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,
87 EXPR_BUILTIN_PREFETCH,
92 EXPR_LABEL_ADDRESS, /**< GCC extension &&label operator */
95 EXPR_UNARY_NEGATE = EXPR_UNARY_FIRST,
97 EXPR_UNARY_BITWISE_NEGATE,
99 EXPR_UNARY_DEREFERENCE,
100 EXPR_UNARY_TAKE_ADDRESS,
101 EXPR_UNARY_POSTFIX_INCREMENT,
102 EXPR_UNARY_POSTFIX_DECREMENT,
103 EXPR_UNARY_PREFIX_INCREMENT,
104 EXPR_UNARY_PREFIX_DECREMENT,
106 EXPR_UNARY_CAST_IMPLICIT, /**< compiler generated cast */
107 EXPR_UNARY_ASSUME, /**< MS __assume() */
109 EXPR_UNARY_DELETE_ARRAY,
111 EXPR_UNARY_LAST = EXPR_UNARY_THROW,
114 EXPR_BINARY_ADD = EXPR_BINARY_FIRST,
120 EXPR_BINARY_NOTEQUAL,
122 EXPR_BINARY_LESSEQUAL,
124 EXPR_BINARY_GREATEREQUAL,
125 EXPR_BINARY_BITWISE_AND,
126 EXPR_BINARY_BITWISE_OR,
127 EXPR_BINARY_BITWISE_XOR,
128 EXPR_BINARY_LOGICAL_AND,
129 EXPR_BINARY_LOGICAL_OR,
130 EXPR_BINARY_SHIFTLEFT,
131 EXPR_BINARY_SHIFTRIGHT,
133 EXPR_BINARY_MUL_ASSIGN,
134 EXPR_BINARY_DIV_ASSIGN,
135 EXPR_BINARY_MOD_ASSIGN,
136 EXPR_BINARY_ADD_ASSIGN,
137 EXPR_BINARY_SUB_ASSIGN,
138 EXPR_BINARY_SHIFTLEFT_ASSIGN,
139 EXPR_BINARY_SHIFTRIGHT_ASSIGN,
140 EXPR_BINARY_BITWISE_AND_ASSIGN,
141 EXPR_BINARY_BITWISE_XOR_ASSIGN,
142 EXPR_BINARY_BITWISE_OR_ASSIGN,
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_ISGREATER: \
194 case EXPR_BINARY_ISGREATEREQUAL: \
195 case EXPR_BINARY_ISLESS: \
196 case EXPR_BINARY_ISLESSEQUAL: \
197 case EXPR_BINARY_ISLESSGREATER: \
198 case EXPR_BINARY_ISUNORDERED:
201 * unary expression with mandatory operand
203 #define EXPR_UNARY_CASES_MANDATORY \
204 case EXPR_UNARY_NEGATE: \
205 case EXPR_UNARY_PLUS: \
206 case EXPR_UNARY_BITWISE_NEGATE: \
207 case EXPR_UNARY_NOT: \
208 case EXPR_UNARY_DEREFERENCE: \
209 case EXPR_UNARY_TAKE_ADDRESS: \
210 case EXPR_UNARY_POSTFIX_INCREMENT: \
211 case EXPR_UNARY_POSTFIX_DECREMENT: \
212 case EXPR_UNARY_PREFIX_INCREMENT: \
213 case EXPR_UNARY_PREFIX_DECREMENT: \
214 case EXPR_UNARY_CAST: \
215 case EXPR_UNARY_CAST_IMPLICIT: \
216 case EXPR_UNARY_ASSUME: \
217 case EXPR_UNARY_DELETE: \
218 case EXPR_UNARY_DELETE_ARRAY:
221 * unary expression with optional operand
223 #define EXPR_UNARY_CASES_OPTIONAL \
224 case EXPR_UNARY_THROW: \
226 #define EXPR_UNARY_CASES \
227 EXPR_UNARY_CASES_MANDATORY \
228 EXPR_UNARY_CASES_OPTIONAL
230 struct expression_base_t {
231 expression_kind_t kind;
233 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 typedef enum buitin_address_kind {
285 builtin_return_address,
286 builtin_frame_address
287 } builtin_address_kind;
289 struct builtin_address_expression_t {
290 expression_base_t base;
291 builtin_address_kind kind;
295 struct builtin_prefetch_expression_t {
296 expression_base_t base;
299 expression_t *locality;
302 struct reference_expression_t {
303 expression_base_t base;
307 struct call_argument_t {
308 expression_t *expression;
309 call_argument_t *next;
312 struct call_expression_t {
313 expression_base_t base;
314 expression_t *function;
315 call_argument_t *arguments;
318 struct unary_expression_t {
319 expression_base_t base;
323 struct binary_expression_t {
324 expression_base_t base;
329 struct select_expression_t {
330 expression_base_t base;
331 expression_t *compound;
332 entity_t *compound_entry;
335 struct array_access_expression_t {
336 expression_base_t base;
337 expression_t *array_ref;
339 bool flipped; /**< index/ref was written in a 5[a] way */
342 struct typeprop_expression_t {
343 expression_base_t base;
345 expression_t *tp_expression;
348 struct designator_t {
349 source_position_t source_position;
