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Update: Added comments about the API

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This commit is contained in:
Philipp Schafft 2018-10-11 09:17:40 +00:00
parent a242f0f77b
commit d8c887aa37
1 changed files with 36 additions and 0 deletions
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36
src/refobject.h
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@ -37,6 +37,15 @@
* as the operation is only defined for it's members.
* REFOBJECT_TO_TYPE(type,x)
* This casts the refobject (x) to the type (type).
* REFOBJECT_FROM_TYPE(x)
* Converts an object to a (refobject_t). This is the inverse of REFOBJECT_TO_TYPE().
* REFOBJECT_GET_TYPENAME(x)
* Get the name of the type of the object.
* REFOBJECT_IS_VALID(x,type)
* This returns true if x is not NULL and of type type.
* REFOBJECT_GET_BASE(x)
* REFOBJECT_GET_TYPE(x)
* Not to be used by the user.
*/
#ifdef HAVE_TYPE_ATTRIBUTE_TRANSPARENT_UNION
#define REFOBJECT_NULL ((refobject_t)(refobject_base_t*)NULL)
@ -57,6 +66,33 @@
#define REFOBJECT_IS_VALID(x,type) (!REFOBJECT_IS_NULL((x)) && REFOBJECT_GET_TYPE((x)) == (refobject_type__ ## type))
/* The following macros are used to define types.
*
* REFOBJECT_FORWARD_TYPE(type)
* Adds a forward decleration for the type. This is useful for non private types.
* REFOBJECT_DEFINE_TYPE(type,extras...)
* This defines a public type. One or more of the EXTRA macros be used.
* REFOBJECT_DEFINE_PRIVATE_TYPE(type,extras...)
* Same as REFOBJECT_DEFINE_TYPE() but defines private type.
*
* EXTRA Marcos:
* REFOBJECT_DEFINE_TYPE_FREE(cb)
* This defines a callback to be called when the object is freed.
* cb must be of type refobject_free_t.
* REFOBJECT_DEFINE_TYPE_NEW(cb)
* This defines a callback to be called when a new object is created.
* cb must be of type refobject_new_t.
* REFOBJECT_DEFINE_TYPE_NEW_NOOP()
* This installs a dummy callback for creation. This allows the type
* to be created using refobject_new(type) as with REFOBJECT_DEFINE_TYPE_NEW().
* This is useful for types that do not need to be initialized more than what
* refobject_new() already does.
*
* Other Macros:
* REFOBJECT_CONTROL_VERSION
* REFOBJECT_DEFINE_TYPE__RAW()
* Not to be used by the user.
*/
#define REFOBJECT_CONTROL_VERSION 1
#define REFOBJECT_FORWARD_TYPE(type) extern const refobject_type_t * refobject_type__ ## type;
#define REFOBJECT_DEFINE_TYPE__RAW(type, ...) \