | write_exp_elt_opcode (pstate, STRUCTOP_ANONYMOUS); | |
c44af4eb TT |
2228 | } |
2229 | break; | |
2230 | ||
8880f2a9 | 2231 | case UNOP_SIZEOF: |
56ba65a0 TT |
2232 | convert_ast_to_expression (operation->left.op, top, true); |
2233 | write_exp_elt_opcode (pstate, UNOP_SIZEOF); | |
8880f2a9 TT |
2234 | break; |
2235 | ||
c44af4eb TT |
2236 | case UNOP_PLUS: |
2237 | case UNOP_NEG: | |
2238 | case UNOP_COMPLEMENT: | |
2239 | case UNOP_IND: | |
2240 | case UNOP_ADDR: | |
56ba65a0 TT |
2241 | convert_ast_to_expression (operation->left.op, top); |
2242 | write_exp_elt_opcode (pstate, operation->opcode); | |
c44af4eb TT |
2243 | break; |
2244 | ||
2245 | case BINOP_SUBSCRIPT: | |
2246 | case BINOP_MUL: | |
2247 | case BINOP_REPEAT: | |
2248 | case BINOP_DIV: | |
2249 | case BINOP_REM: | |
2250 | case BINOP_LESS: | |
2251 | case BINOP_GTR: | |
2252 | case BINOP_BITWISE_AND: | |
2253 | case BINOP_BITWISE_IOR: | |
2254 | case BINOP_BITWISE_XOR: | |
2255 | case BINOP_ADD: | |
2256 | case BINOP_SUB: | |
2257 | case BINOP_LOGICAL_OR: | |
2258 | case BINOP_LOGICAL_AND: | |
2259 | case BINOP_EQUAL: | |
2260 | case BINOP_NOTEQUAL: | |
2261 | case BINOP_LEQ: | |
2262 | case BINOP_GEQ: | |
2263 | case BINOP_LSH: | |
2264 | case BINOP_RSH: | |
2265 | case BINOP_ASSIGN: | |
2266 | case OP_RUST_ARRAY: | |
56ba65a0 TT |
2267 | convert_ast_to_expression (operation->left.op, top); |
2268 | convert_ast_to_expression (operation->right.op, top); | |
c44af4eb TT |
2269 | if (operation->compound_assignment) |
2270 | { | |
56ba65a0 TT |
2271 | write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY); |
2272 | write_exp_elt_opcode (pstate, operation->opcode); | |
2273 | write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY); | |
c44af4eb TT |
2274 | } |
2275 | else | |
56ba65a0 | 2276 | write_exp_elt_opcode (pstate, operation->opcode); |
c44af4eb TT |
2277 | |
2278 | if (operation->compound_assignment | |
2279 | || operation->opcode == BINOP_ASSIGN) | |
2280 | { | |
2281 | struct type *type; | |
2282 | ||
56ba65a0 TT |
2283 | type = language_lookup_primitive_type (parse_language (pstate), |
2284 | parse_gdbarch (pstate), | |
c44af4eb TT |
2285 | "()"); |
2286 | ||
56ba65a0 TT |
2287 | write_exp_elt_opcode (pstate, OP_LONG); |
2288 | write_exp_elt_type (pstate, type); | |
2289 | write_exp_elt_longcst (pstate, 0); | |
2290 | write_exp_elt_opcode (pstate, OP_LONG); | |
c44af4eb | 2291 | |
56ba65a0 | 2292 | write_exp_elt_opcode (pstate, BINOP_COMMA); |
c44af4eb TT |
2293 | } |
2294 | break; | |
2295 | ||
2296 | case UNOP_CAST: | |
2297 | { | |
56ba65a0 | 2298 | struct type *type = convert_ast_to_type (operation->right.op); |
c44af4eb | 2299 | |
56ba65a0 TT |
2300 | convert_ast_to_expression (operation->left.op, top); |
2301 | write_exp_elt_opcode (pstate, UNOP_CAST); | |
2302 | write_exp_elt_type (pstate, type); | |
2303 | write_exp_elt_opcode (pstate, UNOP_CAST); | |
c44af4eb TT |
2304 | } |
2305 | break; | |
2306 | ||
2307 | case OP_FUNCALL: | |
2308 | { | |
