| // 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 codegen |
| |
| const unionTmpl = ` |
| {{- define "UnionDeclaration" }} |
| {{- range .DocComments}} |
| ///{{ . }} |
| {{- end}} |
| {{ .Derives }} |
| pub enum {{ .Name }} { |
| {{- range .Members }} |
| {{- range .DocComments }} |
| ///{{ . }} |
| {{- end }} |
| {{ .Name }}({{ .Type }}), |
| {{- end }} |
| {{- if .IsFlexible }} |
| #[deprecated = "Use ` + "`{{ .Name }}::unknown()` to construct and `{{ .Name }}Unknown!()`" + ` to exhaustively match."] |
| #[doc(hidden)] |
| __Unknown { |
| ordinal: u64, |
| {{- if .IsResourceType }} |
| data: fidl::UnknownData, |
| {{- else }} |
| bytes: Vec<u8>, |
| {{- end }} |
| }, |
| {{- end }} |
| } |
| |
| {{- if .IsFlexible }} |
| /// Pattern that matches an unknown {{ .Name }} member. |
| #[macro_export] |
| macro_rules! {{ .Name }}Unknown { |
| () => { _ }; |
| } |
| {{- end }} |
| fidl_xunion! { |
| name: {{ .Name }}, |
| members: [ |
| {{- range .Members }} |
| {{ .Name }} { |
| ty: {{ .Type }}, |
| ordinal: {{ .Ordinal }}, |
| {{- if .HasHandleMetadata }} |
| handle_metadata: { |
| handle_subtype: {{ .HandleSubtype }}, |
| handle_rights: {{ .HandleRights }}, |
| }, |
| {{- end }} |
| }, |
| {{- end }} |
| ], |
| {{- if .IsStrict }} |
| strict_{{ if .IsResourceType }}resource{{ else }}value{{ end }}: true, |
| {{- else }} |
| {{ if .IsResourceType }}resource{{ else }}value{{ end }}_unknown_member: __Unknown, |
| {{- end }} |
| } |
| {{- end }} |
| ` |
