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953192ba MD |
1 | %{ |
2 | /* | |
3 | * filter-parser.y | |
4 | * | |
5 | * LTTng filter expression parser | |
6 | * | |
7 | * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
11 | * as published by the Free Software Foundation. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this library; if not, write to the Free Software Foundation, | |
20 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | * | |
22 | * Grammar inspired from http://www.quut.com/c/ANSI-C-grammar-y.html | |
23 | */ | |
24 | ||
25 | #include <stdio.h> | |
26 | #include <unistd.h> | |
27 | #include <string.h> | |
28 | #include <stdlib.h> | |
29 | #include <assert.h> | |
30 | #include <errno.h> | |
31 | #include <inttypes.h> | |
953192ba | 32 | #include "filter-ast.h" |
95b9bd90 | 33 | #include "filter-parser.h" |
953192ba | 34 | |
a187da1a DG |
35 | #include <common/macros.h> |
36 | ||
37 | LTTNG_HIDDEN | |
953192ba | 38 | int yydebug; |
a187da1a | 39 | LTTNG_HIDDEN |
953192ba MD |
40 | int filter_parser_debug = 0; |
41 | ||
a187da1a | 42 | LTTNG_HIDDEN |
9039edd4 | 43 | int yyparse(struct filter_parser_ctx *parser_ctx, yyscan_t scanner); |
a187da1a | 44 | LTTNG_HIDDEN |
9039edd4 | 45 | int yylex(union YYSTYPE *yyval, yyscan_t scanner); |
a187da1a | 46 | LTTNG_HIDDEN |
953192ba | 47 | int yylex_init_extra(struct filter_parser_ctx *parser_ctx, yyscan_t * ptr_yy_globals); |
a187da1a | 48 | LTTNG_HIDDEN |
953192ba | 49 | int yylex_destroy(yyscan_t yyparser_ctx); |
a187da1a | 50 | LTTNG_HIDDEN |
953192ba MD |
51 | void yyrestart(FILE * in_str, yyscan_t parser_ctx); |
52 | ||
53 | struct gc_string { | |
54 | struct cds_list_head gc; | |
55 | size_t alloclen; | |
56 | char s[]; | |
57 | }; | |
58 | ||
59 | static const char *node_type_to_str[] = { | |
60 | [ NODE_UNKNOWN ] = "NODE_UNKNOWN", | |
61 | [ NODE_ROOT ] = "NODE_ROOT", | |
62 | [ NODE_EXPRESSION ] = "NODE_EXPRESSION", | |
63 | [ NODE_OP ] = "NODE_OP", | |
64 | [ NODE_UNARY_OP ] = "NODE_UNARY_OP", | |
65 | }; | |
66 | ||
a187da1a | 67 | LTTNG_HIDDEN |
953192ba MD |
68 | const char *node_type(struct filter_node *node) |
69 | { | |
70 | if (node->type < NR_NODE_TYPES) | |
71 | return node_type_to_str[node->type]; | |
72 | else | |
73 | return NULL; | |
74 | } | |
75 | ||
76 | static struct gc_string *gc_string_alloc(struct filter_parser_ctx *parser_ctx, | |
77 | size_t len) | |
78 | { | |
79 | struct gc_string *gstr; | |
80 | size_t alloclen; | |
81 | ||
82 | /* TODO: could be faster with find first bit or glib Gstring */ | |
83 | /* sizeof long to account for malloc header (int or long ?) */ | |
84 | for (alloclen = 8; alloclen < sizeof(long) + sizeof(*gstr) + len; | |
85 | alloclen *= 2); | |
86 | ||
87 | gstr = malloc(alloclen); | |
88 | cds_list_add(&gstr->gc, &parser_ctx->allocated_strings); | |
89 | gstr->alloclen = alloclen; | |
90 | return gstr; | |
91 | } | |
92 | ||
93 | /* | |
94 | * note: never use gc_string_append on a string that has external references. | |
95 | * gsrc will be garbage collected immediately, and gstr might be. | |
96 | * Should only be used to append characters to a string literal or constant. | |
97 | */ | |
a187da1a | 98 | LTTNG_HIDDEN |
953192ba MD |
99 | struct gc_string *gc_string_append(struct filter_parser_ctx *parser_ctx, |
100 | struct gc_string *gstr, | |
101 | struct gc_string *gsrc) | |
102 | { | |
