2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 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 {
67 EXPR_REFERENCE_ENUM_VALUE,
70 EXPR_LITERAL_INTEGER_OCTAL,
71 EXPR_LITERAL_INTEGER_HEXADECIMAL,
72 EXPR_LITERAL_FLOATINGPOINT,
73 EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL,
74 EXPR_LITERAL_CHARACTER,
75 EXPR_LITERAL_WIDE_CHARACTER,
76 EXPR_LITERAL_MS_NOOP, /**< MS __noop extension */
78 EXPR_WIDE_STRING_LITERAL,
79 EXPR_COMPOUND_LITERAL,
89 EXPR_BUILTIN_CONSTANT_P,
90 EXPR_BUILTIN_TYPES_COMPATIBLE_P,
96 EXPR_LABEL_ADDRESS, /**< GCC extension &&label operator */
99 EXPR_UNARY_NEGATE = EXPR_UNARY_FIRST,
101 EXPR_UNARY_BITWISE_NEGATE,
103 EXPR_UNARY_DEREFERENCE,
104 EXPR_UNARY_TAKE_ADDRESS,
105 EXPR_UNARY_POSTFIX_INCREMENT,
106 EXPR_UNARY_POSTFIX_DECREMENT,
107 EXPR_UNARY_PREFIX_INCREMENT,
108 EXPR_UNARY_PREFIX_DECREMENT,
110 EXPR_UNARY_ASSUME, /**< MS __assume() */
112 EXPR_UNARY_DELETE_ARRAY,
114 EXPR_UNARY_LAST = EXPR_UNARY_THROW,
117 EXPR_BINARY_ADD = EXPR_BINARY_FIRST,
123 EXPR_BINARY_NOTEQUAL,
125 EXPR_BINARY_LESSEQUAL,
127 EXPR_BINARY_GREATEREQUAL,
128 EXPR_BINARY_BITWISE_AND,
129 EXPR_BINARY_BITWISE_OR,
130 EXPR_BINARY_BITWISE_XOR,
131 EXPR_BINARY_LOGICAL_AND,
132 EXPR_BINARY_LOGICAL_OR,
133 EXPR_BINARY_SHIFTLEFT,
134 EXPR_BINARY_SHIFTRIGHT,
136 EXPR_BINARY_MUL_ASSIGN,
137 EXPR_BINARY_DIV_ASSIGN,
138 EXPR_BINARY_MOD_ASSIGN,
139 EXPR_BINARY_ADD_ASSIGN,
140 EXPR_BINARY_SUB_ASSIGN,
141 EXPR_BINARY_SHIFTLEFT_ASSIGN,
142 EXPR_BINARY_SHIFTRIGHT_ASSIGN,
143 EXPR_BINARY_BITWISE_AND_ASSIGN,
144 EXPR_BINARY_BITWISE_XOR_ASSIGN,
145 EXPR_BINARY_BITWISE_OR_ASSIGN,
148 EXPR_BINARY_ISGREATER,
149 EXPR_BINARY_ISGREATEREQUAL,
151 EXPR_BINARY_ISLESSEQUAL,
152 EXPR_BINARY_ISLESSGREATER,
153 EXPR_BINARY_ISUNORDERED,
154 EXPR_BINARY_LAST = EXPR_BINARY_ISUNORDERED,
157 typedef enum funcname_kind_t {
158 FUNCNAME_FUNCTION, /**< C99 __func__, older __FUNCTION__ */
159 FUNCNAME_PRETTY_FUNCTION, /**< GNUC __PRETTY_FUNCTION__ */
160 FUNCNAME_FUNCSIG, /**< MS __FUNCSIG__ */
161 FUNCNAME_FUNCDNAME /**< MS __FUNCDNAME__ */
164 /* convenience macros */
165 #define EXPR_BINARY_CASES \
166 case EXPR_BINARY_ADD: \
167 case EXPR_BINARY_SUB: \
168 case EXPR_BINARY_MUL: \
169 case EXPR_BINARY_DIV: \
170 case EXPR_BINARY_MOD: \
171 case EXPR_BINARY_EQUAL: \
172 case EXPR_BINARY_NOTEQUAL: \
173 case EXPR_BINARY_LESS: \
174 case EXPR_BINARY_LESSEQUAL: \
175 case EXPR_BINARY_GREATER: \
176 case EXPR_BINARY_GREATEREQUAL: \
177 case EXPR_BINARY_BITWISE_AND: \
178 case EXPR_BINARY_BITWISE_OR: \
179 case EXPR_BINARY_BITWISE_XOR: \
180 case EXPR_BINARY_LOGICAL_AND: \
181 case EXPR_BINARY_LOGICAL_OR: \
182 case EXPR_BINARY_SHIFTLEFT: \
183 case EXPR_BINARY_SHIFTRIGHT: \
184 case EXPR_BINARY_ASSIGN: \
185 case EXPR_BINARY_MUL_ASSIGN: \
186 case EXPR_BINARY_DIV_ASSIGN: \
187 case EXPR_BINARY_MOD_ASSIGN: \
188 case EXPR_BINARY_ADD_ASSIGN: \
