Program Listing for File dictionary.h

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and your use of them is governed by the express license under which they
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#pragma once

#include <cstdint>
#include <map>
#include <string>
#include <variant>

namespace gpa {
namespace serialization {
namespace metadata {

class DictionaryVisitor
{
public:
    virtual void OnStringEntry(char const* key, char const* value) = 0;
    virtual void OnIntegerEntry(char const* key, int64_t value) = 0;
    virtual void OnBoolEntry(char const* key, bool value) = 0;
};

class Dictionary
{
public:
    bool operator==(Dictionary const& other) const;
    bool operator!=(Dictionary const& other) const;

    void Set(char const* name, char const* value);
    void Set(char const* name, std::string const& value);
    void Set(char const* name, int64_t value);
    void Set(char const* name, bool value);

    void VisitAll(DictionaryVisitor* visitor) const;

private:
    typedef std::string KeyType;
    typedef std::variant<int64_t, std::string, bool> ValueType;

    std::map<KeyType, ValueType> mPairs;
};

}  // namespace metadata
}  // namespace serialization
}  // namespace gpa