DBNode.h

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#ifndef DBNODE_H
#define DBNODE_H
 
#include <iostream>
#include <map>
#include <vector>
#include <string>
#include <memory>
#include <fstream>
#include <sstream>
#include <variant>
#include <initializer_list>
#include <stdexcept>
#include <algorithm>
 
#include "BlockName.h"
 
class DBNode {
public:
    using Value = std::variant<BlockName, int, double, bool, std::shared_ptr<DBNode>, std::vector<std::shared_ptr<DBNode>>>;
 
 
    DBNode();
 
    template <typename... Keys>
    Value get(Keys&&... keys) const;
 
    std::vector<BlockName> get_keys();
 
    template <typename T, typename Key, typename... Rest>
    void set(T value, Key&& key, Rest&&... rest);
 
    std::map<BlockName, Value> getGroup(const std::vector<BlockName>& keys) const;
 
    void setGroup(const std::vector<BlockName>& keys, const std::map<BlockName, Value>& groupData);
 
    void printJSON(int level = 0) const;
 
    void printJSONToStream(std::ostream& os, int level = 0) const;
 
    void printYAMLToStream(std::ostream& os, int level = 0) const;
 
    void printYAML(int level = 0) const;
 
    bool contains(const BlockName& key) const;
 
    int countChildren() const;
 
    bool isList() const;
private:
    std::map<BlockName, Value> data_;
 
    // Recursive lookup helpers used by get(...).
 
    template <typename Map, typename Key>
    Value getRecursive(const Map& map, Key&& key) const;
 
    template <typename Map, typename Key, typename Next, typename... Rest>
 
    Value getRecursive(const Map& map, Key&& key, Next&& next, Rest&&... rest) const;
 
    void printValue(const Value& value, int level) const;
 
    void printValueToStream(std::ostream& os, const Value& value, int level) const;
 
    // YAML helper: prints a scalar Value to an arbitrary stream.
    void printScalarYAMLToStream(std::ostream& os, const Value& value) const;
 
    void printScalarYAML(const Value& value) const;
 
    bool isListDBNode(const std::shared_ptr<DBNode>& node) const;
};
 
#include "DBNode.tpp"
 
#endif