#ifdef __NEXT_RUNTIME__
#include <objc/objc-class.h>
#include <objc/Object.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#define objc_get_class(C) objc_getClass(C)
#define objc_get_meta_class(C) objc_getMetaClass(C)
#define class_get_class_method(C, S) class_getClassMethod(C, S)
#define class_get_instance_method(C, S) class_getInstanceMethod(C, S)
#define method_get_imp(M) (((Method)M)->method_imp)
#define sel_get_name(S) sel_getName(S)
#define class_create_instance(C) class_createInstance(C, 0)
#define class_get_class_name(C) object_getClassName(C)
#define class_get_super_class(C) (((struct objc_class *)C)->super_class)
#define object_get_super_class(O) class_get_super_class(*(struct objc_class **)O)
#define objc_lookup_class(N) objc_lookUpClass(N)
#define object_get_class(O) (*(struct objc_class **)O)
#define class_is_class(C) (CLS_GETINFO((struct objc_class *)C, CLS_CLASS)? YES: NO)
#define class_is_meta_class(C) (CLS_GETINFO((struct objc_class *)C, CLS_META)? YES: NO)
#define object_is_class(O) class_is_meta_class(*(struct objc_class **)O)
#define object_is_meta_class(O) (class_is_meta_class(O) && class_is_meta_class(*(struct objc_class **)O))
#ifndef NULL
#define NULL 0
#endif
#undef MAX
#undef MIN
#undef ROUND
#ifdef __cplusplus
#define MAX(X, Y) ((X > Y) ? X : Y)
#define MIN(X, Y) ((X < Y) ? X : Y)
#define ROUND(V, A) (A * ((V + A - 1) / A))
#else
#define MAX(X, Y) \
({ typeof (X) __x = (X), __y = (Y); \
(__x > __y ? __x : __y); })
#define MIN(X, Y) \
({ typeof (X) __x = (X), __y = (Y); \
(__x < __y ? __x : __y); })
#define ROUND(V, A) \
({ typeof (V) __v = (V); typeof (A) __a = (A); \
__a * ((__v+__a - 1)/__a); })
#endif
#define BITS_PER_UNIT __CHAR_BIT__
typedef struct{ char a; } __small_struct;
#define STRUCTURE_SIZE_BOUNDARY (BITS_PER_UNIT * sizeof (__small_struct))
#ifndef _C_LNG_LNG
#define _C_LNG_LNG 'q'
#endif
#ifndef _C_ULNG_LNG
#define _C_ULNG_LNG 'Q'
#endif
#ifndef _C_ATOM
#define _C_ATOM '%'
#endif
#ifndef _C_BOOL
#define _C_BOOL 'B'
#endif
#define _C_CONST 'r'
#define _C_IN 'n'
#define _C_INOUT 'N'
#define _C_OUT 'o'
#define _C_BYCOPY 'O'
#define _C_BYREF 'R'
#define _C_ONEWAY 'V'
#define _C_GCINVISIBLE '!'