189 case EXPR_BINARY_SUB_ASSIGN: \
190 case EXPR_BINARY_SHIFTLEFT_ASSIGN: \
191 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: \
192 case EXPR_BINARY_BITWISE_AND_ASSIGN: \
193 case EXPR_BINARY_BITWISE_XOR_ASSIGN: \
194 case EXPR_BINARY_BITWISE_OR_ASSIGN: \
195 case EXPR_BINARY_COMMA: \
196 case EXPR_BINARY_ISGREATER: \
197 case EXPR_BINARY_ISGREATEREQUAL: \
198 case EXPR_BINARY_ISLESS: \
199 case EXPR_BINARY_ISLESSEQUAL: \
200 case EXPR_BINARY_ISLESSGREATER: \
201 case EXPR_BINARY_ISUNORDERED:
204 * unary expression with mandatory operand
206 #define EXPR_UNARY_CASES_MANDATORY \
207 case EXPR_UNARY_NEGATE: \
208 case EXPR_UNARY_PLUS: \
209 case EXPR_UNARY_BITWISE_NEGATE: \
210 case EXPR_UNARY_NOT: \
211 case EXPR_UNARY_DEREFERENCE: \
212 case EXPR_UNARY_TAKE_ADDRESS: \
213 case EXPR_UNARY_POSTFIX_INCREMENT: \
214 case EXPR_UNARY_POSTFIX_DECREMENT: \
215 case EXPR_UNARY_PREFIX_INCREMENT: \
216 case EXPR_UNARY_PREFIX_DECREMENT: \
217 case EXPR_UNARY_CAST: \
218 case EXPR_UNARY_ASSUME: \
219 case EXPR_UNARY_DELETE: \
220 case EXPR_UNARY_DELETE_ARRAY:
223 * unary expression with optional operand
225 #define EXPR_UNARY_CASES_OPTIONAL \
226 case EXPR_UNARY_THROW: \
228 #define EXPR_UNARY_CASES \
229 EXPR_UNARY_CASES_MANDATORY \
230 EXPR_UNARY_CASES_OPTIONAL
232 #define EXPR_LITERAL_CASES \
233 case EXPR_LITERAL_BOOLEAN: \
234 case EXPR_LITERAL_INTEGER: \
235 case EXPR_LITERAL_INTEGER_OCTAL: \
236 case EXPR_LITERAL_INTEGER_HEXADECIMAL: \
237 case EXPR_LITERAL_FLOATINGPOINT: \
238 case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: \
239 case EXPR_LITERAL_CHARACTER: \
240 case EXPR_LITERAL_WIDE_CHARACTER: \
241 case EXPR_LITERAL_MS_NOOP:
244 * The base class of every expression.
246 struct expression_base_t {
247 expression_kind_t kind; /**< The expression kind. */
248 type_t *type; /**< The type of the expression. */
249 source_position_t source_position; /**< The source position of this expression. */
250 bool parenthesized : 1;
252 bool transformed : 1; /**< Set if this expression was transformed. */
254 bool implicit : 1; /**< compiler generated expression.
256 select into anonymous structs
262 * integer/float constants, character and string literals
264 struct literal_expression_t {
265 expression_base_t base;
270 ir_tarval *target_value;
273 struct string_literal_expression_t {
274 expression_base_t base;
278 struct funcname_expression_t {
279 expression_base_t base;
280 funcname_kind_t kind;
281 string_t value; /**< the value once assigned. */
284 struct compound_literal_expression_t {
285 expression_base_t base;
287 initializer_t *initializer;
290 struct builtin_constant_expression_t {
291 expression_base_t base;
295 struct builtin_types_compatible_expression_t {
296 expression_base_t base;
301 struct reference_expression_t {
302 expression_base_t base;
307 * An argument of a call.