2309 | if (operation->left.op->opcode == OP_VAR_VALUE) | |
2310 | { | |
2311 | struct type *type; | |
56ba65a0 | 2312 | const char *varname = convert_name (operation->left.op); |
c44af4eb TT |
2313 | |
2314 | type = rust_lookup_type (varname, expression_context_block); | |
2315 | if (type != NULL) | |
2316 | { | |
2317 | /* This is actually a tuple struct expression, not a | |
2318 | call expression. */ | |
3232fabd | 2319 | rust_op_vector *params = operation->right.params; |
c44af4eb TT |
2320 | |
2321 | if (TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
2322 | { | |
2323 | if (!rust_tuple_struct_type_p (type)) | |
2324 | error (_("Type %s is not a tuple struct"), varname); | |
2325 | ||
3232fabd | 2326 | for (int i = 0; i < params->size (); ++i) |
c44af4eb TT |
2327 | { |
2328 | char *cell = get_print_cell (); | |
2329 | ||
2330 | xsnprintf (cell, PRINT_CELL_SIZE, "__%d", i); | |
56ba65a0 TT |
2331 | write_exp_elt_opcode (pstate, OP_NAME); |
2332 | write_exp_string (pstate, make_stoken (cell)); | |
2333 | write_exp_elt_opcode (pstate, OP_NAME); | |
c44af4eb | 2334 | |
56ba65a0 | 2335 | convert_ast_to_expression ((*params)[i], top); |
c44af4eb TT |
2336 | } |
2337 | ||
56ba65a0 TT |
2338 | write_exp_elt_opcode (pstate, OP_AGGREGATE); |
2339 | write_exp_elt_type (pstate, type); | |
2340 | write_exp_elt_longcst (pstate, 2 * params->size ()); | |
2341 | write_exp_elt_opcode (pstate, OP_AGGREGATE); | |
c44af4eb TT |
2342 | break; |
2343 | } | |
2344 | } | |
2345 | } | |
56ba65a0 TT |
2346 | convert_ast_to_expression (operation->left.op, top); |
2347 | convert_params_to_expression (operation->right.params, top); | |
2348 | write_exp_elt_opcode (pstate, OP_FUNCALL); | |
2349 | write_exp_elt_longcst (pstate, operation->right.params->size ()); | |
2350 | write_exp_elt_longcst (pstate, OP_FUNCALL); | |
c44af4eb TT |
2351 | } |
2352 | break; | |
2353 | ||
2354 | case OP_ARRAY: | |
2355 | gdb_assert (operation->left.op == NULL); | |
56ba65a0 TT |
2356 | convert_params_to_expression (operation->right.params, top); |
2357 | write_exp_elt_opcode (pstate, OP_ARRAY); | |
2358 | write_exp_elt_longcst (pstate, 0); | |
2359 | write_exp_elt_longcst (pstate, operation->right.params->size () - 1); | |
2360 | write_exp_elt_longcst (pstate, OP_ARRAY); | |
c44af4eb TT |
2361 | break; |
2362 | ||
2363 | case OP_VAR_VALUE: | |
2364 | { | |
2365 | struct block_symbol sym; | |
2366 | const char *varname; | |
2367 | ||
2368 | if (operation->left.sval.ptr[0] == '$') | |
2369 | { | |
56ba65a0 | 2370 | write_dollar_variable (pstate, operation->left.sval); |
c44af4eb TT |
2371 | break; |
2372 | } | |
2373 | ||
56ba65a0 | 2374 | varname = convert_name (operation); |
c44af4eb TT |
2375 | sym = rust_lookup_symbol (varname, expression_context_block, |
2376 | VAR_DOMAIN); | |
65547233 | 2377 | if (sym.symbol != NULL && SYMBOL_CLASS (sym.symbol) != LOC_TYPEDEF) |
c44af4eb | 2378 | { |
56ba65a0 TT |
2379 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