#define _F_CONST 0x01
#define _F_IN 0x01
#define _F_OUT 0x02
#define _F_INOUT 0x03
#define _F_BYCOPY 0x04
#define _F_BYREF 0x08
#define _F_ONEWAY 0x10
#define _F_GCINVISIBLE 0x20
struct objc_struct_layout
{
const char *original_type;
const char *type;
const char *prev_type;
unsigned int record_size;
unsigned int record_align;
};
typedef union arglist {
char *arg_ptr;
char arg_regs[sizeof (char*)];
} *arglist_t;
const char *objc_skip_typespec (const char *type);
void objc_layout_structure_get_info (struct objc_struct_layout *layout,
unsigned int *offset, unsigned int *align, const char **type);
void objc_layout_structure (const char *type,
struct objc_struct_layout *layout);
BOOL objc_layout_structure_next_member (struct objc_struct_layout *layout);
void objc_layout_finish_structure (struct objc_struct_layout *layout,
unsigned int *size, unsigned int *align);
int objc_aligned_size (const char *type);
int
objc_sizeof_type (const char *type)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
switch (*type) {
case _C_ID:
return sizeof (id);
break;
case _C_CLASS:
return sizeof (Class);
break;
case _C_SEL:
return sizeof (SEL);
break;
case _C_CHR:
return sizeof (char);
break;
case _C_UCHR:
return sizeof (unsigned char);
break;
case _C_SHT:
return sizeof (short);
break;
case _C_USHT:
return sizeof (unsigned short);
break;
case _C_INT:
return sizeof (int);
break;
case _C_UINT:
return sizeof (unsigned int);
break;
case _C_LNG:
return sizeof (long);
break;
case _C_ULNG:
return sizeof (unsigned long);
break;
case _C_LNG_LNG:
return sizeof (long long);
break;
case _C_ULNG_LNG:
return sizeof (unsigned long long);
break;
case _C_FLT:
return sizeof (float);
break;
case _C_DBL:
return sizeof (double);
break;
case _C_PTR:
case _C_ATOM:
case _C_CHARPTR:
return sizeof (char *);
break;
case _C_ARY_B:
{
int len = atoi (type + 1);
while (isdigit ((unsigned char)*++type))
;
return len * objc_aligned_size (type);
}
break;
case _C_BFLD:
{
int size = atoi (type + 1);
return (size + BITS_PER_UNIT - 1) / BITS_PER_UNIT;
}
case _C_STRUCT_B:
{
struct objc_struct_layout layout;
unsigned int size;
objc_layout_structure (type, &layout);
while (objc_layout_structure_next_member (&layout))
;
objc_layout_finish_structure (&layout, &size, NULL);
return size;
}
case _C_UNION_B:
{
int max_size = 0;
while (*type != _C_UNION_E && *type++ != '=')
;
while (*type != _C_UNION_E)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
max_size = MAX (max_size, objc_sizeof_type (type));
type = objc_skip_typespec (type);
}
return max_size;
}
}
return 0;
}
int
objc_alignof_type (const char *type)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
switch (*type) {
case _C_ID:
return __alignof__ (id);
break;
case _C_CLASS:
return __alignof__ (Class);
break;
case _C_SEL:
return __alignof__ (SEL);
break;
case _C_CHR:
return __alignof__ (char);
break;
case _C_UCHR:
return __alignof__ (unsigned char);
break;
case _C_SHT:
return __alignof__ (short);
break;
case _C_USHT:
return __alignof__ (unsigned short);
break;
case _C_INT:
case _C_BFLD:
return __alignof__ (int);
break;
case _C_UINT:
return __alignof__ (unsigned int);
break;
case _C_LNG:
return __alignof__ (long);
break;
case _C_ULNG:
return __alignof__ (unsigned long);
break;
case _C_LNG_LNG:
return __alignof__ (long long);
break;
case _C_ULNG_LNG:
return __alignof__ (unsigned long long);
break;
case _C_FLT:
return __alignof__ (float);
break;
case _C_DBL:
return __alignof__ (double);
break;
case _C_PTR:
case _C_ATOM:
case _C_CHARPTR:
return __alignof__ (char *);
break;
case _C_ARY_B:
