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/* -*- mode: objc; coding: utf-8 -*- */
#import "libobjcl.h"
#import "libffi_support.h"
#import "objc_support.h"
#import <Foundation/Foundation.h>
#include <stdarg.h>
#include <objc/objc-api.h>
#ifdef __NEXT_RUNTIME__
#include <objc/objc-class.h>
#endif
static NSAutoreleasePool *objcl_autorelease_pool = NULL;
/* Preallocate an exception to throw when memory is all used up. */
NSException *objcl_oom_exception;
void
objcl_initialise_runtime (void)
{
objcl_autorelease_pool = [[NSAutoreleasePool alloc] init];
objcl_oom_exception = [NSException exceptionWithName: @"MLKOutOfMemoryException"
reason: @"Out of memory"
userInfo: nil];
}
void
objcl_shutdown_runtime (void)
{
[objcl_autorelease_pool release];
}
#ifdef USE_LIBFFI
id
objcl_invoke_with_types (int argc,
char *return_typespec,
char *arg_typespecs[],
void *return_value,
void **argv)
{
IMP method;
int i;
ffi_cif cif;
ffi_type *return_type;
ffi_type *arg_types[argc + 2];
ffi_status status;
id receiver = *((id*)argv[0]);
SEL method_selector = *((SEL*)argv[1]);
static ffi_type *id_type = NULL;
static ffi_type *sel_type = NULL;
if (!id_type)
id_type = objcl_pyobjc_arg_signature_to_ffi_type ("@");
if (!sel_type)
sel_type = objcl_pyobjc_arg_signature_to_ffi_type (":");
NS_DURING
{
#ifdef __NEXT_RUNTIME__
method = class_getInstanceMethod ([receiver class], method_selector)->method_imp;
#else
method = objc_msg_lookup (receiver, method_selector);
/* Alternatively:
method = [receiver methodForSelector: method_selector];
*/
#endif
if (method == NULL)
[[NSException exceptionWithName: @"MLKNoApplicableMethod"
reason: @"Tried to call a non-existent method."
userInfo: nil] raise];
return_type = objcl_pyobjc_signature_to_ffi_return_type (return_typespec);
arg_types[0] = id_type;
arg_types[1] = sel_type;
for (i = 0; i < argc; i++)
arg_types[i + 2] = objcl_pyobjc_arg_signature_to_ffi_type (arg_typespecs[i]);
status = ffi_prep_cif (&cif, FFI_DEFAULT_ABI, argc + 2, return_type, arg_types);
if (status != FFI_OK)
{
[[NSException exceptionWithName: @"MLKInvalidFFITypeException"
reason: @"FFI type is invalid (this is probably a bug)."
userInfo: nil] raise];
}
ffi_call (&cif, FFI_FN (method), return_value, argv);
}
NS_HANDLER
{
NS_VALUERETURN (localException, id);
}
NS_ENDHANDLER
return NULL;
}
#endif
Class
objcl_find_class (const char *class_name)
{
return NSClassFromString ([NSString stringWithUTF8String: class_name]);
}
SEL
objcl_find_selector (const char *class_name)
{
return NSSelectorFromString ([NSString stringWithUTF8String: class_name]);
}
const char *
objcl_class_name (Class class)
{
const char *ns_name;
char *name;
ns_name = [(NSStringFromClass (class)) UTF8String];
name = malloc (strlen (ns_name) + 1);
strcpy (name, ns_name);
return name;
}
const char *
objcl_selector_name (SEL selector)
{
const char *ns_name;
char *name;
ns_name = [(NSStringFromSelector (selector)) UTF8String];
name = malloc (strlen (ns_name) + 1);
strcpy (name, ns_name);
return name;
}
IMP
objcl_get_method_implementation (id object,
SEL selector)
{
#ifdef __NEXT_RUNTIME__
if (objcl_object_is_class (object))
{
return class_getClassMethod (object, selector)->method_imp;
}
else
{
return class_getInstanceMethod ([object class], selector)->method_imp;
}
#else
return objc_msg_lookup (object, selector);
#endif
}
BOOL
objcl_object_is_class (id obj)
{
#ifdef __NEXT_RUNTIME__
return [obj class] == obj;
#else
/* return CLS_ISCLASS (obj); */
return object_is_class (obj);
#endif
}
BOOL
objcl_object_is_meta_class (id obj)
{
#ifdef __NEXT_RUNTIME__
/* FIXME: What to do here? */
return objcl_object_get_meta_class (obj) == obj;
#else
/* return CLS_ISMETA (ptr); */
if (objcl_object_is_class (obj))
return class_is_meta_class (obj);
else
return object_is_meta_class (obj);
#endif
}
Class
objcl_object_get_class (id obj)
{
#ifdef __NEXT_RUNTIME__
/* XXX? return obj->isa; */
return [obj class];
#else
return object_get_class (obj);
#endif
}
Class
objcl_object_get_meta_class (id obj)
{
#ifdef __NEXT_RUNTIME__
/* FIXME: What to do here? */
return objc_getMetaClass ([(NSStringFromClass ([obj class])) UTF8String]);
#else
if (objcl_object_is_class (obj))
return class_get_meta_class (obj);
else
return object_get_meta_class (obj);
#endif
}
id
objcl_get_nil (void)
{
return nil;
}
long
objcl_get_yes (void)
{
if (sizeof (YES) > sizeof (long))
fprintf (stderr, "WARNING: objcl_get_yes: YES might not fit into a long.\n");
return YES;
}
long
objcl_get_no (void)
{
if (sizeof (NO) > sizeof (long))
fprintf (stderr, "WARNING: objcl_get_no: NO might not fit into a long.\n");
return NO;
}
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