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,
84 EXPR_BUILTIN_CONSTANT_P,
85 EXPR_BUILTIN_TYPES_COMPATIBLE_P,
90 EXPR_LABEL_ADDRESS, /**< GCC extension &&label operator */
93 EXPR_UNARY_NEGATE = EXPR_UNARY_FIRST,
95 EXPR_UNARY_BITWISE_NEGATE,
97 EXPR_UNARY_DEREFERENCE,
98 EXPR_UNARY_TAKE_ADDRESS,
99 EXPR_UNARY_POSTFIX_INCREMENT,
100 EXPR_UNARY_POSTFIX_DECREMENT,
101 EXPR_UNARY_PREFIX_INCREMENT,
102 EXPR_UNARY_PREFIX_DECREMENT,
104 EXPR_UNARY_CAST_IMPLICIT, /**< compiler generated cast */
105 EXPR_UNARY_ASSUME, /**< MS __assume() */
107 EXPR_UNARY_DELETE_ARRAY,
109 EXPR_UNARY_LAST = EXPR_UNARY_THROW,
112 EXPR_BINARY_ADD = EXPR_BINARY_FIRST,
118 EXPR_BINARY_NOTEQUAL,
120 EXPR_BINARY_LESSEQUAL,
122 EXPR_BINARY_GREATEREQUAL,
123 EXPR_BINARY_BITWISE_AND,
124 EXPR_BINARY_BITWISE_OR,
125 EXPR_BINARY_BITWISE_XOR,
126 EXPR_BINARY_LOGICAL_AND,
127 EXPR_BINARY_LOGICAL_OR,
128 EXPR_BINARY_SHIFTLEFT,
129 EXPR_BINARY_SHIFTRIGHT,
131 EXPR_BINARY_MUL_ASSIGN,
132 EXPR_BINARY_DIV_ASSIGN,
133 EXPR_BINARY_MOD_ASSIGN,
134 EXPR_BINARY_ADD_ASSIGN,
135 EXPR_BINARY_SUB_ASSIGN,
136 EXPR_BINARY_SHIFTLEFT_ASSIGN,
137 EXPR_BINARY_SHIFTRIGHT_ASSIGN,
138 EXPR_BINARY_BITWISE_AND_ASSIGN,
139 EXPR_BINARY_BITWISE_XOR_ASSIGN,
140 EXPR_BINARY_BITWISE_OR_ASSIGN,
143 EXPR_BINARY_ISGREATER,
144 EXPR_BINARY_ISGREATEREQUAL,
146 EXPR_BINARY_ISLESSEQUAL,
147 EXPR_BINARY_ISLESSGREATER,
148 EXPR_BINARY_ISUNORDERED,
149 EXPR_BINARY_LAST = EXPR_BINARY_ISUNORDERED,
152 typedef enum funcname_kind_t {
153 FUNCNAME_FUNCTION, /**< C99 __func__, older __FUNCTION__ */
154 FUNCNAME_PRETTY_FUNCTION, /**< GNUC __PRETTY_FUNCTION__ */
155 FUNCNAME_FUNCSIG, /**< MS __FUNCSIG__ */
156 FUNCNAME_FUNCDNAME /**< MS __FUNCDNAME__ */
159 /* convenience macros */
160 #define EXPR_BINARY_CASES \
161 case EXPR_BINARY_ADD: \
162 case EXPR_BINARY_SUB: \
163 case EXPR_BINARY_MUL: \
164 case EXPR_BINARY_DIV: \
165 case EXPR_BINARY_MOD: \
166 case EXPR_BINARY_EQUAL: \
