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
232 * A scope containing declarations.
235 entity_t *entities; /**< List of declarations in this scope. */
236 entity_t *last_entity; /**< last declaration in this scope. */
237 scope_t *parent; /**< points to the parent scope. */
238 unsigned depth; /**< while parsing, the depth of this scope in the scope stack. */
241 struct expression_base_t {
242 expression_kind_t kind;
244 source_position_t source_position;
250 struct const_expression_t {
251 expression_base_t base;
254 long double float_value;
256 wide_string_t wide_character;
258 bool is_ms_noop; /**< True, if this constant is the result
259 of an microsoft __noop operator */
262 struct string_literal_expression_t {
263 expression_base_t base;
267 struct funcname_expression_t {
268 expression_base_t base;
269 funcname_kind_t kind;
270 string_t value; /**< the value once assigned. */
273 struct wide_string_literal_expression_t {
274 expression_base_t base;
278 struct compound_literal_expression_t {
279 expression_base_t base;
281 initializer_t *initializer;
284 struct builtin_symbol_expression_t {
285 expression_base_t base;
289 struct builtin_constant_expression_t {
290 expression_base_t base;
294 struct builtin_prefetch_expression_t {
295 expression_base_t base;
298 expression_t *locality;
301 struct reference_expression_t {
302 expression_base_t base;
306 struct call_argument_t {
307 expression_t *expression;
308 call_argument_t *next;
311 struct call_expression_t {
312 expression_base_t base;
313 expression_t *function;
314 call_argument_t *arguments;
317 struct unary_expression_t {
318 expression_base_t base;
322 struct binary_expression_t {
323 expression_base_t base;
328 struct select_expression_t {
329 expression_base_t base;
330 expression_t *compound;
331 entity_t *compound_entry;
334 struct array_access_expression_t {
335 expression_base_t base;
336 expression_t *array_ref;
338 bool flipped; /**< index/ref was written in a 5[a] way */
341 struct typeprop_expression_t {
342 expression_base_t base;
344 expression_t *tp_expression;
347 struct designator_t {
348 source_position_t source_position;
350 expression_t *array_index;
354 struct offsetof_expression_t {
355 expression_base_t base;
357 designator_t *designator;
360 struct va_start_expression_t {
361 expression_base_t base;
363 variable_t *parameter;
366 struct va_arg_expression_t {
367 expression_base_t base;
371 struct conditional_expression_t {
372 expression_base_t base;
373 expression_t *condition;
374 expression_t *true_expression;
375 expression_t *false_expression;
378 struct statement_expression_t {
379 expression_base_t base;
380 statement_t *statement;
383 struct classify_type_expression_t {
384 expression_base_t base;
385 expression_t *type_expression;
388 struct label_address_expression_t {
389 expression_base_t base;
394 expression_kind_t kind;
395 expression_base_t base;
396 const_expression_t conste;
397 funcname_expression_t funcname;
398 string_literal_expression_t string;
399 wide_string_literal_expression_t wide_string;
400 compound_literal_expression_t compound_literal;
401 builtin_symbol_expression_t builtin_symbol;
402 builtin_constant_expression_t builtin_constant;
403 builtin_prefetch_expression_t builtin_prefetch;
404 reference_expression_t reference;
405 call_expression_t call;
406 unary_expression_t unary;
407 binary_expression_t binary;
408 select_expression_t select;
409 array_access_expression_t array_access;
410 typeprop_expression_t typeprop;
411 offsetof_expression_t offsetofe;
412 va_start_expression_t va_starte;
413 va_arg_expression_t va_arge;
414 conditional_expression_t conditional;
415 statement_expression_t statement;
416 classify_type_expression_t classify_type;
417 label_address_expression_t label_address;
420 typedef enum initializer_kind_t {
424 INITIALIZER_WIDE_STRING,
425 INITIALIZER_DESIGNATOR
426 } initializer_kind_t;
428 struct initializer_base_t {
429 initializer_kind_t kind;
432 struct initializer_value_t {
433 initializer_base_t base;
437 struct initializer_list_t {
438 initializer_base_t base;
440 initializer_t *initializers[];
443 struct initializer_string_t {
444 initializer_base_t base;
448 struct initializer_wide_string_t {
449 initializer_base_t base;
450 wide_string_t string;
453 struct initializer_designator_t {
454 initializer_base_t base;
455 designator_t *designator;
458 union initializer_t {
459 initializer_kind_t kind;
460 initializer_base_t base;
461 initializer_value_t value;
462 initializer_list_t list;
463 initializer_string_t string;
464 initializer_wide_string_t wide_string;
465 initializer_designator_t designator;
471 typedef enum gnu_attribute_kind_t {
482 GNU_AK_ALWAYS_INLINE,
488 GNU_AK_TRANSPARENT_UNION,
496 GNU_AK_NO_INSTRUMENT_FUNCTION,
497 GNU_AK_WARN_UNUSED_RESULT,
502 GNU_AK_FUNCTION_VECTOR,
504 GNU_AK_INTERRUPT_HANDLER,
510 GNU_AK_EIGTHBIT_DATA,
515 GNU_AK_EXTERNALLY_VISIBLE,
538 } gnu_attribute_kind_t;
540 typedef enum statement_kind_t {
545 STATEMENT_DECLARATION,
546 STATEMENT_LOCAL_LABEL,
549 STATEMENT_EXPRESSION,
554 STATEMENT_CASE_LABEL,
559 STATEMENT_MS_TRY, /**< MS __try/__finally or __try/__except */
560 STATEMENT_LEAVE /**< MS __leave */
563 struct statement_base_t {
564 statement_kind_t kind;
566 source_position_t source_position;
574 struct invalid_statement_t {
575 statement_base_t base;
578 struct empty_statement_t {
579 statement_base_t base;
582 struct return_statement_t {
583 statement_base_t base;
587 struct compound_statement_t {
588 statement_base_t base;
589 statement_t *statements;
593 struct declaration_statement_t {
594 statement_base_t base;
595 entity_t *declarations_begin;
596 entity_t *declarations_end;
599 struct local_label_statement_t {
600 statement_base_t base;
601 entity_t *labels_begin;
602 entity_t *labels_end;
605 struct if_statement_t {
606 statement_base_t base;
607 expression_t *condition;
608 statement_t *true_statement;
609 statement_t *false_statement;
612 struct switch_statement_t {
613 statement_base_t base;
614 expression_t *expression;
616 case_label_statement_t *first_case, *last_case; /**< List of all cases, including default. */
617 case_label_statement_t *default_label; /**< The default label if existent. */
618 unsigned long default_proj_nr; /**< The Proj-number for the default Proj. */
621 struct goto_statement_t {
622 statement_base_t base;
623 label_t *label; /**< The destination label. */
624 expression_t *expression; /**< The expression for an assigned goto. */
625 goto_statement_t *next; /**< links all goto statements of a function */
628 struct case_label_statement_t {
629 statement_base_t base;
630 expression_t *expression; /**< The case label expression, NULL for default label. */
631 expression_t *end_range; /**< For GNUC case a .. b: the end range expression, NULL else. */
632 case_label_statement_t *next; /**< link to the next case label in switch */
633 statement_t *statement;
634 long first_case; /**< The folded value of expression. */
635 long last_case; /**< The folded value of end_range. */
636 bool is_bad; /**< If set marked as bad to suppress warnings. */
637 bool is_empty_range; /**< If set marked this as an empty range. */
640 struct label_statement_t {
641 statement_base_t base;
643 statement_t *statement;
644 label_statement_t *next; /**< links all label statements of a function */
647 struct expression_statement_t {
648 statement_base_t base;
649 expression_t *expression;
652 struct while_statement_t {
653 statement_base_t base;
654 expression_t *condition;
658 struct do_while_statement_t {
659 statement_base_t base;
660 expression_t *condition;
664 struct for_statement_t {
665 statement_base_t base;
666 expression_t *initialisation;
667 expression_t *condition;
671 bool condition_reachable:1;
672 bool step_reachable:1;
675 struct asm_argument_t {
676 string_t constraints;
677 expression_t *expression;
679 asm_argument_t *next;
682 struct asm_clobber_t {
687 struct asm_statement_t {
688 statement_base_t base;
690 asm_argument_t *inputs;
691 asm_argument_t *outputs;
692 asm_clobber_t *clobbers;
696 struct ms_try_statement_t {
697 statement_base_t base;
698 statement_t *try_statement;
699 expression_t *except_expression; /**< non-null for except, NULL for finally */
700 statement_t *final_statement;
703 struct leave_statement_t {
704 statement_base_t base;
708 statement_kind_t kind;
709 statement_base_t base;
710 return_statement_t returns;
711 compound_statement_t compound;
712 declaration_statement_t declaration;
713 local_label_statement_t local_label;
715 switch_statement_t switchs;
716 goto_statement_t gotos;
717 case_label_statement_t case_label;
718 label_statement_t label;
719 expression_statement_t expression;
720 while_statement_t whiles;
721 do_while_statement_t do_while;
722 for_statement_t fors;
723 asm_statement_t asms;
724 ms_try_statement_t ms_try;
725 leave_statement_t leave;
728 struct translation_unit_t {
730 statement_t *global_asm;
734 void *_allocate_ast(size_t size)
736 return obstack_alloc(&ast_obstack, size);
740 bool is_invalid_expression(expression_t *expression)
742 return expression->base.kind == EXPR_INVALID;
746 bool is_invalid_statement(statement_t *statement)
748 return statement->base.kind == STATEMENT_INVALID;
752 #define allocate_ast(size) _allocate_ast(size)