module.h

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/*
    MIT License
 
    Copyright (c) 2025 Robin A. Onsay
 
    Permission is hereby granted, free of charge, to any person obtaining
    a copy of this software and associated documentation files
    (the "Software"), to deal in the Software without restriction,
    including without limitation the rights to use, copy, modify, merge,
    publish, distribute, sublicense, and/or sell copies of the Software,
    and to permit persons to whom the Software is furnished to do so,
    subject to the following conditions:
 
    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.
*/
#ifndef JUNO_MODULE_H
#define JUNO_MODULE_H
 
#include "juno/status.h"
#include <stdint.h>
#define JUNO_MODULE_DECLARE(name)   typedef union name##_TAG name
#define JUNO_MODULE_BASE_DECLARE(name)   typedef struct name##_TAG name
#define JUNO_MODULE_DERIVE_DECLARE(name)   JUNO_MODULE_BASE_DECLARE(name)
 
#define JUNO_FAILURE_HANDLER    _pfcnFailureHandler
#define JUNO_FAILURE_USER_DATA    _pvFailurUserData
#define JUNO_MODULE_EMPTY
#define JUNO_MODULE_SUPER   tBase
 
#define JUNO_MODULE(name, API, base, derived) \
union name##_TAG \
{ \
    const API *ptApi; \
    base JUNO_MODULE_SUPER; \
    derived \
}
 
#define JUNO_MODULE_BASE(name, API, members) \
struct name##_TAG \
{ \
    const API *ptApi; \
    members \
    JUNO_FAILURE_HANDLER_T JUNO_FAILURE_HANDLER; \
    JUNO_USER_DATA_T *JUNO_FAILURE_USER_DATA; \
}
 
#define JUNO_MODULE_DERIVE(name, base, members) \
struct name##_TAG \
{ \
    base JUNO_MODULE_SUPER; \
    members \
}
 
#define JUNO_MODULE_GET_API(ptModule, MODULE_BASE_NAME) ((const MODULE_BASE_NAME *)ptModule)->ptApi
 
#endif // JUNO_MODULE_H