103 | size_t newlen = strlen(gsrc->s) + strlen(gstr->s) + 1; | |
104 | size_t alloclen; | |
105 | ||
106 | /* TODO: could be faster with find first bit or glib Gstring */ | |
107 | /* sizeof long to account for malloc header (int or long ?) */ | |
108 | for (alloclen = 8; alloclen < sizeof(long) + sizeof(*gstr) + newlen; | |
109 | alloclen *= 2); | |
110 | ||
111 | if (alloclen > gstr->alloclen) { | |
112 | struct gc_string *newgstr; | |
113 | ||
114 | newgstr = gc_string_alloc(parser_ctx, newlen); | |
115 | strcpy(newgstr->s, gstr->s); | |
116 | strcat(newgstr->s, gsrc->s); | |
117 | cds_list_del(&gstr->gc); | |
118 | free(gstr); | |
119 | gstr = newgstr; | |
120 | } else { | |
121 | strcat(gstr->s, gsrc->s); | |
122 | } | |
123 | cds_list_del(&gsrc->gc); | |
124 | free(gsrc); | |
125 | return gstr; | |
126 | } | |
127 | ||
a187da1a | 128 | LTTNG_HIDDEN |
953192ba MD |
129 | void setstring(struct filter_parser_ctx *parser_ctx, YYSTYPE *lvalp, const char *src) |
130 | { | |
131 | lvalp->gs = gc_string_alloc(parser_ctx, strlen(src) + 1); | |
132 | strcpy(lvalp->gs->s, src); | |
133 | } | |
134 | ||
135 | static struct filter_node *make_node(struct filter_parser_ctx *scanner, | |
136 | enum node_type type) | |
137 | { | |
138 | struct filter_ast *ast = filter_parser_get_ast(scanner); | |
139 | struct filter_node *node; | |
140 | ||
141 | node = malloc(sizeof(*node)); | |
142 | if (!node) | |
143 | return NULL; | |
144 | memset(node, 0, sizeof(*node)); | |
145 | node->type = type; | |
146 | cds_list_add(&node->gc, &ast->allocated_nodes); | |
147 | ||
148 | switch (type) { | |
149 | case NODE_ROOT: | |
150 | fprintf(stderr, "[error] %s: trying to create root node\n", __func__); | |
151 | break; | |
152 | ||
153 | case NODE_EXPRESSION: | |
154 | break; | |
155 | case NODE_OP: | |
156 | break; | |
157 | case NODE_UNARY_OP: | |
158 | break; | |
159 | ||
160 | case NODE_UNKNOWN: | |
161 | default: | |
162 | fprintf(stderr, "[error] %s: unknown node type %d\n", __func__, | |
163 | (int) type); | |
164 | break; | |
165 | } | |
166 | ||
167 | return node; | |
168 | } | |
169 | ||
170 | static struct filter_node *make_op_node(struct filter_parser_ctx *scanner, | |
171 | enum op_type type, | |
172 | struct filter_node *lchild, | |
173 | struct filter_node *rchild) | |
174 | { | |
175 | struct filter_ast *ast = filter_parser_get_ast(scanner); | |
176 | struct filter_node *node; | |
177 | ||
178 | node = malloc(sizeof(*node)); | |
179 | if (!node) | |
180 | return NULL; | |
181 | memset(node, 0, sizeof(*node)); | |
182 | node->type = NODE_OP; | |
183 | cds_list_add(&node->gc, &ast->allocated_nodes); | |
184 | node->u.op.type = type; | |
185 | node->u.op.lchild = lchild; | |
186 | node->u.op.rchild = rchild; | |
187 | return node; | |
188 | } | |
189 | ||
a187da1a | 190 | LTTNG_HIDDEN |
9039edd4 | 191 | void yyerror(struct filter_parser_ctx *parser_ctx, yyscan_t scanner, const char *str) |
953192ba MD |
192 | { |
193 | fprintf(stderr, "error %s\n", str); | |
194 | } | |
195 | ||
a187da1a | 196 | LTTNG_HIDDEN |
953192ba MD |
197 | int yywrap(void) |
198 | { | |
199 | return 1; | |
200 | } | |
201 | ||
202 | #define parse_error(parser_ctx, str) \ | |
203 | do { \ | |
9039edd4 | 204 | yyerror(parser_ctx, parser_ctx->scanner, YY_("parse error: " str "\n")); \ |
953192ba MD |
205 | YYERROR; \ |
206 | } while (0) | |
207 | ||
208 | static void free_strings(struct cds_list_head *list) | |