2380 | write_exp_elt_block (pstate, sym.block); | |
2381 | write_exp_elt_sym (pstate, sym.symbol); | |
2382 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); | |
c44af4eb TT |
2383 | } |
2384 | else | |
2385 | { | |
65547233 | 2386 | struct type *type = NULL; |
c44af4eb | 2387 | |
65547233 TT |
2388 | if (sym.symbol != NULL) |
2389 | { | |
2390 | gdb_assert (SYMBOL_CLASS (sym.symbol) == LOC_TYPEDEF); | |
2391 | type = SYMBOL_TYPE (sym.symbol); | |
2392 | } | |
2393 | if (type == NULL) | |
2394 | type = rust_lookup_type (varname, expression_context_block); | |
c44af4eb TT |
2395 | if (type == NULL) |
2396 | error (_("No symbol '%s' in current context"), varname); | |
2397 | ||
8880f2a9 TT |
2398 | if (!want_type |
2399 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
c44af4eb TT |
2400 | && TYPE_NFIELDS (type) == 0) |
2401 | { | |
2402 | /* A unit-like struct. */ | |
56ba65a0 TT |
2403 | write_exp_elt_opcode (pstate, OP_AGGREGATE); |
2404 | write_exp_elt_type (pstate, type); | |
2405 | write_exp_elt_longcst (pstate, 0); | |
2406 | write_exp_elt_opcode (pstate, OP_AGGREGATE); | |
c44af4eb | 2407 | } |
8880f2a9 | 2408 | else if (want_type || operation == top) |
c44af4eb | 2409 | { |
56ba65a0 TT |
2410 | write_exp_elt_opcode (pstate, OP_TYPE); |
2411 | write_exp_elt_type (pstate, type); | |
2412 | write_exp_elt_opcode (pstate, OP_TYPE); | |
c44af4eb | 2413 | } |
8880f2a9 TT |
2414 | else |
2415 | error (_("Found type '%s', which can't be " | |
2416 | "evaluated in this context"), | |
2417 | varname); | |
c44af4eb TT |
2418 | } |
2419 | } | |
2420 | break; | |
2421 | ||
2422 | case OP_AGGREGATE: | |
2423 | { | |
c44af4eb | 2424 | int length; |
3232fabd | 2425 | rust_set_vector *fields = operation->right.field_inits; |
c44af4eb TT |
2426 | struct type *type; |
2427 | const char *name; | |
2428 | ||
2429 | length = 0; | |
3232fabd | 2430 | for (const set_field &init : *fields) |
c44af4eb | 2431 | { |
3232fabd | 2432 | if (init.name.ptr != NULL) |
c44af4eb | 2433 | { |
56ba65a0 TT |
2434 | write_exp_elt_opcode (pstate, OP_NAME); |
2435 | write_exp_string (pstate, init.name); | |
2436 | write_exp_elt_opcode (pstate, OP_NAME); | |
c44af4eb TT |
2437 | ++length; |
2438 | } | |
2439 | ||
56ba65a0 | 2440 | convert_ast_to_expression (init.init, top); |
c44af4eb TT |
2441 | ++length; |
2442 | ||
3232fabd | 2443 | if (init.name.ptr == NULL) |
c44af4eb TT |
2444 | { |
2445 | /* This is handled differently from Ada in our | |
2446 | evaluator. */ | |
56ba65a0 | 2447 | write_exp_elt_opcode (pstate, OP_OTHERS); |
c44af4eb TT |
2448 | } |
2449 | } | |
2450 | ||
56ba65a0 | 2451 | name = convert_name (operation->left.op); |
c44af4eb TT |
2452 | type = rust_lookup_type (name, expression_context_block); |
2453 | if (type == NULL) | |
2454 | error (_("Could not find type '%s'"), operation->left.sval.ptr); | |
2455 | ||
2456 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT | |
2457 | || rust_tuple_type_p (type) | |
2458 | || rust_tuple_struct_type_p (type)) | |
