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| author | Kaz Kylheku <kaz@kylheku.com> | 2022-10-17 08:12:10 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2022-10-17 08:12:10 -0700 |
| commit | 8357dd0ce75b5cace504acfcef2c31ee83a35e9c (patch) | |
| tree | 4487382d7fd86c7132bccf80ba26b3fab8af8db3 /txr.1 | |
| parent | 74ea4ee2f89457adbe5cf6facadd8e8b389517ab (diff) | |
| download | txr-8357dd0ce75b5cace504acfcef2c31ee83a35e9c.tar.gz txr-8357dd0ce75b5cace504acfcef2c31ee83a35e9c.tar.bz2 txr-8357dd0ce75b5cace504acfcef2c31ee83a35e9c.zip | |
defstruct: new :inherit clause.
The :inherit clause allows custom struct clauses to
inject inherited bases.
* stdlib/struct.tl (defstruct): Recognize :inherit clause,
adding symbol arguments to extra list of supers that
get appended to the list coming from defstruct's
seconda rgument.
(define-struct-clause): Disallow :inherit clause name.
* tests/012/oop-dsc.tl: New tests.
* txr.1: Documented.
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -29602,6 +29602,30 @@ form, all the finalizers execute after all the .code :fini finalizers regardless of the order in which they appear. + +.meIP (:inherit << super *) +The +.code :inherit +clause specifies zero or more types to be inherited. Each +.meta super +argument must be a symbol which is the name of an existing struct type. +These symbols are appended to the list of supertypes coming from the +.meta super +argument +.codn defstruct . +Note: the motivation behind +.code :inherit +is to make it possible for struct clauses defined by +.code define-struct-clause +to inject supertypes. Developers are encouraged to use the regular +.meta super +argument of +.code defstruct +to declare inheritance of supertypes, rather than writing visible +.code :inherit +clauses that can be moved into the +.meta super +argument. .RE .IP The slot names given in a |