209 | { | |
210 | struct gc_string *gstr, *tmp; | |
211 | ||
212 | cds_list_for_each_entry_safe(gstr, tmp, list, gc) | |
213 | free(gstr); | |
214 | } | |
215 | ||
216 | static struct filter_ast *filter_ast_alloc(void) | |
217 | { | |
218 | struct filter_ast *ast; | |
219 | ||
220 | ast = malloc(sizeof(*ast)); | |
221 | if (!ast) | |
222 | return NULL; | |
223 | memset(ast, 0, sizeof(*ast)); | |
224 | CDS_INIT_LIST_HEAD(&ast->allocated_nodes); | |
225 | ast->root.type = NODE_ROOT; | |
226 | return ast; | |
227 | } | |
228 | ||
229 | static void filter_ast_free(struct filter_ast *ast) | |
230 | { | |
231 | struct filter_node *node, *tmp; | |
232 | ||
233 | cds_list_for_each_entry_safe(node, tmp, &ast->allocated_nodes, gc) | |
234 | free(node); | |
37600d79 | 235 | free(ast); |
953192ba MD |
236 | } |
237 | ||
a187da1a | 238 | LTTNG_HIDDEN |
953192ba MD |
239 | int filter_parser_ctx_append_ast(struct filter_parser_ctx *parser_ctx) |
240 | { | |
9039edd4 | 241 | return yyparse(parser_ctx, parser_ctx->scanner); |
953192ba MD |
242 | } |
243 | ||
a187da1a | 244 | LTTNG_HIDDEN |
953192ba MD |
245 | struct filter_parser_ctx *filter_parser_ctx_alloc(FILE *input) |
246 | { | |
247 | struct filter_parser_ctx *parser_ctx; | |
248 | int ret; | |
249 | ||
250 | yydebug = filter_parser_debug; | |
251 | ||
252 | parser_ctx = malloc(sizeof(*parser_ctx)); | |
253 | if (!parser_ctx) | |
254 | return NULL; | |
255 | memset(parser_ctx, 0, sizeof(*parser_ctx)); | |
256 | ||
257 | ret = yylex_init_extra(parser_ctx, &parser_ctx->scanner); | |
258 | if (ret) { | |
259 | fprintf(stderr, "yylex_init error\n"); | |
260 | goto cleanup_parser_ctx; | |
261 | } | |
262 | /* Start processing new stream */ | |
263 | yyrestart(input, parser_ctx->scanner); | |
264 | ||
265 | parser_ctx->ast = filter_ast_alloc(); | |
266 | if (!parser_ctx->ast) | |
267 | goto cleanup_lexer; | |
268 | CDS_INIT_LIST_HEAD(&parser_ctx->allocated_strings); | |
269 | ||
270 | if (yydebug) | |
271 | fprintf(stdout, "parser_ctx input is a%s.\n", | |
272 | isatty(fileno(input)) ? "n interactive tty" : | |
273 | " noninteractive file"); | |
274 | ||
275 | return parser_ctx; | |
276 | ||
277 | cleanup_lexer: | |
278 | ret = yylex_destroy(parser_ctx->scanner); | |
279 | if (!ret) | |
280 | fprintf(stderr, "yylex_destroy error\n"); | |
281 | cleanup_parser_ctx: | |
282 | free(parser_ctx); | |
283 | return NULL; | |
284 | } | |
285 | ||
a187da1a | 286 | LTTNG_HIDDEN |
953192ba MD |
287 | void filter_parser_ctx_free(struct filter_parser_ctx *parser_ctx) |
288 | { | |
289 | int ret; | |
290 | ||
291 | free_strings(&parser_ctx->allocated_strings); | |
292 | filter_ast_free(parser_ctx->ast); | |
293 | ret = yylex_destroy(parser_ctx->scanner); | |
294 | if (ret) | |
295 | fprintf(stderr, "yylex_destroy error\n"); | |
296 | free(parser_ctx); | |
297 | } | |
298 | ||
299 | %} | |
300 | ||
301 | %define api.pure | |
302 | /* %locations */ | |
303 | %parse-param {struct filter_parser_ctx *parser_ctx} | |
9039edd4 ZT |
304 | %parse-param {yyscan_t scanner} |
305 | %lex-param {yyscan_t scanner} | |
953192ba MD |
306 | %start translation_unit |
307 | %token CHARACTER_CONSTANT_START SQUOTE STRING_LITERAL_START DQUOTE | |
308 | %token ESCSEQ CHAR_STRING_TOKEN | |
e90d8561 | 309 | %token DECIMAL_CONSTANT OCTAL_CONSTANT HEXADECIMAL_CONSTANT FLOAT_CONSTANT |
953192ba MD |
