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 /* TODO: ^= is a bad way of combining hashes since most addresses are very
42 static unsigned hash_ptr(const void *ptr)
44 unsigned ptr_int = ((char*) ptr - (char*) NULL);
48 static unsigned hash_atomic_type(const atomic_type_t *type)
50 unsigned some_prime = 27644437;
51 unsigned result = type->akind * some_prime;
56 static unsigned hash_complex_type(const complex_type_t *type)
58 unsigned some_prime = 27644437;
59 unsigned result = type->akind * some_prime;
64 static unsigned hash_imaginary_type(const imaginary_type_t *type)
66 unsigned some_prime = 27644437;
67 unsigned result = type->akind * some_prime;
72 static unsigned hash_pointer_type(const pointer_type_t *type)
74 return hash_ptr(type->points_to);
77 static unsigned hash_array_type(const array_type_t *type)
79 return hash_ptr(type->element_type);
82 static unsigned hash_compound_type(const compound_type_t *type)
84 return hash_ptr(type->declaration);
87 static unsigned hash_type(const type_t *type);
89 static unsigned hash_function_type(const function_type_t *type)
91 unsigned result = hash_ptr(type->return_type);
93 function_parameter_t *parameter = type->parameters;
94 while(parameter != NULL) {
95 result ^= hash_ptr(parameter->type);
96 parameter = parameter->next;
102 static unsigned hash_enum_type(const enum_type_t *type)
104 return hash_ptr(type->declaration);
107 static unsigned hash_typeof_type(const typeof_type_t *type)
109 unsigned result = hash_ptr(type->expression);
110 result ^= hash_ptr(type->typeof_type);
115 static unsigned hash_bitfield_type(const bitfield_type_t *type)
117 unsigned result = hash_ptr(type->base_type);
123 static unsigned hash_type(const type_t *type)
129 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_array_type(&type->array);
159 hash = hash_ptr(type->builtin.symbol);
162 hash = hash_ptr(type->typedeft.declaration);
165 hash = hash_typeof_type(&type->typeoft);
168 hash = hash_bitfield_type(&type->bitfield);
172 unsigned some_prime = 99991;
173 hash ^= some_prime * type->base.qualifiers;
178 static bool atomic_types_equal(const atomic_type_t *type1,
179 const atomic_type_t *type2)
181 return type1->akind == type2->akind;
184 static bool complex_types_equal(const complex_type_t *type1,
185 const complex_type_t *type2)
187 return type1->akind == type2->akind;
190 static bool imaginary_types_equal(const imaginary_type_t *type1,
191 const imaginary_type_t *type2)
193 return type1->akind == type2->akind;
196 static bool function_types_equal(const function_type_t *type1,
197 const function_type_t *type2)
199 if(type1->return_type != type2->return_type)
201 if(type1->variadic != type2->variadic)
203 if(type1->unspecified_parameters != type2->unspecified_parameters)
205 if(type1->kr_style_parameters != type2->kr_style_parameters)
208 function_parameter_t *param1 = type1->parameters;
209 function_parameter_t *param2 = type2->parameters;
210 while(param1 != NULL && param2 != NULL) {
211 if(param1->type != param2->type)
213 param1 = param1->next;
214 param2 = param2->next;
216 if(param1 != NULL || param2 != NULL)
222 static bool pointer_types_equal(const pointer_type_t *type1,
223 const pointer_type_t *type2)
225 return type1->points_to == type2->points_to;
228 static bool array_types_equal(const array_type_t *type1,
229 const array_type_t *type2)
231 if(type1->element_type != type2->element_type)
233 if(type1->is_variable != type2->is_variable)
235 if(type1->is_static != type2->is_static)
237 if(type1->size_constant != type2->size_constant)
240 /* never identify vla types, because we need them for caching calculated
241 * sizes later in ast2firm */
242 if(type1->is_vla || type2->is_vla)
245 /* TODO: compare size expressions for equality... */
250 static bool builtin_types_equal(const builtin_type_t *type1,
251 const builtin_type_t *type2)
253 return type1->symbol == type2->symbol;
256 static bool compound_types_equal(const compound_type_t *type1,
257 const compound_type_t *type2)
259 return type1->declaration == type2->declaration;
262 static bool enum_types_equal(const enum_type_t *type1,
263 const enum_type_t *type2)
265 return type1->declaration == type2->declaration;
268 static bool typedef_types_equal(const typedef_type_t *type1,
269 const typedef_type_t *type2)
271 return type1->declaration == type2->declaration;
274 static bool typeof_types_equal(const typeof_type_t *type1,
275 const typeof_type_t *type2)
277 if(type1->expression != type2->expression)
279 if(type1->typeof_type != type2->typeof_type)
285 static bool bitfield_types_equal(const bitfield_type_t *type1,
286 const bitfield_type_t *type2)
288 if(type1->base_type != type2->base_type)
290 /* TODO: compare size expression */
294 static bool types_equal(const type_t *type1, const type_t *type2)
298 if(type1->kind != type2->kind)
300 if(type1->base.qualifiers != type2->base.qualifiers)
303 switch(type1->kind) {
305 /* Hmm, the error type is never equal */
310 return atomic_types_equal(&type1->atomic, &type2->atomic);
312 return complex_types_equal(&type1->complex, &type2->complex);
314 return imaginary_types_equal(&type1->imaginary, &type2->imaginary);
316 return enum_types_equal(&type1->enumt, &type2->enumt);
317 case TYPE_COMPOUND_STRUCT:
318 case TYPE_COMPOUND_UNION:
319 return compound_types_equal(&type1->compound, &type2->compound);
321 return function_types_equal(&type1->function, &type2->function);
323 return pointer_types_equal(&type1->pointer, &type2->pointer);
325 return array_types_equal(&type1->array, &type2->array);
327 return builtin_types_equal(&type1->builtin, &type2->builtin);
329 return typeof_types_equal(&type1->typeoft, &type2->typeoft);
331 return typedef_types_equal(&type1->typedeft, &type2->typedeft);
333 return bitfield_types_equal(&type1->bitfield, &type2->bitfield);
339 #define HashSet type_hash_t
340 #define HashSetIterator type_hash_iterator_t
341 #define ValueType type_t*
342 #define NullValue NULL
343 #define DeletedValue ((type_t*)-1)
344 #define Hash(this, key) hash_type(key)
345 #define KeysEqual(this,key1,key2) types_equal(key1, key2)
346 #define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof(*(ptr)))
348 #define hashset_init _typehash_init
349 #define hashset_init_size _typehash_init_size
350 #define hashset_destroy _typehash_destroy
351 #define hashset_insert _typehash_insert
352 #define hashset_remove typehash_remove
353 #define hashset_find typehash_find
354 #define hashset_size typehash_size
355 #define hashset_iterator_init typehash_iterator_init
356 #define hashset_iterator_next typehash_iterator_next
357 #define hashset_remove_iterator typehash_remove_iterator
359 #include "adt/hashset.c"
361 static type_hash_t typehash;
363 void init_typehash(void)
365 _typehash_init(&typehash);
368 void exit_typehash(void)
370 _typehash_destroy(&typehash);
373 type_t *typehash_insert(type_t *type)
375 return _typehash_insert(&typehash, type);