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#pragma once
#include <iosfwd>
#include <memory>
class BaseValue {
public:
enum Kind {
KD_Numeric,
KD_Text,
KD_DateTime,
/// An unspecified type, otherwise known as "any" in some contexts.
InvalidKind,
KindCount = InvalidKind,
};
private:
Kind mKind;
public:
static const char* FormatKind(Kind kind);
static std::unique_ptr<BaseValue> CreateByKind(Kind kind);
BaseValue(Kind kind);
virtual ~BaseValue() = default;
BaseValue(const BaseValue&) = delete;
BaseValue& operator=(const BaseValue&) = delete;
BaseValue(BaseValue&&) = default;
BaseValue& operator=(BaseValue&&) = default;
Kind GetKind() const;
// TODO get constant editor
/// The functions \c ReadFrom, \c WriteTo will only be valid to call if this function returns true.
virtual bool SupportsConstant() const;
virtual void ReadFrom(std::istream& stream);
virtual void WriteTo(std::ostream& stream);
};
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