+/*
+ * This file is part of cparser.
+ * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
#include <config.h>
+#include <stdbool.h>
+
#include "type_hash.h"
#include "adt/error.h"
#undef HashSetIterator
#undef HashSet
-static
-unsigned hash_ptr(const void *ptr)
+/* TODO: ^= is a bad way of combining hashes since most addresses are very
+ * similar */
+
+static unsigned hash_ptr(const void *ptr)
{
unsigned ptr_int = ((char*) ptr - (char*) NULL);
return ptr_int >> 3;
}
-static
-unsigned hash_atomic_type(const atomic_type_t *type)
+static unsigned hash_atomic_type(const atomic_type_t *type)
{
unsigned some_prime = 27644437;
+ unsigned result = type->akind * some_prime;
- return type->atype * some_prime;
+ return result;
}
-static
-unsigned hash_pointer_type(const pointer_type_t *type)
+static unsigned hash_pointer_type(const pointer_type_t *type)
{
return hash_ptr(type->points_to);
}
-static
-unsigned hash_compound_type(const compound_type_t *type)
+static unsigned hash_array_type(const array_type_t *type)
{
- unsigned result = hash_ptr(type->symbol);
+ return hash_ptr(type->element_type);
+}
- return result;
+static unsigned hash_compound_type(const compound_type_t *type)
+{
+ return hash_ptr(type->declaration);
}
-static
-unsigned hash_type(const type_t *type);
+static unsigned hash_type(const type_t *type);
-static
-unsigned hash_method_type(const method_type_t *type)
+static unsigned hash_function_type(const function_type_t *type)
{
- unsigned result = hash_ptr(type->result_type);
+ unsigned result = hash_ptr(type->return_type);
- method_parameter_type_t *parameter = type->parameter_types;
+ function_parameter_t *parameter = type->parameters;
while(parameter != NULL) {
- result ^= hash_ptr(parameter->type);
+ result ^= hash_ptr(parameter->type);
parameter = parameter->next;
}
return result;
}
-static
-unsigned hash_enum_type(const enum_type_t *type)
+static unsigned hash_enum_type(const enum_type_t *type)
+{
+ return hash_ptr(type->declaration);
+}
+
+static unsigned hash_typeof_type(const typeof_type_t *type)
{
- unsigned result = hash_ptr(type->symbol);
+ unsigned result = hash_ptr(type->expression);
+ result ^= hash_ptr(type->typeof_type);
- /* TODO */
+ return result;
+}
+
+static unsigned hash_bitfield_type(const bitfield_type_t *type)
+{
+ unsigned result = hash_ptr(type->base);
+ result ^= 27172145;
return result;
}
-static
-unsigned hash_type(const type_t *type)
+static unsigned hash_type(const type_t *type)
{
- unsigned hash;
+ unsigned hash = 0;
- switch(type->type) {
+ switch(type->kind) {
case TYPE_INVALID:
panic("internalizing void or invalid types not possible");
return 0;
+ case TYPE_ERROR:
+ return 0;
case TYPE_ATOMIC:
- hash = hash_atomic_type((const atomic_type_t*) type);
+ hash = hash_atomic_type(&type->atomic);
break;
case TYPE_ENUM:
- hash = hash_enum_type((const enum_type_t*) type);
+ hash = hash_enum_type(&type->enumt);
break;
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION:
- hash = hash_compound_type((const compound_type_t*) type);
+ hash = hash_compound_type(&type->compound);
break;
- case TYPE_METHOD:
- hash = hash_method_type((const method_type_t*) type);
+ case TYPE_FUNCTION:
+ hash = hash_function_type(&type->function);
break;
case TYPE_POINTER:
- hash = hash_pointer_type((const pointer_type_t*) type);
+ hash = hash_pointer_type(&type->pointer);
+ break;
+ case TYPE_ARRAY:
+ hash = hash_array_type(&type->array);
break;
