2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
23 #include <libfirm/firm_types.h>
33 /** The AST obstack contains all data that must stay in the AST. */
34 extern struct obstack ast_obstack;
37 * Operator precedence classes
39 typedef enum precedence_t {
41 PREC_EXPRESSION, /* , left to right */
42 PREC_ASSIGNMENT, /* = += -= *= /= %= <<= >>= &= ^= |= right to left */
43 PREC_CONDITIONAL, /* ?: right to left */
44 PREC_LOGICAL_OR, /* || left to right */
45 PREC_LOGICAL_AND, /* && left to right */
46 PREC_OR, /* | left to right */
47 PREC_XOR, /* ^ left to right */
48 PREC_AND, /* & left to right */
49 PREC_EQUALITY, /* == != left to right */
50 PREC_RELATIONAL, /* < <= > >= left to right */
51 PREC_SHIFT, /* << >> left to right */
52 PREC_ADDITIVE, /* + - left to right */
53 PREC_MULTIPLICATIVE, /* * / % left to right */
54 PREC_CAST, /* (type) right to left */
55 PREC_UNARY, /* ! ~ ++ -- + - * & sizeof right to left */
56 PREC_POSTFIX, /* () [] -> . left to right */
64 typedef enum expression_kind_t {
68 EXPR_REFERENCE_ENUM_VALUE,
70 EXPR_CHARACTER_CONSTANT,
71 EXPR_WIDE_CHARACTER_CONSTANT,
73 EXPR_WIDE_STRING_LITERAL,
74 EXPR_COMPOUND_LITERAL,
85 EXPR_BUILTIN_CONSTANT_P,
86 EXPR_BUILTIN_PREFETCH,
91 EXPR_LABEL_ADDRESS, /**< GCC extension &&label operator */
94 EXPR_UNARY_NEGATE = EXPR_UNARY_FIRST,
96 EXPR_UNARY_BITWISE_NEGATE,
98 EXPR_UNARY_DEREFERENCE,
99 EXPR_UNARY_TAKE_ADDRESS,
100 EXPR_UNARY_POSTFIX_INCREMENT,
101 EXPR_UNARY_POSTFIX_DECREMENT,
102 EXPR_UNARY_PREFIX_INCREMENT,
103 EXPR_UNARY_PREFIX_DECREMENT,
105 EXPR_UNARY_CAST_IMPLICIT, /**< compiler generated cast */
106 EXPR_UNARY_ASSUME, /**< MS __assume() */
108 EXPR_UNARY_DELETE_ARRAY,
110 EXPR_UNARY_LAST = EXPR_UNARY_THROW,
113 EXPR_BINARY_ADD = EXPR_BINARY_FIRST,
119 EXPR_BINARY_NOTEQUAL,
121 EXPR_BINARY_LESSEQUAL,
123 EXPR_BINARY_GREATEREQUAL,
124 EXPR_BINARY_BITWISE_AND,
125 EXPR_BINARY_BITWISE_OR,
126 EXPR_BINARY_BITWISE_XOR,
127 EXPR_BINARY_LOGICAL_AND,
128 EXPR_BINARY_LOGICAL_OR,
129 EXPR_BINARY_SHIFTLEFT,
130 EXPR_BINARY_SHIFTRIGHT,
132 EXPR_BINARY_MUL_ASSIGN,
133 EXPR_BINARY_DIV_ASSIGN,
134 EXPR_BINARY_MOD_ASSIGN,
135 EXPR_BINARY_ADD_ASSIGN,
136 EXPR_BINARY_SUB_ASSIGN,
137 EXPR_BINARY_SHIFTLEFT_ASSIGN,
138 EXPR_BINARY_SHIFTRIGHT_ASSIGN,
139 EXPR_BINARY_BITWISE_AND_ASSIGN,
140 EXPR_BINARY_BITWISE_XOR_ASSIGN,
141 EXPR_BINARY_BITWISE_OR_ASSIGN,
144 EXPR_BINARY_BUILTIN_EXPECT,
145 EXPR_BINARY_ISGREATER,
146 EXPR_BINARY_ISGREATEREQUAL,
148 EXPR_BINARY_ISLESSEQUAL,
149 EXPR_BINARY_ISLESSGREATER,
150 EXPR_BINARY_ISUNORDERED,
151 EXPR_BINARY_LAST = EXPR_BINARY_ISUNORDERED,
154 typedef enum funcname_kind_t {
155 FUNCNAME_FUNCTION, /**< C99 __func__, older __FUNCTION__ */
156 FUNCNAME_PRETTY_FUNCTION, /**< GNUC __PRETTY_FUNCTION__ */
157 FUNCNAME_FUNCSIG, /**< MS __FUNCSIG__ */
158 FUNCNAME_FUNCDNAME /**< MS __FUNCDNAME__ */
161 /* convenience macros */
162 #define EXPR_BINARY_CASES \
163 case EXPR_BINARY_ADD: \
164 case EXPR_BINARY_SUB: \
165 case EXPR_BINARY_MUL: \
166 case EXPR_BINARY_DIV: \
167 case EXPR_BINARY_MOD: \
168 case EXPR_BINARY_EQUAL: \
169 case EXPR_BINARY_NOTEQUAL: \
170 case EXPR_BINARY_LESS: \
171 case EXPR_BINARY_LESSEQUAL: \
172 case EXPR_BINARY_GREATER: \
173 case EXPR_BINARY_GREATEREQUAL: \
174 case EXPR_BINARY_BITWISE_AND: \
175 case EXPR_BINARY_BITWISE_OR: \
176 case EXPR_BINARY_BITWISE_XOR: \
177 case EXPR_BINARY_LOGICAL_AND: \
178 case EXPR_BINARY_LOGICAL_OR: \
179 case EXPR_BINARY_SHIFTLEFT: \
180 case EXPR_BINARY_SHIFTRIGHT: \