2459 | error (_("Struct expression applied to non-struct type")); | |
2460 | ||
56ba65a0 TT |
2461 | write_exp_elt_opcode (pstate, OP_AGGREGATE); |
2462 | write_exp_elt_type (pstate, type); | |
2463 | write_exp_elt_longcst (pstate, length); | |
2464 | write_exp_elt_opcode (pstate, OP_AGGREGATE); | |
c44af4eb TT |
2465 | } |
2466 | break; | |
2467 | ||
2468 | case OP_STRING: | |
2469 | { | |
56ba65a0 TT |
2470 | write_exp_elt_opcode (pstate, OP_STRING); |
2471 | write_exp_string (pstate, operation->left.sval); | |
2472 | write_exp_elt_opcode (pstate, OP_STRING); | |
c44af4eb TT |
2473 | } |
2474 | break; | |
2475 | ||
01739a3b | 2476 | case OP_RANGE: |
c44af4eb | 2477 | { |
01739a3b | 2478 | enum range_type kind = BOTH_BOUND_DEFAULT; |
c44af4eb TT |
2479 | |
2480 | if (operation->left.op != NULL) | |
2481 | { | |
56ba65a0 | 2482 | convert_ast_to_expression (operation->left.op, top); |
c44af4eb TT |
2483 | kind = HIGH_BOUND_DEFAULT; |
2484 | } | |
2485 | if (operation->right.op != NULL) | |
2486 | { | |
56ba65a0 | 2487 | convert_ast_to_expression (operation->right.op, top); |
c44af4eb | 2488 | if (kind == BOTH_BOUND_DEFAULT) |
6873858b TT |
2489 | kind = (operation->inclusive |
2490 | ? LOW_BOUND_DEFAULT : LOW_BOUND_DEFAULT_EXCLUSIVE); | |
c44af4eb TT |
2491 | else |
2492 | { | |
2493 | gdb_assert (kind == HIGH_BOUND_DEFAULT); | |
6873858b TT |
2494 | kind = (operation->inclusive |
2495 | ? NONE_BOUND_DEFAULT : NONE_BOUND_DEFAULT_EXCLUSIVE); | |
c44af4eb TT |
2496 | } |
2497 | } | |
6873858b TT |
2498 | else |
2499 | { | |
2500 | /* Nothing should make an inclusive range without an upper | |
2501 | bound. */ | |
2502 | gdb_assert (!operation->inclusive); | |
2503 | } | |
2504 | ||
56ba65a0 TT |
2505 | write_exp_elt_opcode (pstate, OP_RANGE); |
2506 | write_exp_elt_longcst (pstate, kind); | |
2507 | write_exp_elt_opcode (pstate, OP_RANGE); | |
c44af4eb TT |
2508 | } |
2509 | break; | |
2510 | ||
2511 | default: | |
2512 | gdb_assert_not_reached ("unhandled opcode in convert_ast_to_expression"); | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | \f | |
2517 | ||
2518 | /* The parser as exposed to gdb. */ | |
2519 | ||
2520 | int | |
2521 | rust_parse (struct parser_state *state) | |
2522 | { | |
2523 | int result; | |
c44af4eb | 2524 | |
3232fabd TT |
2525 | /* This sets various globals and also clears them on |
2526 | destruction. */ | |
2527 | rust_parser parser (state); | |
8268c778 | 2528 | |
56ba65a0 | 2529 | result = rustyyparse (&parser); |
c44af4eb | 2530 | |
3232fabd | 2531 | if (!result || (parse_completion && parser.rust_ast != NULL)) |
56ba65a0 | 2532 | parser.convert_ast_to_expression (parser.rust_ast, parser.rust_ast); |
c44af4eb | 2533 | |
c44af4eb TT |
2534 | return result; |
2535 | } | |
2536 | ||
2537 | /* The parser error handler. */ | |
2538 | ||
69d340c6 | 2539 | static void |
56ba65a0 | 2540 | rustyyerror (rust_parser *parser, const char *msg) |
c44af4eb TT |
2541 | { |
2542 | const char *where = prev_lexptr ? prev_lexptr : lexptr; | |
69d340c6 | 2543 | error (_("%s in expression, near `%s'."), msg, where); |
c44af4eb TT |
2544 | } |
2545 | ||
2546 | \f | |
2547 | ||
2548 | #if GDB_SELF_TEST | |
2549 | ||
2550 | /* Initialize the lexer for testing. */ | |
2551 | ||
2552 | static void | |
2553 | rust_lex_test_init (const char *input) | |
2554 | { | |
2555 | prev_lexptr = NULL; | |
2556 | lexptr = input; | |
2557 | paren_depth = 0; | |
2558 | } | |
2559 | ||
2560 | /* A test helper that lexes a string, expecting a single token. It | |
2561 | returns the lexer data for this token. */ | |
2562 | ||
2563 | static RUSTSTYPE | |
56ba65a0 | 2564 | rust_lex_test_one (rust_parser *parser, const char *input, int expected) |
c44af4eb TT |
2565 | { |
2566 | int token; | |
2567 | RUSTSTYPE result; | |
2568 | ||
2569 | rust_lex_test_init (input); | |
2570 | ||
56ba65a0 | 2571 | token = rustyylex (&result, parser); |
c44af4eb | 2572 | SELF_CHECK (token == expected); |
c44af4eb TT |
2573 | |
2574 | if (token) | |
2575 | { | |
56ba65a0 TT |
2576 | RUSTSTYPE ignore; |
2577 | token = rustyylex (&ignore, parser); | |
c44af4eb TT |
2578 | SELF_CHECK (token == 0); |
2579 | } | |
2580 | ||
2581 | return result; | |
2582 | } | |
2583 | ||
2584 | /* Test that INPUT lexes as the integer VALUE. */ | |
2585 | ||
2586 | static void | |
56ba65a0 | 2587 | rust_lex_int_test (rust_parser *parser, const char *input, int value, int kind) |
c44af4eb | 2588 | { |
56ba65a0 | 2589 | RUSTSTYPE result = rust_lex_test_one (parser, input, kind); |
c44af4eb TT |
2590 | SELF_CHECK (result.typed_val_int.val == value); |
2591 | } | |
2592 | ||
2593 | /* Test that INPUT throws an exception with text ERR. */ | |
2594 | ||
2595 | static void | |
56ba65a0 TT |
2596 | rust_lex_exception_test (rust_parser *parser, const char *input, |
2597 | const char *err) | |
c44af4eb TT |
2598 | { |
2599 | TRY | |
2600 | { | |
2601 | /* The "kind" doesn't matter. */ | |
56ba65a0 | 2602 | rust_lex_test_one (parser, input, DECIMAL_INTEGER); |
c44af4eb TT |
2603 | SELF_CHECK (0); |
2604 | } | |
2605 | CATCH (except, RETURN_MASK_ERROR) | |
2606 | { | |
2607 | SELF_CHECK (strcmp (except.message, err) == 0); | |
2608 | } | |
2609 | END_CATCH | |
2610 | } | |
2611 | ||
2612 | /* Test that INPUT lexes as the identifier, string, or byte-string | |
2613 | VALUE. KIND holds the expected token kind. */ | |
2614 | ||
2615 | static void | |
56ba65a0 TT |
2616 | rust_lex_stringish_test (rust_parser *parser, const char *input, |
2617 | const char *value, int kind) | |
c44af4eb | 2618 | { |
56ba65a0 | 2619 | RUSTSTYPE result = rust_lex_test_one (parser, input, kind); |
c44af4eb TT |
2620 | SELF_CHECK (result.sval.length == strlen (value)); |
2621 | SELF_CHECK (strncmp (result.sval.ptr, value, result.sval.length) == 0); | |
2622 | } | |
2623 | ||
2624 | /* Helper to test that a string parses as a given token sequence. */ | |
2625 | ||
2626 | static void | |
56ba65a0 TT |
2627 | rust_lex_test_sequence (rust_parser *parser, const char *input, int len, |