case TYPE_BUILTIN:
- hash = hash_ptr(((const builtin_type_t*) type)->symbol);
+ hash = hash_ptr(type->builtin.symbol);
+ break;
+ case TYPE_TYPEDEF:
+ hash = hash_ptr(type->typedeft.declaration);
+ break;
+ case TYPE_TYPEOF:
+ hash = hash_typeof_type(&type->typeoft);
+ break;
+ case TYPE_BITFIELD:
+ hash = hash_bitfield_type(&type->bitfield);
break;
}
unsigned some_prime = 99991;
- hash ^= some_prime * type->qualifiers;
+ hash ^= some_prime * type->base.qualifiers;
return hash;
}
-static
-int atomic_types_equal(const atomic_type_t *type1, const atomic_type_t *type2)
-{
- return type1->atype == type2->atype;
-}
-
-static
-int compound_types_equal(const compound_type_t *type1,
- const compound_type_t *type2)
+static bool atomic_types_equal(const atomic_type_t *type1,
+ const atomic_type_t *type2)
{
- if(type1->type.type != type2->type.type)
- return 0;
- if(type1->symbol != type2->symbol)
- return 0;
-
- declaration_t *entry1 = type1->context.declarations;
- declaration_t *entry2 = type2->context.declarations;
-
- while(entry1 != NULL && entry2 != NULL) {
- if(entry1->type != entry2->type)
- return 0;
- if(entry1->symbol != entry2->symbol)
- return 0;
- entry1 = entry1->next;
- entry2 = entry2->next;
- }
- if(entry1 != NULL || entry2 != NULL)
- return 0;
-
- return 1;
+ return type1->akind == type2->akind;
}
-static
-int method_types_equal(const method_type_t *type1, const method_type_t *type2)
+static bool function_types_equal(const function_type_t *type1,
+ const function_type_t *type2)
{
- if(type1->result_type != type2->result_type)
- return 0;
-
- method_parameter_type_t *param1 = type1->parameter_types;
- method_parameter_type_t *param2 = type2->parameter_types;
+ if(type1->return_type != type2->return_type)
+ return false;
+ if(type1->variadic != type2->variadic)
+ return false;
+ if(type1->unspecified_parameters != type2->unspecified_parameters)
+ return false;
+ if(type1->kr_style_parameters != type2->kr_style_parameters)
+ return false;
+
+ function_parameter_t *param1 = type1->parameters;
+ function_parameter_t *param2 = type2->parameters;
while(param1 != NULL && param2 != NULL) {
if(param1->type != param2->type)
- return 0;
+ return false;
param1 = param1->next;
param2 = param2->next;
}
if(param1 != NULL || param2 != NULL)
- return 0;
+ return false;
- return 1;
+ return true;
}
-static
-int pointer_types_equal(const pointer_type_t *type1,
- const pointer_type_t *type2)
+static bool pointer_types_equal(const pointer_type_t *type1,
+ const pointer_type_t *type2)
{
return type1->points_to == type2->points_to;
}
-static
-int enum_types_equal(const enum_type_t *type1, const enum_type_t *type2)
+static bool array_types_equal(const array_type_t *type1,
+ const array_type_t *type2)
{
- if(type1->symbol != NULL && type1->symbol == type2->symbol)
- return 1;
-
- enum_entry_t *entry1 = type1->entries;
- enum_entry_t *entry2 = type2->entries;
- while(entry1 != NULL && entry2 != NULL) {
- if(entry1->symbol != entry2->symbol)
- return 0;
- /* TODO: compare expressions */
- entry1 = entry1->next;
- entry2 = entry2->next;
- }
- if(entry1 != NULL || entry2 != NULL)
- return 0;
-
- return 1;
+ if(type1->element_type != type2->element_type)
+ return false;
+ if(type1->is_variable != type2->is_variable)
+ return false;
+ if(type1->is_static != type2->is_static)
+ return false;
+ if(type1->size_constant != type2->size_constant)
+ return false;
+
