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{%- set mojom_type = union|get_qualified_name_for_kind %}
template <>
struct {{export_attribute}} UnionTraits<{{mojom_type}}::DataView,
{{mojom_type}}Ptr> {
static bool IsNull(const {{mojom_type}}Ptr& input) { return !input; }
static void SetToNull({{mojom_type}}Ptr* output) { output->reset(); }
static {{mojom_type}}::Tag GetTag(const {{mojom_type}}Ptr& input) {
return input->which();
}
{%- for field in union.fields %}
{%- set maybe_const_in = "" if field.kind|contains_handles_or_interfaces else "const" %}
{%- set maybe_const_out = "" if field.kind|contains_handles_or_interfaces or not field.kind|is_reference_kind else "const" %}
{# We want the field accessor to be const whenever possible to allow
structs to be used as map keys. #}
static {{maybe_const_out}} {{field.kind|cpp_union_trait_getter_return_type}} {{field.name}}({{maybe_const_in}} {{mojom_type}}Ptr& input) {
return input->get_{{field.name}}();
}
{%- endfor %}
static bool Read({{mojom_type}}::DataView input, {{mojom_type}}Ptr* output);
};
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