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/* -*- mode: objc; coding: utf-8 -*- */
#import "libobjcl.h"
#import "Foundation/Foundation.h"
#include <stdarg.h>
#include <objc/objc-api.h>
static NSAutoreleasePool *objcl_autorelease_pool = NULL;
void
objcl_initialise_runtime ()
{
objcl_autorelease_pool = [[NSAutoreleasePool alloc] init];
}
void
objcl_shutdown_runtime ()
{
[objcl_autorelease_pool release];
}
#define _OBJCL_ARG_CASE(typespec, field_name) \
case typespec: \
memmove (buffer, &argdata->data.field_name##_val, \
objc_sizeof_type (argdata->type)); \
break;
static void
_objcl_get_arg_pointer (void *buffer, OBJCL_OBJ_DATA argdata)
{
switch (argdata->type[0])
{
_OBJCL_ARG_CASE(_C_ID, id);
_OBJCL_ARG_CASE(_C_CLASS, id);
_OBJCL_ARG_CASE(_C_SEL, sel);
_OBJCL_ARG_CASE(_C_CHR, char);
_OBJCL_ARG_CASE(_C_UCHR, char);
_OBJCL_ARG_CASE(_C_SHT, short);
_OBJCL_ARG_CASE(_C_USHT, short);
_OBJCL_ARG_CASE(_C_INT, int);
_OBJCL_ARG_CASE(_C_UINT, int);
_OBJCL_ARG_CASE(_C_LNG, long);
_OBJCL_ARG_CASE(_C_ULNG, long);
_OBJCL_ARG_CASE(_C_LNG_LNG, long_long);
_OBJCL_ARG_CASE(_C_ULNG_LNG, long_long);
_OBJCL_ARG_CASE(_C_FLT, float);
_OBJCL_ARG_CASE(_C_DBL, double);
_OBJCL_ARG_CASE(_C_BOOL, bool);
_OBJCL_ARG_CASE(_C_PTR, ptr);
_OBJCL_ARG_CASE(_C_CHARPTR, charptr);
/*
_OBJCL_ARG_CASE(_C_VOID, void);
_OBJCL_ARG_CASE(_C_BFLD, bitfield);
_OBJCL_ARG_CASE(_C_ATOM, atom);
_OBJCL_ARG_CASE(_C_ARY_B, );
_OBJCL_ARG_CASE(_C_UNION_B, );
_OBJCL_ARG_CASE(_C_STRUCT_B, );
_OBJCL_ARG_CASE(_C_VECTOR, );
_OBJCL_ARG_CASE(_C_COMPLEX, );
*/
case _C_UNDEF:
default:
NSLog (@"Dammit. What the heck is `%s' supposed to mean?",
argdata->type);
break;
}
}
static void
_objcl_invoke_method (id self_,
OBJCL_OBJ_DATA result,
NSMethodSignature *signature,
SEL selector,
int argc,
va_list arglist)
{
int i;
NSInvocation *invocation;
void *result_ptr = NULL;
const char *type = [signature methodReturnType];
result->type = malloc (strlen (type) + 1);
strcpy (result->type, type);
if (signature == NULL)
{
[[NSException exceptionWithName: @"MLKNoSignatureFoundException"
reason: @"No signature found"
userInfo: NULL] raise];
}
switch (type[0])
{
case _C_ID: result_ptr = &(result->data.id_val); break;
case _C_CLASS: result_ptr = &result->data.id_val; break;
case _C_SEL: result_ptr = &result->data.sel_val; break;
case _C_CHR: result_ptr = &result->data.char_val; break;
case _C_UCHR: result_ptr = &result->data.char_val; break;
case _C_SHT: result_ptr = &result->data.short_val; break;
case _C_USHT: result_ptr = &result->data.short_val; break;
case _C_INT: result_ptr = &result->data.int_val; break;
case _C_UINT: result_ptr = &result->data.int_val; break;
case _C_LNG: result_ptr = &result->data.long_val; break;
case _C_ULNG: result_ptr = &result->data.long_val; break;
case _C_LNG_LNG: result_ptr = &result->data.long_long_val; break;
case _C_ULNG_LNG: result_ptr = &result->data.long_long_val; break;
case _C_FLT: result_ptr = &result->data.float_val; break;
case _C_DBL: result_ptr = &result->data.double_val; break;
case _C_BOOL: result_ptr = &result->data.bool_val; break;
case _C_PTR: result_ptr = &result->data.ptr_val; break;
case _C_CHARPTR: result_ptr = &result->data.charptr_val; break;
/*
case _C_BFLD: result_ptr = &result->data._val; break;
case _C_VOID: result_ptr = &result->data._val; break;
case _C_UNDEF: result_ptr = &result->data._val; break;
case _C_ATOM: result_ptr = &result->data._val; break;
case _C_ARY_B: result_ptr = &result->data._val; break;
case _C_ARY_E: result_ptr = &result->data._val; break;
case _C_UNION_B: result_ptr = &result->data._val; break;
case _C_UNION_E: result_ptr = &result->data._val; break;
