// If this PointsToSet came from a Pointer of interface kind
// or a reflect.Value, DynamicTypes returns the set of dynamic
// types that it may contain. (For an interface, they will
// always be concrete types.)
//
// The result is a mapping whose keys are the dynamic types to which
// it may point. For each pointer-like key type, the corresponding
// map value is the PointsToSet for pointers of that type.
//
// The result is empty unless CanHaveDynamicTypes(T).
//
func (s PointsToSet) DynamicTypes() *typeutil.Map {
var tmap typeutil.Map
tmap.SetHasher(s.a.hasher)
if s.pts != nil {
var space [50]int
for _, x := range s.pts.AppendTo(space[:0]) {
ifaceObjId := nodeid(x)
if !s.a.isTaggedObject(ifaceObjId) {
continue // !CanHaveDynamicTypes(tDyn)
}
tDyn, v, indirect := s.a.taggedValue(ifaceObjId)
if indirect {
panic("indirect tagged object") // implement later
}
pts, ok := tmap.At(tDyn).(PointsToSet)
if !ok {
pts = PointsToSet{s.a, new(nodeset)}
tmap.Set(tDyn, pts)
}
pts.pts.addAll(&s.a.nodes[v].solve.pts)
}
}
return &tmap
}
