Class apply_individual_instance_visitor

src/ifcparse/IfcParse.cpp:1028–1086

};

class apply_individual_instance_visitor {
  private:
    boost::optional<AttributeValue> attribute_;
    int attribute_index_;

    const IfcUtil::IfcBaseClass* inst_;


    template <typename T>
    void apply_attribute_(T& t, const AttributeValue& attr, int index) const {
        switch (attr.type()) {
        case IfcUtil::Argument_ENTITY_INSTANCE: {
            IfcUtil::IfcBaseClass* inst = attr;
            t(inst, index);
            break;
        }
        case IfcUtil::Argument_AGGREGATE_OF_ENTITY_INSTANCE: {
            aggregate_of_instance::ptr entity_list_attribute = attr;
            for (aggregate_of_instance::it it = entity_list_attribute->begin(); it != entity_list_attribute->end(); ++it) {
                t(*it, index);
            }
            break;
        }
        case IfcUtil::Argument_AGGREGATE_OF_AGGREGATE_OF_ENTITY_INSTANCE: {
            aggregate_of_aggregate_of_instance::ptr entity_list_attribute = attr;
            for (aggregate_of_aggregate_of_instance::outer_it it = entity_list_attribute->begin(); it != entity_list_attribute->end(); ++it) {
                for (aggregate_of_aggregate_of_instance::inner_it jt = it->begin(); jt != it->end(); ++jt) {
                    t(*jt, index);
                }
            }
            break;
        }
        default:
            break;
        }
    }
  public:
    apply_individual_instance_visitor(const AttributeValue& attribute, int idx)
        : attribute_(attribute)
        , attribute_index_(idx)
    {}

    apply_individual_instance_visitor(const IfcUtil::IfcBaseClass* data)
        : inst_(data)
    {}

    template <typename T>
    void apply(T& t) const {
        if (attribute_) {
            apply_attribute_(t, *attribute_, attribute_index_);
        } else {
            const auto& decl = inst_->declaration();
            for (size_t i = 0; i < (decl.as_entity() ? decl.as_entity()->attribute_count() : 1); ++i) {
                auto attr = inst_->get_attribute_value(i);
                apply_attribute_(t, attr, (int) i);
            }
        }
    };