9 static struct obstack _type_obst;
10 struct obstack *type_obst = &_type_obst;
12 static int type_visited = 0;
14 static void intern_print_type_pre(type_t *type);
15 static void intern_print_type_post(type_t *type);
19 obstack_init(type_obst);
24 obstack_free(type_obst, NULL);
27 void type_set_output(FILE *stream)
32 void inc_type_visited(void)
37 void print_type_qualifiers(type_qualifiers_t qualifiers)
39 if(qualifiers & TYPE_QUALIFIER_CONST) fputs("const ", out);
40 if(qualifiers & TYPE_QUALIFIER_VOLATILE) fputs("volatile ", out);
41 if(qualifiers & TYPE_QUALIFIER_RESTRICT) fputs("restrict ", out);
45 void print_atomic_type(const atomic_type_t *type)
47 print_type_qualifiers(type->type.qualifiers);
51 case ATOMIC_TYPE_INVALID: s = "INVALIDATOMIC"; break;
52 case ATOMIC_TYPE_VOID: s = "void"; break;
53 case ATOMIC_TYPE_BOOL: s = "_Bool"; break;
54 case ATOMIC_TYPE_CHAR: s = "char"; break;
55 case ATOMIC_TYPE_SCHAR: s = "signed char"; break;
56 case ATOMIC_TYPE_UCHAR: s = "unsigned char"; break;
57 case ATOMIC_TYPE_INT: s = "int"; break;
58 case ATOMIC_TYPE_UINT: s = "unsigned int"; break;
59 case ATOMIC_TYPE_SHORT: s = "short"; break;
60 case ATOMIC_TYPE_USHORT: s = "unsigned short"; break;
61 case ATOMIC_TYPE_LONG: s = "long"; break;
62 case ATOMIC_TYPE_ULONG: s = "unsigned long"; break;
63 case ATOMIC_TYPE_LONGLONG: s = "long long"; break;
64 case ATOMIC_TYPE_ULONGLONG: s = "unsigned long long"; break;
65 case ATOMIC_TYPE_LONG_DOUBLE: s = "long double"; break;
66 case ATOMIC_TYPE_FLOAT: s = "float"; break;
67 case ATOMIC_TYPE_DOUBLE: s = "double"; break;
68 default: s = "UNKNOWNATOMIC"; break;
73 static void print_function_type_pre(const function_type_t *type)
75 print_type_qualifiers(type->type.qualifiers);
77 intern_print_type_pre(type->result_type);
79 /* TODO: don't emit braces if we're the toplevel type... */
83 static void print_function_type_post(const function_type_t *type,
84 const context_t *context)
86 /* TODO: don't emit braces if we're the toplevel type... */
87 intern_print_type_post(type->result_type);
94 function_parameter_t *parameter = type->parameters;
95 for( ; parameter != NULL; parameter = parameter->next) {
101 print_type(parameter->type);
104 declaration_t *parameter = context->declarations;
105 for( ; parameter != NULL; parameter = parameter->next) {
111 print_type_ext(parameter->type, parameter->symbol,
112 ¶meter->context);
123 if(first && !type->unspecified_parameters) {
129 static void print_pointer_type_pre(const pointer_type_t *type)
131 intern_print_type_pre(type->points_to);
133 print_type_qualifiers(type->type.qualifiers);
136 static void print_pointer_type_post(const pointer_type_t *type)
138 intern_print_type_post(type->points_to);
141 static void print_array_type_pre(const array_type_t *type)
143 intern_print_type_pre(type->element_type);
146 static void print_array_type_post(const array_type_t *type)
149 if(type->is_static) {
150 fputs("static ", out);
152 print_type_qualifiers(type->type.qualifiers);
153 if(type->size != NULL) {
154 print_expression(type->size);
157 intern_print_type_post(type->element_type);
160 void print_enum_definition(const declaration_t *declaration)
166 declaration_t *entry = declaration->next;
167 for( ; entry != NULL && entry->storage_class == STORAGE_CLASS_ENUM_ENTRY;
168 entry = entry->next) {
171 fprintf(out, "%s", entry->symbol->string);
172 if(entry->init.initializer != NULL) {
174 print_expression(entry->init.enum_value);
184 static void print_type_enum(const enum_type_t *type)
186 print_type_qualifiers(type->type.qualifiers);
189 declaration_t *declaration = type->declaration;
190 symbol_t *symbol = declaration->symbol;
192 fputs(symbol->string, out);
194 print_enum_definition(declaration);
198 void print_compound_definition(const declaration_t *declaration)
203 declaration_t *iter = declaration->context.declarations;
204 for( ; iter != NULL; iter = iter->next) {
