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* objects.c, objects.h (scm_entity_p): New procedure. Together

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with the predicates scm_procedure_p and scm_struct_p, this
predicate makes it possible to differ between structs, entities
and operators.
This commit is contained in:
Mikael Djurfeldt 1998-11-26 18:03:02 +00:00
parent 90184345a0
commit 19c0dec231
1 changed files with 11 additions and 1 deletions
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12
libguile/objects.c
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@ -56,6 +56,16 @@
SCM scm_metaclass_standard; SCM scm_metaclass_standard;
SCM scm_metaclass_operator; SCM scm_metaclass_operator;
SCM_PROC (s_entity_p, "entity?", 1, 0, 0, scm_entity_p);
SCM
scm_entity_p (SCM obj)
{
return (SCM_NIMP (obj) && SCM_STRUCTP (obj) && SCM_I_ENTITYP (obj)
? SCM_BOOL_T
: SCM_BOOL_F);
}
SCM_PROC (s_set_object_procedure_x, "set-object-procedure!", 1, 0, 1, scm_set_object_procedure_x); SCM_PROC (s_set_object_procedure_x, "set-object-procedure!", 1, 0, 1, scm_set_object_procedure_x);
SCM SCM
@ -219,7 +229,7 @@ scm_init_objects ()
SCM et = scm_make_struct (mt, SCM_INUM0, SCM et = scm_make_struct (mt, SCM_INUM0,
SCM_LIST4 (el, SCM_BOOL_F, SCM_EOL, SCM_EOL)); SCM_LIST4 (el, SCM_BOOL_F, SCM_EOL, SCM_EOL));
scm_sysintern ("<standard-class>", mt); scm_sysintern ("<class>", mt);
scm_metaclass_standard = mt; scm_metaclass_standard = mt;
scm_sysintern ("<operator-class>", ot); scm_sysintern ("<operator-class>", ot);
scm_metaclass_operator = ot; scm_metaclass_operator = ot;