src/app/zap-templates/partials/cluster-objects-struct.zapt

{{#if header}}
namespace {{asUpperCamelCase name}} {
    enum class Fields : uint8_t {
    {{#zcl_struct_items}}
    k{{asUpperCamelCase label}} = {{fieldIdentifier}},
    {{/zcl_struct_items}}
    };

    struct Type {
    public:
        {{#zcl_struct_items}}
        {{zapTypeToEncodableClusterObjectType type}} {{asLowerCamelCase label}}{{> cluster_objects_field_init}};
        {{/zcl_struct_items}}

        {{#unless struct_contains_array}}
        CHIP_ERROR Decode(TLV::TLVReader &reader);
        {{/unless}}

        static constexpr bool kIsFabricScoped = {{isFabricScoped}};

        {{#if isFabricScoped}}
        auto GetFabricIndex() const {
            return fabricIndex;
        }

        void SetFabricIndex(chip::FabricIndex fabricIndex_) {
            fabricIndex = fabricIndex_;
        }

        CHIP_ERROR EncodeForWrite(TLV::TLVWriter &writer, TLV::Tag tag) const;
        CHIP_ERROR EncodeForRead(TLV::TLVWriter &writer, TLV::Tag tag, FabricIndex accessingFabricIndex) const;

    private:
        CHIP_ERROR DoEncode(TLV::TLVWriter &writer, TLV::Tag tag, const Optional<FabricIndex> &accessingFabricIndex) const;
        {{else}}
        CHIP_ERROR Encode(TLV::TLVWriter &writer, TLV::Tag tag) const;
        {{/if}}
    };

    {{#if struct_contains_array}}
    struct DecodableType {
    public:
        {{#zcl_struct_items}}
        {{zapTypeToDecodableClusterObjectType type}} {{asLowerCamelCase label}}{{> cluster_objects_field_init}};
        {{/zcl_struct_items}}

        CHIP_ERROR Decode(TLV::TLVReader &reader);

        static constexpr bool kIsFabricScoped = {{isFabricScoped}};

        {{#if isFabricScoped}}
        auto GetFabricIndex() const {
            return fabricIndex;
        }

        void SetFabricIndex(chip::FabricIndex fabricIndex_) {
            fabricIndex = fabricIndex_;
        }
        {{/if}}
    };
    {{else}}
    using DecodableType = Type;
    {{/if}}

} // namespace {{asUpperCamelCase name}}
{{else}}
namespace {{asUpperCamelCase name}} {
{{#if isFabricScoped}}
CHIP_ERROR Type::EncodeForWrite(TLV::TLVWriter &writer, TLV::Tag tag) const
{
    return DoEncode(writer, tag, NullOptional);
}

CHIP_ERROR Type::EncodeForRead(TLV::TLVWriter &writer, TLV::Tag tag, FabricIndex accessingFabricIndex) const
{
    return DoEncode(writer, tag, MakeOptional(accessingFabricIndex));
}

CHIP_ERROR Type::DoEncode(TLV::TLVWriter &writer, TLV::Tag tag, const Optional<FabricIndex> & accessingFabricIndex) const
{
    {{#if struct_has_fabric_sensitive_fields}}
    bool includeSensitive = !accessingFabricIndex.HasValue() || (accessingFabricIndex.Value() == fabricIndex);
    {{/if}}
    TLV::TLVType outer;
    ReturnErrorOnFailure(writer.StartContainer(tag, TLV::kTLVType_Structure, outer));
    {{#zcl_struct_items}}
    {{#if (is_num_equal fieldIdentifier 254)}}
    if (accessingFabricIndex.HasValue()) {
      ReturnErrorOnFailure(DataModel::Encode(writer, TLV::ContextTag(Fields::k{{asUpperCamelCase label}}), {{asLowerCamelCase label}}));
    }
    {{else if isFabricSensitive}}
    if (includeSensitive) {
       ReturnErrorOnFailure(DataModel::Encode(writer, TLV::ContextTag(Fields::k{{asUpperCamelCase label}}), {{asLowerCamelCase label}}));
    }
    {{else}}
    ReturnErrorOnFailure(DataModel::Encode(writer, TLV::ContextTag(Fields::k{{asUpperCamelCase label}}), {{asLowerCamelCase label}}));
    {{/if}}
    {{/zcl_struct_items}}
    ReturnErrorOnFailure(writer.EndContainer(outer));
    return CHIP_NO_ERROR;
}
{{else}}
CHIP_ERROR Type::Encode(TLV::TLVWriter &writer, TLV::Tag tag) const
{
    TLV::TLVType outer;
    ReturnErrorOnFailure(writer.StartContainer(tag, TLV::kTLVType_Structure, outer));
    {{#zcl_struct_items}}
    ReturnErrorOnFailure(DataModel::Encode(writer, TLV::ContextTag(Fields::k{{asUpperCamelCase label}}), {{asLowerCamelCase label}}));
    {{/zcl_struct_items}}
    ReturnErrorOnFailure(writer.EndContainer(outer));
    return CHIP_NO_ERROR;
}
{{/if}}

CHIP_ERROR DecodableType::Decode(TLV::TLVReader &reader) {
    CHIP_ERROR err = CHIP_NO_ERROR;
    TLV::TLVType outer;
    VerifyOrReturnError(TLV::kTLVType_Structure == reader.GetType(), CHIP_ERROR_WRONG_TLV_TYPE);
    err = reader.EnterContainer(outer);
    ReturnErrorOnFailure(err);
    while ((err = reader.Next()) == CHIP_NO_ERROR) {
        if (!TLV::IsContextTag(reader.GetTag()))
        {
            continue;
        }
        switch (TLV::TagNumFromTag(reader.GetTag()))
        {
            {{#zcl_struct_items}}
            case to_underlying(Fields::k{{asUpperCamelCase label}}):
                ReturnErrorOnFailure(DataModel::Decode(reader, {{asLowerCamelCase label}}));
                break;
            {{/zcl_struct_items}}
            default:
                break;
        }
    }

    VerifyOrReturnError(err == CHIP_END_OF_TLV, err);
    ReturnErrorOnFailure(reader.ExitContainer(outer));

    return CHIP_NO_ERROR;
}

} // namespace {{asUpperCamelCase name}}
{{/if}}