206 print_declaration(iter);
215 static void print_compound_type(const compound_type_t *type)
217 print_type_qualifiers(type->type.qualifiers);
219 if(type->type.type == TYPE_COMPOUND_STRUCT) {
220 fputs("struct ", out);
222 assert(type->type.type == TYPE_COMPOUND_UNION);
223 fputs("union ", out);
226 declaration_t *declaration = type->declaration;
227 symbol_t *symbol = declaration->symbol;
229 fputs(symbol->string, out);
231 print_compound_definition(declaration);
235 static void print_typedef_type_pre(typedef_type_t *type)
237 fputs(type->declaration->symbol->string, out);
240 static void print_typeof_type_pre(typeof_type_t *type)
242 fputs("typeof(", out);
243 if(type->expression != NULL) {
244 assert(type->typeof_type == NULL);
245 print_expression(type->expression);
247 print_type(type->typeof_type);
252 static void intern_print_type_pre(type_t *type)
257 fputs("invalid", out);
260 print_type_enum(&type->enumt);
263 print_atomic_type(&type->atomic);
265 case TYPE_COMPOUND_STRUCT:
266 case TYPE_COMPOUND_UNION:
267 print_compound_type(&type->compound);
270 fputs(type->builtin.symbol->string, out);
273 print_function_type_pre(&type->function);
276 print_pointer_type_pre(&type->pointer);
279 print_array_type_pre(&type->array);
282 print_typedef_type_pre(&type->typedeft);
285 print_typeof_type_pre(&type->typeoft);
288 fputs("unknown", out);
291 static void intern_print_type_post(type_t *type)
295 print_function_type_post(&type->function, NULL);
298 print_pointer_type_post(&type->pointer);
301 print_array_type_post(&type->array);
307 case TYPE_COMPOUND_STRUCT:
308 case TYPE_COMPOUND_UNION:
316 void print_type(type_t *type)
318 print_type_ext(type, NULL, NULL);
321 void print_type_ext(type_t *type, const symbol_t *symbol,
322 const context_t *context)
325 fputs("nil type", out);
329 intern_print_type_pre(type);
332 fputs(symbol->string, out);
334 if(type->type == TYPE_FUNCTION) {
335 print_function_type_post((const function_type_t*) type, context);
337 intern_print_type_post(type);
341 bool type_valid(const type_t *type)
343 return type->type != TYPE_INVALID;
346 bool is_type_integer(const type_t *type)
348 assert(!is_typeref(type));
350 if(type->type == TYPE_ENUM)
353 if(type->type != TYPE_ATOMIC)
356 switch(type->atomic.atype) {
357 case ATOMIC_TYPE_BOOL:
358 case ATOMIC_TYPE_CHAR:
359 case ATOMIC_TYPE_SCHAR:
360 case ATOMIC_TYPE_UCHAR:
361 case ATOMIC_TYPE_SHORT:
362 case ATOMIC_TYPE_USHORT:
363 case ATOMIC_TYPE_INT:
364 case ATOMIC_TYPE_UINT:
365 case ATOMIC_TYPE_LONG:
366 case ATOMIC_TYPE_ULONG:
367 case ATOMIC_TYPE_LONGLONG:
368 case ATOMIC_TYPE_ULONGLONG:
375 bool is_type_floating(const type_t *type)
377 assert(!is_typeref(type));
379 if(type->type != TYPE_ATOMIC)
382 switch(type->atomic.atype) {
383 case ATOMIC_TYPE_FLOAT:
384 case ATOMIC_TYPE_DOUBLE:
385 case ATOMIC_TYPE_LONG_DOUBLE:
386 #ifdef PROVIDE_COMPLEX
387 case ATOMIC_TYPE_FLOAT_COMPLEX:
388 case ATOMIC_TYPE_DOUBLE_COMPLEX:
389 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
390 case ATOMIC_TYPE_FLOAT_IMAGINARY:
391 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
392 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
400 bool is_type_signed(const type_t *type)
402 assert(!is_typeref(type));
404 /* enum types are int for now */
405 if(type->type == TYPE_ENUM)
408 if(type->type != TYPE_ATOMIC)
411 switch(type->atomic.atype) {
412 case ATOMIC_TYPE_CHAR:
413 case ATOMIC_TYPE_SCHAR:
414 case ATOMIC_TYPE_SHORT:
415 case ATOMIC_TYPE_INT:
416 case ATOMIC_TYPE_LONG:
417 case ATOMIC_TYPE_LONGLONG:
418 case ATOMIC_TYPE_FLOAT:
419 case ATOMIC_TYPE_DOUBLE:
420 case ATOMIC_TYPE_LONG_DOUBLE:
421 #ifdef PROVIDE_COMPLEX
422 case ATOMIC_TYPE_FLOAT_COMPLEX:
423 case ATOMIC_TYPE_DOUBLE_COMPLEX:
424 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
425 case ATOMIC_TYPE_FLOAT_IMAGINARY:
426 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
427 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