167 case EXPR_BINARY_NOTEQUAL: \
168 case EXPR_BINARY_LESS: \
169 case EXPR_BINARY_LESSEQUAL: \
170 case EXPR_BINARY_GREATER: \
171 case EXPR_BINARY_GREATEREQUAL: \
172 case EXPR_BINARY_BITWISE_AND: \
173 case EXPR_BINARY_BITWISE_OR: \
174 case EXPR_BINARY_BITWISE_XOR: \
175 case EXPR_BINARY_LOGICAL_AND: \
176 case EXPR_BINARY_LOGICAL_OR: \
177 case EXPR_BINARY_SHIFTLEFT: \
178 case EXPR_BINARY_SHIFTRIGHT: \
179 case EXPR_BINARY_ASSIGN: \
180 case EXPR_BINARY_MUL_ASSIGN: \
181 case EXPR_BINARY_DIV_ASSIGN: \
182 case EXPR_BINARY_MOD_ASSIGN: \
183 case EXPR_BINARY_ADD_ASSIGN: \
184 case EXPR_BINARY_SUB_ASSIGN: \
185 case EXPR_BINARY_SHIFTLEFT_ASSIGN: \
186 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: \
187 case EXPR_BINARY_BITWISE_AND_ASSIGN: \
188 case EXPR_BINARY_BITWISE_XOR_ASSIGN: \
189 case EXPR_BINARY_BITWISE_OR_ASSIGN: \
190 case EXPR_BINARY_COMMA: \
191 case EXPR_BINARY_ISGREATER: \
192 case EXPR_BINARY_ISGREATEREQUAL: \
193 case EXPR_BINARY_ISLESS: \
194 case EXPR_BINARY_ISLESSEQUAL: \
195 case EXPR_BINARY_ISLESSGREATER: \
196 case EXPR_BINARY_ISUNORDERED:
199 * unary expression with mandatory operand
201 #define EXPR_UNARY_CASES_MANDATORY \
202 case EXPR_UNARY_NEGATE: \
203 case EXPR_UNARY_PLUS: \
204 case EXPR_UNARY_BITWISE_NEGATE: \
205 case EXPR_UNARY_NOT: \
206 case EXPR_UNARY_DEREFERENCE: \
207 case EXPR_UNARY_TAKE_ADDRESS: \
208 case EXPR_UNARY_POSTFIX_INCREMENT: \
209 case EXPR_UNARY_POSTFIX_DECREMENT: \
210 case EXPR_UNARY_PREFIX_INCREMENT: \
211 case EXPR_UNARY_PREFIX_DECREMENT: \
212 case EXPR_UNARY_CAST: \
213 case EXPR_UNARY_CAST_IMPLICIT: \
214 case EXPR_UNARY_ASSUME: \
215 case EXPR_UNARY_DELETE: \
216 case EXPR_UNARY_DELETE_ARRAY:
219 * unary expression with optional operand
221 #define EXPR_UNARY_CASES_OPTIONAL \
222 case EXPR_UNARY_THROW: \
224 #define EXPR_UNARY_CASES \
225 EXPR_UNARY_CASES_MANDATORY \
226 EXPR_UNARY_CASES_OPTIONAL
229 * The base class of every expression.
