9 static struct obstack _type_obst;
10 struct obstack *type_obst = &_type_obst;
12 static int type_visited = 0;
13 static bool print_compound_entries;
15 static void intern_print_type_pre(type_t *type);
16 static void intern_print_type_post(type_t *type);
20 obstack_init(type_obst);
25 obstack_free(type_obst, NULL);
28 void type_set_output(FILE *stream)
33 void set_print_compound_entries(bool enabled)
35 print_compound_entries = enabled;
38 void inc_type_visited(void)
43 void print_type_qualifiers(type_qualifiers_t qualifiers)
45 if(qualifiers & TYPE_QUALIFIER_CONST) fputs("const ", out);
46 if(qualifiers & TYPE_QUALIFIER_VOLATILE) fputs("volatile ", out);
47 if(qualifiers & TYPE_QUALIFIER_RESTRICT) fputs("restrict ", out);
51 void print_atomic_type(const atomic_type_t *type)
53 print_type_qualifiers(type->type.qualifiers);
57 case ATOMIC_TYPE_INVALID: s = "INVALIDATOMIC"; break;
58 case ATOMIC_TYPE_VOID: s = "void"; break;
59 case ATOMIC_TYPE_BOOL: s = "_Bool"; break;
60 case ATOMIC_TYPE_CHAR: s = "char"; break;
61 case ATOMIC_TYPE_SCHAR: s = "signed char"; break;
62 case ATOMIC_TYPE_UCHAR: s = "unsigned char"; break;
63 case ATOMIC_TYPE_INT: s = "int"; break;
64 case ATOMIC_TYPE_UINT: s = "unsigned int"; break;
65 case ATOMIC_TYPE_SHORT: s = "short"; break;
66 case ATOMIC_TYPE_USHORT: s = "unsigned short"; break;
67 case ATOMIC_TYPE_LONG: s = "long"; break;
68 case ATOMIC_TYPE_ULONG: s = "unsigned long"; break;
69 case ATOMIC_TYPE_LONGLONG: s = "long long"; break;
70 case ATOMIC_TYPE_ULONGLONG: s = "unsigned long long"; break;
71 case ATOMIC_TYPE_LONG_DOUBLE: s = "long double"; break;
72 case ATOMIC_TYPE_FLOAT: s = "float"; break;
73 case ATOMIC_TYPE_DOUBLE: s = "double"; break;
74 default: s = "UNKNOWNATOMIC"; break;
79 static void print_function_type_pre(const function_type_t *type)
81 print_type_qualifiers(type->type.qualifiers);
83 intern_print_type_pre(type->result_type);
85 /* TODO: don't emit braces if we're the toplevel type... */
89 static void print_function_type_post(const function_type_t *type,
90 const context_t *context)
92 /* TODO: don't emit braces if we're the toplevel type... */
93 intern_print_type_post(type->result_type);
100 function_parameter_t *parameter = type->parameters;
101 for( ; parameter != NULL; parameter = parameter->next) {
107 print_type(parameter->type);
110 declaration_t *parameter = context->declarations;
111 for( ; parameter != NULL; parameter = parameter->next) {
117 print_type_ext(parameter->type, parameter->symbol,
118 ¶meter->context);
129 if(first && !type->unspecified_parameters) {
135 static void print_pointer_type_pre(const pointer_type_t *type)
137 intern_print_type_pre(type->points_to);
139 print_type_qualifiers(type->type.qualifiers);
142 static void print_pointer_type_post(const pointer_type_t *type)
144 intern_print_type_post(type->points_to);
147 static void print_array_type_pre(const array_type_t *type)
149 intern_print_type_pre(type->element_type);
152 static void print_array_type_post(const array_type_t *type)
155 if(type->is_static) {
156 fputs("static ", out);
158 print_type_qualifiers(type->type.qualifiers);
159 if(type->size != NULL) {
160 print_expression(type->size);
163 intern_print_type_post(type->element_type);
166 void print_enum_definition(const declaration_t *declaration)
172 declaration_t *entry = declaration->next;
173 for( ; entry != NULL && entry->storage_class == STORAGE_CLASS_ENUM_ENTRY;
174 entry = entry->next) {
177 fprintf(out, "%s", entry->symbol->string);
178 if(entry->init.initializer != NULL) {
180 print_expression(entry->init.enum_value);
190 static void print_type_enum(const enum_type_t *type)
192 print_type_qualifiers(type->type.qualifiers);
195 declaration_t *declaration = type->declaration;
196 symbol_t *symbol = declaration->symbol;
198 fputs(symbol->string, out);
200 print_enum_definition(declaration);
204 void print_compound_definition(const declaration_t *declaration)
209 declaration_t *iter = declaration->context.declarations;
