TypeInfo.h

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/*--------------------------------------------------------------------------------------------
Copyright (c) 2019, NDEVR LLC
tyler.parke@ndevr.org
  __    __   ____     _____ __     __  _______
 |  \  |  | |  __ \  |  ___|\ \   / / |   __  \
 |   \ |  | | |  \ \ | |___  \ \ / /  |  |__)  |
 |  . \|  | | |__/ / | |___   \ V /   |   _   /
 |  |\    |_|_____/__|_____|___\_/____|  | \  \
 |__| \__________________________________|  \__\
 
Subject to the terms of the Enterprise+ Agreement, NDEVR hereby grants 
Licensee a limited, non-exclusive, non-transferable, royalty-free license 
(without the right to sublicense) to use the API solely for the purpose of 
Licensee's internal development efforts to develop applications for which 
the API was provided.
 
The above copyright notice and this permission notice shall be included in all 
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
 
Library: Base
File: TypeInfo
Included in API: True
Author(s): Tyler Parke
 *-----------------------------------------------------------------------------------------**/
#pragma once
#include <type_traits>
#include <NDEVR/BaseValues.h>
#include <NDEVR/ObjectInfo.h>
namespace NDEVR
{
    /**--------------------------------------------------------------------------------------------------
    \brief Stores information about a type, relevant for certain templated functions.
    To get information about a type at runtime use ObjectInfo
    **/
    class TypeInfo
    {
    public:
        constexpr TypeInfo()
            : total_size(0)
            , byte_size(0)
            , vector_size(0)
            , is_number(false)
            , is_unsigned(false)
            , is_float(false)
            , is_string(false)
            , is_buffer(false)
            , is_color(false)
            , is_boolean(false)
        {}
        uint04 total_size;
        uint02 byte_size;
        uint02 vector_size;
 
        bool is_number;
        bool is_unsigned;
        bool is_float;
        bool is_string;
        bool is_buffer;
        bool is_color;
        bool is_boolean;
 
        template<class t_type>
        bool isSame(const t_type& object)
        {
            return TypeInfo(object) == *this;
        }
        bool operator==(const TypeInfo& type) const
        {
            return total_size == type.total_size
                && byte_size == type.byte_size
                && vector_size == type.vector_size
                && is_number == type.is_number
                && is_unsigned == type.is_unsigned
                && is_float == type.is_float
                && is_string == type.is_string
                && is_buffer == type.is_buffer
                && is_color == type.is_color
                && is_boolean == type.is_boolean;
        }
        bool operator!=(const TypeInfo& type) const
        {
            return total_size != type.total_size
                || byte_size != type.byte_size
                || vector_size != type.vector_size
                || is_number != type.is_number
                || is_unsigned != type.is_unsigned
                || is_float != type.is_float
                || is_string != type.is_string
                || is_buffer != type.is_buffer
                || is_color != type.is_color
                || is_boolean != type.is_boolean;
        }
    };
    static_assert(sizeof(TypeInfo) == 16, "Bad TypeInfo Size");//used in raw ndv file
    template<class t_type, bool is_buffer = ObjectInfo<t_type>::Buffer>
    constexpr typename std::enable_if<!ObjectInfo<t_type>::Buffer, TypeInfo>::type GetTypeInfo()
    {
        TypeInfo col_type;
        col_type.byte_size   = cast<uint02>(sizeof(t_type) / (ObjectInfo<t_type>::Dimensions + (ObjectInfo<t_type>::Dimensions == 0 ? 1 : 0)));
        col_type.vector_size = ObjectInfo<t_type>::Dimensions;
        col_type.total_size  = cast<uint04>(sizeof(t_type));
        
        col_type.is_number   = ObjectInfo<t_type>::Number;
        col_type.is_unsigned = ObjectInfo<t_type>::Unsigned;
        col_type.is_float    = ObjectInfo<t_type>::Float;
        col_type.is_string   = ObjectInfo<t_type>::String;
        col_type.is_buffer   = ObjectInfo<t_type>::Buffer;
        col_type.is_color    = ObjectInfo<t_type>::Color;
        col_type.is_boolean  = ObjectInfo<t_type>::Boolean;
        return col_type;
    }
    template<class t_type>
    constexpr typename std::enable_if<ObjectInfo<t_type>::Buffer, TypeInfo>::type GetTypeInfo()
    {
        TypeInfo col_type;
        col_type.byte_size   = cast<uint02>(sizeof(decltype(t_type::Type())) / (ObjectInfo<decltype(t_type::Type())>::Dimensions + (ObjectInfo<decltype(t_type::Type())>::Dimensions == 0 ? 1 : 0)));
        col_type.vector_size = ObjectInfo<decltype(t_type::Type())>::Dimensions;
        col_type.total_size  = cast<uint04>(sizeof(decltype(t_type::Type())));
 
        col_type.is_number   = ObjectInfo<decltype(t_type::Type())>::Number;
        col_type.is_unsigned = ObjectInfo<decltype(t_type::Type())>::Unsigned;
        col_type.is_float    = ObjectInfo<decltype(t_type::Type())>::Float;
        col_type.is_string   = ObjectInfo<t_type>::String;
        col_type.is_buffer   = true;
        col_type.is_color    = ObjectInfo<decltype(t_type::Type())>::Color;
        col_type.is_boolean  = ObjectInfo<decltype(t_type::Type())>::Boolean;
        return col_type;
    }
 
}