310 | %token LSBRAC RSBRAC LPAREN RPAREN LBRAC RBRAC RARROW |
311 | %token STAR PLUS MINUS | |
312 | %token MOD_OP DIV_OP RIGHT_OP LEFT_OP | |
313 | %token EQ_OP NE_OP LE_OP GE_OP LT_OP GT_OP AND_OP OR_OP NOT_OP | |
314 | %token ASSIGN COLON SEMICOLON DOTDOTDOT DOT EQUAL COMMA | |
315 | %token XOR_BIN AND_BIN OR_BIN NOT_BIN | |
316 | ||
586dc72f | 317 | %token <gs> IDENTIFIER GLOBAL_IDENTIFIER |
953192ba MD |
318 | %token ERROR |
319 | %union | |
320 | { | |
321 | long long ll; | |
322 | char c; | |
323 | struct gc_string *gs; | |
324 | struct filter_node *n; | |
325 | } | |
326 | ||
327 | %type <gs> s_char s_char_sequence c_char c_char_sequence | |
328 | ||
329 | %type <n> primary_expression | |
330 | %type <n> postfix_expression | |
331 | %type <n> unary_expression | |
332 | %type <n> unary_operator | |
333 | %type <n> multiplicative_expression | |
334 | %type <n> additive_expression | |
335 | %type <n> shift_expression | |
336 | %type <n> relational_expression | |
337 | %type <n> equality_expression | |
338 | %type <n> and_expression | |
339 | %type <n> exclusive_or_expression | |
340 | %type <n> inclusive_or_expression | |
341 | %type <n> logical_and_expression | |
342 | %type <n> logical_or_expression | |
343 | %type <n> expression | |
344 | ||
345 | %% | |
346 | ||
347 | ||
348 | /* 1.5 Constants */ | |
349 | ||
350 | c_char_sequence: | |
351 | c_char | |
352 | { $$ = $1; } | |
353 | | c_char_sequence c_char | |
354 | { $$ = gc_string_append(parser_ctx, $1, $2); } | |
355 | ; | |
356 | ||
357 | c_char: | |
358 | CHAR_STRING_TOKEN | |
359 | { $$ = yylval.gs; } | |
360 | | ESCSEQ | |
361 | { | |
362 | parse_error(parser_ctx, "escape sequences not supported yet"); | |
363 | } | |
364 | ; | |
365 | ||
366 | /* 1.6 String literals */ | |
367 | ||
368 | s_char_sequence: | |
369 | s_char | |
370 | { $$ = $1; } | |
371 | | s_char_sequence s_char | |
372 | { $$ = gc_string_append(parser_ctx, $1, $2); } | |
373 | ; | |
374 | ||
375 | s_char: | |
376 | CHAR_STRING_TOKEN | |
377 | { $$ = yylval.gs; } | |
378 | | ESCSEQ | |
379 | { | |
380 | parse_error(parser_ctx, "escape sequences not supported yet"); | |
381 | } | |
382 | ; | |
383 | ||
384 | primary_expression | |
385 | : IDENTIFIER | |
386 | { | |
387 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
388 | $$->u.expression.type = AST_EXP_IDENTIFIER; | |
389 | $$->u.expression.u.identifier = yylval.gs->s; | |
390 | } | |
586dc72f MD |
391 | | GLOBAL_IDENTIFIER |
392 | { | |
393 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
394 | $$->u.expression.type = AST_EXP_GLOBAL_IDENTIFIER; | |
395 | $$->u.expression.u.identifier = yylval.gs->s; | |
396 | } | |
397 | ||
953192ba MD |
398 | | DECIMAL_CONSTANT |
399 | { | |
400 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
401 | $$->u.expression.type = AST_EXP_CONSTANT; | |
402 | sscanf(yylval.gs->s, "%" PRIu64, | |
403 | &$$->u.expression.u.constant); | |
404 | } | |
405 | | OCTAL_CONSTANT | |
406 | { | |
407 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
408 | $$->u.expression.type = AST_EXP_CONSTANT; | |
409 | sscanf(yylval.gs->s, "0%" PRIo64, | |
410 | &$$->u.expression.u.constant); | |
411 | } | |
412 | | HEXADECIMAL_CONSTANT | |
413 | { | |
414 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
415 | $$->u.expression.type = AST_EXP_CONSTANT; | |
416 | sscanf(yylval.gs->s, "0x%" PRIx64, | |
417 | &$$->u.expression.u.constant); | |
