tools/fidl/fidlgen_llcpp/codegen/fragment_struct.tmpl

{{/*
// Copyright 2018 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.
*/}}

{{- define "Struct:ForwardDeclaration:TypesHeader" }}
{{ EnsureNamespace . }}
struct {{ .Name }};
{{- end }}

{{/* TODO(fxbug.dev/36441): Remove __Fuchsia__ ifdefs once we have non-Fuchsia
     emulated handles for C++. */}}
{{- define "Struct:TypesHeader" }}
{{ EnsureNamespace . }}
{{ if .IsResourceType }}
{{- IfdefFuchsia -}}
{{- end }}
extern "C" const fidl_type_t {{ .CodingTableType }};
{{ .Docs }}
struct {{ .Name }} {
  static constexpr const fidl_type_t* Type = &{{ .CodingTableType }};
  static constexpr uint32_t MaxNumHandles = {{ .TypeShapeV2.MaxHandles }};
  static constexpr uint32_t PrimarySize = {{ .TypeShapeV2.InlineSize }};
  static constexpr uint32_t PrimarySizeV1 = {{ .TypeShapeV1.InlineSize }};
  [[maybe_unused]]
  static constexpr uint32_t MaxOutOfLine = {{ .TypeShapeV2.MaxOutOfLine }};
  static constexpr uint32_t MaxOutOfLineV1 = {{ .TypeShapeV1.MaxOutOfLine }};
  static constexpr bool HasPointer = {{ .TypeShapeV2.HasPointer }};

{{- range .AnonymousChildren }}
  using {{ .ScopedName }} = {{ .FlattenedName }};
{{- end }}

  {{- range .Members }}
{{ "" }}
    {{- .Docs }}
    {{ .Type }} {{ .Name }} = {};
  {{- end }}

  {{- if .IsResourceType }}

  void _CloseHandles();
  {{- end }}

  class UnownedEncodedMessage;
  class OwnedEncodedMessage;
  class DecodedMessage;
};

{{- if .IsResourceType }}
{{- EndifFuchsia -}}
{{- end }}
{{- end }}

{{/* TODO(fxbug.dev/36441): Remove __Fuchsia__ ifdefs once we have non-Fuchsia
     emulated handles for C++. */}}
{{- define "Struct:TypesSource" }}
{{ EnsureNamespace "" }}
{{ if .IsResourceType }}
{{- IfdefFuchsia -}}
void {{ . }}::_CloseHandles() {
  {{- range .Members }}
    {{- CloseHandles . false false }}
  {{- end }}
}
{{- EndifFuchsia -}}
{{- end }}
{{- end }}

{{/* TODO(fxbug.dev/36441): Remove __Fuchsia__ ifdefs once we have non-Fuchsia
     emulated handles for C++. */}}
{{- define "Struct:Traits:TypesHeader" }}
{{ if .IsResourceType }}
{{- IfdefFuchsia -}}
template <>
struct IsResource<{{ . }}> : public std::true_type {};
{{- end }}
template <>
struct IsFidlType<{{ . }}> : public std::true_type {};
template <>
struct IsStruct<{{ . }}> : public std::true_type {};
static_assert(std::is_standard_layout_v<{{ . }}>);
{{- $struct := . }}
{{- range .Members }}
static_assert(offsetof({{ $struct }}, {{ .Name }}) == {{ .OffsetV2 }});
{{- end }}
static_assert(sizeof({{ . }}) == {{ . }}::PrimarySize);
{{- if .IsResourceType }}
{{- EndifFuchsia -}}
{{- end }}
{{- end }}