mojo/public/tools/bindings/generators/cpp_templates/struct_serialization_definition.tmpl

size_t GetSerializedSize_(const {{struct.name}}Ptr& input) {
  if (!input)
    return 0;
  size_t size = sizeof(internal::{{struct.name}}_Data);
{%- for pf in struct.packed.packed_fields if pf.field.kind|is_object_kind %}
  size += GetSerializedSize_(input->{{pf.field.name}});
{%- endfor %}
  return size;
}

void Serialize_({{struct.name}}Ptr input, mojo::internal::Buffer* buf,
                internal::{{struct.name}}_Data** output) {
  if (input) {
    internal::{{struct.name}}_Data* result =
        internal::{{struct.name}}_Data::New(buf);
{%- for pf in struct.packed.packed_fields %}
{%-   if pf.field.kind|is_object_kind %}
    Serialize_(mojo::internal::Forward(input->{{pf.field.name}}), buf, &result->{{pf.field.name}}.ptr);
{%-   elif pf.field.kind|is_handle_kind %}
    result->{{pf.field.name}} = input->{{pf.field.name}}.release();
{%-   else %}
    result->{{pf.field.name}} = input->{{pf.field.name}};
{%-   endif %}
{%- endfor %}
    *output = result;
  } else {
    *output = NULL;
  }
}

void Deserialize_(internal::{{struct.name}}_Data* input,
                  {{struct.name}}Ptr* output) {
  if (input) {
    {{struct.name}}Ptr result({{struct.name}}::New());
{%- for pf in struct.packed.packed_fields %}
{%-   if pf.field.kind|is_object_kind %}
    Deserialize_(input->{{pf.field.name}}.ptr, &result->{{pf.field.name}});
{%-   elif pf.field.kind|is_handle_kind %}
    result->{{pf.field.name}}.reset(mojo::internal::FetchAndReset(&input->{{pf.field.name}}));
{%-   elif pf.field.kind|is_enum_kind %}
    result->{{pf.field.name}} = static_cast<{{pf.field.kind|cpp_wrapper_type}}>(
      input->{{pf.field.name}});
{%-   else %}
    result->{{pf.field.name}} = input->{{pf.field.name}};
{%-   endif %}
{%- endfor %}
    *output = result.Pass();
  } else {
    output->reset();
  }
}