2628 | const int expected[]) | |
c44af4eb TT |
2629 | { |
2630 | int i; | |
2631 | ||
2632 | lexptr = input; | |
2633 | paren_depth = 0; | |
2634 | ||
2635 | for (i = 0; i < len; ++i) | |
2636 | { | |
56ba65a0 TT |
2637 | RUSTSTYPE ignore; |
2638 | int token = rustyylex (&ignore, parser); | |
c44af4eb TT |
2639 | |
2640 | SELF_CHECK (token == expected[i]); | |
2641 | } | |
2642 | } | |
2643 | ||
2644 | /* Tests for an integer-parsing corner case. */ | |
2645 | ||
2646 | static void | |
56ba65a0 | 2647 | rust_lex_test_trailing_dot (rust_parser *parser) |
c44af4eb TT |
2648 | { |
2649 | const int expected1[] = { DECIMAL_INTEGER, '.', IDENT, '(', ')', 0 }; | |
2650 | const int expected2[] = { INTEGER, '.', IDENT, '(', ')', 0 }; | |
2651 | const int expected3[] = { FLOAT, EQEQ, '(', ')', 0 }; | |
2652 | const int expected4[] = { DECIMAL_INTEGER, DOTDOT, DECIMAL_INTEGER, 0 }; | |
2653 | ||
56ba65a0 TT |
2654 | rust_lex_test_sequence (parser, "23.g()", ARRAY_SIZE (expected1), expected1); |
2655 | rust_lex_test_sequence (parser, "23_0.g()", ARRAY_SIZE (expected2), | |
2656 | expected2); | |
2657 | rust_lex_test_sequence (parser, "23.==()", ARRAY_SIZE (expected3), | |
2658 | expected3); | |
2659 | rust_lex_test_sequence (parser, "23..25", ARRAY_SIZE (expected4), expected4); | |
c44af4eb TT |
2660 | } |
2661 | ||
2662 | /* Tests of completion. */ | |
2663 | ||
2664 | static void | |
56ba65a0 | 2665 | rust_lex_test_completion (rust_parser *parser) |
c44af4eb TT |
2666 | { |
2667 | const int expected[] = { IDENT, '.', COMPLETE, 0 }; | |
2668 | ||
2669 | parse_completion = 1; | |
2670 | ||
56ba65a0 TT |
2671 | rust_lex_test_sequence (parser, "something.wha", ARRAY_SIZE (expected), |
2672 | expected); | |
2673 | rust_lex_test_sequence (parser, "something.", ARRAY_SIZE (expected), | |
2674 | expected); | |
c44af4eb TT |
2675 | |
2676 | parse_completion = 0; | |
2677 | } | |
2678 | ||
2679 | /* Test pushback. */ | |
2680 | ||
2681 | static void | |
56ba65a0 | 2682 | rust_lex_test_push_back (rust_parser *parser) |
c44af4eb TT |
2683 | { |
2684 | int token; | |
56ba65a0 | 2685 | RUSTSTYPE lval; |
c44af4eb TT |
2686 | |
2687 | rust_lex_test_init (">>="); | |
2688 | ||
56ba65a0 | 2689 | token = rustyylex (&lval, parser); |
c44af4eb | 2690 | SELF_CHECK (token == COMPOUND_ASSIGN); |
56ba65a0 | 2691 | SELF_CHECK (lval.opcode == BINOP_RSH); |
c44af4eb TT |
2692 | |
2693 | rust_push_back ('='); | |
2694 | ||
56ba65a0 | 2695 | token = rustyylex (&lval, parser); |
c44af4eb TT |
2696 | SELF_CHECK (token == '='); |
2697 | ||
56ba65a0 | 2698 | token = rustyylex (&lval, parser); |
c44af4eb TT |
2699 | SELF_CHECK (token == 0); |
2700 | } | |
2701 | ||
2702 | /* Unit test the lexer. */ | |
2703 | ||
2704 | static void | |
2705 | rust_lex_tests (void) | |
2706 | { | |
2707 | int i; | |
2708 | ||
edd079d9 | 2709 | // Set up dummy "parser", so that rust_type works. |
e9d9f57e | 2710 | struct parser_state ps (0, &rust_language_defn, target_gdbarch ()); |
