include/interface.h

Go to the documentation of this file.

#ifndef __INTERFACE_H__
#define __INTERFACE_H__

#include <sys/types.h>

#define MAX_IFACE       32      // ATTENTION: every iface_impl will use MAX_IFACE * sizeof(void*)

#define IFACE(name)             ((const struct i_##name const*)&i_##name##_impl)

#define INIT_IFACE(name,...) \
        static const struct i_##name i_##name##_impl = {&i_##name,__VA_ARGS__}

#define NUMARGS(...)    (sizeof((const void*[]){__VA_ARGS__})/sizeof(void*))

#define INIT_IMPL(...)  {NUMARGS(__VA_ARGS__), 0, {__VA_ARGS__}}
#define CREATE_IMPL(...) \
        static struct iface_impl iface_impl = INIT_IMPL(__VA_ARGS__)

#define METHOD_GET(iface,method)        (iface->method)


struct interface {
        const char * name;
        const size_t nmethods;
};
typedef const struct interface * iface_ptr;

struct iface_impl {
        const size_t nimpl;           // number of interface implementations
        char         simpl;           // implementations sorted??
        const void * impl[MAX_IFACE]; // implementations
};
typedef struct iface_impl * iface_impl_ptr;

extern struct interface * interfaceGet(iface_impl_ptr, const iface_ptr);

#endif // __INTERFACE_H__

// vim: set ts=4 sw=4: