indiproperty_p.h

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/*******************************************************************************
  Copyright(c) 2011 Jasem Mutlaq. All rights reserved.
               2022 Pawel Soja <[email protected]>
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Library General Public
 License version 2 as published by the Free Software Foundation.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public License
 along with this library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 Boston, MA 02110-1301, USA.
*******************************************************************************/
 
#pragma once
 
#include "indimacros.h"
#include "indibase.h"
#include "indiproperty.h"
#include "basedevice.h"
#include <memory>
#include <functional>
#include <typeinfo>
#include <cstring>
 
namespace INDI
{
 
template <typename T, typename U>
static inline std::shared_ptr<T> property_private_cast(const std::shared_ptr<U> &r)
{
    static struct Invalid : public T
    {
        Invalid() : T(16) { this->type = INDI_UNKNOWN; }
    } invalid;
    auto result = std::dynamic_pointer_cast<T>(r);
 
    // Drivers that are also clients load both libindidriver and libindiclient, and each carries its
    // own copy of this code and its RTTI. Where type_info is compared by address (e.g. macOS), the
    // dynamic_cast fails for objects created by the other library, so match the exact type by name.
    if (result == nullptr && r != nullptr)
    {
        const U &object = *r;
        if (std::strcmp(typeid(object).name(), typeid(T).name()) == 0)
            result = std::static_pointer_cast<T>(r);
    }
 
    return result != nullptr ? result : make_shared_weak(&invalid);
}
 
class BaseDevice;
class PropertyPrivate
{
    public:
        void *property = nullptr;
        BaseDevice baseDevice;
        INDI_PROPERTY_TYPE type = INDI_UNKNOWN;
        bool registered = false;
        bool dynamic = false;
 
        std::function<void()> onUpdateCallback;
 
        PropertyPrivate(void *property, INDI_PROPERTY_TYPE type);
        PropertyPrivate(PropertyViewText *property);
        PropertyPrivate(PropertyViewNumber *property);
        PropertyPrivate(PropertyViewSwitch *property);
        PropertyPrivate(PropertyViewLight *property);
        PropertyPrivate(PropertyViewBlob *property);
 
        virtual ~PropertyPrivate();
 
#ifdef INDI_PROPERTY_BACKWARD_COMPATIBILE
        Property self {make_shared_weak(this)};
#endif
};
 
}