181 case EXPR_BINARY_ASSIGN: \
182 case EXPR_BINARY_MUL_ASSIGN: \
183 case EXPR_BINARY_DIV_ASSIGN: \
184 case EXPR_BINARY_MOD_ASSIGN: \
185 case EXPR_BINARY_ADD_ASSIGN: \
186 case EXPR_BINARY_SUB_ASSIGN: \
187 case EXPR_BINARY_SHIFTLEFT_ASSIGN: \
188 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: \
189 case EXPR_BINARY_BITWISE_AND_ASSIGN: \
190 case EXPR_BINARY_BITWISE_XOR_ASSIGN: \
191 case EXPR_BINARY_BITWISE_OR_ASSIGN: \
192 case EXPR_BINARY_COMMA: \
193 case EXPR_BINARY_BUILTIN_EXPECT: \
194 case EXPR_BINARY_ISGREATER: \
195 case EXPR_BINARY_ISGREATEREQUAL: \
196 case EXPR_BINARY_ISLESS: \
197 case EXPR_BINARY_ISLESSEQUAL: \
198 case EXPR_BINARY_ISLESSGREATER: \
199 case EXPR_BINARY_ISUNORDERED:
202 * unary expression with mandatory operand
204 #define EXPR_UNARY_CASES_MANDATORY \
205 case EXPR_UNARY_NEGATE: \
206 case EXPR_UNARY_PLUS: \
207 case EXPR_UNARY_BITWISE_NEGATE: \
208 case EXPR_UNARY_NOT: \
209 case EXPR_UNARY_DEREFERENCE: \
210 case EXPR_UNARY_TAKE_ADDRESS: \
211 case EXPR_UNARY_POSTFIX_INCREMENT: \
212 case EXPR_UNARY_POSTFIX_DECREMENT: \
213 case EXPR_UNARY_PREFIX_INCREMENT: \
214 case EXPR_UNARY_PREFIX_DECREMENT: \
215 case EXPR_UNARY_CAST: \
216 case EXPR_UNARY_CAST_IMPLICIT: \
217 case EXPR_UNARY_ASSUME: \
218 case EXPR_UNARY_DELETE: \
219 case EXPR_UNARY_DELETE_ARRAY:
222 * unary expression with optinal operand
224 #define EXPR_UNARY_CASES_OPTIONAL \
225 case EXPR_UNARY_THROW: \
227 #define EXPR_UNARY_CASES \
228 EXPR_UNARY_CASES_MANDATORY \
229 EXPR_UNARY_CASES_OPTIONAL
231 struct expression_base_t {
232 expression_kind_t kind;
234 source_position_t source_position;
240 struct const_expression_t {
241 expression_base_t base;
244 long double float_value;
246 wide_string_t wide_character;
248 bool is_ms_noop; /**< True, if this constant is the result
249 of an microsoft __noop operator */
252 struct string_literal_expression_t {
253 expression_base_t base;
257 struct funcname_expression_t {
258 expression_base_t base;
259 funcname_kind_t kind;
260 string_t value; /**< the value once assigned. */
263 struct wide_string_literal_expression_t {
264 expression_base_t base;
268 struct compound_literal_expression_t {
269 expression_base_t base;
271 initializer_t *initializer;
274 struct builtin_symbol_expression_t {
275 expression_base_t base;
279 struct builtin_constant_expression_t {
280 expression_base_t base;
284 struct builtin_prefetch_expression_t {
285 expression_base_t base;
288 expression_t *locality;
291 struct reference_expression_t {
292 expression_base_t base;
296 struct call_argument_t {
297 expression_t *expression;
298 call_argument_t *next;
301 struct call_expression_t {
302 expression_base_t base;
303 expression_t *function;
304 call_argument_t *arguments;
307 struct unary_expression_t {
308 expression_base_t base;
312 struct binary_expression_t {
313 expression_base_t base;
318 struct select_expression_t {
319 expression_base_t base;
320 expression_t *compound;
321 entity_t *compound_entry;
324 struct array_access_expression_t {
325 expression_base_t base;
326 expression_t *array_ref;
328 bool flipped; /**< index/ref was written in a 5[a] way */
331 struct typeprop_expression_t {
332 expression_base_t base;
334 expression_t *tp_expression;
337 struct designator_t {
338 source_position_t source_position;
340 expression_t *array_index;
344 struct offsetof_expression_t {
345 expression_base_t base;
347 designator_t *designator;
350 struct va_start_expression_t {
351 expression_base_t base;
