func implements(t types.Type, interfac *types.Interface, pkg *types.Package) bool {
if interfac == nil || t == nil || interfac.Empty() {
return false
}
if types.Implements(t, interfac) {
return true
}
//For some reason, interfaces that comes
//already built in (not from sources) are
//not working with types.Implements method
for i := 0; i < interfac.NumMethods(); i++ {
m := interfac.Method(i)
obj, _, _ := types.LookupFieldOrMethod(t, true, pkg, m.Name())
if obj == nil {
util.Debug("method %s not found in type %v", m.Name(), t)
return false
}
}
return true
}
