Property.hpp

/*********************************************************************
Matt Marchant 2016 - 2021
http://trederia.blogspot.com
 
tmxlite - Zlib license.
 
This software is provided 'as-is', without any express or
implied warranty. In no event will the authors be held
liable for any damages arising from the use of this software.
 
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute
it freely, subject to the following restrictions:
 
1. The origin of this software must not be misrepresented;
you must not claim that you wrote the original software.
If you use this software in a product, an acknowledgment
in the product documentation would be appreciated but
is not required.
 
2. Altered source versions must be plainly marked as such,
and must not be misrepresented as being the original software.
 
3. This notice may not be removed or altered from any
source distribution.
*********************************************************************/
 
#pragma once
 
#include <tmxlite/Config.hpp>
#include <tmxlite/Types.hpp>
 
#include <string>
#include <cassert>
#include <vector>
 
namespace pugi
{
    class xml_node;
}
 
namespace tmx
{
    class TMXLITE_EXPORT_API Property final
    {
    public:
            
        enum class Type
        {
            Boolean,
            Float,
            Int,
            String,
            Colour,
            File,
            Object,
            Class,
            Undef
        };
            
        Property();
 
        static Property fromBoolean(bool value);
        static Property fromFloat(float value);
        static Property fromInt(int value);
        static Property fromString(const std::string& value);
        static Property fromColour(const Colour& value);
        static Property fromFile(const std::string& value);
        static Property fromObject(int value);

        void parse(const pugi::xml_node&, bool isObjectTypes = false);

        Type getType() const { return m_type; }

        const std::string& getName() const { return m_name; }

        bool getBoolValue() const { assert(m_type == Type::Boolean); return m_boolValue; }

        float getFloatValue() const { assert(m_type == Type::Float); return m_floatValue; }

        int getIntValue() const { assert(m_type == Type::Int || m_type == Type::Object); return m_intValue; }

        const std::string& getStringValue() const { assert(m_type == Type::String); return m_stringValue; }

        const Colour& getColourValue() const { assert(m_type == Type::Colour); return m_colourValue; }

        const std::string& getFileValue() const { assert(m_type == Type::File); return m_stringValue; }

        const std::vector<Property>& getClassValue() const {assert(m_type == Type::Class); return m_classValue; }

        const std::string getPropertyType() const {assert(m_type == Type::Class); return m_propertyType; }
        
        int getObjectValue() const { assert(m_type == Type::Object); return m_intValue; }
 
 
    private:
        union
        {
            bool m_boolValue;
            float m_floatValue;
            int m_intValue;
        };
        std::string m_stringValue;
        std::string m_name;
        std::string m_propertyType;
        
        Colour m_colourValue;
        std::vector<Property> m_classValue;
 
        Type m_type;
    };
}