210 for( ; iter != NULL; iter = iter->next) {
212 print_declaration(iter);
221 static void print_compound_type(const compound_type_t *type)
223 print_type_qualifiers(type->type.qualifiers);
225 if(type->type.type == TYPE_COMPOUND_STRUCT) {
226 fputs("struct ", out);
228 assert(type->type.type == TYPE_COMPOUND_UNION);
229 fputs("union ", out);
232 declaration_t *declaration = type->declaration;
233 symbol_t *symbol = declaration->symbol;
235 fputs(symbol->string, out);
237 print_compound_definition(declaration);
241 static void print_typedef_type_pre(typedef_type_t *type)
243 fputs(type->declaration->symbol->string, out);
246 static void print_typeof_type_pre(typeof_type_t *type)
248 fputs("typeof(", out);
249 if(type->expression != NULL) {
250 assert(type->typeof_type == NULL);
251 print_expression(type->expression);
253 print_type(type->typeof_type);
258 static void intern_print_type_pre(type_t *type)
263 fputs("invalid", out);
266 print_type_enum(&type->enumt);
269 print_atomic_type(&type->atomic);
271 case TYPE_COMPOUND_STRUCT:
272 case TYPE_COMPOUND_UNION:
273 print_compound_type(&type->compound);
276 fputs(type->builtin.symbol->string, out);
279 print_function_type_pre(&type->function);
282 print_pointer_type_pre(&type->pointer);
285 print_array_type_pre(&type->array);
288 print_typedef_type_pre(&type->typedeft);
291 print_typeof_type_pre(&type->typeoft);
294 fputs("unknown", out);
297 static void intern_print_type_post(type_t *type)
301 print_function_type_post(&type->function, NULL);
304 print_pointer_type_post(&type->pointer);
307 print_array_type_post(&type->array);
313 case TYPE_COMPOUND_STRUCT:
314 case TYPE_COMPOUND_UNION:
322 void print_type(type_t *type)
324 print_type_ext(type, NULL, NULL);
327 void print_type_ext(type_t *type, const symbol_t *symbol,
328 const context_t *context)
331 fputs("nil type", out);
335 intern_print_type_pre(type);
338 fputs(symbol->string, out);
340 if(type->type == TYPE_FUNCTION) {
341 print_function_type_post((const function_type_t*) type, context);
343 intern_print_type_post(type);
347 bool type_valid(const type_t *type)
349 return type->type != TYPE_INVALID;
352 bool is_type_integer(const type_t *type)
354 assert(!is_typeref(type));
356 if(type->type == TYPE_ENUM)
359 if(type->type != TYPE_ATOMIC)
362 switch(type->atomic.atype) {
363 case ATOMIC_TYPE_BOOL:
364 case ATOMIC_TYPE_CHAR:
365 case ATOMIC_TYPE_SCHAR:
366 case ATOMIC_TYPE_UCHAR:
367 case ATOMIC_TYPE_SHORT:
368 case ATOMIC_TYPE_USHORT:
369 case ATOMIC_TYPE_INT:
370 case ATOMIC_TYPE_UINT:
371 case ATOMIC_TYPE_LONG:
372 case ATOMIC_TYPE_ULONG:
373 case ATOMIC_TYPE_LONGLONG:
374 case ATOMIC_TYPE_ULONGLONG:
381 bool is_type_floating(const type_t *type)
383 assert(!is_typeref(type));
385 if(type->type != TYPE_ATOMIC)
388 switch(type->atomic.atype) {
389 case ATOMIC_TYPE_FLOAT:
390 case ATOMIC_TYPE_DOUBLE:
391 case ATOMIC_TYPE_LONG_DOUBLE:
392 #ifdef PROVIDE_COMPLEX
393 case ATOMIC_TYPE_FLOAT_COMPLEX:
394 case ATOMIC_TYPE_DOUBLE_COMPLEX:
395 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
396 case ATOMIC_TYPE_FLOAT_IMAGINARY:
397 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
398 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
406 bool is_type_signed(const type_t *type)
408 assert(!is_typeref(type));
410 /* enum types are int for now */
411 if(type->type == TYPE_ENUM)
414 if(type->type != TYPE_ATOMIC)
417 switch(type->atomic.atype) {
418 case ATOMIC_TYPE_CHAR:
419 case ATOMIC_TYPE_SCHAR:
420 case ATOMIC_TYPE_SHORT:
421 case ATOMIC_TYPE_INT:
422 case ATOMIC_TYPE_LONG:
423 case ATOMIC_TYPE_LONGLONG:
424 case ATOMIC_TYPE_FLOAT:
425 case ATOMIC_TYPE_DOUBLE:
426 case ATOMIC_TYPE_LONG_DOUBLE:
427 #ifdef PROVIDE_COMPLEX
428 case ATOMIC_TYPE_FLOAT_COMPLEX:
429 case ATOMIC_TYPE_DOUBLE_COMPLEX:
430 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
431 case ATOMIC_TYPE_FLOAT_IMAGINARY:
432 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