while (isdigit ((unsigned char)*++type))
;
return objc_alignof_type (type);
case _C_STRUCT_B:
{
struct objc_struct_layout layout;
unsigned int align;
objc_layout_structure (type, &layout);
while (objc_layout_structure_next_member (&layout))
;
objc_layout_finish_structure (&layout, NULL, &align);
return align;
}
case _C_UNION_B:
{
int maxalign = 0;
while (*type != _C_UNION_E && *type++ != '=')
;
while (*type != _C_UNION_E)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
maxalign = MAX (maxalign, objc_alignof_type (type));
type = objc_skip_typespec (type);
}
return maxalign;
}
}
return 0;
}
int
objc_aligned_size (const char *type)
{
int size, align;
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
size = objc_sizeof_type (type);
align = objc_alignof_type (type);
return ROUND (size, align);
}
int
objc_promoted_size (const char *type)
{
int size, wordsize;
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
size = objc_sizeof_type (type);
wordsize = sizeof (void *);
return ROUND (size, wordsize);
}
inline const char *
objc_skip_type_qualifiers (const char *type)
{
while (*type == _C_CONST
|| *type == _C_IN
|| *type == _C_INOUT
|| *type == _C_OUT
|| *type == _C_BYCOPY
|| *type == _C_BYREF
|| *type == _C_ONEWAY
|| *type == _C_GCINVISIBLE)
{
type += 1;
}
return type;
}
const char *
objc_skip_typespec (const char *type)
{
if (*type == '"')
{
for (type++; *type++ != '"';)
;
}
type = objc_skip_type_qualifiers (type);
switch (*type) {
case _C_ID:
if (*++type != '"')
return type;
else
{
while (*++type != '"')
;
return type + 1;
}
case _C_CLASS:
case _C_SEL:
case _C_CHR:
case _C_UCHR:
case _C_CHARPTR:
case _C_ATOM:
case _C_SHT:
case _C_USHT:
case _C_INT:
case _C_UINT:
case _C_LNG:
case _C_ULNG:
case _C_LNG_LNG:
case _C_ULNG_LNG:
case _C_FLT:
case _C_DBL:
case _C_VOID:
case _C_UNDEF:
return ++type;
break;
case _C_ARY_B:
while (isdigit ((unsigned char)*++type))
;
type = objc_skip_typespec (type);
if (*type == _C_ARY_E)
return ++type;
else
break;
case _C_BFLD:
while (isdigit ((unsigned char)*++type))
;
return type;
case _C_STRUCT_B:
while (*type != _C_STRUCT_E && *type++ != '=')
;
while (*type != _C_STRUCT_E)
{
type = objc_skip_typespec (type);
}
return ++type;
case _C_UNION_B:
while (*type != _C_UNION_E && *type++ != '=')
;
while (*type != _C_UNION_E)
{
type = objc_skip_typespec (type);
}
return ++type;
case _C_PTR:
return objc_skip_typespec (++type);
}
return 0;
}
inline const char *
objc_skip_offset (const char *type)
{
if (*type == '+')
type++;
while (isdigit ((unsigned char) *++type))
;
return type;
}
const char *
objc_skip_argspec (const char *type)
{
type = objc_skip_typespec (type);
type = objc_skip_offset (type);
return type;
}
int
method_get_number_of_arguments (struct objc_method *mth)
{
int i = 0;
const char *type = mth->method_types;
while (*type)
{
type = objc_skip_argspec (type);
i += 1;
}
return i - 1;
}
int
method_get_sizeof_arguments (struct objc_method *mth)
{
const char *type = objc_skip_typespec (mth->method_types);
return atoi (type);
}
char *
method_get_next_argument (arglist_t argframe, const char **type)
{
const char *t = objc_skip_argspec (*type);
if (*t == '\0')
return 0;
*type = t;
t = objc_skip_typespec (t);
if (*t == '+')
return argframe->arg_regs + atoi (++t);
else
return argframe->arg_ptr + atoi (t);
}
char *
method_get_first_argument (struct objc_method *m,
arglist_t argframe,
const char **type)
{
*type = m->method_types;
return method_get_next_argument (argframe, type);
}
char *
method_get_nth_argument (struct objc_method *m,
arglist_t argframe, int arg,
const char **type)