+ /* never identify vla types, because we need them for caching calculated
+ * sizes later in ast2firm */
+ if(type1->is_vla || type2->is_vla)
+ return false;
+
+ /* TODO: compare size expressions for equality... */
+
+ return false;
}
-static
-int builtin_types_equal(const builtin_type_t *type1,
- const builtin_type_t *type2)
+static bool builtin_types_equal(const builtin_type_t *type1,
+ const builtin_type_t *type2)
{
return type1->symbol == type2->symbol;
}
-static
-int types_equal(const type_t *type1, const type_t *type2)
+static bool compound_types_equal(const compound_type_t *type1,
+ const compound_type_t *type2)
{
- if(type1 == type2)
- return 1;
- if(type1->type != type2->type)
- return 0;
- if(type1->qualifiers != type2->qualifiers)
- return 0;
+ return type1->declaration == type2->declaration;
+}
+
+static bool enum_types_equal(const enum_type_t *type1,
+ const enum_type_t *type2)
+{
+ return type1->declaration == type2->declaration;
+}
+
+static bool typedef_types_equal(const typedef_type_t *type1,
+ const typedef_type_t *type2)
+{
+ return type1->declaration == type2->declaration;
+}
+
+static bool typeof_types_equal(const typeof_type_t *type1,
+ const typeof_type_t *type2)
+{
+ if(type1->expression != type2->expression)
+ return false;
+ if(type1->typeof_type != type2->typeof_type)
+ return false;
+
+ return true;
+}
+
+static bool bitfield_types_equal(const bitfield_type_t *type1,
+ const bitfield_type_t *type2)
+{
+ if(type1->base != type2->base)
+ return false;
+ /* TODO: compare size expression */
+ return false;
+}
- switch(type1->type) {
+static bool types_equal(const type_t *type1, const type_t *type2)
+{
+ if(type1 == type2)
+ return true;
+ if(type1->kind != type2->kind)
+ return false;
+ if(type1->base.qualifiers != type2->base.qualifiers)
+ return false;
+
+ switch(type1->kind) {
+ case TYPE_ERROR:
+ /* Hmm, the error type is never equal */
+ return false;
case TYPE_INVALID:
- return 0;
+ return false;
case TYPE_ATOMIC:
- return atomic_types_equal((const atomic_type_t*) type1,
- (const atomic_type_t*) type2);
+ return atomic_types_equal(&type1->atomic, &type2->atomic);
+ case TYPE_ENUM:
+ return enum_types_equal(&type1->enumt, &type2->enumt);
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION:
- return compound_types_equal((const compound_type_t*) type1,
- (const compound_type_t*) type2);
- case TYPE_ENUM:
- return enum_types_equal((const enum_type_t*) type1,
- (const enum_type_t*) type2);
- case TYPE_METHOD:
- return method_types_equal((const method_type_t*) type1,
- (const method_type_t*) type2);
+ return compound_types_equal(&type1->compound, &type2->compound);
+ case TYPE_FUNCTION:
+ return function_types_equal(&type1->function, &type2->function);
case TYPE_POINTER:
- return pointer_types_equal((const pointer_type_t*) type1,
- (const pointer_type_t*) type2);
+ return pointer_types_equal(&type1->pointer, &type2->pointer);
+ case TYPE_ARRAY:
+ return array_types_equal(&type1->array, &type2->array);
case TYPE_BUILTIN:
- return builtin_types_equal((const builtin_type_t*) type1,
- (const builtin_type_t*) type2);
+ return builtin_types_equal(&type1->builtin, &type2->builtin);
+ case TYPE_TYPEOF:
+ return typeof_types_equal(&type1->typeoft, &type2->typeoft);
+ case TYPE_TYPEDEF:
+ return typedef_types_equal(&type1->typedeft, &type2->typedeft);
+ case TYPE_BITFIELD:
+ return bitfield_types_equal(&type1->bitfield, &type2->bitfield);
}
abort();
projects / cparser / blobdiff