123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
#ifndef SCHEMA_HPP
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#define SCHEMA_HPP
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#include "matador/object/error_code.hpp"
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#include "matador/object/schema_node.hpp"
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#include "matador/object/schema_node_iterator.hpp"
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#include "matador/utils/result.hpp"
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#include "matador/utils/error.hpp"
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#include <memory>
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#include <string>
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#include <unordered_map>
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namespace matador::object {
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class schema {
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public:
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typedef const_schema_node_iterator const_iterator; /**< Shortcut for the list const iterator. */
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/**
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* Creates an empty schema
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*/
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explicit schema( const std::string& name = "");
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template <typename Type>
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[[nodiscard]] utils::result<void, utils::error> attach(const std::string name, const std::string &parent = "") {
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auto node = schema_node::make_node<Type>(*this, name);
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auto result = attach_node(node, parent);
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if (!result) {
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return utils::failure(result.err());
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}
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return utils::ok<void>();
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}
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template <typename Type, typename ParentType>
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[[nodiscard]] utils::result<void, utils::error> attach(const std::string name) {
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auto node = schema_node::make_node<Type>(*this, name);
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auto result = attach_node(node, std::type_index(typeid(ParentType)));
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if (!result) {
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return utils::failure(result.err());
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}
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return utils::ok<void>();
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}
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/**
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* Return the first schema node.
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*
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* @return The first schema node iterator.
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*/
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[[nodiscard]] const_iterator begin() const;
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/**
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* Return the last schema node.
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*
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* @return The last schema node iterator.
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*/
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[[nodiscard]] const_iterator end() const;
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/**
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* Returns true if the schema contains
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* no schema nodes.
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*
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* @return True if schema is empty
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*/
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[[nodiscard]] bool empty() const;
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/**
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* Returns the current number of schema node.
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*
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* @return Number of schema nodes
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*/
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[[nodiscard]] size_t size() const;
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/**
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* Returns the name of the schema.
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*
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* @return The name of the schema
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*/
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[[nodiscard]] std::string name() const;
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template <typename Type>
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[[nodiscard]] utils::result<object_info_ref<Type>, utils::error> info() const {
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auto result = find_node(std::type_index(typeid(Type)));
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if (!result) {
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return utils::failure(result.err());
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}
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return utils::ok(result.value()->info<Type>());
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}
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private:
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using node_ptr = std::shared_ptr<schema_node>;
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using t_node_map = std::unordered_map<std::string, node_ptr>;
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using t_type_index_node_map = std::unordered_map<std::type_index, node_ptr>;
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[[nodiscard]] utils::result<std::shared_ptr<schema_node>, utils::error> attach_node(const std::shared_ptr<schema_node> &node,
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const std::string &parent);
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[[nodiscard]] utils::result<std::shared_ptr<schema_node>, utils::error> attach_node(const std::shared_ptr<schema_node> &node,
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const std::type_index &type_index);
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[[nodiscard]] utils::result<std::shared_ptr<schema_node>, utils::error> find_node(const std::string &name) const;
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[[nodiscard]] utils::result<std::shared_ptr<schema_node>, utils::error> find_node(const std::type_index &type_index) const;
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[[nodiscard]] bool has_node(const std::type_index& index, const std::string &name) const;
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static void push_back_child(const node_ptr &parent, const node_ptr &child);
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private:
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std::string name_;
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std::shared_ptr<schema_node> root_;
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t_node_map node_map_;
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t_type_index_node_map type_index_node_map_;
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};
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}
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#endif //SCHEMA_HPP
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