231 struct expression_base_t {
232 expression_kind_t kind; /**< The expression kind. */
233 type_t *type; /**< The type of the expression. */
234 source_position_t source_position; /**< The source position of this expression. */
237 bool transformed; /**< Set if this expression was transformed. */
241 struct const_expression_t {
242 expression_base_t base;
245 long double float_value;
247 wide_string_t wide_character;
249 bool is_ms_noop; /**< True, if this constant is the result
250 of an microsoft __noop operator */
253 struct string_literal_expression_t {
254 expression_base_t base;
258 struct funcname_expression_t {
259 expression_base_t base;
260 funcname_kind_t kind;
261 string_t value; /**< the value once assigned. */
264 struct wide_string_literal_expression_t {
265 expression_base_t base;
269 struct compound_literal_expression_t {
270 expression_base_t base;
272 initializer_t *initializer;
275 struct builtin_constant_expression_t {
276 expression_base_t base;
280 struct builtin_types_compatible_expression_t {
281 expression_base_t base;
286 struct reference_expression_t {
287 expression_base_t base;
291 struct call_argument_t {
292 expression_t *expression;
293 call_argument_t *next;
296 struct call_expression_t {
297 expression_base_t base;
298 expression_t *function;
299 call_argument_t *arguments;
302 struct unary_expression_t {
303 expression_base_t base;
307 struct binary_expression_t {
308 expression_base_t base;
313 struct select_expression_t {
314 expression_base_t base;
315 expression_t *compound;
316 entity_t *compound_entry;
319 struct array_access_expression_t {
320 expression_base_t base;
321 expression_t *array_ref;
323 bool flipped; /**< index/ref was written in a 5[a] way */
326 struct typeprop_expression_t {
327 expression_base_t base;
329 expression_t *tp_expression;
332 struct designator_t {
333 source_position_t source_position;
335 expression_t *array_index;
339 struct offsetof_expression_t {
340 expression_base_t base;
342 designator_t *designator;
345 struct va_start_expression_t {
346 expression_base_t base;
348 variable_t *parameter;
351 struct va_arg_expression_t {
352 expression_base_t base;
356 struct conditional_expression_t {
357 expression_base_t base;
358 expression_t *condition;
359 expression_t *true_expression;
360 expression_t *false_expression;
363 struct statement_expression_t {
364 expression_base_t base;
365 statement_t *statement;
368 struct classify_type_expression_t {
369 expression_base_t base;
370 expression_t *type_expression;
373 struct label_address_expression_t {
374 expression_base_t base;
379 expression_kind_t kind;
380 expression_base_t base;
381 const_expression_t conste;
382 funcname_expression_t funcname;
383 string_literal_expression_t string;
384 wide_string_literal_expression_t wide_string;
385 compound_literal_expression_t compound_literal;
386 builtin_constant_expression_t builtin_constant;
387 builtin_types_compatible_expression_t builtin_types_compatible;
388 reference_expression_t reference;
389 call_expression_t call;
390 unary_expression_t unary;
391 binary_expression_t binary;
392 select_expression_t select;
393 array_access_expression_t array_access;
394 typeprop_expression_t typeprop;
395 offsetof_expression_t offsetofe;
396 va_start_expression_t va_starte;
397 va_arg_expression_t va_arge;
398 conditional_expression_t conditional;
399 statement_expression_t statement;
400 classify_type_expression_t classify_type;
401 label_address_expression_t label_address;
404 typedef enum initializer_kind_t {
408 INITIALIZER_WIDE_STRING,
409 INITIALIZER_DESIGNATOR
410 } initializer_kind_t;
412 struct initializer_base_t {
413 initializer_kind_t kind;
416 struct initializer_value_t {
417 initializer_base_t base;
421 struct initializer_list_t {
422 initializer_base_t base;
424 initializer_t *initializers[];
427 struct initializer_string_t {
428 initializer_base_t base;
432 struct initializer_wide_string_t {
433 initializer_base_t base;
434 wide_string_t string;
437 struct initializer_designator_t {
438 initializer_base_t base;
439 designator_t *designator;
442 union initializer_t {
443 initializer_kind_t kind;
444 initializer_base_t base;
445 initializer_value_t value;
446 initializer_list_t list;
447 initializer_string_t string;
448 initializer_wide_string_t wide_string;
449 initializer_designator_t designator;
455 typedef enum gnu_attribute_kind_t {
463 GNU_AK_RETURNS_TWICE,
467 GNU_AK_ALWAYS_INLINE,
473 GNU_AK_TRANSPARENT_UNION,
481 GNU_AK_NO_INSTRUMENT_FUNCTION,
482 GNU_AK_WARN_UNUSED_RESULT,
487 GNU_AK_FUNCTION_VECTOR,
489 GNU_AK_INTERRUPT_HANDLER,
495 GNU_AK_EIGTHBIT_DATA,
500 GNU_AK_EXTERNALLY_VISIBLE,
523 } gnu_attribute_kind_t;
526 * The statement kinds.
