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/* This file is part of the PyObjC package. */
/*
* Support code for the Apple runtime
*/
#include "pyobjc.h"
#if defined(APPLE_RUNTIME)
#include "objc-runtime-apple.h"
int PyObjCRT_SetupClass(
Class cls,
Class metaCls,
const char*name,
Class superCls,
Class rootCls,
ssize_t ivarSize,
struct objc_ivar_list* ivarList,
struct objc_protocol_list* protocolList
)
{
/* Initialize the structure */
memset(cls, 0, sizeof(*cls));
memset(metaCls, 0, sizeof(*cls));
cls->methodLists = NULL;
metaCls->methodLists = NULL;
cls->isa = metaCls;
cls->info = CLS_CLASS; // |CLS_METHOD_ARRAY;
metaCls->info = CLS_META; // |CLS_METHOD_ARRAY;
cls->name = strdup(name);
if (cls->name == NULL) {
return -1;
}
metaCls->name = strdup(name);
if (metaCls->name == NULL) {
free((char*)(cls->name));
cls->name = NULL;
return -1;
}
cls->methodLists = malloc(sizeof(struct objc_method_list*));
if (cls->methodLists == NULL) {
PyErr_NoMemory();
free((char*)(cls->name));
cls->name = NULL;
free((char*)(metaCls->name));
metaCls->name = NULL;
return -1;
}
memset(cls->methodLists, 0, sizeof(*(cls->methodLists)));
metaCls->methodLists = malloc(sizeof(struct objc_method_list*));
if (cls->methodLists == NULL) {
PyErr_NoMemory();
free((char*)(cls->name));
cls->name = NULL;
free((char*)(metaCls->name));
metaCls->name = NULL;
free(cls->methodLists);
cls->methodLists = NULL;
return -1;
}
memset(metaCls->methodLists, 0, sizeof(*(metaCls->methodLists)));
/*
* This is MacOS X specific, and an undocumented feature (long live
* Open Source!).
*
* The code in the objc runtime assumes that the method lists are
* terminated by '-1', and will happily overwite existing data if
* they aren't.
*
* Ronald filed a bugreport for this: Radar #3317376
*/
cls->methodLists[0] = (struct objc_method_list*)-1;
metaCls->methodLists[0] = (struct objc_method_list*)-1;
cls->super_class = superCls;
metaCls->super_class = superCls->isa;
metaCls->isa = rootCls->isa;
cls->instance_size = ivarSize;
cls->ivars = ivarList;
metaCls->instance_size = metaCls->super_class->instance_size;
metaCls->ivars = NULL;
metaCls->protocols = cls->protocols = protocolList;
return 0;
}
void PyObjCRT_ClearClass(Class cls)
{
if (cls->methodLists) {
if (cls->methodLists) {
struct objc_method_list** cur;
cur = cls->methodLists;
while (*cur != (struct objc_method_list*)-1) {
if (*cur != NULL) {
free(*cur);
*cur = NULL;
}
cur++;
}
free(cls->methodLists);
cls->methodLists = NULL;
}
cls->methodLists = NULL;
}
if (cls->name) {
free((char*)(cls->name));
}
}
struct objc_method_list *PyObjCRT_AllocMethodList(ssize_t numMethods)
{
struct objc_method_list *mlist;
mlist = malloc(sizeof(struct objc_method_list)
+ ((numMethods+1) * sizeof(struct objc_method)));
if (mlist == NULL) {
return NULL;
}
mlist->method_count = 0;
mlist->obsolete = NULL;
return mlist;
}
struct objc_protocol_list* PyObjCRT_AllocProtocolList(ssize_t numProtocols)
{
struct objc_protocol_list *plist;
plist = malloc(sizeof(struct objc_protocol_list)
+ ((numProtocols+1) * sizeof(Protocol *)));
if (plist == NULL) {
return NULL;
}
plist->count = 0;
plist->next = NULL;
return plist;
}
#else /* !APPLE_RUNTIME */
static int dummy __attribute__((__unused__));
#endif /* !APPLE_RUNTIME */
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