TSdlRealArray.h

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#pragma once
 
#include "SDL/Introspect/TSdlValue.h"
#include "SDL/sdl_helpers.h"
#include "SDL/SdlResourceLocator.h"
#include "SDL/Introspect/SdlInputContext.h"
#include "DataIO/io_utils.h"
 
#include <Common/assertion.h>
#include <Common/primitive_type.h>
#include <Common/io_exceptions.h>
 
#include <type_traits>
#include <string>
#include <vector>
#include <utility>
 
namespace ph
{
 
template<typename Owner, typename Element = real, typename SdlValueType = TSdlValue<std::vector<Element>, Owner>>
class TSdlRealArray : public SdlValueType
{
    static_assert(std::is_base_of_v<TSdlAbstractValue<std::vector<Element>, Owner>, SdlValueType>,
        "SdlValueType should be a subclass of TSdlAbstractValue.");
 
public:
    template<typename ValueType>
    inline TSdlRealArray(std::string valueName, ValueType Owner::* const valuePtr) :
        SdlValueType("real-array", std::move(valueName), valuePtr)
    {}
 
    inline std::string valueAsString(const std::vector<Element>& realArray) const override
    {
        return "[" + std::to_string(realArray.size()) + " real values...]";
    }
 
    inline SdlNativeData ownedNativeData(Owner& owner) const override
    {
        std::vector<Element>* const vec = this->getValue(owner);
 
        SdlNativeData data;
        if(vec)
        {
            Element* const vecData = vec->data();
            data = SdlNativeData(
                [vecData](std::size_t elementIdx) -> SdlGetterVariant
                {
                    return SdlNativeData::permissiveElementGetter(&(vecData[elementIdx]));
                },
                [vecData](std::size_t elementIdx, SdlSetterVariant input) -> bool
                {
                    return SdlNativeData::permissiveElementSetter(input, &(vecData[elementIdx]));
                },
                AnyNonConstPtr(vec));
 
            data.numElements = vec->size();
        }
        data.elementContainer = ESdlDataFormat::Vector;
        data.elementType = sdl::float_type_of<Element>();
        return data;
    }
 
protected:
    inline void loadFromSdl(
        Owner&                 owner,
        const SdlInputClause&  clause,
        const SdlInputContext& ctx) const override
    {
        if(clause.isResourceIdentifier())
        {
            try
            {
                const std::string loadedSdlValue = io_utils::load_text(
                    SdlResourceLocator(ctx).toPath(clause.value));
                this->setValue(owner, sdl::load_number_array<Element>(loadedSdlValue));
            }
            catch(const FileIOError& e)
            {
                throw SdlLoadError("on loading real array -> " + e.whatStr());
            }
        }
        else
        {
            this->setValue(owner, sdl::load_number_array<Element>(clause.value));
        }
    }
 
    void saveToSdl(
        const Owner&            owner,
        SdlOutputClause&        out_clause,
        const SdlOutputContext& ctx) const override
    {
        // TODO: optionally as file
 
        if(const std::vector<Element>* const numberArr = this->getConstValue(owner); numberArr)
        {
            sdl::save_number_array<Element>(*numberArr, out_clause.value);
        }
    }
};
 
}// end namespace ph