353 variable_t *parameter;
356 struct va_arg_expression_t {
357 expression_base_t base;
361 struct conditional_expression_t {
362 expression_base_t base;
363 expression_t *condition;
364 expression_t *true_expression;
365 expression_t *false_expression;
368 struct statement_expression_t {
369 expression_base_t base;
370 statement_t *statement;
373 struct classify_type_expression_t {
374 expression_base_t base;
375 expression_t *type_expression;
378 struct label_address_expression_t {
379 expression_base_t base;
384 expression_kind_t kind;
385 expression_base_t base;
386 const_expression_t conste;
387 funcname_expression_t funcname;
388 string_literal_expression_t string;
389 wide_string_literal_expression_t wide_string;
390 compound_literal_expression_t compound_literal;
391 builtin_symbol_expression_t builtin_symbol;
392 builtin_constant_expression_t builtin_constant;
393 builtin_prefetch_expression_t builtin_prefetch;
394 reference_expression_t reference;
395 call_expression_t call;
396 unary_expression_t unary;
397 binary_expression_t binary;
398 select_expression_t select;
399 array_access_expression_t array_access;
400 typeprop_expression_t typeprop;
401 offsetof_expression_t offsetofe;
402 va_start_expression_t va_starte;
403 va_arg_expression_t va_arge;
404 conditional_expression_t conditional;
405 statement_expression_t statement;
406 classify_type_expression_t classify_type;
407 label_address_expression_t label_address;
410 typedef enum initializer_kind_t {
414 INITIALIZER_WIDE_STRING,
415 INITIALIZER_DESIGNATOR
416 } initializer_kind_t;
418 struct initializer_base_t {
419 initializer_kind_t kind;
422 struct initializer_value_t {
423 initializer_base_t base;
427 struct initializer_list_t {
428 initializer_base_t base;
430 initializer_t *initializers[];
433 struct initializer_string_t {
434 initializer_base_t base;
438 struct initializer_wide_string_t {
439 initializer_base_t base;
440 wide_string_t string;
443 struct initializer_designator_t {
444 initializer_base_t base;
445 designator_t *designator;
448 union initializer_t {
449 initializer_kind_t kind;
450 initializer_base_t base;
451 initializer_value_t value;
452 initializer_list_t list;
453 initializer_string_t string;
454 initializer_wide_string_t wide_string;
455 initializer_designator_t designator;
461 typedef enum gnu_attribute_kind_t {
472 GNU_AK_ALWAYS_INLINE,
478 GNU_AK_TRANSPARENT_UNION,
486 GNU_AK_NO_INSTRUMENT_FUNCTION,
487 GNU_AK_WARN_UNUSED_RESULT,
492 GNU_AK_FUNCTION_VECTOR,
494 GNU_AK_INTERRUPT_HANDLER,
500 GNU_AK_EIGTHBIT_DATA,
505 GNU_AK_EXTERNALLY_VISIBLE,
528 } gnu_attribute_kind_t;
530 typedef enum statement_kind_t {
535 STATEMENT_DECLARATION,
536 STATEMENT_LOCAL_LABEL,
539 STATEMENT_EXPRESSION,
544 STATEMENT_CASE_LABEL,
549 STATEMENT_MS_TRY, /**< MS __try/__finally or __try/__except */
550 STATEMENT_LEAVE /**< MS __leave */
553 struct statement_base_t {
554 statement_kind_t kind;
556 source_position_t source_position;
564 struct invalid_statement_t {
565 statement_base_t base;
568 struct empty_statement_t {
569 statement_base_t base;
572 struct return_statement_t {
573 statement_base_t base;
577 struct compound_statement_t {
578 statement_base_t base;
579 statement_t *statements;
583 struct declaration_statement_t {
584 statement_base_t base;
585 entity_t *declarations_begin;
586 entity_t *declarations_end;
589 struct local_label_statement_t {
590 statement_base_t base;
591 entity_t *labels_begin;
592 entity_t *labels_end;
