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* objects.c (scm_set_object_procedure_x): Disallow setting of

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procedures for pure generic functions.
This commit is contained in:
Mikael Djurfeldt 1999-08-16 15:18:54 +00:00
parent 75efe4535b
commit c1a6fd8f8a
1 changed files with 5 additions and 30 deletions
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35
libguile/objects.c
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@ -238,18 +238,18 @@ SCM
scm_set_object_procedure_x (SCM obj, SCM procs)
{
SCM proc[4], *pp, p, setp, arity;
int i, a, r, c = 0;
int i, a, r;
SCM_ASSERT (SCM_NIMP (obj) && SCM_STRUCTP (obj)
&& (SCM_I_ENTITYP (obj)
|| (SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR)),
&& ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR)
|| (SCM_I_ENTITYP (obj)
&& !(SCM_OBJ_CLASS_FLAGS (obj)
& SCM_CLASSF_PURE_GENERIC))),
obj,
SCM_ARG1,
s_set_object_procedure_x);
for (i = 0; i < 4; ++i)
proc[i] = SCM_BOOL_F;
i = 0;
if (SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC)
c = 1;
while (SCM_NIMP (procs))
{
if (i == 4)
@ -257,23 +257,6 @@ scm_set_object_procedure_x (SCM obj, SCM procs)
p = SCM_CAR (procs);
setp = 0;
SCM_ASSERT (SCM_NIMP (p), p, SCM_ARG2 + i, s_set_object_procedure_x);
if (c != 0)
{
if ((SCM_CAR (p) == scm_sym_atdispatch
|| SCM_CAR (p) == SCM_IM_DISPATCH)
&& c < 4)
{
proc[c++] = setp = p;
goto next;
}
else
SCM_ASSERT (SCM_TYP7 (p) == scm_tc7_subr_1
|| (SCM_CLOSUREP (p)
&& (SCM_INUM (SCM_CAR (scm_procedure_property
(p, scm_sym_arity)))
== 1)),
p, SCM_ARG2 + i, s_set_object_procedure_x);
}
if (SCM_CLOSUREP (p))
{
arity = scm_procedure_property (p, scm_sym_arity);
@ -334,22 +317,14 @@ scm_set_object_procedure_x (SCM obj, SCM procs)
proc[3] = setp = p;
}
SCM_ASSERT (setp, p, SCM_ARG2 + i, s_set_object_procedure_x);
next:
++i;
procs = SCM_CDR (procs);
}
/* Fill the rest of the method cache slots
if a cache has been supplied earlier. */
if (c != 0)
for (; c < 4; ++c)
proc[c] = proc[c - 1];
pp = (SCM_I_ENTITYP (obj)
? &SCM_ENTITY_PROC_0 (obj)
: &SCM_OPERATOR_CLASS (obj)->proc0);
for (i = 0; i < 4; ++i)
*pp++ = proc[i];
return SCM_UNSPECIFIED;
}