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move coerce() from bltinmodule.c to object.c and implement builtin_coerce() differently

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Guido van Rossum 1995-01-10 15:26:20 +00:00
parent 879c581826
commit 5524a59b09
2 changed files with 40 additions and 50 deletions
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33
Objects/object.c
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@ -319,6 +319,39 @@ testbool(v)
return res;
}
/* Coerce two numeric types to the "larger" one.
Increment the reference count on each argument.
Return -1 and raise an exception if no coercion is possible
(and then no reference count is incremented).
*/
int
coerce(pv, pw)
object **pv, **pw;
{
register object *v = *pv;
register object *w = *pw;
int res;
if (v->ob_type == w->ob_type && !is_instanceobject(v)) {
INCREF(v);
INCREF(w);
return 0;
}
if (v->ob_type->tp_as_number && v->ob_type->tp_as_number->nb_coerce) {
res = (*v->ob_type->tp_as_number->nb_coerce)(pv, pw);
if (res <= 0)
return res;
}
if (w->ob_type->tp_as_number && w->ob_type->tp_as_number->nb_coerce) {
res = (*w->ob_type->tp_as_number->nb_coerce)(pw, pv);
if (res <= 0)
return res;
}
err_setstr(TypeError, "number coercion failed");
return -1;
}
/*
NoObject is usable as a non-NULL undefined value, used by the macro None.