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
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);
80 static unsigned hash_array_type(const array_type_t *type)
82 return hash_ptr(type->element_type);
85 static unsigned hash_compound_type(const compound_type_t *type)
87 return hash_ptr(type->compound);
90 static unsigned hash_type(const type_t *type);
92 static unsigned hash_function_type(const function_type_t *type)
94 unsigned result = hash_ptr(type->return_type);
96 function_parameter_t *parameter = type->parameters;
97 while (parameter != NULL) {
98 result ^= hash_ptr(parameter->type);
99 parameter = parameter->next;
101 result ^= hash_ptr(type->linkage);
106 static unsigned hash_enum_type(const enum_type_t *type)
108 return hash_ptr(type->enume);
111 static unsigned hash_typeof_type(const typeof_type_t *type)
113 unsigned result = hash_ptr(type->expression);
114 result ^= hash_ptr(type->typeof_type);
119 static unsigned hash_bitfield_type(const bitfield_type_t *type)
121 unsigned result = hash_ptr(type->base_type);
127 static unsigned hash_type(const type_t *type)
131 switch (type->kind) {
133 panic("internalizing void or invalid types not possible");
138 hash = hash_atomic_type(&type->atomic);
141 hash = hash_complex_type(&type->complex);
144 hash = hash_imaginary_type(&type->imaginary);
147 hash = hash_enum_type(&type->enumt);
149 case TYPE_COMPOUND_STRUCT:
150 case TYPE_COMPOUND_UNION:
151 hash = hash_compound_type(&type->compound);
154 hash = hash_function_type(&type->function);
157 hash = hash_pointer_type(&type->pointer);
160 hash = hash_array_type(&type->array);
163 hash = hash_ptr(type->builtin.symbol);
166 hash = hash_ptr(type->typedeft.typedefe);
169 hash = hash_typeof_type(&type->typeoft);
172 hash = hash_bitfield_type(&type->bitfield);
176 unsigned some_prime = 99991;
177 hash ^= some_prime * type->base.qualifiers;
182 static bool atomic_types_equal(const atomic_type_t *type1,
183 const atomic_type_t *type2)
185 return type1->akind == type2->akind;
188 static bool complex_types_equal(const complex_type_t *type1,
189 const complex_type_t *type2)
191 return type1->akind == type2->akind;
194 static bool imaginary_types_equal(const imaginary_type_t *type1,
195 const imaginary_type_t *type2)
197 return type1->akind == type2->akind;
200 static bool function_types_equal(const function_type_t *type1,
201 const function_type_t *type2)
203 if (type1->return_type != type2->return_type)
205 if (type1->variadic != type2->variadic)
207 if (type1->unspecified_parameters != type2->unspecified_parameters)
209 if (type1->kr_style_parameters != type2->kr_style_parameters)
211 if (type1->linkage != type2->linkage)
214 function_parameter_t *param1 = type1->parameters;
215 function_parameter_t *param2 = type2->parameters;
216 while (param1 != NULL && param2 != NULL) {
217 if (param1->type != param2->type)
219 param1 = param1->next;
220 param2 = param2->next;
222 if (param1 != NULL || param2 != NULL)
228 static bool pointer_types_equal(const pointer_type_t *type1,
229 const pointer_type_t *type2)
231 return type1->points_to == type2->points_to;
234 static bool array_types_equal(const array_type_t *type1,
235 const array_type_t *type2)
237 if (type1->element_type != type2->element_type)
239 if (type1->is_variable != type2->is_variable)
241 if (type1->is_static != type2->is_static)
243 if (type1->size_constant != type2->size_constant)
246 /* never identify vla types, because we need them for caching calculated
247 * sizes later in ast2firm */
248 if (type1->is_vla || type2->is_vla)
251 /* TODO: compare size expressions for equality... */
256 static bool builtin_types_equal(const builtin_type_t *type1,
257 const builtin_type_t *type2)
259 return type1->symbol == type2->symbol;
262 static bool compound_types_equal(const compound_type_t *type1,
263 const compound_type_t *type2)
265 return type1->compound == type2->compound;
268 static bool enum_types_equal(const enum_type_t *type1,
269 const enum_type_t *type2)
271 return type1->enume == type2->enume;
274 static bool typedef_types_equal(const typedef_type_t *type1,
275 const typedef_type_t *type2)
277 return type1->typedefe == type2->typedefe;
280 static bool typeof_types_equal(const typeof_type_t *type1,
281 const typeof_type_t *type2)
283 if (type1->expression != type2->expression)
285 if (type1->typeof_type != type2->typeof_type)
291 static bool bitfield_types_equal(const bitfield_type_t *type1,
292 const bitfield_type_t *type2)
294 if (type1->base_type != type2->base_type)
296 /* TODO: compare size expression */
300 static bool types_equal(const type_t *type1, const type_t *type2)
304 if (type1->kind != type2->kind)
306 if (type1->base.qualifiers != type2->base.qualifiers)
308 if (type1->base.modifiers != type2->base.modifiers)
311 switch (type1->kind) {
313 /* Hmm, the error type is never equal */
318 return atomic_types_equal(&type1->atomic, &type2->atomic);
320 return complex_types_equal(&type1->complex, &type2->complex);
322 return imaginary_types_equal(&type1->imaginary, &type2->imaginary);
324 return enum_types_equal(&type1->enumt, &type2->enumt);
325 case TYPE_COMPOUND_STRUCT:
326 case TYPE_COMPOUND_UNION:
327 return compound_types_equal(&type1->compound, &type2->compound);
329 return function_types_equal(&type1->function, &type2->function);
331 return pointer_types_equal(&type1->pointer, &type2->pointer);
333 return array_types_equal(&type1->array, &type2->array);
335 return builtin_types_equal(&type1->builtin, &type2->builtin);
337 return typeof_types_equal(&type1->typeoft, &type2->typeoft);
339 return typedef_types_equal(&type1->typedeft, &type2->typedeft);
341 return bitfield_types_equal(&type1->bitfield, &type2->bitfield);
347 #define HashSet type_hash_t
348 #define HashSetIterator type_hash_iterator_t
349 #define ValueType type_t*
350 #define NullValue NULL
351 #define DeletedValue ((type_t*)-1)
352 #define Hash(this, key) hash_type(key)
353 #define KeysEqual(this,key1,key2) types_equal(key1, key2)
354 #define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof(*(ptr)))
356 #define hashset_init _typehash_init
357 #define hashset_init_size _typehash_init_size
358 #define hashset_destroy _typehash_destroy
359 #define hashset_insert _typehash_insert
360 #define hashset_remove typehash_remove
361 #define hashset_find typehash_find
362 #define hashset_size typehash_size
363 #define hashset_iterator_init typehash_iterator_init
364 #define hashset_iterator_next typehash_iterator_next
365 #define hashset_remove_iterator typehash_remove_iterator
366 #define SCALAR_RETURN
368 #include "adt/hashset.c"
370 static type_hash_t typehash;
372 void init_typehash(void)
374 _typehash_init(&typehash);
377 void exit_typehash(void)
379 _typehash_destroy(&typehash);
382 type_t *typehash_insert(type_t *type)
384 return _typehash_insert(&typehash, type);