X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=type_hash.c;h=369c76a158df310060c9e2fe7bffe99f68118362;hb=6d7d61de445629e1590d3a2ba2990ef7a651368a;hp=f4431d785afd8ee14066c9c7c37582a12e5b0189;hpb=0e1d34de4301d14030210420c33435d11459273f;p=cparser diff --git a/type_hash.c b/type_hash.c index f4431d7..369c76a 100644 --- a/type_hash.c +++ b/type_hash.c @@ -1,5 +1,26 @@ +/* + * This file is part of cparser. + * Copyright (C) 2007-2009 Matthias Braun + * + * 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 +#include + #include "type_hash.h" #include "adt/error.h" @@ -15,203 +36,327 @@ #undef HashSetIterator #undef HashSet -static -unsigned hash_ptr(const void *ptr) +typedef struct type_hash_iterator_t type_hash_iterator_t; +typedef struct type_hash_t type_hash_t; + +/* 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_complex_type(const complex_type_t *type) { - return hash_ptr(type->points_to); + unsigned some_prime = 27644437; + unsigned result = type->akind * some_prime; + + return result; } -static -unsigned hash_compound_type(const compound_type_t *type) +static unsigned hash_imaginary_type(const imaginary_type_t *type) { - unsigned result = hash_ptr(type->symbol); + unsigned some_prime = 27644437; + unsigned result = type->akind * some_prime; return result; } -static -unsigned hash_type(const type_t *type); +static unsigned hash_pointer_type(const pointer_type_t *type) +{ + return hash_ptr(type->points_to) ^ hash_ptr(type->base_variable); +} + +static unsigned hash_reference_type(const reference_type_t *type) +{ + return hash_ptr(type->refers_to); +} + +static unsigned hash_array_type(const array_type_t *type) +{ + return hash_ptr(type->element_type); +} + +static unsigned hash_compound_type(const compound_type_t *type) +{ + return hash_ptr(type->compound); +} -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; - while(parameter != NULL) { - result ^= hash_ptr(parameter->type); + function_parameter_t *parameter = type->parameters; + while (parameter != NULL) { + result ^= hash_ptr(parameter->type); parameter = parameter->next; } + result += type->modifiers; + result += type->linkage; + result += type->calling_convention; 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->enume); +} + +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_type); + 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"); + 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_COMPLEX: + hash = hash_complex_type(&type->complex); + break; + case TYPE_IMAGINARY: + hash = hash_imaginary_type(&type->imaginary); 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_REFERENCE: + hash = hash_reference_type(&type->reference); + 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.typedefe); + 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) +static bool atomic_types_equal(const atomic_type_t *type1, + const atomic_type_t *type2) { - return type1->atype == type2->atype; + return type1->akind == type2->akind; } -static -int compound_types_equal(const compound_type_t *type1, - const compound_type_t *type2) +static bool complex_types_equal(const complex_type_t *type1, + const complex_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 imaginary_types_equal(const imaginary_type_t *type1, + const imaginary_type_t *type2) { - if(type1->result_type != type2->result_type) - return 0; + return type1->akind == type2->akind; +} - method_parameter_type_t *param1 = type1->parameter_types; - method_parameter_type_t *param2 = type2->parameter_types; - while(param1 != NULL && param2 != NULL) { - if(param1->type != param2->type) - return 0; +static bool function_types_equal(const function_type_t *type1, + const function_type_t *type2) +{ + 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; + if (type1->linkage != type2->linkage) + return false; + if (type1->modifiers != type2->modifiers) + return false; + if (type1->calling_convention != type2->calling_convention) + 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 false; param1 = param1->next; param2 = param2->next; } - if(param1 != NULL || param2 != NULL) - return 0; + if (param1 != NULL || param2 != NULL) + 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; + return type1->points_to == type2->points_to && + type1->base_variable == type2->base_variable; } -static -int enum_types_equal(const enum_type_t *type1, const enum_type_t *type2) +static bool reference_types_equal(const reference_type_t *type1, + const reference_type_t *type2) { - /* TODO */ - return type1->symbol == type2->symbol; + return type1->refers_to == type2->refers_to; +} + +static bool array_types_equal(const array_type_t *type1, + const array_type_t *type2) +{ + 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->compound == type2->compound; +} - switch(type1->type) { +static bool enum_types_equal(const enum_type_t *type1, + const enum_type_t *type2) +{ + return type1->enume == type2->enume; +} + +static bool typedef_types_equal(const typedef_type_t *type1, + const typedef_type_t *type2) +{ + return type1->typedefe == type2->typedefe; +} + +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_type != type2->base_type) + return false; + /* TODO: compare size expression */ + return false; +} + +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_COMPLEX: + return complex_types_equal(&type1->complex, &type2->complex); + case TYPE_IMAGINARY: + return imaginary_types_equal(&type1->imaginary, &type2->imaginary); + 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_REFERENCE: + return reference_types_equal(&type1->reference, &type2->reference); + 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(); @@ -236,6 +381,7 @@ int types_equal(const type_t *type1, const type_t *type2) #define hashset_iterator_init typehash_iterator_init #define hashset_iterator_next typehash_iterator_next #define hashset_remove_iterator typehash_remove_iterator +#define SCALAR_RETURN #include "adt/hashset.c"