309 struct call_argument_t {
310 expression_t *expression; /**< The expression which value is transmitted. */
311 call_argument_t *next; /**< Links to the next argument of this call. */
315 struct call_expression_t {
316 expression_base_t base;
317 expression_t *function; /**< The address of the function to call. */
318 call_argument_t *arguments; /**< List of arguments of this call. */
322 struct unary_expression_t {
323 expression_base_t base;
324 expression_t *value; /**< The unary operand. */
327 struct binary_expression_t {
328 expression_base_t base;
333 struct select_expression_t {
334 expression_base_t base;
335 expression_t *compound;
336 entity_t *compound_entry;
339 struct array_access_expression_t {
340 expression_base_t base;
341 expression_t *array_ref; /**< the referenced array */
342 expression_t *index; /**< the index used */
343 bool flipped; /**< True if index/ref was written in a 5[a] way */
346 struct typeprop_expression_t {
347 expression_base_t base;
349 expression_t *tp_expression;
352 struct designator_t {
353 source_position_t source_position;
354 symbol_t *symbol; /**< the symbol if any */
355 expression_t *array_index; /**< the array index if any */
359 struct offsetof_expression_t {
360 expression_base_t base;
362 designator_t *designator;
365 struct va_start_expression_t {
366 expression_base_t base;
368 variable_t *parameter;
371 struct va_arg_expression_t {
372 expression_base_t base;
376 struct va_copy_expression_t {
377 expression_base_t base;
378 expression_t *dst; /**< destination argument */
379 expression_t *src; /**< source argument */
382 struct conditional_expression_t {
383 expression_base_t base;
384 expression_t *condition;
385 expression_t *true_expression;
386 expression_t *false_expression;
389 struct statement_expression_t {
390 expression_base_t base;
391 statement_t *statement;
394 struct classify_type_expression_t {
395 expression_base_t base;
396 expression_t *type_expression;
399 struct label_address_expression_t {
400 expression_base_t base;
405 expression_kind_t kind;
406 expression_base_t base;
407 literal_expression_t literal;
408 string_literal_expression_t string_literal;
409 funcname_expression_t funcname;
410 compound_literal_expression_t compound_literal;
411 builtin_constant_expression_t builtin_constant;
412 builtin_types_compatible_expression_t builtin_types_compatible;
413 reference_expression_t reference;
414 call_expression_t call;
415 unary_expression_t unary;
416 binary_expression_t binary;
417 select_expression_t select;
418 array_access_expression_t array_access;
419 typeprop_expression_t typeprop;
420 offsetof_expression_t offsetofe;
421 va_start_expression_t va_starte;
422 va_arg_expression_t va_arge;
423 va_copy_expression_t va_copye;
424 conditional_expression_t conditional;
425 statement_expression_t statement;
426 classify_type_expression_t classify_type;
427 label_address_expression_t label_address;
430 typedef enum initializer_kind_t {
434 INITIALIZER_WIDE_STRING,
435 INITIALIZER_DESIGNATOR
436 } initializer_kind_t;
438 struct initializer_base_t {
439 initializer_kind_t kind;
442 struct initializer_value_t {
443 initializer_base_t base;
447 struct initializer_list_t {
448 initializer_base_t base;
450 initializer_t *initializers[];
453 struct initializer_string_t {
454 initializer_base_t base;
458 struct initializer_wide_string_t {
459 initializer_base_t base;
463 struct initializer_designator_t {
464 initializer_base_t base;
465 designator_t *designator;
468 union initializer_t {
469 initializer_kind_t kind;
470 initializer_base_t base;
471 initializer_value_t value;
472 initializer_list_t list;
473 initializer_string_t string;
474 initializer_wide_string_t wide_string;
475 initializer_designator_t designator;
479 * The statement kinds.
481 typedef enum statement_kind_t {
486 STATEMENT_DECLARATION,
489 STATEMENT_EXPRESSION,
494 STATEMENT_CASE_LABEL,
499 STATEMENT_MS_TRY, /**< MS __try/__finally or __try/__except */
500 STATEMENT_LEAVE /**< MS __leave */
504 * The base class of every statement.