351 expression_t *array_index;
355 struct offsetof_expression_t {
356 expression_base_t base;
358 designator_t *designator;
361 struct va_start_expression_t {
362 expression_base_t base;
364 variable_t *parameter;
367 struct va_arg_expression_t {
368 expression_base_t base;
372 struct conditional_expression_t {
373 expression_base_t base;
374 expression_t *condition;
375 expression_t *true_expression;
376 expression_t *false_expression;
379 struct statement_expression_t {
380 expression_base_t base;
381 statement_t *statement;
384 struct classify_type_expression_t {
385 expression_base_t base;
386 expression_t *type_expression;
389 struct label_address_expression_t {
390 expression_base_t base;
395 expression_kind_t kind;
396 expression_base_t base;
397 const_expression_t conste;
398 funcname_expression_t funcname;
399 string_literal_expression_t string;
400 wide_string_literal_expression_t wide_string;
401 compound_literal_expression_t compound_literal;
402 builtin_symbol_expression_t builtin_symbol;
403 builtin_constant_expression_t builtin_constant;
404 builtin_address_expression_t builtin_address;
405 builtin_prefetch_expression_t builtin_prefetch;
406 reference_expression_t reference;
407 call_expression_t call;
408 unary_expression_t unary;
409 binary_expression_t binary;
410 select_expression_t select;
411 array_access_expression_t array_access;
412 typeprop_expression_t typeprop;
413 offsetof_expression_t offsetofe;
414 va_start_expression_t va_starte;
415 va_arg_expression_t va_arge;
416 conditional_expression_t conditional;
417 statement_expression_t statement;
418 classify_type_expression_t classify_type;
419 label_address_expression_t label_address;
422 typedef enum initializer_kind_t {
426 INITIALIZER_WIDE_STRING,
427 INITIALIZER_DESIGNATOR
428 } initializer_kind_t;
430 struct initializer_base_t {
431 initializer_kind_t kind;
434 struct initializer_value_t {
435 initializer_base_t base;
439 struct initializer_list_t {
440 initializer_base_t base;
442 initializer_t *initializers[];
445 struct initializer_string_t {
446 initializer_base_t base;
450 struct initializer_wide_string_t {
451 initializer_base_t base;
452 wide_string_t string;
455 struct initializer_designator_t {
456 initializer_base_t base;
457 designator_t *designator;
460 union initializer_t {
461 initializer_kind_t kind;
462 initializer_base_t base;
463 initializer_value_t value;
464 initializer_list_t list;
465 initializer_string_t string;
466 initializer_wide_string_t wide_string;
467 initializer_designator_t designator;
473 typedef enum gnu_attribute_kind_t {
481 GNU_AK_RETURNS_TWICE,
485 GNU_AK_ALWAYS_INLINE,
491 GNU_AK_TRANSPARENT_UNION,
499 GNU_AK_NO_INSTRUMENT_FUNCTION,
500 GNU_AK_WARN_UNUSED_RESULT,
505 GNU_AK_FUNCTION_VECTOR,
507 GNU_AK_INTERRUPT_HANDLER,
513 GNU_AK_EIGTHBIT_DATA,
518 GNU_AK_EXTERNALLY_VISIBLE,
541 } gnu_attribute_kind_t;
543 typedef enum statement_kind_t {
548 STATEMENT_DECLARATION,
551 STATEMENT_EXPRESSION,
556 STATEMENT_CASE_LABEL,
561 STATEMENT_MS_TRY, /**< MS __try/__finally or __try/__except */
562 STATEMENT_LEAVE /**< MS __leave */
565 struct statement_base_t {
566 statement_kind_t kind;
568 source_position_t source_position;
576 struct invalid_statement_t {
577 statement_base_t base;
580 struct empty_statement_t {
581 statement_base_t base;
584 struct return_statement_t {
585 statement_base_t base;
589 struct compound_statement_t {
590 statement_base_t base;
591 statement_t *statements;
593 bool stmt_expr; /* The compound statement is a statement expression */
596 struct declaration_statement_t {
