Objectively
Ultra-lightweight object oriented framework for GNU C.
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Macros | Functions
Object.c File Reference
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "Object.h"

Go to the source code of this file.

Macros

#define _Class   _Object
 

Functions

Class * _Object (void)
 
static Object * copy (const Object *self)
 
static void dealloc (Object *self)
 
static String * description (const Object *self)
 
static int hash (const Object *self)
 
static Object * init (Object *self)
 
static void initialize (Class *clazz)
 
static bool isEqual (const Object *self, const Object *other)
 
static bool isKindOfClass (const Object *self, const Class *clazz)
 

Macro Definition Documentation

◆ _Class

#define _Class   _Object

Definition at line 31 of file Object.c.

Function Documentation

◆ _Object()

Class * _Object ( void  )

Definition at line 136 of file Object.c.

136 {
137 static Class *clazz;
138 static Once once;
139
140 do_once(&once, {
141 clazz = _initialize(&(const ClassDef) {
142 .name = "Object",
143 .instanceSize = sizeof(Object),
144 .interfaceOffset = offsetof(Object, interface),
145 .interfaceSize = sizeof(ObjectInterface),
146 .initialize = initialize,
147 });
148 });
149
150 return clazz;
151}
_initialize
Class * _initialize(const ClassDef *def)
Initializes the given Class.
Definition Class.c:86
initialize
static void initialize(Class *clazz)
Definition Object.c:121
Once
long Once
The Once type.
Definition Once.h:37
do_once
#define do_once(once, block)
Executes the given block at most one time.
Definition Once.h:43
ClassDef
ClassDefs are passed to _initialize via an archetype to initialize a Class.
Definition Class.h:41
Class
The runtime representation of a Class.
Definition Class.h:95
Object
Object is the root Class of The Objectively Class hierarchy.
Definition Object.h:46

◆ copy()

static Object * copy ( const Object *  self)
static

Definition at line 39 of file Object.c.

39 {
40
41 ident obj = calloc(1, self->clazz->def.instanceSize);
42 assert(obj);
43
44 Object *object = memcpy(obj, self, self->clazz->def.instanceSize);
45 object->referenceCount = 1;
46
47 return object;
48}
obj
#define obj
ident
void * ident
The identity type, similar to Objective-C id.
Definition Types.h:49
ClassDef::instanceSize
size_t instanceSize
The instance size (required).
Definition Class.h:69
Class::def
ClassDef def
The Class definition.
Definition Class.h:100
Object::clazz
Class * clazz
Every instance of Object begins with a pointer to its Class.
Definition Object.h:55

◆ dealloc()

static void dealloc ( Object *  self)
static

Definition at line 54 of file Object.c.

54 {
55
56 free(self);
57}

◆ description()

static String * description ( const Object *  self)
static

Definition at line 63 of file Object.c.

63 {
64
65 return $(alloc(String), initWithFormat, "%s@%p", self->clazz->def.name, self);
66}
alloc
#define alloc(type)
Allocate and initialize and instance of type.
Definition Class.h:176
initWithFormat
static DateFormatter * initWithFormat(DateFormatter *self, const char *fmt)
Definition DateFormatter.c:76
ClassDef::name
const char * name
The Class name (required).
Definition Class.h:84
String
UTF-8 strings.
Definition String.h:69

◆ hash()

static int hash ( const Object *  self)
static

Definition at line 72 of file Object.c.

72 {
73
74 uintptr_t addr = (uintptr_t) self;
75
76 return (int) ((13 * addr) ^ (addr >> 15));
77}

◆ init()

static Object * init ( Object *  self)
static

Definition at line 83 of file Object.c.

83 {
84
85 return self;
86}

◆ initialize()

static void initialize ( Class *  clazz)
static
See also
Class::initialize(Class *)

Definition at line 121 of file Object.c.

121 {
122
123 ((ObjectInterface *) clazz->interface)->copy = copy;
124 ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
125 ((ObjectInterface *) clazz->interface)->description = description;
126 ((ObjectInterface *) clazz->interface)->hash = hash;
127 ((ObjectInterface *) clazz->interface)->init = init;
128 ((ObjectInterface *) clazz->interface)->isEqual = isEqual;
129 ((ObjectInterface *) clazz->interface)->isKindOfClass = isKindOfClass;
130}
isKindOfClass
static bool isKindOfClass(const Object *self, const Class *clazz)
Definition Object.c:101
isEqual
static bool isEqual(const Object *self, const Object *other)
Definition Object.c:92
description
static String * description(const Object *self)
Definition Object.c:63
dealloc
static void dealloc(Object *self)
Definition Object.c:54
copy
static Object * copy(const Object *self)
Definition Object.c:39
init
static Object * init(Object *self)
Definition Object.c:83
hash
static int hash(const Object *self)
Definition Object.c:72
Class::interface
ident interface
The interface of the Class.
Definition Class.h:105
Object::hash
int hash(const Object *self)
Definition Array.c:129
Object::isEqual
bool isEqual(const Object *self, const Object *other)
Tests equality of the other Object.
Definition Array.c:145
Object::dealloc
void dealloc(Object *self)
Frees all resources held by this Object.
Definition Array.c:99

◆ isEqual()

static bool isEqual ( const Object *  self,
const Object *  other 
)
static

Definition at line 92 of file Object.c.

92 {
93
94 return self == other;
95}

◆ isKindOfClass()

static bool isKindOfClass ( const Object *  self,
const Class *  clazz 
)
static

Definition at line 101 of file Object.c.

101 {
102
103 assert(clazz);
104
105 const Class *c = self->clazz;
106 while (c) {
107 if (memcmp(c, clazz, sizeof(*c)) == 0) {
108 return true;
109 }
110 c = c->def.superclass;
111 }
112
113 return false;
114}
ClassDef::superclass
Class * superclass
The superclass (required). e.g. _Object().
Definition Class.h:89