418 | } | |
e90d8561 MD |
419 | | FLOAT_CONSTANT |
420 | { | |
421 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
422 | $$->u.expression.type = AST_EXP_FLOAT_CONSTANT; | |
423 | sscanf(yylval.gs->s, "%lg", | |
424 | &$$->u.expression.u.float_constant); | |
425 | } | |
953192ba MD |
426 | | STRING_LITERAL_START DQUOTE |
427 | { | |
428 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
429 | $$->u.expression.type = AST_EXP_STRING; | |
430 | $$->u.expression.u.string = ""; | |
431 | } | |
432 | | STRING_LITERAL_START s_char_sequence DQUOTE | |
433 | { | |
434 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
435 | $$->u.expression.type = AST_EXP_STRING; | |
436 | $$->u.expression.u.string = $2->s; | |
437 | } | |
438 | | CHARACTER_CONSTANT_START c_char_sequence SQUOTE | |
439 | { | |
440 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
441 | $$->u.expression.type = AST_EXP_STRING; | |
442 | $$->u.expression.u.string = $2->s; | |
443 | } | |
444 | | LPAREN expression RPAREN | |
445 | { | |
446 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
447 | $$->u.expression.type = AST_EXP_NESTED; | |
448 | $$->u.expression.u.child = $2; | |
449 | } | |
450 | ; | |
451 | ||
452 | postfix_expression | |
453 | : primary_expression | |
454 | { $$ = $1; } | |
455 | | postfix_expression DOT IDENTIFIER | |
456 | { | |
457 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
458 | $$->u.expression.type = AST_EXP_IDENTIFIER; | |
459 | $$->u.expression.post_op = AST_LINK_DOT; | |
460 | $$->u.expression.u.identifier = $3->s; | |
461 | $$->u.expression.prev = $1; | |
462 | } | |
463 | | postfix_expression RARROW IDENTIFIER | |
464 | { | |
465 | $$ = make_node(parser_ctx, NODE_EXPRESSION); | |
466 | $$->u.expression.type = AST_EXP_IDENTIFIER; | |
467 | $$->u.expression.post_op = AST_LINK_RARROW; | |
468 | $$->u.expression.u.identifier = $3->s; | |
469 | $$->u.expression.prev = $1; | |
470 | } | |
471 | ; | |
472 | ||
473 | unary_expression | |
474 | : postfix_expression | |
475 | { $$ = $1; } | |
476 | | unary_operator unary_expression | |
477 | { | |
478 | $$ = $1; | |
479 | $$->u.unary_op.child = $2; | |
480 | } | |
481 | ; | |
482 | ||
483 | unary_operator | |
484 | : PLUS | |
485 | { | |
486 | $$ = make_node(parser_ctx, NODE_UNARY_OP); | |
487 | $$->u.unary_op.type = AST_UNARY_PLUS; | |
488 | } | |
489 | | MINUS | |
490 | { | |
491 | $$ = make_node(parser_ctx, NODE_UNARY_OP); | |
492 | $$->u.unary_op.type = AST_UNARY_MINUS; | |
493 | } | |
494 | | NOT_OP | |
495 | { | |
496 | $$ = make_node(parser_ctx, NODE_UNARY_OP); | |
497 | $$->u.unary_op.type = AST_UNARY_NOT; | |
498 | } | |
ab78f161 CB |
499 | | NOT_BIN |
500 | { | |
501 | $$ = make_node(parser_ctx, NODE_UNARY_OP); | |
502 | $$->u.unary_op.type = AST_UNARY_BIN_NOT; | |
503 | } | |
953192ba MD |
504 | ; |
505 | ||
506 | multiplicative_expression | |
507 | : unary_expression | |
508 | { $$ = $1; } | |
509 | | multiplicative_expression STAR unary_expression | |
510 | { | |
511 | $$ = make_op_node(parser_ctx, AST_OP_MUL, $1, $3); | |
512 | } | |
513 | | multiplicative_expression DIV_OP unary_expression | |
514 | { | |
515 | $$ = make_op_node(parser_ctx, AST_OP_DIV, $1, $3); | |
516 | } | |
517 | | multiplicative_expression MOD_OP unary_expression | |
518 | { | |
519 | $$ = make_op_node(parser_ctx, AST_OP_MOD, $1, $3); | |
520 | } | |
521 | ; | |
522 | ||
