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- /*
- * objc-class.h
- * Copyright 1988, NeXT, Inc.
- */
-
- #ifndef _OBJC_CLASS_H_
- #define _OBJC_CLASS_H_
-
- #import <objc/objc.h>
- #import <objc/zone.h>
- /*
- * Class Template
- */
- struct objc_class {
- struct objc_class *isa;
- struct objc_class *super_class;
- const char *name;
- long version;
- long info;
- long instance_size;
- struct objc_ivar_list *ivars;
- struct objc_method_list *methods;
- struct objc_cache *cache;
- struct objc_protocol_list *protocols;
- };
- #define CLS_GETINFO(cls,infomask) ((cls)->info & infomask)
- #define CLS_SETINFO(cls,infomask) ((cls)->info |= infomask)
-
- #define CLS_CLASS 0x1L
- #define CLS_META 0x2L
- #define CLS_INITIALIZED 0x4L
- #define CLS_POSING 0x8L
- #define CLS_MAPPED 0x10L
- #define CLS_FLUSH_CACHE 0x20L
- /*
- * Category Template
- */
- typedef struct objc_category E( egory;
-
- struct objc_category {
- char *category_name;
- char *class_name;
- struct objc_method_list *instance_methods;
- struct objc_method_list *class_methods;
- struct objc_protocol_list *protocols;
- };
- /*
- * Instance Variable Template
- */
- typedef struct objc_ivar *Ivar;
-
- struct objc_ivar_list {
- int ivar_count;
- struct objc_ivar {
- char *ivar_name;
- char *ivar_type;
- int ivar_offset;
- } ivar_list[1]; /* variable length structure */
- };
- /*
- * Method Template
- */
- typedef struct objc_method *Method;
-
- struct objc_method_list {
- struct objc_method_list *method_next;
- int method_count;
- struct objc_method {
- SEL method_name;
- char *method_types;
- IMP method_imp;
- } method_list[1]; /* variable length structure */
- };
-
- /* Protocol support */
-
- @class Protocol;
-
- struct objc_protocol_list {
- struct objc_protocol_list *next;
- int count;
- Protocol *list[1];
- };
-
- /* Definitions of filer types */
-
- #define _C_ID '@'
- #define _C_CLASS '#'
- #define _C_SEL ':'
- #define _C_CHR 'c'
- #define _C_UCHR 'C'
- #define _C_SHT 's'
- #define _C_USHT 'S'
- #define _C_INT 'i'
- #define _C_UINT 'I'
- #define _C_LNG 'l'
- #define _C_ULNG 'L'
- #define _C_FLT 'f'
- #define _C_DBL 'd'
- #define _C_BFLD 'b'
- #define _C_VOID 'v'
- #define _C_UNDEF '?'
- #define _C_PTR '^'
- #define _C_CHARPTR '*'
- #define _C_ARY_B '['
- #define _C_ARY_E ']'
- #define _C_UNION_B '('
- #define _C_UNION_E ')'
- #define _C_STRUCT_B '{'
- #define _C_STRUCT_E '}'
-
- /* Structure for method cache - allocated/sized at runtime */
-
- typedef struct objc_cache *Cache;
-
- struct objc_cache {
- unsigned int mask; /* total = mask + 1 */
- unsigned int occupied;
- Method buckets[1];
- };
-
- /* operations */
-
- extern id class_createInstance(Class, unsigned idxIvars);
- extern id class_createInstanceFromZone(Class, unsigned idxIvars, NXZone *zone);
-
- extern void class_setVersion(Class, int);
- extern int class_getVersion(Class);
-
- extern Ivar class_getInstanceVariable(Class, const char *);
- extern Method class_getInstanceMethod(Class, SEL);
- extern Method class_getClassMethod(Class, SEL);
-
- extern void class_addMethods(Class, struct objc_method_list *);
- extern void class_removeMethods(Class, struct objc_method_list *);
-
- extern Class class_poseAs(Class imposter, Class original);
-
- extern unsigned method_getNumberOfArguments(Method);
- extern unsigned method_getSizeOfArguments(Method);
- exterE(signed method_getArgumentInfo(Method m, int arg, const char **type, int *offset);
-
- typedef void *marg_list;
-
- #define marg_getRef(margs, offset, type) \
- ( (type *)((char *)margs + offset) )
-
- #define marg_getValue(margs, offset, type) \
- ( *marg_getRef(margs, offset, type) )
-
- #define marg_setValue(margs, offset, type, value) \
- ( marg_getValue(margs, offset, type) = (value) )
-
- #endif /* _OBJC_CLASS_H_ */
-