TSdlOptionalValue.h

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#pragma once
 
#include "SDL/Introspect/TSdlAbstractValue.h"
 
#include <Common/assertion.h>
 
#include <string_view>
#include <optional>
 
namespace ph
{
 
template<typename T, typename Owner>
class TSdlOptionalValue : public TSdlAbstractValue<T, Owner>
{
public:
    TSdlOptionalValue(
        std::string typeName, 
        std::string valueName, 
        std::optional<T> Owner::* valuePtr);
 
    TSdlOptionalValue(
        std::string typeName,
        std::string valueName,
        std::string typeSignature,
        std::optional<T> Owner::* valuePtr);
 
    std::string valueAsString(const T& value) const override = 0;
    SdlNativeData ownedNativeData(Owner& owner) const override = 0;
 
    void setValue(Owner& owner, T value) const override;
    T* getValue(Owner& owner) const override;
    const T* getConstValue(const Owner& owner) const override;
    void ownedValueToDefault(Owner& owner) const override;
 
    TSdlOptionalValue& description(std::string descriptionStr);
 
protected:
    void loadFromSdl(
        Owner&                 owner,
        const SdlInputClause&  clause,
        const SdlInputContext& ctx) const override = 0;
 
    void saveToSdl(
        const Owner&            owner,
        SdlOutputClause&        out_clause,
        const SdlOutputContext& ctx) const override = 0;
 
    std::optional<T>& valueRef(Owner& owner) const;
 
private:
    std::optional<T> Owner::* m_valuePtr;
};
 
}// end namespace ph
 
#include "SDL/Introspect/TSdlOptionalValue.ipp"