case _C_STRUCT_B: result_ptr = &result->data._val; break;
case _C_STRUCT_E: result_ptr = &result->data._val; break;
case _C_VECTOR: result_ptr = &result->data._val; break;
case _C_COMPLEX: result_ptr = &result->data._val; break;
*/
}
invocation = [NSInvocation invocationWithMethodSignature: signature];
[invocation setTarget: self_];
[invocation setSelector: selector];
for (i = 0; i < argc; i++)
{
const char* type = [signature getArgumentTypeAtIndex: (i + 2)];
void *buffer = malloc (objc_sizeof_type (type));
OBJCL_OBJ_DATA arg = va_arg (arglist, OBJCL_OBJ_DATA);
_objcl_get_arg_pointer (buffer, arg);
if (type[0] == '#')
NSLog (@"Argument %d: %@ (type %s)", i, buffer, type);
else
NSLog (@"Argument %d: type %s.", i, type);
[invocation setArgument: buffer
atIndex: (i + 2)];
free (buffer);
}
[invocation retainArguments];
NSLog (@"Invoking %@ on %@.", invocation, self_);
[invocation invoke];
NSLog (@"Fetching return value.");
[invocation getReturnValue: result_ptr];
if (result->type[0] == '#')
NSLog (@"Returning: %@", result->data.id_val);
}
OBJCL_OBJ_DATA
objcl_invoke_method (OBJCL_OBJ_DATA receiver,
SEL method_selector,
int argc,
...)
{
va_list arglist;
id self_ = NULL;
NSMethodSignature *signature;
OBJCL_OBJ_DATA result = malloc (sizeof (struct objcl_object));
NS_DURING
{
assert (strcmp (receiver->type, @encode (Class)) == 0
|| strcmp (receiver->type, @encode (id)) == 0
|| receiver->type[0] == 'E');
switch (receiver->type[0])
{
case '#': self_ = receiver->data.class_val;
case '@': self_ = receiver->data.id_val;
case 'E': self_ = receiver->data.exc_val;
}
signature = [self_ methodSignatureForSelector: method_selector];
va_start (arglist, argc);
_objcl_invoke_method (self_,
result,
signature,
method_selector,
argc,
arglist);
va_end (arglist);
}
NS_HANDLER
{
result->type = malloc (strlen (EXCEPTION_TYPESPEC) + 1);
strcpy (result->type, EXCEPTION_TYPESPEC);
result->data.exc_val = localException;
NS_VALUERETURN (result, void *);
}
NS_ENDHANDLER
return result;
}
OBJCL_OBJ_DATA
objcl_find_class (const char *class_name)
{
Class class =
NSClassFromString ([NSString stringWithUTF8String: class_name]);
OBJCL_OBJ_DATA result = malloc (sizeof (struct objcl_object));
const char *const typespec = @encode (Class);
result->type = malloc (strlen (typespec) + 1);
strcpy (result->type, typespec);
result->data.class_val = class;
return result;
}
OBJCL_OBJ_DATA
objcl_find_selector (const char *class_name)
{
SEL selector =
NSSelectorFromString ([NSString stringWithUTF8String: class_name]);
OBJCL_OBJ_DATA result = malloc (sizeof (struct objcl_object));
const char *const typespec = @encode (SEL);
result->type = malloc (strlen (typespec) + 1);
strcpy (result->type, typespec);
result->data.sel_val = selector;
return result;
}
const char *
objcl_class_name (OBJCL_OBJ_DATA class)
{
const char *ns_name;
char *name;
Class cls = NULL;
assert (strcmp (class->type, @encode (Class)) == 0
|| strcmp (class->type, @encode (id)) == 0
|| class->type[0] == 'E');
switch (class->type[0])
{
case '#': cls = class->data.class_val;
case '@': cls = class->data.id_val;
case 'E': cls = (id) class->data.exc_val;
}
ns_name = [(NSStringFromClass (cls)) UTF8String];
name = malloc (strlen (ns_name) + 1);
strcpy (name, ns_name);
return name;
}
const char *
objcl_selector_name (OBJCL_OBJ_DATA selector)
{
const char *ns_name;
char *name;
assert (strcmp (selector->type, @encode (SEL)) == 0);
ns_name = [(NSStringFromSelector (selector->data.sel_val))
UTF8String];
name = malloc (strlen (ns_name) + 1);
strcpy (name, ns_name);
return name;
}
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