edd079d9 | 2711 | rust_parser parser (&ps); |
c44af4eb | 2712 | |
56ba65a0 TT |
2713 | rust_lex_test_one (&parser, "", 0); |
2714 | rust_lex_test_one (&parser, " \t \n \r ", 0); | |
2715 | rust_lex_test_one (&parser, "thread 23", 0); | |
2716 | rust_lex_test_one (&parser, "task 23", 0); | |
2717 | rust_lex_test_one (&parser, "th 104", 0); | |
2718 | rust_lex_test_one (&parser, "ta 97", 0); | |
2719 | ||
2720 | rust_lex_int_test (&parser, "'z'", 'z', INTEGER); | |
2721 | rust_lex_int_test (&parser, "'\\xff'", 0xff, INTEGER); | |
2722 | rust_lex_int_test (&parser, "'\\u{1016f}'", 0x1016f, INTEGER); | |
2723 | rust_lex_int_test (&parser, "b'z'", 'z', INTEGER); | |
2724 | rust_lex_int_test (&parser, "b'\\xfe'", 0xfe, INTEGER); | |
2725 | rust_lex_int_test (&parser, "b'\\xFE'", 0xfe, INTEGER); | |
2726 | rust_lex_int_test (&parser, "b'\\xfE'", 0xfe, INTEGER); | |
c44af4eb TT |
2727 | |
2728 | /* Test all escapes in both modes. */ | |
56ba65a0 TT |
2729 | rust_lex_int_test (&parser, "'\\n'", '\n', INTEGER); |
2730 | rust_lex_int_test (&parser, "'\\r'", '\r', INTEGER); | |
2731 | rust_lex_int_test (&parser, "'\\t'", '\t', INTEGER); | |
2732 | rust_lex_int_test (&parser, "'\\\\'", '\\', INTEGER); | |
2733 | rust_lex_int_test (&parser, "'\\0'", '\0', INTEGER); | |
2734 | rust_lex_int_test (&parser, "'\\''", '\'', INTEGER); | |
2735 | rust_lex_int_test (&parser, "'\\\"'", '"', INTEGER); | |
2736 | ||
2737 | rust_lex_int_test (&parser, "b'\\n'", '\n', INTEGER); | |
2738 | rust_lex_int_test (&parser, "b'\\r'", '\r', INTEGER); | |
2739 | rust_lex_int_test (&parser, "b'\\t'", '\t', INTEGER); | |
2740 | rust_lex_int_test (&parser, "b'\\\\'", '\\', INTEGER); | |
2741 | rust_lex_int_test (&parser, "b'\\0'", '\0', INTEGER); | |
2742 | rust_lex_int_test (&parser, "b'\\''", '\'', INTEGER); | |
2743 | rust_lex_int_test (&parser, "b'\\\"'", '"', INTEGER); | |
2744 | ||
2745 | rust_lex_exception_test (&parser, "'z", "Unterminated character literal"); | |
2746 | rust_lex_exception_test (&parser, "b'\\x0'", "Not enough hex digits seen"); | |
2747 | rust_lex_exception_test (&parser, "b'\\u{0}'", | |
2748 | "Unicode escape in byte literal"); | |
2749 | rust_lex_exception_test (&parser, "'\\x0'", "Not enough hex digits seen"); | |
2750 | rust_lex_exception_test (&parser, "'\\u0'", "Missing '{' in Unicode escape"); | |
2751 | rust_lex_exception_test (&parser, "'\\u{0", "Missing '}' in Unicode escape"); | |
2752 | rust_lex_exception_test (&parser, "'\\u{0000007}", "Overlong hex escape"); | |
2753 | rust_lex_exception_test (&parser, "'\\u{}", "Not enough hex digits seen"); | |
2754 | rust_lex_exception_test (&parser, "'\\Q'", "Invalid escape \\Q in literal"); | |
2755 | rust_lex_exception_test (&parser, "b'\\Q'", "Invalid escape \\Q in literal"); | |
2756 | ||
2757 | rust_lex_int_test (&parser, "23", 23, DECIMAL_INTEGER); | |
2758 | rust_lex_int_test (&parser, "2_344__29", 234429, INTEGER); | |
2759 | rust_lex_int_test (&parser, "0x1f", 0x1f, INTEGER); | |
