htop/Object.h

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#ifndef HEADER_Object
#define HEADER_Object
/*
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htop - Object.h
(C) 2004-2012 Hisham H. Muhammad
(C) 2020 Red Hat, Inc. All Rights Reserved.
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Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "RichString.h"
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#include "XAlloc.h"
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typedef struct Object_ Object;
typedef void(*Object_Display)(Object*, RichString*);
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typedef long(*Object_Compare)(const void*, const void*);
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typedef void(*Object_Delete)(Object*);
#define Object_getClass(obj_) ((Object*)(obj_))->klass
#define Object_setClass(obj_, class_) Object_getClass(obj_) = (ObjectClass*) class_
#define Object_delete(obj_) Object_getClass(obj_)->delete((Object*)(obj_))
#define Object_displayFn(obj_) Object_getClass(obj_)->display
#define Object_display(obj_, str_) Object_getClass(obj_)->display((Object*)(obj_), str_)
#define Object_compare(obj_, other_) Object_getClass(obj_)->compare((const void*)(obj_), other_)
#define Class(class_) ((ObjectClass*)(&(class_ ## _class)))
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#define AllocThis(class_) (class_*) xMalloc(sizeof(class_)); Object_setClass(this, Class(class_));
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typedef struct ObjectClass_ {
const void* extends;
const Object_Display display;
const Object_Delete delete;
const Object_Compare compare;
} ObjectClass;
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struct Object_ {
ObjectClass* klass;
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};
typedef union {
int i;
void* v;
} Arg;
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extern ObjectClass Object_class;
#ifdef DEBUG
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bool Object_isA(Object* o, const ObjectClass* klass);
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#endif
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#endif