597 statement_base_t base;
598 entity_t *declarations_begin;
599 entity_t *declarations_end;
602 struct if_statement_t {
603 statement_base_t base;
604 expression_t *condition;
605 statement_t *true_statement;
606 statement_t *false_statement;
609 struct switch_statement_t {
610 statement_base_t base;
611 expression_t *expression;
613 case_label_statement_t *first_case, *last_case; /**< List of all cases, including default. */
614 case_label_statement_t *default_label; /**< The default label if existent. */
615 unsigned long default_proj_nr; /**< The Proj-number for the default Proj. */
618 struct goto_statement_t {
619 statement_base_t base;
620 label_t *label; /**< The destination label. */
621 expression_t *expression; /**< The expression for an assigned goto. */
622 goto_statement_t *next; /**< links all goto statements of a function */
625 struct case_label_statement_t {
626 statement_base_t base;
627 expression_t *expression; /**< The case label expression, NULL for default label. */
628 expression_t *end_range; /**< For GNUC case a .. b: the end range expression, NULL else. */
629 case_label_statement_t *next; /**< link to the next case label in switch */
630 statement_t *statement;
631 long first_case; /**< The folded value of expression. */
632 long last_case; /**< The folded value of end_range. */
633 bool is_bad; /**< If set marked as bad to suppress warnings. */
634 bool is_empty_range; /**< If set marked this as an empty range. */
637 struct label_statement_t {
638 statement_base_t base;
640 statement_t *statement;
641 label_statement_t *next; /**< links all label statements of a function */
644 struct expression_statement_t {
645 statement_base_t base;
646 expression_t *expression;
649 struct while_statement_t {
650 statement_base_t base;
651 expression_t *condition;
655 struct do_while_statement_t {
656 statement_base_t base;
657 expression_t *condition;
661 struct for_statement_t {
662 statement_base_t base;
663 expression_t *initialisation;
664 expression_t *condition;
668 bool condition_reachable:1;
669 bool step_reachable:1;
672 struct asm_argument_t {
673 string_t constraints;
674 expression_t *expression;
676 asm_argument_t *next;
679 struct asm_clobber_t {
684 struct asm_statement_t {
685 statement_base_t base;
687 asm_argument_t *inputs;
688 asm_argument_t *outputs;
689 asm_clobber_t *clobbers;
693 struct ms_try_statement_t {
694 statement_base_t base;
695 statement_t *try_statement;
696 expression_t *except_expression; /**< non-null for except, NULL for finally */
697 statement_t *final_statement;
700 struct leave_statement_t {
701 statement_base_t base;
705 statement_kind_t kind;
706 statement_base_t base;
707 return_statement_t returns;
708 compound_statement_t compound;
709 declaration_statement_t declaration;
711 switch_statement_t switchs;
712 goto_statement_t gotos;
713 case_label_statement_t case_label;
714 label_statement_t label;
715 expression_statement_t expression;
716 while_statement_t whiles;
717 do_while_statement_t do_while;
718 for_statement_t fors;
719 asm_statement_t asms;
720 ms_try_statement_t ms_try;
721 leave_statement_t leave;
724 struct translation_unit_t {
726 statement_t *global_asm;
730 void *_allocate_ast(size_t size)
732 return obstack_alloc(&ast_obstack, size);
736 bool is_invalid_expression(expression_t *expression)
738 return expression->base.kind == EXPR_INVALID;
742 bool is_invalid_statement(statement_t *statement)
744 return statement->base.kind == STATEMENT_INVALID;
748 #define allocate_ast(size) _allocate_ast(size)