431 case ATOMIC_TYPE_BOOL:
432 case ATOMIC_TYPE_UCHAR:
433 case ATOMIC_TYPE_USHORT:
434 case ATOMIC_TYPE_UINT:
435 case ATOMIC_TYPE_ULONG:
436 case ATOMIC_TYPE_ULONGLONG:
439 case ATOMIC_TYPE_INVALID:
440 case ATOMIC_TYPE_VOID:
444 panic("invalid atomic type found");
448 bool is_type_arithmetic(const type_t *type)
450 assert(!is_typeref(type));
452 if(is_type_integer(type) || is_type_floating(type))
458 bool is_type_scalar(const type_t *type)
460 assert(!is_typeref(type));
462 if(type->type == TYPE_POINTER)
465 return is_type_arithmetic(type);
468 bool is_type_incomplete(const type_t *type)
470 assert(!is_typeref(type));
473 case TYPE_COMPOUND_STRUCT:
474 case TYPE_COMPOUND_UNION: {
475 const compound_type_t *compound_type = &type->compound;
476 declaration_t *declaration = compound_type->declaration;
477 return !declaration->init.is_defined;
483 return type->array.size == NULL;
493 panic("is_type_incomplete called without typerefs skipped");
499 panic("invalid type found");
502 bool types_compatible(const type_t *type1, const type_t *type2)
504 assert(!is_typeref(type1));
505 assert(!is_typeref(type2));
507 /* TODO: really incomplete */
511 if(type1->type == TYPE_ATOMIC && type2->type == TYPE_ATOMIC) {
512 return type1->atomic.atype == type2->atomic.atype;
518 bool pointers_compatible(const type_t *type1, const type_t *type2)
520 assert(!is_typeref(type1));
521 assert(!is_typeref(type2));
523 assert(type1->type == TYPE_POINTER);
524 assert(type2->type == TYPE_POINTER);
529 static size_t get_type_size(type_t *type)
532 case TYPE_ATOMIC: return sizeof(atomic_type_t); break;
533 case TYPE_COMPOUND_STRUCT:
534 case TYPE_COMPOUND_UNION: return sizeof(compound_type_t); break;
535 case TYPE_ENUM: return sizeof(enum_type_t); break;
536 case TYPE_FUNCTION: return sizeof(function_type_t); break;
537 case TYPE_POINTER: return sizeof(pointer_type_t); break;
538 case TYPE_ARRAY: return sizeof(array_type_t); break;
539 case TYPE_BUILTIN: return sizeof(builtin_type_t); break;
540 case TYPE_TYPEDEF: return sizeof(typedef_type_t); break;
541 case TYPE_TYPEOF: return sizeof(typeof_type_t); break;
543 case TYPE_INVALID: panic("invalid type found"); break;
545 panic("unknown type found");
550 * note that this does not produce a deep copy!
552 static type_t *duplicate_type(type_t *type)
554 size_t size = get_type_size(type);
556 type_t *copy = obstack_alloc(type_obst, size);
557 memcpy(copy, type, size);
559 (void) duplicate_type;
564 type_t *skip_typeref(type_t *type)
566 unsigned qualifiers = type->base.qualifiers;
571 qualifiers |= type->base.qualifiers;
572 const typedef_type_t *typedef_type = &type->typedeft;
573 if(typedef_type->resolved_type != NULL) {
574 type = typedef_type->resolved_type;
577 type = typedef_type->declaration->type;
581 const typeof_type_t *typeof_type = &type->typeoft;
582 if(typeof_type->typeof_type != NULL) {
583 type = typeof_type->typeof_type;
585 type = typeof_type->expression->base.datatype;
590 const builtin_type_t *builtin_type = &type->builtin;
591 type = builtin_type->real_type;
605 static type_t *identify_new_type(type_t *type)
607 type_t *result = typehash_insert(type);
609 obstack_free(type_obst, type);
614 type_t *make_atomic_type(atomic_type_type_t atype, type_qualifiers_t qualifiers)
616 type_t *type = obstack_alloc(type_obst, sizeof(atomic_type_t));
617 memset(type, 0, sizeof(atomic_type_t));
619 type->type = TYPE_ATOMIC;
620 type->base.qualifiers = qualifiers;
621 type->atomic.atype = atype;
623 return identify_new_type(type);
626 type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers)
628 type_t *type = obstack_alloc(type_obst, sizeof(pointer_type_t));
629 memset(type, 0, sizeof(pointer_type_t));
631 type->type = TYPE_POINTER;
632 type->base.qualifiers = qualifiers;
633 type->pointer.points_to = points_to;
635 return identify_new_type(type);
638 static __attribute__((unused))
639 void dbg_type(type_t *type)