TSdlBool.h

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#pragma once
 
#include "SDL/Introspect/TSdlValue.h"
#include "SDL/Introspect/TSdlOptionalValue.h"
#include "SDL/sdl_helpers.h"
 
#include <Common/config.h>
#include <Common/logging.h>
 
#include <type_traits>
#include <string>
#include <utility>
 
namespace ph
{
 
template<typename Owner, typename SdlValueType = TSdlValue<bool, Owner>>
class TSdlBool : public SdlValueType
{
    static_assert(std::is_base_of_v<TSdlAbstractValue<bool, Owner>, SdlValueType>,
        "SdlValueType should be a subclass of TSdlAbstractValue.");
 
public:
    template<typename ValueType>
    inline TSdlBool(std::string valueName, ValueType Owner::* const valuePtr) :
        SdlValueType("bool", std::move(valueName), valuePtr)
    {}
 
    inline std::string valueAsString(const bool& value) const override
    {
        return value ? "true" : "false";
    }
 
    inline SdlNativeData ownedNativeData(Owner& owner) const override
    {
        bool* const boolPtr = this->getValue(owner);
        if constexpr(std::is_base_of_v<TSdlOptionalValue<bool, Owner>, SdlValueType>)
        {
            auto data = SdlNativeData(
                [&optBool = this->valueRef(owner)](std::size_t /* elementIdx */) -> SdlGetterVariant
                {
                    return optBool
                        ? SdlNativeData::permissiveElementGetter(&(*optBool))
                        : std::monostate{};
                },
                [&optBool = this->valueRef(owner)](std::size_t /* elementIdx */, SdlSetterVariant input) -> bool
                {
                    if(input.isEmpty())
                    {
                        optBool = std::nullopt;
                        return true;
                    }
                    else
                    {
                        optBool = bool{};
                        return SdlNativeData::permissiveElementSetter(input, &(*optBool));
                    }
                },
                AnyNonConstPtr(boolPtr));
 
            data.numElements = boolPtr ? 1 : 0;
            data.elementContainer = ESdlDataFormat::Single;
            data.elementType = ESdlDataType::Bool;
            data.isNullClearable = true;
            return data;
        }
        else
        {
            return SdlNativeData::fromSingleElement(
                boolPtr, ESdlDataFormat::Single, ESdlDataType::Bool, true, true);
        }
    }
 
protected:
    inline void loadFromSdl(
        Owner&                 owner,
        const SdlInputClause&  clause,
        const SdlInputContext& ctx) const override
    {
        if(clause.value == "true" || clause.value == "TRUE" || clause.value == "True")
        {
            this->setValue(owner, true);
        }
#if !PH_DEBUG
        else
        {
            this->setValue(owner, false);
        }
#else
        else if(clause.value == "false" || clause.value == "FALSE" || clause.value == "False")
        {
            this->setValue(owner, false);
        }
        else
        {
            PH_DEFAULT_DEBUG_LOG(
                "Unrecognized SDL bool literal: {}, treating it as false.", clause.value);
 
            this->setValue(owner, false);
        }
#endif
    }
 
    inline void saveToSdl(
        const Owner&            owner,
        SdlOutputClause&        out_clause,
        const SdlOutputContext& ctx) const override
    {
        if(const bool* value = this->getConstValue(owner); value)
        {
            out_clause.value = *value ? "true" : "false";
        }
        else
        {
            out_clause.isEmpty = true;
        }
    }
};
 
}// end namespace ph