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
24 #include "type_hash.h"
26 #include "adt/error.h"
31 #define HashSet type_hash_t
32 #define HashSetIterator type_hash_iterator_t
33 #define ValueType type_t*
34 #include "adt/hashset.h"
36 #undef HashSetIterator
39 typedef struct type_hash_iterator_t type_hash_iterator_t;
40 typedef struct type_hash_t type_hash_t;
42 /* TODO: ^= is a bad way of combining hashes since most addresses are very
45 static unsigned hash_ptr(const void *ptr)
47 unsigned ptr_int = ((char*) ptr - (char*) NULL);
51 static unsigned hash_atomic_type(const atomic_type_t *type)
53 unsigned some_prime = 27644437;
54 unsigned result = type->akind * some_prime;
59 static unsigned hash_complex_type(const complex_type_t *type)
61 unsigned some_prime = 27644437;
62 unsigned result = type->akind * some_prime;
67 static unsigned hash_imaginary_type(const imaginary_type_t *type)
69 unsigned some_prime = 27644437;
70 unsigned result = type->akind * some_prime;
75 static unsigned hash_pointer_type(const pointer_type_t *type)
77 return hash_ptr(type->points_to) ^ hash_ptr(type->base_variable);
80 static unsigned hash_reference_type(const reference_type_t *type)
82 return hash_ptr(type->refers_to);
85 static unsigned hash_array_type(const array_type_t *type)
87 return hash_ptr(type->element_type);
90 static unsigned hash_compound_type(const compound_type_t *type)
92 return hash_ptr(type->compound);
95 static unsigned hash_function_type(const function_type_t *type)
97 unsigned result = hash_ptr(type->return_type);
99 function_parameter_t *parameter = type->parameters;
100 while (parameter != NULL) {
101 result ^= hash_ptr(parameter->type);
102 parameter = parameter->next;
104 result += type->modifiers;
105 result += type->linkage;
106 result += type->calling_convention;
111 static unsigned hash_enum_type(const enum_type_t *type)
113 return hash_ptr(type->enume);
116 static unsigned hash_typeof_type(const typeof_type_t *type)
118 unsigned result = hash_ptr(type->expression);
119 result ^= hash_ptr(type->typeof_type);
124 static unsigned hash_type(const type_t *type)
128 switch (type->kind) {
130 panic("internalizing void or invalid types not possible");
134 hash = hash_atomic_type(&type->atomic);
137 hash = hash_complex_type(&type->complex);
140 hash = hash_imaginary_type(&type->imaginary);
143 hash = hash_enum_type(&type->enumt);
145 case TYPE_COMPOUND_STRUCT:
146 case TYPE_COMPOUND_UNION:
147 hash = hash_compound_type(&type->compound);
150 hash = hash_function_type(&type->function);
153 hash = hash_pointer_type(&type->pointer);
156 hash = hash_reference_type(&type->reference);
159 hash = hash_array_type(&type->array);
162 hash = hash_ptr(type->typedeft.typedefe);
165 hash = hash_typeof_type(&type->typeoft);
169 unsigned some_prime = 99991;
170 hash ^= some_prime * type->base.qualifiers;
175 static bool atomic_types_equal(const atomic_type_t *type1,
176 const atomic_type_t *type2)
178 return type1->akind == type2->akind;
181 static bool complex_types_equal(const complex_type_t *type1,
182 const complex_type_t *type2)
184 return type1->akind == type2->akind;
187 static bool imaginary_types_equal(const imaginary_type_t *type1,
188 const imaginary_type_t *type2)
190 return type1->akind == type2->akind;
193 static bool function_types_equal(const function_type_t *type1,
194 const function_type_t *type2)
196 if (type1->return_type != type2->return_type)
198 if (type1->variadic != type2->variadic)
200 if (type1->unspecified_parameters != type2->unspecified_parameters)
202 if (type1->kr_style_parameters != type2->kr_style_parameters)
204 if (type1->linkage != type2->linkage)
206 if (type1->modifiers != type2->modifiers)
208 if (type1->calling_convention != type2->calling_convention)
211 function_parameter_t *param1 = type1->parameters;
