| fs = mkfs(class0, ty, fieldvar), is_obj(r, class, st), okval(val, ty) ⊦ fs ' = _type, is_obj(r, class, st[r -- fs ', val]) |
is_obj(r, class, st), okval(val, ty) ⊦ mkfs(class0, ty, fieldvar) ' = _type, is_obj(r, class, st[r -- mkfs(class0, ty, fieldvar) ', val])
[[CONCRETESIMPRULES : ()]]