2760 | rust_lex_int_test (&parser, "23usize", 23, INTEGER); | |
2761 | rust_lex_int_test (&parser, "23i32", 23, INTEGER); | |
2762 | rust_lex_int_test (&parser, "0x1_f", 0x1f, INTEGER); | |
2763 | rust_lex_int_test (&parser, "0b1_101011__", 0x6b, INTEGER); | |
2764 | rust_lex_int_test (&parser, "0o001177i64", 639, INTEGER); | |
2765 | ||
2766 | rust_lex_test_trailing_dot (&parser); | |
2767 | ||
2768 | rust_lex_test_one (&parser, "23.", FLOAT); | |
2769 | rust_lex_test_one (&parser, "23.99f32", FLOAT); | |
2770 | rust_lex_test_one (&parser, "23e7", FLOAT); | |
2771 | rust_lex_test_one (&parser, "23E-7", FLOAT); | |
2772 | rust_lex_test_one (&parser, "23e+7", FLOAT); | |
2773 | rust_lex_test_one (&parser, "23.99e+7f64", FLOAT); | |
2774 | rust_lex_test_one (&parser, "23.82f32", FLOAT); | |
2775 | ||
2776 | rust_lex_stringish_test (&parser, "hibob", "hibob", IDENT); | |
2777 | rust_lex_stringish_test (&parser, "hibob__93", "hibob__93", IDENT); | |
2778 | rust_lex_stringish_test (&parser, "thread", "thread", IDENT); | |
2779 | ||
2780 | rust_lex_stringish_test (&parser, "\"string\"", "string", STRING); | |
2781 | rust_lex_stringish_test (&parser, "\"str\\ting\"", "str\ting", STRING); | |
2782 | rust_lex_stringish_test (&parser, "\"str\\\"ing\"", "str\"ing", STRING); | |
2783 | rust_lex_stringish_test (&parser, "r\"str\\ing\"", "str\\ing", STRING); | |
2784 | rust_lex_stringish_test (&parser, "r#\"str\\ting\"#", "str\\ting", STRING); | |
2785 | rust_lex_stringish_test (&parser, "r###\"str\\\"ing\"###", "str\\\"ing", | |
2786 | STRING); | |
2787 | ||
2788 | rust_lex_stringish_test (&parser, "b\"string\"", "string", BYTESTRING); | |
2789 | rust_lex_stringish_test (&parser, "b\"\x73tring\"", "string", BYTESTRING); | |
2790 | rust_lex_stringish_test (&parser, "b\"str\\\"ing\"", "str\"ing", BYTESTRING); | |
2791 | rust_lex_stringish_test (&parser, "br####\"\\x73tring\"####", "\\x73tring", | |
c44af4eb TT |
2792 | BYTESTRING); |
2793 | ||
2794 | for (i = 0; i < ARRAY_SIZE (identifier_tokens); ++i) | |
56ba65a0 TT |
2795 | rust_lex_test_one (&parser, identifier_tokens[i].name, |
2796 | identifier_tokens[i].value); | |
c44af4eb TT |
2797 | |
2798 | for (i = 0; i < ARRAY_SIZE (operator_tokens); ++i) | |
56ba65a0 TT |
2799 | rust_lex_test_one (&parser, operator_tokens[i].name, |
2800 | operator_tokens[i].value); | |
c44af4eb | 2801 | |
56ba65a0 TT |
2802 | rust_lex_test_completion (&parser); |
2803 | rust_lex_test_push_back (&parser); | |
c44af4eb TT |
2804 | } |
2805 | ||
2806 | #endif /* GDB_SELF_TEST */ | |
2807 | ||
2808 | void | |
2809 | _initialize_rust_exp (void) | |
2810 | { | |
2811 | int code = regcomp (&number_regex, number_regex_text, REG_EXTENDED); | |
2812 | /* If the regular expression was incorrect, it was a programming | |
2813 | error. */ | |
2814 | gdb_assert (code == 0); | |
2815 | ||
2816 | #if GDB_SELF_TEST | |
1526853e | 2817 | selftests::register_test ("rust-lex", rust_lex_tests); |
c44af4eb TT |
2818 | #endif |
2819 | } |