212 function_parameter_t *param2 = type2->parameters;
213 while (param1 != NULL && param2 != NULL) {
214 if (param1->type != param2->type)
216 param1 = param1->next;
217 param2 = param2->next;
219 if (param1 != NULL || param2 != NULL)
225 static bool pointer_types_equal(const pointer_type_t *type1,
226 const pointer_type_t *type2)
228 return type1->points_to == type2->points_to &&
229 type1->base_variable == type2->base_variable;
232 static bool reference_types_equal(const reference_type_t *type1,
233 const reference_type_t *type2)
235 return type1->refers_to == type2->refers_to;
238 static bool array_types_equal(const array_type_t *type1,
239 const array_type_t *type2)
241 if (type1->element_type != type2->element_type)
243 if (type1->is_variable != type2->is_variable)
245 if (type1->is_static != type2->is_static)
247 if (type1->size_constant != type2->size_constant)
250 /* never identify vla types, because we need them for caching calculated
251 * sizes later in ast2firm */
252 if (type1->is_vla || type2->is_vla)
255 /* TODO: compare size expressions for equality... */
260 static bool compound_types_equal(const compound_type_t *type1,
261 const compound_type_t *type2)
263 return type1->compound == type2->compound;
266 static bool enum_types_equal(const enum_type_t *type1,
267 const enum_type_t *type2)
269 return type1->enume == type2->enume;
272 static bool typedef_types_equal(const typedef_type_t *type1,
273 const typedef_type_t *type2)
275 return type1->typedefe == type2->typedefe;
278 static bool typeof_types_equal(const typeof_type_t *type1,
279 const typeof_type_t *type2)
281 if (type1->expression != type2->expression)
283 if (type1->typeof_type != type2->typeof_type)
289 static bool types_equal(const type_t *type1, const type_t *type2)
293 if (type1->kind != type2->kind)
295 if (type1->base.qualifiers != type2->base.qualifiers)
298 switch (type1->kind) {
300 /* Hmm, the error type is never equal */
305 return atomic_types_equal(&type1->atomic, &type2->atomic);
307 return complex_types_equal(&type1->complex, &type2->complex);
309 return imaginary_types_equal(&type1->imaginary, &type2->imaginary);
311 return enum_types_equal(&type1->enumt, &type2->enumt);
312 case TYPE_COMPOUND_STRUCT:
313 case TYPE_COMPOUND_UNION:
314 return compound_types_equal(&type1->compound, &type2->compound);
316 return function_types_equal(&type1->function, &type2->function);
318 return pointer_types_equal(&type1->pointer, &type2->pointer);
320 return reference_types_equal(&type1->reference, &type2->reference);
322 return array_types_equal(&type1->array, &type2->array);
324 return typeof_types_equal(&type1->typeoft, &type2->typeoft);
326 return typedef_types_equal(&type1->typedeft, &type2->typedeft);
332 #define HashSet type_hash_t
333 #define HashSetIterator type_hash_iterator_t
334 #define ValueType type_t*
335 #define NullValue NULL
336 #define DeletedValue ((type_t*)-1)
337 #define Hash(this, key) hash_type(key)
338 #define KeysEqual(this,key1,key2) types_equal(key1, key2)
339 #define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof(*(ptr)))
341 #define hashset_init _typehash_init
342 #define hashset_init_size _typehash_init_size
343 #define hashset_destroy _typehash_destroy
344 #define hashset_insert _typehash_insert
345 #define hashset_remove typehash_remove
346 #define hashset_find typehash_find
347 #define hashset_size typehash_size
348 #define hashset_iterator_init typehash_iterator_init
349 #define hashset_iterator_next typehash_iterator_next
350 #define hashset_remove_iterator typehash_remove_iterator
351 #define SCALAR_RETURN
353 #include "adt/hashset.c"
355 static type_hash_t typehash;
357 void init_typehash(void)
359 _typehash_init(&typehash);
362 void exit_typehash(void)
364 _typehash_destroy(&typehash);
367 type_t *typehash_insert(type_t *type)
369 return _typehash_insert(&typehash, type);