Function isUnionMessage

grpc/codegen/protobuf_transform.go:1122–1137

isUnionMessage returns true if the given attribute is a union message.

(at *expr.AttributeExpr)

// isUnionMessage returns true if the given attribute is a union message.
func isUnionMessage(at *expr.AttributeExpr) bool {
	ut, ok := at.Type.(expr.UserType)
	if !ok {
		return false
	}
	obj := expr.AsObject(ut.Attribute().Type)
	if obj == nil {
		return false
	}
	for _, nat := range *obj {
		if expr.IsUnion(nat.Attribute.Type) {
			return true
		}
	}
	return false
}

// dupTransformAttrs returns a shallow copy of the given transformAttrs.
func dupTransformAttrs(ta *transformAttrs) *transformAttrs {