433 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
437 case ATOMIC_TYPE_BOOL:
438 case ATOMIC_TYPE_UCHAR:
439 case ATOMIC_TYPE_USHORT:
440 case ATOMIC_TYPE_UINT:
441 case ATOMIC_TYPE_ULONG:
442 case ATOMIC_TYPE_ULONGLONG:
445 case ATOMIC_TYPE_INVALID:
446 case ATOMIC_TYPE_VOID:
450 panic("invalid atomic type found");
454 bool is_type_arithmetic(const type_t *type)
456 assert(!is_typeref(type));
458 if(is_type_integer(type) || is_type_floating(type))
464 bool is_type_scalar(const type_t *type)
466 assert(!is_typeref(type));
468 if(type->type == TYPE_POINTER)
471 return is_type_arithmetic(type);
474 bool is_type_incomplete(const type_t *type)
476 assert(!is_typeref(type));
479 case TYPE_COMPOUND_STRUCT:
480 case TYPE_COMPOUND_UNION: {
481 const compound_type_t *compound_type = &type->compound;
482 declaration_t *declaration = compound_type->declaration;
483 return !declaration->init.is_defined;
489 return type->array.size == NULL;
499 panic("is_type_incomplete called without typerefs skipped");
505 panic("invalid type found");
508 bool types_compatible(const type_t *type1, const type_t *type2)
510 assert(!is_typeref(type1));
511 assert(!is_typeref(type2));
513 /* TODO: really incomplete */
517 if(type1->type == TYPE_ATOMIC && type2->type == TYPE_ATOMIC) {
518 return type1->atomic.atype == type2->atomic.atype;
524 bool pointers_compatible(const type_t *type1, const type_t *type2)
526 assert(!is_typeref(type1));
527 assert(!is_typeref(type2));
529 assert(type1->type == TYPE_POINTER);
530 assert(type2->type == TYPE_POINTER);
535 static size_t get_type_size(type_t *type)
538 case TYPE_ATOMIC: return sizeof(atomic_type_t); break;
539 case TYPE_COMPOUND_STRUCT:
540 case TYPE_COMPOUND_UNION: return sizeof(compound_type_t); break;
541 case TYPE_ENUM: return sizeof(enum_type_t); break;
542 case TYPE_FUNCTION: return sizeof(function_type_t); break;
543 case TYPE_POINTER: return sizeof(pointer_type_t); break;
544 case TYPE_ARRAY: return sizeof(array_type_t); break;
545 case TYPE_BUILTIN: return sizeof(builtin_type_t); break;
546 case TYPE_TYPEDEF: return sizeof(typedef_type_t); break;
547 case TYPE_TYPEOF: return sizeof(typeof_type_t); break;
549 case TYPE_INVALID: panic("invalid type found"); break;
551 panic("unknown type found");
556 * note that this does not produce a deep copy!
558 static type_t *duplicate_type(type_t *type)
560 size_t size = get_type_size(type);
562 type_t *copy = obstack_alloc(type_obst, size);
563 memcpy(copy, type, size);
565 (void) duplicate_type;
570 type_t *skip_typeref(type_t *type)
572 unsigned qualifiers = type->base.qualifiers;
577 qualifiers |= type->base.qualifiers;
578 const typedef_type_t *typedef_type = &type->typedeft;
579 if(typedef_type->resolved_type != NULL) {
580 type = typedef_type->resolved_type;
583 type = typedef_type->declaration->type;
587 const typeof_type_t *typeof_type = &type->typeoft;
588 if(typeof_type->typeof_type != NULL) {
589 type = typeof_type->typeof_type;
591 type = typeof_type->expression->base.datatype;
596 const builtin_type_t *builtin_type = &type->builtin;
597 type = builtin_type->real_type;
611 static type_t *identify_new_type(type_t *type)
613 type_t *result = typehash_insert(type);
615 obstack_free(type_obst, type);
620 type_t *make_atomic_type(atomic_type_type_t atype, type_qualifiers_t qualifiers)
622 type_t *type = obstack_alloc(type_obst, sizeof(atomic_type_t));
623 memset(type, 0, sizeof(atomic_type_t));
625 type->type = TYPE_ATOMIC;
626 type->base.qualifiers = qualifiers;
627 type->atomic.atype = atype;
629 return identify_new_type(type);
632 type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers)
634 type_t *type = obstack_alloc(type_obst, sizeof(pointer_type_t));
635 memset(type, 0, sizeof(pointer_type_t));
637 type->type = TYPE_POINTER;
638 type->base.qualifiers = qualifiers;
639 type->pointer.points_to = points_to;
641 return identify_new_type(type);
644 static __attribute__((unused))
645 void dbg_type(type_t *type)