528 typedef enum statement_kind_t {
533 STATEMENT_DECLARATION,
536 STATEMENT_EXPRESSION,
541 STATEMENT_CASE_LABEL,
546 STATEMENT_MS_TRY, /**< MS __try/__finally or __try/__except */
547 STATEMENT_LEAVE /**< MS __leave */
551 * The base class of every statement.
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;
581 bool stmt_expr; /* The compound statement is a statement expression */
584 struct declaration_statement_t {
585 statement_base_t base;
586 entity_t *declarations_begin;
587 entity_t *declarations_end;
590 struct if_statement_t {
591 statement_base_t base;
592 expression_t *condition;
593 statement_t *true_statement;
594 statement_t *false_statement;
597 struct switch_statement_t {
598 statement_base_t base;
599 expression_t *expression;
601 case_label_statement_t *first_case, *last_case; /**< List of all cases, including default. */
602 case_label_statement_t *default_label; /**< The default label if existent. */
603 unsigned long default_proj_nr; /**< The Proj-number for the default Proj. */
606 struct goto_statement_t {
607 statement_base_t base;
608 label_t *label; /**< The destination label. */
609 expression_t *expression; /**< The expression for an assigned goto. */
610 goto_statement_t *next; /**< links all goto statements of a function */
613 struct case_label_statement_t {
614 statement_base_t base;
615 expression_t *expression; /**< The case label expression, NULL for default label. */
616 expression_t *end_range; /**< For GNUC case a .. b: the end range expression, NULL else. */
617 case_label_statement_t *next; /**< link to the next case label in switch */
618 statement_t *statement;
619 long first_case; /**< The folded value of expression. */
620 long last_case; /**< The folded value of end_range. */
621 bool is_bad; /**< If set marked as bad to suppress warnings. */
622 bool is_empty_range; /**< If set marked this as an empty range. */
625 struct label_statement_t {
626 statement_base_t base;
628 statement_t *statement;
629 label_statement_t *next; /**< links all label statements of a function */
632 struct expression_statement_t {
633 statement_base_t base;
634 expression_t *expression;
637 struct while_statement_t {
638 statement_base_t base;
639 expression_t *condition;
643 struct do_while_statement_t {
644 statement_base_t base;
645 expression_t *condition;
649 struct for_statement_t {
650 statement_base_t base;
651 expression_t *initialisation;
652 expression_t *condition;
656 bool condition_reachable:1;
657 bool step_reachable:1;
660 struct asm_argument_t {
661 string_t constraints;
662 expression_t *expression;
664 asm_argument_t *next;
667 struct asm_clobber_t {
672 struct asm_statement_t {
673 statement_base_t base;
675 asm_argument_t *inputs;
676 asm_argument_t *outputs;
677 asm_clobber_t *clobbers;
681 struct ms_try_statement_t {
682 statement_base_t base;
683 statement_t *try_statement;
684 expression_t *except_expression; /**< non-null for except, NULL for finally */
685 statement_t *final_statement;
688 struct leave_statement_t {
689 statement_base_t base;
693 statement_kind_t kind;
694 statement_base_t base;
695 return_statement_t returns;
696 compound_statement_t compound;
697 declaration_statement_t declaration;
699 switch_statement_t switchs;
700 goto_statement_t gotos;
701 case_label_statement_t case_label;
702 label_statement_t label;
703 expression_statement_t expression;
704 while_statement_t whiles;
705 do_while_statement_t do_while;
706 for_statement_t fors;
707 asm_statement_t asms;
708 ms_try_statement_t ms_try;
709 leave_statement_t leave;
712 struct translation_unit_t {
714 statement_t *global_asm;
718 void *_allocate_ast(size_t size)
720 return obstack_alloc(&ast_obstack, size);
724 bool is_invalid_expression(expression_t *expression)
726 return expression->base.kind == EXPR_INVALID;
730 bool is_invalid_statement(statement_t *statement)
732 return statement->base.kind == STATEMENT_INVALID;
736 #define allocate_ast(size) _allocate_ast(size)