{
const char *t = objc_skip_argspec (m->method_types);
if (arg > method_get_number_of_arguments (m))
return 0;
while (arg--)
t = objc_skip_argspec (t);
*type = t;
t = objc_skip_typespec (t);
if (*t == '+')
return argframe->arg_regs + atoi (++t);
else
return argframe->arg_ptr + atoi (t);
}
unsigned
objc_get_type_qualifiers (const char *type)
{
unsigned res = 0;
BOOL flag = YES;
while (flag)
switch (*type++)
{
case _C_CONST: res |= _F_CONST; break;
case _C_IN: res |= _F_IN; break;
case _C_INOUT: res |= _F_INOUT; break;
case _C_OUT: res |= _F_OUT; break;
case _C_BYCOPY: res |= _F_BYCOPY; break;
case _C_BYREF: res |= _F_BYREF; break;
case _C_ONEWAY: res |= _F_ONEWAY; break;
case _C_GCINVISIBLE: res |= _F_GCINVISIBLE; break;
default: flag = NO;
}
return res;
}
void
objc_layout_structure (const char *type,
struct objc_struct_layout *layout)
{
const char *ntype;
layout->original_type = ++type;
ntype = type;
while (*ntype != _C_STRUCT_E && *ntype != _C_STRUCT_B && *ntype != _C_UNION_B
&& *ntype++ != '=')
;
if (*(ntype - 1) == '=')
type = ntype;
layout->type = type;
layout->prev_type = NULL;
layout->record_size = 0;
layout->record_align = MAX (BITS_PER_UNIT, STRUCTURE_SIZE_BOUNDARY);
}
BOOL
objc_layout_structure_next_member (struct objc_struct_layout *layout)
{
register int desired_align = 0;
const char *type;
if (layout->prev_type)
{
type = objc_skip_type_qualifiers (layout->prev_type);
if (*type != _C_BFLD)
layout->record_size += objc_sizeof_type (type) * BITS_PER_UNIT;
else
layout->record_size += atoi (++type);
}
if (*layout->type == _C_STRUCT_E)
return NO;
if (*layout->type == '"')
{
for (layout->type++; *layout->type++ != '"';)
;
}
type = objc_skip_type_qualifiers (layout->type);
desired_align = objc_alignof_type (type) * BITS_PER_UNIT;
layout->record_align = MAX (layout->record_align, desired_align);
if (*type == _C_BFLD)
{
int bfld_size = atoi (++type);
int int_align = __alignof__ (int) * BITS_PER_UNIT;
if (layout->record_size % int_align
&& (layout->record_size / int_align
< (layout->record_size + bfld_size - 1) / int_align))
layout->record_size = ROUND (layout->record_size, int_align);
}
else if (layout->record_size % desired_align != 0)
{
layout->record_size = ROUND (layout->record_size, desired_align);
}
layout->prev_type = layout->type;
layout->type = objc_skip_typespec (layout->type);
return YES;
}
void objc_layout_finish_structure (struct objc_struct_layout *layout,
unsigned int *size,
unsigned int *align)
{
if (layout->type && *layout->type == _C_STRUCT_E)
{
layout->record_size = ROUND (layout->record_size, layout->record_align);
layout->type = NULL;
}
if (size)
*size = layout->record_size / BITS_PER_UNIT;
if (align)
*align = layout->record_align / BITS_PER_UNIT;
}
void objc_layout_structure_get_info (struct objc_struct_layout *layout,
unsigned int *offset,
unsigned int *align,
const char **type)
{
if (offset)
*offset = layout->record_size / BITS_PER_UNIT;
if (align)
*align = layout->record_align / BITS_PER_UNIT;
if (type)
*type = layout->prev_type;
}
struct objc_class _NSConstantStringClassReference;
@interface NSConstantString : Object
{
char *c_string;
unsigned int len;
}
-(const char *) cString;
-(unsigned int) length;
@end
@implementation NSConstantString
-(const char *) cString
{
return (c_string);
}
-(unsigned int) length
{
return (len);
}
@end
void objc_constant_string_init (void) __attribute__((constructor));
void objc_constant_string_init (void) {
memcpy (&_NSConstantStringClassReference,
objc_getClass ("NSConstantString"),
sizeof (_NSConstantStringClassReference));
}
#endif