595 struct if_statement_t {
596 statement_base_t base;
597 expression_t *condition;
598 statement_t *true_statement;
599 statement_t *false_statement;
602 struct switch_statement_t {
603 statement_base_t base;
604 expression_t *expression;
606 case_label_statement_t *first_case, *last_case; /**< List of all cases, including default. */
607 case_label_statement_t *default_label; /**< The default label if existent. */
608 unsigned long default_proj_nr; /**< The Proj-number for the default Proj. */
611 struct goto_statement_t {
612 statement_base_t base;
613 label_t *label; /**< The destination label. */
614 expression_t *expression; /**< The expression for an assigned goto. */
615 goto_statement_t *next; /**< links all goto statements of a function */
618 struct case_label_statement_t {
619 statement_base_t base;
620 expression_t *expression; /**< The case label expression, NULL for default label. */
621 expression_t *end_range; /**< For GNUC case a .. b: the end range expression, NULL else. */
622 case_label_statement_t *next; /**< link to the next case label in switch */
623 statement_t *statement;
624 long first_case; /**< The folded value of expression. */
625 long last_case; /**< The folded value of end_range. */
626 bool is_bad; /**< If set marked as bad to suppress warnings. */
627 bool is_empty_range; /**< If set marked this as an empty range. */
630 struct label_statement_t {
631 statement_base_t base;
633 statement_t *statement;
634 label_statement_t *next; /**< links all label statements of a function */
637 struct expression_statement_t {
638 statement_base_t base;
639 expression_t *expression;
642 struct while_statement_t {
643 statement_base_t base;
644 expression_t *condition;
648 struct do_while_statement_t {
649 statement_base_t base;
650 expression_t *condition;
654 struct for_statement_t {
655 statement_base_t base;
656 expression_t *initialisation;
657 expression_t *condition;
661 bool condition_reachable:1;
662 bool step_reachable:1;
665 struct asm_argument_t {
666 string_t constraints;
667 expression_t *expression;
669 asm_argument_t *next;
672 struct asm_clobber_t {
677 struct asm_statement_t {
678 statement_base_t base;
680 asm_argument_t *inputs;
681 asm_argument_t *outputs;
682 asm_clobber_t *clobbers;
686 struct ms_try_statement_t {
687 statement_base_t base;
688 statement_t *try_statement;
689 expression_t *except_expression; /**< non-null for except, NULL for finally */
690 statement_t *final_statement;
693 struct leave_statement_t {
694 statement_base_t base;
698 statement_kind_t kind;
699 statement_base_t base;
700 return_statement_t returns;
701 compound_statement_t compound;
702 declaration_statement_t declaration;
703 local_label_statement_t local_label;
705 switch_statement_t switchs;
706 goto_statement_t gotos;
707 case_label_statement_t case_label;
708 label_statement_t label;
709 expression_statement_t expression;
710 while_statement_t whiles;
711 do_while_statement_t do_while;
712 for_statement_t fors;
713 asm_statement_t asms;
714 ms_try_statement_t ms_try;
715 leave_statement_t leave;
718 struct translation_unit_t {
720 statement_t *global_asm;
724 void *_allocate_ast(size_t size)
726 return obstack_alloc(&ast_obstack, size);
730 bool is_invalid_expression(expression_t *expression)
732 return expression->base.kind == EXPR_INVALID;
736 bool is_invalid_statement(statement_t *statement)
738 return statement->base.kind == STATEMENT_INVALID;
742 #define allocate_ast(size) _allocate_ast(size)