func isProtoable()

in cmd/go-to-protobuf/protobuf/generator.go [99:134]

35 lines of code
14 McCabe index (conditional complexity)


func isProtoable(seen map[*types.Type]bool, t *types.Type) bool {
	if seen[t] {
		// be optimistic in the case of type cycles.
		return true
	}
	seen[t] = true
	switch t.Kind {
	case types.Builtin:
		return true
	case types.Alias:
		return isProtoable(seen, t.Underlying)
	case types.Slice, types.Pointer:
		return isProtoable(seen, t.Elem)
	case types.Map:
		return isProtoable(seen, t.Key) && isProtoable(seen, t.Elem)
	case types.Struct:
		if len(t.Members) == 0 {
			return true
		}
		for _, m := range t.Members {
			if isProtoable(seen, m.Type) {
				return true
			}
		}
		return false
	case types.Func, types.Chan:
		return false
	case types.DeclarationOf, types.Unknown, types.Unsupported:
		return false
	case types.Interface:
		return false
	default:
		log.Printf("WARNING: type %q is not portable: %s", t.Kind, t.Name)
		return false
	}
}