mirror of
https://github.com/darlinghq/darling-libobjc2.git
synced 2025-01-16 14:07:55 +00:00
183 lines
4.1 KiB
C
183 lines
4.1 KiB
C
#include "objc/objc.h"
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#include "objc/objc-api.h"
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#include "lock.h"
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#include <stdlib.h>
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// Get the functions for string hashing
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#include "string_hash.h"
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static int protocol_compare(const char *name,
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const struct objc_protocol2 *protocol)
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{
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return string_compare(name, protocol->protocol_name);
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}
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static int protocol_hash(const struct objc_protocol2 *protocol)
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{
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return string_hash(protocol->protocol_name);
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}
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#define MAP_TABLE_NAME protocol
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#define MAP_TABLE_COMPARE_FUNCTION protocol_compare
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#define MAP_TABLE_HASH_KEY string_hash
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#define MAP_TABLE_HASH_VALUE protocol_hash
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#include "hash_table.h"
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static protocol_table *known_protocol_table;
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void __objc_init_protocol_table(void)
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{
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known_protocol_table = protocol_create(128);
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}
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static void protocol_table_insert(const struct objc_protocol2 *protocol)
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{
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protocol_insert(known_protocol_table, (void*)protocol);
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}
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struct objc_protocol2 *protocol_for_name(const char *protocol_name)
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{
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return protocol_table_get(known_protocol_table, protocol_name);
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}
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struct objc_method_description_list
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{
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int count;
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struct objc_method_description list[1];
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};
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static Class ObjC2ProtocolClass = 0;
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static int isEmptyProtocol(struct objc_protocol2 *aProto)
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{
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int isEmpty =
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((aProto->instance_methods == NULL) ||
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(aProto->instance_methods->count == 0)) &&
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((aProto->class_methods == NULL) ||
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(aProto->class_methods->count == 0)) &&
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((aProto->protocol_list == NULL) ||
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(aProto->protocol_list->count == 0));
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if (aProto->class_pointer == ObjC2ProtocolClass)
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{
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struct objc_protocol2 *p2 = (struct objc_protocol2*)aProto;
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isEmpty &= (p2->optional_instance_methods->count == 0);
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isEmpty &= (p2->optional_class_methods->count == 0);
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isEmpty &= (p2->properties->property_count == 0);
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isEmpty &= (p2->optional_properties->property_count == 0);
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}
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return isEmpty;
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}
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// FIXME: Make p1 adopt all of the stuff in p2
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static void makeProtocolEqualToProtocol(struct objc_protocol2 *p1,
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struct objc_protocol2 *p2)
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{
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#define COPY(x) p1->x = p2->x
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COPY(instance_methods);
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COPY(class_methods);
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COPY(protocol_list);
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if (p1->class_pointer == ObjC2ProtocolClass &&
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p2->class_pointer == ObjC2ProtocolClass)
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{
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COPY(optional_instance_methods);
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COPY(optional_class_methods);
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COPY(properties);
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COPY(optional_properties);
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}
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#undef COPY
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}
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struct objc_protocol2 *__objc_unique_protocol(struct objc_protocol2 *aProto)
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{
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if (ObjC2ProtocolClass == 0)
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{
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ObjC2ProtocolClass = objc_get_class("Protocol2");
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}
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struct objc_protocol2 *oldProtocol =
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protocol_for_name(aProto->protocol_name);
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if (NULL == oldProtocol)
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{
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// This is the first time we've seen this protocol, so add it to the
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// hash table and ignore it.
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protocol_table_insert(aProto);
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return aProto;
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}
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if (isEmptyProtocol(oldProtocol))
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{
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if (isEmptyProtocol(aProto))
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{
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return aProto;
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// Add protocol to a list somehow.
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}
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else
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{
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// This protocol is not empty, so we use its definitions
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makeProtocolEqualToProtocol(oldProtocol, aProto);
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return aProto;
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}
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}
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else
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{
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if (isEmptyProtocol(aProto))
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{
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makeProtocolEqualToProtocol(aProto, oldProtocol);
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return oldProtocol;
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}
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else
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{
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return oldProtocol;
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//FIXME: We should really perform a check here to make sure the
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//protocols are actually the same.
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}
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}
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}
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// Public functions:
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Protocol *objc_getProtocol(const char *name)
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{
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return (Protocol*)protocol_for_name(name);
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}
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BOOL protocol_conformsToProtocol(Protocol *p, Protocol *other)
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{
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return NO;
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}
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struct objc_method_description *protocol_copyMethodDescriptionList(Protocol *p,
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BOOL isRequiredMethod, BOOL isInstanceMethod, unsigned int *count)
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{
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*count = 0;
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return NULL;
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}
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Protocol **protocol_copyProtocolList(Protocol *p, unsigned int *count)
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{
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*count = 0;
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return NULL;
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}
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const char *protocol_getName(Protocol *p)
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{
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if (NULL != p)
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{
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return p->protocol_name;
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}
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return NULL;
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}
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BOOL protocol_isEqual(Protocol *p, Protocol *other)
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{
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if (NULL == p || NULL == other)
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{
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return NO;
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}
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if (p == other ||
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p->protocol_name == other->protocol_name ||
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0 == strcmp(p->protocol_name, other->protocol_name))
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{
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return YES;
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}
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return NO;
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}
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