523 | additive_expression | |
524 | : multiplicative_expression | |
525 | { $$ = $1; } | |
526 | | additive_expression PLUS multiplicative_expression | |
527 | { | |
528 | $$ = make_op_node(parser_ctx, AST_OP_PLUS, $1, $3); | |
529 | } | |
530 | | additive_expression MINUS multiplicative_expression | |
531 | { | |
532 | $$ = make_op_node(parser_ctx, AST_OP_MINUS, $1, $3); | |
533 | } | |
534 | ; | |
535 | ||
536 | shift_expression | |
537 | : additive_expression | |
538 | { $$ = $1; } | |
539 | | shift_expression LEFT_OP additive_expression | |
540 | { | |
541 | $$ = make_op_node(parser_ctx, AST_OP_LSHIFT, $1, $3); | |
542 | } | |
543 | | shift_expression RIGHT_OP additive_expression | |
544 | { | |
545 | $$ = make_op_node(parser_ctx, AST_OP_RSHIFT, $1, $3); | |
546 | } | |
547 | ; | |
548 | ||
549 | relational_expression | |
550 | : shift_expression | |
551 | { $$ = $1; } | |
552 | | relational_expression LT_OP shift_expression | |
553 | { | |
554 | $$ = make_op_node(parser_ctx, AST_OP_LT, $1, $3); | |
555 | } | |
556 | | relational_expression GT_OP shift_expression | |
557 | { | |
558 | $$ = make_op_node(parser_ctx, AST_OP_GT, $1, $3); | |
559 | } | |
560 | | relational_expression LE_OP shift_expression | |
561 | { | |
562 | $$ = make_op_node(parser_ctx, AST_OP_LE, $1, $3); | |
563 | } | |
564 | | relational_expression GE_OP shift_expression | |
565 | { | |
566 | $$ = make_op_node(parser_ctx, AST_OP_GE, $1, $3); | |
567 | } | |
568 | ; | |
569 | ||
570 | equality_expression | |
571 | : relational_expression | |
572 | { $$ = $1; } | |
573 | | equality_expression EQ_OP relational_expression | |
574 | { | |
575 | $$ = make_op_node(parser_ctx, AST_OP_EQ, $1, $3); | |
576 | } | |
577 | | equality_expression NE_OP relational_expression | |
578 | { | |
579 | $$ = make_op_node(parser_ctx, AST_OP_NE, $1, $3); | |
580 | } | |
581 | ; | |
582 | ||
583 | and_expression | |
584 | : equality_expression | |
585 | { $$ = $1; } | |
586 | | and_expression AND_BIN equality_expression | |
587 | { | |
588 | $$ = make_op_node(parser_ctx, AST_OP_BIN_AND, $1, $3); | |
589 | } | |
590 | ; | |
591 | ||
592 | exclusive_or_expression | |
593 | : and_expression | |
594 | { $$ = $1; } | |
595 | | exclusive_or_expression XOR_BIN and_expression | |
596 | { | |
597 | $$ = make_op_node(parser_ctx, AST_OP_BIN_XOR, $1, $3); | |
598 | } | |
599 | ; | |
600 | ||
601 | inclusive_or_expression | |
602 | : exclusive_or_expression | |
603 | { $$ = $1; } | |
604 | | inclusive_or_expression OR_BIN exclusive_or_expression | |
605 | { | |
606 | $$ = make_op_node(parser_ctx, AST_OP_BIN_OR, $1, $3); | |
607 | } | |
608 | ; | |
609 | ||
610 | logical_and_expression | |
611 | : inclusive_or_expression | |
612 | { $$ = $1; } | |
613 | | logical_and_expression AND_OP inclusive_or_expression | |
614 | { | |
615 | $$ = make_op_node(parser_ctx, AST_OP_AND, $1, $3); | |
616 | } | |
617 | ; | |
618 | ||
619 | logical_or_expression | |
620 | : logical_and_expression | |
621 | { $$ = $1; } | |
622 | | logical_or_expression OR_OP logical_and_expression | |
623 | { | |
624 | $$ = make_op_node(parser_ctx, AST_OP_OR, $1, $3); | |
625 | } | |
626 | ; | |
627 | ||
628 | expression | |
629 | : logical_or_expression | |
630 | { $$ = $1; } | |
631 | ; | |
632 | ||
633 | translation_unit | |
634 | : expression | |
635 | { | |
636 | parser_ctx->ast->root.u.root.child = $1; | |
637 | } | |
638 | ; |