| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package types |
| |
| // TODO(fxb/39159): Remove post migration. |
| |
| // ConvertUnionToXUnion converts a union to a xunion. This should only be used |
| // once we're already moved to the v1 format. |
| func ConvertUnionToXUnion(union Union) XUnion { |
| var members []XUnionMember |
| for _, member := range union.Members { |
| if member.Reserved { |
| continue |
| } |
| members = append(members, XUnionMember{ |
| Attributes: member.Attributes, |
| Ordinal: member.XUnionOrdinal, |
| ExplicitOrdinal: member.XUnionOrdinal, |
| // This field doesn't apply to unions that were xunions since they |
| // already use explicit ordinals on the wire. Since backends only use |
| // this field to generate code that reads xunions, passing in the |
| // explicit ordinal here is OK. |
| HashedOrdinal: member.XUnionOrdinal, |
| Type: member.Type, |
| Name: member.Name, |
| Offset: -1, // unused |
| MaxOutOfLine: -1, // unused |
| }) |
| } |
| typeShape := TypeShape{ |
| InlineSize: 24, |
| Alignment: 8, |
| Depth: union.TypeShapeV1.Depth, |
| MaxHandles: union.TypeShapeV1.MaxHandles, |
| MaxOutOfLine: union.TypeShapeV1.MaxOutOfLine, |
| HasPadding: union.TypeShapeV1.HasPadding, |
| HasFlexibleEnvelope: union.TypeShapeV1.HasFlexibleEnvelope, |
| ContainsUnion: union.TypeShapeV1.ContainsUnion, |
| } |
| return XUnion{ |
| Attributes: union.Attributes, |
| Name: union.Name, |
| Members: members, |
| TypeShapeV1: typeShape, |
| Strictness: true, |
| } |
| } |