506 struct statement_base_t {
507 statement_kind_t kind;
508 statement_t *next; /**< Point to the next statement in a compound statement. */
509 source_position_t source_position;
510 statement_t *parent; /**< The Parent statement that controls the execution. */
511 bool reachable; /**< True, if this statement is reachable. */
517 struct return_statement_t {
518 statement_base_t base;
519 expression_t *value; /**< The return value if any. */
522 struct compound_statement_t {
523 statement_base_t base;
524 statement_t *statements;
526 bool stmt_expr; /**< True if this compound statement is a statement expression. */
529 struct declaration_statement_t {
530 statement_base_t base;
531 entity_t *declarations_begin;
532 entity_t *declarations_end;
535 struct if_statement_t {
536 statement_base_t base;
537 expression_t *condition;
538 statement_t *true_statement;
539 statement_t *false_statement;
542 struct switch_statement_t {
543 statement_base_t base;
544 expression_t *expression;
546 case_label_statement_t *first_case, *last_case; /**< List of all cases, including default. */
547 case_label_statement_t *default_label; /**< The default label if existent. */
548 unsigned long default_proj_nr; /**< The Proj-number for the default Proj. */
551 struct goto_statement_t {
552 statement_base_t base;
553 label_t *label; /**< The destination label. */
554 expression_t *expression; /**< The expression for an assigned goto. */
555 goto_statement_t *next; /**< links all goto statements of a function */
558 struct case_label_statement_t {
559 statement_base_t base;
560 expression_t *expression; /**< The case label expression, NULL for default label. */
561 expression_t *end_range; /**< For GNUC case a .. b: the end range expression, NULL else. */
562 case_label_statement_t *next; /**< link to the next case label in switch */
563 statement_t *statement;
564 long first_case; /**< The folded value of expression. */
565 long last_case; /**< The folded value of end_range. */
566 bool is_bad; /**< If set marked as bad to suppress warnings. */
567 bool is_empty_range; /**< If set marked this as an empty range. */
570 struct label_statement_t {
571 statement_base_t base;
573 statement_t *statement;
574 label_statement_t *next; /**< links all label statements of a function */
577 struct expression_statement_t {
578 statement_base_t base;
579 expression_t *expression;
582 struct while_statement_t {
583 statement_base_t base;
584 expression_t *condition;
588 struct do_while_statement_t {
589 statement_base_t base;
590 expression_t *condition;
594 struct for_statement_t {
595 statement_base_t base;
596 expression_t *initialisation;
597 expression_t *condition;
601 bool condition_reachable:1;
602 bool step_reachable:1;
605 struct asm_argument_t {
606 string_t constraints;
607 expression_t *expression;
609 asm_argument_t *next;
612 struct asm_clobber_t {
617 struct asm_statement_t {
618 statement_base_t base;
620 asm_argument_t *inputs;
621 asm_argument_t *outputs;
622 asm_clobber_t *clobbers;
626 struct ms_try_statement_t {
627 statement_base_t base;
628 statement_t *try_statement;
629 expression_t *except_expression; /**< non-null for except, NULL for finally */
630 statement_t *final_statement;
633 struct leave_statement_t {
634 statement_base_t base;
638 statement_kind_t kind;
639 statement_base_t base;
640 return_statement_t returns;
641 compound_statement_t compound;
642 declaration_statement_t declaration;
644 switch_statement_t switchs;
645 goto_statement_t gotos;
646 case_label_statement_t case_label;
647 label_statement_t label;
648 expression_statement_t expression;
649 while_statement_t whiles;
650 do_while_statement_t do_while;
651 for_statement_t fors;
652 asm_statement_t asms;
653 ms_try_statement_t ms_try;
654 leave_statement_t leave;
657 struct translation_unit_t {
659 statement_t *global_asm;
663 * Allocate an AST node with given size and
664 * initialize all fields with zero.
666 static inline void *allocate_ast_zero(size_t size)
668 return memset(obstack_alloc(&ast_obstack, size), 0, size);
671 /** If set, implicit casts are printed. */
672 extern bool print_implicit_casts;
673 /** If set parenthesis are printed to indicate operator precedence. */
674 extern bool print_parenthesis;