bc18535a3e
2010-10-11 Nicola Pero <nicola.pero@meta-innovation.com>
* objc/objc.h: Updated comments.
* objc/objc-api.h: (object_copy): Added one argument; use a
#define to maintain backwards-compatibility. Moved
_objc_object_alloc, _objc_object_copy, _objc_object_dispose and
objc_get_uninstalled_dtable into
objc/deprecated/objc_get_uninstalled_dtable.h and
objc/deprecated/objc_object_alloc.h. Include these files.
* objc/deprecated/objc_get_uninstalled_dtable.h: New.
* objc/deprecated/objc_object_alloc.h: New.
* objc/runtime.h (set_getName): New.
(sel_getType): New.
(sel_getUid): New.
(sel_registerName): New.
(sel_registerTypedName): New.
(sel_isEqual): New.
(class_createInstance): New.
(object_copy): New.
(object_dispose): New.
* objects.c: Do not include tconfig.h. Include gc_typed.h if
building the garbage collection version.
(__objc_object_alloc): Removed.
(__objc_object_copy): Removed.
(__objc_object_dispose): Removed.
(class_createInstance): New from code in class_create_instance.
Cast second argument of GC_malloc_explicitly_typed. Use
objc_calloc. Do not call _objc_object_alloc.
(class_create_instance): Call class_createInstance.
(object_copy): Added extraBytes argument. Do not call
_objc_object_copy.
(object_dispose): Do not call _objc_object_dispose.
* memory.c (objc_free): When using garbage collection, mark the
argument as unused.
* selector.c (sel_getName): New.
(sel_get_name): Call sel_getName.
(sel_getType): New.
(sel_get_type): Call sel_getType.
(sel_registerName): New.
(sel_register_name): Call sel_registerName.
(sel_registerTypedName): New.
(sel_register_typed_name): Call sel_registerTypedName.
(sel_getUid): New.
(sel_get_uid): Call sel_getUid.
From-SVN: r165264
177 lines
6.6 KiB
Objective-C
177 lines
6.6 KiB
Objective-C
/* Basic data types for Objective C.
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Copyright (C) 1993, 1995, 1996, 2004, 2009,
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2010 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef __objc_INCLUDE_GNU
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#define __objc_INCLUDE_GNU
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/* This file contains the definition of the basic types used by the
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Objective-C language. It needs to be included to do almost
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anything with Objective-C.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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/* The current version of the GNU Objective-C Runtime library in
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compressed ISO date format. This should be updated any time a new
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version is released with changes to the public API (there is no
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need to update it if there were no API changes since the previous
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release). This macro is only defined starting with the GNU
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Objective-C Runtime shipped with GCC 4.6.0. If it is not defined,
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it is either an older version of the runtime, or another runtime.
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*/
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#define __GNU_LIBOBJC__ 20100911
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/*
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Definition of the boolean type.
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Compatibility note: the Apple/NeXT runtime defines a BOOL as a
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'signed char'. The GNU runtime uses an 'unsigned char'.
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Important: this could change and we could switch to 'typedef bool
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BOOL' in the future. Do not depend on the type of BOOL.
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*/
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#undef BOOL
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typedef unsigned char BOOL;
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#define YES (BOOL)1
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#define NO (BOOL)0
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/* The basic Objective-C types (SEL, Class, id) are defined as pointer
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to opaque structures. The details of the structures are private to
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the runtime and may potentially change from one version to the
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other.
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*/
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/* A SEL (selector) represents an abstract method (in the
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object-oriented sense) and includes all the details of how to
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invoke the method (which means its name, arguments and return
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types) but provides no implementation of its own. You can check
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whether a class implements a selector or not, and if you have a
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selector and know that the class implements it, you can use it to
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call the method for an object in the class.
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*/
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typedef const struct objc_selector *SEL;
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#include "deprecated/struct_objc_selector.h"
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/* A Class is a class (in the object-oriented sense). In Objective-C
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there is the complication that each Class is an object itself, and
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so belongs to a class too. This class that a class belongs to is
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called its 'meta class'.
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*/
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typedef struct objc_class *Class;
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#include "deprecated/MetaClass.h"
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#include "deprecated/struct_objc_class.h"
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/* An 'id' is an object of an unknown class. The way the object data
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is stored inside the object is private and what you see here is
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only the beginning of the actual struct. The first field is always
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a pointer to the Class that the object belongs to. If performance
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is paramount, you can use this knowledge to get the class of an
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object by doing '((id)object)->class_pointer'.
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*/
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typedef struct objc_object
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{
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/* 'class_pointer' is the Class that the object belongs to. In case
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of a Class object, this pointer points to the meta class.
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Compatibility Note: The Apple/NeXT runtime calls this field
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'isa'. */
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Class class_pointer;
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} *id;
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/*
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'IMP' is a C function that implements a method. When retrieving the
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implementation of a method from the runtime, this is the type of the
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pointer returned. The idea of the definition of IMP is to represent
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a 'pointer to a general function taking an id, a SEL, followed by
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other unspecified arguments'. You must always cast an IMP to a
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pointer to a function taking the appropriate, specific types for
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that function, before calling it - to make sure the appropriate
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arguments are passed to it. The code generated by the compiler to
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perform method calls automatically does this cast inside method
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calls.
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*/
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typedef id (*IMP)(id, SEL, ...);
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/* 'nil' is the null object. Messages to nil do nothing and always
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return 0. */
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#define nil (id)0
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/* 'Nil' is the null class. Since classes are objects too, this is
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actually the same object as 'nil' (and behaves in the same way),
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but it has a type of Class, so it is good to use it instead of
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'nil' if you are comparing a Class object to nil as it enables the
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compiler to do some type-checking. */
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#define Nil (Class)0
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#include "deprecated/STR.h"
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/* TODO: Move the 'Protocol' declaration into objc/runtime.h. A
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Protocol is simply an object, not a basic Objective-C type. The
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Apple runtime defines Protocol in objc/runtime.h too, so it's good
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to move it there for API compatibility.
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*/
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/* A 'Protocol' is a formally defined list of selectors (normally
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created using the @protocol Objective-C syntax). It is mostly used
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at compile-time to check that classes implement all the methods
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that they are supposed to. Protocols are also available in the
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runtime system as Protocol objects.
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*/
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#ifndef __OBJC__
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/* Once we stop including the deprecated struct_objc_protocol.h
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there is no reason to even define a 'struct objc_protocol'. As
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all the structure details will be hidden, a Protocol basically is
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simply an object (as it should be).
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*/
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/* typedef struct objc_object Protocol; */
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#include "deprecated/struct_objc_protocol.h"
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#else /* __OBJC__ */
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@class Protocol;
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#endif
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/* Deprecated include - here temporarily, for backwards-compatibility
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as reval_t, apply_t, arglist_t and objc_msg_lookup() used to be
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defined here. */
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#include "message.h"
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/* Compatibility note: the Apple/NeXT runtime defines sel_getName(),
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sel_registerName(), object_getClassName(), object_getIndexedIvars()
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in this file while the GNU runtime defines them in runtime.h.
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The reason the GNU runtime does not define them here is that they
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are not basic Objective-C types (defined in this file), but are
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part of the runtime API (defined in runtime.h).
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* not __objc_INCLUDE_GNU */
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